KR20110048444A - Hierarchical Electric Vehicle Charging System for Efficient Charging - Google Patents

Abstract

PURPOSE: A hierarchical electric automobile charging system is provided to optimize the construction and extension of a power facility by reinforcing an integrated charging management unit. CONSTITUTION: One or more charging stands(100) are respectively installed at an individual parking section. The charging stand supplies power to an electric vehicle and transmits charging information by wire/wireless. An integrated charging management unit(200) performs an upper function and controls one or more charging stands. A charging operation unit(300) manages a charging service and provides various charging services.

Description

Hierarchical Electric Automobile Charging System for Efficient Charging Facility

The present invention relates to a hierarchical electric vehicle charging system for an efficient charging facility, and more particularly, to install charging stations in individual parking compartments, and to control each charging station by integrated charging management means, and to manage integrated charging service management of charging operation means. Instead of installing expensive charging stations in the charging area of buildings or apartments, it is installed in a hierarchical and distributed form to drastically reduce the cost of building a charging infrastructure. The present invention relates to a hierarchical electric vehicle charging system for an efficient charging facility that utilizes the power storage function to reduce the charging cost as well as optimize the capacity of a power facility including a UPS in a building and minimize the cost of the expansion.

Electric vehicles need to be charged for driving, which can be done through dedicated charging stations or charging equipment.

For slow charging, private homes can be plugged into a regular outlet in the garage. However, when a large number of electric vehicles are charged in public parking lots, power metering and communication network technologies are required for charging and authentication.

This is a smart metering technology, integrated management platform, power system, demand management and external power grid interworking through switchgear and distribution panel including middleware technology and uninterruptible power supply (UPS) system in parking area (V2G) and distributed power conversion technology are the main background technologies.

For fast charging, a separate fast charging technology is required, and a kiosk-type charging stand manufacturing technology considering the theft, damage, and hacking of the charging station is also required.Smart card interlocking technology and billing panel for convenient charging and authentication Screen providing technology is also required.

An object of the present invention for solving the above problems is to simplify the charging station in a hierarchical design and to manage it through the integrated charging management means, while efficiently charging facilities for operating a hierarchical charging equipment system in connection with the last higher charging operation means To provide a hierarchical electric vehicle charging system for.

Another object of the present invention is to enhance the function of the integrated charge management means to efficiently build and expand the power equipment according to the electric vehicle charging through interlocking with the power distribution and distribution facilities, including the UPS system in the building A hierarchical electric vehicle charging system for a facility is provided.

It is still another object of the present invention to provide a hierarchical electric vehicle charging system for an efficient charging facility that can provide various charging modes to provide a benefit for a charging service according to a user's selection.

The above object of the present invention is to provide a charging system for a hierarchical electric vehicle for an efficient charging facility in a building or apartment that will provide a charging service for the electric vehicle in conjunction with the electric power service operating system and the charging service operating system. At least one charging station installed at each of the at least one charging station for supplying power to the electric vehicle through a predetermined authentication, and metering the amount of power supplied to transmit charging information through wired / wireless communication; Integrated charging management means for performing a higher function that can not be performed in the charging station, and is installed in each floor or a predetermined area unit space for the convenience of the charger to integrally control one or more charging stations; And charging operation means for efficiently managing charging services through a network with the integrated charging management means and interlocking with a power system to provide various charging services. do.

According to the present invention, the charging station, the charging plug is connected to the charging port of the electric vehicle for supplying power; And a display module including a touch screen function for selecting and verifying at least one of a vehicle number input, payment authentication, and a charging service method for charging, and a smart metering board for performing a smart metering function. Characterized in that it comprises a.

According to the present invention, the smart metering board comprises a CPU (CPU) for performing a charging algorithm; A memory for storing basic programs for charging and charging information; Ammeter for measuring power; A relay for on / off control of the power supply; And a wired or wireless communication module for communicating with the integrated charge management means.

According to the present invention, the integrated charge management means is interlocked with the charging station via a wireless communication network consisting of a plurality of individual smart outlets and Zigbee (Mig) network-based, charging service algorithm performing module; User interface screen module; And confirmation means for charging and authentication.

