CN113459973A - Electric automobile network system, control method and vehicle - Google Patents
Electric automobile network system, control method and vehicle Download PDFInfo
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- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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Abstract
The embodiment of the application provides an electric automobile network system, a control method and a vehicle, wherein the electric automobile network system comprises a data acquisition terminal, a plurality of electronic control units, a gateway, at least two data channels and an auxiliary data channel; the plurality of electronic control units comprise a first group of electronic control units and a second group of electronic control units; the at least two paths of data channels transmit the data of the electronic control units to the data acquisition terminal through the gateway; the at least two data channels comprise a power assembly data channel, and the power assembly data channel is connected with the first group of electronic control units and is used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel. The electric automobile network system, the control method and the vehicle provided by the embodiment of the application can reduce the power consumption of the electric automobile under the charging working condition.
Description
Technical Field
The application relates to the technical field of electric automobiles, in particular to an electric automobile network system, a control method and a vehicle.
Background
The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels to run by using a motor, and meets various requirements of road traffic and safety regulations. At present, under the charging working condition of an electric automobile, a network system of the whole automobile needs to upload data, and the whole network system is awakened, so that the power consumption under the charging working condition is high.
Disclosure of Invention
In view of the above problems, embodiments of the present application provide an electric vehicle network system, a control method, and a vehicle, which can reduce power consumption of an electric vehicle under a charging condition.
The embodiment of the application is realized by adopting the following technical scheme:
in a first aspect, some embodiments of the present application provide an electric vehicle network system, including a data acquisition terminal, a plurality of electronic control units, a gateway, at least two data channels, and an auxiliary data channel; the plurality of electronic control units comprise a first group of electronic control units and a second group of electronic control units; the at least two paths of data channels transmit the data of the electronic control units to the data acquisition terminal through the gateway; the at least two data channels comprise a power assembly data channel, and the power assembly data channel is connected with the first group of electronic control units and is used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel.
In some embodiments, the first set of electronic control units includes a vehicle control unit, a battery management system, a dc conversion module, an on-board charger, and an intelligent power control unit; and the power assembly data channel is connected with the vehicle control unit, the battery management system, the direct current conversion module, the vehicle-mounted charger and the intelligent power control unit.
In some embodiments, the at least two data channels and the auxiliary data channel are controller area network data channels.
In a second aspect, some embodiments of the present application further provide a control method applied to the network system of an electric vehicle in any one of the above embodiments, where the method includes responding to a charging command and sending a sleep command to the second group of electronic control units and the gateway, so that the second group of electronic control units and the gateway enter a sleep state; and transmitting the charging data of the first group of electronic control units to a data acquisition terminal through a power assembly data channel and an auxiliary data channel.
In some embodiments, the charging instructions include a first charging instruction and a second charging instruction, wherein the charging power indicated by the first charging instruction is less than the charging power indicated by the second charging instruction.
In some embodiments, the first set of electronic control units includes a vehicle control unit, a battery management system, a dc conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the vehicle control unit, the battery management system, the direct current conversion module, the vehicle-mounted charger and the intelligent power control unit; responding to the charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state, wherein the sleep instruction comprises the following steps: responding to the first charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state; transmit the charging data of first group electronic control unit to data acquisition terminal through power assembly data channel and supplementary data channel, include: sending a sleep instruction to the intelligent power control unit to enable the intelligent power control unit to enter a sleep state; and keeping the vehicle control unit, the battery management system, the direct current conversion module and the vehicle-mounted charger in working states, and transmitting charging data of the vehicle control unit, the battery management system, the direct current conversion module and the vehicle-mounted charger to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
In some embodiments, the first set of electronic control units includes a vehicle control unit, a battery management system, a dc conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the vehicle control unit, the battery management system, the direct current conversion module, the vehicle-mounted charger and the intelligent power control unit; responding to the charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state, wherein the sleep instruction comprises the following steps: responding to the second charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state; transmit the charging data of first group electronic control unit to data acquisition terminal through power assembly data channel and supplementary data channel, include: sending a sleep instruction to the vehicle-mounted charger and the intelligent power control unit so as to enable the vehicle-mounted charger and the intelligent power control unit to enter a sleep state; and keeping the vehicle control unit, the battery management system and the direct current conversion module in working states, and transmitting charging data of the vehicle control unit, the battery management system and the direct current conversion module to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
In some embodiments, the method further comprises sending a sleep command to all electronic control units and the gateway to cause all electronic control units and the gateway to enter a sleep state when the vehicle is detected to be in an uncharged locked state.
