Power-off control method and device of vehicle, electronic equipment and storage medium

Abstract

This application provides a vehicle power-down control method, device, electronic device, and storage medium. The method includes: if the vehicle's emergency power-down switch is detected to be pressed, determining whether the triggering action of the emergency power-down switch meets a first preset condition; if the first preset condition is met, controlling the vehicle's relay to disconnect via a hard-wired drive, and sending a power-down signal to the vehicle's ECU via a bus signal, so that the ECU performs an emergency power-down on the vehicle based on the disconnected state of the relay, and / or, performing an emergency power-down on the vehicle based on the power-down signal. This application performs emergency power-down on the vehicle in two different ways, ensuring that emergency power-down control can be performed based on the other method when one method fails, and that emergency power-down control of the vehicle via the emergency power-down switch ensures that emergency power-down can be performed on vehicles with the start switch canceled.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a method, apparatus, electronic device, and storage medium for controlling the power-off of a vehicle. Background Technology

[0002] In recent years, with the rapid development of technology, the use of new energy vehicles has become increasingly common. Compared with fuel vehicles, new energy vehicles have a greater demand for intelligence, and assisted driving and even autonomous driving functions are becoming more and more widespread. As a result, the safety of new energy vehicles is receiving increasing attention. Currently, new energy vehicles may experience brake failure, leading to serious traffic accidents. This is because when a vehicle loses control, there is no way to immediately cut off power, resulting in vehicle destruction and fatalities.

[0003] Currently, to improve the user experience when getting into the vehicle, the ignition switch has been removed, and the vehicle is powered on by opening the door or unlocking the door. However, precisely because the ignition switch has been removed, the vehicle cannot be powered off in an emergency using other switches. This means that in emergency situations requiring evasive maneuvers, the vehicle's power cannot be cut off, potentially leading to serious traffic accidents. Therefore, how to enable emergency power-off for vehicles without a ignition switch has become a pressing issue that needs to be addressed. Summary of the Invention

[0004] In view of this, embodiments of this application propose a vehicle power-off control method, device, electronic device, and storage medium to improve the above-mentioned problems.

[0005] According to a first aspect of the embodiments of this application, a vehicle power-down control method is provided, the method comprising: if an emergency power-down switch of the vehicle is detected to be pressed, determining whether the triggering action of the emergency power-down switch satisfies a first preset condition; if it is determined that the first preset condition is satisfied, controlling the vehicle's relay to disconnect via a hard-wired drive, and sending a power-down signal to the vehicle's vehicle controller via a bus signal, so that the vehicle controller performs an emergency power-down on the vehicle based on the disconnected state of the relay, and / or, performing an emergency power-down on the vehicle according to the power-down signal.

[0006] According to a second aspect of the embodiments of this application, a vehicle power-off control device is provided, the device comprising: a first determining module, configured to determine whether the triggering action of the emergency power-off switch satisfies a first preset condition if the vehicle's emergency power-off switch is detected to be pressed; and a control module, configured to, if the first preset condition is satisfied, control the vehicle's relay to disconnect via a hard-wired drive, and send a power-off signal to the vehicle's vehicle controller via a bus signal, so that the vehicle controller performs an emergency power-off on the vehicle based on the disconnected state of the relay, and / or performs an emergency power-off on the vehicle according to the power-off signal.

[0007] According to a third aspect of the embodiments of this application, an electronic device is provided, comprising: a processor; and a memory storing computer-readable instructions, wherein when the computer-readable instructions are executed by the processor, the power-off control method for a vehicle as described above is implemented.

[0008] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, on which computer-readable instructions are stored, which, when executed by a processor, implement the power-off control method for a vehicle as described above.

[0009] In the solution of this application, when the emergency power-off switch is pressed, it is first determined whether the triggering action of the emergency power-off switch meets the first preset condition. If the first preset condition is met, the emergency power-off control of the vehicle is realized through hard-wired drive and bus signal. This ensures that if a failure occurs in one method, the vehicle can be controlled for emergency power-off through another method. Furthermore, by controlling the vehicle for emergency power-off through the emergency power-off switch, it is ensured that emergency power-off can be performed on vehicles whose start switch has been canceled.

[0010] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0012] Figure 1 This is a schematic diagram illustrating an application scenario of a vehicle power-off control method according to an embodiment of this application.

[0013] Figure 2This is a schematic flowchart illustrating a vehicle power-off control method according to an embodiment of this application.

[0014] Figure 3 This is a schematic flowchart illustrating a vehicle power-off control method according to another embodiment of this application.

[0015] Figure 4 This is a schematic flowchart illustrating a vehicle power-off control method according to another embodiment of this application.

[0016] Figure 5 This is a flowchart illustrating the specific steps of step 350 according to an embodiment of this application.

[0017] Figure 6 This is a schematic flowchart illustrating a vehicle power-off control method according to another embodiment of this application.

[0018] Figure 7 This is a schematic diagram illustrating the working principle of a vehicle power-off control method according to an embodiment of this application.

[0019] Figure 8 This is a schematic flowchart illustrating a vehicle power-off control method according to another embodiment of this application.

[0020] Figure 9 This is a schematic flowchart illustrating a vehicle power-off control method according to an embodiment of this application.

[0021] Figure 10 This is a schematic diagram illustrating the process of forcibly powering down a vehicle under static conditions, according to another embodiment of this application.

[0022] Figure 11 This is a block diagram of a vehicle power-off control device according to an embodiment of this application.

[0023] Figure 12 This is a hardware structure diagram of an electronic device according to an embodiment of this application.

[0024] The accompanying drawings have illustrated specific embodiments of the present invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the concept of the invention to those skilled in the art through specific embodiments. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0028] 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 can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices. The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be decomposed, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0029] Figure 1 This is an application scenario of the vehicle power-off control method shown in an embodiment of this application, such as... Figure 1As shown, this application scenario includes an emergency power-off switch, an integrated body control module (IBCM), an instrument cluster module (ICM), a gateway module (GWM), an IG1 relay (Ignition 1), an ACC (Adaptive Cruise Control) relay, a braking control system (BCS), a vehicle controller unit (VCU), a drive control unit (DCU), and a battery management system (BMS). The IG1 relay and the ACC relay control the power supply to the various electronic control units (ECUs) of the vehicle. The IG1 relay is associated with anti-theft authentication, and the ACC relay is associated with the battery's high-voltage status.

