JP5738103B2 - Electric vehicle and power management device - Google Patents

Description

  The present invention relates to an electric vehicle having a large-capacity electric power storage means and a power management device thereof, and more particularly to a technique for taxing charge / discharge power of an electric vehicle.

  In recent years, in order to reduce the environmental load, when peak power is likely to exceed the amount of power supplied from the power plant, the power previously stored in a battery such as an EV is discharged to the power system to stabilize the power. Development of smart grid technology and demonstration experiments are being carried out. Furthermore, in addition to this reduction in peak power, power generation systems using natural energy such as sunlight that can generate electricity without emitting carbon dioxide have become widespread as consumers become more aware of the environment, creating a decentralized energy community. The surplus power generated by the solar panels is being sold to the power system in general.

  In addition, as a part of future global warming countermeasures, instead of ordinary gasoline vehicles, when environmentally friendly electric vehicles (hereinafter referred to as EV) become widespread, it is necessary to give new taxes instead of gasoline taxes. Come. In the following, EV includes electric motorcycles and the like.

  By the way, in the prior art, a power consumption when a new tax is given and a management technique for managing the tax are disclosed (for example, see Patent Document 1 below). Specifically, for example, when charging an EV in a specific area such as a home, it is necessary to separately manage the amount of charge to the EV and the amount of electric power used by home appliances in the home. On the other hand, when charging outside a specific area, area information is managed in addition to the amount of charge. For charging to the EV, authentication is performed with a contractor ID, a household ID, and the like. Regarding the calculation of the electric power charge, for the EV, the electric power usage amount and the tax are calculated based on the electric power usage amount and the vehicle type information. And it collects from a user as an electric power charge combining the electric power usage-amount of household appliances, the charge amount to EV, and the tax at the time of EV charge.

JP 2009-129384 A

  In the technique described in Patent Document 1 described above, a charging method for collecting a tax instead of a gasoline tax as a power charge when charging to an EV is disclosed. However, electric power discharged from an EV battery is considered. It has not been. Therefore, when discharging the electric power once charged in the EV, it can be understood that the electric power used in the EV itself among the discharged electric power is charged as a tax like the gasoline tax. For example, even if the discharged electric power from the EV is used for home appliances in the home, etc., it is considered that the electric power is used for the EV and a tax similar to the gasoline tax is imposed. It is not appropriate.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and its purpose is to tax / exclude tax depending on the intended use when discharging the electric power charged in the EV. It is an object of the present invention to provide an electric vehicle that can reasonably collect a power usage fee and a tax, and a power management device for the electric vehicle.

Electric vehicles of the present invention, the measurement and has a storage means for charging and discharging a large capacity for the outside, the charge amount measuring means for measuring the amount of charge to said power storage means, the discharge amount from said storage means Discharge amount measuring means, charge / discharge control means for controlling charge / discharge to the power storage means, and a discharge amount and a charge amount for the power storage means measured by the charge amount measurement means and the discharge amount measurement means, respectively. Charging / discharging amount storing means for storing, connecting means for connecting to a power supply system installed outside the vehicle, communication means for communicating with the power management means installed outside the vehicle, and charging of the power storage means from outside the vehicle Or authentication means for authenticating by communicating with the power management means via the communication means whether or not discharging from the power storage means to the outside of the vehicle is permitted , and taxation information at the time of charging the power storage means use And a notifying means for informing the said charge and discharge control means, the connection means result of the authentication by the authentication means when connected to said power management means via, charging of said power management means the storage means When the tax on the discharge amount can be managed, the charge management unit is notified of the charge amount and the discharge amount for the power storage unit respectively measured by the charge amount measurement unit and the discharge amount measurement unit via the communication unit. On the other hand, when the power management means cannot manage taxation on the charge / discharge amount of the power storage means, the charge amount and discharge amount for the power storage means respectively measured by the charge amount measurement means and the discharge amount measurement means are performs control to store the charge and discharge amount storage means, the charge and discharge control means, the charging by the charge amount measuring means at the start of charging to the power storage means The power capable of managing the tax on the charge / discharge amount of the power storage means via the communication means while giving the measurement start instruction while charging the charge amount measured by the charge amount measurement means in response to completion of charging of the power storage means Control is performed to notify the management means, and the charge / discharge control means sets a taxation information flag indicating that taxation processing is not completed at the start of charging of the power storage means, while charging to the power storage means is completed. When the response packet indicating the completion of taxation processing is received from the power management means after completion of notification of the amount of charge to the power management means, control is performed to clear the taxation information flag, and the charge / discharge control is further performed. The means performs control to display the state of the taxation information flag on the notification means upon completion of charging to the power storage means and completion of notification of the charge amount to the power management means. It is characterized by being.

The power management equipment of the present invention is discharged supplied amount of power supplied from the system power supply to the electric vehicle equipped with the power storage means can be charged and discharged a large capacity, and from the electric vehicle to the power grid A means for connecting the grid power supply and the electric vehicle, a power consumption notification means for notifying the power company of the power consumption in the customer's house, and the grid Power supply amount measuring means for measuring the amount of power supplied from the power source to the electric vehicle, and communication means for communicating with the electric vehicle;
Authentication means for authenticating through the communication means whether charging / discharging of the electric storage means of the electric vehicle is permitted by a user, and electric power charged / discharged between the system power supply and the electric vehicle A power management means for managing the amount, and a storage means for storing information on the amount of power used for taxation management, wherein the power management means connects the in-home power supply and the electric vehicle by the connection means. If the user is permitted to charge / discharge the power storage means of the electric vehicle as a result of authentication by the authentication means at the time, the charging request to the electric vehicle or the discharge from the electric vehicle Charging or discharging the power storage means from the system power supply as required, and the amount of power supplied to the electric vehicle measured by the power supply amount measuring means and Based on the charge-discharge electric power information supplied from the serial electric vehicles, power usage from the system power supply, the charge amount for the electric vehicles, and the amount of discharge from the electric vehicle by dividing each control to be stored in the storage means In addition, the power amount management means issues a request to the electric vehicle for notification of uncharged charge amount information and undisclosed tax discharge amount information, and is notified from the electric vehicle in response to the request. It is characterized in that it controls to store these information in the storage means .

This onset Ming electric vehicle, by utilizing the power storage means can be charged and discharged a large capacity for the outside of the vehicle, to discharge peak power, or the power rate high hours power stored in the storage means In addition, it is possible to reduce the use of power at peak power, or to effectively use power charged with inexpensive late-night power. In that case, if the power charged when the power storage means is charged is used for discharging to electrical equipment in the house other than for driving the electric vehicle or to the system power supply, the amount of discharge is reliably managed. Based on the management result, it is possible to reliably adjust the tax paid by the user excessively. Further, for example, the charged power that has already been taxed can be distinguished by the taxation information flag, so that the user does not pay too much tax. Further, even if an error is mixed in the data at the communication stage and the power amount management means cannot receive the charge amount information, the tax information flag is not cleared until a response packet indicating the completion of taxation is received. Therefore, it is possible to reliably charge a tax on the amount of charging power. Furthermore, since the state of the taxation information flag is displayed when the charging to the power storage means is completed or the notification of the charge amount to the power amount management means is completed, the user looks at the display status of the taxation information flag and the unpaid tax is It is possible to confirm how much is present and the convenience is enhanced.

The present onset Ming power management device, charging of the electric vehicle from the user does not power amount discharged from the storage means in electric vehicle, or the electric vehicle is registered to use the Appliances home power The amount (the amount of power that does not pay tax) can be read from the electric vehicle. For this reason, while being able to manage reliably with respect to the tax concerning charging / discharging to an electric vehicle, for example, the amount of discharge to the user who the electric power company discharged from the electric vehicle Therefore, even when discounting the electricity rate according to the discharge amount, etc., the charge amount, the discharge amount, and the power usage amount are managed separately, so the power rate discount should be surely performed according to the discharge amount This eliminates the need for users to pay unnecessary taxes. Furthermore, the electric energy management means can collect information on taxation of a user who has an electric vehicle, and can reliably perform tax management by charging or discharging.

1 is a configuration diagram schematically showing a system configuration of an electric vehicle and a power management system according to Embodiment 1 of the present invention. FIG. 2 is a block diagram schematically showing a configuration of a charge / discharge control circuit in the electric vehicle shown in FIG. 1. It is a block diagram which shows schematically the structure of the smart meter shown by FIG. FIG. 2 is a block diagram schematically showing a configuration of a power billing server shown in FIG. 1. 2 is an overall control flow when the electric vehicle shown in FIG. 1 is connected to a power supply I / F. 2 is an overall control flow when an electric vehicle is connected to the smart meter shown in FIG. 1. 2 is an overall control flow when the smart meter shown in FIG. 1 is turned on and activated. 2 is an overall control flow of the power billing server shown in FIG. 1. 2 is a control flow in an electric vehicle when the electric vehicle shown in FIG. 1 is registered in a smart meter and a power billing server. It is a control flow of the smart meter when registering the electric vehicle shown in FIG. 1 in the smart meter and the power billing server. FIG. 3 is a control flow of the power billing server when registering the electric vehicle shown in FIG. 1 in the smart meter and the power billing server. FIG. It is explanatory drawing which shows the operation | movement sequence between the electric vehicle at the time of registration of an electric vehicle, a smart meter, and an electric power billing server in this Embodiment 1. FIG. It is a control flow which shows the authentication of an electric vehicle at the time of connecting the electric vehicle shown by FIG. 1 to in-home power supply I / F, and a connection process. 2 is a control flow showing authentication and connection processing by a smart meter when the electric vehicle shown in FIG. 1 is connected to a home power supply I / F. It is explanatory drawing which shows the operation | movement sequence of the mutual authentication of an electric vehicle and a smart meter at the time of connecting the electric vehicle in this Embodiment 1 to in-home power supply I / F, and a smart meter. FIG. 3 is a control flow showing processing of the electric vehicle when the electric vehicle shown in FIG. 1 is connected to a power source I / F to charge the electric vehicle. It is a control flow which shows the process of the smart meter at the time of connecting the electric vehicle shown by FIG. 1 to power supply I / F, and charging an electric vehicle. FIG. 3 is a control flow showing processing of the electric vehicle when the electric vehicle shown in FIG. 1 is connected to the in-house power supply I / F and discharged from the electric vehicle. It is a control flow which shows the process of a smart meter at the time of connecting the electric vehicle shown by FIG. 1 to power supply I / F, and discharging from an electric vehicle. A control flow showing the processing of the smart meter when calculating the amount of power used to charge the user based on the amount of power used at home, the amount of power charged to the electric vehicle, and the amount of electric power discharged from the electric vehicle shown in FIG. It is. The control which shows the process of the electric power billing server at the time of calculating the electric power usage amount billed to the user based on the electric power usage amount in the house shown in FIG. 1, the electric energy charged to the electric vehicle, and the electric energy discharged from the electric vehicle It is a flow. It is a control flow which shows the process at the time of deleting the registration information regarding the electric vehicle and smart meter which are registered in the electric vehicle and smart meter which are shown in FIG.

Embodiment 1 FIG.
FIG. 1 is a system configuration diagram centering on an electric vehicle and a power management apparatus according to Embodiment 1 of the present invention.
In the figure, 1 is a battery mounted on the EV 10, 2 is a charge amount measuring circuit that measures the amount of charge to the battery 1, and 3 is a discharge power amount that is supplied from the battery 1 to the home through the automobile power supply I / F 8. Discharge amount measuring circuit, 4 is a charge amount to the battery 1, a charge / discharge control circuit for controlling the discharge amount from the battery 1, 5 is a home smart meter 21 connected via the communication circuit 6, or not shown An authentication circuit that performs device authentication between the charging station and the EV, 6 is a communication circuit that communicates with the smart meter 21 in the house or a charging station (not shown), 7 is an amount of charging power charged in the battery 1, and the battery 1 A taxation management circuit for managing the amount of electric power discharged from the home, 8 is connected to the home power supply I / F 23 or a power supply interface of a charging stand (not shown). Automotive power I / F circuit, 9 is an in-vehicle equipment such as an air conditioner.

  The charge / discharge control system centered on the battery 1 of the EV 10 includes a battery 1, a charge amount measurement circuit 2, a discharge amount measurement circuit 3, a charge / discharge control circuit 4, an authentication circuit 5, a communication circuit 6, a taxation management circuit 7, an automobile power source. An I / F circuit 8 and an in-vehicle device 9 are included.

  Reference numeral 21 denotes a smart meter disposed in the home 20, 22 a monitor for displaying device information output from the smart meter 21, and 23 a home power supply I / F circuit connected to the EV 10. 31 is a system power supply supplied to the home 20, 32 is the Internet, 33 is the power consumption in the home 20 notified from the smart meter 21, the amount of charging power to the EV 10, the amount of discharging power from the EV 10, and the unpaid portion of the EV 10 This is a power billing server that calculates a power usage fee and tax charged to a user based on the amount of charged power.

  FIG. 2 is a system configuration diagram centering on the charge / discharge control circuit 4 in the EV 10 according to the first embodiment of the present invention. In the figure, the same reference numerals as those in FIG.

  In FIG. 2, 41 is a CPU that controls the charge / discharge control circuit 4, and 42 is a ROM that contains a program executed by the CPU 41. In the first embodiment, the ROM 42 is constituted by a flash ROM, and the EV 10 itself IP address, MAC address, home smart meter 21 information, key information for encryption used for device authentication, etc., tax-free The amount of charging power, the amount of unreported discharge power, etc. are stored.

  43 is a RAM used as a work area when the CPU 41 executes a program, 44 is a CPU bus, and 45 is a charge power amount to be taxed based on the charge power amount output from the charge amount measurement circuit 2. A charge tax calculation circuit 46 is a discharge tax calculation circuit that calculates a discharge power amount that is not adjusted for tax adjustment based on the discharge power amount output from the discharge amount measurement circuit 3.

