CN113459973B - Electric automobile network system, control method and vehicle - Google Patents
Electric automobile network system, control method and vehicle Download PDFInfo
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- CN113459973B CN113459973B CN202110784582.7A CN202110784582A CN113459973B CN 113459973 B CN113459973 B CN 113459973B CN 202110784582 A CN202110784582 A CN 202110784582A CN 113459973 B CN113459973 B CN 113459973B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—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
- 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
- B60R16/023—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 for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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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 paths of 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; at least two paths of data channels transmit data of a plurality of electronic control units to a data acquisition terminal through a gateway; the power assembly data channels are connected with the first group of electronic control units and are used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits 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 uses a vehicle-mounted power supply as power and uses a motor to drive wheels to run and meets various requirements of road traffic and safety regulations. At present, under the charging working condition of an electric automobile, the whole network system needs to upload data, and the whole network system is awakened, so that the power consumption under the charging working condition is higher.
Disclosure of Invention
In view of the above problems, the embodiment of the application provides an electric automobile network system, a control method and a vehicle, which can reduce the power consumption of the electric automobile under a charging working 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 paths of 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; at least two paths of data channels transmit data of a plurality of electronic control units to a data acquisition terminal through a gateway; the power assembly data channels are connected with the first group of electronic control units and are used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits 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 controller, a battery management system, a direct current conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the whole vehicle controller, 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 electric automobile network system of any one of the above, where the method includes responding to a charging instruction, and sending a sleep instruction to the second group of electronic control units and the gateway, so as to make 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 the data acquisition terminal through the power assembly data channel and the 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 controller, a battery management system, a direct current conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the whole vehicle controller, 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 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 a dormancy state, wherein the method comprises the following steps of: responding to the first charging instruction, and sending a 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 a dormancy state; transmitting 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, comprising: sending a sleep instruction to the intelligent power control unit so as to enable the intelligent power control unit to enter a sleep state; and keeping the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger in a working state, 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.
In some embodiments, the first set of electronic control units includes a vehicle controller, a battery management system, a direct current conversion module, an on-board charger, and an intelligent power control unit; the power assembly data channel is connected with the whole vehicle controller, 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 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 a dormancy state, wherein the method comprises the following steps of: responding to the second charging instruction, and sending a 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 a dormancy state; transmitting 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, comprising: sending a dormancy 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 dormancy state; and maintaining the whole vehicle controller, the battery management system and the direct current conversion module in a working state, and transmitting charging data of the whole vehicle controller, 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 of the electronic control units and the gateway to put all of the electronic control units and the gateway into a sleep state upon detecting that the vehicle is in an uncharged locked state.
In some embodiments, after the charging data of the first set 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, so that the electronic control units in the sleep state are converted into the wake-up state, and 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 according to any one of the above.
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 paths of 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; at least two paths of data channels transmit data of a plurality of electronic control units to a data acquisition terminal through a gateway; the power assembly data channels are connected with the first group of electronic control units and are used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel. According to the electric automobile network system provided by the application, 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, so that a gateway and the second group of electronic control units do not need to be awakened, and the power consumption of the electric automobile under a charging working condition is reduced.
These and other aspects of the application will be more readily apparent from the following description of the embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of an electric automobile network system according to an embodiment of the present application.
Fig. 2 shows a flow chart of a control method according to an embodiment of the present application.
Fig. 3 shows a flow chart of another control method according to an embodiment of the present application.
Fig. 4 shows a flow chart of yet another control method according to an 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
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for 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 used for data acquisition through the CAN network, and acquired real-time data are stored in an internal storage medium.
CAN (Controller Area Network ) bus: CAN belongs to the field bus category, is a serial communication network which effectively supports distributed control or real-time control.
CAN (Controller Area Network ) gateway: 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 uses a vehicle-mounted power supply as power and uses a motor to drive wheels to run and meets various requirements of road traffic and safety regulations. At present, under the charging working condition of an electric automobile, the whole network system needs to upload data, and the whole network system is awakened, so that the power consumption under the charging working condition is higher.
