Vehicle and power supply method therefor, power supply management system, VCU, and power supply system

Abstract

Provided are a vehicle and a power supply method therefor, a power supply management system, a VCU, and a power supply system. The power supply method for a vehicle comprises: if it is determined that a power supply interface of the vehicle has accessed an external power unit, sending a notification message to a VCU of the vehicle, wherein the notification message is used for notifying that the power supply interface has accessed the external power unit; receiving a power supply switching instruction issued by the VCU; and in response to the power supply switching instruction, enabling the external power unit to supply power to the vehicle, so as to drive the vehicle to drive.

Description

Vehicle and power supply method thereof, power management system, VCU and power supply system

[0001] Related Cross-Reference

[0002] The present application claims priority to the Chinese patent application No. 202411363041.7, filed on September 26, 2024, entitled "Vehicle and power supply method thereof, power management system, VCU and power supply system", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicle power supply, in particular to a vehicle and a power supply method thereof, a power management system, a VCU and a power supply system. BACKGROUND

[0004] The vehicle includes a power battery. The power battery can supply power to the vehicle to drive the vehicle to travel. During the travel of the vehicle, the power battery may fail or have a power feeding problem, thereby causing the vehicle to stop traveling passively.

[0005] At present, the vehicle is moved from a stop position to a safe position by a tow truck to rescue the vehicle. It can be seen that the current vehicle rescue method is relatively single. SUMMARY

[0006] In view of the above problems, the present application provides a vehicle and a power supply method thereof, a power management system, a VCU and a power supply system, which effectively enriches the vehicle rescue method.

[0007] In a first aspect, the present application provides a power supply method of a vehicle, applied to a power management system of the vehicle, the vehicle further comprising a VCU and a power supply interface; the method comprising:

[0008] If it is determined that the power supply interface of the vehicle is connected to an external power unit, a notification message is sent to the VCU, the notification message being used to notify that the power supply interface is connected to the external power unit, the power supply interface being a power supply interface specially set for the external power unit by the vehicle or a charging interface of the vehicle;

[0009] A power supply switching instruction issued by the VCU is received;

[0010] In response to the power supply switching instruction, the external power unit is enabled to supply power to the vehicle to drive the vehicle to travel.

[0011] The power management system of the vehicle provided in the application can inform the VCU of the vehicle after determining that the power supply interface of the vehicle accesses the external power unit. Then the VCU can issue a power supply switching instruction to the power management system, and the power management system can enable the external power unit or the battery to supply power to the vehicle to drive the vehicle to move. That is, the method provided in the application can enable the vehicle to directly move to a safe position under the driving of the external power unit after the external power unit is accessed in the case of failure or power feeding of the power battery of the vehicle. On the one hand, the method enriches the way of moving the vehicle from a stop position to a safe position; on the other hand, compared with the way of moving the vehicle by a trailer or charging the power battery, the efficiency of moving the vehicle is improved, so that the vehicle can quickly move to a safe position, thereby realizing rapid road rescue of the vehicle.

[0012] Optionally, the vehicle further comprises a switch and a power system, the switch is connected with the power supply interface and the power system respectively; and enabling the external power unit to supply power to the power system in response to the power supply switching instruction comprises:

[0013] controlling the switch to be closed to enable the external power unit to supply power to the power system in response to the power supply switching instruction.

[0014] Optionally, the power management system of the vehicle is a battery management system (BMS) of the vehicle, and / or the external power unit is an external battery.

[0015] Optionally, after the power supply interface of the vehicle accesses the external power unit, the method further comprises:

[0016] receiving the parameter of the external power unit sent by the power management system of the external power unit;

[0017] forwarding the parameter of the external power unit to the VCU, so that the VCU controls the external power unit to supply power to the vehicle based on the parameter of the external power unit.

[0018] Optionally, the power management system of the external power unit can be a BMS of the external power unit.

[0019] Optionally, the vehicle further comprises a power device; and if it is determined that the power supply interface of the vehicle accesses the external power unit, a notification message is sent to the VCU, comprising:

[0020] If it is determined that the power supply interface of the vehicle accesses the external power unit and the power device fails or is power fed, a notification message is sent to the VCU.

