High-voltage power-on and power-off method, device and equipment for vehicle and storage medium

Abstract

The invention relates to the technical field of vehicle control, and discloses a high-voltage power-on and power-off method, device and equipment of a vehicle and a storage medium. After high-voltage power-on of the vehicle is completed, whether the vehicle has a whole vehicle fault or a BMS fault or not is detected; if yes, the whole vehicle fault level, the BMS fault level and the gear state of the vehicle are detected; and according to the whole vehicle fault level and the gear state, the vehicle is controlled to be in a high-voltage power-off state or kept in a high-voltage power-on state, and according to the BMS fault level and the gear state, the vehicle is controlled to be in a high-voltage power-off state or kept in a high-voltage power-on state. By applying the technical scheme, the problems of low stability and reliability of high-voltage power-on and power-off of the vehicle under different conditions can be solved, and the driving experience and the driving safety of a user are improved.

Description

Technical Field

[0001] The present application relates to the field of automobile control technology, and in particular to a method, device, equipment and computer-readable storage medium for high-voltage power on and off of a vehicle. Background Art

[0002] The high-voltage power-on and power-off functions of electric vehicles are one of the basic core functions of the vehicle. The control of the high-voltage power-on and power-off of electric vehicles will affect the basic working performance of the vehicle's power system and the high-voltage safety of the vehicle. The high-voltage power-on and power-off process requires high-voltage components such as the vehicle controller and battery management system to interact with each other in a certain sequence to complete the high-voltage energy output of the vehicle. The power-on and power-off process is complex.

[0003] However, during the use of the vehicle, there are many types of faults in different scenarios and conditions. The stability and reliability of the vehicle's high-voltage power supply may be low, which reduces the user's driving experience and driving safety. Summary of the invention

[0004] In view of the above problems, the present application provides a method, device, equipment and computer-readable storage medium for high-voltage power on and off of a vehicle, which solves the problem of low stability and reliability of high-voltage power on and off of the vehicle under different circumstances, and improves the user's driving experience and driving safety.

[0005] According to one aspect of an embodiment of the present application, a method for high-voltage power on and off of a vehicle is provided, the method comprising:

[0006] responding to a high voltage power-on command of the vehicle;

[0007] After the vehicle is powered on at high voltage, detecting whether the vehicle has a vehicle fault or a BMS fault;

[0008] If yes, then detecting the vehicle fault level, BMS fault level and gear status of the vehicle;

[0009] The vehicle high voltage is controlled to be powered off or maintained in the high voltage powered on state according to the vehicle fault level and the gear state, and the vehicle high voltage is controlled to be powered off or maintained in the high voltage powered on state according to the BMS fault level and the gear state.

[0010] In an optional exemplary embodiment, the vehicle fault level includes a first-level vehicle fault, a second-level vehicle fault, and a third-level vehicle fault;

[0011] Controlling the vehicle high voltage to be powered off or to be powered on according to the vehicle fault level and the gear state further includes:

[0012] If the vehicle fault level of the vehicle is a first-level vehicle fault, controlling the vehicle to maintain a high-voltage power-on state;

[0013] If the vehicle fault level is a level 2 vehicle fault and the gear state is the parking gear, sending a first high-voltage power-off instruction to control the vehicle to execute fault power-off;

[0014] If the vehicle fault level of the vehicle is a level 2 vehicle fault and the gear state is a driving gear, sending a second high-voltage power-off instruction to control the vehicle to perform a delayed power-off;

[0015] If the vehicle fault level of the vehicle is a level 3 vehicle fault, a third high-voltage power-off instruction is sent to control the vehicle to perform an emergency power-off.

[0016] In an optional exemplary embodiment, the BMS fault level includes a primary BMS fault, a secondary BMS fault, and a tertiary BMS fault;

[0017] The controlling the vehicle high voltage to be powered off or to be powered on according to the BMS fault level and the gear state further includes:

[0018] If the BMS fault level of the vehicle is a primary BMS fault, controlling the vehicle to maintain a high voltage power-on state;

[0019] If the BMS fault level of the vehicle is a level 2 BMS fault and the gear state is the parking gear, sending a fourth high-voltage power-off instruction to control the vehicle to execute a fault power-off;

[0020] If the BMS fault level of the vehicle is a secondary BMS fault and the gear state is a driving gear, sending a fifth high-voltage power-off instruction to control the vehicle to perform a delayed power-off;

[0021] If the BMS fault level of the vehicle is a level 3 BMS fault, a sixth high-voltage power-off instruction is sent to control the vehicle to perform emergency power-off.

[0022] In an optional exemplary embodiment, the method further includes:

[0023] If the BMS fault level of the vehicle is a level 2 BMS fault, detecting whether the BMS receives the fourth high voltage power-off instruction;

[0024] If not, when a first preset time is reached since the fourth high-voltage power-off instruction is sent, the vehicle is controlled to execute the high-voltage power-off of the entire vehicle.

[0025] In an optional exemplary embodiment, the method further includes:

[0026] If the BMS fault level of the vehicle is a level 3 BMS fault, detecting whether the BMS receives the sixth high voltage power-off instruction;

[0027] If not, when a second preset time is reached since the sixth high-voltage power-off instruction is sent, the vehicle is controlled to execute high-voltage power-off of the entire vehicle.

[0028] In an optional exemplary embodiment, after detecting whether the vehicle has a vehicle fault or a BMS fault, the method further includes:

[0029] If not, the vehicle is controlled to maintain a high voltage powered state.

[0030] In an optional exemplary embodiment, the method further includes:

[0031] After the vehicle high voltage is powered off, if the vehicle whole vehicle fault level is greater than or equal to the whole vehicle fault preset level, or the vehicle BMS fault level is greater than or equal to the BMS fault preset level, the vehicle high voltage is prohibited from being powered on before the vehicle whole vehicle fault and / or the BMS fault are cleared.

[0032] In an optional exemplary embodiment, before responding to the high voltage power-on instruction of the vehicle, the method further includes:

[0033] After detecting the vehicle's unlocking signal, wake up the vehicle network;

[0034] Controlling the vehicle to perform a self-check to detect whether the vehicle has a vehicle fault or a BMS fault;

[0035] If not, sending a high voltage power-on instruction to control the high voltage power-on of the vehicle;

[0036] If so, a high-voltage power-on command is sent to control the vehicle to be powered on at high voltage, or a low-voltage power-off command is sent to control the vehicle to be powered off at low voltage, according to the vehicle fault level and the BMS fault level.