[0030] The IBCM (Interactive Boot Control Center) is the main ECU of the vehicle's electronic control system. Its functions include: 1. Real-time detection of the emergency power-down switch for faults via hard-wired acquisition; if a fault is detected, sending an alarm signal to the instrument cluster; 2. Real-time detection of the emergency power-down switch's status via hard-wired acquisition; when the switch is detected as pressed, sending an operation prompt signal to the ICM to execute the power-down function. When the IBCM executes the power-down, it controls the IG1 relay and ACC relay to disconnect via hard-wired drive. It also reads the vehicle speed signal from the BCS (Balanced Vehicle System) and the gear position / READY status signal from the VCU (Vehicle Control Unit) in real-time via bus signals.

[0031] The VCU is the main control ECU of the vehicle's electronic control system, responsible for the following functions: 1. Acquiring the IBCM's readiness signal via bus acquisition and executing the vehicle's readiness function; 2. Controlling the IG1 relay to disconnect via hard-wired acquisition, executing the vehicle's readiness function, sending a signal to the DCU to disconnect the drive system, and sending a signal to the BCS to execute an emergency braking signal; 3. Controlling the ACC relay to disconnect via hard-wired acquisition, executing the vehicle's high-voltage reduction function, sending a signal to the BMS to disconnect the high voltage, and sending a signal to the BCS to execute an emergency braking signal.

[0032] The ICM (Integrated Machine Control Unit) is the human-machine interface display (ECU) of the vehicle's electronic control system. It is responsible for displaying ICM operation alerts and alarm signals to inform the driver. The BCS (Brake Controller System) is responsible for the following functions: 1. Real-time acquisition of vehicle speed signals and determination that the vehicle meets or exceeds the functional safety level ASILC; 2. Receiving braking request signals from the VCU (Vehicle Control Unit) and executing vehicle braking, deceleration, and shifting to Park (P) gear. The DCU (Drive Control Unit) executes motor drive / disable motor drive functions upon receiving drive control commands from the VCU. The BMS (Battery Management System) executes high-voltage control functions upon receiving high-voltage control commands from the VCU.

[0033] Optionally, when the emergency power-down switch is pressed, the IBCM detects whether the triggering action of the emergency power-down switch meets the first preset condition. After determining that the first preset condition is met, the IBCM controls the IG1 relay and / or ACC of the vehicle to disconnect via hard-wired drive, and sends a power-down signal to the VCU via bus signal, so that the VCU performs an emergency power-down on the vehicle based on the disconnected state of the IG1 relay and / or ACC, and / or performs an emergency power-down on the vehicle according to the power-down signal.

[0034] Please see Figure 2 , Figure 2 This application illustrates a vehicle power-down control method according to an embodiment of the present application. In a specific embodiment, this vehicle power-down control method can be applied to, for example... Figure 11 The vehicle power-off control device 700 and the electronic device 800 equipped with the vehicle power-off control device 700 are shown. Figure 12 The specific process of this embodiment will be described below. Of course, it is understood that this method can be executed by an in-vehicle terminal with computing power. The following will focus on... Figure 2 The process shown will be described in detail. The vehicle power-off control method may specifically include the following steps:

[0035] Step 110: If the emergency power-off switch of the vehicle is detected to be pressed, determine whether the triggering action of the emergency power-off switch meets the first preset condition.

[0036] One approach is to install an emergency power-off switch in the vehicle, allowing the driver to press it to shut down the vehicle in an emergency when needed. Optionally, to prevent accidental activation by the driver, the emergency power-off switch can be located on the roof corresponding to the driver's seat. Alternatively, the emergency power-off switch can be installed in models that do not have a start switch.

[0037] Optionally, when the driver determines that the vehicle has malfunctioned and continuing to drive may lead to a safety accident, the detection of the vehicle's emergency power-off switch being pressed indicates a malfunction. To ensure the safety of the occupants, emergency power-off control is required. To prevent accidental activation, the activation conditions for the emergency power-off switch can be preset. These conditions can be the duration the emergency power-off switch is pressed or the number of consecutive triggers. After detecting the emergency power-off switch being pressed, the duration or number of triggers corresponding to the switch can be obtained. Based on the trigger duration or number of triggers, it can be determined whether the first preset condition is met. Optionally, the first preset condition can be a preset duration for the emergency power-off switch trigger, a preset number of triggers, or other conditions. The first preset condition can be set according to actual needs and is not specifically limited here.

[0038] Optionally, the emergency power-off switch can be installed in vehicles where the start switch has been removed. Since in vehicles with a start switch, the start switch only has the function of starting the vehicle and does not have the function of emergency power-off, it is impossible to perform emergency power-off operation on the vehicle through the start switch. Therefore, installing the emergency power-off switch in vehicles where the start switch has been removed can improve the driver's driving experience.

[0039] Step 120: If it is determined that the first preset condition is met, the relay of the vehicle is disconnected by hard-wired drive, and a power-down signal is sent to the vehicle controller of the vehicle by bus signal, so that the vehicle controller performs emergency power-down of the vehicle based on the disconnected state of the relay, and / or performs emergency power-down of the vehicle according to the power-down signal.

[0040] As one approach, after determining that the triggering action of the emergency power-down switch meets the first preset condition, in order to ensure that the vehicle can be powered down accurately, two methods can be set to power down the vehicle. This avoids power-down control errors caused by using only one method to power down the vehicle, thus preventing the vehicle from failing to drive safely.

[0041] Optionally, the vehicle can be configured to perform emergency power-down control via two methods: hard-wired drive and bus signal. In the hard-wired drive method, the vehicle's relays are disconnected by hard-wired drive, thereby disconnecting the vehicle's engine starting circuit and enabling the vehicle to perform an emergency power-down. In the bus signal method, an emergency power-down signal is sent to the vehicle's gateway via the vehicle's CAN network bus. The gateway can then forward the emergency power-down signal to the corresponding controller, enabling the controller to perform an emergency power-down process on the vehicle.

[0042] Optionally, after the vehicle's relay is disconnected via hard-wired drive, the on / off state of the relay can be detected after a preset time. In this way, once the vehicle's relay is confirmed to be disconnected, the vehicle's starting circuit, the vehicle's drive motor can be stopped, and the battery management module can be de-energized.