[0021] Optionally, the power device is a power battery.

[0022] In a second aspect, a power supply method of a vehicle is provided, which is applied to a VCU of the vehicle, the vehicle further comprising a power management system and a power supply interface; the method comprising:

[0023] receiving a notification message sent by the power management system, the notification message being used to notify the power supply interface of the vehicle to access an external power unit; the power supply interface can be a charging interface of the vehicle;

[0024] issuing a power supply switching instruction to the power management system, the power supply switching instruction being used to instruct the power management system to enable the external power unit to supply power to the vehicle to drive the vehicle to move.

[0025] After receiving the notification message sent by the power management system and used to notify the power supply interface of the vehicle to access the external power unit, the VCU of the vehicle provided in the present application can issue a power supply switching instruction to the power management system to instruct the power management system to enable the external power unit to supply power to the vehicle to drive the vehicle to move. That is, the method provided in the present application can enable the vehicle to move directly under the driving of the external power unit after the external power unit is accessed when the power battery of the vehicle fails or is fed. In one aspect, the method enriches the way in which the vehicle moves from a stop position to a safe position. In another aspect, compared with the way in which the vehicle is towed or the power battery is charged, the method improves the efficiency of the vehicle movement, so that the vehicle can quickly move to a safe position, thereby realizing quick road rescue of the vehicle.

[0026] Optionally, the vehicle further comprises a power device. The notification message is sent by the power management system of the vehicle when it is determined that the power supply interface of the vehicle accesses the external power unit and it is determined that the power device of the vehicle fails or is fed. The power device can be a power battery.

[0027] Optionally, after issuing the power supply switching instruction to the power management system, the method further comprises:

[0028] receiving parameters of the external power unit forwarded by the power management system;

[0029] controlling the external power unit to supply power to the vehicle based on the parameters.

[0030] Optionally, the power management system is a BMS and / or the external power unit is an external battery.

[0031] In a third aspect, a power management system of a vehicle is provided, and the power management system comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the power management method of the power management system of the vehicle is implemented.

[0032] In a fourth aspect, a VCU of a vehicle is provided, and the VCU comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the power management method of the VCU of the vehicle is implemented.

[0033] In a fifth aspect, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program, and when the computer program is executed by a processor, the power management method of the vehicle is implemented.

[0034] In a sixth aspect, a vehicle is provided, and the vehicle comprises the power management system of the third aspect and the VCU of the fourth aspect.

[0035] In a seventh aspect, a power supply system is provided, and the power supply system comprises the external power unit and the vehicle of the sixth aspect.

[0036] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0037] FIG. 1 is a structural schematic diagram of a power supply system provided by an embodiment of the present application;

[0038] FIG. 2 is a structural schematic diagram of another power supply system provided by an embodiment of the present application;

[0039] FIG. 3 is a flowchart of a power supply method of a vehicle provided by an embodiment of the present application;

[0040] FIG. 4 is a flowchart of another power supply method of a vehicle provided by an embodiment of the present application. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise required by context, singular terms shall include pluralities and vice versa. Unless otherwise required by context, the use herein of the singular is also to be construed as a use of the plural and vice versa.

[0043] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0044] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments. It will be explicitly understood by those of ordinary skill in the art that the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0046] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0047] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] The vehicle includes a power battery. The power battery can supply power to the vehicle to drive the vehicle to travel. During the travel of the vehicle, the power battery may fail or feed power, causing the vehicle to be passively stopped (i.e., to be in a stall). For example, when the state of charge (SOC) of the power battery is low, the deviation of the calculated range of the vehicle is large. As a result, the power battery may feed power during the travel of the vehicle, causing the vehicle to be passively stalled.

[0049] At present, the vehicle is generally moved from a stop position to a safe position by means of a tow truck to rescue the vehicle. In addition, for the case of power battery feeding, the power battery can be charged after the power battery feeds power, so that the power battery supplies power to the power system again, thereby realizing vehicle rescue.

[0050] Therefore, the current vehicle rescue method, i.e., the method of moving from a stop position to a safe position, is relatively single. Moreover, both the method of towing and the method of charging the power battery need to wait for a certain period of time, such as the arrival of a rescue vehicle for the towing method and the charging of the power battery to a sufficient amount of power for the charging method. As a result, after the power battery fails or feeds power, the vehicle cannot be quickly moved to a safe position, and the cost is high and the user experience is poor.