[0037] In an optional exemplary embodiment, sending a high-voltage power-on instruction to control the vehicle to be powered on at high voltage or sending a low-voltage power-off instruction to control the vehicle to be powered off at low voltage according to the vehicle fault level and the BMS fault level of the vehicle further includes:

[0038] If the vehicle fault level of the vehicle is less than the preset vehicle fault level, or the BMS fault level of the vehicle is less than the preset BMS fault level, a high-voltage power-on instruction is sent to control the high-voltage power-on of the vehicle;

[0039] If the vehicle fault level of the vehicle is greater than or equal to the preset vehicle fault level, or the BMS fault level of the vehicle is greater than or equal to the preset BMS fault level, a low voltage power-off instruction is sent to control the vehicle to power off at low voltage.

[0040] According to another aspect of an embodiment of the present application, a high-voltage power-on and power-off device for a vehicle is provided, the device comprising:

[0041] A response module, used for responding to a high voltage power-on instruction of the vehicle;

[0042] A detection module, used for detecting whether the vehicle has a vehicle fault or a BMS fault after the vehicle is powered on at high voltage;

[0043] If yes, then detecting the vehicle fault level, BMS fault level and gear status of the vehicle;

[0044] A control module is used to control the vehicle high voltage to be powered off or to maintain the high voltage powered on state according to the vehicle fault level and the gear state, and to control the vehicle high voltage to be powered off or to maintain the high voltage powered on state according to the BMS fault level and the gear state.

[0045] According to another aspect of an embodiment of the present application, there is provided an electronic device, including:

[0046] Controller;

[0047] The memory is used to store one or more programs. When the one or more programs are executed by the controller, the controller implements the above-mentioned high-voltage power-on and power-off method of the vehicle.

[0048] According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which at least one executable instruction is stored. When the executable instruction is executed on the high-voltage power-on and power-off device / equipment of a vehicle, the high-voltage power-on and power-off device / equipment of the vehicle performs the operation of the high-voltage power-on and power-off method of the vehicle as described above.

[0049] In the embodiment of the present application, the high-voltage power-on and power-off method of the vehicle responds to the high-voltage power-on instruction of the vehicle, and after the high-voltage power-on of the vehicle is completed, the vehicle is fault-detected to detect whether the vehicle has a whole vehicle fault or a BMS fault; if the whole vehicle fault is detected, the whole vehicle fault level and gear state of the vehicle are detected, and the vehicle high voltage power-off or high voltage power-on state is controlled according to the whole vehicle fault level and gear state; if the vehicle has a BMS fault, the BMS fault level and gear state of the vehicle are detected, and the vehicle high voltage power-off or high voltage power-on state is controlled according to the BMS fault level and gear state. Through the technical solution of the present application, while giving priority to driving safety, the different faults of the whole vehicle and BMS of the vehicle are targetedly handled, which solves the problem of low stability and reliability of the high-voltage power-on and power-off of the vehicle under different circumstances, and improves the driving experience and driving safety of users.

[0050] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0052] Figure 1 A schematic diagram showing a flow chart of an embodiment of a high voltage power on and off method for a vehicle provided by the present application;

[0053] Figure 2 Shows Figure 1 A flowchart of step 400 of an embodiment of a method for turning on and off high voltage power of a vehicle;

[0054] Figure 3 Shows Figure 1 A flowchart of another embodiment of step 400 of a method for high voltage power on and off of a vehicle;

[0055] Figure 4 A schematic structural diagram of an embodiment of a high-voltage power up and down device for a vehicle provided by the present application is shown;

[0056] Figure 5 A schematic structural diagram of an embodiment of an electronic device provided by the present application is shown. DETAILED DESCRIPTION

[0057] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0058] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0059] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0060] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0061] First of all, it should be noted that the control of the high-voltage power on and off of electric vehicles will affect the basic working performance of the vehicle's power system and the high-voltage safety of the vehicle. The high-voltage power on and off process requires the vehicle controller to control and coordinate the vehicle's power-related components to complete the power on and off process according to the preset strategy. The power on and off process is complicated. During the use of the vehicle, there are many types of faults in different scenarios and states, and there may be problems with the stability and reliability of the vehicle's high-voltage power on and off.

[0062] To solve the above problems, please refer to Figure 1 , the present application exemplarily shows a flow chart of a high voltage power-on and power-off method for a vehicle.

[0063] Among them, the execution subject of the high-voltage power-on and power-off method of the vehicle can be a terminal device or a server or other processing device, wherein the terminal device can be a user equipment (User Equipment, UE), a computer, a mobile device, a user terminal, a terminal, a cellular phone, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device, a computing device, a vehicle-mounted device, a wearable device, etc. The execution subject of the high-voltage power-on and power-off method of the vehicle can also be a car. In some possible implementations, the high-voltage power-on and power-off method of the vehicle can be implemented by a processor calling a computer-readable instruction stored in a memory.

[0064] Specifically, the high voltage power on and off method of the vehicle of this embodiment can be executed by the vehicle, and includes the following steps:

[0065] Step 100, responding to a high voltage power-on instruction of the vehicle;

[0066] Among them, usually when the vehicle is started or charged, it is necessary to power up the internal on-board high-voltage devices with high voltage, that is, to load the high voltage of the power battery onto the on-board high-voltage devices. Generally, considering that most on-board high-voltage devices are capacitive loads, if the high voltage of the power battery is directly loaded onto the device, it is easy to cause damage to the device or even burn the power battery-related devices. Therefore, when the high voltage is powered on, the high voltage of the power battery needs to be slowly loaded onto the on-board high-voltage devices.

[0067] The high-voltage power-on process will be triggered after the vehicle controller receives a valid wake-up request. The valid wake-up request can be a key, a specific network management message, a charging signal, etc., which is a high-voltage power-on command issued when the vehicle is unlocked. Before issuing the high-voltage power-on command, it is necessary to wake up the vehicle's network first, and complete the vehicle's related self-test initialization and other processes through the vehicle controller before sending the high-voltage power-on command to other high-voltage components of the vehicle. After receiving the high-voltage power-on command from the vehicle controller, the high-voltage battery pack controller, motor controller, DC converter, etc. will complete the initialization within the specified time and feedback the initialization results to the vehicle controller.

[0068] It should be noted that controlling the high-voltage power-on of the vehicle specifically means controlling the vehicle's BMS to turn on the high-voltage relay. The vehicle's BMS includes the positive and negative electrodes of the power battery, the main negative relay, the main positive relay, the pre-charge relay, and the pre-charge resistor. The main negative relay, the main positive relay, and the pre-charge relay are called the main relays of the BMS. During the high-voltage power-on process of the vehicle, the main negative relay, the main positive relay, and the pre-charge relay will be controlled to close in turn.