In some embodiments, after the charging data of the first group of electronic control units is transmitted to the data acquisition terminal through the powertrain data channel and the auxiliary data channel, the method further includes responding to a wake-up signal and sending a wake-up instruction to the electronic control units in the sleep state to convert the electronic control units in the sleep state into the wake-up state, where the wake-up signal includes a vehicle unlock signal.
In a third aspect, some embodiments of the present application further provide a vehicle, including a vehicle body and an electric vehicle network system provided in the vehicle body.
The electric automobile network system comprises a data acquisition terminal, a plurality of electronic control units, a gateway, at least two data channels and an auxiliary data channel; the plurality of electronic control units comprise a first group of electronic control units and a second group of electronic control units; the at least two paths of data channels transmit the data of the electronic control units to the data acquisition terminal through the gateway; the at least two data channels comprise a power assembly data channel, and the power assembly data channel is connected with the first group of electronic control units and is used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel. The application provides an electric automobile network system can directly transmit the charging data of a first group of electronic control units to a data acquisition terminal through a power assembly data channel and an auxiliary data channel, and then need not to awaken a gateway and a second group of electronic control units, thereby reducing the power consumption of an electric automobile under the charging working condition.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic diagram of an electric vehicle network system provided in an embodiment of the present application.
Fig. 2 shows a flowchart of a control method provided in an embodiment of the present application.
Fig. 3 shows a schematic flowchart of another control method provided in the embodiment of the present application.
Fig. 4 is a flowchart illustrating another control method provided in the embodiment of the present application.
Fig. 5 shows a schematic structural diagram of a vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Noun interpretation
T-BOX (telematics BOX): the vehicle-mounted T-BOX is called as vehicle-mounted T-BOX for short, the T-BOX acquires data through a CAN network and stores the acquired real-time data in an internal storage medium.
CAN (Controller Area Network) bus: the CAN belongs to the field bus category and is a serial communication network which effectively supports distributed control or real-time control.
CAN (Controller Area Network) gateway: the CAN bus is the core of the whole CAN network and controls the forwarding and processing of various signals of the whole CAN bus.
ECU (Electronic Control Unit): is a microcomputer controller special for automobiles, and an ECU is generally responsible for one or more intelligent hardware devices.
The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels to run by using a motor, and meets various requirements of road traffic and safety regulations. At present, under the charging working condition of an electric automobile, a network system of the whole automobile needs to upload data, and the whole network system is awakened, so that the power consumption under the charging working condition is high.
Through long-term research and experiments, the inventor provides an electric vehicle network system in the embodiment of the application, which comprises a data acquisition terminal, a plurality of electronic control units, a gateway, at least two data channels and an auxiliary data channel; the plurality of electronic control units comprise a first group of electronic control units and a second group of electronic control units; the at least two paths of data channels transmit the data of the electronic control units to the data acquisition terminal through the gateway; the at least two data channels comprise a power assembly data channel, and the power assembly data channel is connected with the first group of electronic control units and is used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel.
As shown in fig. 1, fig. 1 shows a schematic diagram of an electric vehicle network system 100 provided in an embodiment of the present application. The electric vehicle network system 100 includes a data acquisition terminal 110, a plurality of electronic control units 120, a gateway 130, at least two data channels, and an auxiliary data channel. The data acquisition terminal 110 is a T-box (telecommunications box), the gateway 130 is a CAN (Controller Area Network) gateway 130, and the electronic Control unit is an ecu (electronic Control unit). The at least two data channels transmit data of the plurality of electronic control units 120 to the data acquisition terminal 110 through the gateway 130. Specifically, the electronic control units 120 transmit data to the gateway 130 through the data channel, and the gateway 130 forwards the data to the data acquisition terminal 110. In the present embodiment, the data of the plurality of ecu 120 may include, but is not limited to, powertrain data, body control data, and driving assistance data.
The plurality of electronic control units 120 includes a first group of electronic control units 121 and a second group of electronic control units 122. The at least two data channels at least include a power assembly data channel, the power assembly data channel is connected to a first group of electronic control units 121 of the plurality of electronic control units 120, and the other data channels except the power assembly data channel of the at least two data channels are connected to a second group of electronic control units 122 of the plurality of electronic control units. The first group of electronic control units 121 can transmit data to the gateway 130 through the power assembly data channel, and the gateway 130 forwards the data of the first group of electronic control units 121 to the data acquisition terminal 110. The second group of electronic control units 122 can transmit data to the gateway 130 through other data channels except the powertrain data channel in the at least two data channels, and the gateway 130 forwards the data of the second group of electronic control units 122 to the data acquisition terminal 110.
