CN115123273A

CN115123273A - New energy vehicle safety protection method and device, vehicle and storage medium

Info

Publication number: CN115123273A
Application number: CN202111639030.3A
Authority: CN
Inventors: 张博; 刘帅
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-09-30
Also published as: WO2023125127A1

Abstract

The application provides a new energy vehicle safety protection method, a new energy vehicle safety protection device, a new energy vehicle and a storage medium. The new energy vehicle comprises a rear axle gearbox, and the safety protection method of the new energy vehicle comprises the following steps: detecting whether a preset abnormal condition occurs to the new energy vehicle; the preset abnormal condition comprises at least one of rear axle gearbox overspeed fault, collision accident, high-pressure interlocking fault and rear wheel locking fault; if the new energy vehicle is detected to have a preset abnormal condition, generating a gear-disengaging control instruction, and sending the gear-disengaging control instruction to a rear axle gearbox controller; and the gear-disengaging control instruction is used for indicating the rear axle gearbox controller to control the rear axle gearbox to be switched from the current gear to the neutral gear. The emergency control system and the emergency control method can trigger the vehicle to be out of gear when the vehicle is in an emergency abnormal condition, can enable the vehicle to stop running in time, prevent further vehicle accidents, prevent the condition that the abnormal condition is more serious, and can improve safety.

Description

New energy vehicle safety protection method and device, vehicle and storage medium

Technical Field

The application relates to the technical field of new energy vehicles, in particular to a new energy vehicle safety protection method, a new energy vehicle safety protection device, a new energy vehicle and a storage medium.

Background

New energy vehicles typically use non-conventional vehicle fuels as a power source or, alternatively, use conventional vehicle fuels and employ a new vehicle-mounted power plant. The new energy vehicles include hybrid vehicles, pure electric vehicles, fuel cell electric vehicles, other new energy vehicles, and the like.

At present, when an abnormal condition occurs in a new energy vehicle, a method of limiting torque is generally adopted to perform emergency control on the vehicle. However, the method of limiting the torque requires a certain time to stop the vehicle, and during this time, the abnormal condition may be more serious and the safety may be poor.

Disclosure of Invention

The application provides a new energy vehicle safety protection method, a new energy vehicle safety protection device, a new energy vehicle and a storage medium, and aims to solve the problem that in the prior art, abnormal conditions can be serious, and safety is poor.

In a first aspect, the application provides a new energy vehicle safety protection method, where the new energy vehicle includes a rear axle transmission case, and the new energy vehicle safety protection method includes:

detecting whether a preset abnormal condition occurs in the new energy vehicle; the preset abnormal condition comprises at least one of rear axle gearbox overspeed fault, collision accident, high-pressure interlocking fault and rear wheel locking fault;

if the new energy vehicle is detected to have a preset abnormal condition, generating a gear-disengaging control instruction, and sending the gear-disengaging control instruction to a rear axle gearbox controller; the gear-out control instruction is used for instructing the rear axle gearbox controller to control the rear axle gearbox to switch from the current gear to the neutral gear.

In one possible implementation manner, the detecting whether the new energy vehicle has the preset abnormal condition includes:

acquiring the rotating speed of a rear axle gearbox;

if the rotating speed of the rear axle gearbox is greater than a first preset rotating speed or the rotating speed of the rear axle gearbox meets a preset condition, determining that the new energy vehicle has a preset abnormal condition;

the preset conditions are that the rotating speed of the rear axle gearbox is greater than a second preset rotating speed, and the duration of the rotating speed of the rear axle gearbox which is greater than the second preset rotating speed is greater than a preset duration; the first preset rotating speed is greater than the second preset rotating speed.

and if the collision signal sent by the safety airbag module of the new energy vehicle is received, determining that the new energy vehicle has a preset abnormal condition.

and if a high-voltage interlocking fault signal sent by a battery management system of the new energy vehicle is received, determining that the new energy vehicle has a preset abnormal condition.