[0043] Optionally, after sending a power-off signal to the vehicle controller via a bus signal, the vehicle controller sends control signals to the vehicle's braking control system, drive motor control unit, and battery management module via bus signals based on the power-off signal. This enables the braking control system to brake the vehicle according to the control signals, the drive motor control unit to decelerate the vehicle's drive motor according to the control signals until the drive motor stops rotating, and the battery management module to stop supplying power to the vehicle according to the control signals, thereby stopping the vehicle from moving.

[0044] Optionally, since the vehicle may need to perform an emergency power-down operation if the driver discovers brake failure while driving, whether the emergency power-down operation is performed by hard-wired drive or bus signal, the vehicle's drive motor control unit can be controlled to decelerate the vehicle's drive motor until the drive motor stops rotating. Then, the vehicle's braking control system can be used to apply emergency braking to the vehicle, and the vehicle's battery management module can be used to perform the power-down process. This can ensure the safety of the people in the vehicle and the driving safety of the vehicle.

[0045] In the embodiments of this application, when the emergency power-off switch is pressed, it is first determined whether the triggering action of the emergency power-off switch meets the first preset condition. If the first preset condition is met, the emergency power-off control of the vehicle is realized through hard-wired driving and bus signal. This ensures that if a failure occurs in one method, the vehicle can be controlled for emergency power-off through another method. Furthermore, by controlling the vehicle for emergency power-off through the emergency power-off switch, it is ensured that emergency power-off can be performed on vehicles whose start switch has been canceled.

[0046] Please see Figure 3 , Figure 3 This application illustrates a vehicle power-down control method according to an embodiment of the present application. The following will focus on... Figure 3 The process shown will be described in detail. The vehicle power-off control method may specifically include the following steps:

[0047] Step 210: If the emergency power-off switch of the vehicle is detected to be pressed, determine whether the triggering action of the emergency power-off switch meets the first preset condition.

[0048] Step 220: If it is determined that the first preset condition is met, the vehicle's relay is disconnected by hard-wired drive, and a power-down signal is sent to the vehicle's controller via bus signal, so that the vehicle controller performs an emergency power-down on the vehicle based on the disconnected state of the relay, and / or performs an emergency power-down on the vehicle according to the power-down signal.

[0049] For a detailed description of steps 210 and 220, please refer to steps 110 and 120, which will not be repeated here.

[0050] Step 230: If the brake pedal of the vehicle is detected to be pressed, then the vehicle's gear shift signal is received.

[0051] In one approach, after the emergency power-down control of the vehicle is completed, if it is necessary to restart the vehicle, since the vehicle's gear automatically shifts to neutral after the power is cut off, the driver can directly control the vehicle to resume driving by pressing the brake and shifting gears.

[0052] Optionally, after the vehicle experiences an emergency power failure, a prompt message can be generated, and the driver can be instructed on how to resume driving based on the prompt message. The prompt message may contain the message "Power has been cut off, please engage gear to resume driving," and the prompt may be in the form of a voice message or a text pop-up.

[0053] Optionally, to ensure the safety and passenger experience of the occupants, if the brake pedal is not depressed or is not detected as depressed, shifting gears directly will prevent the vehicle from starting.

[0054] Optionally, to prevent the vehicle from being restarted by using the emergency power-down switch, the emergency power-down switch can be installed in models where the start switch is removed. This would prevent the vehicle from being powered down and then powered on again after being pressed repeatedly by the driver, thus avoiding a safety risk to the vehicle.

[0055] Step 240: If the shift signal indicates that the vehicle is shifted to the first gear, then the vehicle is started, wherein the first gear includes a forward gear, a reverse gear, or neutral.

[0056] One approach is to analyze the shift signal upon receipt to determine the target gear. Then, it's determined whether the target gear is the first gear. If the indicated gear is confirmed to be the first gear, the vehicle is shifted to the first gear and started. Optionally, upon confirming the shift to the first gear, the vehicle controller can send a control signal to the drive motor control unit to make the drive motor rotate at the speed corresponding to the first gear. Simultaneously, the vehicle controller sends a start signal to the battery management module, which then supplies power to the vehicle, ensuring normal starting and operation.

[0057] In this embodiment, after the vehicle is powered down in an emergency, the vehicle can be quickly restored to power by applying the brakes and shifting gears, which improves the convenience of restoring power and enhances the user experience.

[0058] Please see Figure 4 , Figure 4 This application illustrates a vehicle power-down control method according to an embodiment of the present application. The following will focus on... Figure 4 The process shown will be described in detail. The vehicle power-off control method may specifically include the following steps:

[0059] Step 310: If the emergency power-off switch of the vehicle is detected to be pressed, determine whether the triggering action of the emergency power-off switch meets the first preset condition.

[0060] For a detailed description of step 310, please refer to step 110, which will not be repeated here.

[0061] Step 320: Obtain the current speed of the vehicle.

[0062] As one approach, since different vehicle driving states require different emergency power-down operations, the vehicle's current speed can be obtained first to determine its driving state. Optionally, the vehicle's driving state includes high-speed driving, low-speed driving, and stationary driving.

[0063] Step 330: If the current vehicle speed is greater than the first preset vehicle speed, the first relay is disconnected by hard-wired drive and a power-down signal is sent to the vehicle controller by bus signal. The first relay is used to control the correct start and normal operation of the vehicle.

[0064] As one approach, when the current vehicle speed is determined to be greater than a first preset speed, the vehicle is considered to be in a high-speed driving state. In this high-speed driving state, emergency power-off control needs to consider the safety of the occupants and the vehicle's driving safety. This can be achieved by first controlling the vehicle to decelerate via hardwired drive or bus signal, and then, once the vehicle speed has decelerated to a preset speed, braking control is applied through the vehicle's braking system, and power is cut off through the vehicle's battery management module. Optionally, the first preset speed can be 5 km / h, or other speeds, which can be set according to actual needs and are not specifically limited here.