[0069] In an exemplary embodiment, before the step of responding to the high voltage power-on instruction of the vehicle, the method further includes:

[0070] After detecting the vehicle's unlocking signal, the entire vehicle network is woken up.

[0071] The vehicle unlocking signal may come from the vehicle remote control key, terminal key, card key, mechanical key, etc., which are not specifically limited here. After detecting the vehicle unlocking signal, the vehicle is in a low-voltage power-on state. At this time, the vehicle network is awakened by low-voltage power supply to facilitate subsequent self-checks of vehicle faults, BMS faults, etc.

[0072] Controlling the vehicle to perform a self-check to detect whether the vehicle has a vehicle fault or a BMS fault;

[0073] Among them, BMS (Battery Management System) is a collection of software and hardware, including sensors, central processing units, actuators, etc. BMS obtains the status information of the battery cells through sensors throughout the battery pack, and transmits this status information to the central processing unit, which processes it, and processes and executes the feedback information through the actuator, adjusts the battery status to make it in a suitable working environment and safety environment, and meets the power requirements of the vehicle. BMS mainly plays the role of real-time monitoring of vehicle battery status, battery safety protection, battery energy management, communication and fault diagnosis.

[0074] The vehicle failure and BMS failure are set according to the actual application situation and are not specifically restricted here; for example, the vehicle failure may include motor failure resulting in power degradation, air conditioning failure resulting in failure to cool or heat, generator failure, extended range start prohibition failure, external discharge failure, high-voltage interlock failure, static insulation failure, collision safety failure, thermal runaway failure, etc.; BMS failure may include BMS wiring harness failure, SOC too low failure, relay adhesion failure, pre-charge short circuit failure, high-voltage interlock failure, insulation failure, thermal runaway failure, BMS overcurrent failure, BMS overvoltage failure, etc.

[0075] If not, sending a high voltage power-on instruction to control the high voltage power-on of the vehicle;

[0076] If so, a high-voltage power-on command is sent to control the vehicle to be powered on at high voltage, or a low-voltage power-off command is sent to control the vehicle to be powered off at low voltage, according to the vehicle fault level and the BMS fault level.

[0077] In this embodiment, before the vehicle is powered on at high voltage, it is necessary to control the vehicle to unlock and wake up the vehicle network. After waking up the vehicle network, the vehicle faults and BMS faults of the vehicle are detected to determine whether the vehicle can be powered on at high voltage. Specifically, if it is detected that the vehicle does not have a motor fault that causes power degradation, an air conditioning fault that causes inability to cool or heat, a generator fault, a fault that prohibits extended-range start, an external discharge fault, a high-voltage interlock fault, a static insulation fault, a collision safety fault, a thermal runaway fault, a BMS harness fault, a SOC too low fault, a relay adhesion fault, a pre-charge short circuit fault, a high-voltage interlock fault, an insulation fault, a thermal runaway fault, a BMS overcurrent fault, a BMS overvoltage fault, etc., then a high-voltage power-on instruction is sent to the BMS to control the high-voltage relay in the BMS to close, so that the vehicle completes the high-voltage power-on.

[0078] On the contrary, if it is detected that the vehicle has a motor failure that causes power degradation, an air conditioning failure that causes the inability to cool or heat, a generator failure, a range-extended start-up prohibition failure, an external discharge failure, a high-voltage interlock failure, a static insulation failure, a collision safety failure, a vehicle failure in a thermal runaway failure, or a BMS harness failure, a SOC too low failure, a relay adhesion failure, a pre-charge short circuit failure, a high-voltage interlock failure, an insulation failure, a thermal runaway failure, a BMS overcurrent failure, or a BMS overvoltage failure, then the existing vehicle fault level and BMS fault level are further determined, and a high-voltage power-on command is sent to the BMS according to the vehicle's vehicle fault level and BMS fault level to control the high-voltage relay in the BMS to close, so that the vehicle completes high-voltage power-on; or a low-voltage power-off command is sent according to the vehicle's vehicle fault level and BMS fault level to control the vehicle to power off at low voltage. Through the technical solution of this embodiment, a self-check is performed before the vehicle is powered on at high voltage to avoid the occurrence of safety accidents caused by the vehicle continuing to power on at high voltage due to vehicle faults or BMS faults.

[0079] Further, if the vehicle fault level of the vehicle is less than the preset vehicle fault level, or the BMS fault level of the vehicle is less than the preset BMS fault level, a high-voltage power-on instruction is sent to control the high-voltage power-on of the vehicle;

[0080] If the vehicle fault level of the vehicle is greater than or equal to the preset vehicle fault level, or the BMS fault level of the vehicle is greater than or equal to the preset BMS fault level, a low voltage power-off instruction is sent to control the vehicle to power off at low voltage.

[0081] It should be noted that the vehicle failure levels include level zero vehicle failure, level one vehicle failure, level two vehicle failure and level three vehicle failure, and the BMS failure levels include level zero BMS failure, level one BMS failure, level two BMS failure and level three BMS failure.

[0082] In this embodiment, the preset level of vehicle fault and the preset level of BMS fault are set according to actual application conditions and are not specifically limited here; for example, the preset level of vehicle fault may be a level 2 vehicle fault, and the preset level of BMS fault may be a level 2 BMS fault.

[0083] For example, please refer to the following Table 1. If a vehicle fault is detected, and the fault level is less than the second-level vehicle fault, it means that the vehicle has no fault, or the vehicle has a fault that affects the user's driving experience and comfort, but does not affect the high-voltage power-on of the vehicle. At this time, a high-voltage power-on command is sent to the vehicle's BMS to control the high-voltage relay in the BMS to close, so that the vehicle completes high-voltage power-on. If a BMS fault is detected in the vehicle, and the BMS fault level is less than the second-level BMS fault, it means that the vehicle's BMS has no fault, or the performance of the BMS components is reduced and does not affect continued use. At this time, a high-voltage power-on command is sent to the vehicle's BMS to control the high-voltage relay in the BMS to close, so that the vehicle completes high-voltage power-on.