acquiring the wheel speed of a front wheel of the new energy vehicle, the wheel speed of a rear wheel of the new energy vehicle and the vehicle speed of the new energy vehicle;

if the wheel speed of a front wheel of the new energy vehicle is greater than a first preset wheel speed threshold value, the wheel speed of a rear wheel of the new energy vehicle is less than a second preset wheel speed threshold value, and the vehicle speed of the new energy vehicle is greater than a preset vehicle speed threshold value, determining that a preset abnormal condition occurs in the new energy vehicle;

wherein the first preset wheel speed threshold is greater than the second preset wheel speed threshold.

In one possible implementation manner, if the wheel speed of a front wheel of the new energy vehicle is greater than a first preset wheel speed threshold, the wheel speed of a rear wheel of the new energy vehicle is less than a second preset wheel speed threshold, and the vehicle speed of the new energy vehicle is greater than a preset vehicle speed threshold, it is determined that a preset abnormal condition occurs in the new energy vehicle, including:

and if the wheel speed of the front wheel of the new energy vehicle is greater than a first preset wheel speed threshold value, the wheel speed of the rear wheel of the new energy vehicle is less than a second preset wheel speed threshold value, the vehicle speed of the new energy vehicle is greater than a preset vehicle speed threshold value, and a P4 motor fault signal is received, determining that a preset abnormal condition occurs in the new energy vehicle.

In a second aspect, the application provides a new energy vehicle safety arrangement, and the new energy vehicle includes rear axle gearbox, and new energy vehicle safety arrangement includes:

the detection module is used for detecting whether a preset abnormal condition occurs to the new energy vehicle; the preset abnormal condition comprises at least one of rear axle gearbox overspeed fault, collision accident, high-pressure interlocking fault and rear wheel locking fault;

the control module is used for generating a gear-disengaging control instruction and sending the gear-disengaging control instruction to the rear axle gearbox controller if the new energy vehicle is detected to have a preset abnormal condition; the gear-out control instruction is used for instructing the rear axle gearbox controller to control the rear axle gearbox to switch from the current gear to the neutral gear.

In a possible implementation manner, the detection module is specifically configured to:

acquiring the rotating speed of a rear axle gearbox;

In a third aspect, the present application provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the new energy vehicle safety protection method described in the first aspect or any one of the possible implementation manners of the first aspect are implemented.

In a fourth aspect, embodiments of the present application provide a vehicle including the electronic device according to the third aspect.

In a fifth aspect, the present application provides a computer-readable storage medium, where a computer program is stored, where the computer program, when executed by a processor, implements the steps of the new energy vehicle safety protection method according to the first aspect or any one of the possible implementations of the first aspect.

The embodiment of the application provides a new energy vehicle safety protection method, a new energy vehicle safety protection device, a vehicle and a storage medium, wherein whether a preset abnormal condition occurs to the new energy vehicle is detected, whether the vehicle has at least one of a rear axle gearbox overspeed fault, a collision accident, a high-voltage interlocking fault and a rear wheel locking fault is detected, if the preset abnormal condition occurs to the new energy vehicle is detected, a gear-disengaging control instruction is generated, and the gear-disengaging control instruction is sent to a rear axle gearbox controller; the gear-disengaging control instruction is used for indicating the rear axle gearbox controller to control the rear axle gearbox to be switched to the neutral gear from the current gear, and can trigger the vehicle to disengage when the vehicle has an emergency abnormal condition, so that the vehicle can stop running in time, further vehicle accidents are prevented from being caused, the condition that the abnormal condition is more serious is prevented from occurring, and the safety can be improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a flowchart of an implementation of a new energy vehicle safety protection method provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a new energy vehicle safety protection device provided by an embodiment of the application;

fig. 3 is a schematic view of an electronic device provided in an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

To make the objects, technical solutions and advantages of the present application more apparent, the following description is given by way of example with reference to the accompanying drawings.