The inventor provides an electric automobile network system through long-term research and experiments, which comprises a data acquisition terminal, a plurality of electronic control units, a gateway, at least two paths of 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; at least two paths of data channels transmit data of a plurality of electronic control units to a data acquisition terminal through a gateway; the power assembly data channels are connected with the first group of electronic control units and are used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits 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 automobile network system 100 according to an embodiment of the present application. The electric automobile network system 100 comprises a data acquisition terminal 110, a plurality of electronic control units 120, a gateway 130, at least two paths of data channels and auxiliary data channels. The data acquisition terminal 110 is a T-BOX (Telematics BOX), the gateway 130 is a CAN (Controller Area Network ) gateway 130, and the electronic control unit is ECU (Electronic Control Unit). At least two paths of data channels transmit data of the plurality of electronic control units 120 to the data acquisition terminal 110 through the gateway 130. Specifically, the plurality of 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 this embodiment, the data of the plurality of electronic control units 120 may include, but is not limited to, powertrain data, body control data, and auxiliary driving data.
The plurality of electronic control units 120 includes a first set of electronic control units 121 and a second set of electronic control units 122. The at least two data channels include at least a powertrain data channel, the powertrain data channel being connected to a first set of electronic control units 121 of the plurality of electronic control units 120, and other data channels of the at least two data channels, excluding the powertrain data channel, being connected to a second set of electronic control units 122 of the plurality of electronic control units. The first set of electronic control units 121 are capable of transmitting data to the gateway 130 via the powertrain data channel, and the gateway 130 forwards the data of the first set of electronic control units 121 to the data acquisition terminal 110. The second set of electronic control units 122 can transmit data to the gateway 130 through other data channels except for the data channel of the power assembly of the at least two data channels, and the gateway 130 forwards the data of the second set 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 may directly transmit charging data of the first set of electronic control units 121 to the data acquisition terminal 110 through the auxiliary data channel. Specifically, under the charging condition, the first set of electronic control units 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 the conventional architecture of the electric vehicle network system, all data of the electronic control unit 120 are forwarded to the data acquisition terminal 110 through the gateway 130, and in the charging condition, the electronic control unit 120 irrelevant to charging is awakened, and meanwhile, the gateway 130 and all data channels are required to be awakened to prepare for data transmission, so that the power consumption is higher in 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 dormancy under the charging working condition, and only the first group of electronic control units 121 maintaining the charging working condition are required to be awakened, thereby greatly reducing the power consumption of the electric vehicle under the charging working condition.
In this embodiment, the at least two paths of data channels may further include a vehicle body control data channel and a driving assistance 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 auxiliary driving data channel can transmit the auxiliary driving data in the second set of electronic control units 122 to the gateway 130, which gateway 130 forwards the auxiliary driving data to the data acquisition terminal 110. Further, the at least two data channels and the auxiliary data channel are both 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 controller (Vehicle control unit, VCU) 1211, a battery management system (Battery Management System, BMS1212, a DC-to-DC converter (DCDC) 1213, an On-Board Charger (OBC) 1214, and an intelligent power control unit (Intelligent Power Unit, IPU) 1215.VCU1211, BMS1212, DCDC module 1213, OBC1214, and IPU1215 are connected to a powertrain CAN bus and may transmit data to the gateway 130 via the powertrain data CAN bus, and may forward the data to the data acquisition terminal 110 via the gateway 130, and in a charging condition, the auxiliary data channel and powertrain data CAN bus may transmit the charging data of the first set of electronic control units 121 directly to the data acquisition terminal 110 without forwarding via the gateway 130, the second set of electronic control units 122 may include an ignition control module (Ignition Control Module, ICM), a no-body access and start system (Passive Entry Passive Start, PEPS), a body control module (Body Control Module, BCMs), a BCMs, and a BCMs System (BCMs) and may transmit the data to the gateway 130 via the gateway 130, and may forward the auxiliary data to the vehicle body access control system via the gateway 130, and may forward the data to the gateway 130 via the gateway 130, and then forwards the auxiliary driving data to the data acquisition terminal 110 through the gateway 130.
The embodiment of the application provides an electric automobile network system, which comprises a data acquisition terminal, a plurality of electronic control units, a gateway, at least two paths of data channels and an auxiliary data channel, wherein the data acquisition terminal is connected with the gateway; the plurality of electronic control units comprise a first group of electronic control units and a second group of electronic control units; at least two paths of data channels transmit data of a plurality of electronic control units to a data acquisition terminal through a gateway; the power assembly data channels are connected with the first group of electronic control units and are used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits 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, the embodiment of the present application further provides a control method 200, which can be applied to the electric automobile network system 100 described above. In an 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 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 a dormancy state.