The auxiliary data channel is connected to the data acquisition terminal 110 and the powertrain data channel, and the powertrain data channel can directly transmit the charging data of the first set of ecu 121 to the data acquisition terminal 110 through the auxiliary data channel. Specifically, under the charging condition, the first group of ecu 121 can directly transmit the charging data to the data acquisition terminal 110 through the powertrain data channel and the auxiliary data channel without forwarding through the gateway 130.
In a conventional network system architecture of an electric vehicle, data of all the electronic control units 120 are forwarded to the data acquisition terminal 110 through the gateway 130, under a charging condition, the electronic control units 120 irrelevant to charging are awakened, and simultaneously, the gateway 130 and all data channels are required to be awakened to prepare for data transmission, thereby causing higher power consumption under the charging condition. Compared with the traditional electric vehicle network system architecture, the electric vehicle network system 100 in the embodiment of the application directly transmits the charging data of the first group of electronic control units 121 to the data acquisition terminal 110 through the auxiliary data channel and the power assembly data channel under the charging working condition without passing through the gateway 130, so that the gateway 130 and the second group of electronic control units 122 can be completely put into sleep under the charging working condition, and only the first group of electronic control units 121 for maintaining the charging working condition need to be awakened, so that the power consumption of the electric vehicle under the charging working condition is greatly reduced.
In this embodiment, the at least two data channels may further include a vehicle body control data channel and an auxiliary driving data channel. The body control data channel can transmit the body control data in the second group of electronic control units 122 to the gateway 130, and the gateway 130 forwards the body control data to the data acquisition terminal 110; the assistant driving data channel can transmit the assistant driving data in the second group of electronic control units 122 to the gateway 130, and the gateway 130 forwards the assistant driving data to the data collecting terminal 110. Further, the at least two data channels and the auxiliary data channel are controller area network data channels, wherein the power assembly data channel is a power assembly CAN bus, the vehicle body control data channel is a vehicle body control CAN bus, the auxiliary driving data channel is an auxiliary driving CAN bus, and the auxiliary data channel is a CAN line.
In this embodiment, the first set of electronic Control units 121 may include a Vehicle Control Unit (VCU) 1211, a Battery Management System (Battery Management System, BMS1212, a direct current conversion Module (DC-to-DC converter, DCDC)1213, an On-Board Charger (OBC) 1214 and an Intelligent Power Control Unit (IPU) 1215, the VCU1211, BMS1212, the DCDC Module 1213, the OBC1214 and the IPU1215 are connected to the powertrain CAN bus, and may transmit data to the gateway 130 through the powertrain data CAN bus and then forward the data to the data collection terminal 110 through the gateway 130, and the auxiliary data channel and the powertrain data CAN bus may transmit charging data of the first set of electronic Control units 121 directly to the data collection terminal 110 without being forwarded through the gateway 130 in the charging condition, the second set of electronic Control units 122 may include an Ignition Control Module (Ignition Control, ICM), keyless Entry and Start System (PEPS), Body Control Module (BCM), Power Assist System (PAS), and Blind Spot Detection System (BSD). The ICM, the PEPS and the BCM are connected with a vehicle body control CAN bus, and send vehicle body control data to the gateway 130 through the vehicle body control CAN bus, and then forward the vehicle body control data to the data acquisition terminal 110 through the gateway 130; the PAS and the BSD are connected to the assistant driving CAN bus, and transmit the assistant driving data to the gateway 130 through the assistant driving CAN bus, and then forward the assistant driving data to the data collecting terminal 110 through the gateway 130.
The electric automobile network system provided by the embodiment of the application comprises a data acquisition terminal, a plurality of electronic control units, a gateway, at least two data channels and an auxiliary data channel; the plurality of electronic control units comprise a first group of electronic control units and a second group of electronic control units; the at least two paths of data channels transmit the data of the electronic control units to the data acquisition terminal through the gateway; the at least two data channels comprise a power assembly data channel, and the power assembly data channel is connected with the first group of electronic control units and is used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel.
As shown in fig. 2, an embodiment of the present application further provides a control method 200, which can be applied to the electric vehicle network system 100. In the embodiment of the present application, the control method 200 may include the following steps S210 to S220.
