A pure electric vehicle speed processing control method and related device

Abstract

The present application relates to pure electric vehicle speed control technical field, specifically to a kind of pure electric vehicle speed processing control method and related equipment.The steps of the method include after the whole vehicle is powered on, the actual driving state of the whole vehicle is judged according to vehicle information;The standby vehicle speed value is determined based on the actual driving state of the whole vehicle;The vehicle speed safety strategy is started according to the standby vehicle speed value, and the pure electric vehicle speed processing control is carried out through the vehicle speed safety strategy.The present application estimates the approximate true speed by calculating the wheel edge speed through motor torque and speed.Following the failure of brake system speed or wheel speed, this method strategy can keep the longitudinal and lateral control system of vehicle working normally, thereby improving the functional safety level of vehicle and reducing the unexpected loss of vehicle lateral and longitudinal control.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pure electric vehicle speed control, in particular to a pure electric vehicle speed processing control method and related equipment. BACKGROUND

[0002] In today's global automotive industry, the market share of pure electric vehicles (EVs) is experiencing unprecedented rapid growth, thanks to the continuous progress of technology, the enhancement of environmental awareness, and the active promotion of government policies. The popularity of pure electric vehicles not only marks a major step towards the electrification of the automotive industry, but also brings about a leap in intelligent technology, leading to an explosive growth in the development of vehicle electrical functions. As vehicle electrical systems become increasingly complex and integrated, ensuring the reliability of their hardware and software has become a key factor in ensuring driving safety and improving user experience.

[0003] To address this challenge, domestic and foreign regulatory agencies have introduced a series of strict regulations and standards that explicitly require the functional safety of automotive electrical systems. These standards aim to prevent potential hazards caused by system failures or abnormal operations, ensuring that vehicles maintain a safe and stable operating state under various working conditions. Among them, vehicle speed information, as one of the most basic state parameters of a car, is crucial for the lateral (such as steering control) and longitudinal (such as acceleration and braking control) functions of the vehicle. Any deviation or loss of vehicle speed signals can directly affect the driving stability and safety of the vehicle.

[0004] However, in the current pure electric vehicle electrical system, there are still a series of technical problems caused by vehicle speed information-related issues, which are manifested in the following aspects:

[0005] 1. Electrical fault of the braking system: As a key component of vehicle safety, any failure of the electrical part of the braking system can have serious consequences. For example, a serial peripheral interface (SPI) communication error in the printed circuit board (PCB) may cause wheel speed data to be unable to be transmitted correctly, or a failure of the power management circuit may directly cause the complete loss of vehicle speed information. These problems not only affect braking performance, but also may trigger a series of chain reactions, endangering driving safety.

[0006] 2. Controller Area Network (CAN) Communication Failure: As the main channel for information exchange within modern automobiles, the stability and reliability of the CAN network directly affect the normal operation of various vehicle functions. In practical applications, due to reasons such as detached terminating resistors or poor contact of wiring pins, the CAN line for the vehicle speed signal may enter an offline state (BUS OFF), preventing the vehicle speed information from being transmitted to the vehicle control system in a timely and accurate manner, thereby affecting the overall performance and safety of the vehicle.

[0007] 3. Unstable vehicle voltage or electromagnetic compatibility (EMC) interference: In the complex electrical environment of electric vehicles, voltage fluctuations and electromagnetic interference are common problems. These factors may cause wheel speed sensors to malfunction, producing false alarms or missed alarms, thus affecting the accuracy and reliability of vehicle speed information. This effect may be more significant, especially at high speeds or in adverse road conditions, further increasing driving risks.

[0008] Research and solutions to issues related to vehicle speed information in the electrical systems of pure electric vehicles are not only crucial for improving overall vehicle performance, but also essential for ensuring driving safety and promoting the sustainable development of the automotive industry. Therefore, developing efficient and reliable vehicle speed information processing and fault detection mechanisms has become one of the key research directions for automotive electrical systems in the present and for some time to come. Summary of the Invention

[0009] The purpose of this invention is to provide a method and related equipment for controlling the speed of a pure electric vehicle, so as to solve the technical problem of how to control the speed of a pure electric vehicle in order to improve the driving safety of the vehicle.