Referring to fig. 1, which shows a flowchart of an implementation of a new energy vehicle safety protection method provided by an embodiment of the present application, an execution subject of the method may be an electronic device, and the electronic device may be a vehicle control unit of a vehicle.

The new energy vehicle comprises a rear axle gearbox, and the method is detailed as follows:

in S101, detecting whether a preset abnormal condition occurs in the new energy vehicle; the preset abnormal condition includes at least one of a rear axle transmission case overspeed fault, a collision accident, a high-pressure interlocking fault, and a rear wheel locking fault.

The preset abnormal condition is an abnormal condition with a relatively high risk level.

In the embodiment, if at least one of a rear axle gearbox overspeed fault, a collision accident, a high-voltage interlocking fault and a rear wheel locking fault occurs to the vehicle, the vehicle is determined to have a preset abnormal condition; and if the vehicle does not have rear axle gearbox overspeed fault, collision accident, high-voltage interlocking fault and rear wheel locking fault, determining that the vehicle does not have the preset abnormal condition.

The preset abnormal condition may include at least one of an overspeed fault of the rear axle transmission, a collision accident, a high-pressure interlock fault, and a rear wheel lock-up fault, and may include other abnormal conditions with a high risk degree, which are not particularly limited herein.

The rear axle gearbox overspeed fault means that the rotating speed of the rear axle gearbox of the vehicle is too high.

The collision accident is a relatively serious collision accident in which a vehicle collides with another vehicle or another accident.

High-voltage interlock failures are common failures of new energy vehicles. High voltage components of a vehicle (and their connectors) should have a high voltage interlock. The high voltage interlock functions to verify the integrity of the entire high voltage electrical system using a small current of 12V, all high voltage components and harness connectors of the entire vehicle must be installed in place without short circuit or open circuit conditions. And when the high-voltage interlocking loop is detected to be disconnected or the integrity is damaged, confirming that the high-voltage interlocking fault occurs.

The rear wheel locking fault may refer to a locking fault occurring at a rear wheel of the vehicle.

In S102, if a preset abnormal condition of the new energy vehicle is detected, a gear-shifting control instruction is generated and sent to a rear axle gearbox controller; the gear-out control instruction is used for instructing the rear axle gearbox controller to control the rear axle gearbox to switch from the current gear to the neutral gear.

In this embodiment, if a preset abnormal condition of the vehicle is detected, an emergency gear-off request is triggered, a gear-off control command is generated, and the gear-off control command is sent to the rear axle gearbox controller. After receiving the gear-disengaging control instruction, the rear axle gearbox controller controls the rear axle gearbox to disengage from the current gear to the neutral gear, specifically, the rear axle gearbox controller may send a corresponding instruction to an execution mechanism of the rear axle gearbox, and the execution mechanism executes the instruction to cause the rear axle gearbox to disengage from the current gear to the neutral gear.

The new energy vehicle comprises a rear axle gearbox and a rear axle motor (namely a P4 motor). And a power battery of the new energy vehicle supplies power to the rear axle motor, so that the rear axle motor outputs power. The rear axle motor is an independent mechanism, and the factors of an engine do not need to be considered, so that the rear axle gearbox is controlled to be switched to a neutral gear, and the rear axle can lose power.

In the embodiment, whether a preset abnormal condition occurs to the new energy vehicle is detected, specifically, whether the vehicle has at least one of a rear axle gearbox overspeed fault, a collision accident, a high-voltage interlocking fault and a rear wheel locking fault is detected, if the preset abnormal condition occurs to the new energy vehicle is detected, a gear-disengaging control instruction is generated, and the gear-disengaging control instruction is sent to a rear axle gearbox controller; the gear-disengaging control instruction is used for indicating a rear axle gearbox controller to control a rear axle gearbox to be switched to a neutral gear from a current gear, and can trigger the vehicle to disengage when the vehicle is in an emergency abnormal condition, so that the vehicle can stop running in time, further vehicle accidents are prevented from being caused, the condition that the abnormal condition is more serious is prevented from occurring, the safety can be improved, hardware (for example, the rear axle gearbox and the like) can be protected, the hardware damage is avoided, and the service life of a new energy vehicle is prolonged.