Step S210: and responding to the charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state.
In this embodiment, when detecting that the rifle that charges is connected with electric automobile, can receive the instruction of charging to make electric automobile get into the operating mode of charging in response to the instruction of charging. Optionally, when it is detected that the wireless charging module is triggered, a charging instruction may also be received and the electric vehicle may be caused to enter a charging condition. Optionally, when it is detected that the charging gun is connected to the electric vehicle or the wireless charging module is triggered, a charging instruction triggered by a user may be received, and the electric vehicle enters a charging condition in response to the charging instruction, for example, the user issues a voice charging instruction or a touch screen charging instruction through the central control screen.
The charging instruction may be a first charging instruction or a second charging instruction, wherein the charging power indicated by the first charging instruction is smaller than the charging power indicated by the second charging instruction. In this embodiment, the first charging command may be a slow charging command, and the second charging command may be a fast charging command. When the connection between the charging gun and a slow charging interface of the electric automobile is detected, a slow charging instruction can be received, and the electric automobile is enabled to enter a slow charging working condition in response to the slow charging instruction; when detecting that the charging gun is connected with the quick charging interface of the electric automobile, the quick charging instruction can be received, and the electric automobile is enabled to enter the quick charging working condition in response to the quick charging instruction.
Further, under the charging condition, the sleep command is sent to the second group of electronic control units and the gateway, that is, the sleep command is sent to all the other electronic control units and gateways except the first group of electronic control units in the network system. Specifically, the gateway forwards the sleep command to the second group of electronic control units, so that the second group of electronic control units and the gateway enter a sleep state. For example, the gateway forwards the dormancy to the ICM, PEPS, BCM, PAS, BSD, etc., so that the electronic control units such as ICM, PEPS, BCM, PAS, BSD, etc. enter the dormant state, and the gateway also enters the dormant state.
Step S220: and the charging data of the first group of electronic control units are transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
In this embodiment, under the working condition of charging, the charging data of the first group of electronic control units is directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
Because the auxiliary data channel is arranged between the data acquisition terminal and the power assembly data channel, the charging data of the first group of electronic control units can be directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel under the charging working condition without being transmitted to the data acquisition terminal through the gateway, so that the data acquisition terminal can still normally receive the charging data of the first group of electronic control units after the gateway enters the dormant state. In this embodiment, because the first group of electronic control units connected with the powertrain data channel maintains the charging state of the electric vehicle, only the first group of electronic control units need to be awakened to be in the working state under the charging condition, and the power consumption of the electric vehicle under the charging condition can be greatly reduced after the second group of electronic control units and the gateway enter the sleep state.
The control method provided by the embodiment of the application is applied to the electric vehicle network system, responds to the charging instruction, and sends the dormancy instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter the dormancy state; and the charging data of the first group of electronic control units are transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel, so that the power consumption can be greatly reduced under the condition that the electric automobile normally transmits the charging data of the first electronic control units under the charging working condition.
As shown in fig. 3, the embodiment of the present application further provides another control method 300, which can be also applied to the electric vehicle network system 100 described above. In the embodiment of the present application, the control method 300 may include the following steps S310 to S340.
Step S310: and responding to the first charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state.
In this embodiment, the first charging command is a slow charging command. When the VCU detects that the charging gun is connected with the slow charging interface, the VCU receives a slow charging instruction and controls the electric automobile to enter a slow charging working condition. Optionally, when the VCU detects that the wireless charging module is triggered, the VCU may also receive a slow charging instruction and control the electric vehicle to enter a slow charging condition. Optionally, when the VCU detects that the charging gun is connected to the electric vehicle or detects that the wireless charging module is triggered, a slow charging instruction triggered by a user may be received, and the electric vehicle enters a slow charging condition in response to the slow charging instruction, for example, the user issues a voice slow charging instruction or a touch screen slow charging instruction through the central control screen.
Further, under the slow charging condition, the VCU may send the sleep command to the second group of electronic control units and the gateway, that is, send the sleep command to all the electronic control units and the gateways in the network system except the first group of electronic control units. Specifically, the VCU may send a sleep command to the gateway through the powertrain data channel, and the gateway forwards the sleep command to the electronic control units such as the ICM, the PEPS, and the BCM through the body control data channel, so that the electronic control units such as the ICM, the PEPS, and the BCM enter a sleep state, and the gateway may also forward the sleep command to the electronic control units such as the PAS and the BSD through the driving assistance data channel, so that the electronic control units such as the PAS and the BSD enter the sleep state. And meanwhile, the gateway also enters a sleep state according to the sleep instruction.