  47, DC voltage supplied from the vehicle power supply I / F 8 is changed and supplied to the battery 1, or DC voltage discharged from the battery 1 is changed and supplied to the smart meter 21 in the house. A DC-DC converter control circuit for controlling the DC converter 48, 48 is a DC-DC converter.

  Then, the storage means in the claims is in the battery 1, the charge amount measurement means is in the charge amount measurement circuit 2, the discharge amount measurement means is in the discharge amount measurement circuit 3, and the charge / discharge control means and the charge control means are charged. In the discharge control circuit 4, the charge / discharge amount storage means and the charge amount storage means correspond to the ROM 42, the connection means corresponds to the automobile power supply I / F 8, the authentication means corresponds to the authentication circuit 5, and the communication means corresponds to the communication circuit 6. Yes.

  FIG. 3 is a system configuration diagram focusing on EV charge / discharge control of the smart meter 21 according to Embodiment 1 of the present invention. In the figure, the same reference numerals as those in FIG.

  In FIG. 3, 61 is a CPU that controls the smart meter 21, and 62 is a ROM that contains a program executed by the CPU 61. In the first embodiment, the ROM 62 is constituted by a flash ROM, and the IP address and MAC address of the smart meter 21, EV10 information managed by the user, encryption key information used for device authentication, etc. The amount of power supplied and consumed from the system power supply 31, the amount of uncharged charging power, the amount of discharged power from the battery 1 in the EV 10, and the like are stored.

  63 is a RAM used as a work area when the CPU 61 executes a program, 64 is a CPU bus, 65 is a device authentication with the EV 10 connected via the inter-EV communication circuit 70, or an Internet communication circuit 71. An authentication circuit for performing device authentication with the power billing server 33 connected via the power supply, 66 is an amount of power supplied from the system power supply 31 used in the home 20, an amount of power charged to the EV 10, and an amount of power discharged from the EV 10 Is a billing / taxing management circuit for managing

  67 manages the information of the battery 1 in the EV 10 received through the inter-EV communication circuit 70 (specifically, the amount of charge of the battery 1, information on the control method at the time of charging the battery 1, etc.). 4 is an EV battery charge / discharge control management circuit that outputs a charge or discharge instruction and a charge or discharge control instruction to the AC-DC converter control circuit 68 based on a charge request from the CPU 61, a charge from the CPU 61, or a discharge request.

  68 is an AC-DC converter control circuit for controlling the AC / DC converter 69 based on the charge or discharge instruction output from the EV battery charge / discharge control management circuit 67, and 69 is an AC power supplied from the system (hereinafter referred to as AC power). Or an AC-DC converter that converts DC power supplied from the battery 1 in the EV 10 into AC power, or 70, which converts DC power into DC power (hereinafter referred to as DC power or simply DC). An inter-EV communication circuit that performs communication between the EV 10 and the smart meter 21, and 71 is an Internet communication circuit that performs communication between the power billing server 33 connected to the Internet 32 and the smart meter 21.

  Then, the power management device and the power management means in the claims are charged to the smart meter 21, the connection means is the in-home power supply I / F, the used power amount notifying means is the Internet communication circuit 71, and the supplied power amount measuring means is charged. Notification to taxation management circuit 66, communication means (input means) to inter-EV communication circuit 70, authentication means to authentication circuit 65, electric energy management means to EV battery charge / discharge control management circuit 67, storage means to ROM 62 Means correspond to the monitor 22 and the monitor control circuit 72, respectively.

  FIG. 4 is a system configuration diagram focusing on power billing control of the power billing server 33 according to Embodiment 1 of the present invention. In the figure, the same reference numerals as those in FIG.

  In FIG. 4, 81 is a CPU that controls the power billing server 33, and 82 is a ROM that contains a program executed by the CPU 81. In the first embodiment, the ROM 82 is composed of a flash ROM or a hard disk drive, and the IP address of the power billing server 33 itself, the MAC address, and the IP of the smart meter 21 disposed in each home connected to the Internet 32. Address, MAC address, key information for encryption used for device authentication, the amount of power supplied from the system power supply 31 used in each home notified from the smart meter 21, and the EV 10 managed by the smart meter 21 charged The charged electric energy, the discharged electric energy discharged from the EV 10, and the like are stored.

83 is used as a work area when the CPU 61 executes the program, and the amount of power supplied from the system power supply 31 used in each home notified from each smart meter 21 and the charge charged to the EV 10 managed by the smart meter 21 This RAM temporarily stores the amount of power, the amount of discharged power discharged from the EV 10, and the like.
Also, 84 is a CPU bus, 85 is an authentication circuit for authenticating the smart meter 21 connected to the Internet 32, 86 is an Internet communication circuit, 87 is an EV registration database for registering EV information requested by the user, and 88 is A customer registration database for registering information on the smart meter 21 managed by the power billing server 33, 89 a power usage management circuit for managing the power usage of each consumer notified from the smart meter 21, and 90 an EV registration database. 2 is a tax management circuit that calculates a tax amount for a consumer based on the amount of power charged in the EV 10 and the amount of discharge from the EV 10.

  In the first embodiment, for easy understanding, the charge / discharge control circuit 4, the authentication circuit 5, the communication circuit 6, the taxation management circuit 7, the charge taxation calculation circuit 45, the discharge taxation calculation circuit 46, the DC− DC converter control circuit 47, authentication circuit 65, charging / taxing management circuit 66, EV battery charge / discharge control management circuit 67, AC-DC converter control circuit 68, authentication circuit 85, EV registration database 87, customer registration database 88, power 1 to 4 have been described on the assumption that the usage management circuit 89, the tax management circuit 90, and the like are configured by H / W, but the present invention is not limited to this, and all of the above circuits or some of the circuits are included. Needless to say, the same effect can be obtained even if the S / W is used. Needless to say, the function of each circuit may be divided into S / W and H / W to realize the same function.

Next, specific operations of the electric vehicle and the power management apparatus according to the first embodiment will be described with reference to FIGS.
First, an authentication / registration operation of the EV 10 and the power management apparatus will be described with reference to FIGS. FIG. 5 shows the overall control flow of the charge / discharge control circuit 4 of the EV 10 when the EV power source I / F 8 of the EV 10 is connected to the power source. FIG. FIG. 7 is a control flow when the smart meter 21 is turned on and started up. 8 is an overall control flow of the power billing server 33, and FIG. 9 is a control flow when the EV 10 registers the EV 10 in the smart meter 21 and the power billing server 33. 10 is a control flow of the smart meter 21 when registering the EV 10 in the smart meter 21 and the power billing server 33. FIG. 11 is a control flow of the power billing server 33 when registering the EV 10 in the smart meter 21 and the power billing server 33. It is. FIG. 12 is an explanatory diagram showing an operation sequence between the EV 10 when registering the EV 10 in the smart meter 21 and the power billing server 33.

  First, the overall operation of the EV 10 when the automobile power I / F 8 of the EV 10 is connected to the power I / F will be described with reference to FIG.

The car power supply I / F 8 in the EV 10 is not only connected to the home power supply I / F 23 at home, but also other charging I / Fs of charging stations (not shown), for example, at home, F, or a power supply I / F of a hotel at a travel destination. Therefore, when the vehicle power supply I / F 8 is connected to any power supply I / F as described above, the charge / discharge control circuit 4 in the EV 10 confirms the power supply connection of the vehicle power supply I / F 8 (S1). Next, when the automobile power supply I / F 8 is connected to any power supply I / F, the charge / discharge control circuit 4 checks whether it is connected to the power supply I / F of the charging stand (S2). This is confirmed by exchanging information with the counterpart device through the communication circuit 6 of the EV 10.
As a result of the confirmation, when it is determined that the connection is made with the power supply I / F of the charging stand, charging of the battery 1 in the EV 10 is started (S3). At that time, the charge taxation calculation circuit 45 in the charge / discharge control circuit 4 acquires the measurement result of the charge amount to the battery 1 from the charge amount measurement circuit 2, and determines the charge power amount to the battery 1 and the charge amount to be taxed. calculate.

  In the first embodiment, only the amount of power substantially charged to the battery 1 is subject to taxation, and the power using the vehicle-mounted device 9 mounted on the EV 10 at the time of charging is not subject to taxation. To do. This is because charging may be performed while cooling with an in-vehicle air conditioner in order to suppress an increase in the temperature of the battery 1 when charging the EV 10. The taxable scope is not limited to the above example, and it goes without saying that all electric power used during charging may be taxable.

  If the connection destination is not a charging stand in the previous S2, it is confirmed whether the home smart meter 21 is registered in the EV 10 (S4). In this case, in the first embodiment, the smart meter 21 at home is defined as any smart device in which the user has completed the registration procedure for his / her EV 10 and allowed to collect a taxable fee for the electric power charged to his / her EV 10. Point to meter. Therefore, for example, in addition to the smart meter 21 at home that serves as a tax collection port installed in a house that is currently resident and has a tax withdrawal account, the charging station is excluded, for example, Even when charging at a place other than the original home, such as a friend or a travel destination hotel, the smart meter includes a user who completes the registration procedure of his / her EV 10 and allows the collection of the taxed fee for the charging power to the EV 10. Therefore, all the electric power charged to the EV 10 from these smart meters 21 is a taxable charge collection target, and the taxable charge is collected together with the electric power charge used.

  As will be described later in detail, the discharge from the EV 10 can be performed only when the EV 10 is connected to the home smart meter 21 registered as a tax collection port, including adjustment of taxation charges. However, even if it is other than the discharge from the smart meter 21 at home registered as a tax collection port, the discharge amount from the EV 10 is the charge / discharge control circuit in the EV 10 even if the discharge is approved by the user. Since it is managed within 4, the taxable fee can be collected.

  If the home smart meter 21 is not registered in the EV 10 in S4, the home smart meter 21 is registered in S5. The registration operation of the home smart meter 21 will be described later (see FIG. 9). When the home smart meter 21 is registered in S4 or when the registration process of the home smart meter 21 is completed in S5, the home smart registered as a tax collection port is connected to the power source. It is confirmed whether or not the meter 21 (S6). If the smart meter 21 is not the tax collection port in S6, the battery 1 is charged at a place other than the tax collection fee collection port and the charging station (S7), and after the charging is completed, the EV 10 ends the process. The charging operation for the battery 1 other than charging at the charging stand will be described later (see FIG. 16).

  When the connection destination of the power source is the home power supply I / F 23 of the smart meter 21 at the tax collection port in S6, the charge / discharge control circuit 4 in the EV 10 is a communication circuit in order to perform authentication with the smart meter 21. 6, a registration request is transmitted to the smart meter 21 (S8). If the registration request response transmitted from the smart meter 21 to the EV 10 is received accordingly (S9), the charge / discharge control circuit 4 in the EV 10 performs the registration process of the smart meter 21 at home again. (S16) (see FIG. 9).

  Thus, the registration process of the smart meter 21 at home is performed again for the following reason. In the first embodiment, the collection of a taxable charge at the time of charging to the EV 10 is performed together with the power charge used at a place other than the charging station at the home where the smart meter 21 registered as a tax collection port is located. Therefore, if the EV 10 is not connected to the home smart meter 21 registered as a tax collection port for a long period of time, for example, even if the user initially registers the home smart meter 21 in the EV 10, the tax collection is thereafter performed. If the power is not connected to the home smart meter 21 registered as a mouth, for example, when charging is performed using the power I / F of a nearby home, the user charges the EV 10 without paying taxes. You can continue to run and you will not be able to collect the tax on the EV10 charging power. Therefore, in order to prevent such a problem from occurring, if the user does not connect to the home smart meter 21 registered as a tax collection port for a predetermined period, a home smart meter in the EV 10 is used. 21 information and EV10 information in the smart meter 21 are deleted. As a result, although the details will be described later, if the user does not connect the EV 10 to the smart meter 21 for a predetermined time, other than charging at the charging station, the home smart registered again as a tax collection port. If the information of the smart meter 21 is not registered by connecting to the meter 21, the battery 1 cannot be charged (see FIG. 22).

  On the other hand, if the EV 10 registration request response is not received from the smart meter 21 in S9, authentication / connection processing with the smart meter 21 is performed (S10). Details of the authentication / connection process with the smart meter 21 will be described later (see FIG. 13). When the authentication / connection process is completed in S10, the CPU 41 in the EV 10 checks the remaining amount of the battery 1 and determines whether or not to charge the battery 1 (S11). Specifically, the CPU 41 acquires the amount of charge in the battery 1 from the charge taxation calculation circuit 45 when charging the battery 1. At that time, the amount of discharge from the discharge tax calculation circuit 46 is acquired, and the amount of stored electric power in the battery 1 is calculated based on the acquisition result. Then, the CPU 41 determines whether or not to charge the battery 1 from the stored power amount.

  In the first embodiment, although not shown, when the stored power amount in the battery 1 is less than a predetermined power (for example, when the EV 10 is used urgently, the stored power amount of the battery 1 is (If it is less than 50%), the battery will be charged immediately. However, if it is more than the above power, there is basically surplus power in the generated power using natural energy such as solar cells and wind power generation. Or when the electricity bill is cheap, such as late at night. In particular, when there is a charging request from the user, the CPU 41 starts charging based on the request. When the CPU 41 issues a charging instruction in S11 as described above, the battery 1 is charged at home (S12). The charging process will be described later (see FIG. 16).

  If it is determined in the previous S11 that charging is not necessary, it is then checked whether there is a discharge request from the smart meter 21 at home registered as a tax collection port (S13). If there is a discharge request, the power stored in the battery 1 in the EV 10 is discharged (S14). The discharge process will be described later (see FIG. 18). If there is no discharge request from the smart meter 21 at home in S13, it is checked whether the vehicle power I / F 8 and the home power I / F 23 are connected (S15). Repeat the process. On the other hand, if it is not in the connected state, the process is terminated.