In some embodiments, the S101 may include:

acquiring the rotating speed of a rear axle gearbox;

In this embodiment, if the rotation speed of the rear axle gearbox is greater than a first preset rotation speed, or the rotation speed of the rear axle gearbox meets a preset condition, it is determined that the rear axle gearbox overspeed fault occurs in the new energy vehicle, and it is determined that the new energy vehicle has a preset abnormal condition; if the rotating speed of the rear axle gearbox is not greater than the first preset rotating speed and the rotating speed of the rear axle gearbox does not meet the preset conditions, the fact that the rear axle gearbox of the new energy vehicle does not have the overspeed fault is determined, but whether at least one of a collision accident, a high-voltage interlocking fault and a rear wheel locking fault occurs to the vehicle is detected, and then whether the new energy vehicle has the preset abnormal condition can be determined.

The first preset rotating speed, the second preset rotating speed and the preset duration can be set according to actual requirements. In one possible implementation, the first preset speed may be 17500 rpm.

The rotational speed of the rear axle gearbox generally has a reasonable rotational speed range within which the rear axle gearbox is in a normal state and cannot be damaged or the like. When the rotating speed of the rear axle gearbox is too high and exceeds the rotating speed range, the rear axle gearbox is possibly abnormal, and the rear axle gearbox is possibly damaged due to the too high rotating speed, so that the service life and the durability of the rear axle gearbox are influenced. The first preset rotating speed can be the highest value in the reasonable rotating speed range, and correspondingly, the second preset rotating speed can be a rotating speed value slightly lower than the highest value; alternatively, the first predetermined rotational speed may be a rotational speed value slightly higher than the maximum value, and correspondingly, the second predetermined rotational speed may be the maximum value, and so on.

In the embodiment, when the rear axle gearbox overspeed fault occurs, a gear-disengaging control instruction is generated and sent to a rear axle gearbox controller; the gear-disengaging control instruction is used for indicating a rear axle gearbox controller to control the rear axle gearbox to be switched to a neutral gear from a current gear, so that the rear axle gearbox can be protected, the rear axle gearbox is prevented from being damaged in a high-speed operation process, the service life of the rear axle gearbox can be prolonged, and the durability of the rear axle gearbox is improved.

In some embodiments, the S101 may include:

and if a collision signal sent by an Air Bag Module (ABM) of the new energy vehicle is received, determining that the new energy vehicle has a preset abnormal condition.

In this embodiment, when a serious collision accident occurs to the new energy vehicle, the ABM is triggered, and the ABM may generate a collision signal and send the collision signal to the vehicle control unit. Therefore, when the vehicle control unit receives the collision signal sent by the ABM, the vehicle control unit can determine that the new energy vehicle has a serious collision accident, namely, the new energy vehicle has a preset abnormal condition. If the collision signal sent by the ABM is not received, the fact that the vehicle is not in a serious collision accident requiring emergency gear-off is determined, and whether the vehicle is in a preset abnormal condition or not is determined only by detecting whether the vehicle is in at least one of rear axle gearbox overspeed fault, high-voltage interlocking fault and rear wheel locking fault or not.

When a more serious collision accident occurs, if the rear axle gearbox is still in a gear, namely not in a neutral gear, the vehicle can still continue to drive forwards at the moment, and the accident can be further expanded; in addition, when a serious collision accident occurs, if the rear axle gearbox is still in gear, that is, not in neutral, at the moment, a gear shifting fork or a gear and the like in the rear axle gearbox may be blocked, so that the vehicle cannot be pushed, the vehicle cannot move to a safe area, and the passing of other vehicles is influenced.