[0065] Optionally, the first relay, which controls the correct starting and normal operation of the vehicle, can be disconnected via hard-wired drive. This first relay can be an IG1 relay, which typically supplies power to the vehicle's ignition system, drive motor, and other electrical equipment when the vehicle is running. Disconnecting this first relay can gradually decelerate the vehicle, enabling emergency power-off control while the vehicle is in motion. Alternatively, for safety reasons, other relays, such as the vehicle's ACC relay (which controls the normal operation of the vehicle's entertainment system, navigation system, air conditioning system, and lighting system), cannot be disconnected when the vehicle is traveling at high speeds.

[0066] Optionally, a power-down signal can be sent to the vehicle controller via a bus signal. The vehicle controller then sends deceleration signals to the vehicle's drive motor control unit, a power-down signal to the vehicle's battery management module, and a braking signal to the vehicle's braking system, thereby achieving emergency power-down control of the vehicle.

[0067] Step 340: If it is determined within a first preset time period that the vehicle controller responds to the power-down signal and exits the preparation state, or if the first relay is detected to be disconnected, then the vehicle controller is controlled to perform an emergency power-down on the vehicle based on the disconnected state of the first relay, and / or the vehicle controller is controlled to perform an emergency power-down on the vehicle according to the power-down signal.

[0068] In one approach, when the vehicle is powered down in an emergency via hard-wired drive or bus signal, the vehicle's integrated body control module starts a timer to detect, within a first preset duration, whether the vehicle controller has responded to the power-down signal and exited the ready state (i.e., the vehicle controller exits READAY), or whether the vehicle's first relay has disconnected. Optionally, the disconnection of the first relay or the exit of the ready state of the vehicle controller can be determined by detecting whether the motor speed of the vehicle's drive motor has changed.

[0069] Optionally, when it is determined that the first relay is disconnected or the vehicle controller exits the ready state, the vehicle's braking system can be made to brake the vehicle based on the disconnected state of the first relay or the power-down signal, and the vehicle's battery management module can be made to stop supplying power to the vehicle, thereby realizing emergency power-down of the vehicle.

[0070] As another approach, if the vehicle controller fails to respond to the power-down signal and exit the preparation state within the first preset time period, or if the first relay is not disconnected, the vehicle's power supply level remains unchanged, meaning the vehicle maintains its current operating state without change, thereby avoiding a safety accident caused by powering down the vehicle.

[0071] In some embodiments, the method further includes: step 350, if the current vehicle speed is less than or equal to the first preset vehicle speed, then controlling the first relay and the second relay to disconnect via hard-wired drive, and sending a power-down signal to the vehicle controller via bus signal, controlling the vehicle controller to perform an emergency power-down on the vehicle based on the disconnected state of the first relay and the second relay, and / or controlling the vehicle controller to perform an emergency power-down on the vehicle according to the power-down signal, wherein the second relay is used to control the normal operation of the vehicle's electrical equipment.

[0072] As one approach, when the current vehicle speed is determined to be less than or equal to a first preset speed, it can be determined that the vehicle is currently in a low-speed driving state. When the vehicle is traveling at low speed, directly cutting off the power to the vehicle will not cause serious safety issues. Therefore, the first and second relays of the vehicle can be disconnected via hard-wired control to enable the vehicle to quickly perform an emergency power-off. Furthermore, to ensure that the vehicle can be powered down, two different methods are set up for emergency power-off control, so that the vehicle can still be powered down in case either method fails.

[0073] In other embodiments, such as Figure 5 As shown, step 350 includes:

[0074] Step 351: The vehicle is braked using its braking system.

[0075] In one approach, after the vehicle controller detects that the first and second relays are disconnected, or after the CAN network bus receives the READY command signal from the integrated body control module, it sends an emergency braking command to the vehicle's braking system, which then performs emergency braking control on the vehicle based on the emergency braking command.

[0076] Optionally, a disconnect start command can be sent to the vehicle's drive motor management unit, which can then use the disconnect start command to cause the vehicle's drive motor to decelerate and stop working, thereby performing emergency power-off control on the vehicle.

[0077] Optionally, a high-voltage reduction command can be sent to the vehicle's battery management module, which can then execute the vehicle's overall high-voltage reduction function based on the command, thereby enabling emergency power-off control of the vehicle.

[0078] Step 352: Obtain the braking speed of the vehicle after braking control is performed.

[0079] One approach is to monitor the vehicle's speed in real time while the vehicle's braking system is controlling the braking, thereby obtaining the braking speed after the braking control is applied.

[0080] Step 353: If the braking speed is less than the second preset speed, then control the vehicle to switch to the second gear, wherein the second gear is the parking gear.

[0081] As one approach, when the braking speed is determined to be less than the second preset speed, the vehicle can be considered to be stationary. To ensure vehicle safety, the vehicle's gear can be switched to parking gear. This avoids the situation where the vehicle continues to move after braking while in a forward gear, thus ensuring the safety of the occupants and the vehicle's driving safety.

[0082] In this embodiment, the emergency power-down control of the vehicle is determined based on the relationship between the current vehicle speed and the first preset vehicle speed. When the current vehicle speed is greater than the first preset speed, the vehicle controller responds to the power-down signal and exits the preparation state or detects the first relay being disconnected within a first preset time period, thus performing emergency power-down control on the vehicle. When the current vehicle speed is less than or equal to the first preset speed, the first and second relays are disconnected and a power-down signal is sent, thereby performing emergency power-down on the vehicle based on the disconnected state of the first and second relays, or the vehicle controller performs emergency power-down on the vehicle based on the power-down signal, thus enabling emergency power-down of the vehicle under different driving conditions.

[0083] Please see Figure 6 , Figure 6 This application illustrates a vehicle power-down control method according to an embodiment of the present application. The following will focus on... Figure 6 The process shown will be described in detail. The vehicle power-off control method may specifically include the following steps:

[0084] Step 410: Detect the first voltage of the first switch and the second voltage of the second switch of the emergency power-off switch.

[0085] As a method, before performing emergency power-down control on the vehicle after the emergency power-down switch is triggered, it is necessary to check whether the vehicle's emergency power-down switch is faulty. In order to rule out the possibility that the emergency power-down switch was triggered due to a fault in the vehicle's emergency power-down switch, the first voltage of the first switch and the second voltage of the second switch of the emergency power-down switch can be detected first. The fault of the emergency power-down switch can be determined based on the first voltage and the second voltage.

[0086] Optionally, the emergency power-off switch is a dual-redundant design switch to prevent the vehicle from being unable to be powered off when the emergency power-off switch is triggered if one switch fails.