[0051] Therefore, the vehicle rescue method provided in the embodiments of the present application, i.e., the method of moving from a stop position to a safe position, is relatively single. Moreover, both the method of towing and the method of charging the power battery need to wait for a certain period of time, such as the arrival of a rescue vehicle for the towing method and the charging of the power battery to a sufficient amount of power for the charging method. As a result, after the power battery fails or feeds power, the vehicle cannot be quickly moved to a safe position, and the cost is high and the user experience is poor.

[0052] The embodiment of the present application provides a power supply system, referring to FIG. 1, the power supply system comprises a vehicle 110 and an external power unit 120. The external power unit 120 is used for being connected with the vehicle 110 to supply power for the vehicle 110, so as to drive the vehicle 110 to run. Wherein, the external power unit 120 can be moved. Optionally, the external power unit 120 can be an external battery, and the external battery can be an external power battery.

[0053] Optionally, referring to FIG. 2, the power supply system can further comprise a connecting assembly 130. One end of the connecting assembly 130 can be connected with the vehicle 110, and the other end of the connecting assembly 130 can be connected with the external power unit 120. That is, the vehicle 110 and the external power unit 120 can be connected through the connecting assembly 130.

[0054] It can be understood that the connecting assembly 130 can be a standard direct-current vehicle to vehicle (V2V) charging and discharging connecting assembly. The direct-current V2V charging and discharging connecting assembly meets the requirements of GBT 18487.4. The interface of the external power unit 120 can be matched with the interface of the connecting assembly 130.

[0055] Please continue to refer to FIG. 1, the vehicle 110 can comprise a power supply interface 01, a power management system (not shown in FIG. 1) and a VCU (not shown in FIG. 1). The external power unit 120 can be connected with the power supply interface 01. The power management system is used for detecting whether the power supply interface 01 is connected with the external power unit 120, and informing the VCU after the power supply interface 01 is connected with the external power unit 120. The VCU is used for enabling the external power unit 120 to supply power for the vehicle 110 through the power management system after determining that the power supply interface 01 is connected with the external power unit 120, so that the vehicle 110 directly runs under the driving of the external power unit 120.

[0056] Optionally, the power management system can be a BMS of the vehicle. The power supply interface 01 can be a charging interface of the vehicle 110, or can be an interface specially set for the external power unit in the vehicle 110. Wherein, the power supply interface 01 can be a standard direct-current power supply interface or a standard alternating-current power supply interface. The direct-current power supply interface meets the requirements of GBT 20234.3, and the alternating-current power supply interface meets the requirements of GBT 20234.2.

[0057] It can be understood that after the external power unit 120 is connected to the power supply interface of the vehicle 110, the power management system of the external power unit 120 can send the parameters of the external power unit to the VCU through the power management system of the vehicle 110, so that the VCU controls the external power unit to supply power to the vehicle based on the parameters of the external power unit. Optionally, the power management system of the external power unit 120 can be the BMS of the external power unit 120.

[0058] The embodiment of the application provides a power supply method of a vehicle. The method is applied to a vehicle in a power supply system. For example, the vehicle 110 shown in FIG. 1 or FIG. 2. Referring to FIG. 3, the method comprises the following steps.

[0059] In step 101, the power management system of the vehicle sends a notification message to the VCU if it is determined that the power supply interface of the vehicle is connected to an external power unit.

[0060] The notification message is used to inform that the power supply interface is connected to the external power unit.

[0061] In step 102, the VCU sends a power supply switching instruction to the power management system of the vehicle.

[0062] After the VCU receives the notification message sent by the power management system of the vehicle, it can be determined that the power supply interface of the vehicle is connected to the external power unit, and then the power supply switching instruction can be sent to the power management system of the vehicle.

[0063] In step 103, the power management system of the vehicle enables the external power unit to supply power to the vehicle in response to the power supply switching instruction.