In the embodiment, when a collision signal sent by an ABM is received, a gear-disengaging control instruction is generated and sent to a rear axle gearbox controller; the gear-out control instruction is used for indicating a rear axle gearbox controller to control the rear axle gearbox to be switched to a neutral gear from a current gear, so that the vehicle can stop running in time, collision accidents are prevented from further expanding, the vehicle in the neutral gear can be moved to a safe area, secondary accidents are prevented, and the passing of other vehicles is not influenced.

In some embodiments, the S101 may include:

if a high-voltage interlocking fault signal sent by a Battery Management System (BMS) of the new energy vehicle is received, it is determined that a preset abnormal condition occurs in the new energy vehicle.

In this embodiment, the BMS may detect whether a high-voltage interlock fault occurs in real time, and may send a high-voltage interlock fault signal to the vehicle control unit if the BMS detects the high-voltage interlock fault. Therefore, when the vehicle control unit receives the high-voltage interlocking fault signal sent by the BMS, the vehicle can be determined to have the high-voltage interlocking fault, namely, the vehicle can be determined to have the preset abnormal condition. If the high-voltage interlocking fault signal sent by the BMS is not received, the fact that the vehicle has no high-voltage interlocking fault is determined, but whether the vehicle has at least one of rear axle gearbox overspeed fault, collision accident and wheel locking fault or not is detected, and whether the vehicle has a preset abnormal condition or not can be determined.

When the new energy vehicle is detected to have a high-voltage interlocking fault, the high-voltage interlocking loop inside the new energy vehicle is abnormal, so that the power output of the motor is possibly caused to be problematic, and further, the new energy vehicle is caused to have an accident. Therefore, in the embodiment, when a high-voltage interlocking fault signal sent by the BMS is received, a gear-out control instruction is generated and sent to the rear axle gearbox controller; the gear-disengaging control instruction is used for indicating the rear axle gearbox controller to control the rear axle gearbox to be switched from the current gear to the neutral gear, so that the accident possibly caused by the high-voltage interlocking fault can be avoided.

In some embodiments, the S101 may include:

The wheel speed of the front wheel may be the wheel speed of any one front wheel, or may be the average wheel speed of two front wheels. The rear wheel speed may be the wheel speed of any one rear wheel or the average wheel speed of two rear wheels.

The difference between the first preset wheel speed threshold and the second preset wheel speed threshold is large, the second preset wheel speed threshold is a wheel speed value close to 0, and the first preset wheel speed threshold is a wheel speed value matched with the preset vehicle speed threshold. The first preset wheel speed threshold, the second preset wheel speed threshold and the preset vehicle speed threshold may be set according to actual requirements, and are not specifically limited herein.

If the wheel speed of the front wheel of the new energy vehicle is greater than a first preset wheel speed threshold value, the wheel speed of the rear wheel of the new energy vehicle is less than a second preset wheel speed threshold value, and the vehicle speed of the new energy vehicle is greater than a preset vehicle speed threshold value, namely the new energy vehicle runs at a certain vehicle speed, but the wheel speed difference between the front wheel and the rear wheel of the new energy vehicle is large, the front wheel runs normally, the rear wheel hardly rotates, at the moment, locking of the rear wheel can be determined, namely, a locking fault of the rear wheel is determined to occur, and therefore it can be determined that a preset abnormal condition occurs to the vehicle. If the wheel speed of the front wheel of the new energy vehicle is not greater than a first preset wheel speed threshold, or the wheel speed of the rear wheel of the new energy vehicle is not less than a second preset wheel speed threshold, or the vehicle speed of the new energy vehicle is not greater than a preset vehicle speed threshold, determining that no rear wheel locking fault occurs, and detecting whether the vehicle has at least one of a rear axle gearbox overspeed fault, a collision accident and a high-voltage interlocking fault, so as to determine whether the vehicle has a preset abnormal condition.