Next, the operation of the smart meter 21 when the automobile power supply I / F 8 is connected to the home power supply I / F 23 will be described with reference to FIG.
When the automobile power supply I / F 8 is connected to the residential power supply I / F 23, the CPU 61 in the smart meter 21 confirms whether or not the authentication request output in S8 of FIG. 5 has been received from the connected EV 10 (S41). ). If not received, it is confirmed whether a registration request from the EV 10 has been received (S42). The registration request from the EV 10 is sent to the smart meter 21 in the process of S5 or S16 in FIG. If a registration request from the EV 10 has been received, EV 10 registration processing is performed (S43). A detailed description of the EV 10 registration process will be given later (see FIG. 10).

On the other hand, if there is no EV10 registration request, the process returns to S41 and waits until an EV10 authentication request or a registration request from the EV10 is received.
When receiving the authentication request from the EV 10 in the previous S41, the CPU 41 accesses the EV management database in the charging / taxation management circuit 66 to check whether the EV 10 has already been registered (S44). If the EV 10 is not registered, a registration processing request for the EV 10 is transmitted to the EV 10 via the inter-EV communication circuit 70 (S45). When the EV 10 receives a registration processing request from the smart meter 21, the EV 10 sends an authentication / registration request to the smart meter 21 and starts the registration processing in S5 and S16 of FIG. Details of the registration process of the EV 10 will be described later (see FIG. 9).

On the other hand, if the EV 10 has already been registered in the smart meter 21 in S44 of FIG. 6, authentication / connection processing with the EV 10 is performed (S46). Specifically, the EV 10 connected to the home power supply I / F 23 is authenticated, the tax is not paid when charging the battery 1 managed in the EV 10 after the authentication, and the tax is not taxed by the discharged power at the time of discharging. Unadjusted taxation information to be obtained and information on the amount of stored electricity charged in the battery 1 are acquired.
When the above information is collected from the EV 10, the CPU 61 stores information related to taxation in the memory in the charging / taxing management circuit 66, and stores the amount of power stored in the battery 1 in the memory in the EV battery charge / discharge control management circuit 67. The authentication / connection process of the smart meter 21 with the EV 10 will be described later (see FIG. 14).

When the authentication / connection process with the EV 10 in S46 is completed, the CPU 61 confirms whether or not a charge request from the EV 10 has been received (S47). When the charging request from the EV 10 has been received, the charging process to the EV 10 is performed according to the processing flow described later (S48). Details of the process for charging the EV 10 will be described later (see FIG. 17).
If the charge request from the EV 10 has not been received in S47, the CPU 41 determines whether to output a discharge request to the battery 1 (S49). If it is determined in S49 that a discharge request is output to the battery 1, the CPU 41 performs a discharge process from the EV 10 (S50). Details of the discharge process to the EV 10 by the smart meter 21 will be described later (see FIG. 19).

  If it is determined in the previous S49 that the discharge from the EV 10 is not necessary, the CPU 41 confirms the connection with the EV 10 (S51). As a result of the connection confirmation, if it is determined that the connection is established, the process returns to S47 and the above process is repeated (S52). On the other hand, when it is determined in S52 that it is not connected to the EV 10, the connection process with the EV 10 is terminated.

Next, processing when the smart meter 21 is turned on will be described with reference to the control flow of FIG.
When the smart meter 21 is activated, the CPU 41 transmits an authentication request to the power billing server 33 (S81). Then, an authentication process is performed with the power billing server 33 (S82). When this authentication process is completed, the smart meter 21 measures the amount of power used in the home, the amount of power generated by the PV panel, the amount of regenerative power to the power system, and the like. When the transmission request of the user power consumption / EV taxable power amount is received from the power billing server 33 through the Internet communication circuit 71 during the above processing (S83), the CPU 41 in the billing / taxing management circuit 66 The amount of power used by the user, the amount of regenerative power regenerated by the user to the grid, the amount of uncharged charge that the user has charged to the EV 10 and the tax has not yet been paid, and the unadjusted amount that should be tax free due to the discharge from the battery 1 Information such as the amount of discharged power and the number of times the power company has cooperated with the energy saving request is read, and power calculation processing is performed (S84).

  If the transmission request for the user power consumption / EV taxed power amount has not been received in S83, it is confirmed whether an energy saving request has been received from the power billing server 33 (S85). If an energy saving request has been received, an instruction to save energy is given to a household electrical appliance (not shown) in the house (S86). Specifically, the air conditioner such as an air conditioner changes the set temperature to save energy, and the liquid crystal TV or the like reduces the brightness of the backlight to save energy.

  If the amount of power supplied from the power plant is insufficient even if the power consumption is reduced for the home appliances in the house 20 due to the energy saving request, the power billing server 33 requests the discharge from the battery in each consumer house. . When the smart meter 21 receives a discharge request from the power billing server 33 (S87), the smart meter 21 performs a discharge process from the battery 1 in the EV 10 (S88). The details of the discharge process by the smart meter 21 will be described later (see FIG. 19).

  When there is no energy saving request (S85) from the power billing server 33 or discharge request from the storage battery (S87), it is confirmed whether there is a registration request issued from the EV 10 along with the registration processing of S5 and S16 in FIG. (S89). If there is a registration request from EV10, EV10 registration processing is executed (S90). Details of the registration process of the EV 10 will be described later (see FIG. 10). If there is no registration request from the EV 10 in S89, the process returns to S83 and repeats the above processing.

Next, the overall processing of the power billing server 33 will be described using the control flow of FIG.
The CPU 81 in the power billing server 33 confirms whether there is an authentication request from the smart meter 21 (S121). If there is an authentication request from the smart meter 21, authentication is performed according to a flow (FIG. 11) described later (S122). On the other hand, if there is no authentication request, the CPU 81 checks whether there is an EV 10 registration request from the smart meter 21. If there is a registration request, the EV 10 is registered based on a control flow (FIG. 11) described later (S124). If there is no EV10 registration request in S122, it is confirmed whether the amount of power supplied from the power plant is sufficient (S125). And when there is not enough electric power supply, an energy-saving request | requirement is created and an energy-saving request | requirement is sent with respect to the smart meter 21 of each consumer (S126). After sending the above energy saving request, it is confirmed again whether the power supply is sufficient (S127). If the power supply is not yet sufficient, a request for discharging from the battery 1 is formulated and each customer is requested. (S128). Then, it is confirmed again whether the power supply amount is sufficient (S129). If the power supply is not enough, a power supply amount addition request is created and transmitted to the power plant (S130). If the supplied power is sufficient in S127 and S129, and after transmitting the power supply amount addition request to the power plant in S130, the CPU 81 returns to S121 and repeats the same processing.

  When the power supply amount is sufficient in the previous S125, the CPU 81 checks the current time and determines whether it is the power charge calculation timing (S131). In the first embodiment, it is assumed that information collection from each smart meter 21 for calculating the electricity rate is performed once a day. If it is the time to calculate the power charge in S131, a power charge calculation process is performed (S132). Details of the power charge calculation processing by the power billing server 33 will be described later (see FIG. 21). If the power charge calculation process is completed in S132 or if it is not the power charge calculation process timing in S131, the CPU 81 returns to S121 and repeats the same process.

  Here, for simplicity of explanation, the power billing server 33 is assumed to process each smart meter 21 one by one, but the present invention is not limited to this. Thus, for example, when an EV 10 registration request is received at the same time, it goes without saying that the EV 10 registration process may be simultaneously performed for a plurality of requested smart meters 21 in one step.

Next, the operation of registration processing of the EV 10, the smart meter 21 at home, and the power billing server 33 will be described with reference to FIGS.
When registration of the smart meter 21 at home by the EV 10 is started in S5 of FIG. 5, the CPU 41 in the EV 10 outputs a registration request to the smart meter 21 as shown in FIG. 9 (S161). Specifically, as shown in FIG. 12, when the automobile power supply I / F 8 is connected to the in-home power supply I / F 23, the CPU 41 in the EV 10 sends a probe request (connection request) via the communication circuit 6. Output to the smart meter 21. When the CPU 61 in the smart meter 21 receives a probe request from the EV 10 via the inter-EV communication circuit 70, the CPU 61 transmits a probe response to the EV 10 via the inter-EV communication circuit 70 and permits the connection. When the EV 10 receives the probe response, the CPU 41 transmits a registration request to the smart meter 21 at home (S161).

  On the other hand, on the smart meter 21 side, as shown in FIG. 10, the CPU 61 that has transmitted the probe response waits for reception of a registration request output from the EV 10 in S161 of FIG. 9 (S201). When the registration request from the EV 10 is received, the CPU 61 in the smart meter 21 confirms a registration database of EV information (not shown) managed by the charging / taxation management circuit 66 based on the sent EV 10 information ( 12), it is confirmed whether the EV 10 that transmitted the registration request has already been registered (S202). If already registered, a registration response is transmitted to the EV 10 (S221).

  If the EV10 information is not registered in the registration database in the previous S202, the CPU 61 displays the fact on the monitor 22 via the monitor control circuit 72, and the key number information for identifying the EV10 to the user. To enter. In the first embodiment, when the EV 10 is registered, vehicle-specific information for authenticating the EV 10 such as a key number of the EV 10 is directly input from the user (S203).

  In the first embodiment, key number information is input using a touch panel function mounted on a monitor 22 (not shown). This is to allow the user to confirm whether the EV 10 currently connected to the in-home power supply I / F 23 may be registered. In the case of automatic authentication, even if an unintended EV 10 is connected, it is registered, and there is a possibility of being charged for stealing or an unfamiliar tax. Although details are not described in the first embodiment, when the EV 10 is registered in the smart meter 21, it may be managed using an ID or a password in order to further secure safety. Needless to say. Furthermore, when registering the EV 10 in the power billing server 33, which will be described later, it goes without saying that registration and management of the EV 10 may be performed by inputting an ID and a password.

  When the input of the EV10 key number is completed in the previous S203, the CPU 81 displays a confirmation message on the monitor 22 in the home 20 in order to confirm whether or not the user can register the EV10 again (S204). After confirming the contents including the displayed key information, if the user registers the EV 10 in the smart meter 21 and there is no problem, the user inputs the fact using the touch panel function of the monitor 22 (not shown). If the user does not approve EV10 registration in S204, the process ends. If the user permits registration, the CPU 61 in the smart meter 21 manages the key information input by the user to the EV10 by the EV10. In order to confirm whether or not it matches the key information, a key number confirmation request is output to the EV 10 (S205) (see FIG. 12).

On the other hand, when transmission of the registration request is completed in S161 in FIG. 9, the EV 10 side waits until a response from the smart meter 21 at home is received (S162, S163). If the key number confirmation request cannot be received even after waiting for a predetermined time (S163), a timeout process I is performed (S164).
Specifically, if reception is not possible after waiting for a predetermined time, it is assumed that an error or the like is mixed during communication and the registration request cannot be received by the smart meter 21, and the registration request is retransmitted. In the first embodiment, when the retransmission is performed three times and there is no response from the smart meter 21, the EV 10 ends the registration process of the smart meter 21 at home.
When the response from the smart meter 21 at home is received in the previous S162, it is confirmed whether it is a key number confirmation request (S165). If it is not a key number confirmation request, a process based on the received packet is performed (S166), and the process waits until a response from the next smart meter 21 is received.

If the key number confirmation request is received in S165, it is confirmed whether the key number sent from the smart meter 21 at home is for the own vehicle (S167). If the key number is not for the own vehicle, the key number is different. A key number confirmation response having flag information indicating this is transmitted to the smart meter 21, and a next key number confirmation request retransmitted from the home smart meter 21 is awaited (S168). In the first embodiment, since the user is likely to miss the key number input, the user requests re-input to input the key number again.
If it matches the key number of the vehicle in the previous S167, a key number confirmation response including flag information indicating that the key number is correct is transmitted to the smart meter 21 (S169). Next, it is determined whether an EV 10 registration completion response is received from the smart meter 21 at home (S170).

Returning to FIG. 10, the smart meter 21 that has transmitted the key number confirmation request in S205 waits for a predetermined time until receiving the key number confirmation response from the EV 10 (S206, S207). When the predetermined time has passed, timeout process III is performed (S208).
Specifically, if reception is not possible after waiting for a predetermined time, it is assumed that the EV 10 has not received the key number confirmation request due to an error in the middle of communication, and the key number confirmation request is retransmitted. In the first embodiment, retransmission of data with the same content is repeated three times, and if there is no response, it is determined that the connection of the EV 10 is cut off, and the registration flow of the EV 10 is terminated.

  On the other hand, when the key number confirmation response is received in S206, the CPU 61 in the smart meter 21 confirms whether or not the key number matches that of the EV10 (S209). If it is determined that the key number has been input incorrectly, the process returns to S203, and the procedure from the key number input is repeated again. This repeat is repeated a maximum of 3 times, and if the key number does not match after repeating 3 times, it is determined that an EV different from the EV 10 to be registered is connected, and the registration flow of the EV 10 is terminated (S210). ).

  As a result of confirming the received key number confirmation response in S209, if the key number matches the key number of the EV 10 itself, the CPU 61 in the smart meter 21 registers the EV 10 in the power billing server 33. Accordingly, registration of the EV 10 to the power billing server 33 is requested (S211). Specifically, an EV registration request to which EV10 related information (key number, vehicle body manufacturing number, license plate information, etc.) and smart meter 21 related information (contract user name, address, etc.) is added is sent to the power billing server 33. To notify.

On the other hand, on the power billing server 33 side, as shown in FIG. 11, the CPU 81 waits until a packet from the smart meter 21 is received via the Internet communication circuit 86 (S241). When the packet from the smart meter 21 is received, the smart meter 21 is next authenticated (S242).
That is, the power billing server 33 authenticates the smart meter 21 based on, for example, an authentication procedure using a common key method. Specifically, the smart meter 21 performs encryption with a common key in the transmission packet, and the individual information of the smart meter 21 (the smart meter 21 has the MAC address, IP address, user name, address, EV10 possession Information such as presence / absence and the number of units used) is transmitted to the power billing server 33.