According to the present invention, the means for checking and charging is characterized in that at least one of a smart card reader and a charge ticket reader.

According to the present invention, the upper function of the integrated charge management means is characterized in that it includes a credit card and cash payment for billing according to the charging, integrated settlement payment and charging mode selection function with the parking fee.

According to the present invention, the charging mode selection function may include at least one of a normal mode, a demand run mode, an uninterruptible power supply mode, and a distributed generation mode. It is characterized by one.

According to the present invention, the demand management mode is characterized in that when the real-time power rate increases if the charge is more than a predetermined set rate, the stop time does not exceed the maximum set time characterized in that the charging is performed.

According to the present invention, the uninterruptible power supply mode allows the electric vehicle battery to be automatically connected to the uninterruptible power supply battery pack in the event of a power failure to extend the battery duration, thereby charging a low charging fee as a compensation thereto. It features.

According to the present invention, in the distributed power mode, an electric vehicle in which only the electric vehicle battery that does not select the distributed power mode is switched in the charging network and the distributed mode is selected so that the entire building functions as a distributed power source by utilizing the battery vehicle battery. It characterized in that to use the capacity of the battery as a distributed power source.

According to the present invention, the integrated charge management means by using a PC (PC) or a mobile terminal based on the vehicle charge status information, billing information, real-time demand management program, event information, smart card point information Characterized in that it is possible to control the time of charge, stop, discharge by time.

According to the present invention as described above, it significantly lowers the production and installation costs, in particular can be directly applied to existing parking facilities without replacing equipment or securing a separate space, and also through the upper integrated interlocking system intelligently with the power system in the building By interlocking, it is possible to design more expensive and more efficient building capacity of buildings by supplementing UPS capacity and building electric vehicle charging stations.

In particular, by discovering a service that utilizes a battery as an electric power storage device when parking an electric vehicle, a driver may receive a charge rate discount, an exemption, or even an incentive.

 Therefore, the cost of securing the charging infrastructure is an additional cost incurred by the supply of electric vehicles, which greatly contributes to the construction and expansion of the charging infrastructure, which is an obstacle to the spread of electric vehicles. There is an effect that can greatly speed up.

The utility of the parking lot of the existing building is eliminated the need for a separate facility change or secure space, and its utility is very high. As a result, policy enforcement is very easy.

In addition, the battery of a parked electric vehicle can be used for a lower cost in normal mode, demand run mode, uninterruptible power supply mode, and distributed generation mode. There is an effect that can be performed efficiently.

1 is a block diagram of a hierarchical electric vehicle charging system according to a preferred embodiment of the present invention.
2 is a view showing the configuration of a charging station according to a preferred embodiment of the present invention.
3 is a block diagram showing the configuration of a smart module of the charging unit according to an embodiment of the present invention.
4 is a view showing a circuit configuration of a smart module of the charging unit according to an embodiment of the present invention.
5 is a view showing a user-associated screen of the charging mode selection function according to an embodiment of the present invention.

The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a hierarchical electric vehicle charging system according to a preferred embodiment of the present invention.

As shown in FIG. 1, a hierarchical electric vehicle for an efficient charging facility in a building or apartment that will provide a charging service of the electric vehicle 10 in conjunction with the power service operating system 500 and the charging service operating system 400. Charging system of each, is installed in each of the individual parking compartments to supply power to the electric vehicle 10 through a predetermined authentication, the charging table 100 for transmitting the charging information through wired and wireless communication by measuring the amount of power supplied and Integrated charging management means for performing a higher function that can not be performed in the charging station 100, and is installed in each floor or a predetermined area unit space in the form of a kiosk for the convenience of the charger to integrally control the charging station 100 ( 200) and through the network with the integrated charge management means 200 integrated management of the charging service and interlocked with the power system various charging It comprises a charging operating means 300 for providing a service.

The charging station 100 is managed by one integrated charging management means 200 for each parking area (basement 1 floor, basement 2 floors, etc.), and the plurality of integrated charging management means 200 may be configured as the upper charging operation means 300. ) And integrated management.