[0010] This invention is achieved through the following technical solution:

[0011] In a first aspect, the present invention provides a method for speed control of a pure electric vehicle, comprising:

[0012] After the vehicle is powered on, the actual driving status of the vehicle is determined based on the vehicle information;

[0013] The backup vehicle speed value is determined based on the actual driving status of the vehicle.

[0014] The vehicle speed safety strategy is activated based on the backup vehicle speed value, and the vehicle speed of the pure electric vehicle is controlled through the vehicle speed safety strategy.

[0015] Preferably, the vehicle information includes motor speed, gear information, motor torque, and vehicle speed or wheel speed, wherein when the motor speed, gear information, motor torque, and vehicle speed or wheel speed meet the conditions of the normal running state of the whole vehicle, it is the actual driving state.

[0016] Preferably, in the step of determining the standby vehicle speed value based on the actual driving state of the whole vehicle, the determination process of the standby vehicle speed value is as follows:

[0017] A speed threshold is set, when the vehicle speed is lower than the speed threshold, it is a low-speed driving state, and the standby vehicle speed value is calculated and calibrated according to the motor output torque; when the vehicle speed is higher than the speed threshold, it is a high-speed driving state, and the standby vehicle speed value is calculated and calibrated according to the motor speed, the transmission ratio of the reducer, and the rolling radius of the tire.

[0018] Preferably, in the step of starting the vehicle speed safety strategy according to the standby vehicle speed value, the conditions of the vehicle speed safety strategy include starting the standby vehicle speed value when the vehicle speed and wheel speed of the vehicle braking system are in a fault state, when the vehicle wheel speed or vehicle speed and the standby vehicle speed have a large difference, and when the vehicle wheel speed or vehicle speed exceeds the normal limit or change rate of the whole vehicle.

[0019] Further, when the vehicle speed and wheel speed of the vehicle braking system are in a fault state, the EPS controller, IHU controller, and ESC controller of the whole vehicle process and work according to the standby vehicle speed value, and perform degraded work on part of the functions, wherein the degraded work on part of the functions includes disabling ADAS prompt, lane function, and steep slope relief function, limiting the maximum vehicle speed, and limiting the speed and current of the driving motor.

[0020] Further, when the vehicle wheel speed or vehicle speed and the standby vehicle speed have a large difference, if the time threshold is normally met and the tire pressure is normal, the standby vehicle speed value is started, and the maximum vehicle speed and power response of the whole vehicle are limited.

[0021] Further, when the vehicle wheel speed or vehicle speed exceeds the normal limit or change rate of the whole vehicle, the standby vehicle speed value is started, and the maximum vehicle speed and power response of the whole vehicle are limited.

[0022] In a second aspect, the application also provides a pure electric vehicle speed processing control system, which comprises:

[0023] A state judgment module is used to judge the actual driving state of the whole vehicle according to vehicle information after the whole vehicle is powered on.

[0024] A data determination module is used to determine a standby vehicle speed value based on the actual driving state of the whole vehicle.

[0025] A starting module is used to start a vehicle speed safety strategy according to the standby vehicle speed value, and the pure electric vehicle speed processing control is performed through the vehicle speed safety strategy.

[0026] In a third aspect, the present application also provides a mobile terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the pure electric vehicle speed processing control method as described above when executing the computer program.

[0027] In a fourth aspect, the present application also provides a computer readable storage medium, which stores a computer program, wherein the computer program implements the steps of the pure electric vehicle speed processing control method as described above when executed by a processor.

[0028] Compared with the prior art, the present application has the following beneficial technical effects:

[0029] The present application provides a pure electric vehicle speed processing control method, which determines the actual driving state of the vehicle according to vehicle information, and determines a standby speed value based on the actual driving state, which can be used as a safety threshold for speed control to ensure that the vehicle can operate within a relatively safe speed range under various conditions. According to the standby speed value range, speed safety strategies such as speed limit, deceleration or emergency braking can be started, which can further reduce the risk of traffic accidents caused by excessive speed or slow speed. The present application calculates the wheel speed by the motor torque and speed, and then estimates the approximate true speed. This method strategy can keep the longitudinal and lateral control systems of the vehicle working normally in the case of brake system speed or wheel speed failure, thereby improving the functional safety level of the vehicle and reducing the unintended loss of vehicle lateral and longitudinal control.