  The power billing server 33 decrypts the received information of the smart meter 21 with the common key and compares it with the customer registration database 88 in the power billing server 33. When the received individual information of the smart meter 21 matches the information in the customer registration database 88, in addition to the received information about the smart meter 21, information about the power billing server 33 (the MAC address of the power billing server 33, Information such as an IP address) is encrypted with a common key and transmitted to the smart meter 21. After this information transmission is completed, the power billing server 33 waits for a reception response from the smart meter 21. When reception of this reception response is completed, authentication of the smart meter 21 is completed.

  Thus, when the authentication of the smart meter 21 is successful in S242, the CPU 81 analyzes the packet received from the smart meter 21 and confirms whether it is a registration request for the EV 10 (S243). When it is not a registration request, after performing a predetermined process (S244), it returns to S241 and waits for the next packet reception from the smart meter 21.

  On the other hand, if the registration request of the EV 10 is received from the smart meter 21 in S243, the EV 10 confirms whether it is already registered in the power billing server 33 (S245). Then, if already registered, if the registered content is confirmed and there is no change, an EV registered response is transmitted to the smart meter 21 (S246). Then, it waits for an EV registered reception response from the smart meter 21 (S247). At that time, if the EV registered reception response is not received even after waiting for a predetermined time (S248), it is assumed that an EV registered packet cannot be received by the smart meter 21 due to an error or the like mixed during communication. The EV registered packet is retransmitted. In the first embodiment, retransmission of data with the same contents is repeated three times. If there is no response, it is determined that the connection has been lost due to a failure of the smart meter 21 and the time-out process VII is performed. Execute (S249), and the registration flow of EV10 is terminated. Similarly, when the EV registered reception response is received in S247, it is assumed that the registration confirmation of the EV 10 has been completed successfully, and the process ends.

If the EV 10 is not registered in the previous S245, or if the registration contents are changed, the EV 10 information sent in the EV 10 registration request packet and the smart meter 21 information are stored in the EV registration database 87, and Register in the customer registration database 88 (S250).
Specifically, the EV registration database 87 stores information related to the smart meter that collects tax information, as well as information that allows the EV 10 to be identified, such as the key number, manufacturing number, and license plate information of the EV 10. Similarly, the customer registration database 88 stores a MAC address, an IP address, a user name, an address, whether or not the EV 10 is owned, the number of owned vehicles, and the like regarding the smart meter 21.

When the registration of the EV10 information and the smart meter 21 information is completed in S250, the CPU 81 transmits an EV10 registration completion response to the smart meter 21 (S251) (see FIG. 12). When the registration completion response of EV10 is sent to the smart meter 21 in S251, the CPU 81 waits for a predetermined time to receive the registration completion reception response of EV10 from the smart meter 21 (S252, S253). If the predetermined time has passed, the timeout process VIII is performed (S254).
Specifically, if reception is not possible after waiting for a predetermined time, an EV 10 registration completion response is retransmitted on the assumption that an error or the like is mixed during communication and the EV 10 registration completion response cannot be received. In the first embodiment, retransmission of data with the same content is repeated three times. If there is no response, it is determined that the connection with the smart meter 21 has been terminated, and the registration flow of the EV 10 is terminated.

Returning to FIG. 10, when the CPU 61 in the smart meter 21 transmits an EV10 registration request to the power billing server 33 in S211, it waits for a predetermined time to receive a registration completion response of the EV10 from the power billing server 33 (S212, S213). When the predetermined time has passed, a timeout process IV is performed (S214).
Specifically, if reception is not possible after waiting for a predetermined time, the EV 10 registration request is retransmitted on the assumption that the power billing server 33 cannot receive the EV 10 registration request due to an error or the like during communication. In the first embodiment, retransmission of data with the same content is repeated three times. If there is no response, it is determined that the connection with the power billing server 33 has been disconnected, and the registration flow of the EV 10 is terminated.

When the EV10 registered response or EV10 registration completion response is received from the power billing server 33 in the previous S212, the EV10 registration completion reception response or EV10 registered reception response is sent to the power billing server 33 ( S215).
When the EV10 registration completion reception response is output to the power billing server 33, the CPU 61 registers EV10 information (key number, manufacturing number, license plate information, etc.) in the database in the billing / taxation management circuit 66 (S216). ). When the registration of the EV10 information is completed, the smart meter 21 transmits an EV10 registration completion response to the EV10 (S217).

Returning to FIG. 9, when EV 10 outputs a key number confirmation response in the previous S 169, CPU 41 in EV 10 receives an EV 10 registration completion response output by the process of S 217 in FIG. 10 from home smart meter 21. Wait for a predetermined time (S170, S171). If reception is not possible after a predetermined time, timeout processing II is performed (S172).
Specifically, if reception is not possible after waiting for a predetermined time, it is determined that an EV 10 registration completion response from the smart meter 21 at home cannot be received due to an error or the like during communication, and the smart meter 21 is registered. End the flow.

  On the other hand, when receiving the EV 10 registration completion response from the home smart meter 21 in S170, the CPU 41 registers the information of the home smart meter 21 in a database (not shown) in the taxation management circuit 7 (S173). . Then, after registration is completed, an information registration completion notification response of the home smart meter 21 is output to the home smart meter 21 (S174), and the registration flow of the home smart meter 21 is completed.

On the other hand, in FIG. 10, when the smart meter 21 outputs the EV 10 registration completion notification in the previous S217, the CPU 61 of the smart meter 21 subsequently responds to the information registration completion notification response output from the EV 10 by the process of S174 in FIG. Is received for a predetermined time (S218, S219). When the predetermined time has passed (S219), a timeout process V is performed (S219).
Specifically, if reception is not possible even after waiting for a predetermined time, it is assumed that the information registration completion notification response regarding EV10 transmitted by EV10 to smart meter 21 due to an error in the middle of communication could not be received. End the registration flow.

When the CPU 61 of the smart meter 21 receives the information registration completion notification response from the EV 10 in the previous S218, the CPU 61 next outputs the registration response of the EV 10 (S221). Subsequently, the EV 10 waits for a predetermined time until a registration response reception response to the registration response of the EV 10 is received (S222, S223). When the predetermined time has passed (S223), a timeout process VI is performed (S224). Specifically, if reception is not possible after waiting for a predetermined time, it is determined that the connection with the EV 10 is broken, and the EV 10 registration flow is terminated.
On the other hand, when the registration response reception response from the EV 10 is received in S222, the CPU 61 ends the registration flow of the EV 10.

Next, an authentication / connection process flow for mutual authentication and connection confirmation necessary for taxation when the EV 10 is connected to the smart meter 21 will be described with reference to FIGS.
In FIG. 13, when the EV 10 starts connection with the smart meter 21, it authenticates with the smart meter 21 (S281). Specifically, when the vehicle power I / F 8 and the home power I / F 23 are connected, the CPU 41 in the EV 10 transmits a probe request (connection request) to the smart meter 21 via the communication circuit 6. When receiving the probe request from the EV 10, the CPU 61 in the smart meter 21 transmits a probe response (connection permission) to the EV 10. When the probe response from the smart meter 21 is received, the EV 10 authenticates with the smart meter 21 based on an authentication procedure using a common key method, for example.

That is, as a specific example of the sequence at the time of authentication, as shown in FIG. 15, after receiving the probe response, the CPU 41 in the EV 10 sends an authentication request to the smart meter 21. When the authentication request is received, the smart meter 21 confirms whether the EV 10 is registered in the database in the accounting / taxation management circuit 66 based on the authentication request transmitted from the EV 10. If the EV 10 is registered as a result of the confirmation, the information of the smart meter 21 is put on the authentication response and transmitted to the EV 10. When the CPU 41 in the EV 10 receives the authentication response from the smart meter 21, the CPU 41 checks the information of the smart meter 21 registered in the database in the taxation management circuit 7 and determines whether the connected smart meter 21 has been registered. Confirm. If registered, an authentication reception response is transmitted to the smart meter 21. Thereafter, an association request is transmitted to the smart meter 21. The smart meter 21 that has received the association request outputs an association response to the EV 10 and ends a series of authentication sequences.
The authentication method is not limited to the common key method. When purchasing the EV 10, information such as a key number, a manufacturing number, and a license plate is registered in advance in a server (not shown) that manages the EV 10, and the server is registered. It goes without saying that authentication based on the used IEEE 802.1X may be used.

  On the other hand, as shown in FIG. 14, the smart meter 21 side authenticates the EV 10 in S321, and then confirms whether the EV 10 has been registered in the smart meter 21 based on this authentication (S322). When the EV 10 is not registered in the smart meter 21, the smart meter 21 confirms whether the EV 10 is registered with the user (S323). Specifically, a screen for confirming whether to register the EV 10 is displayed on the monitor 22 to confirm the user's intention to register. When it is determined in S323 that the user does not register, the connection process with the EV 10 is terminated.

On the other hand, if it is determined in S323 that the user registers EV10, a registration request is transmitted to EV10 (S324), and EV10 registration processing and authentication processing are performed (S325).
On the other hand, if EV10 has already been registered in S322, or if EV10 registration processing and authentication processing are completed in S325, CPU 61 in smart meter 21 stores the tax information stored in EV10 for EV10. Send tax information sending request to send.

  Returning to FIG. 13, on the EV 10 side, when authentication with the smart meter 21 is completed in the previous S281, reception of a packet from the smart meter 21 is waited (S282). When the packet is received, the packet is analyzed, and it is confirmed whether it is a tax information transmission request from the smart meter 21 (S283). If it is not a tax information transmission request, individual processing is performed. After the execution of the individual process, basically, the charge amount information (information such as the charge amount and the charging date / time) of the battery 1 is transmitted to the smart meter 21 and the connection process with the smart meter 21 is terminated. However, if the individual processing content from the smart meter 21 is EV10 registration, the processing returns to S282 after the processing is completed.

  If it is determined that the tax information transmission request from the smart meter 21 has been received in the previous S283, the CPU 41 in the EV 10 determines from the database in the taxation management circuit 7 the information on the amount of untaxed charge when charging at a hotel ( Information on the amount of charge, date of charge, etc.), and information on discharges that have not been adjusted for tax adjustments, such as when discharging to home appliances and power systems in the home (information such as amount of discharge, date / time of discharge, discharge time, discharge request source) Are transmitted as tax information to the smart meter 21 via the communication circuit 6 (S285).

On the other hand, on the smart meter 21 side, as shown in FIG. 14, the CPU 61 that has transmitted the tax information transmission request in S326 waits for a predetermined time of notification of tax information from the EV 10 (S327, S328). If the tax information notification from the EV 10 cannot be received even after waiting for a predetermined time, the time-out process 11 is performed (S329).
Specifically, if it cannot be received even after waiting for a predetermined time, the tax information transmission request is retransmitted on the assumption that the tax information transmission request transmitted from the smart meter 21 to the EV 10 cannot be received due to an error or the like during the communication. . In the first embodiment, retransmission of data with the same content is repeated three times, and when there is no response, the reception of battery 1 charge amount information from EV 10 is awaited (S338).

  When the tax information is received in the previous S327, the CPU 61 in the smart meter 21 stores the received tax information in a database in the accounting / taxation management circuit 66. At that time, the contents of the tax information are analyzed, and if there is information already registered, the information is not stored. When the storage of the tax information is completed, the CPU 61 transmits a tax information reception response to the EV 10 (S330).

On the other hand, on the EV 10 side, as shown in FIG. 13, when the transmission of tax information is completed in S285, the CPU 41 in the EV 10 waits for a predetermined time to receive a tax information reception response from the smart meter 21 (S286, S287). . If the tax information reception response notification from the smart meter 21 cannot be received even after waiting for a predetermined time, a timeout process IX is performed (S288).
Specifically, if the information cannot be received even after waiting for a predetermined time, the tax information of the EV 10 transmitted from the EV 10 to the smart meter 21 cannot be received due to an error in the middle of communication, and the tax information is retransmitted. In the first embodiment, retransmission of data with the same content is repeated three times, and when there is no response, the charge amount information of the battery 1 is sent (S295), and the connection process with the smart meter 21 is terminated.

  The CPU 41 in the EV 10 that has received the tax information reception response output from the smart meter 21 by the processing of S330 in FIG. 14 in the previous S286 analyzes the packet in the reception response. In the first embodiment, the tax information transmitted in the response packet from the smart meter 21 is added in order to confirm whether the tax information is surely notified to the smart meter 21. Then, the CPU 41 in the EV 10 that has received the tax information reception response analyzes the packet, and the tax information sent in S285 and the tax information added to the response packet do not match, not shown. However, the tax information is sent again from the EV 10 to the smart meter 21.

  On the other hand, if the tax information matches, a tax information flag clear request is transmitted to the smart meter 21 (S289). Although the details of this tax information flag will be described later, the charge amount information (information such as the charge amount and the charging date and time) that the EV 10 has not taxed and is not taxed, or the discharge information that is not adjusted for the tax settlement discharged from the battery 1 ( This is a flag indicating information such as discharge amount, discharge date and time. This flag is managed together with this tax related information in the database in the taxation management circuit 7 in the EV 10.

On the other hand, the smart meter 21 waits for a predetermined time until a tax information flag clear request is transmitted from the EV 10 when the tax information reception response is transmitted to the EV 10 in S330 of FIG. 14 (S331). If the tax information flag clear request from the EV 10 cannot be received even after waiting for a predetermined time, the time-out process 12 is performed (S333).
Specifically, if the information cannot be received even after waiting for a predetermined time, the tax information reception response is retransmitted on the assumption that the tax information reception response cannot be received due to an error or the like mixed during communication. On the other hand, when the tax information flag clear request is received in S331, the CPU 61 transmits a tax information flag clear request confirmation response to the EV 10.

Returning to FIG. 13, the CPU 41 in the EV 10 that has transmitted the tax information flag clear request in S289 waits for a predetermined time to receive a tax information flag clear request confirmation response from the smart meter 21 (S290). If the tax information flag clear request confirmation response from the smart meter 21 cannot be received even after waiting for a predetermined time, a timeout process X is performed (S292).
Specifically, if it cannot be received even after waiting for a predetermined time, an error or the like is mixed during communication and the tax information flag clear request cannot be received by the smart meter 21, and the tax information flag clear request is retransmitted. The retransmission is repeated up to three times, and when the tax information flag clear request confirmation response is not received, the charge amount information (information such as the charge amount and the charge date / time) of the battery 1 is notified (S295), and the smart meter 21 End the connection process.