2 is a view showing the configuration of a charging station according to a preferred embodiment of the present invention, Figure 3 is a block diagram showing the configuration of a smart module unit of a charging station according to a preferred embodiment of the present invention, Figure 4 is a preferred embodiment of the present invention It is a figure which shows the circuit structure of the smart module part of a charging stand which concerns on an example.

The charging station 100 is connected to the charging port of the electric vehicle 10, the charging plug 110 for supplying power, and at least any one of the vehicle number input, payment authentication, charging service method for charging and selecting It consists of a display module 140 including a touch screen function for the smart module unit 130 including a smart metering board 150 for performing a smart metering function.

The smart metering board 150 includes a CPU 152 for performing a charging algorithm, a memory 154 for storing basic programs and charging information for charging, and an ammeter 156 for measuring power. And a relay 158 for controlling on / off of power supply and a wired / wireless communication module 160 for communication with the integrated charge management means 200.

In detail, the charging stand 100 is composed of an integrated smart module unit 130 made to enter a general outlet box, and a case cover of the front, and the charging plug 110 that can be plugged into the electric vehicle. .

In addition, the smart module unit 130 includes a smart metering board 150 capable of a smart metering function, and the smart metering board 150 includes an ammeter (CT) 156 for power measurement, and The wire / wireless communication module 160 includes a relay 158 for controlling on / off, a wireless module such as Zigbee for wireless communication, and a wired module such as RS485 if necessary.

In addition, the sipe oil 152 and the memory 154 is embedded in the smart metering board 150 to perform this function.

The charging station 100 is installed in each parking compartment of the electric vehicle in the parking lot, and an integrated charging management means 200 interlocked with each charging station 100 is installed in a Zigbee mesh network in this space.

The integrated charging management means 200 is made in the form of an unmanned kiosk and is installed at the entrance of the unmanned parking fee checker or unmanned courier management system at the entrance to the building or apartment building in the parking lot or integratedly installed in the unmanned parking fee checker or unmanned courier system. It is desirable to be able to.

In the case of street parking, it is made of a PDA-type terminal, and in the case of street parking, a parking agent can be carried so as to be integrated with the parking fee.

In parking lots such as public buildings, department stores, restaurants, and hospitals, it is desirable to install an unmanned kiosk at a place where parking is checked or to have management personnel operate the PD.

Electric power enters the parking facility from the power service provider network through the power plant (1), power transmission station (2), substation (3), and distribution network (4).

In the parking facility is reduced to the voltage in the facility in the switchgear 20 is provided to each terminal charging station 100 through each smart distribution panel (30).

 When interlocked with the UPS distribution board, the EV battery connected to the plug in case of power failure is automatically connected to the UPS battery and can be used without an inverter. In addition, if the inverter function in the smart distribution board 30 can be utilized as a distributed power supply.

The highest level charging operation means 300 is always available in additional service functions, such as demand management services in the form of V2G in connection with the grid network server.

The integrated charge management means 200 is linked with the charging station 100 through a wireless communication network consisting of a plurality of individual smart outlets and Zigbee (Mesh) network-based, charging service algorithm performing module (not shown) and User linked screen module (not shown) and a check means for charging and authentication (not shown).

The checking means may include a smart card reader (not shown) and a charging ticket reader (not shown).

5 is a view showing a user-associated screen of the charging mode selection function according to an embodiment of the present invention.

As illustrated in FIG. 5, all drivers may be provided with services related to parking and charging of the electric vehicle 10 through a user connection screen of the integrated charging management means 200.

The driver enters a parking facility, parks in a parking space where charging parking is possible, and then pulls out the charging plug 110 from the charging station 100. Then, a simple authentication or service selection is performed such as a vehicle number input on a charging station display screen (not shown), and when necessary, the vehicle receives a charging ticket, goes to the entrance of the building elevator, and goes to the integrated charge management means 200 installed there, and charges through the user connection screen. To start.

That is, when the charging station authentication number input or ticket is put on the screen, the relay 158 of the charging station 100 is connected, and at this time, the battery load state of the electric vehicle 10 is shown as electricity flows.

After checking the charging time and cost, and entering a parking ticket number or a smart card or a tenant's password, authentication and billing are possible.

When charging ends, the relay 158 automatically opens to stop the power supply.