[0084]

[0085] Table 1

[0086] Please refer to the following Table 2. If a vehicle fault is detected, and the vehicle fault level is greater than or equal to the second-level vehicle fault, it means that the vehicle has a fault that causes the vehicle to be unused under special working conditions, or the vehicle has a fault that directly endangers the vehicle's driving safety and directly causes the vehicle to be unusable. Continuing to use it will directly cause a vehicle accident and endanger personal safety. At this time, high-voltage power-on is prohibited, and a low-voltage power-off command is sent to control the vehicle to power off at low voltage, and the vehicle enters a dormant state. If a BMS fault is detected in the vehicle, and the BMS fault level is greater than or equal to the second-level BMS fault, it means that the vehicle's BMS components cannot continue to be used, there are safety hazards, and continuing to use it will directly cause a vehicle accident and endanger personal safety. At this time, high-voltage power-on is prohibited, and a low-voltage power-off command is sent to control the vehicle to power off at low voltage, and the vehicle enters a dormant state.

[0087]

[0088] Table 2

[0089] Through the technical solution of this embodiment, a self-check is performed before the vehicle is powered on at high voltage, thereby avoiding safety hazards that may be caused by continuing to power on at high voltage due to vehicle failure or BMS failure, as well as vehicle accidents that directly endanger personal safety.

[0090] Step 200, after the vehicle is powered on with high voltage, detect whether the vehicle has a vehicle fault or a BMS fault.

[0091] Among them, after the vehicle completes self-inspection and confirms that the vehicle has no vehicle faults or BMS faults that prohibit high-voltage power-on, high-voltage power-on is completed. It should be noted that after the vehicle completes high-voltage power-on, the vehicle will continue to perform real-time detection of vehicle faults and BMS faults to determine whether the vehicle has a vehicle fault or BMS fault during use, thereby ensuring the safety and reliability of the vehicle at all times.

[0092] Step 300: If yes, then detect the vehicle fault level, BMS fault level and gear status of the vehicle.

[0093] Step 400, controlling the vehicle high voltage to be powered off or to be kept powered on according to the vehicle fault level and the gear status, and controlling the vehicle high voltage to be powered off or to be kept powered on according to the BMS fault level and the gear status.

[0094] In this embodiment, if a vehicle fault or a BMS fault is detected during the use of the vehicle, the vehicle fault level or the BMS fault level is further judged so that the vehicle can execute corresponding control instructions according to different vehicle fault levels or BMS fault levels, such as controlling the vehicle high voltage to power off or keep the high voltage powered on, so as to ensure the safety of the vehicle; at the same time, it will also be judged whether the vehicle is in the driving process to determine whether the vehicle is in the parking gear (P gear), so as to give priority to ensuring user safety and vehicle driving safety.

[0095] It should be noted that, in the above embodiment, after the vehicle high voltage is powered off, if the vehicle fault level of the vehicle is greater than or equal to the vehicle fault preset level, or the vehicle BMS fault level is greater than or equal to the BMS fault preset level, then before the vehicle fault and / or the BMS fault of the vehicle are cleared, the vehicle high voltage is prohibited from being powered on. Exemplarily, because the vehicle has a vehicle fault, and the vehicle fault level is greater than or equal to the second-level vehicle fault, or the vehicle has a BMS fault, and the BMS fault level is greater than or equal to the second-level BMS fault, it is necessary to control the vehicle high voltage to be powered off. After the vehicle high voltage is powered off, the vehicle fault or BMS fault in the vehicle is checked and processed. If the vehicle fault or BMS fault in the vehicle has not been cleared, the vehicle high voltage is prohibited from being powered on, thereby avoiding the safety hazard caused by the high voltage power-on at this time.

[0096] Through the above technical solution of the present application, during the high-voltage power-on and power-off process of the whole vehicle, the VCU (vehicle Control Unit) detects in real time whether the vehicle meets the high-voltage power-on and power-off conditions and sends relevant control instructions. The BMS responds to the high-voltage power-on and power-off instructions of the VCU by disconnecting or closing the high-voltage relay; during the driving process of the vehicle, the VCU detects the fault conditions of the whole vehicle in real time, and the BMS also monitors the temperature, voltage, current and other real-time parameters of the battery in real time to ensure the safety of the vehicle. Therefore, the embodiment of the present application realizes the high-voltage power-on and power-off control of the vehicle by judging the fault state and fault type of the whole vehicle fault and the BMS fault, thereby improving the reliability of the vehicle power-on and power-off, thereby achieving multiple protections for the driver and passengers and improving the safety and reliability of the vehicle.

[0097] In an exemplary embodiment, see Figure 2 As shown, the specific technical solution for the vehicle when there is a vehicle failure is:

[0098] Step 410, if the vehicle fault level of the vehicle is a level 1 vehicle fault, controlling the vehicle to maintain a high voltage powered state;

[0099] Step 411, if the vehicle fault level is a level 2 vehicle fault and the gear state is a parking gear, sending a first high-voltage power-off instruction to control the vehicle to execute a fault power-off;

[0100] Step 412: If the vehicle fault level is a level 2 vehicle fault and the gear state is a driving gear, a second high-voltage power-off instruction is sent to control the vehicle to perform a delayed power-off;

[0101] Step 413: If the vehicle fault level of the vehicle is a level 3 vehicle fault, a third high-voltage power-off instruction is sent to control the vehicle to perform an emergency power-off.

[0102] It should be noted that, please refer to the following Table 3. Level 0 vehicle failure means that the vehicle has no faults and can be used normally; Level 1 vehicle failure includes motor failure resulting in power degradation, air conditioning failure resulting in failure to cool or heat, generator failure, extended range start prohibition failure, external discharge failure, etc.; Level 2 vehicle failure includes high-voltage interlock failure, static insulation failure, etc.; Level 3 vehicle failure includes collision safety failure, thermal runaway failure, etc.

[0103] In this embodiment, if the vehicle fault level is detected to be a level one vehicle fault, it means that the vehicle may have a motor fault resulting in power degradation, an air conditioning fault resulting in failure to cool or heat, a generator fault, a range-extended start-up prohibition fault, an external discharge fault, etc. Although the existing vehicle fault at this time affects the user's driving experience and comfort, it does not affect the high-voltage power on and off of the vehicle, and the vehicle can still be kept in a high-voltage power-on state. The corresponding functions are limited according to the specific vehicle fault type, thereby ensuring the user's usage experience.

[0104] If the vehicle fault level is detected as a level 2 vehicle fault, it means that the vehicle may have a high-voltage interlock fault, a static insulation fault, etc. The existing vehicle fault at this time may cause a fault that the vehicle is not in use. In order to ensure the safety and reliability of the vehicle, it is necessary to further control the high-voltage power-off of the vehicle according to the gear position of the vehicle; if the vehicle gear is in the parking gear (P gear), the first high-voltage power-off command is directly sent to the BMS to control the high-voltage relay of the BMS to disconnect to complete the high-voltage power-off; if the vehicle gear is in a non-parking gear such as the forward gear (D gear), the reverse gear (R gear), the neutral gear (N gear), etc., the second high-voltage power-off command is sent to the BMS to control the high-voltage relay of the BMS to delay disconnection, that is, after the vehicle gear is switched to the parking gear, the high-voltage power-off is completed to ensure the safety of the vehicle during driving.