  When the EV 10 receives the tax information flag clear request confirmation response in S290, the CPU 41 clears the tax information flag registered in the database in the tax management circuit 7 (S293). At that time, information such as the charge amount, the charge date / time, the discharge amount, and the discharge date / time stored in association with the taxation information flag is also deleted. Then, after a tax information flag clear completion response is transmitted to the smart meter 21 (S294), the charge amount information of the battery 1 (information such as the charge amount and the charging date / time) is notified to the smart meter 21 (S295). End the connection process.

On the other hand, when the smart meter 21 transmits a tax information flag clear request confirmation response in S334 of FIG. 14, the CPU 61 waits for a predetermined time to receive a tax information flag clear completion response from the EV 10 (S335, S336). If the tax information flag clear completion response cannot be received from the EV 10 even after waiting for a predetermined time, the time-out process 13 is performed (S337).
Specifically, if it cannot be received even after waiting for a predetermined time, it is assumed that an error or the like is mixed during communication and the tax information flag clear request confirmation response cannot be received by the smart meter 21, and the tax information flag is cleared. Resend request acknowledgment.

  When receiving the tax information flag clear completion response in the previous S335, the CPU 61 stores that fact in the database in the accounting / taxation management circuit 66. Thereby, the billing / taxation management circuit 66 can confirm that the exchange of information regarding the tax at the time of charging / discharging with the EV 10 has been completed. If this information is not stored, the same information is sent when connecting to the EV 10 next time, so there is a possibility of double taxation or adjustment. Tax data is stored in the database even after it is sent. Then, the taxation information sent from the EV 10 at the time of the next connection is confirmed, and the taxation information that does not include the same information is deleted from the database in the accounting / taxation management circuit 66 at that time.

  When the tax information flag clear completion response is received in the previous S335, the CPU 61 in the smart meter 21 waits for a predetermined time for notification of the charge amount information (information such as the charge amount and the charging date and time) of the battery 1 in the EV 10. (S338, S339). If the charge amount information of the battery 1 from the EV 10 cannot be received even after waiting for a predetermined time, the connection processing flow with the EV 10 is ended (S340).

  In addition, since the charge amount information of the battery 1 is confirmed at the start of charging of the battery 1 or at the start of discharge from the battery 1, processing such as retransmission is not performed in the first embodiment. In the first embodiment, the CPU 41 of the EV 10 has tax-related information (charge amount, charge date / time, charge location, tax information flag status, discharge amount, discharge) stored in the database in the taxation management circuit 7. Date, time of discharge, location of discharge, taxation information flag, etc.) are displayed when there is a request from the user on a monitor such as a car navigation system (not shown). As a result, there is an effect that the user can grasp how much tax is unpaid.

Next, a control flow when charging the EV 10 from the home power supply I / F 23 will be described with reference to FIGS. 16 and 17.
First, in FIG. 16, when charging the battery 1 of the EV 10 is started, the CPU 41 in the EV 10 identifies the type of the power source I / F of the connection destination and changes the processing in the charge / discharge control circuit 4 based on the result. .

  Specifically, when it is specified that the charging is performed at the charging station (S361), the charging related information (in the battery 1) necessary for charging the battery 1 with respect to the charging station according to a predetermined procedure. The storage amount, the amount of charge to be charged this time, the control method of the battery 1 at the time of charging, etc.) are sent (S362). The control method of the battery 1 at the time of charging is, for example, charging with a constant current (for example, 20 A) until the amount of charge of the battery 1 reaches 80%, and after reaching 80%, a constant voltage (for example, 320 V). This refers to a control method such as charging with a battery.

When the transmission of the charging related information is completed in the previous S362, charging of the battery 1 is started (S363). When charging is started, the CPU 41 instructs the charge amount measurement circuit 2 to measure the charge amount. When the measurement start instruction is input from the CPU 41, the charge amount measurement circuit 2 clears the count value of the counter that measures the electric energy to “0”. When the counter on the left in the charge amount measurement circuit 2 is cleared, the CPU 41 issues a charge instruction to the DC / DC converter control circuit 47. When the DC / DC converter control circuit 47 receives the charging instruction from the CPU 41, the DC / DC converter 48 is controlled based on the charging control method notified from the EV 10 (the current value, voltage, etc. are controlled based on the notified information). And charging the battery 1 is started (S363).
In addition, the charge amount information in the battery 1 is sequentially obtained from the charge / discharge control circuit 4 in the EV 10 via the communication I / F 6. Needless to say, the charging voltage and charging current information may be obtained from the charging / discharging control circuit 4 in the EV 10, and the DC / DC converter 48 may be controlled based on the information.

  Then, when charging of the battery 1 is started in the previous S363, the CPU 41 monitors the charge amount information output from the charge amount measurement circuit 2 via the charge taxation calculation circuit 45, and the battery 1 is fully charged. Alternatively, when the amount of power specified by the user before charging is reached, an instruction is issued to the DC / DC converter control circuit 47 and the charging taxation calculation circuit 45 to end the charging (S364, S365). When the charging end instruction is output from the CPU 41, the DC / DC converter control circuit 47 stops the output of the control signal to the DC / DC converter 48 and ends the charging. In addition, when the charging tax calculation circuit 45 receives a charge end instruction from the CPU 41, the charge tax calculation circuit 45 reads the final charge amount from the charge amount measurement circuit 2, and stores the charge amount, the charging date and time, the charging location ( The home, charging stand, other than home, etc.) are stored (S366). In the first embodiment, the tax information flag indicating that the tax has not been collected has already been paid together with the charge power charge at the charging station, so it is cleared and registered in the database. When the registration of the charge amount information in the database is completed, the CPU 41 transmits a notification to the effect that charging has ended to a control terminal of a charging station (not shown) (S367), and the charging process to the EV 10 is terminated.

  On the other hand, if it is not a charging stand in S361, it is confirmed whether or not the connection destination is the home smart meter 21 registered as a tax collection port (S368). If the smart meter 21 at home is not registered as a tax collection port, the CPU 41 confirms whether information on the smart meter 21 at home is registered in the EV 10 (S369). If the home smart meter 21 is not registered in the database in the taxation management circuit 7 as a result of the confirmation, the process ends without charging. The reason is that when the battery 1 is charged by the smart meter 21, the EV 10 in which the home smart meter 21 is not registered cannot collect the tax on the amount of charge, so it is necessary to prohibit charging the EV 10. is there. On the other hand, in the case of a charging station, it is not necessary to prohibit charging as described above, because taxes can be collected at the time of charging, as in the case of a gas station.

  If the information of the smart meter 21 at home is stored in the EV 10 in S369, the CPU 41 follows the predetermined procedure, and charging related information (battery necessary for charging the battery 1 to the smart meter 21 is determined. 1), the charge amount to be charged this time, the control method of the battery 1 at the time of charge, etc.) are sent (S370).

  When the transmission of the charging related information is thus completed, charging of the battery 1 is started (S371). When charging is started, the CPU 41 instructs the charge amount measurement circuit 2 to measure the charge amount. When the measurement start instruction is input from the CPU 41, the charge amount measurement circuit 2 clears the count value of the counter that measures the electric energy to “0”. When the counter on the left in the charge amount measurement circuit 2 is cleared, the CPU 41 issues a charge instruction to the DC / DC converter control circuit 47. When receiving the charge instruction from the CPU 41, the DC / DC converter control circuit 47 controls the DC / DC converter 48 based on a predetermined charge control method, and starts charging the battery 1 (S371).

Then, the CPU 41 monitors the charge amount information output from the charge amount measurement circuit 2 via the charge taxation calculation circuit 45, and terminates charging when the battery 1 is fully charged or reaches the amount of power specified by the user before charging. Instructions are issued to the DC / DC converter control circuit 47 and the charge taxation calculation circuit 45 so as to do this (S372, S373).
When the charging end instruction is output from the CPU 41, the DC / DC converter control circuit 47 stops outputting the control signal to the DC / DC converter 48 and ends the charging. In addition, when the charging tax calculation circuit 45 receives a charge end instruction from the CPU 41, the charge tax calculation circuit 45 reads the final charge amount from the charge amount measurement circuit 2, and stores the charge amount, the charging date and time, the charging location ( Home, charging stand, other than home, etc.) are stored (S374). At this time, a tax information flag indicating that the tax has not been collected is also set and stored in the database. When the registration of the charge amount information in the database is completed, the CPU 41 transmits a charge completion notification indicating that the charging is completed to the smart meter 21 (S375), and the charging process to the EV 10 is terminated.

  In the case of charging from the smart meter 21 at home registered as a tax collection port in the previous S368, the CPU 41 of the EV 10 follows the predetermined procedure when charging the battery 1 to the smart meter 21. The charging related information (the amount of charge stored in the battery 1, the amount of charge to be charged this time, the control method of the battery 1 at the time of charging, etc.) is sent (S376).

  When the transmission of the charging related information is finished, charging of the battery 1 is started (S377). When charging is started, the CPU 41 instructs the charge amount measurement circuit 2 to measure the charge amount. When the measurement start instruction is input from the CPU 41, the charge amount measurement circuit 2 clears the count value of the counter that measures the electric energy to “0”. When clearing the counter on the left in the charge amount measuring circuit 2 is completed, the CPU 41 issues a charge instruction to the DC / DC converter control circuit 47. When receiving the charge instruction from the CPU 41, the DC / DC converter control circuit 47 controls the DC / DC converter 48 based on a predetermined charge control method and starts charging the battery 1.

Then, the CPU 41 monitors the charge amount information output from the charge amount measurement circuit 2 via the charge taxation calculation circuit 45, and terminates charging when the battery 1 is fully charged or reaches the amount of power specified by the user before charging. The DC / DC converter control circuit 47 and the charge taxation calculation circuit 45 are instructed to do so (S378, S379).
When the charging end instruction is output from the CPU 41, the DC / DC converter control circuit 47 stops outputting the control signal to the DC / DC converter 48 and ends the charging. In addition, when the charging tax calculation circuit 45 receives a charge end instruction from the CPU 41, the charge tax calculation circuit 45 reads the final charge amount from the charge amount measurement circuit 2, and stores the charge amount, the charging date and time, the charging location ( The home, charging stand, other than home, etc.) are stored (S380). At this time, a tax information flag indicating that the tax has not been collected is also set and stored in the database.
When the registration of the charge amount information in the database is completed, the CPU 41 transmits a charge completion notification to the smart meter 21 indicating that the charge is completed (S381). At that time, the smart meter 21 is also notified of the charge amount information (charge amount, charge date and time) charged in the battery 1.

When the charge completion notification and the charge amount information are sent to the smart meter 21 in the previous S381, the CPU 41 waits for a predetermined time to receive a charge completion / charge amount information reception response from the smart meter 21 (S382, S383). If the charging completion / charge amount information reception response from the smart meter 21 cannot be received even after waiting for a predetermined time (S383), the charging process to the EV 10 is terminated.
On the other hand, when the charge completion / charge amount information reception response is received in S382, the information about the charge amount in the received packet is confirmed. If the information is the same as the content sent earlier, the tax information flag is cleared and the EV 10 is returned. The charging process is terminated. Although not shown, if the contents are different, the process returns to S381 and the charge completion notification / charge amount information is sent to the smart meter 21 again.

Next, the operation of the smart meter 21 when charging the battery 1 of the EV 10 will be described using the control flow shown in FIG.
The CPU 61 in the smart meter 21 waits until receiving the charging related information output from the EV 10 by the processes of S362, S370, and S376 in FIG. 16 (S401). When receiving the charge-related information, the CPU 61 issues a charge instruction to the EV battery charge / discharge control management circuit 67 and sets the received information regarding the charge control method to the AC / DC converter control circuit 68. When the setting of this information is completed, the CPU 61 issues a charge start instruction to the EV battery charge / discharge control management circuit 67 and the AC / DC converter control circuit 68 (S402).

When the charging start time is received, the AC / DC converter control circuit 68 outputs a control signal to the AC / DC converter, and starts power supply to the battery 1 in the EV 10 (S403). The AC / DC converter control circuit 68 continues to supply power to the battery 1 by outputting a control signal to the AC / DC converter 69 until a charge completion notification is received from the EV 10 (S404).
When receiving a charge completion notification from the EV 10, the CPU 61 outputs a charge stop instruction to the EV battery charge / discharge control management circuit 67 and the AC / DC converter control circuit 68. Upon receiving this instruction, the AC / DC converter control circuit 68 stops outputting the control signal to the AC / DC converter 69 (S405).

  On the other hand, when instructed to stop power supply in S405, the CPU 61 searches the database in the accounting / taxation management circuit 66 to check whether the EV 10 is registered in its own smart meter 21 (S406). If the EV 10 is not registered in this database, the charging process for the EV 10 is terminated.

If EV10 has been registered in its own smart meter 21 in the previous S406, whether or not the charge amount information (charge amount, charging date, etc.) of the battery 1 output by the processing of S381 in FIG. Confirm. If the charge amount information is not sent, the EV charging process is terminated. On the other hand, if the charge amount information has been transmitted, the transmitted charge amount information is stored in the database in the charging / taxation management circuit 66 (S408).
When the recording of the charge amount information in the database is completed, the CPU 61 creates a charge completion / charge amount information reception response including the charge amount information stored in the previous S409, and transmits the response to the EV 10 (S409). The process ends.

