An electric vehicle power management system, method, electronic device, and storage medium

Abstract

The present invention discloses a power management system, method, electronic device and storage medium for an electric vehicle. The system includes: a vehicle domain controller that independently controls the high-voltage power supply by controlling the high-voltage control unit; the vehicle domain controller controls the power supply to the low-voltage electrical appliances by controlling the low-voltage control unit; a remote intelligent control terminal, a Bluetooth control module and a vehicle body controller are respectively connected to the vehicle domain controller to realize the vehicle's non-sensing power on and off control, power off control due to user action timeout and power off control under vehicle fault conditions. The present invention realizes the unified distribution of high and low voltage power supplies for the whole vehicle, and actually controls the branch power switches based on user needs to ensure the optimal energy consumption of the whole vehicle system; monitors user behavior, and provides a cut-off path when the user forgets to lock the vehicle electrically, thereby avoiding battery power consumption and property safety problems caused by the vehicle being powered on but not locked; and avoids problems such as failure of the brake assist and steering assist caused by failure of a single controller during vehicle operation.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically, to an electric vehicle power management system, method, electronic device, and storage medium. Background Technology

[0002] In electric vehicles, power management typically involves independent control of high and low voltage levels. For example, the Body Controller (BCM) controls the low-voltage power supply, the Battery Controller (LBC) controls the high-voltage power supply, and the thermal management system's power supply is controlled and distributed by the vehicle controller or thermal management controller. This independent control of high and low voltage power supplies prevents unified coordination, potentially leading to issues such as the low-voltage battery continuing to operate normally after a high-voltage fault, or the high-voltage battery draining due to the user forgetting to turn off the power. These problems generate user complaints and pose certain safety risks.

[0003] Therefore, how to provide a power management system, electronic devices, and storage media for electric vehicles has become a technical challenge that urgently needs to be solved in this field. Summary of the Invention

[0004] The purpose of this invention is to provide an electric vehicle power management system, method, electronic device, and storage medium.

[0005] The first aspect of this invention discloses an electric vehicle power management system, the system comprising: a vehicle domain controller (VDC), a remote intelligent control terminal (TBOX), a Bluetooth control module (BLU), a body controller (BCM), a high-voltage control unit, and a low-voltage control unit;

[0006] The vehicle domain controller (VDC) independently controls the high-voltage power supply through the high-voltage control unit.

[0007] The vehicle domain controller (VDC) controls the power supply to low-voltage electrical appliances through the low-voltage control unit.

[0008] The remote intelligent control terminal TBOX, Bluetooth control module BLU, and body controller BCM are respectively connected to the vehicle domain controller VDC to realize seamless power-on / off control of the vehicle, power-off control when user action timeout occurs, and power-off control in the event of a vehicle malfunction.

[0009] According to the system of the first aspect of the present invention, the high-voltage control unit includes: a main positive relay, a main negative relay, a pre-charge relay, a fast-charge positive relay, and a fast-charge negative relay;

[0010] The vehicle domain controller (VDC) controls the high-voltage power supply by connecting to the main positive relay, main negative relay, pre-charge relay, fast-charge positive relay, and fast-charge negative relay, thereby achieving pre-charging and fast charging.

[0011] According to the system of the first aspect of the present invention, the low-voltage control unit includes: an EV main control power supply controller, an air conditioning power supply controller, a body power supply controller, and a chassis power supply controller;

[0012] The vehicle domain controller (VDC) is connected to the EV main power supply controller to realize power supply control of the BMS and PCU controllers and components.

[0013] The vehicle domain controller (VDC) is connected to the air conditioning power supply controller to realize the power supply control of the vehicle thermal management system.

[0014] The vehicle domain controller (VDC) is connected to the body power supply controller to realize power supply control of the body system and audio-visual entertainment system.

[0015] The vehicle domain controller (VDC) is connected to the chassis power supply controller to realize power supply control of the EPB and EPS chassis systems.

[0016] According to the system of the first aspect of the present invention, the chassis power supply controller is connected to the body control module (BCM) to achieve redundant control of the power supply to the chassis system.

[0017] The second aspect of this invention discloses a power management method for an electric vehicle, which is applied in the power management system for an electric vehicle described in the first aspect. The method for achieving seamless power-on / off control of the vehicle includes:

[0018] After the vehicle is authenticated by the smart remote key or Bluetooth digital key, it is in the unlocked state. The vehicle domain controller (VDC) recognizes the user's door opening action and controls the high-voltage and low-voltage electrical appliances to be powered on.