[0064] After the power management system of the vehicle receives the power supply switching instruction sent by the VCU, it can enable the external power unit to supply power to the vehicle in response to the power supply switching instruction, so that the vehicle directly drives under the driving of the external power unit.

[0065] In summary, the embodiment of the present application provides a power supply method of a vehicle. After determining that the power supply interface of the vehicle is connected to the external power unit, the power management system of the vehicle can inform the VCU of the vehicle. Then the VCU can issue a power supply switching instruction to the power management system, and the power management system can enable the external power unit to supply power to the vehicle to drive the vehicle to move. That is, the method provided by the embodiment of the present application can enable the vehicle to directly move under the driving of the external power unit after the external power unit is connected to the vehicle in the case of power battery failure or power feeding. On the one hand, the method enriches the way of moving the vehicle from the stop position to the safe position, that is, enriches the way of vehicle rescue. On the other hand, compared with the way of towing or charging the power battery, the efficiency of moving the vehicle is improved, so that the vehicle can quickly move to the safe position, thereby realizing the rapid road rescue of the vehicle.

[0066] The embodiment of the present application takes the power supply interface of the vehicle as the charging interface, the power management system of the vehicle as the BMS of the vehicle, and the external power unit as the external battery. The power management system of the external power unit is taken as the BMS of the external battery, and the power supply method of the vehicle provided by the embodiment of the present application is exemplarily described. The method can be applied to a power supply system, such as the power supply system shown in FIG. 1 or FIG. 2. Referring to FIG. 4, the method can include the following steps.

[0067] In step 201, if the BMS of the vehicle determines that the charging interface of the vehicle is connected to the external battery, the BMS detects whether the power device of the vehicle is faulty and power feeding.

[0068] The driver can connect the spare external battery to the charging interface of the vehicle. For example, the external battery can be connected to the charging interface through a connecting assembly. After the BMS of the vehicle detects that the charging interface is connected to the external battery, the BMS can detect whether the power device of the vehicle is faulty and power feeding.

[0069] If the BMS of the vehicle determines that the power device of the vehicle is faulty or power feeding, it can be determined that the power device cannot supply power to the vehicle, and then step 202 can be performed. If the BMS of the vehicle determines that the power device of the vehicle is not faulty and not power feeding, it can be determined that the power device can supply power to the vehicle, and then a prompt message can be issued. The prompt message is used to prompt the driver that the power device is normal, and prompt the driver to remove the external battery from the charging interface.

[0070] Optionally, the power device can be a power battery.

[0071] In step 202, a notification message is sent to the VCU.

[0072] After the charging interface of the vehicle accesses the external battery, if the BMS of the vehicle determines that the power device of the vehicle is faulty or is feeding, the BMS can send a notification message to the VCU. The notification message is used to notify that the charging interface accesses the external battery.

[0073] In step 203, the VCU sends a power supply switching instruction to the BMS of the vehicle.

[0074] After receiving the notification message, the VCU can determine that the power device of the vehicle is faulty or is feeding, and the vehicle cannot be driven to travel. Then, the VCU can send a power supply switching instruction to the BMS of the vehicle. The power supply switching instruction is used to instruct the BMS to enable the external battery to supply power to the vehicle.

[0075] In step 204, the BMS of the vehicle enables the external battery to supply power to the vehicle in response to the power supply switching instruction.

[0076] The external battery supplying power to the vehicle means that the external battery supplies power to a plurality of loads of the vehicle. The plurality of loads can at least include a power system of the vehicle. The power system is used to drive the vehicle to travel.

[0077] In the embodiment of the present application, the vehicle further includes a switch. The switch is connected with the charging interface and the power system of the vehicle respectively. For example, one end of the switch is connected with the charging interface, and the other end of the switch is connected with the power system. The BMS can control the switch to be closed in response to the power supply switching instruction sent by the VCU, so as to make the connection path between the external battery and the power system conductive. Thus, the external battery can supply power to the power system, so that the vehicle can travel under the driving of the power system. Optionally, the switch can be a relay.

[0078] It can be understood that the power system of the vehicle can include a driving motor and a motor control unit (MCU). After the external battery supplies power to the vehicle, the driving motor and the MCU of the vehicle can resume work. Correspondingly, the MCU can control the driving motor to work under the control of the VCU, so as to drive the vehicle to travel.