  In the first embodiment, the charge amount to the battery 1 in the EV 10 is measured by the charge amount measurement circuit 2 in the EV 10. In this charging, for example, when a lithium ion battery is used as the battery 1, when the temperature of the battery 1 rises, the EV 10 operates the in-vehicle device (air conditioner) 9 to protect the battery 1. Reduce the temperature. For this reason, when all the power supplied from the smart meter 21 is taxed, the user consumes it in the vehicle equipment such as an air conditioner, the DC / DC converter 48 for charging / discharging, etc. in addition to the power supplied to the battery 1. Electricity will be taxed, and you will be charged more than necessary. Therefore, in the first embodiment, only the power supplied to the battery 1 is subject to taxation, and the charging power amount is notified from the EV 10 to the smart meter 21. In addition, when all the electric power used at the time of the said charge becomes a taxable object, it cannot be overemphasized that the supplied electric energy may be measured with the smart meter 21.

Next, control when discharging from the EV 10 to the home will be described with reference to FIGS. 18 and 19.
The discharge from the EV 10 is started by a discharge request transmitted from the smart meter 21 to the EV 10.

  First, in FIG. 18, when the CPU 41 in the EV 10 receives a discharge request from the smart meter 21 (S441), the discharge request source smart meter 21 is registered in the database in the taxation management circuit 7 as a tax collection port. It is confirmed whether the smart meter 21 is at home (S442). As a result of the confirmation, if the smart meter 21 is not registered as a tax collection port, in the first embodiment, the discharge request from the smart meter 21 is discarded, and the discharge flow of the EV 10 is terminated.

For example, this is based on a discharge request from the smart meter 21 to reduce peak power while connected at a location other than the home smart meter 21 registered as a tax collection port (for example, a smart meter at a friend's home). If the battery 1 is discharged, the battery 1 is not intended to be discharged, and the battery 1 is not fully charged when returning home, or the battery 1 is discharged without the user's knowledge. In order to prevent the occurrence of problems, in the first embodiment, it is assumed that a discharge request from other than the home smart meter 21 registered as a tax collection port is not accepted.
It should be noted that since the discharge power amount is also managed by the taxation management circuit 7 for discharges other than the home smart meter 21 registered as a tax collection port, the tax collected by the user can be adjusted. It may be configured to accept a discharge request from other than the smart meter 21 registered at home.

  If it is a discharge request from the smart meter 21 at home registered as a tax collection port in the previous S442, a discharge request reception response is transmitted to the smart meter 21 (S443). Then, when the discharge request reception response is transmitted to the smart meter 21, the CPU 41 confirms the stored amount of the battery 1 stored in the taxation management circuit 7 (S444). And CPU41 calculates the dischargeable amount from the battery 1 based on the information of this electrical storage amount, and transmits the calculation result to the smart meter 21 (S445).

  In the first embodiment, when calculating the dischargeable amount, first, the user is allowed to set a lower limit value of the charged amount. Specifically, the minimum stored amount of the battery 1 is calculated from the travel distance when the user urgently uses the automobile, and is set. Specifically, for example, the user sets a travel distance (for example, 50 km) when urgently used, and the lowest power amount that can be traveled by the set distance is set as the lower limit value of the storage amount.

  On the other hand, on the smart meter 21 side, as shown in FIG. 19, for example, when an energy saving request is received from the power billing server 33, the battery 10 of the EV 10 is discharged in response to the energy saving request. At that time, the smart meter 21 checks whether or not the EV 10 connected via the in-house power supply I / F 23 is registered in the charging / taxing management circuit 66 (S481). If the EV 10 is not registered in the database in the accounting / taxation management circuit 66, the discharge flow is terminated. Note that the discharge flow is also terminated when the EV 10 is not connected to the home power supply I / F 23.

On the other hand, if the EV 10 is registered in the database in the billing / taxation management circuit 66 in the previous S481, the CPU 61 generates a discharge request and transmits it to the EV 10 (S482). Then, the CPU 61 waits for a predetermined time for a discharge request reception response from the EV 10 (S483, S484). When the predetermined time has passed (S484), timeout processing 15 is performed (S485).
Specifically, if reception is not possible after waiting for a predetermined time, an error or the like is mixed during communication, and the discharge request is retransmitted on the assumption that the discharge request cannot be received by the EV 10. In the first embodiment, retransmission of data with the same content is repeated three times, and if there is no response, it is determined that the connection of the EV 10 is cut off, and the registration flow of the EV 10 is terminated.

When the discharge request reception response is received from the EV 10 in the previous S483, the notification of the dischargeable electric energy from the battery 1 output by the process of S445 of FIG. 18 from the EV 10 is waited for a predetermined time (S485, S486). When the predetermined time has passed (S486), timeout processing 16 is performed (S488). Specifically, if reception is not possible after waiting for a predetermined time, it is determined that the connection with the EV 10 has been lost, and the discharging process from the EV 10 is terminated.
When the notification of the dischargeable power amount transmitted from the EV 10 in the previous S486 is received, the CPU 61 determines the discharge power amount from the EV 10 and the total discharge power amount (S489). In the first embodiment, the discharged electric energy indicates an average value of electric energy discharged from the battery 1 in the EV 10 per unit time, and the total discharged electric energy is the battery in the EV 10 according to the current discharge request. 1 indicates the total amount of power discharged.

When the discharge power amount from the EV 10 and the total discharge power amount are determined in the previous S489, the CPU 61 transmits discharge control information (information such as the discharge power amount and the total discharge power amount) to the EV 10 (S490), Wait for the start of discharge from the EV 10 (S491).
When the discharge from the EV 10 is started, the CPU 61 monitors whether or not the discharge can be completed (S492). Specifically, the discharge from the EV 10 is completed when the energy saving target presented by the power billing server 33 is achieved by receiving a discharge stop request from the power billing server 33 or by saving energy in the home appliance.

When the discharge is not completed in the previous S492, it is confirmed whether or not the total discharge power amount from the battery 1 in the EV 10 does not exceed the total discharge power amount calculated in the previous S490 (S493). If the total discharge power amount has not exceeded, the process returns to S492 to continue monitoring the end of discharge.
If the total discharge power amount has exceeded the previous S493, the CPU 61 transmits a discharge stop request to the EV 10 (S494), and sends the EV battery charge / discharge control management circuit 67 from the EV 10 to the EV battery charge / discharge control management circuit 67. Instruct to stop accepting discharge power. When the acceptance stop instruction is input, the EV battery charge / discharge control management circuit 67 instructs the AC / DC converter control circuit 68 not to accept the discharge power from the battery 1 in the EV 10. When the left instruction is input, the AC-DC converter control circuit 68 stops outputting the control signal supplied to the AC / DC converter 69.

On the other hand, on the EV 10 side, as shown in FIG. 18, when the CPU 41 completes the transmission of the dischargeable power amount information in S445, the discharge control information (discharge power amount) output from the smart meter 21 by the process of S490 in FIG. ), And waits for reception of the total discharge electric energy (S446).
Upon receiving this discharge control information, the CPU 41 issues an instruction to the discharge taxation calculation circuit 46 and the DC / DC converter control circuit 47 to start discharging from the battery 1 (S447). When the discharge start instruction is received from the CPU 41, the discharge tax calculation circuit 46 instructs the discharge amount measurement circuit 3 to start measuring the discharge amount. The discharge amount measurement circuit 3 that has received an instruction to start discharge amount measurement from the discharge tax calculation circuit 46 first clears the count value of a discharge amount measurement counter in a circuit (not shown) to “0”. Then, the discharge amount measuring circuit 3 starts measuring the amount of discharge power discharged from the battery 1.

  On the other hand, when the DC / DC converter control circuit 47 receives a discharge start instruction from the CPU 41, the DC / DC converter control circuit 47 waits for the CPU 41 to notify the information related to the discharge sent from the smart meter 21. When the discharge information is notified from the CPU 41, generation of a control signal for the DC / DC converter 48 is started based on the amount of discharge electric power and the like to execute discharge (S447). When the discharge from the battery 1 is started, the CPU 41 also monitors the discharge stop request notified from the smart meter 21 (S448).

  When receiving the discharge stop request from the smart meter 21, the CPU 41 instructs the DC / DC converter control circuit 47 to stop the discharge from the battery 1. When receiving the discharge stop instruction from the CPU 41, the DC / DC converter control circuit 47 stops outputting the control signal to the DC / DC converter 48 (S450).

  When the discharge stop request from the smart meter 21 is not received in the previous S448, the CPU 41 monitors the discharge amount output from the discharge tax calculation circuit 46 (S449). Then, it is confirmed whether or not the discharge amount exceeds the total discharge amount notified from the smart meter 21. If it exceeds, the CPU 41 instructs the DC / DC converter control circuit 47 to stop the discharge from the battery 1. The DC / DC converter control circuit 47 that has received the instruction stops outputting the control signal to the DC / DC converter 48, so that the discharge is stopped (S450).

When the discharge from the battery 1 stops in the previous S450, the CPU 41 writes information relating to the current discharge in the database in the taxation management circuit 7 (S451). Specifically, after outputting a discharge stop instruction to the DC / DC converter control circuit 47, the CPU 41 acquires the current discharge amount measured by the discharge amount measurement circuit 3 via the discharge tax calculation circuit 46.
Then, the discharge amount information, date / time information, discharge location information, and the like acquired in S451 are stored in a database (not shown) in the taxation management circuit 7. At that time, a tax information flag indicating that the tax has not been collected is also set.

  When the storage of the discharge-related information in the database in the taxation management circuit 7 is thus completed, the CPU 41 generates and transmits a discharge completion / discharge amount notification to the smart meter 21 (S452). Then, it waits for a predetermined time to receive a discharge completion / discharge amount notification reception response from the smart meter 21 (S453). If the discharge completion / discharge amount notification reception response is not received even after waiting for a predetermined time, the discharge process from the battery 1 is terminated (S454).

  If the process is terminated in S454, the information regarding the discharge stored in the database in the taxation management circuit 7 is again stored when the EV 10 is next connected to the home smart meter 21 registered as a tax collection port. In order to transmit, the taxation information flag indicating that the tax has not been collected is not cleared but stored in the database.

  The reason is that, for example, when the EV 10 needs to be used suddenly during the discharge from the EV 10, the connection with the in-home power supply I / F 23 may be disconnected without following the procedure described above. At that time, the discharge amount information from the battery 1 of the EV 10 is disconnected from the home power supply I / F 23 before being notified to the smart meter 21, so that the tax rate cannot be adjusted for the discharge amount. Arise. In order to cope with this, in the first embodiment, information on the discharge amount is temporarily stored in the taxation management circuit 7 in the EV 10. In this way, even when the connection to the home power supply I / F 23 is disconnected before notifying the smart meter 21 of the discharge amount after the discharge, the discharge amount related information remains in the database in the taxation management circuit 7 in the EV 10. Therefore, tax information can be notified when connected to the smart meter 21 at home registered as a tax collection port next time, and there is an effect that the user does not pay tax unnecessarily.

  When the EV 10 receives the discharge completion / discharge amount notification reception response from the smart meter 21 in the previous S453, the CPU 41 sends a tax information flag clear request to the smart meter 21 (S455). When this tax information flag clear request is transmitted, the CPU 41 waits for a predetermined time to receive a tax information flag clear request reception response from the smart meter 21. If the signal cannot be received after waiting for a predetermined time, the discharging process is terminated as it is.

  On the other hand, when receiving the taxation information flag clear request reception response from the smart meter 21, the CPU 41 confirms the content of the current discharge information added to the taxation information flag clear request reception response. The tax information flag related to the current discharge stored in the database in the tax management circuit 7 is cleared, and the discharge process is terminated (S458). On the other hand, if they are not the same, although not shown, it is determined that an error has occurred during communication, and nothing is done, and the discharge process is terminated.

  On the other hand, on the smart meter 21 side, as shown in FIG. 19, when the CPU 61 transmits a discharge stop request to the EV 10 (S494), the discharge completion / discharge amount notification output from the EV 10 in the process of S452 in FIG. Is received for a predetermined time (S495). If the discharge completion / discharge amount notification cannot be received even after waiting for a predetermined time, a timeout process 17 is performed. Specifically, the AC / DC converter control circuit 68 confirms whether or not the electric power from the EV 10 is supplied. If the discharge from the EV 10 is not stopped as a result of the confirmation, the discharge stop request is retransmitted. On the other hand, when it has stopped, the discharge process from EV10 is complete | finished as it is. In the time-out process 17, the retransmission of the discharge request is repeated until the discharge stop can be confirmed. This is to prevent the battery 1 from being unnecessarily discharged from the EV 10.

  When the discharge completion / discharge amount notification is received in the previous S495, the CPU 61 extracts information on the discharge amount in the packet and stores it in a database (not shown) in the accounting / taxation management circuit 66. When the storage in the database is completed, the CPU 61 creates a discharge completion / discharge amount information notification reception response based on the received discharge amount information, and transmits it to the EV 10 (S498). Then, it waits for a predetermined time to receive a tax information flag clear request from the EV 10 (S499). If the reception is not possible after a predetermined time, the discharging process of the EV 10 is terminated as it is. On the other hand, if it can be received, a tax information flag clear request is generated and transmitted to the EV 10 (S501). At this time, the fact that the taxation information clear request has been received is stored in the database in the accounting / taxation management circuit 66.

Next, the exchange of billing data between the smart meter 21 and the power billing server 33 when calculating the power bill will be described with reference to FIGS. 20 and 21.
First, in FIG. 20, when the smart meter 21 receives the user power consumption / EV taxable power amount transmission request from the power billing server 33 (S521), the CPU 61 in the smart meter 21 has been authenticated with the power billing server 33. It is confirmed whether it exists (S522). If authentication is not performed, authentication processing is performed (S523).

  If the power billing server 33 has already been authenticated in the previous S522 or the authentication is completed in the previous S523, the CPU 61 calculates the amount of power used by the user (S524). When the calculation of the amount of power used by the user is completed, the CPU 61 searches the database in the accounting / taxation management circuit 66, and information on the amount of energy charged to the EV 10 subject to taxation at the time of the current charge calculation ( Information on charging power amount, charging date and time, charging location, etc.). Next, the discharge power amount information (information such as the discharge power amount, the discharge date and time, and the discharge location) that is not adjusted (to be reduced) is extracted (S526). Subsequently, although not shown in the drawing, regenerative power amount information obtained by regenerating the generated power generated by a solar cell or the like or the discharge power from the EV in the AC power system is extracted (S527).