In some embodiments, the determining that the new energy vehicle has the preset abnormal condition if the wheel speed of the front wheel of the new energy vehicle is greater than the first preset wheel speed threshold, the wheel speed of the rear wheel of the new energy vehicle is less than the second preset wheel speed threshold, and the vehicle speed of the new energy vehicle is greater than the preset vehicle speed threshold may include:

The wheel speed and the vehicle speed are detected by corresponding sensors, and the sensors are prone to faults, so that the detection result of the wheel speed or the vehicle speed is inaccurate, for example, when the rear wheel operates normally, the wheel speed of the rear wheel is possibly detected to be 0, and the problem of false alarm of locking faults of the rear wheel is possibly caused. Therefore, in order to improve the accuracy of the wheel locking fault detection, the present embodiment further determines whether a rear wheel locking fault occurs by whether a P4 motor fault signal is received.

When the wheel speed of a front wheel of the new energy vehicle is larger than a first preset wheel speed threshold value, the wheel speed of a rear wheel of the new energy vehicle is smaller than a second preset wheel speed threshold value, the vehicle speed of the new energy vehicle is larger than a preset vehicle speed threshold value, and a P4 motor fault signal is received, it is determined that the rear wheel is locked, and it is determined that the new energy vehicle has a rear wheel locking fault, so that it is determined that the vehicle has a preset abnormal condition. If the wheel speed of the front wheel of the new energy vehicle is not greater than a first preset wheel speed threshold value, or the wheel speed of the rear wheel of the new energy vehicle is not less than a second preset wheel speed threshold value, or the vehicle speed of the new energy vehicle is not greater than a preset vehicle speed threshold value, or a P4 motor fault signal is not received, it is determined that no rear wheel locking fault occurs, but at least one of a rear axle gearbox overspeed fault, a collision accident and a high-voltage interlocking fault is detected whether the new energy vehicle occurs, so that whether the vehicle has a preset abnormal condition can be determined.

The P4 motor is a motor located on the rear axle, and when the rear wheel is locked, the P4 motor reports a fault. The P4 motor fault signal can be sent to the vehicle control unit through the rear axle motor controller.

When a rear wheel locking fault occurs in the new energy vehicle, the most probable reason is that the rear axle gearbox is abnormal, so that when the rear wheel locking fault of the new energy vehicle is detected, an out-of-gear control instruction is generated and sent to the rear axle gearbox controller; the gear-disengaging control instruction is used for indicating the rear axle gearbox controller to control the rear axle gearbox to be switched to the neutral gear from the current gear, so that the rear axle gearbox can be protected from further damage, and accidents possibly caused by wheel locking faults can be avoided.

This embodiment can be when the vehicle emergence emergency, promptly take off the neutral gear to the vehicle rear axle, and the trouble and the vehicle abnormal conditions that have considered whole car to take place provide the intervention of security for the vehicle, can improve the security performance of vehicle, prevent to cause the vehicle accident, and protection driver's life safety can also protect the inside spare part of vehicle, prevents that it from taking place to damage, can promote whole car life-span.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The following are apparatus embodiments of the present application, and for details not described in detail therein, reference may be made to the corresponding method embodiments described above.

Fig. 2 shows a schematic structural diagram of a new energy vehicle safety protection device provided in an embodiment of the present application, and for convenience of description, only parts related to the embodiment of the present application are shown, and detailed descriptions are as follows:

the new energy vehicle comprises a rear axle gearbox. As shown in fig. 2, the new energy vehicle safety protection device 30 includes: a detection module 31 and a control module 32.

The detection module 31 is used for detecting whether a preset abnormal condition occurs in the new energy vehicle; the preset abnormal condition comprises at least one of rear axle gearbox overspeed fault, collision accident, high-pressure interlocking fault and rear wheel locking fault;

the control module 32 is configured to generate a gear-shifting control instruction if a preset abnormal condition of the new energy vehicle is detected, and send the gear-shifting control instruction to the rear axle gearbox controller; the gear-out control instruction is used for instructing the rear axle gearbox controller to control the rear axle gearbox to switch from the current gear to the neutral gear.