Under the working condition of charging slowly, the first group of electronic control units connected with the power assembly data channel maintains the charging state of the electric automobile, so that after the second group of electronic control units and the gateway are both in the dormant state, the power consumption of the electric automobile under the working condition of charging slowly can be greatly reduced.
Step S320: and sending a sleep command to the motor controller to enable the motor controller to enter a sleep state.
In this embodiment, under the slow charging condition, the VCU further sends a sleep command to the IPU through the power assembly data channel, so that the IPU enters a sleep state. Further, under the slow charging condition, the VCU, the BMS, the DCDC module and the OBC in the first group of electronic control units are only needed to maintain the slow charging state of the battery car. Specifically, when the rifle charges with fill the interface connection slowly with charging the rifle output alternating current, OBC will charge the alternating current of rifle output and convert the direct current into the direct current, and this direct current is converted into the battery package through the DCDC module and charges, and BMS and VCU manage and control the charging of battery package simultaneously. Therefore, under the working condition of slow charging, the charging data of the first group of electronic control units is provided by the OBC, the DCDC module, the VCU and the BMS, and after the VCU sends a sleep command to the IPU through the power assembly data channel to enable the IPU to enter a sleep state, all the electronic control units except the VCU, the BMS, the DCDC module and the OBC in the network system are all made to enter the sleep state, so that the power consumption of the electric automobile under the working condition of slow charging is further reduced.
Step S330: and the vehicle control unit, the battery management system, the direct current conversion module and the vehicle-mounted charger are kept in working states, and charging data of the vehicle control unit, the battery management system, the direct current conversion module and the vehicle-mounted charger are transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
In this embodiment, under the slow charging operating mode, keep VCU, BMS, DCDC module and OBC to awaken and be in operating condition to maintain the slow charging state of electric automobile. And the charging data of the VCU, the BMS, the DCDC module and the OBC under the slow charging working condition is directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
Because the auxiliary data channel is arranged between the data acquisition terminal and the power assembly data channel, the charging data of the VCU, the BMS, the DCDC module and the OBC can be directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel under the slow charging working condition without transmitting the charging data to the data acquisition terminal through the gateway, so that the data acquisition terminal can still normally receive the charging data of the first group of electronic control units after the gateway enters the dormant state.
This embodiment is through all other electronic control units and gateways except VCU, BMS, DCDC module and OBC entering dormancy state under the operating mode of charging slowly, and only awaken VCU, BMS, DCDC module and OBC and maintain the state of charging slowly, and the rethread power assembly data channel directly will awaken VCU, BMS, DCDC module and OBC's charging data transmission to data acquisition terminal with supplementary data channel, thereby greatly reduce the power consumption of electric automobile under the operating mode of charging slowly charging under making data acquisition terminal can normally receive charging data.
In a specific implementation scenario, the gateway, the high-voltage system and the constant-power module of the conventional electric vehicle network system need to work under the slow charging condition, and the powertrain data channel, the body control data channel and the auxiliary driving channel need to be awakened, so that the low-voltage energy consumption of the whole vehicle is about 150W per hour. According to the embodiment of the application, the VCU, the BMS, the DCDC module and the OBC are only awakened to maintain the slow charging state under the slow charging working condition, the power consumption of the VCU is about 12W, BMS/hour, the power consumption of the OBC is about 12W/hour, the power consumption of the data acquisition terminal is about 5W/hour, and it can be seen that the low-voltage energy consumption of the whole vehicle is only 41W/hour under the slow charging working condition, and compared with the traditional electric vehicle network system, the power consumption of 109W/hour can be reduced. Assuming that the slow charging state of the whole vehicle is maintained for 10 hours, the total amount of electricity saved in the charging period of 600 slow charging is about 654 KWH.
Step S340: responding to the wake-up signal, and sending a wake-up instruction to the electronic control unit in the dormant state so as to convert the electronic control unit in the dormant state into the wake-up state.
In this embodiment, the wake-up signal may be, but is not limited to, a vehicle unlock signal. Under the working condition of slow charging, when all the other electronic control units except the VCU, the BMS, the DCDC module and the OBC and the gateways are in the dormant state, if a vehicle unlocking signal is detected, a waking command is sent to the electronic control units and the gateways in the dormant state, so that the gateways of the electronic control units in the dormant state are converted into the working state, and the normal work of the electric automobile is not influenced.