[0105] If the vehicle's fault level is detected to be a level three vehicle fault, it means that the vehicle may have a collision safety fault, a thermal runaway fault, etc. At this time, the existing vehicle fault directly endangers the driving safety of the vehicle and directly causes the vehicle to be unusable. Continuing to use it will directly cause a vehicle accident and endanger personal safety. It is necessary to send a third high-voltage power-off command to the BMS to control the high-voltage relay of the BMS to disconnect immediately, so that the vehicle can complete the emergency power-off, thereby powering off in time to ensure the safety of the user.

[0106]

[0107] Table 3

[0108] In the above embodiment, when the vehicle is detected to have a vehicle fault, the vehicle fault level is recorded, so that the maintenance staff can subsequently carry out targeted processing on the vehicle fault, so as to efficiently and conveniently solve the vehicle fault. After the vehicle is powered off due to a level 2 vehicle fault or a level 3 vehicle fault, the vehicle is prohibited from being powered on at high voltage until the vehicle fault is resolved, thereby avoiding the potential safety hazard caused by the high voltage power-on at this time.

[0109] In an exemplary embodiment, see Figure 3 As shown, the specific technical solution for the vehicle when there is a BMS failure is:

[0110] Step 420, if the BMS fault level of the vehicle is a primary BMS fault, controlling the vehicle to maintain a high voltage power-on state;

[0111] Step 421, if the BMS fault level of the vehicle is a level 2 BMS fault and the gear state is the parking gear, sending a fourth high-voltage power-off instruction to control the vehicle to execute a fault power-off;

[0112] Step 422: If the BMS fault level of the vehicle is a level 2 BMS fault and the gear state is a driving gear, a fifth high-voltage power-off instruction is sent to control the vehicle to perform a delayed power-off;

[0113] Step 423: If the BMS fault level of the vehicle is a level 3 BMS fault, a sixth high-voltage power-off instruction is sent to control the vehicle to perform an emergency power-off.

[0114] It should be noted that, please refer to the following Table 4. Level 0 BMS fault means that the vehicle has no fault and can be used normally; Level 1 BMS fault includes BMS wiring harness fault, SOC too low fault, etc.; Level 2 BMS fault includes relay adhesion fault, pre-charge short circuit fault, high-voltage interlock fault, insulation fault, etc.; Level 3 BMS fault includes thermal runaway fault, BMS overcurrent fault, BMS overvoltage fault, etc.

[0115] In this embodiment, if the vehicle's BMS fault level is detected to be a level one BMS fault, it means that the vehicle may have a BMS wiring harness fault, a SOC too low fault, etc. At this time, although the existing BMS fault reduces the performance of components, it does not affect the normal use of the vehicle, and the vehicle can still be kept in a high-voltage power-on state. It only limits the corresponding functions according to the specific BMS fault type, such as limiting BMS discharge and charging power, etc., thereby ensuring the safety of the vehicle and the user experience.

[0116] If the vehicle's BMS fault level is detected to be a secondary BMS fault, it means that the vehicle may have a relay adhesion fault, a pre-charge short circuit fault, a high-voltage interlock fault, an insulation fault, etc. The existing BMS fault at this time may cause the components to be unable to continue to be used, and there are certain safety hazards. In order to ensure the safety and reliability of the vehicle, it is necessary to further control the high-voltage power-off of the vehicle according to the vehicle's gear position; if the vehicle's gear position is in the parking gear (P gear), the fourth high-voltage power-off command is directly sent to the BMS to control the high-voltage relay of the BMS to disconnect to complete the high-voltage power-off; if the vehicle's gear position is in a non-parking gear such as the forward gear (D gear), the reverse gear (R gear), the neutral gear (N gear), etc., the fifth high-voltage power-off command is sent to the BMS to control the high-voltage relay of the BMS to delay disconnection, that is, after the vehicle gear position is switched to the parking gear, the high-voltage power-off is completed to ensure the safety of the vehicle during driving.

[0117] If the vehicle's BMS fault level is detected to be a level three BMS fault, it means that the vehicle may have a thermal runaway fault, a BMS overcurrent fault, a BMS overvoltage fault, etc. The existing BMS fault at this time will cause the components to be unable to continue to be used. Continuing to use will cause a vehicle accident and endanger personal safety. It is necessary to send the sixth high-voltage power-off command to the BMS to control the high-voltage relay of the BMS to disconnect immediately, so that the vehicle can complete the emergency power-off, thereby powering off in time to ensure the safety of users.

[0118]

[0119] Table 4

[0120] In the above embodiment, when a BMS fault is detected in the vehicle, the BMS fault level is recorded so that the maintenance staff can subsequently carry out targeted processing on the BMS fault in the vehicle, so as to efficiently and conveniently solve the BMS fault in the vehicle. After the vehicle is powered off at high voltage due to a secondary BMS fault or a tertiary BMS fault, the vehicle is prohibited from being powered on at high voltage until the BMS fault in the vehicle is resolved, thereby avoiding the potential safety hazard caused by the high voltage power-on at this time.

[0121] Further, if the BMS fault level of the vehicle is a level 2 BMS fault, detecting whether the BMS receives the fourth high voltage power-off instruction;

[0122] If not, when a first preset time is reached since the fourth high-voltage power-off instruction is sent, the vehicle is controlled to execute the high-voltage power-off of the entire vehicle.

[0123] The first preset duration is set according to the actual application scenario and is not specifically limited here. For example, in this embodiment, the first preset duration may be 30 seconds.

[0124] Exemplarily, when it is detected that the vehicle's BMS fault level is a secondary BMS fault and the vehicle gear is in the parking gear (P gear), it is necessary to send a fourth high-voltage power-off command to the BMS to control the high-voltage relay of the BMS to disconnect in order to complete the high-voltage power-off. However, when sending the fourth power-off command to the BMS, there is a situation where the BMS does not receive the fourth power-off command. If it is detected that the BMS has not received the fourth high-voltage power-off command, the timing starts when the vehicle sends the fourth high-voltage power-off command. If the timing reaches 30 seconds, the BMS is directly controlled to turn off the high-voltage relay by itself to complete the high-voltage power-off of the entire vehicle. Through this embodiment, the potential safety hazard that the vehicle's BMS does not receive the high-voltage power-off command, resulting in the vehicle being in a high-voltage power-on state, is avoided.