In this embodiment, when it is detected that the charging gun is connected to the electric vehicle, a charging instruction may be received, and the electric vehicle may enter a charging condition in response to the charging instruction. Optionally, when the wireless charging module is detected to be triggered, a charging instruction may also be received and the electric vehicle may be brought into a charging condition. Optionally, when the charging gun is detected to be connected with the electric automobile or the wireless charging module is detected to be triggered, a charging instruction triggered by a user may also be received, and the electric automobile is enabled to enter a charging working 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 of the charging gun and the 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 the charging gun is detected to be connected with the quick charging interface of the electric automobile, a quick charging instruction can be received, and the electric automobile can enter a quick charging working condition in response to the quick charging instruction.
Further, under the charging condition, a dormancy instruction is sent to the second group of electronic control units and the gateway, that is, all electronic control units and gateways except the first group of electronic control units in the network system are sent to the dormancy instruction. Specifically, the gateway forwards the sleep instruction 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 ICM, PEPS, BCM, PAS, BSD, etc., so that ICM, PEPS, BCM, PAS, BSD, etc., electronic control unit enters dormant state, while the gateway also enters dormant state.
Step S220: 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.
In this embodiment, under the charging condition, 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 forwarding 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. In this embodiment, since the first set of electronic control units connected to the data channel of the power assembly maintains the charging state of the electric vehicle, only the first set of electronic control units need to be kept in the working state during the charging working condition, and the power consumption of the electric vehicle during the charging working condition can be greatly reduced after the second set of electronic control units and the gateway enter the dormant state.
The control method provided by the embodiment of the application is applied to the electric automobile 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 a 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 is in a charging working condition and normally transmits the charging data of the first electronic control units.
As shown in fig. 3, the embodiment of the present application further provides another control method 300, which is also applicable to the above-mentioned electric vehicle network system 100. 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 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 a dormancy 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 working condition. Optionally, when the VCU detects that the charging gun is connected with the electric vehicle or detects that the wireless charging module is triggered, the VCU may further receive a slow charging instruction triggered by the user, and respond to the slow charging instruction to enable the electric vehicle to enter a slow charging working condition, for example, the user issues a voice slow charging instruction or a touch screen slow charging instruction through the central control screen.
Further, in the slow charging condition, the VCU may send a sleep command to the second set of electronic control units and the gateway, that is, send a sleep command to all electronic control units and the gateway in the network system except the first set of electronic control units. Specifically, the VCU may send a sleep instruction to the gateway through the powertrain data channel, and the gateway forwards the sleep instruction to the electronic control unit such as ICM, PEPS, BCM through the vehicle body control data channel, so that the electronic control unit such as ICM, PEPS, BCM enters a sleep state, and forwards the sleep instruction to the electronic control unit such as PAS and BSD through the auxiliary driving data channel, so that the electronic control unit such as PAS and BSD enters the sleep state. And the gateway enters a dormant state according to the dormant instruction.
Under the slow charging working condition, the first group of electronic control units connected with the power assembly data channel maintain the charging state of the electric automobile, so that after the second group of electronic control units and the gateway enter the dormant state, the power consumption of the electric automobile under the slow charging working condition can be greatly reduced.
Step S320: and sending a dormancy instruction to the motor controller so as to enable the motor controller to enter a dormancy state.
In this embodiment, under the slow charging condition, the VCU further sends a sleep command to the IPU through the powertrain data channel, so that the IPU enters a sleep state. Further, under the slow charge condition, only the VCU, BMS, DCDC module and the OBC in the first set of electronic control units are required to maintain the slow charge state of the battery car. Specifically, when the charging gun is connected with the slow charging interface, the charging gun outputs alternating current, the OBC converts the alternating current output by the charging gun into direct current, the direct current is converted into battery packs through the DCDC module to be charged, and meanwhile, the BMS and the VCU manage and control the charging of the battery packs. Therefore, under the slow charging working condition, the charging data of the first group of electronic control units are provided by the OBC, the DCDC module, the VCU and the BMS, and after the VCU sends a dormancy instruction to the IPU through the power assembly data channel to enable the IPU to enter a dormancy state, all other electronic control units except the VCU, BMS, DCDC module and the OBC in the network system enter the dormancy state, so that the power consumption of the electric automobile under the slow charging working condition is further reduced.