[0087] Step 420: Determine whether the emergency power-off switch has malfunctioned based on the first voltage and the second voltage.

[0088] As one method, since emergency power-off switches can experience open-circuit and short-circuit faults, the presence of a first voltage and a second voltage can be used to determine whether the first or second switch of the emergency power-off switch has an open-circuit or short-circuit fault. Optionally, if the first voltage or the second voltage is 0, a short-circuit fault is determined to have occurred in the first or second switch; if the first voltage or the second voltage is equal to the power supply voltage of the emergency power-off switch, an open-circuit fault is determined to have occurred in the first or second switch.

[0089] Alternatively, the fault of the emergency power-off switch can be determined by the first current of the first switch and the second current of the second switch. Optionally, if the first current or the second current is 0, it can be determined that the first switch or the second switch has an open-circuit fault.

[0090] Step 430: If it is determined that the emergency power-off switch has malfunctioned, then the fault information of the emergency power-off switch is determined, and a fault alarm is triggered based on the fault information.

[0091] As a method, after determining that the emergency power-off switch has malfunctioned, in order to ensure the safety of the people in the vehicle and the vehicle itself, the type and information of the malfunction of the emergency power-off switch should be recorded first, and then a fault alarm should be triggered on the vehicle based on the fault information.

[0092] Optionally, when the vehicle is in the OFF position (dormant), the emergency power-down switch cannot wake up the vehicle network or send alarm signals, thus preventing fault alarms. When the vehicle is in the ACC or ON position, a fault alarm will be triggered based on the fault information detected by the emergency power-down switch. This information can be sent to the vehicle's infotainment screen or connected electronic devices, allowing the driver to address the fault. Optionally, an alarm can also be triggered via the vehicle's voice system and will continue until the fault is cleared or the vehicle is switched to the OFF position.

[0093] Optionally, after the integrated body control module receives an alarm signal, the vehicle's infotainment screen continuously displays the fault information, and the alarm sound continues for a certain duration before stopping. The alarm can be cleared by pressing the OK button on the steering wheel. After receiving the OK command signal, the vehicle's infotainment screen will not display any alarms even if the integrated body control module continues to alarm. Only one alarm can be displayed per power cycle. The alarm process will restart after the vehicle is powered off and then powered on again.

[0094] In some embodiments, such as Figure 7 As shown, the method further includes:

[0095] Step 510: Obtain the first activation timestamp of the first switch and the second activation timestamp of the second switch.

[0096] In one approach, when the first switch and the second switch are activated, the energizing time of the first switch and the second switch can be regarded as the first activation timestamp of the first switch and the second activation timestamp of the second switch. Thus, the first activation timestamp can be determined by obtaining the energizing timestamp of the first switch, and similarly, the second activation timestamp can be determined by obtaining the energizing timestamp of the second switch.

[0097] Step 520: Determine whether the activation time interval between the first switch and the second switch is greater than or equal to a preset time interval based on the first activation timestamp and the second activation timestamp.

[0098] As one approach, to ensure that the dual-switch design of the emergency power-off switch meets the ASIL B functional safety design, the activation time interval between the first and second timestamps can be determined to determine whether the emergency power-off switch has malfunctioned. Optionally, the activation time interval can be determined by determining the absolute value of the difference between the first and second activation timestamps. Optionally, the preset time interval can be 200ms, or other time intervals, which can be set according to actual needs and are not specifically limited here.

[0099] Alternatively, the first continuous activation duration of the first switch and the continuous activation duration of the second switch can be determined, and the first and second continuous activation durations can be compared with the target continuous activation duration to determine whether the emergency power-off switch has malfunctioned.

[0100] Step 530: If it is determined that the activation time interval is greater than or equal to the preset time interval, then it is determined that the emergency power-off switch has malfunctioned.

[0101] In one approach, when the activation time interval is determined to be greater than or equal to the preset time interval, it can be determined that the first and second switches of the emergency power-off switch are stuck together, causing the emergency power-off switch to malfunction.

[0102] Alternatively, if it is determined that both the first continuous activation duration and the second continuous activation duration are greater than the target continuous activation duration, it can be determined that the first switch and the second switch are continuously activated, thereby causing the emergency power-off switch to be unable to be turned off and to remain on for an extended period of time, thus ensuring that the vehicle's emergency power-off switch is continuously activated.

[0103] In this embodiment, in order to ensure accurate and timely emergency power-off of the vehicle, the emergency power-off switch of the vehicle can be fault detected in real time, so that a fault alarm can be issued in a timely manner when it is determined that the emergency power-off switch has malfunctioned.

[0104] Please see Figure 8 , Figure 8 This application illustrates a vehicle power-down control method according to an embodiment of the present application. The following will focus on... Figure 8 The process shown will be described in detail. The vehicle power-off control method may specifically include the following steps:

[0105] Step 610: Obtain the trigger duration of the emergency power-off switch and the number of times the emergency power-off switch is triggered within a second preset duration.

[0106] As one method, to prevent accidental activation of the vehicle's emergency power-off switch after it is triggered, the trigger duration of the emergency power-off switch or the number of triggers within a third preset duration can be obtained to ensure that the emergency power-off switch is triggered according to the current driver's driving intention. The third preset duration can be 6 seconds or other durations, which can be set according to actual needs and are not specifically limited here.

[0107] Step 620: If the trigger duration is greater than or equal to the third preset duration, or if the number of triggers within the second preset duration meets the preset number, then it is determined that the triggering action of the emergency power-off switch meets the first preset condition.

[0108] As a time limit, in order to ensure accurate emergency power-off processing of the vehicle, multiple different triggering methods can be set. As long as the triggering action of the emergency power-off switch meets any of the triggering methods, the vehicle can be processed for emergency power-off based on the triggering action of the emergency power-off.

[0109] Optionally, since drivers have a long reaction time to recognize risks in emergency situations, the longer the emergency power-off switch is pressed, the later the vehicle will shut down, increasing the risk of personal injury. Therefore, the third preset duration can be set to a shorter duration, such as 2 seconds. Considering that drivers may experience hand tremors in emergency situations, a trigger definition for pressing the emergency power-off switch three times consecutively can be added. Each press of the emergency power-off switch should distinguish between short and long presses. Therefore, it can be defined to press three times within 6 seconds, specifically within any 6 seconds after each switch is pressed. A second preset duration and preset number of times can also be set according to actual needs. This is only an example and not a specific limitation.