[0019] When the user applies the brake and shifts gears, indicating a need to drive, the vehicle domain controller (VDC) sends a key authentication request to the body control module (BCM) and the Bluetooth control module (BLU) simultaneously via CAN communication. If the authentication is successful, the vehicle directly enters the "Ready" state. If the authentication fails, the user is prompted to check if the key is inside the vehicle.

[0020] After the user opens the door and leaves the vehicle, they can enter the mobile APP through the door handle without a key and send a request to lock the vehicle and power off. The vehicle domain controller (VDC) will then execute the lock and power off action or only power off action based on the vehicle status sent by the body controller (BCM).

[0021] According to a second aspect of the present invention, the method for implementing power-down control based on user action timeout includes:

[0022] For situations where users forget to lock and power on their vehicles after leaving the premises,

[0023] The vehicle domain controller (VDC) determines whether the user has left the vehicle based on the vehicle's driving status, seat sensor status, door switch signal, charging status, air conditioning and MP5 operation status.

[0024] If the vehicle domain controller (VDC) detects that the user has not taken any action within a first preset time, it will actively initiate a key authentication request. If it determines that the key is not in the vehicle, it will prompt the instrument panel that the vehicle is about to be turned off and ask whether the user wants to exit.

[0025] If no user operation or confirmation feedback is received, after a second preset delay, the vehicle domain controller (VDC) will initiate a key authentication request again. If it is determined that the key is not in the vehicle, the remote intelligent control terminal (TBOX) will remotely upload the information to the mobile APP to prompt the user that the vehicle is not powered off and ask them to confirm whether to lock and power off the vehicle. The vehicle will enter sleep mode after a first preset time. If no user feedback is received, the vehicle will be powered off and locked after a first preset time.

[0026] According to a second aspect of the present invention, the method for implementing power-down control in a vehicle fault state includes:

[0027] If the vehicle disconnects the high-voltage power supply due to system or battery failure, the vehicle domain controller (VDC) will control the vehicle to enter a low-power mode, provided that the user's preset requirements are met. At this time, the vehicle domain controller (VDC) will control the predefined low-voltage electrical appliances to shut down, so as to avoid the low-voltage battery from being depleted.

[0028] A third aspect of the present invention provides an electronic device, the device including a memory and a processor, the memory storing a computer program that, when executed by the processor, performs a method in an electric vehicle power management system as described in the first aspect of the present invention.

[0029] A fourth aspect of the present invention provides a storage medium storing a computer program that can be executed by one or more processors and can be used to implement a method in an electric vehicle power management system as described in the first aspect of the present invention.

[0030] According to the technical content disclosed in this invention, the following beneficial effects are achieved:

[0031] To achieve unified distribution of high and low voltage power supplies for the entire vehicle, and to control the branch power switches based on actual user needs, thereby ensuring optimal energy consumption of the entire vehicle system;

[0032] By monitoring user behavior, the system provides a way to disconnect the vehicle when the electric lock is not engaged, thus avoiding battery drain and property security issues caused by leaving the vehicle unlocked while powered on.

[0033] To avoid problems such as brake assist and steering assist failure caused by the failure of a single controller during vehicle operation.

[0034] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0036] Figure 1 This is a structural diagram of an electric vehicle power management system according to an embodiment;

[0037] Figure 2 This is a structural diagram of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0038] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0039] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0040] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0041] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0043] Example 1:

[0044] The first aspect of this invention discloses a power management system for an electric vehicle. Figure 1 This is a structural diagram of an electric vehicle power management system according to an embodiment of the present invention, specifically as follows: Figure 1As shown, the system includes: a vehicle domain controller (VDC), a remote intelligent control terminal (TBOX), a Bluetooth control module (BLU), a body controller (BCM), a high-voltage control unit, and a low-voltage control unit. The VDC independently controls the high-voltage power supply through the high-voltage control unit. The VDC controls the power supply to low-voltage electrical appliances through the low-voltage control unit. The TBOX, BLU, and BCM are connected to the VDC to achieve seamless power-on / off control, power-off control after user action timeout, and power-off control in case of vehicle malfunction. The high-voltage control unit includes: a main positive relay, a main negative relay, a pre-charge relay, a fast-charge positive relay, and a fast-charge negative relay. The VDC controls the high-voltage power supply through connections to these relays to achieve pre-charging and fast charging. The low-voltage control unit includes: an EV main control power supply controller, an air conditioning power supply controller, a body power supply controller, and a chassis power supply controller; the vehicle domain controller (VDC) is connected to the EV main control power supply controller to realize power supply control for the BMS and PCU controllers and components; the vehicle domain controller (VDC) is connected to the air conditioning power supply controller to realize power supply control for the vehicle thermal management system; the vehicle domain controller (VDC) is connected to the body power supply controller to realize power supply control for the body system and audio-visual entertainment system; the vehicle domain controller (VDC) is connected to the chassis power supply controller to realize power supply control for the EPB and EPS chassis systems.