  Next, other power usage related information is extracted from the database (S528). The other power usage amount related information refers to information such as the amount of discharged power discharged from the EV 10 at the request of the power billing server 33, the number of discharges, or the number of times of energy saving performed at the request of the power billing server 33. In the first embodiment, when the user performs energy saving or discharge from the EV 10 in response to a request from the power billing server 33, it is assumed that the user's power usage fee is reduced, and other power usage related information as described above is provided. The power billing server 33 is notified. As a result, a user who has performed energy saving and discharge from the EV 10 at the request of the power billing server 33 during peak power has the merit of reducing the power bill. On the other hand, for electric power companies, peak power can be reduced, fuel is not consumed more than necessary at thermal power plants, etc., and CO2 generation can be minimized, and fuel costs can be saved. effective.

When the collection of information necessary for calculating the user power usage fee / taxed power amount to the EV 10 is completed in the previous S524 to S528, the CPU 61 determines the user power consumption amount, EV10 The taxable power amount information is sent to the power billing server 33 (S529).
Then, it waits for a predetermined period of time to receive a user power consumption amount, EV10 taxable power amount information reception response from the power billing server 33 (S530, S531). If the user power consumption and EV10 taxable power consumption information reception response cannot be received even after waiting for a predetermined time (S531), timeout processing 17 is performed (S532).
Specifically, retransmission of user power consumption and EV10 taxable power consumption information is performed three times. If the user's power consumption and EV10 taxable power amount information reception response cannot be received even if the retransmission is performed three times, the CPU 61 in the smart meter 21 ends the retransmission processing, not shown, and the monitor control circuit 72 is turned on. Thus, information notifying that the power usage details could not be normally sent to the power billing server 33 is displayed on the monitor 22, and the electricity charge calculation flow is terminated.

When receiving the user power consumption and EV10 taxable power amount information reception response in S530, the CPU 61 extracts the power usage amount, EV billing information, etc. from the received packet, and matches the data transmitted by itself. Check. At this time, if the data match, the electricity charge calculation flow ends. On the other hand, if they do not match, the user's power consumption and EV10 taxable power information are sent again to the power billing server 33, and the user power consumption and EV10 taxable power information reception response from the power billing server 33 is sent. Wait for.
Then, when receiving the user power consumption amount and the EV10 taxable power amount information reception response, the contents are analyzed again to confirm whether or not it matches the information sent by itself. If they do not match, the user's power usage amount and the taxable power amount information of EV 10 are sent to the power billing server 33 again. If the user power consumption and EV10 taxable power amount information reception response cannot be received normally even after repeating this retransmission control three times, the CPU 61 indicates that the power usage details could not be sent normally to the power billing server 33. Notice. Specifically, the information is displayed on the monitor 22, and the electricity charge calculation flow is terminated.

Next, the operation of the power charge calculation process by the power billing server 33 will be described using the control flow of FIG.
When the calculation of the power charge is started, the CPU 81 in the power billing server 33 searches the database in the power usage management circuit 89 and collects information on the home smart meter 21 registered as a tax collection port. At that time, it is confirmed whether or not the selected smart meter 21 has already been authenticated (S561), and if it has not been authenticated, authentication with the smart meter 21 is performed (S562).

If authentication has already been completed in S561, or if the authentication is completed in S562, the CPU 81 transmits a user power consumption / EV taxable power transmission request to the smart meter 21 (S563). When the user power consumption / EV taxable power transmission request is sent, the CPU 81 receives the user power consumption / EV10 taxable power information output by the process of S529 of FIG. 20 from the smart meter 21. Until a predetermined time (S564, S565). If reception is not possible after waiting for a predetermined time (S565), timeout processing 18 is performed (S566).
Specifically, the user power consumption / EV taxable power transmission request is retransmitted to the smart meter 21. Then, if the retransmission is repeated three times and the information on the amount of power used by the user and the taxable power amount information of EV10 cannot be received, the fact is output to a monitor or printing device not shown, and the power charge calculation flow is terminated.

  If the user power consumption / taxed power amount information of EV10 can be received in the previous S564, the received packet is analyzed, the power usage amount, EV billing information, etc. are extracted, and the left information is used as the power usage amount management circuit 89, And stored in a database in the tax management circuit 90, respectively. When the storage of the power consumption, EV billing information, etc. in the database is completed, the CPU 81 creates a user power consumption / EV taxable power amount information reception response based on the received power consumption, EV billing information, etc. It transmits to the smart meter 21 (S567). When the transmission of the user power consumption / EV taxable power information reception response ends, the CPU 81 charges the user based on the received user power consumption, EV taxable power amount information, and the like, and taxation. A fee is calculated (S568).

  In this way, when the calculation of the power usage fee charged to the user and the taxation fee is completed, the CPU 81 calculates the charge from the power usage amount, the taxation details of the EV 10 (including information such as when, where, and how much charging). A description is created (S569). When the fee details are created, the CPU 81 in the power billing server 33 notifies the smart meter 21 of the fee details (S570). In the first embodiment, the case where the power charge details are sent via the network has been described. However, the present invention is not limited to this, and it goes without saying that it may be printed on paper and sent to the user.

  Next, with reference to FIG. 22, the management of the information of the smart meter 21 registered in the taxation management circuit 7 in the EV 10 and the information of the EV 10 managed in the charging / taxation management circuit 66 of the smart meter 21 are described. A management method will be described.

When the connection between the EV power supply I / F 8 and the in-home power supply I / F 23 is released, the CPU 41 in the EV 10 sets a predetermined value in a timer circuit (not shown) (S601). Similarly, the CPU 61 in the smart meter 21 sets a predetermined value in a timer circuit (not shown).
Whether or not the vehicle power supply I / F 8 and the home power supply I / F 23 are connected is determined by the CPU 61 in the smart meter 21 periodically sending a connection confirmation packet via the inter-EV communication circuit 70. The CPU 41 in the EV 10 that has received the packet for use via the communication circuit 6 transmits the response packet to the smart meter 21 and confirms it.

  The EV 10 does not receive the connection confirmation packet for a predetermined period (for example, a period of 5 times the transmission period of the connection confirmation packet), or the user starts the engine to use the EV 10. In this case (specifically, when an intention to move the car by turning the key is indicated), it is determined that the connection with the home power supply I / F 23 at home has been released. Similarly, the smart meter 21 determines that the connection with the home power supply I / F 23 is released when the response packet of the connection confirmation packet from the EV 10 cannot be received a plurality of times.

After this connection is released, the presence or absence of connection between the EV 10 and the home smart meter 21 registered as a tax collection port is confirmed (S602). Specifically, when the automobile power supply I / F 8 is connected to the home power supply I / F 23 registered as a tax collection port and the control sequence shown in FIG. 15 is completed between the EV 10 and the smart meter 21 (EV10 It is determined that the EV 10 and the home smart meter 21 are connected when it is confirmed that the tax-related information related to charging / discharging registered in the database in the tax management circuit 7 is sent to the smart meter 21). To do.
Thus, when the connection between the EV 10 and the smart meter 21 is confirmed, the CPU 41 in the EV 10 stops a timer circuit (not shown) and clears the count value. Similarly, the CPU 61 in the smart meter 21 stops a timer circuit (not shown) and clears the count value.

  On the other hand, if it is determined in S602 that the home smart meter 21 registered as the tax collection port with the EV 10 is not connected, the CPU 41 in the EV 10 receives an interrupt from a timer circuit (not shown). It is confirmed whether it is not input (S603). If the timer interrupt has not been input, the process returns to S602 to confirm the connection between the EV 10 and the smart meter 21 again.

  Similarly, the CPU 61 in the smart meter 21 confirms whether an interrupt from a timer circuit (not shown) is input in the previous S603. If the timer interrupt has not been input, the process returns to S602 to confirm the connection between the EV 10 and the smart meter 21 again. When the CPU 41 in the EV 10 detects an interrupt from a timer circuit (not shown) in S603, it deletes all the information of the smart meter 21 stored in the database in the taxation management circuit 7 (S604) and then stops the timer circuit. In step S605, the timer value is cleared and the process is stopped. Similarly, when the CPU 61 in the smart meter 21 detects an interrupt from a timer circuit (not shown) in S603, it deletes the EV10 information stored in the database in the accounting / taxation management circuit 66 (S604). The timer circuit is stopped (S605), the timer value is cleared, and the process is stopped.

By performing the control as described above, even if the EV 10 is connected to the smart meter 21 at home registered once as a tax collection port, the EV 10 is once connected to the smart meter 21 or charging station at the home. Without connecting, for example, it is possible to prevent unauthorized charging of a user who does not pay taxes by charging only at the home where he / she goes home or charging at a friend's house.
That is, for example, if the timer value set in S601 is set to a predetermined period (for example, one month), the EV 10 is not connected to the home smart meter 21 registered as a tax collection port for one month or more. In this case, the information about the smart meter 21 registered in the database (not shown) in the taxation management circuit 7 in the EV 10 is erased in the above-described S604. Since charging at home cannot be performed, it is possible to prevent unauthorized charging of the EV 10 owned by a user who does not pay tax and to prevent occurrence of problems such as inability to charge.

  As described above, in the first embodiment, since the configuration according to claim 1 is provided, the EV 10 having the large-capacity battery 1 that can be charged / discharged with respect to the outside of the vehicle is used, and at peak power or The power stored in the battery 1 is discharged during a time period when the power rate is high, so that the use of power at the peak power can be reduced or the power charged with inexpensive midnight power can be effectively used. In that case, when the electric power charged when charging the electric power to the battery 1 is used for the discharge to the electric equipment in the house 20 other than for moving the EV 10 and the system power supply 31, the amount of discharge is reliably managed. In addition, it is possible to reliably adjust the tax paid by the user based on the management result.

  Further, in the first embodiment, since the configuration described in claim 2 is provided, the user's own EV10 is located at a place other than the smart meter 21 where the user has previously registered his / her EV10 as a tax collection port, for example, at a friend's house. Even when the battery 1 is charged, it is possible to eliminate the tax imposed on the friend.

  Further, in the first embodiment, since the configuration according to claim 3 is provided, the charging power information charged in the battery 1 of the EV 10 is reliably managed through the communication circuit 6 to control the tax on the charge / discharge amount of the battery 1. The smart meter 21 can be notified. In addition, since the charge amount information is notified to the smart meter 21, the size of the database of the ROM 42 that manages and stores the charge power amount information can be reduced on the EV 10 side, and the cost can be reduced. Even when communication abnormality occurs, the amount of uncharged charge power can be notified again when connected to the smart meter 21 that can manage taxation next time.

  Further, in the first embodiment, since the configuration described in claim 4 is provided, for example, the charging power that has already been taxed can be distinguished by the taxation information flag, so that the user pays too much tax. There is no. Even if data is mixed in at the communication stage and the smart meter 21 cannot receive the charge amount information, the tax information flag is not cleared until a response packet indicating the completion of taxation is received. The tax can be charged with respect to the amount of electric power charged. If transmission of the charge amount notification fails, the retransmission is repeated, so that the tax can be charged reliably.

  Furthermore, in the first embodiment, since the configuration described in claim 5 is provided, the state of the taxation information flag is displayed when the charging of the battery 1 is completed or the notification of the charging amount to the smart meter 21 is completed. Therefore, the user can check the display state of the taxation information flag and check how much unpaid tax is on the monitor, which increases convenience.

  Furthermore, in this Embodiment 1, since it has the structure of Claim 6, when the response packet from the smart meter 21 is not received by EV10 side, the charge amount measured by the charge amount measurement circuit 2 is Since it is stored in the ROM 42, even if the charging gun is pulled out during charging, the previous charging amount, charging date and time, charging location, and taxation information flag can be stored. You can be surely charged taxes. In addition, if transmission of the charge amount notification fails, for example, it is transmitted again at the next connection, so that the tax can be reliably charged.

  Furthermore, in the first embodiment, since the configuration described in claim 7 is provided, the charge / discharge control circuit 4 of the EV 10 is connected to the ROM 42 when the EV 10 is connected to the smart meter 21 that can manage the taxation of the home 20. The smart meter 21 is notified of the uncharged charge amount stored in the charge amount stored in the home, so even when charging other than at home, such as at home, friends / acquaintances' homes, hotel parking lots, etc. It is possible to reliably charge the amount of charge.

  Furthermore, in this Embodiment 1, since the structure of Claim 8 is provided, when EV10 is connected to the smart meter 21 registered as a tax collection port, the charge / discharge control circuit 4 In addition to permitting discharge from the battery 1 in response to a discharge request from the smart meter 21, the discharge amount is measured by the discharge amount measuring circuit 3, so that the amount of discharge power discharged from the EV 10 can be reliably managed. , Users don't pay too much tax unnecessarily.

  Further, in the first embodiment, since the configuration described in claim 9 is provided, taxation processing is performed even when data is mixed in at the communication stage and the smart meter 21 cannot receive the discharge amount information. Since the taxation information flag is not cleared until a response packet indicating completion is received, the amount of discharge power discharged from the EV 10 can be managed reliably, and the user does not pay too much tax unnecessarily. If transmission of the discharge amount notification fails, retransmission is repeated, so that the discharge power amount can be reliably managed.

  Furthermore, in the first embodiment, since the configuration described in claim 10 is provided, the state of the taxation information flag is displayed on the monitor when the discharge from the battery 1 and the notification of the discharge amount to the smart meter 21 are completed. Since the user is informed by doing so, the user can check how much unadjusted tax is on the monitor, which increases convenience.

  Further, in the first embodiment, since the configuration described in claim 11 is provided, even when the response packet is not received from the smart meter 21 or when the charging gun is pulled out while the battery 1 is being discharged. Since the ROM 42 stores the discharge amount, discharge date and time, discharge location, and taxation information flag so far, the discharge electric energy discharged from the EV 10 can be managed reliably, and the user may pay too much tax unnecessarily. Disappear.