[0110] Optionally, when the emergency power-off switch is triggered, a prompt can be provided for the triggering operation. For example, the emergency power-off switch operation prompt could be that each press maintains a 6-second operation prompt alarm, and the time increases by 6 seconds for each additional press, thereby reminding the driver to operate the emergency power-off switch according to the prompt alarm.

[0111] As another method, if it is determined that the trigger duration is less than the third preset duration, or the number of triggers within the second preset duration does not meet the preset number, then it is determined that the triggering action of the emergency power-off switch does not meet the first preset condition. At this time, an alarm prompt can be issued. The alarm prompt can be in text or voice form, and the prompt content can be "Emergency power-off, please press and hold for 2 seconds" or "Press three times within 6 seconds". The vehicle's power supply position remains in the ON position, and the alarm prompt can be maintained for a certain duration before ending, thereby reminding the driver to operate according to the prompt.

[0112] Step 630: If it is determined that the first preset condition is met, the vehicle's relay is disconnected by hard-wired drive, and a power-down signal is sent to the vehicle's controller via bus signal, so that the vehicle controller performs an emergency power-down on the vehicle based on the disconnected state of the relay, and / or performs an emergency power-down on the vehicle according to the power-down signal.

[0113] The specific steps of step 630 can be found in step 120, and will not be repeated here.

[0114] In this embodiment, the triggering action of the emergency power-off switch is determined to meet the first preset condition by the relationship between the triggering duration of the emergency power-off switch and the third preset duration, or the relationship between the number of times the emergency power-off switch is triggered within the second preset duration and the preset number of times. This avoids the vehicle from being mistakenly powered down when the emergency power-off switch is accidentally touched, thus ensuring the accuracy of the vehicle's emergency power-off.

[0115] Figure 9 This is a schematic flowchart illustrating a vehicle power-off control method according to an embodiment of this application, as shown below. Figure 9 As shown, when the vehicle is traveling at high speed, if the driver discovers that the brakes have failed, they can trigger the emergency power-down function by pressing and holding the emergency power-down switch in the vehicle three times within 2 seconds or 6 seconds. If the integrated body control module detects that the emergency power-down switch has been pressed, it will first check the emergency power-down switch to determine whether it has malfunctioned. Specifically, it can check whether both switch states of the emergency power-down switch are activated simultaneously and whether the time interval between the activation of the two switch circuits is less than 200ms (to meet the functional safety ASIL B design and avoid the risk of accidental triggering of the emergency power-down switch due to switch sticking). If it is determined that the two switch states of the emergency power-down switch are not activated simultaneously and the time interval between the activation of the two switch circuits is greater than or equal to 200ms, a fault prompt will be issued through the vehicle or an electronic device connected to the vehicle. The prompt may be "Please check the emergency power-down switch", and the fault code of the emergency power-down switch will be recorded in the vehicle.

[0116] If it is determined that the time interval between the simultaneous activation of both switches of the emergency power-off switch and the activation of both switch circuits of the emergency power-off switch is less than 200ms, then the IBCM checks whether the triggering action of the emergency power-off switch meets the first preset condition. The first preset condition includes whether the triggering action of the emergency power-off switch meets the requirement of pressing and holding the emergency power-off switch for 2 seconds, or whether the triggering action of the emergency power-off switch meets the requirement of pressing the emergency power-off switch three times consecutively within 6 seconds. If it is determined that the first preset condition is not met, the vehicle power position remains in the ON position, and the vehicle issues an alarm prompt. The prompt message may be "Emergency power-off, please press and hold for 2 seconds or press three times within 6 seconds". The alarm prompt ends after 6 seconds.

[0117] If the first preset condition is met, the IBCM obtains the vehicle speed and determines whether the vehicle speed is valid and the speed is <5km / h. If the vehicle speed is valid and the speed is <5km / h, the IBCM disconnects the IG1 relay and ACC relay by hard-wired drive, turns the vehicle power off, and sends a READY request signal to the VCU via bus signal.

[0118] When the VCU detects that the IG1 relay is disconnected or the IBCM receives the READY command signal via the bus signal, it sends a disconnect drive command to the DCU and an emergency braking command to the BCS. When the DCU receives the disconnect start command from the VCU, it performs motor deceleration and stops operation. When the BCS receives the emergency braking command from the VCU, it performs the emergency braking function, and when the vehicle speed is below 3 km / h, it requests the vehicle to switch back to P gear until the vehicle gradually stops and returns to a stationary state.

[0119] If the vehicle speed is invalid or the vehicle speed is ≥5km / h, the IBCM disconnects the IG1 relay via hard-wired drive, allowing the vehicle power supply to ACC. Simultaneously, it sends a READY request command signal to the VCU via bus signal. The IBCM starts a 1-second timer to continuously monitor whether the vehicle has exited READY mode. If the vehicle has not exited READY mode after 1 second, the vehicle power supply level remains unchanged, and the vehicle's instrument panel does not issue an alarm. If the vehicle exits READY mode within 1 second, and the VCU detects the IG1 relay disconnecting or the IBCM receives the READY request command signal via bus, it sends a disconnect drive command to the DCU. When the DCU receives the disconnect start command from the VCU, it executes motor deceleration and stops operation.

[0120] When the IBCM determines that the vehicle is in the ACC down state and the VCU is out of READY mode, the vehicle's instrument panel will display a power-down warning message, which may read "Power has been cut off, please shift gears to resume driving." After the vehicle is in the power-down state, the driver can restore the vehicle to driving status by pressing the brake and shifting to D / R / N gears. If, after the vehicle is restored to driving status, the driver presses and holds the emergency power-down switch three times within 2 seconds or 6 seconds, the vehicle will be powered off and the instrument panel warnings will be cleared.