[0125] It should be noted that the BMS failing to receive the fourth high-voltage power-off command means that the vehicle's VCU sends the fourth high-voltage power-off command to the BMS, but the BMS fails to shut down the high-voltage relay, and the vehicle continues to be in the high-voltage power-on state. At this time, it indicates that the BMS has not received the fourth high-voltage power-off command.

[0126] Furthermore, when it is detected that the vehicle fault level is a secondary BMS fault, and the vehicle gear is in a non-parking gear such as the forward gear (D gear), reverse gear (R gear), neutral gear (N gear), etc., in order to ensure the driving safety of the vehicle, the high-voltage relay of the BMS is controlled to be disconnected based on the fifth high-voltage power-off instruction after the vehicle gear state is switched to the parking gear (P gear). At this time, if the vehicle gear state is switched to the parking gear (P gear) and the vehicle is safely parked, and the vehicle's BMS has not yet executed the fifth high-voltage power-off instruction to control the high-voltage relay to disconnect, the BMS is directly controlled to automatically shut down the high-voltage relay to complete the high-voltage power-off of the vehicle.

[0127] Further, if the BMS fault level of the vehicle is a level 3 BMS fault, detecting whether the BMS receives the sixth high-voltage power-off instruction;

[0128] If not, when a second preset time is reached since the sixth high-voltage power-off instruction is sent, the vehicle is controlled to execute high-voltage power-off of the entire vehicle.

[0129] The second preset time is shorter than the first preset time. The second preset time is set according to the actual application scenario and is not specifically limited here. However, when the vehicle's BMS fault level is a level 3 BMS fault, it indicates that the vehicle's BMS fault is serious and an emergency high voltage power-off is required. Therefore, the second preset time should not be too long. For example, in this embodiment, the second preset time may be 100 milliseconds.

[0130] Exemplarily, when it is detected that the vehicle's BMS fault level is a level 3 BMS fault, it is necessary to send a sixth high-voltage power-off instruction to the BMS to control the high-voltage relay of the BMS to disconnect in order to complete the high-voltage power-off. However, when sending the sixth power-off instruction to the BMS, there is a situation where the BMS cannot receive the sixth power-off instruction. If it is detected that the BMS has not received the sixth high-voltage power-off instruction, the timing starts when the vehicle sends the sixth high-voltage power-off instruction. If the timing reaches 100 milliseconds, the BMS is directly controlled to turn off the high-voltage relay by itself to complete the high-voltage power-off of the entire vehicle. Through this embodiment, the potential safety hazard that the vehicle's BMS does not receive the high-voltage power-off instruction, resulting in the vehicle being in a high-voltage power-on state for a long time, is avoided.

[0131] It should be noted that the BMS failing to receive the sixth high-voltage power-off command means that the vehicle's VCU sends the sixth high-voltage power-off command to the BMS, but the BMS fails to shut down the high-voltage relay, and the vehicle continues to be in the high-voltage power-on state. At this time, it indicates that the BMS has not received the sixth high-voltage power-off command.

[0132] In the above embodiment, when the vehicle is not in the parking gear (P gear), as long as there is no safety hazard to personnel (not VCU, power battery failure), the high voltage is not allowed to be powered off to ensure the safety of the vehicle, so as to avoid secondary damage caused by power interruption during the vehicle's driving; when the vehicle is not in the parking gear (P gear), the VCU or power battery fails, and the high voltage is delayed to be powered off, and the high voltage can be powered off only after the vehicle's driving safety is ensured. When the vehicle is in the parking gear (P gear), the high voltage can be actively powered off when the whole vehicle cannot be used or the high voltage components cannot be used.

[0133] Figure 4 The schematic diagram of the structure of the embodiment of the high voltage power up and down device of the vehicle of the present application is shown. Figure 4 As shown, the high-voltage power-on and power-off device 500 of the vehicle includes: a response module 510, a detection module 520 and a control module 530;

[0134] A response module 510, for responding to a high voltage power-on instruction of the vehicle;

[0135] A detection module 520 is used to detect whether the vehicle has a vehicle fault or a BMS fault after the vehicle is powered on at high voltage;

[0136] If yes, then detecting the vehicle fault level, BMS fault level and gear status of the vehicle;

[0137] The control module 530 is used to control the vehicle high voltage to be powered off or to keep the high voltage powered on state according to the vehicle fault level and the gear state, and to control the vehicle high voltage to be powered off or to keep the high voltage powered on state according to the BMS fault level and the gear state.

[0138] It should be noted that the high-voltage power on and off device 500 for a vehicle provided in the above embodiment and the high-voltage power on and off method for a vehicle provided in the aforementioned embodiment belong to the same concept, wherein the specific manner in which each module and unit performs operations has been described in detail in the method embodiment and will not be repeated here.

[0139] Figure 5 A schematic diagram of the structure of an embodiment of the electronic device of the present application is shown, which shows a schematic diagram of the structure of a computer system suitable for implementing the electronic device of the embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the electronic device.

[0140] See also Figure 5As shown, the electronic device includes: a controller; a memory for storing one or more programs, and when the one or more programs are executed by the controller, the above-mentioned high-voltage power-on and power-off method of the vehicle is executed.

[0141] Please continue reading Figure 5 As shown, the computer system 600 of the electronic device includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage part 608 to the random access memory (RAM) 603, such as executing the method in the above embodiment. In RAM 603, various programs and data required for system operation are also stored. CPU 601, ROM 602 and RAM 603 are connected to each other through bus 604. Input / output (I / O) interface 605 is also connected to bus 604.

[0142] The following components are connected to the I / O interface 605: an input section 606 including a keyboard, a mouse, etc.; an output section 607 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 610 as needed so that a computer program read therefrom is installed into the storage section 608 as needed.

[0143] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 609, and / or installed from a removable medium 611. When the computer program is executed by a central processing unit (CPU) 601, various functions defined in the system of the present application are executed.

[0144] Another aspect of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the high-voltage power-on and power-off method of the vehicle as described above is implemented. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0145] Another aspect of the present application further provides a computer program product or a computer program, the computer program product or the computer program comprising at least one executable instruction, when the executable instruction is executed on the high-voltage power-on and power-off device / equipment of the vehicle, the high-voltage power-on and power-off device / equipment of the vehicle executes the high-voltage power-on and power-off method of the vehicle as described below:

[0146] responding to a high voltage power-on command of the vehicle;

[0147] After the vehicle is powered on at high voltage, detecting whether the vehicle has a vehicle fault or a BMS fault;

[0148] If yes, then detecting the vehicle fault level, BMS fault level and gear status of the vehicle;

[0149] The vehicle high voltage is controlled to be powered off or maintained in the high voltage powered on state according to the vehicle fault level and the gear state, and the vehicle high voltage is controlled to be powered off or maintained in the high voltage powered on state according to the BMS fault level and the gear state.