  Furthermore, in this embodiment, since the configuration according to claim 12 is provided, the charging / discharging control circuit 4 of the EV 10 is connected to the smart meter 21 in the house 20 where the EV 10 is registered as a tax collection port. Since the smart meter 21 is notified of the discharge amount for the non-refundable tax that is subject to tax reduction among the discharge amount stored in the ROM 42, the discharge power amount discharged from the EV 10 can be reliably managed, Tax cuts can be implemented according to the amount.

  Furthermore, in the first embodiment, since the configuration described in claim 13 is provided, the EV 10 is connected to the power management means that is allowed to charge the power storage means, even if it is other than the charging station that can be taxed. For example, it is possible to charge the power storage means and tax it later, so that the tax can be surely charged. For this reason, the user is not only at home but also at home, friend's house, inn, hotel, etc. You can widen your options for charging at home.

  Furthermore, in the first embodiment, since the configuration according to claim 14 is provided, after the charging of the battery 1 is completed, the smart meter 21 is other than the home smart meter in which the user has registered the EV 10 in advance as a tax collection port. In this case, since the charge amount to the battery 1 measured by the charge amount measurement circuit 2 is stored in the ROM 42, even if it is charged at a place other than home such as a home, a friend's house, an inn or a hotel, The amount of charge, the date and time of charging, and the charging location can be stored, so that it is possible to reliably charge a tax on the amount of charging power.

  Furthermore, in this Embodiment 1, since the structure of Claim 15 is provided, when EV10 is not connected within the preset time to the smart meter 21 of the home which the user has registered beforehand as a tax collection port Since all the information related to the smart meter 21 registered in the EV 10 is discarded, once the battery is connected to the smart meter 21 at home, the battery 1 is continuously charged at a charging place other than the home such as a home or a friend's house. In this case, the battery 1 cannot be charged after a predetermined period. Therefore, charging without paying taxes can be prevented, and taxes can be collected with certainty.

  Further, in the first embodiment, since the configuration according to claim 16 is provided, when the EV 10 is connected to the smart meter 21 at home registered in advance as a tax collection port by the user, it is stored in the ROM 42. Since the smart meter 21 is notified of the uncharged charge amount of the charged amount, it is possible to ensure that the tax applied at the time of charging is paid.

  Furthermore, in this Embodiment 1, since the structure of Claim 17 is provided, while the smart meter 21 can manage reliably with respect to the tax applied when charging / discharging to EV10, For example, even when a power company offers a user who has discharged from the EV 10 a discount on a power charge according to the amount of discharge based on the amount of discharge, the amount of charge, the amount of discharge, the amount of power used Are managed separately, so that it is possible to reliably discount the electricity charge according to the amount of discharge.

  Further, in the first embodiment, since the configuration described in claim 18 is provided, the smart meter 21 can collect information on taxation of the user having the EV 10, and the tax management by charging or discharging is ensured. Can be done.

  Furthermore, in the first embodiment, since the configuration according to claim 19 is provided, even if the smart meter 21 cannot receive information due to an error or the like during communication with the EV 10, Since it is possible to prompt the resending of the tax information stored in the EV 10, it is possible to reliably obtain and manage the tax information.

  Furthermore, in this Embodiment 1, since the structure of Claim 20 is provided, the smart meter 21 has the information which specifies EV10 registered with respect to the said smart meter 21, and the said registered with EV10 side. Only when the information specifying the EV 10 matches, the information related to the EV 10 is registered in the ROM 62 and the information is notified to the EV 10 side, so that the smart meter 21 at home is illegally registered in the EV 10 and accessed. Can be prevented, and the reliability of the system can be improved.

  Furthermore, in this Embodiment 1, since the structure of Claim 21 is provided, the smart meter 21 is only when the information regarding the smart meter 21 which can manage the taxation with respect to charge amount is registered in EV10, Since the power supply from the system power supply 31 to the EV 10 is executed, the smart meter 21 that can manage taxation on the charge amount is registered even in places other than the charging station, such as a home, a friend's house, or an inn / hotel. If it is a place, the battery 1 of the EV 10 can be charged from the smart meter 21, and options related to charging on the go can be expanded. Moreover, since EV10 in which the smart meter 21 which can perform a tax process is not registered cannot be charged other than the charging station which can perform a tax process, there exists an effect which can collect a tax reliably.

  Further, in the first embodiment, since the configuration described in claim 22 is provided, the smart meter 21 receives information on the charge amount to the tax-free EV 10 and the tax-uncleared EV 10 when the EV 10 is connected. Since the discharge amount information and the taxation information can be displayed on the monitor 22, the user can easily grasp the taxation amount for the EV 10 and the convenience is enhanced.

Explanation of modification.
In the first embodiment, the other party is determined by communication via a smart meter even when charging at a home or a friend's house. However, the present invention is not limited to this. You may connect to the power supply port which supplies power to the electrical decoration of. In that case, since communication with the smart meter 21 cannot be performed, the EV 10 determines that charging is performed outside the home, and registers the charge amount in a database in the taxation management circuit 7 in the charge / discharge control circuit 4. And when connected to the home smart meter 21, the home smart meter 21 is notified of information such as the amount of charge, the charging date and time, and the charging location, so that there is an effect that taxes can be collected with certainty.

  In the first embodiment, the tax management method has been described based on the control flow and control sequence shown in FIGS. 5 to 22. However, the control method is not limited to this control flow and control sequence. In the time-out process, etc., the retransmission has been described about three times, but the number of retransmissions is not limited to three. In the first embodiment, the taxation information flag in the EV 10 is cleared only when communication with the smart meter 21 is successful. Therefore, even if retransmission fails, data is exchanged again at the next connection, for example. There is an effect that taxation can be processed reliably. In the first embodiment, even when the same taxation information is sent from the EV 10, the smart meter 21 compares it with the previously sent taxation-related information stored in the charging / taxation management circuit 66. If the received information is already received, the information in the database is compared with the received information. If the received information is the same, the received information is discarded. On the other hand, it goes without saying that it may be controlled to send a retransmission request to EV 10 to retransmit if they do not match.

1 battery, 2 charge amount measurement circuit, 3 discharge amount measurement circuit, 4 charge / discharge control circuit,
5 authentication circuit, 6 communication circuit, 7 taxation management circuit, 8 automobile power supply I / F, 9 in-vehicle equipment, 10 electric vehicle, 20 in house, 21 smart meter, 22 monitor,
23 power supply I / F, 31 system power supply, 32 Internet, 33 power billing server, 41 CPU, 42 ROM, 43 RAM, 44 CPU bus,
45 charge tax calculation circuit, 46 discharge tax calculation circuit,
47 DC / DC converter control circuit, 48 DC / DC converter, 61 CPU,
62 ROM, 63 RAM, 64 CPU bus, 65 authentication circuit,
66 charging / taxing management circuit, 67 EV battery charge / discharge control management circuit,
68 AC / DC converter control circuit, 69 AC / DC converter,
70 EV communication circuit, 71 Internet communication circuit, 81 CPU, 82 ROM,
83 RAM, 84 CPU bus, 85 authentication circuit, 86 Internet communication circuit,
87 EV registration database, 88 customer registration database,
89 Electricity consumption management circuit, 90 Tax management circuit.

Claims (11)

In an electric vehicle having a large-capacity storage means that can be charged / discharged outside the vehicle,
Charge amount measuring means for measuring the charge amount to the power storage means;
A discharge amount measuring means for measuring a discharge amount from the power storage means;
Charge / discharge control means for controlling charge / discharge to the power storage means;
Charge / discharge amount storage means for storing a discharge amount and a charge amount for the power storage means measured by the charge amount measurement means and the discharge amount measurement means;
Connection means for connecting to a power supply system installed outside the vehicle;
Communication means for communicating with power management means installed outside the vehicle;
Authentication means for authenticating and communicating with the power management unit charge from outside to said storage means, or whether or not the implementation of discharge to the outside of the vehicle from said storage means is permitted through the communication means, the Informing means for informing the user of taxation information when charging the power storage means;
With
The charge / discharge control means is configured to manage taxation on the charge / discharge amount of the power storage means as a result of authentication by the authentication means when connected to the power management means via the connection means. Notifies the power management means via the communication means of the charge amount and discharge amount for the power storage means respectively measured by the charge amount measurement means and the discharge amount measurement means, while the power management means Control of storing the charge amount and discharge amount for the power storage means measured by the charge amount measurement means and the discharge amount measurement means respectively in the charge / discharge amount storage means when taxation on the charge / discharge amount of the means cannot be managed was carried out, also, the charge and discharge control means, while providing an instruction to start charging amount measurement by the charge amount measuring means at the start of charging to the power storage means, In response to completion of charging of the storage means, control is performed to notify the power management means that can manage the charge amount measured by the charge amount measurement means via the communication means to charge the charge / discharge amount of the storage means. The charge / discharge control means sets a taxation information flag indicating that the taxing process has not been completed at the start of charging the power storage means, while charging the power storage means and charging the power management means. When the response packet indicating the completion of taxation processing is received from the power management means after the notification of the amount is completed, the control for clearing the taxation information flag is performed, and the charge / discharge control means is further connected to the power storage means. upon completion of charging and the charging amount of the notification completion to said power management unit, and performs control to display the status of the tax information flag in the notification means, characterized in that Care automobile. The charge / discharge control means stores, in the charge / discharge amount storage means, the charge amount to the power storage means measured by the charge amount measurement means when the response packet is not received from the power management means. The electric vehicle according to claim 1 , wherein the electric vehicle is a vehicle. The charge / discharge control means is a power management capable of managing taxation on the charge / discharge amount of the power storage means as a result of authentication by the authentication means when connected to the power management means via the connection means. If a means is to notify the charging amount of the non-taxable amount of the charge amount stored in the charge and discharge amount storage means to said power management means, that according to claim 2, characterized in Electric car. The charge / discharge control means permits discharge from the power storage means in response to a discharge request from the power management means when connected to the power management means via the connection means, and the discharge amount measuring means. The charging / discharging control means sets a taxation information flag indicating that the taxing process is not completed at the start of discharging from the power storage means, When a response packet indicating completion of taxation processing is received from the power management means after completion of discharge from the power storage means and notification of discharge amount to the power management means, control is performed to clear the taxation information flag. The electric vehicle according to claim 1, wherein the electric vehicle is a vehicle. Informing means for informing the user of taxation information at the time of discharging to the electricity storage means, the charge / discharge control means is in the case of completion of discharge from the electricity storage means and notification of discharge amount to the power management means. 5. The electric vehicle according to claim 4 , wherein control for displaying the state of the taxation information flag on the notification means is performed. When the charge / discharge control means is connected to the power management means via the connection means, the discharge corresponding to the non-returned tax subject to tax reduction out of the discharge amount stored in the charge / discharge amount storage means The electric vehicle according to any one of claims 1 to 5, wherein the amount is notified to the power management means. In a power management apparatus for managing the amount of power supplied from a system power supply to an electric vehicle equipped with a chargeable / dischargeable large-capacity storage means and the amount of discharge power discharged from the electric vehicle to the system power supply ,
Connection means for connecting the system power supply and the electric vehicle;
A means for notifying the amount of power used to notify the power company of the amount of power used in the customer's house;
Supply power amount measuring means for measuring the supply power amount from the system power supply to the electric vehicle,
A communication means for communicating with the electric vehicle;
Authenticating means for authenticating, via the communication means, whether charging / discharging of the electric storage means of the electric vehicle is permitted by a user;
Electric energy management means for managing the electric energy charged and discharged between the system power supply and the electric vehicle;
Storage means for storing information on power consumption for performing tax management;
Have
As a result of authentication by the authenticating means when the in-home power supply and the electric vehicle are connected by the connecting means, the power amount managing means is allowed to charge / discharge the electric power storage means of the electric vehicle by the user. If there is a charge request to the electric vehicle or a discharge request from the electric vehicle, charging or discharging from the system power supply to the power storage unit is performed in response to a request for discharge from the electric vehicle, and measured by the power supply amount measuring unit Based on the amount of power supplied to the electric vehicle and the charge / discharge power information given from the electric vehicle, the amount of power used from the system power supply, the amount of charge to the electric vehicle, and the amount of discharge from the electric vehicle are classified. performs control to store in the storage means Te, also, the electric energy management unit, the charge amount information of the non-taxed the electric vehicle, and taxes Not liquidation The notification of the discharge amount information requesting, the information notified from the electric vehicle in response to the request and performs control to store in the storage means, the power management apparatus, characterized in that. In the case where the electric vehicle is informed of the tax-free charge amount information related to the electric vehicle and the discharge amount information not yet settled on tax, the electric energy management means sends the information to the electric vehicle accordingly. The power management apparatus according to claim 7 , wherein the power management apparatus performs control for notifying that it has been received. An input means for inputting information for specifying the electric vehicle, and when the electric vehicle is connected via the connection means, the authentication means includes information for specifying the electric vehicle input by the input means; While authenticating whether both information with the information which specifies the said electric vehicle registered into the said electric vehicle corresponds through the said communication means, the said electric energy management means is the said information by the said authentication means. When it is authenticated that they match, the information inputted by the input means is registered in the storage means, and control for notifying the information to the electric vehicle via the communication means is performed. The power management apparatus according to claim 7 , wherein the power management apparatus is provided. The power amount management means is a power amount management means capable of managing taxation on the charge amount in the electric vehicle in response to a charge request from the electric vehicle when the electric vehicle is connected via the connection means. information confirms whether the registered claims for the case where this information is only registered, and executes the power supply to the electric vehicle from the system power supply, from claim 7, characterized in that Item 10. The power management apparatus according to any one of Items 9 to 9 . In addition to display means for displaying various information, the power amount management means charges the tax-free electric vehicle stored in the storage means when the electric vehicle is connected via the connection means. 11. The control according to claim 7 , wherein control is performed to display the amount information, the discharge amount information from an unpaid tax electric vehicle, and taxation information on the display means. The power management device described in 1.

Images