Step S330: and the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger are kept in a working state, 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.
In this embodiment, under the slow charging condition, the VCU, BMS, DCDC module and the OBC are kept awake and in a working state, so as to maintain the slow charging state of the electric vehicle. And the VCU, BMS, DCDC module and the OBC charging data under the slow charging working condition are 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 VCU, BMS, DCDC module and the OBC charging data 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 forwarding 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.
According to the embodiment, all other electronic control units and gateways except the VCU, BMS, DCDC module and the OBC enter a dormant state under a slow charging working condition, the VCU, BMS, DCDC module and the OBC are only awakened to maintain the slow charging state, and charging data of the VCU, BMS, DCDC module and the OBC are directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel, so that the power consumption of the electric automobile under the slow charging working condition is greatly reduced under the condition that the data acquisition terminal can normally receive the charging data.
In a specific implementation scenario, a gateway, a high-voltage system and a constant-voltage module of a traditional electric automobile network system need to work under a slow charging working condition, and a power assembly data channel, a vehicle body control data channel and an auxiliary driving channel all need to be awakened, so that the low-voltage energy consumption of the whole automobile is about 150W per hour. According to the embodiment of the application, only the VCU, BMS, DCDC module is woken up and the OBC is maintained in a slow charging state under a slow charging working condition, wherein the power consumption of the VCU is about 12/W, BMS/hour, the power consumption of the W, DCDC module/OBC is about 12/hour, and the power consumption of the data acquisition terminal is about 5/hour. Assuming that the slow charge state of the whole vehicle is maintained for 10 hours, the total amount of electricity which can be saved in the 600 slow charge charging periods is about 654KWH.
Step S340: and responding to the wake-up signal and sending a wake-up instruction to the electronic control unit in the dormant state so as to enable the electronic control unit in the dormant state to be converted 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 slow charging working condition, when all other electronic control units and gateways except the VCU, BMS, DCDC module and the OBC are in a dormant state, if a vehicle unlocking signal is detected, a wake-up instruction is sent to the electronic control unit and the gateway in the dormant state, so that the gateway of the electronic control unit in the dormant state is converted into a working state, and the normal operation of the electric automobile is not affected.
Further, when charging is complete, the VCU may wake the IPU for charge draining.
In some embodiments, when 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 put all of the electronic control units and the gateway into 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 unmanned state, so the VCU may send a sleep command 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 automobile network system, and the control method responds to the first charging instruction and sends a 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 a dormancy state; and sending a dormancy instruction to the motor controller so as to enable the motor controller to enter a dormancy state; then, the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger are kept in a working state, 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 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 so as to enable the electronic control unit in the dormant state to be converted into the wake-up state, thereby greatly reducing the power consumption under the condition that the electric automobile is in a slow charge working condition and normally transmits the charging data of the VCU, BMS, DCDC module and the OBC. And can in time wake up 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 electric automobile's normal operating.
As shown in fig. 4, the embodiment of the present application further provides another control method 400, which is equally applicable to the above-mentioned electric vehicle network system 100. In an embodiment of the present application, the control method 400 may include the following steps S410 to S440.
Step S410: responding to the second charging instruction and sending a 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 a dormancy 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 fast charging instruction and control the electric vehicle to enter a fast charging working condition. Optionally, when the VCU detects that the charging gun is connected with the electric vehicle or detects that the wireless charging module is triggered, the VCU may further receive a quick charging instruction triggered by the user, and respond to the quick charging instruction to enable the electric vehicle to enter a quick charging working condition, for example, the user issues a voice quick charging instruction or a touch screen quick charging instruction through the central control screen.