[0079] In the embodiment of the present application, the vehicle further comprises a high-voltage power distribution unit (PDU). The high-voltage PDU has an input end and a plurality of output ends. The input end can be connected with the charging interface of the vehicle, and each of the plurality of output ends can be connected with one of the plurality of loads of the vehicle. The switch can be located in the high-voltage PDU. One end of the switch can be connected with the input end of the high-voltage PDU, and the other end of the switch can be connected with each of the output ends of the high-voltage PDU, respectively. In this way, after the BMS of the vehicle controls the switch to be closed in response to the power supply switching instruction, the external battery can not only supply power to the power system, but also supply power to other loads of the vehicle. The other loads are loads of the plurality of loads except the power system.

[0080] The other loads can include a heating, ventilation and air conditioning (HAVC) system, a positive temperature coefficient (PTC) heater, a lighting system, a vehicle-mounted device, and the like.

[0081] In step 205, the BMS of the external battery sends parameters of the external battery to the BMS of the vehicle.

[0082] The parameters can include an SOC, a current, a voltage, and an allowable output power of the external battery, and the like.

[0083] In the embodiment of the present application, the BMS of the external battery and the BMS of the vehicle can communicate by using a controller area network (CAN) protocol. For example, CAN2.0B protocol can be used. In the process of communicating by using the CAN2.0B protocol, an extended frame supported by the CAN2.0B protocol can be used to interact data. The extended frame uses a 29-bit identifier. The data interacted between the BMS of the external battery and the BMS of the vehicle at least includes the parameters of the external battery.

[0084] It should be understood that the content of the data interacted between the BMS of the external battery and the BMS of the vehicle can be pre-set. In this way, the standardization of the communication interface of the BMS of the external battery and the BMS of the vehicle can be achieved.

[0085] In the embodiment of the present application, after the external battery is connected to the charging interface of the vehicle, the BMS of the vehicle can be woken up first. After the BMS of the vehicle is woken up, the BMS of the external battery can handshake with the BMS of the vehicle, so that the BMS of the external battery determines whether to use the external battery to supply power to the vehicle. After the BMS of the external battery determines to use the external battery to supply power to the vehicle, the BMS of the external battery and the BMS of the vehicle can configure the power supply parameters. Then, the external battery can supply power to the vehicle to directly drive the vehicle to run.

[0086] In step 206, the BMS of the vehicle forwards the parameters of the external battery to the VCU.

[0087] After the BMS of the vehicle receives the parameters of the external battery sent by the BMS of the external battery, the BMS of the vehicle can forward the parameters to the VCU.

[0088] In step 207, the VCU controls the external battery to supply power to the vehicle based on the parameters of the external battery.

[0089] The VCU can formulate an optimal driving strategy based on the parameters of the external battery and the state information of the vehicle, and output a control instruction to the BMS of the external battery based on the driving strategy. The BMS can adjust the output voltage and current of the external battery in response to the control instruction, so as to maximize the power demand of the multiple loads of the vehicle, so that the vehicle runs under the driving of the external battery.

[0090] It can be understood that the order of the steps of the power supply method of the vehicle provided in the embodiment of the present application can be adjusted appropriately, and the steps can be increased or decreased accordingly according to the situation. For example, step 202 can be deleted according to the situation; or steps 205 to 207 can also be deleted according to the situation. Any person skilled in the art can easily think of changes within the technical range disclosed in the present application, which should be covered within the protection scope of the present application, therefore, it will not be described again.

[0091] In summary, the embodiment of the present application provides a power supply method of a vehicle. After determining that the charging interface of the vehicle accesses the external battery, the BMS of the vehicle can inform the VCU of the vehicle. Then the VCU can issue a power supply switching instruction to the BMS, and the BMS can enable the external battery to supply power to the vehicle to drive the vehicle to move in response to the power supply switching instruction. That is, the method provided by the embodiment of the present application can enable the vehicle to directly move to a safe position under the driving of the external battery after the external battery is connected to the vehicle in the case of power battery failure or power feeding of the vehicle. On the one hand, the method enriches the way of moving the vehicle from a stop position to a safe position, that is, enriches the way of vehicle rescue. On the other hand, compared with the way of towing or charging the power battery, the efficiency of moving the vehicle to a safe position is improved, so that the vehicle can quickly move to a safe position, thereby realizing the rapid road rescue of the vehicle.