The method comprises the steps that whether a new energy vehicle has a preset abnormal condition or not is detected through a detection module, specifically, whether the vehicle has at least one of a rear axle gearbox overspeed fault, a collision accident, a high-voltage interlocking fault and a wheel locking fault or not is detected, and when the new energy vehicle is detected to have the preset abnormal condition through a control module, a gear-disengaging control instruction is generated and sent to a rear axle gearbox controller; the gear-disengaging control instruction is used for indicating the rear axle gearbox controller to control the rear axle gearbox to be switched to the neutral gear from the current gear, and can trigger the vehicle to disengage when the vehicle has an emergency abnormal condition, so that the vehicle can stop running in time, further vehicle accidents are prevented, the condition that the abnormal condition is more serious is prevented, and the safety can be improved.

In a possible implementation manner, the detection module 31 is specifically configured to:

acquiring the rotating speed of a rear axle gearbox;

if the wheel speed of the front wheel of the new energy vehicle is greater than a first preset wheel speed threshold value, the wheel speed of the rear wheel of the new energy vehicle is less than a second preset wheel speed threshold value, and the vehicle speed of the new energy vehicle is greater than a preset vehicle speed threshold value, determining that a preset abnormal condition occurs in the new energy vehicle;

The present application further provides a computer program product having a program code, which when executed in a corresponding processor, controller, computing device or electronic device, executes the steps in any one of the above-mentioned new energy vehicle safety protection method embodiments, such as S101 to S102 shown in fig. 1. Those skilled in the art will appreciate that the methods presented in the embodiments of the present application and the apparatus pertaining thereto may be implemented in various forms of hardware, software, firmware, special purpose processors, or a combination thereof. The special-purpose processor may include an Application Specific Integrated Circuit (ASIC), a Reduced Instruction Set Computer (RISC), and/or a Field Programmable Gate Array (FPGA). The proposed method and apparatus are preferably implemented as a combination of hardware and software. The software is preferably installed as an application program on a program storage device. It is typically a machine based computer platform having hardware such as one or more Central Processing Units (CPU), a Random Access Memory (RAM), and one or more input/output (I/O) interfaces. An operating system is also typically installed on the computer platform. The various processes and functions described herein may either be part of an application program or part of it may be executed by an operating system.

Fig. 3 is a schematic diagram of an electronic device provided in an embodiment of the present application. As shown in fig. 3, the electronic apparatus 4 of this embodiment includes: a processor 40, a memory 41 and a computer program 42 stored in said memory 41 and executable on said processor 40. The processor 40 implements the steps in each new energy vehicle safety protection method embodiment described above, for example, S101 to S102 shown in fig. 1, when executing the computer program 42. Alternatively, the processor 40, when executing the computer program 42, implements the functions of the modules/units in the above-mentioned device embodiments, such as the modules/units 31 to 32 shown in fig. 2.

Illustratively, the computer program 42 may be partitioned into one or more modules/units, which are stored in the memory 41 and executed by the processor 40 to implement the scheme provided herein. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 42 in the electronic device 4. For example, the computer program 42 may be divided into the modules/units 31 to 32 shown in fig. 2.

The electronic device 4 may be a vehicle control unit or the like. The electronic device 4 may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 3 is merely an example of the electronic device 4 and does not constitute a limitation of the electronic device 4 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the electronic device may also include input-output devices, network access devices, buses, etc.

The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, 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, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 41 may be an internal storage unit of the electronic device 4, such as a hard disk or a memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the electronic device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 41 is used for storing the computer program and other programs and data required by the electronic device. The memory 41 may also be used to temporarily store data that has been output or is to be output.