Further, in the fast charging condition, the VCU may send a sleep command to the second set of electronic control units and the gateway, that is, send a sleep command to all electronic control units and the gateway in the network system except the first set of electronic control units. Specifically, the VCU may send a sleep instruction to the gateway through the powertrain data channel, and the gateway forwards the sleep instruction to the electronic control unit such as ICM, PEPS, BCM through the vehicle body control data channel, so that the electronic control unit such as ICM, PEPS, BCM enters a sleep state, and forwards the sleep instruction to the electronic control unit such as PAS and BSD through the auxiliary driving data channel, so that the electronic control unit such as PAS and BSD enters the sleep state. And the gateway enters a dormant state according to the dormant instruction.
Under the condition of quick charge, the first group of electronic control units connected with the power assembly data channel maintain the charging state of the electric automobile, so that after the second group of electronic control units and the gateway enter the dormant state, the power consumption of the electric automobile under the condition of quick charge can be greatly reduced.
Step S420: and sending a dormancy 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 dormancy state.
In this embodiment, under the fast charging condition, the VCU further sends a sleep command to the OBC and the IPU through the powertrain data channel, so that the IPU enters a sleep state. Further, in the fast charge condition, only the VCU, BMS, and DCDC module in the first set of electronic control units are required to maintain the fast charge 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 fast charging working condition, the charging data of the first group of electronic control units are provided by the DCDC module VCU and the BMS, and after the VCU sends a dormancy instruction to the OBC and the IPU through the power assembly data channel to enable the OBC and the IPU to enter a dormancy state, all other electronic control units except the VCU, the BMS and the DCDC module in the network system enter the dormancy state, so that the power consumption of the electric automobile under the fast charging working condition is further reduced.
Step S430: and the whole vehicle controller, the battery management system and the direct current conversion module are kept in a working state, and charging data of the whole vehicle controller, 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 condition, the VCU, BMS and DCDC module are kept awake and in a working state, so as to maintain the fast charging state of the electric vehicle. And the charging data of the VCU, the BMS and the DCDC module under the fast charging working condition are 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 forwarding 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.
According to the embodiment, all other electronic control units and gateways except the VCU, the BMS and the DCDC module enter a dormant state under a quick charging working condition, and only the VCU, the BMS and the DCDC module are awakened to maintain the quick charging state, and charging data of the awakening VCU, the BMS and the DCDC module are directly transmitted to the data acquisition terminal through the power assembly data channel and the auxiliary data channel, so that the power consumption of the electric automobile under the quick charging working condition is greatly reduced under the condition that the data acquisition terminal can normally receive the charging data.
In a specific implementation scenario, a gateway, a high-voltage system and a constant-voltage module of a traditional electric automobile network system need to work under a fast charging working condition, and a power assembly data channel, a vehicle body control data channel and an auxiliary driving channel all need to be awakened, so that the low-voltage energy consumption of the whole automobile 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 charge state under the quick charge working condition, wherein the power consumption of the VCU is about 12W/h, the power consumption of the W, DCDC module is about 8W/h, and the power consumption of the data acquisition terminal is about 5W/h, so that the low-voltage energy consumption of the whole vehicle is only 37W/h under the quick charge working condition, and the power consumption of 114W/h can be reduced compared with the power consumption of the traditional electric vehicle network system. Assuming that the fast charge state of the whole vehicle is maintained for 10 hours, the total amount of electricity which can be saved in the 600 fast charge charging cycles is about 684KWH.
Step S440: and responding to the wake-up signal and sending a wake-up instruction to the electronic control unit in the dormant state so as to enable the electronic control unit in the dormant state to be converted 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 condition of quick charge, when all 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 wake-up instruction is sent to the electronic control unit and the gateway in the dormant state, so that the gateway of the electronic control unit in the dormant state is converted into a working state, and the normal work of the electric automobile is not influenced.
Further, when charging is complete, the VCU may wake the IPU for charge draining.
In some embodiments, when 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 put all of the electronic control units and the gateway into 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 unmanned state, so the VCU may send a sleep command 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 automobile network system, and the control method responds to the second 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 a dormancy state; sending a dormancy 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 dormancy state; the method comprises the steps that a whole vehicle controller, a battery management system and a direct current conversion module are kept in a working state, and charging data of the whole vehicle controller, 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 so as to enable the electronic control unit in the dormant state to be converted into the wake-up state, thereby greatly reducing the power consumption under the condition that the electric automobile is in a quick charge working condition and normally transmits the charge data of the VCU, the BMS and the DCDC module. And can in time wake up according to the wake-up signal when electronic control unit and gateway except VCU, BMS and DCDC module are in dormancy, keep electric automobile's normal operating.