[0092] The embodiment of the present application provides a power management system of a vehicle, which can be used to execute the power supply method applied to the power management system in the above-mentioned method embodiment. The vehicle further comprises a VCU and a power supply interface. The power management system comprises a processor. The processor can be used to:

[0093] If it is determined that the power supply interface of the vehicle accesses the external power unit, a notification message is sent to the VCU, and the notification message is used to inform that the power supply interface accesses the external power unit;

[0094] The power supply switching instruction issued by the VCU is received;

[0095] In response to the power supply switching instruction, the external power unit is enabled to supply power to the vehicle to drive the vehicle to move.

[0096] Optionally, the vehicle further comprises a switch and a power system. The switch is connected with the power supply interface and the power system respectively. The processor can be used to:

[0097] In response to the power supply switching instruction, the switch is controlled to be closed to enable the external power unit to supply power to the power system.

[0098] Optionally, the processor can be further used to:

[0099] The parameter of the external power unit transmitted by the power management system of the external power unit is received;

[0100] The parameter of the external power unit is forwarded to the VCU, so that the VCU controls the external power unit to supply power to the vehicle based on the parameter.

[0101] Optionally, the vehicle further comprises a power device. The processor can be further used to:

[0102] If it is determined that the power supply interface of the vehicle is connected to the external power unit, and the power device fails or feeds power, a notification message is sent to the VCU.

[0103] Optionally, the power device is a power battery.

[0104] Optionally, the power management system is a BMS and / or the external power unit is an external battery.

[0105] Optionally, the power supply interface is a charging interface of the vehicle.

[0106] It can be understood that the power management system further includes a memory. The processor and the memory are connected, such as through a bus. The processor can be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the disclosure content of the present application. The processor can also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of DSP and microprocessor, etc.

[0107] The bus can include a path for transmitting information between the above-mentioned components. The bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0108] The memory is used to store a computer program corresponding to the power supply method of the vehicle of the above-mentioned embodiments of the present application, which is controlled and executed by the processor. The processor is used to execute the computer program stored in the memory to realize the content shown in the foregoing method embodiments.

[0109] The embodiments of the present application provide a VCU of a vehicle, which can be used to execute the power supply method applied to the VCU in the above-mentioned method embodiments. The vehicle further includes a battery management system and a power supply interface. The VCU includes a processor. The processor is used to:

[0110] receive a notification message sent by the power management system, the notification message being used to notify that the power supply interface of the vehicle accesses the external power unit;

[0111] send a power supply switching instruction to the power management system, the power supply switching instruction being used to instruct to enable the external power unit to supply power for the vehicle to drive the vehicle to travel.

[0112] Optionally, the processor can be further used to:

[0113] receive parameters of the external power unit forwarded by the power management system;

[0114] based on the parameters, control the external power unit to supply power for the vehicle.

[0115] Optionally, the vehicle further comprises a power device. The notification message is sent by the power management system of the vehicle in a case where it is determined that the power supply interface accesses the external power unit and it is determined that the power device of the vehicle is faulty or power feeding.

[0116] Optionally, the power management system is a BMS and / or the external power unit is an external battery.

[0117] Optionally, the power device is a power battery.

[0118] Optionally, the power supply interface is a charging interface of the vehicle.

[0119] It can be understood that the BMS further comprises a memory and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the content shown in the foregoing method embodiment is implemented.

[0120] The embodiment of the present application provides a computer readable storage medium, which stores a computer program, and when the computer program is executed by a processor, a power supply method of a vehicle provided in the foregoing method embodiment is implemented.

[0121] It is to be appreciated that the logical and / or steps represented in the flow diagrams or otherwise described herein, for example, can be considered as a list of executable instructions for implementing logic functions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor- containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions, or a combination thereof. For purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can specifically include the following: electrical connection (electrical) having one or more wires, a portable computer diskette (magnetic), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium can even be paper or other suitable medium upon which the program can be printed, as the program can be electronically obtained, for example, by optically scanning the paper or other suitable medium, then

[0122] It should be understood that portions of the present application can be realized with hardware, software, firmware or a combination thereof. In the foregoing embodiments, a number of steps or methods can be realized as software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if realized with hardware, and as in another embodiment, any one or a combination of the following technologies known in the art can be used: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and the like.