[0150] In an optional manner, the vehicle fault level includes a first-level vehicle fault, a second-level vehicle fault and a third-level vehicle fault;

[0151] The executable instructions can also be used to enable the high-voltage power-on and power-off devices / equipment of the vehicle to perform the following operations:

[0152] If the vehicle fault level of the vehicle is a first-level vehicle fault, controlling the vehicle to maintain a high-voltage power-on state;

[0153] If the vehicle fault level is a level 2 vehicle fault and the gear state is the parking gear, sending a first high-voltage power-off instruction to control the vehicle to execute fault power-off;

[0154] If the vehicle fault level of the vehicle is a level 2 vehicle fault and the gear state is a driving gear, sending a second high-voltage power-off instruction to control the vehicle to perform a delayed power-off;

[0155] If the vehicle fault level of the vehicle is a level 3 vehicle fault, a third high-voltage power-off instruction is sent to control the vehicle to perform an emergency power-off.

[0156] In an optional manner, the BMS fault level includes a primary BMS fault, a secondary BMS fault, and a tertiary BMS fault;

[0157] The executable instructions can also be used to enable the high-voltage power-on and power-off devices / equipment of the vehicle to perform the following operations:

[0158] If the BMS fault level of the vehicle is a primary BMS fault, controlling the vehicle to maintain a high voltage power-on state;

[0159] If the BMS fault level of the vehicle is a level 2 BMS fault and the gear state is the parking gear, sending a fourth high-voltage power-off instruction to control the vehicle to execute a fault power-off;

[0160] If the BMS fault level of the vehicle is a secondary BMS fault and the gear state is a driving gear, sending a fifth high-voltage power-off instruction to control the vehicle to perform a delayed power-off;

[0161] If the BMS fault level of the vehicle is a level 3 BMS fault, a sixth high-voltage power-off instruction is sent to control the vehicle to perform emergency power-off.

[0162] In an optional manner, the executable instruction may also be used to enable the high-voltage power-on and power-off devices / equipment of the vehicle to perform the following operations:

[0163] If the BMS fault level of the vehicle is a level 2 BMS fault, detecting whether the BMS receives the fourth high voltage power-off instruction;

[0164] If not, when a first preset time is reached since the fourth high-voltage power-off instruction is sent, the vehicle is controlled to execute the high-voltage power-off of the entire vehicle.

[0165] In an optional manner, the executable instruction may also be used to enable the high-voltage power-on and power-off devices / equipment of the vehicle to perform the following operations:

[0166] If the BMS fault level of the vehicle is a level 3 BMS fault, detecting whether the BMS receives the sixth high voltage power-off instruction;

[0167] If not, when a second preset time is reached since the sixth high-voltage power-off instruction is sent, the vehicle is controlled to execute high-voltage power-off of the entire vehicle.

[0168] In an optional manner, the executable instruction may also be used to enable the high-voltage power-on and power-off devices / equipment of the vehicle to perform the following operations:

[0169] If not, the vehicle is controlled to maintain a high voltage powered state.

[0170] In an optional manner, the executable instruction may also be used to enable the high-voltage power-on and power-off devices / equipment of the vehicle to perform the following operations:

[0171] After the vehicle high voltage is powered off, if the vehicle whole vehicle fault level is greater than or equal to the whole vehicle fault preset level, or the vehicle BMS fault level is greater than or equal to the BMS fault preset level, the vehicle high voltage is prohibited from being powered on before the vehicle whole vehicle fault and / or the BMS fault are cleared.

[0172] In an optional manner, the executable instruction may also be used to enable the high-voltage power-on and power-off devices / equipment of the vehicle to perform the following operations:

[0173] After detecting the vehicle's unlocking signal, wake up the vehicle network;

[0174] Controlling the vehicle to perform a self-check to detect whether the vehicle has a vehicle fault or a BMS fault;

[0175] If not, sending a high voltage power-on instruction to control the high voltage power-on of the vehicle;

[0176] If so, a high-voltage power-on command is sent to control the vehicle to be powered on at high voltage, or a low-voltage power-off command is sent to control the vehicle to be powered off at low voltage, according to the vehicle fault level and the BMS fault level.

[0177] In an optional manner, the executable instruction may also be used to enable the high-voltage power-on device / equipment of the vehicle to perform the following operations:

[0178] If the vehicle fault level of the vehicle is less than the preset vehicle fault level, or the BMS fault level of the vehicle is less than the preset BMS fault level, a high-voltage power-on instruction is sent to control the high-voltage power-on of the vehicle;

[0179] If the vehicle fault level of the vehicle is greater than or equal to the preset vehicle fault level, or the BMS fault level of the vehicle is greater than or equal to the preset BMS fault level, a low voltage power-off instruction is sent to control the vehicle to power off at low voltage.

[0180] In the embodiment of the present application, the high-voltage power-on and power-off method of the vehicle responds to the high-voltage power-on instruction of the vehicle, and after the high-voltage power-on of the vehicle is completed, the vehicle is fault-detected to detect whether the vehicle has a whole vehicle fault or a BMS fault; if the whole vehicle fault is detected, the whole vehicle fault level and gear state of the vehicle are detected, and the vehicle high voltage power-off or high voltage power-on state is controlled according to the whole vehicle fault level and gear state; if the vehicle has a BMS fault, the BMS fault level and gear state of the vehicle are detected, and the vehicle high voltage power-off or high voltage power-on state is controlled according to the BMS fault level and gear state. Through the technical solution of the present application, while giving priority to driving safety, the different faults of the whole vehicle and BMS of the vehicle are targetedly handled, which solves the problem of low stability and reliability of the high-voltage power-on and power-off of the vehicle under different circumstances, and improves the driving experience and driving safety of users.

[0181] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0182] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0183] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not constitute limitations on the units themselves in some cases.

[0184] According to one aspect of an embodiment of the present application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM), such as executing the method in the above embodiment. In RAM, various programs and data required for system operation are also stored. CPU, ROM and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0185] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that the computer program read therefrom is installed into the storage part as needed.