Corresponding to the electronic equipment, the embodiment of the application also provides a vehicle which comprises the electronic equipment and has the same beneficial effects as the electronic equipment.

It should be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is only used for illustration, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other ways. For example, the above-described apparatus/electronic device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated module/unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above may be implemented by a computer program, which may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the embodiments of the new energy vehicle safety protection method described above may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.

Furthermore, features of the embodiments shown in the drawings of the present application or of the various embodiments mentioned in the present description are not necessarily to be understood as embodiments independent of each other. Rather, each feature described in one example of one embodiment can be combined with one or more other desired features from other embodiments to yield yet further embodiments described in text or with reference to the figures.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. The safety protection method for the new energy vehicle is characterized by comprising the following steps of:

detecting whether a preset abnormal condition occurs to the new energy vehicle; the preset abnormal condition comprises at least one of an overspeed fault of a rear axle gearbox, a collision accident, a high-voltage interlocking fault and a rear wheel locking fault;

if the new energy vehicle is detected to have the preset abnormal condition, generating a gear-disengaging control instruction, and sending the gear-disengaging control instruction to a rear axle gearbox controller; and the gear-disengaging control instruction is used for indicating the rear axle gearbox controller to control the rear axle gearbox to be switched from the current gear to the neutral gear.

2. The safety protection method for the new energy vehicle according to claim 1, wherein the step of detecting whether the new energy vehicle has a preset abnormal condition comprises the following steps:

acquiring the rotating speed of the rear axle gearbox;

the preset condition is that the rotating speed of the rear axle gearbox is greater than a second preset rotating speed, and the duration of the rotating speed of the rear axle gearbox which is greater than the second preset rotating speed is greater than a preset duration; the first preset rotating speed is greater than the second preset rotating speed.

3. The safety protection method for the new energy vehicle according to claim 1, wherein the step of detecting whether the new energy vehicle has a preset abnormal condition comprises the following steps:

and if a collision signal sent by an airbag module of the new energy vehicle is received, determining that a preset abnormal condition occurs in the new energy vehicle.

4. The safety protection method for the new energy vehicle according to claim 1, wherein the step of detecting whether the new energy vehicle has a preset abnormal condition comprises the following steps:

and if a high-voltage interlocking fault signal sent by a battery management system of the new energy vehicle is received, determining that a preset abnormal condition occurs in the new energy vehicle.

5. The safety protection method for the new energy vehicle according to claim 1, wherein the step of detecting whether the new energy vehicle has a preset abnormal condition comprises the following steps:

6. The safety protection method for the new energy vehicle according to claim 5, wherein if the wheel speed of the front wheel of the new energy vehicle is greater than a first preset wheel speed threshold, the wheel speed of the rear wheel of the new energy vehicle is less than a second preset wheel speed threshold, and the vehicle speed of the new energy vehicle is greater than a preset vehicle speed threshold, determining that a preset abnormal condition occurs in the new energy vehicle comprises:

7. A new energy vehicle safety arrangement, its characterized in that, new energy vehicle includes rear axle gear box, new energy vehicle safety arrangement includes:

the detection module is used for detecting whether the new energy vehicle has a preset abnormal condition or not; the preset abnormal condition comprises at least one of rear axle gearbox overspeed fault, collision accident, high-voltage interlocking fault and rear wheel locking fault;

the control module is used for generating a gear-disengaging control instruction if the new energy vehicle is detected to have the preset abnormal condition, and sending the gear-disengaging control instruction to the rear axle gearbox controller; and the gear-disengaging control instruction is used for indicating the rear axle gearbox controller to control the rear axle gearbox to be switched from the current gear to the neutral gear.

8. An electronic device 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 new energy vehicle safety protection method according to any one of claims 1 to 6 when executing the computer program.

9. A vehicle characterized by comprising the electronic apparatus of claim 8.

10. A computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the steps of the new energy vehicle safety protection method according to any one of claims 1 to 6.