[0121] Figure 10 This is a schematic diagram illustrating the forced power-off process of a vehicle under static conditions, according to another embodiment of this application. Figure 10As shown, when the vehicle is stationary, the driver presses the emergency power-off switch three times within 2 or 6 seconds to trigger the forced power-off function. After the emergency power-off switch is pressed, the IBCM disconnects the IG1 relay and ACC relay via hard-wired drive and sends a VCU ready request command signal via bus signal. When the VCU detects that the IG1 relay and ACC relay are disconnected, or the IBCM receives the ready request command signal via bus, it sends a drive disconnect command to the DCU, an emergency braking command to the BCS, and a high-voltage reduction command to the BMS. Subsequently, upon receiving the drive disconnect command from the VCU, the DCU decelerates and stops the motor; upon receiving the emergency braking command from the VCU, the BCS performs the emergency braking function; and upon receiving the high-voltage reduction command from the VCU, the BMS performs the high-voltage reduction function for the entire vehicle. Among them, since the forced power-down function has the highest priority, regardless of whether the vehicle is in ACC / ON / READY / remote power-on or other operating conditions, when the vehicle can be controlled for emergency power-down, the entire vehicle needs to be powered down and the high voltage is reduced. This is in order to meet the regulatory requirement that only one action is needed to go from "drivable mode" to the drive system power-off state.

[0122] Figure 11 This is a block diagram of a vehicle power-off control device according to an embodiment of this application, such as... Figure 11 As shown, the vehicle's power-off control device 700 includes a determination module 710 and a control module 720.

[0123] The first determining module 710 is used to determine whether the triggering action of the emergency power-off switch meets a first preset condition if the vehicle's emergency power-off switch is detected to be pressed; the control module 720 is used to control the vehicle's relay to disconnect via hard-wired drive if the first preset condition is met, and to send a power-off signal to the vehicle's vehicle controller via bus signal, so that the vehicle controller performs an emergency power-off on the vehicle based on the disconnected state of the relay, and / or performs an emergency power-off on the vehicle according to the power-off signal.

[0124] In some embodiments, the power-off control of the vehicle further includes: a shift signal acquisition module, configured to receive a shift signal of the vehicle if the brake pedal of the vehicle is detected to be depressed; and a start module, configured to start the vehicle if the shift signal indicates that the vehicle is shifted to a first gear, wherein the first gear includes a forward gear, a reverse gear, or a neutral gear.

[0125] In some embodiments, the relay includes a first relay and a second relay, and the control module 720 includes: a current vehicle speed acquisition submodule, used to acquire the current vehicle speed; a first control submodule, used to control the first relay to disconnect via hard-wired drive if the current vehicle speed is greater than a first preset vehicle speed, and to send a power-down signal to the vehicle controller via bus signal, wherein the first relay is used to control the correct start and normal operation of the vehicle; and a second control submodule, used to control the vehicle controller to perform an emergency power-down on the vehicle based on the disconnected state of the first relay if it is determined within a first preset time period that the vehicle controller responds to the power-down signal and exits the preparation state, or detects that the first relay is disconnected, and / or to control the vehicle controller to perform an emergency power-down on the vehicle according to the power-down signal.

[0126] In some embodiments, the control module 720 further includes: a third control submodule, configured to, if the current vehicle speed is less than or equal to the first preset vehicle speed, control the first relay and the second relay to disconnect via hard-wired drive, and send a power-down signal to the vehicle controller via bus signal, controlling the vehicle controller to perform an emergency power-down on the vehicle based on the disconnected state of the first relay and the second relay, and / or control the vehicle controller to perform an emergency power-down on the vehicle according to the power-down signal, wherein the second relay is used to control the normal operation of the vehicle's electrical equipment.

[0127] In some embodiments, the third control submodule includes: a braking control unit for braking control of the vehicle via the vehicle's braking system; a braking speed acquisition unit for acquiring the braking speed of the vehicle after braking control; and a gear shifting control unit for controlling the vehicle to shift to a second gear if the braking speed is less than a second preset speed, wherein the second gear is a parking gear.

[0128] In some embodiments, the vehicle power-off control device 700 further includes: a voltage detection module for detecting a first voltage of the first switch and a second voltage of the second switch of the emergency power-off switch; a fault first determination module for determining whether the emergency power-off switch has malfunctioned based on the first voltage and the second voltage; and a fault alarm module for determining fault information of the emergency power-off switch and issuing a fault alarm based on the fault information if it is determined that the emergency power-off switch has malfunctioned.

[0129] In some embodiments, the vehicle power-off control device 700 further includes: a timestamp acquisition module, configured to acquire a first activation timestamp of the first switch and a second activation timestamp of the second switch; a second determination module, configured to determine whether the activation time interval of the first switch and the second switch is greater than or equal to a preset time interval based on the first activation timestamp and the second activation timestamp; and a second fault determination module, configured to determine that the emergency power-off switch has malfunctioned if the activation time interval is determined to be greater than or equal to the preset time interval.

[0130] In some embodiments, the first determining module 710 includes: an acquisition submodule, configured to acquire the trigger duration of the emergency power-off switch and the number of times the emergency power-off switch is triggered within a second preset duration; and a determining submodule, configured to determine that the triggering action of the emergency power-off switch satisfies a first preset condition if the trigger duration is greater than or equal to a third preset duration, or if the number of triggers within the second preset duration meets a preset number.

[0131] According to one aspect of the embodiments of this application, an electronic device is also provided, such as... Figure 12 As shown, the electronic device 800 includes a processor 810 and one or more memories 820. The one or more memories 820 are used to store program instructions executed by the processor 810. When the processor 810 executes the program instructions, it implements the above-described vehicle power-off control method.

[0132] Furthermore, the processor 810 may include one or more processing cores. The processor 810 runs or executes instructions, programs, code sets, or instruction sets stored in the memory 820, and retrieves data stored in the memory 820. Optionally, the processor 810 may be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 810 may integrate one or a combination of several of the following: a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), and a modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor and may be implemented using a separate communication chip.

[0133] According to one aspect of this application, a computer-readable storage medium is also provided, which may be included in the electronic device described in the above embodiments; or it may exist independently and not assembled into the electronic device. The computer-readable storage medium carries computer-readable instructions that, when executed by a processor, implement the methods in any of the above embodiments.