[0030] Further, by setting a speed threshold, the system can clearly distinguish between low-speed and high-speed driving states, so as to take more accurate speed control strategies. In the low-speed state, the standby speed value is calculated by using the motor output torque, which can more accurately reflect the power performance and acceleration ability of the vehicle when driving at low speed. In the high-speed state, the standby speed value is calculated by using the motor speed, the transmission ratio of the reducer and the rolling radius of the tire, which can more accurately reflect the stability and safety of the vehicle when driving at high speed.

[0031] Further, in the case of speed and wheel speed failure of the vehicle braking system, the standby speed value can be used as an emergency safety measure to ensure that the vehicle can still maintain certain speed control when the braking system fails. The standby speed value provides a reliable speed reference, which helps the driver or automatic driving system to take appropriate deceleration or braking measures to reduce the risk of accidents, and helps to maintain the stability of the vehicle to prevent loss of control or skidding due to braking failure.

[0032] Further, in the case of a large difference between the vehicle wheel speed or vehicle speed and the backup vehicle speed, when the wheel speed or vehicle speed sensor fails or the data is abnormal, the backup vehicle speed value provides a verification benchmark for detecting and correcting possible erroneous data. By comparing the difference between the actual vehicle speed and the backup vehicle speed, the system can identify sensor failure or data error and take appropriate measures such as warning, deceleration or switching to a safe mode, which helps to ensure that the vehicle can maintain accurate speed control in any situation and improve driving safety.

[0033] Further, in the case of a large difference between the vehicle wheel speed or vehicle speed and the backup vehicle speed, when the wheel speed or vehicle speed sensor fails or the data is abnormal, the backup vehicle speed value provides a verification benchmark for detecting and correcting possible erroneous data. By comparing the difference between the actual vehicle speed and the backup vehicle speed, the system can identify sensor failure or data error and take appropriate measures such as warning, deceleration or switching to a safe mode, which helps to ensure that the vehicle can maintain accurate speed control in any situation and improve driving safety. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A pure electric vehicle speed processing control method flowchart in the embodiment of the present application;

[0035] Figure 2 A pure electric vehicle speed processing control logic strategy diagram in the embodiment of the present application;

[0036] Figure 3 A pure electric vehicle speed processing control system principle structure diagram in the embodiment of the present application;

[0037] In the figure: 1, state judgment module; 2, data determination module; 3, starting module. DETAILED DESCRIPTION

[0038] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the scope of protection of the present application.

[0039] The purpose of the present application is to provide a pure electric vehicle speed processing control method and related equipment to solve the technical problem of how to control the speed of a pure electric vehicle in the prior art to improve the driving safety of the vehicle.

[0040] The present application will be described in further detail below in combination with the drawings:

[0041] Reference Figure 1and Figure 2 In one embodiment of the present application, a pure electric vehicle speed processing control method is provided, comprising:

[0042] Step 1, after the vehicle is powered on, the actual driving state of the vehicle is judged according to the vehicle information;

[0043] Specifically, the vehicle information includes motor speed, gear information, motor torque, and vehicle speed or wheel speed, wherein when the motor speed, gear information, motor torque, and vehicle speed or wheel speed meet the conditions of the normal running state of the vehicle, it is the actual driving state.

[0044] Step 2, determine the standby speed value based on the actual driving state of the vehicle;

[0045] Specifically, the determination process of the standby speed value is as follows:

[0046] Set a speed threshold, when the vehicle speed is lower than the speed threshold, it is a low-speed driving state, and the standby speed value is calculated and calibrated according to the motor output torque; when the vehicle speed is higher than the speed threshold, it is a high-speed driving state, and the standby speed value is calculated and calibrated according to the motor speed, the transmission ratio of the reducer, and the rolling radius of the tire.

[0047] When the vehicle speed is lower than the set speed threshold, the system judges that the vehicle is in a low-speed driving state. In this state, the standby speed value is mainly calculated and calibrated according to the output torque of the motor.

[0048] The motor output torque is a measure of the rotational force generated by the motor, which determines the acceleration and climbing ability of the vehicle. In the low-speed state, due to the low speed, the motor needs to output more torque to overcome the resistance and provide the necessary power.