On the other hand, if the first demand run mode (Demand Run Mode) to reduce the cost, the charge will be stopped when the electricity rate is high according to the electricity rate, the total charge time is longer, but the charge amount is lowered.

If you press the Uninterruptible Power Supply Mode, the building allows the battery of the electric vehicle to be used for the UPS in case of power failure. While there is little impact, by providing these features to the building owner, the building owner can reduce the UPS design capacity and lower the charging cost in return.

In addition, the distributed generation mode more actively installs inverters at each outlet or distribution panel branch to actively manage demand for UPS functions or electricity rates during power outages, saving more charging costs and further Get parking fee compensation and incentives.

In the demand run mode (Demand Run Mode), when the demand management program is interlocked with the demand management program from the grid operator in real time to receive the real-time electricity rate information and send it to the integrated charge management means 200 based on this charge performance Do it.

For example, if it is based on Real Time Pricing (RTP), it stops charging when the rate exceeds a certain value and recharges when it falls again.

In this case, the maximum stop time may be set in consideration of the delay time due to the charging stop. This is performed according to the method set by the driver in units of the respective charging stations 100.

In uninterruptible power supply mode, if a power failure occurs in a building, the UPS battery backup power will be activated immediately in the UPS distribution box or distribution board.

At this time, since the external power is cut off, charging is stopped. It is used to increase the UPS power supply capacity by connecting the electric vehicle 10 battery currently connected in the UPS distribution board to the UPS battery as it is.

In this case, there is no need to install any additional device in the smart outlet part, and only the external battery interlock device is installed in the UPS distribution panel, thereby reducing the cost of reducing the capacity of the UPS power supply, thereby compensating the driver.

From the driver's point of view, most of the time there will be no power outage, so you will be able to save on charging costs without actually experiencing any inconvenience.

In the distributed power mode, a more aggressive method is to collect only the vehicle battery of the selected driver and use it as one distributed power source. In other words, if distributed power is required for the power operation of the entire building, the car that does not select the distributed garden mode is cut off from the smart outlet and the battery of the car selected the distributed power mode is collected and the inverter is connected to the upper distribution board or switchboard connected to it. By attaching the device, it can produce the desired AC power for internal use or external transmission.

In this case, the driver can reduce or exempt charging costs and even incentive compensation.

In the building, the charging station 100 is divided into fast charging stations and low speed charging stations, and three-phase 380V (or 480V) power is used for the fast charging station, and single-phase 220V (or 120V for the Americas) is used for the low-speed charging station. Use to sort by distribution panel.

At this time, it is necessary to calculate the power equipment capacity of the distribution panel according to the number of installation for each of the fast charging station and the low speed charging station.

That is, when the number of charging stations 100 is N (units), the average charging time is T (hours), and the charging capacity is E (kW), the state of the charging station is 1.charging, 2.charging completed, 3.charging In the three states of the atmosphere, if the probability that the charging station is in each state is P1, P2, and P3, the optimum charging capacity is N x P1 x E (kW).

Here, P1 can be obtained from the Markovian Transient Model and the Erlang coefficient. This can also be used to find the optimal number of charging stations at a given distribution panel capacity.

In addition, in the number of installed charging stations, the available battery capacity through UPS interlock when the building has a power outage is N x P2 x E x T x Pups [kWh] (where Pups is the probability that the driver has chosen UPS mode) The available capacity is N x P2 x E x Pdg [kW], where Pdg is the probability that the driver has chosen DG mode.

As described above, the charging stand 100 is installed in each parking compartment and the integrated charging management means 200 controls each charging stand 100, and the like in the building or apartment through the integrated charging service management of the charging operation means 300. Instead of installing expensive charging stations in the charging area of the building, it is installed in a hierarchical and distributed form to dramatically reduce the cost of building the charging infrastructure. In addition to reducing charging costs, it also has the effect of optimizing power plant capacity, including building UPS, and minimizing the cost of expansion.

Although the above has been illustrated and described with reference to the preferred embodiments of the present invention, the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains without departing from the spirit of the present invention. Various modifications and variations are possible without departing from the spirit of the present invention and equivalents of the claims to be described below.