As shown in fig. 5, the 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 paths of 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; at least two paths of data channels transmit data of a plurality of electronic control units to a data acquisition terminal through a gateway; the power assembly data channels are connected with the first group of electronic control units and are used for transmitting charging data of the first group of electronic control units; the power assembly data channel also directly transmits 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 in terms of the preferred embodiments, it should be understood that the present application is not limited to the specific embodiments, but is capable of numerous modifications and equivalents, and alternative embodiments and modifications of the embodiments described above, without departing from the spirit and scope of the present application.
Claims (9)
1. An electric vehicle network system, comprising:
a data acquisition terminal;
a plurality of electronic control units including a first set of electronic control units and a second set of electronic control units;
the gateway is used for receiving the dormancy instruction under the charging working condition and forwarding the dormancy instruction to the second group of electronic control units; the gateway and the second group of electronic control units are used for entering a dormant state according to the dormant instruction;
at least two paths of data channels, wherein the at least two paths of data channels transmit the data of the plurality of electronic control units to the data acquisition terminal through the gateway; the at least two paths of data channels comprise power assembly data channels, and the power assembly data channels are connected with the first group of electronic control units and are used for transmitting charging data of the first group of electronic control units; and
the power assembly data channel is used for directly transmitting the charging data of the first group of electronic control units to the data acquisition terminal through the auxiliary data channel under the charging working condition;
the first group of electronic control units comprise a whole vehicle controller, a battery management system, a direct current conversion module, an on-vehicle charger and an intelligent power control unit; the whole vehicle controller, the battery management system, the direct current conversion module, the vehicle-mounted charger and the intelligent power control unit are connected with the power assembly data channel;
The whole vehicle controller is used for receiving a charging instruction, and the charging instruction comprises a first charging instruction and a second charging instruction; the whole vehicle controller is further used for sending a dormancy instruction to the gateway according to the first charging instruction; the whole vehicle controller is further used for sending a dormancy instruction to the intelligent power control unit through the power assembly data channel according to the first charging instruction; the intelligent power control unit is used for entering a dormant state according to the dormant instruction and keeping the whole vehicle controller, the battery management system, the direct current conversion module and the vehicle-mounted charger in a working state.
2. The electric vehicle network system of claim 1, wherein the at least two data channels and the auxiliary data channel are controller area network data channels.
3. A control method, which is characterized in that the method is applied to the electric automobile network system according to any one of claims 1-2, and the method comprises:
responding to a charging instruction and sending a 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 a dormancy 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.
4. The method of claim 3, 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.
5. The control method of claim 4, wherein the first set of electronic control units includes a vehicle controller, 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 whole vehicle controller, 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 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 a dormancy state, comprising:
responding to a first charging instruction, and sending a 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 a dormancy state;
The 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 comprises the following steps:
sending a sleep instruction to the intelligent power control unit so as 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 a working state, 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.
6. The control method of claim 4, wherein the first set of electronic control units includes a vehicle controller, 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 whole vehicle controller, 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 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 a dormancy state, comprising:
Responding to a second charging instruction, and sending a 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 a dormancy state;
the 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 comprises the following steps:
sending a dormancy 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 dormancy state; and
and keeping the whole vehicle controller, the battery management system and the direct current conversion module in a working state, and transmitting charging data of the whole vehicle controller, 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.
7. A control method according to claim 3, wherein the method further comprises:
and when detecting that the vehicle is in an uncharged locking state, sending a dormancy 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 dormancy state.
8. The control method according to any one of claims 3 to 7, 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:
and responding to a wake-up signal and sending a wake-up instruction to the electronic control unit in the dormant state so as to enable the electronic control unit in the dormant state to be converted into the wake-up state, wherein the wake-up signal comprises a vehicle unlocking signal.
9. A vehicle comprising a vehicle body and the electric vehicle network system according to any one of claims 1 to 2 provided in the vehicle body.
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| DE102023200872A1 (en) | 2023-02-03 | 2024-08-08 | Volkswagen Aktiengesellschaft | Method for exchanging energy between a battery of an electric vehicle and an associated charging infrastructure |
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