Further, after charging is complete, the VCU may wake up the IPU for charge bleed.
In some embodiments, upon detecting that the vehicle is in an uncharged locked state, a sleep command may be sent to all of the electronic control units and the gateway to cause all of the electronic control units and the gateway to enter a sleep state. Specifically, when the VCU detects that the vehicle is in an uncharged locked state, it indicates that the vehicle is in an unattended state, so that the VCU may send a sleep instruction to all the electronic control units and the gateway, so that all the electronic control units and the gateway enter a sleep state, thereby reducing power consumption.
The control method provided by the embodiment is applied to the electric vehicle network system, and the control method responds to the first charging instruction and sends a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state; sending a sleep instruction to the motor controller to enable the motor controller to enter a sleep state; then, the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger are kept in working states, and charging data of the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger are transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel; and responding to the wake-up signal and sending a wake-up instruction to the electronic control unit in the dormant state to convert the electronic control unit in the dormant state into the wake-up state, so that power consumption can be greatly reduced under the condition that the electric vehicle normally transmits charging data of the VCU, the BMS, the DCDC module and the OBC under the slow charging working condition. And can awaken in time according to the wake-up signal when the electronic control unit and the gateway except VCU, BMS, DCDC module and OBC are in dormancy, keep the normal operation of electric automobile.
As shown in fig. 4, the embodiment of the present application further provides another control method 400, which can be also applied to the electric vehicle network system 100 described above. In the embodiment of the present application, the control method 400 may include the following steps S410 to S440.
Step S410: and responding to the second charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state.
In this embodiment, the second charging command is a fast charging command. When the VCU detects that the charging gun is connected with the quick charging interface, the VCU receives a quick charging instruction and controls the electric automobile to enter a quick charging working condition. Optionally, when the VCU detects that the wireless charging module is triggered, the VCU may also receive a quick charging instruction and control the electric vehicle to enter a quick charging condition. Optionally, when the VCU detects that the charging gun is connected to the electric vehicle or detects that the wireless charging module is triggered, the VCU may further receive a fast charging instruction triggered by a user, and make the electric vehicle enter a fast charging condition in response to the fast charging instruction, for example, the user issues a voice fast charging instruction or a touch screen fast charging instruction through the central control screen.
Further, under the fast charging condition, the VCU may send a sleep command to the second group of electronic control units and the gateway, that is, send sleep commands to all the other electronic control units and gateways in the network system except the first group of electronic control units. Specifically, the VCU may send a sleep command to the gateway through the powertrain data channel, and the gateway forwards the sleep command to the electronic control units such as the ICM, the PEPS, and the BCM through the body control data channel, so that the electronic control units such as the ICM, the PEPS, and the BCM enter a sleep state, and the gateway may also forward the sleep command to the electronic control units such as the PAS and the BSD through the driving assistance data channel, so that the electronic control units such as the PAS and the BSD enter the sleep state. And meanwhile, the gateway also enters a sleep state according to the sleep instruction.
Under the working condition of quick charging, the first group of electronic control units connected with the power assembly data channel maintains the charging state of the electric automobile, so that after the second group of electronic control units and the gateway are both in the dormant state, the power consumption of the electric automobile under the working condition of quick charging can be greatly reduced.
Step S420: and sending a sleep instruction to the vehicle-mounted charger and the motor controller so as to enable the vehicle-mounted controller and the motor controller to enter a sleep state.
In this embodiment, under the fast charging working condition, the VCU further sends a sleep command to the OBC and the IPU through the power assembly data channel, so that the IPU enters a sleep state. Further, under the condition of quick charging, only the VCU, the BMS and the DCDC module in the first group of the electronic control units are needed to maintain the quick charging state of the battery car. Specifically, when the charging gun is connected with the quick charging interface, the charging gun outputs direct current, the DCDC module converts the direct current into a battery pack for charging, and meanwhile the BMS and the VCU manage and control the charging of the battery pack. Therefore, under the working condition of quick charging, the charging data of the first group of electronic control units is provided by the DCDC module VCU and the BMS, the VCU sends a sleep instruction to the OBC and the IPU through the power assembly data channel to enable the OBC and the IPU to enter a sleep state, and then all the electronic control units except the VCU, the BMS and the DCDC module in the network system are enabled to enter the sleep state, so that the power consumption of the electric automobile under the working condition of quick charging is further reduced.