[0049] By monitoring the output torque of the motor and considering the weight of the vehicle, the resistance coefficient, and the deformation of the tire, the mathematical relationship of the motor output torque maintaining a low speed is relatively linear, and its approximate mathematical proportional relationship can be obtained through real vehicle calibration measurement. The system can calculate the standby speed value required for the vehicle to maintain stable operation in the low-speed state. This value is usually a relatively low speed to ensure that the vehicle has sufficient power reserve and stability when driving at low speed. (Generally, when the vehicle speed is within 15km / s, the standby speed should be closed when the kinetic energy is recovered).

[0050] When the vehicle speed is higher than the set speed threshold, the system judges that the vehicle is in a medium-high speed driving state. In this state, the standby speed value is mainly calculated according to the motor speed, the transmission ratio of the reducer, and the rolling radius of the tire, and the compliance and error range of the related formula should be corrected according to the specific real vehicle calibration measurement results.

[0051] Motor speed is a measure of the motor's rotational speed, which determines the upper limit of the vehicle's speed. At high speeds, the motor speed is higher, and the output power also increases accordingly.

[0052] The transmission ratio of the reducer is the ratio of the input shaft speed to the output shaft speed of the reducer, which determines the conversion ratio from motor speed to wheel speed. By adjusting the transmission ratio, precise control of vehicle speed can be achieved.

[0053] The tire rolling radius is the radius of the part of the tire that contacts the ground, which affects the rolling speed of the wheels and the driving distance of the vehicle. At high speeds, the change in tire rolling radius has a more significant impact on vehicle speed.

[0054] By monitoring the motor speed, combined with the transmission ratio of the reducer and the rolling radius of the tire, the system can calculate the standby speed value required to maintain stable operation of the vehicle at high speeds. This value is usually a relatively high speed to ensure the stability and safety of the vehicle during high-speed driving.

[0055] Step 3, start the vehicle speed safety strategy according to the standby speed value, and control the pure electric vehicle speed through the vehicle speed safety strategy.

[0056] Specifically, the conditions of the vehicle speed safety strategy include enabling the standby speed value when the vehicle braking system's speed and wheel speed are in a fault state, when the vehicle's wheel speed or speed has a large difference from the standby speed, and when the vehicle's wheel speed or speed exceeds the normal limit or rate of change.

[0057] When the vehicle braking system's speed and wheel speed are in a fault state, the vehicle's EPS controller, IHU controller, and ESC controller process and work according to the standby speed value, and some functions are degraded, including ADAS prompt disable, cruise function, and steep slope relief function disabled, maximum vehicle speed limit, and drive motor speed and current limit.

[0058] In this embodiment, in the fault state of the braking system's speed and wheel speed, the EPS controller may adjust the vehicle's stability control strategy according to the standby speed value. If the fault is serious, the EPS system may reduce the auxiliary force of the vehicle's steering, or even temporarily disable some advanced driving assistance functions, to ensure that the vehicle is within a safe range. The HU controller will monitor the state of the braking system and adjust the braking strategy according to the standby speed value. In the fault state, the IHU may reduce the output of the braking force, or adjust the distribution of the braking force, to maintain the stability of the vehicle. The ESC controller is the core of the electronic stability control system, which maintains the stability of the vehicle according to sensor information such as speed and wheel speed. In the fault state, the ESC controller will limit the vehicle's driving speed according to the standby speed value to prevent the vehicle from losing control.

[0059] In this embodiment, the advanced driver assistance system (ADAS) will be disabled when the brake system fails to avoid misoperation caused by false information. Disabling ADAS can reduce the interference to the driver and reduce the potential risk caused by system failure.

[0060] The function of the low-speed driving assistance is disabled in the brake system failure state to prevent the vehicle from losing control due to insufficient braking force when driving at low speed.

[0061] The steep slope relief function is also disabled when the brake system fails to avoid the vehicle from sliding down the steep slope due to insufficient braking force.

[0062] Maximum vehicle speed limit: In the failure state, the maximum speed of the vehicle may be limited to a lower level to ensure that the vehicle is within a controllable range, which helps to reduce the risk of losing control due to excessive speed.

[0063] The speed and current of the drive motor are limited to protect the drive motor and prevent failure due to overheating or overloading of the motor, which helps to extend the service life of the motor and ensure that the vehicle can still be safely driven in the failure state.