[0045] In some embodiments, the chassis power supply controller is connected to the body control module (BCM) to achieve redundant control of the chassis system power supply. The control commands are uniformly managed by the vehicle domain controller (VDC). When the vehicle system meets the driving conditions, the chassis system power relay is enabled, and the control commands are simultaneously sent to the body control module (BCM) via CAN communication to achieve power supply redundancy. This effectively reduces the risk of power steering and brake assist failures caused by the failure of a single controller power supply control loop during vehicle operation.

[0046] This embodiment provides an electric vehicle power management system that enables unified distribution of high and low voltage power to the entire vehicle, controls branch power switches based on user needs to ensure optimal energy consumption of the entire vehicle system, and increases system scalability, providing an effective control interface for future OTA upgrades.

[0047] Example 2:

[0048] The second aspect of this invention discloses a method for managing the power supply of an electric vehicle, which is applied in the electric vehicle power supply management system disclosed in the first aspect of this invention. The method for achieving seamless power-on / off control of the vehicle includes:

[0049] After the vehicle is authenticated by the smart remote key or Bluetooth digital key, it is in the unlocked state. The vehicle domain controller (VDC) recognizes the user's door opening action and controls the high-voltage and low-voltage electrical appliances to be powered on.

[0050] When the user applies the brake and shifts gears, indicating a need to drive, the vehicle domain controller (VDC) sends a key authentication request to the body controller (BCM) and Bluetooth control module (BLU) simultaneously via CAN communication (encrypted communication data). If the authentication is successful, the vehicle directly enters the "Ready" state. If the authentication fails, the user is prompted to check if the key is inside the vehicle.

[0051] After the user opens the door and leaves the car, they can enter the mobile APP without a key through the door handle and send a request to lock the car and power off. The vehicle domain controller (VDC) will then perform the lock and power off action or only power off action based on the vehicle status sent by the body controller (BCM).

[0052] Compared to traditional control schemes, this scheme shifts the control core from the BCM to the VDC, and can also eliminate the original vehicle's one-button start switch, reducing system costs.

[0053] In some embodiments, the method for implementing power-down control based on user action timeout includes:

[0054] For situations where users forget to lock and power on their vehicles after leaving the premises,

[0055] The vehicle domain controller (VDC) determines whether the user has left the vehicle based on the vehicle's driving status, seat sensor status, door switch signal, charging status, air conditioning and MP5 operation status.

[0056] If the vehicle domain controller (VDC) detects that the user has not taken any action within a first preset time, it will actively initiate a key authentication request. If it determines that the key is not in the vehicle, it will prompt the instrument panel that the vehicle is about to be turned off and ask whether the user wants to exit.

[0057] If no user operation or confirmation feedback is received, after a second preset delay, the vehicle domain controller (VDC) will initiate a key authentication request again. If it is determined that the key is not in the vehicle, the remote intelligent control terminal (TBOX) will remotely upload the information to the mobile APP to prompt the user that the vehicle is not powered off and ask them to confirm whether to lock and power off the vehicle. The vehicle will enter sleep mode after a first preset time. If no user feedback is received, the vehicle will be powered off and locked after a first preset time.

[0058] In some embodiments, the method for implementing power-down control in a vehicle fault state includes:

[0059] If the vehicle disconnects the high-voltage power supply due to system or battery failure, the vehicle domain controller (VDC) will control the vehicle to enter a low-power mode, provided that the user's preset requirements are met. At this time, the vehicle domain controller (VDC) will control the predefined low-voltage electrical appliances (related non-execution low-voltage electrical appliances) to shut down, so as to avoid the low-voltage battery from being depleted.

[0060] In summary, the technical solutions of this invention have the following advantages compared with the prior art:

[0061] To achieve unified distribution of high and low voltage power supplies for the entire vehicle, and to control the branch power switches based on actual user needs, thereby ensuring optimal energy consumption of the entire vehicle system;

[0062] By monitoring user behavior, the system provides a way to disconnect the vehicle when the electric lock is not engaged, thus avoiding battery drain and property security issues caused by leaving the vehicle unlocked while powered on.

[0063] To avoid problems such as brake assist and steering assist failure caused by the failure of a single controller during vehicle operation.

[0064] Example 3:

[0065] The third aspect of the present invention discloses an electronic device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of the electric vehicle power management method of any one of the first aspects of the present invention.