Step S430: and the vehicle control unit, the battery management system and the direct current conversion module are kept in working states, and charging data of the vehicle control unit, the battery management system and the direct current conversion module are transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
In this embodiment, under the fast charging operating mode, keep VCU, BMS and DCDC module to awaken and be in operating condition to maintain the fast charging state of electric automobile. And the charging data of the VCU, the BMS and the DCDC module under the quick charging working condition is directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
Because the auxiliary data channel is arranged between the data acquisition terminal and the power assembly data channel, the charging data of the VCU, the BMS and the DCDC module can be directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel under the quick charging working condition without transmitting the charging data to the data acquisition terminal through the gateway, so that the data acquisition terminal can still normally receive the charging data of the first group of electronic control units after the gateway enters the dormant state.
This embodiment is through all other electronic control units and gateways except VCU, BMS and DCDC module entering dormant state under the operating mode that charges soon to only awaken VCU, BMS and DCDC module and maintain the state of charging soon, rethread power assembly data channel and supplementary data channel are direct will awaken the data transmission that charges of VCU, BMS and DCDC module to data acquisition terminal, thereby greatly reduce the power consumption of electric automobile under the operating mode that charges soon under making data acquisition terminal can normally receive the data that charges.
In a specific implementation scenario, the gateway, the high-voltage system and the constant-current module of the conventional electric vehicle network system need to work under the fast charging condition, and the power assembly data channel, the vehicle body control data channel and the auxiliary driving channel need to be awakened, so that the low-voltage energy consumption of the whole vehicle is about 150W per hour. According to the embodiment of the application, only the VCU, the BMS and the DCDC module are awakened to maintain the quick charging state under the quick charging working condition, wherein the power consumption of the VCU is about 12W, BMS power consumption per hour and about 8W power consumption of the 12W, DCDC module per hour, the power consumption of the data acquisition terminal is about 5W per hour, and it can be seen that the low-voltage energy consumption of the whole vehicle is only 37W per hour under the quick charging working condition, and compared with a traditional electric vehicle network system, the power consumption of 114W per hour can be reduced. Assuming that the fast charging state of the whole vehicle is maintained for 10 hours, the total saved electric quantity in a charging period of 600 times of fast charging is about 684 KWH.
Step S440: responding to the wake-up signal, and sending a wake-up instruction to the electronic control unit in the dormant state so as to convert the electronic control unit in the dormant state into the wake-up state.
In this embodiment, the wake-up signal may be, but is not limited to, a vehicle unlock signal. Under the working condition of quick charging, when all the other electronic control units and gateways except the VCU, the BMS and the DCDC module are in a dormant state, if a vehicle unlocking signal is detected, a waking command is sent to the electronic control units and the gateways in the dormant state, so that the gateways of the electronic control units in the dormant state are converted into a working state, and the normal work of the electric automobile is not influenced.
Further, after charging is complete, the VCU may wake up the IPU for charge bleed.
In some embodiments, upon detecting that the vehicle is in an uncharged locked state, a sleep command may be sent to all of the electronic control units and the gateway to cause all of the electronic control units and the gateway to enter a sleep state. Specifically, when the VCU detects that the vehicle is in an uncharged locked state, it indicates that the vehicle is in an unattended state, so that the VCU may send a sleep instruction to all the electronic control units and the gateway, so that all the electronic control units and the gateway enter a sleep state, thereby reducing power consumption.
The control method provided by the embodiment is applied to the electric vehicle network system, and the control method responds to the second charging instruction and sends a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state; sending a sleep instruction to the vehicle-mounted charger and the motor controller so as to enable the vehicle-mounted controller and the motor controller to enter a sleep state; the method comprises the steps that a vehicle control unit, a battery management system and a direct current conversion module are kept in working states, and charging data of the vehicle control unit, the battery management system and the direct current conversion module are transmitted to a data acquisition terminal through a power assembly data channel and an auxiliary data channel; and responding to the wake-up signal and sending a wake-up instruction to the electronic control unit in the dormant state to convert the electronic control unit in the dormant state into the wake-up state, so that the power consumption can be greatly reduced under the condition that the electric vehicle normally transmits charging data of the VCU, the BMS and the DCDC module under the quick charging working condition. And the electronic control units except the VCU, the BMS and the DCDC module and the gateway can be awakened in time according to the awakening signal when in dormancy, so that the normal operation of the electric automobile is kept.