[0123] Although the embodiments of the present application have been shown and described above, it is to be understood that the above-described embodiments are exemplary only, and are not to be construed as limiting the present application, and that variations, modifications, substitutions and changes can be made to the above-described embodiments by one of ordinary skill in the art without departing from the scope of the present application.

Claims

1. A power supply method of a vehicle applied to a power management system of the vehicle, wherein, The vehicle further comprises a vehicle controller (VCU) and a power supply interface; and the method comprises: if it is determined that the power supply interface of the vehicle is connected to an external power unit, sending a notification message to the VCU, the notification message being used to notify that the power supply interface is connected to the external power unit; receiving a power supply switching instruction issued by the VCU; in response to the power supply switching instruction, enabling the external power unit to supply power to the vehicle to drive the vehicle to travel.

2. The method of claim 1, wherein, The vehicle further comprises a switch and a power system, the switch being connected to the power supply interface and the power system respectively; and enabling the external power unit to supply power to the power system in response to the power supply switching instruction comprises: in response to the power supply switching instruction, controlling the switch to be closed to enable the external power unit to supply power to the power system.

3. The method of claim 1 or 2, wherein, After the power supply interface of the vehicle is connected to the external power unit, the method further comprises: receiving parameters of the external power unit sent by a power management system of the external power unit; forwarding the parameters of the external power unit to the VCU to enable the VCU to control the external power unit to supply power to the vehicle based on the parameters of the external power unit.

4. The method according to any of claims 1 to 3, wherein, The vehicle further comprises a power device; and if it is determined that the power supply interface of the vehicle is connected to an external power unit, sending a notification message to the VCU comprises: if it is determined that the power supply interface of the vehicle is connected to an external power unit and the power device of the vehicle is faulty or is not feeding power, sending a notification message to the VCU.

5. The method of claim 4, wherein, The power device is a power battery.

6. The method of any one of claims 1-5, wherein, The power management system is a battery management system (BMS) and / or the external power unit is an external battery.

7. The method of any one of claims 1-6, wherein, The power supply interface is a charging interface of the vehicle.

8. A power supply method of a vehicle, applied to a VCU of the vehicle, wherein, The vehicle further comprises a power management system and a power supply interface; and the method comprises: receiving a notification message sent by the power management system, the notification message being used to notify that the power supply interface of the vehicle is connected to an external power unit; issuing a power supply switching instruction to the power management system, the power supply switching instruction being used to instruct the power management system to enable the external power unit to supply power to the vehicle to drive the vehicle to travel.

9. The method of claim 8, wherein, After the power supply switching instruction is issued to the power management system, the method further comprises: receiving parameters of the external power unit forwarded by the power management system; based on the parameters, controlling the external power unit to supply power to the vehicle.

10. The method of claim 8 or 9, wherein, The vehicle further comprises a power device; and the notification message is sent by the power management system of the vehicle in a case where it is determined that the power supply interface is connected to the external power unit and it is determined that the power device of the vehicle is faulty or is not feeding power.

11. The method of claim 10, wherein, The power device is a power battery.

12. The method of any one of claims 8-11, wherein, The power management system is a battery management system (BMS) and / or the external power unit is an external battery.

13. The method of any one of claims 8-12, wherein, The power supply interface is a charging interface of the vehicle.

14. A power management system for a vehicle, wherein, The power management system comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the method according to any one of claims 1-7 when executing the computer program.

15. A VCU of a vehicle, wherein, The VCU comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of claims 8-13 when executing the computer program.

16. A computer readable storage medium having stored thereon a computer program, wherein, The computer program is executable on the processor to implement the method of any one of claims 1-13.

17. A vehicle, wherein, Comprising: The power management system of claim 14, and the VCU of claim 15.

18. A power supply system, wherein, Comprising: The vehicle of claim 16, and the power management system of claim 17.

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