[0186] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

[0187] The data collection and processing in this application should be strictly in accordance with the requirements of relevant national laws and regulations when applied in practice, and the informed consent or separate consent of the personal information subject should be obtained. Subsequent data use and processing should be carried out within the scope of authorization of laws and regulations and the personal information subject.

Claims

1. A method for turning on and off high voltage power of a vehicle, It is characterized in that The method includes: responding to a high voltage power-on command of the vehicle; After the vehicle is powered on at high voltage, detecting whether the vehicle has a vehicle fault or a BMS fault; If yes, then detecting the vehicle fault level, BMS fault level and gear status of the vehicle; The vehicle high voltage is controlled to be powered off or maintained in the high voltage powered on state according to the vehicle fault level and the gear state, and the vehicle high voltage is controlled to be powered off or maintained in the high voltage powered on state according to the BMS fault level and the gear state.

2. The high voltage power-on and power-off method for a vehicle according to claim 1, It is characterized in that The vehicle failure levels include level one vehicle failure, level two vehicle failure and level three vehicle failure; Controlling the vehicle high voltage to be powered off or to be powered on according to the vehicle fault level and the gear state further includes: If the vehicle fault level of the vehicle is a first-level vehicle fault, controlling the vehicle to maintain a high-voltage power-on state; If the vehicle fault level of the vehicle is a level 2 vehicle fault and the gear state is the parking gear, sending a first high-voltage power-off instruction to control the vehicle to execute fault power-off; If the vehicle fault level of the vehicle is a level 2 vehicle fault and the gear state is a driving gear, sending a second high-voltage power-off instruction to control the vehicle to perform a delayed power-off; If the vehicle fault level of the vehicle is a level 3 vehicle fault, a third high-voltage power-off instruction is sent to control the vehicle to perform an emergency power-off.

3. The high voltage power-on and power-off method for a vehicle according to claim 1, It is characterized in that The BMS fault levels include primary BMS fault, secondary BMS fault and tertiary BMS fault; The controlling the vehicle high voltage to be powered off or to be powered on according to the BMS fault level and the gear state further includes: If the BMS fault level of the vehicle is a primary BMS fault, controlling the vehicle to maintain a high voltage power-on state; If the BMS fault level of the vehicle is a level 2 BMS fault and the gear state is the parking gear, sending a fourth high-voltage power-off instruction to control the vehicle to execute a fault power-off; If the BMS fault level of the vehicle is a secondary BMS fault and the gear state is a driving gear, sending a fifth high-voltage power-off instruction to control the vehicle to perform a delayed power-off; If the BMS fault level of the vehicle is a level 3 BMS fault, a sixth high-voltage power-off instruction is sent to control the vehicle to perform emergency power-off.

4. The high voltage power-on and power-off method for a vehicle according to claim 3, It is characterized in that The method further comprises: If the BMS fault level of the vehicle is a level 2 BMS fault, detecting whether the BMS receives the fourth high voltage power-off instruction; If not, when a first preset time is reached since the fourth high-voltage power-off instruction is sent, the vehicle is controlled to execute the high-voltage power-off of the entire vehicle.

5. The high voltage power-on and power-off method for a vehicle according to claim 3, It is characterized in that The method further comprises: If the BMS fault level of the vehicle is a level 3 BMS fault, detecting whether the BMS receives the sixth high voltage power-off instruction; If not, when a second preset time is reached since the sixth high-voltage power-off instruction is sent, the vehicle is controlled to execute high-voltage power-off of the entire vehicle.

6. The high voltage power on and off method for a vehicle according to claim 1, It is characterized in that After detecting whether the vehicle has a vehicle fault or a BMS fault, the method further includes: If not, the vehicle is controlled to maintain a high voltage powered state.

7. The high voltage power-on and power-off method for a vehicle according to claim 1, It is characterized in that The method further comprises: After the vehicle high voltage is powered off, if the vehicle whole vehicle fault level is greater than or equal to the whole vehicle fault preset level, or the vehicle BMS fault level is greater than or equal to the BMS fault preset level, the vehicle high voltage is prohibited from being powered on before the vehicle whole vehicle fault and / or the BMS fault are cleared.

8. The high voltage power on and off method for a vehicle according to claim 1, It is characterized in that Before responding to the high voltage power-on instruction of the vehicle, the method further includes: After detecting the vehicle's unlocking signal, wake up the vehicle network; Controlling the vehicle to perform a self-check to detect whether the vehicle has a vehicle fault or a BMS fault; If not, sending a high voltage power-on instruction to control the high voltage power-on of the vehicle; If so, a high-voltage power-on command is sent to control the vehicle to be powered on at high voltage, or a low-voltage power-off command is sent to control the vehicle to be powered off at low voltage, according to the vehicle fault level and the BMS fault level.

9. The high voltage power-on and power-off method for a vehicle according to claim 8, It is characterized in that The sending of a high-voltage power-on instruction to control the high-voltage power-on of the vehicle or the sending of a low-voltage power-off instruction to control the low-voltage power-off of the vehicle according to the vehicle fault level and the BMS fault level further includes: If the vehicle fault level of the vehicle is less than the preset vehicle fault level, or the BMS fault level of the vehicle is less than the preset BMS fault level, a high-voltage power-on instruction is sent to control the high-voltage power-on of the vehicle; If the vehicle fault level of the vehicle is greater than or equal to the preset vehicle fault level, or the BMS fault level of the vehicle is greater than or equal to the preset BMS fault level, a low voltage power-off instruction is sent to control the vehicle to power off at low voltage.

10. A high voltage power up and down device for a vehicle, It is characterized in that The device comprises: A response module, used for responding to a high voltage power-on instruction of the vehicle; A detection module, used for detecting whether the vehicle has a vehicle fault or a BMS fault after the vehicle is powered on at high voltage; If yes, then detecting the vehicle fault level, BMS fault level and gear status of the vehicle; A control module is used to control the vehicle high voltage to be powered off or to maintain the high voltage powered on state according to the vehicle fault level and the gear state, and to control the vehicle high voltage to be powered off or to maintain the high voltage powered on state according to the BMS fault level and the gear state.

11. An electronic device, It is characterized in that include: Controller; A memory is used to store one or more programs. When the one or more programs are executed by the controller, the controller implements the high-voltage power-on and power-off method for a vehicle as described in any one of claims 1 to 9.

12. A computer-readable storage medium, It is characterized in that The storage medium stores at least one executable instruction, and when the executable instruction is executed on the high-voltage power-on and power-off device / equipment of the vehicle, the high-voltage power-on and power-off device / equipment of the vehicle executes the operation of the high-voltage power-on and power-off method of the vehicle as described in any one of claims 1 to 9.

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