1: power plant 2: power station
3: substation 4: switchboard
10: electric vehicle 20: switchboard
30: smart distribution board 50: power line
60: local network network 70: common network network
100: charging station 110: charging plug
130: smart module unit 140: display module
150: smart metering board 152: CPU
154: memory 156: ammeter (CT)
158: relay 160: wired and wireless communication module
200: integrated charging management means 300: charging operation means
400: charging service operating system 500: power service operating system

Claims (11)

A charging system of a hierarchical electric vehicle for an efficient charging facility in a building or apartment that will provide a charging service of an electric vehicle in conjunction with a power service operating system and a charging service operating system,
One or more charging stations respectively installed in individual parking compartments to supply electric power to the electric vehicle through predetermined authentication, and to measure the amount of electric power supplied to transmit charging information through wired / wireless communication;
Integrated charging management means for performing a higher function that can not be performed in the charging station, and is installed in each floor or a predetermined area unit space for the convenience of the charger to integrally control one or more charging stations; And
Charging system of a hierarchical electric vehicle for an efficient charging facility comprising a charging operation means for integrated management of the charging service through a network with the integrated charging management means and interlocked with the power system to provide various charging services. . The method of claim 1,
The charging stand,
A charging plug connected with a charging port of the electric vehicle to supply electric power; And
It includes a display module including a touch screen function for selecting and verifying at least one of vehicle number input, payment authentication, and charging service method for charging, and a smart module unit including a smart metering board for performing a smart metering function. Hierarchical electric vehicle charging system for an efficient charging facility, characterized in that configured to.
According to claim 2,
The smart metering board
CPU (CPU) for performing a filling algorithm;
A memory for storing basic programs for charging and charging information;
Ammeter for measuring power;
A relay for on / off control of the power supply; And
Hierarchical electric vehicle charging system for an efficient charging facility, characterized in that it comprises a wired and wireless communication module for communication with the integrated charge management means. The method of claim 1,
The integrated charge management means is interlocked with the charging station through a wireless communication network consisting of a number of individual smart outlets and Zigbee (Mesh) network-based,
A charging service algorithm performing module;
User interface screen module; And
A hierarchical electric vehicle charging system for an efficient charging installation, comprising means for checking and charging. The method of claim 4, wherein
The checking means for the charging and authentication is a hierarchical electric vehicle charging system for an efficient charging facility, characterized in that at least one of a smart card reader and a charge ticket reader. The method of claim 1,
The upper function of the integrated charge management means is a hierarchical electric vehicle for an efficient charging facility, characterized in that it includes credit card and cash payment for charging according to charging, integrated settlement payment and charging mode selection function with parking fee Charging system. The method of claim 6,
The charging mode selection function is a hierarchical electric vehicle charging system for an efficient charging facility, characterized in that at least one of the normal mode, demand management mode, uninterruptible power supply mode, and distributed power supply mode. The method of claim 7, wherein
The demand management mode is a hierarchical electric vehicle for an efficient charging facility, characterized in that when the real-time power rate increases, the charge is stopped if the charge rate is higher than a certain set rate, and the charge is performed at a time that the interruption time does not exceed the maximum set time. Charging system. The method of claim 7, wherein
The uninterruptible power supply mode allows an electric vehicle battery to be automatically connected to the uninterruptible power supply battery pack in the event of a power failure to extend the battery duration, thereby charging a low charging fee as a compensation for this. Hierarchical electric vehicle charging system for installation. The method of claim 7, wherein
In the distributed power mode, the entire building utilizes a battery car battery to serve as a distributed power source. Only the electric vehicle battery that does not select the distributed power mode is transferred from the charging network and the capacity of the battery of the electric vehicle that selects the distributed mode is selected. Hierarchical electric vehicle charging system for efficient charging equipment, characterized in that to use as a distributed power source. The method of claim 1,
The integrated charge management means uses the PC (PC) or a portable terminal to charge, stop, discharge by combining their vehicle charging status information, billing information, real-time demand management program, event information, smart card point information, etc. Hierarchical electric vehicle charging system for an efficient charging facility, characterized in that to enable time-specific control of.

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