[0064] When the vehicle wheel speed or vehicle speed is significantly different from the standby vehicle speed, the standby vehicle speed is started under normal time threshold and normal tire pressure conditions, and the maximum vehicle speed and power response are limited.

[0065] When the vehicle wheel speed or vehicle speed exceeds the normal limit or rate of change, the standby vehicle speed is started, and the maximum vehicle speed and power response are limited.

[0066] In this embodiment, only single-motor drive system vehicles have been tested on real vehicles. The road conditions at low speed have a greater impact, and the estimated speed or wheel speed based on motor torque on ordinary flat roads is relatively close to the true value. If the vehicle has multiple drive motors and reduction mechanisms, the standby vehicle speed should be further mathematically processed according to the actual situation before output. This patent is suitable for multi-motor electric vehicles, but no further expansion is described.

[0067] In summary, the embodiment provides a pure electric vehicle speed processing control method, which determines the actual driving state of the vehicle according to vehicle information, and determines a backup vehicle speed value based on the actual driving state, which can be used as a safety threshold for vehicle speed control to ensure that the vehicle can run in a relatively safe speed range under various conditions. According to the backup vehicle speed value, a vehicle speed safety strategy such as speed limit, deceleration or emergency braking can be started, which can further reduce the risk of traffic accidents caused by excessive speed or slow speed. The present application calculates the wheel speed by motor torque and speed, and then estimates the approximate true speed. This method can keep the longitudinal and lateral control systems of the vehicle working normally in the case of brake system speed or wheel speed failure, thereby improving the functional safety level of the vehicle and reducing the loss of unexpected vehicle lateral and longitudinal control.

[0068] Embodiment 2

[0069] According to Figure 3 The embodiment provides a pure electric vehicle speed processing control system, which comprises a state judgment module 1, a data determination module 2 and a starting module 3.

[0070] The state judgment module 1 is used to determine the actual driving state of the vehicle according to vehicle information after the vehicle is powered on.

[0071] The data determination module 2 is used to determine the backup vehicle speed value based on the actual driving state of the vehicle.

[0072] The starting module 3 is used to start a vehicle speed safety strategy according to the backup vehicle speed value, and the pure electric vehicle speed processing control is performed through the vehicle speed safety strategy.

[0073] Embodiment 3

[0074] The present application also provides a mobile terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, such as a pure electric vehicle speed processing control program.

[0075] The processor executes the computer program to realize the steps of the above-mentioned pure electric vehicle speed processing control method, for example:

[0076] After the vehicle is powered on, the actual driving state of the vehicle is determined according to vehicle information;

[0077] The backup vehicle speed value is determined based on the actual driving state of the vehicle;

[0078] The vehicle speed safety strategy is started according to the backup vehicle speed value, and the pure electric vehicle speed processing control is performed through the vehicle speed safety strategy.

[0079] Alternatively, the processor executes the computer program to realize the functions of the modules in the above-mentioned system, for example:

[0080] The state judging module 1 is configured to determine the actual driving state of the vehicle according to vehicle information after the vehicle is powered on.

[0081] The data determining module 2 is configured to determine a backup vehicle speed value based on the actual driving state of the vehicle.

[0082] The starting module 3 is configured to start a vehicle speed safety strategy according to the backup vehicle speed value, and perform vehicle speed processing control on the pure electric vehicle through the vehicle speed safety strategy.

[0083] For example, the computer program can be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present application. The one or more modules / units can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program in the mobile terminal.

[0084] For example, the computer program can be divided into a state judging module 1, a data determining module 2, and a starting module 3.

[0085] The specific functions of each module are as follows:

[0086] The state judging module 1 is configured to determine the actual driving state of the vehicle according to vehicle information after the vehicle is powered on.

[0087] The data determining module 2 is configured to determine a backup vehicle speed value based on the actual driving state of the vehicle.

[0088] The starting module 3 is configured to start a vehicle speed safety strategy according to the backup vehicle speed value, and perform vehicle speed processing control on the pure electric vehicle through the vehicle speed safety strategy.

[0089] The mobile terminal can be a desktop computer, a notebook, a palm computer, and a cloud server, etc. The mobile terminal can include, but is not limited to, a processor and a memory.