[0134] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such transmitted data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0135] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0136] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0137] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0138] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A power down control method of a vehicle, characterized by, The method comprises: If it is detected that an emergency power-off switch of the vehicle is pressed, it is determined whether a triggering action of the emergency power-off switch meets a first preset condition; If it is determined that the first preset condition is met, the relay of the vehicle is controlled to be disconnected by a hard-wire driving mode, and a power-off signal is sent to a vehicle controller of the vehicle by a bus signal mode, so that the vehicle controller performs emergency power-off on the vehicle based on a disconnection state of the relay, and / or the vehicle controller performs emergency power-off on the vehicle according to the power-off signal; The relay of the vehicle comprises a first relay, and the control of the relay of the vehicle to be disconnected by the hard-wire driving mode and the sending of the power-off signal to the vehicle controller by the bus signal mode comprise: Obtaining a current vehicle speed of the vehicle; If the current vehicle speed is greater than a first preset vehicle speed, the first relay is controlled to be disconnected by the hard-wire driving mode, and the power-off signal is sent to the vehicle controller by the bus signal mode, wherein the first relay is used to control correct starting and normal operation of the vehicle; Detecting whether the vehicle controller exits a preparation state in response to the power-off signal within a first preset time length, or detecting whether the first relay of the vehicle is disconnected; If it is determined that the vehicle controller exits the preparation state in response to the power-off signal within the first preset time length, or it is detected that the first relay is disconnected, the vehicle controller is controlled to perform emergency power-off on the vehicle based on the disconnection state of the first relay, and / or the vehicle controller is controlled to perform emergency power-off on the vehicle according to the power-off signal; If it is determined that the vehicle controller does not exit the preparation state in response to the power-off signal within the first preset time length, or it is detected that the first relay is not disconnected, the vehicle maintains a current running state unchanged.

2. The method of claim 1, wherein, After the control of the relay of the vehicle to be disconnected by the hard-wire driving mode and the sending of the power-off signal to the vehicle controller by the bus signal mode, the method further comprises: If it is detected that a brake pedal of the vehicle is stepped on, a gear shifting signal of the vehicle is received; If the gear shifting signal indicates that the vehicle is switched to a first gear, the vehicle is started, wherein the first gear comprises a forward gear, a reverse gear or a neutral gear.

3. The method of claim 1, wherein, The relay of the vehicle further comprises a second relay, and the method further comprises: If the current vehicle speed is less than or equal to the first preset vehicle speed, the first relay and the second relay are controlled to be disconnected by the hard-wire driving mode, and the power-off signal is sent to the vehicle controller by the bus signal mode, so that the vehicle controller performs emergency power-off on the vehicle based on disconnection states of the first relay and the second relay, and / or the vehicle controller performs emergency power-off on the vehicle according to the power-off signal, wherein the second relay is used to control normal operation of an electrical device of the vehicle.

4. The method of claim 3, wherein, The control of the vehicle controller is based on the disconnection state of the first relay and the second relay to control the vehicle to be powered off urgently, and / or, the control of the vehicle controller is based on the disconnection state of the first relay and the second relay to control the vehicle to be powered off urgently, comprising: Braking control of the vehicle through the braking system of the vehicle; Obtaining the braking speed of the vehicle after braking control; If the braking speed is less than the second preset speed, the gear of the vehicle is switched to the second gear, wherein the second gear is the parking gear.

5. The method of claim 1, wherein, The method further comprises: Detecting the first voltage of the first switch and the second voltage of the second switch of the emergency power-off switch; Determining whether the emergency power-off switch fails according to the first voltage and the second voltage; If it is determined that the emergency power-off switch fails, determining the fault information of the emergency power-off switch, and performing fault alarm according to the fault information.

6. The method of claim 5, wherein, The method further comprises: Obtaining the first activation time stamp of the first switch and the second activation time stamp of the second switch; Determining whether the activation time interval of the first switch and the second switch is greater than or equal to the preset time interval according to the first activation time stamp and the second activation time stamp; If it is determined that the activation time interval is greater than or equal to the preset time interval, it is determined that the emergency power-off switch fails.

7. The method according to any one of claims 1 to 6, characterized in that, If the emergency power-off switch of the vehicle is detected to be pressed, it is determined whether the triggering action of the emergency power-off switch meets the first preset condition, comprising: Obtaining the triggering duration of the emergency power-off switch and the triggering frequency of the emergency power-off switch within the second preset duration; If the triggering duration is greater than or equal to the third preset duration, or the triggering frequency within the second preset duration meets the preset frequency, it is determined that the triggering action of the emergency power-off switch meets the first preset condition.

8. A power down control device for a vehicle, characterized by The device comprises: A first determination module is configured to determine whether the triggering action of the emergency power-off switch meets the first preset condition if the emergency power-off switch of the vehicle is detected to be pressed; A control module is configured to control the relay of the vehicle to be disconnected by a hard-wire driving mode, and send a power-off signal to the vehicle controller by a bus signal mode, so that the vehicle controller controls the vehicle to be powered off urgently based on the disconnection state of the relay, and / or, the vehicle controller controls the vehicle to be powered off urgently according to the power-off signal, if it is determined that the first preset condition is met; The relay of the vehicle comprises a first relay, the relay of the vehicle is controlled to be disconnected by a hard-wire driving mode, and the power-off signal is sent to the vehicle controller by a bus signal mode, comprising: Obtaining the current speed of the vehicle; If the current speed of the vehicle is greater than the first preset speed, the first relay is controlled to be disconnected by a hard-wire driving mode, and the power-off signal is sent to the vehicle controller by a bus signal mode, wherein the first relay is used to control the correct start and normal operation of the vehicle; Detecting whether the vehicle controller exits the preparation state in response to the power-off signal within the first preset duration, or detecting whether the first relay of the vehicle is disconnected; If it is determined that the vehicle controller exits the preparation state in response to the power-down signal within a first preset time period, or it is detected that the first relay is disconnected, the vehicle controller is controlled to perform emergency power-down on the vehicle based on the disconnection state of the first relay, and / or the vehicle controller is controlled to perform emergency power-down on the vehicle according to the power-down signal. If it is determined that the vehicle controller does not exit the preparation state in response to the power-down signal within a first preset time period, or it is detected that the first relay is not disconnected, the vehicle maintains the current running state unchanged.

9. An electronic device, comprising: The electronic device comprises: a processor; a memory, wherein the memory stores computer readable instructions, and the computer readable instructions are executed by the processor to implement the method according to any one of claims 1 to 7.

10. A computer readable storage medium, characterized in that, The computer readable storage medium stores program codes, and the program codes are called and executed by the processor to implement the method according to any one of claims 1 to 7.

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