[0066] Figure 2 This is a structural diagram of an electronic device according to an embodiment of the present invention, such as... Figure 2 As shown, the electronic device includes a processor, memory, communication interface, display screen, and input device connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, Near Field Communication (NFC), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input device can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the device's casing, or an external keyboard, touchpad, or mouse.

[0067] Those skilled in the art will understand that Figure 2The structure shown is merely a structural diagram of the part related to the technical solution of this disclosure and does not constitute a limitation on the electronic device to which the solution of this application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0068] Example 4:

[0069] The fourth aspect of the present invention discloses a storage medium, specifically relating to a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of the electric vehicle power management method of any one of the first aspects of the present invention.

[0070] Please note that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0071] The embodiments of the subject matter and functional operation described in this specification can be implemented in the following ways: digital electronic circuits, tangibly embodied computer software or firmware, computer hardware including the structures disclosed in this specification and their structural equivalents, or combinations thereof. Embodiments of the subject matter described in this specification can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a tangible, non-transitory program carrier for execution by a data processing apparatus or for controlling the operation of a data processing apparatus. Alternatively or additionally, the program instructions may be encoded on artificially generated propagation signals, such as machine-generated electrical, optical, or electromagnetic signals, which are generated to encode information and transmit it to a suitable receiving device for execution by the data processing apparatus. The computer storage medium may be a machine-readable storage device, a machine-readable storage substrate, a random or serial access memory device, or combinations thereof.

[0072] The processing and logic flow described in this specification can be executed by one or more programmable computers that execute one or more computer programs to perform corresponding functions by operating on input data and generating output. The processing and logic flow can also be executed by dedicated logic circuitry—such as FPGAs (Field-Programmable Gate Arrays) or ASICs (Application-Specific Integrated Circuits), and the device can also be implemented as dedicated logic circuitry.

[0073] Suitable computers for executing computer programs include, for example, general-purpose and / or special-purpose microprocessors, or any other type of central processing unit. Typically, the central processing unit receives instructions and data from read-only memory and / or random access memory. The basic components of a computer include a central processing unit for implementing or executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include one or more mass storage devices for storing data, such as disks, magneto-optical disks, or optical disks, or the computer will be operatively coupled to such mass storage devices to receive data from or transfer data to them, or both. However, a computer is not required to have such devices. Furthermore, a computer can be embedded in another device, such as a mobile phone, a personal digital assistant (PDA), a mobile audio or video player, a game console, a global positioning system (GPS) receiver, or a portable storage device such as a universal serial bus (USB) flash drive, to name a few.

[0074] Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, such as semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal hard disks or removable disks), magneto-optical disks, and CD-ROM and DVD-ROM disks. Processors and memory may be supplemented by or incorporated into dedicated logic circuitry.

[0075] While this specification contains numerous specific implementation details, these should not be construed as limiting the scope of any invention or the scope of the claims, but rather are primarily intended to describe features of specific embodiments of a particular invention. Certain features described in the various embodiments herein may also be implemented in combination in a single embodiment. Conversely, various features described in a single embodiment may also be implemented separately in various embodiments or in any suitable sub-combination. Furthermore, while features may function in certain combinations as described above and even initially claimed in this way, one or more features from a claimed combination may be removed from that combination in some cases, and a claimed combination may refer to a sub-combination or a variation thereof.

[0076] Similarly, although the operations are depicted in a specific order in the accompanying drawings, this should not be construed as requiring these operations to be performed in the specific order shown or sequentially, or requiring all illustrated operations to be performed to achieve the desired result. In some cases, multitasking and parallel processing may be advantageous. Furthermore, the separation of various system modules and components in the above embodiments should not be construed as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

[0077] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims may be performed in a different order and still achieve the desired result. Furthermore, the processes depicted in the drawings are not necessarily shown in a specific order or sequence to achieve the desired result. In some implementations, multitasking and parallel processing may be advantageous.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0079] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A power management system for an electric vehicle, characterized in that, The system includes: a vehicle domain controller (VDC), a remote intelligent control terminal (TBOX), a Bluetooth control module (BLU), a body controller (BCM), a high-voltage control unit, and a low-voltage control unit; The vehicle domain controller (VDC) independently controls the high-voltage power supply by controlling the high-voltage control unit. The vehicle domain controller (VDC) controls the power supply to low-voltage electrical appliances by controlling the low-voltage control unit. The remote intelligent control terminal TBOX, Bluetooth control module BLU, and body controller BCM are respectively connected to the vehicle domain controller VDC to realize seamless power-on / off control of the vehicle, power-off control due to user action timeout, and power-off control in the event of a vehicle malfunction. The vehicle domain controller (VDC) is used for: after the vehicle is in an unlocked state, upon detecting a user opening the door, controlling the high-voltage control unit to power on high-voltage electrical appliances and controlling the low-voltage control unit to power on low-voltage electrical appliances; when the user applies the brakes and shifts gears, indicating a need to drive, simultaneously sending a key authentication request to the body control module (BCM) and the Bluetooth control module (BLU), and after successful authentication, controlling the vehicle to directly enter the Ready state; after the user opens the door and leaves the vehicle, based on the vehicle status sent by the body control module (BCM), performing a locking and power-off action or simply power-off action.