[0090] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The processor is a control center of the mobile terminal, which can connect all parts of the mobile terminal through various interfaces and lines.

[0091] The memory can be used to store the computer programs and / or modules, and the processor can realize various functions of the mobile terminal by running or executing the computer programs and / or modules stored in the memory, and calling data stored in the memory.

[0092] The memory can mainly include a program storage area and a data storage area. The program storage area can store an operating system, at least one application program required by a function (such as a sound playing function, an image playing function, etc.), etc. The data storage area can store data created according to the use of the mobile terminal (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a nonvolatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state memory device.

[0093] Embodiment 4

[0094] The application further provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the steps of the pure electric vehicle speed processing control method.

[0095] If the modules / units of the mobile terminal are implemented in the form of software function units and sold or used as independent products, the modules / units can be stored in a computer readable storage medium.

[0096] Based on such understanding, the present application implements all or part of the processes in the above method, and can also be instructed by a computer program to complete the relevant hardware. The computer program can be stored in a computer readable storage medium, and the computer program can implement the steps of the above-mentioned aggregated reinforcement learning resource scheduling method when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc.

[0097] The computer readable medium can include any entity or device, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. that can carry the computer program code.

[0098] It should be noted that the content contained in the computer readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0099] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application and not to limit it, although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or replaced by the equivalent, without departing from the spirit and scope of the present application, any modification or equivalent replacement, which should be covered within the protection scope of the claims of the present application.

Claims

1. A method for controlling a speed of a pure electric vehicle, characterized by, The application relates to a pure electric vehicle speed processing control method. The actual driving state of the vehicle is determined according to vehicle information after the vehicle is powered on; The standby vehicle speed value is determined based on the actual driving state of the vehicle; In the step of determining the standby vehicle speed value based on the actual driving state of the vehicle, the standby vehicle speed value is determined as follows: A speed threshold is set, when the vehicle speed is lower than the speed threshold, it is a low-speed driving state, and the standby vehicle speed value is calculated and calibrated according to the motor output torque; when the vehicle speed is higher than the speed threshold, it is a high-speed driving state, and the standby vehicle speed value is calculated and calibrated according to the motor speed, the reducer transmission ratio and the tire rolling radius; The vehicle speed safety strategy is started according to the standby vehicle speed value, and the vehicle speed processing control of the pure electric vehicle is carried out through the vehicle speed safety strategy; In the step of starting the vehicle speed safety strategy according to the standby vehicle speed value, the conditions of the vehicle speed safety strategy include starting the standby vehicle speed value when the vehicle speed and the wheel speed of the vehicle braking system are in a fault state and when the vehicle wheel speed or the vehicle speed exceeds the normal limit value of the vehicle; When the vehicle speed and the wheel speed of the vehicle braking system are in a fault state, the EPS controller, the IHU controller and the ESC controller of the vehicle process and work according to the standby vehicle speed value, and some functions are degraded, including ADAS prompt disablement, lane keeping function and steep slope slow descent function disablement, highest vehicle speed limitation and driving motor speed and current limitation.

2. The method of claim 1, wherein, The vehicle information includes motor speed, gear information, motor torque and vehicle speed or wheel speed, wherein when the motor speed, gear information, motor torque and vehicle speed or wheel speed meet the normal running state conditions of the vehicle, the actual driving state is determined.

3. The method of claim 1, wherein the method further comprises: When the vehicle wheel speed or the vehicle speed exceeds the normal limit value of the vehicle, the standby vehicle speed value is started, and the highest vehicle speed and the power response of the vehicle are limited.

4. A pure electric vehicle speed processing control system characterized by, The application relates to a pure electric vehicle speed processing control method, comprising: A state judgment module is used for determining the actual driving state of the vehicle according to vehicle information after the vehicle is powered on; A data determination module is used for determining the standby vehicle speed value based on the actual driving state of the vehicle; A starting module is used for starting the vehicle speed safety strategy according to the standby vehicle speed value, and the vehicle speed processing control of the pure electric vehicle is carried out through the vehicle speed safety strategy.

5. A mobile terminal comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the steps of the pure electric vehicle speed processing control method according to any one of claims 1-3.

6. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 5. The computer program is executed by the processor to realize the steps of the pure electric vehicle speed processing control method according to any one of claims 1-3.

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