As shown in fig. 5, an embodiment of the present application further provides a vehicle 500, where the vehicle 500 includes a vehicle body 510 and the electric vehicle network system 100 as described above disposed in the vehicle body.
The vehicle provided by the embodiment comprises a data acquisition terminal, a plurality of electronic control units, a gateway, at least two data channels and an auxiliary data channel; the plurality of electronic control units comprise a first group of electronic control units and a second group of electronic control units; the at least two paths of data channels transmit the data of the electronic control units to the data acquisition terminal through the gateway; the at least two data channels comprise a power assembly data channel, and the power assembly data channel is connected with the first group of electronic control units and is used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel.
Although the present application has been described with reference to the preferred embodiments, it is to be understood that the present application is not limited to the disclosed embodiments, but rather, the present application is intended to cover various modifications, equivalents and alternatives falling within the spirit and scope of the present application.
Claims (10)
1. An electric vehicle network system, comprising:
a data acquisition terminal;
a plurality of electronic control units, the plurality of electronic control units including a first set of electronic control units and a second set of electronic control units;
a gateway;
the at least two data channels transmit the data of the electronic control units to the data acquisition terminal through the gateway; the at least two data channels comprise a power assembly data channel, and the power assembly data channel is connected with the first group of electronic control units and is used for transmitting charging data of the first group of electronic control units; and
and the power assembly data channel also directly transmits the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel.
2. The electric vehicle network system of claim 1, wherein the first set of electronic control units comprises a vehicle control unit, a battery management system, a dc conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the vehicle control unit, the battery management system, the direct current conversion module, the vehicle-mounted charger and the intelligent power control unit.
3. The electric vehicle network system of claim 1 or 2, wherein the at least two data channels and the auxiliary data channel are controller area network data channels.
4. A control method applied to the electric vehicle network system according to any one of claims 1 to 3, the method comprising:
responding to a charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state; and
and transmitting the charging data of the first group of electronic control units to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
5. The method of claim 4, wherein the charging instructions comprise a first charging instruction and a second charging instruction, wherein the first charging instruction indicates a charging power that is less than a charging power indicated by the second charging instruction.
6. The control method of claim 5, wherein the first set of electronic control units comprises a vehicle control unit, a battery management system, a DC conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the vehicle control unit, the battery management system, the direct current conversion module, the vehicle-mounted charger and the intelligent power control unit; the responding to the charging instruction and sending a sleep instruction to the second group of electronic control units and the gateway to enable the second group of electronic control units and the gateway to enter a sleep state includes:
responding to a first charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state;
the charging data of the first group of electronic control units are transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel, and the method comprises the following steps:
sending a sleep instruction to the intelligent power control unit to enable the intelligent power control unit to enter a sleep state; and
and keeping the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger in working states, and transmitting charging data of the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
7. The control method of claim 5, wherein the first set of electronic control units comprises a vehicle control unit, a battery management system, a DC conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the vehicle control unit, the battery management system, the direct current conversion module, the vehicle-mounted charger and the intelligent power control unit; the responding to the charging instruction and sending a sleep instruction to the second group of electronic control units and the gateway to enable the second group of electronic control units and the gateway to enter a sleep state includes:
responding to a second charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway so as to enable the second group of electronic control units and the gateway to enter a sleep state;
the charging data of the first group of electronic control units are transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel, and the method comprises the following steps:
sending a sleep instruction to the vehicle-mounted charger and the intelligent power control unit so as to enable the vehicle-mounted charger and the intelligent power control unit to enter a sleep state; and
and keeping the vehicle control unit, the battery management system and the direct current conversion module in working states, and transmitting charging data of the vehicle control unit, the battery management system and the direct current conversion module to the data acquisition terminal through the power assembly data channel and the auxiliary data channel.
8. The control method of claim 4, wherein the method further comprises:
and when the vehicle is detected to be in an uncharged locked state, sending a sleep instruction to all the electronic control units and the gateway so as to enable all the electronic control units and the gateway to enter a sleep state.
9. The control method according to any one of claims 4 to 8, wherein after the charging data of the first group of electronic control units is transmitted to the data acquisition terminal through the powertrain data channel and the auxiliary data channel, the method further comprises:
responding to a wake-up signal, and sending a wake-up instruction to the electronic control unit in the dormant state so as to convert the electronic control unit in the dormant state into the wake-up state, wherein the wake-up signal comprises a vehicle unlocking signal.
10. A vehicle comprising a vehicle body and the electric vehicle network system according to any one of claims 1 to 3 provided in the vehicle body.
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