2. The electric vehicle power management system according to claim 1, characterized in that, The high-voltage control unit includes: a main positive relay, a main negative relay, a pre-charge relay, a fast-charge positive relay, and a fast-charge negative relay; The vehicle domain controller (VDC) controls the high-voltage power supply by connecting to the main positive relay, main negative relay, pre-charge relay, fast-charge positive relay, and fast-charge negative relay, enabling pre-charging and fast charging.

3. The electric vehicle power management system according to claim 1, characterized in that, The low-voltage control unit includes: EV main control power supply controller, air conditioning power supply controller, body power supply controller and chassis power supply controller; The vehicle domain controller (VDC) is connected to the EV main power supply controller to realize power supply control of the BMS, PCU controller and overall components; The vehicle domain controller (VDC) is connected to the air conditioning power supply controller to realize the power supply control of the vehicle thermal management system. The vehicle domain controller (VDC) is connected to the body power supply controller to realize power supply control of the body system and audio-visual entertainment system. The vehicle domain controller (VDC) is connected to the chassis power supply controller to realize power supply control of the EPB and EPS chassis systems.

4. The electric vehicle power management system according to claim 3, characterized in that, The chassis power supply controller is connected to the body control module (BCM) to achieve redundant control of the power supply to the chassis system.

5. A method for managing the power supply of an electric vehicle, wherein the method is applied to the electric vehicle power management system according to any one of claims 1-4, characterized in that, Methods for achieving seamless power-on / off control of vehicles include: After the vehicle is authenticated by the smart remote key or Bluetooth digital key, it is in the unlocked state. The vehicle domain controller (VDC) recognizes the user's door opening action and controls the high-voltage and low-voltage electrical appliances to be powered on. When the user applies the brake and shifts gears, indicating a need to drive, the vehicle domain controller (VDC) simultaneously sends a key authentication request to the body control module (BCM) and the Bluetooth control module (BLU) via CAN communication. If the authentication is successful, the vehicle directly enters the Ready state. If the authentication fails, the user is prompted to check if the key is inside the vehicle. After the user opens the door and leaves the vehicle, they can enter the mobile APP through the door handle without a key and send a request to lock the vehicle and power off. The vehicle domain controller (VDC) will then execute the lock and power off action or only power off action based on the vehicle status sent by the body controller (BCM).

6. The electric vehicle power management method according to claim 5, characterized in that, Methods for implementing power-down control based on user action timeout include: For situations where users forget to lock and power on their vehicles after leaving the premises, The vehicle domain controller (VDC) determines whether the user has left the vehicle based on the vehicle's driving status, seat sensor status, door switch signal, charging status, air conditioning and MP5 operation status. If the vehicle domain controller (VDC) detects that the user has not taken any action within a first preset time, it will actively initiate a key authentication request. If it determines that the key is not in the vehicle, it will prompt the instrument panel that the vehicle is about to be turned off and ask whether the user wants to exit. If no user operation or confirmation feedback is received, after a second preset delay, the vehicle domain controller (VDC) will initiate a key authentication request again. If it is determined that the key is not in the vehicle, the remote intelligent control terminal (TBOX) will remotely upload the information to the mobile APP to prompt the user that the vehicle is not powered off and ask them to confirm whether to lock and power off the vehicle. The vehicle will enter sleep mode after a first preset time. If no user feedback is received, the vehicle will be powered off and locked after a first preset time.

7. The electric vehicle power management method according to claim 5, characterized in that, Methods for implementing power-down control in vehicle fault conditions include: If the vehicle disconnects the high-voltage power supply due to system or battery failure, the vehicle domain controller (VDC) will control the vehicle to enter a low-power mode, provided that the user's preset requirements are met. At this time, the vehicle domain controller (VDC) will control the predefined low-voltage electrical appliances to shut down.

8. An electronic device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program, which, when executed by the processor, performs a power management method for an electric vehicle as described in any one of claims 5 to 7.

9. A storage medium, characterized in that, The computer program stored in the storage medium can be executed by one or more processors and can be used to implement an electric vehicle power management method as described in any one of claims 5 to 7.

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