Differential lock protection control method and device and electronic equipment

Abstract

The invention provides a differential lock protection control method and device and electronic device.The differential lock protection control method comprises the steps that under the condition that a vehicle is in a running state and a differential mechanism is in an unlocking state, running parameter information of the vehicle is obtained; according to the driving parameter information, whether the vehicle meets a preset torque limiting condition or not is judged; and when the vehicle meets the preset torque limiting condition, a torque limiting request is sent to a vehicle body electronic stability control system. The working condition of the differential mechanism of the vehicle can be monitored in real time, when the preset torque limiting condition is met, namely the wheel speed difference of the left and right wheels is too large, the torque limiting request is sent to reduce the wheel speed difference of the left and right wheels, the situation that the differential mechanism is damaged due to the fact that the wheel speed difference exceeds the range capable of being borne by the differential mechanism is avoided, and the service life of the vehicle is prolonged. And the driving safety is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a differential lock protection control method, device and electronic equipment. Background Art

[0002] With the improvement of people's living standards, cars have become an important means of transportation for people. When purchasing a vehicle, consumers not only consider the safety, comfort and economy of the vehicle, but also pay more attention to the vehicle's maneuverability and passability. The differential plays a vital role in improving the vehicle's maneuverability and passability. The differential in the unlocked state can adjust the wheel speed of the left and right wheels when the vehicle turns, so as to complete the turn smoothly. The differential in the locked state can achieve the same speed of the left and right wheels when the vehicle is off-road, avoiding wheel slippage or getting stuck. However, when the vehicle is off-road, if the wheel speed difference between the left and right wheels exceeds the range that the differential can withstand, it may damage the parts of the differential, causing the differential to lose its differential function, affecting the normal driving of the vehicle, which is very dangerous. Summary of the invention

[0003] In view of the above problems, embodiments of the present application provide a differential lock protection control method, device and electronic device that overcome the above problems or at least partially solve the above problems.

[0004] In a first aspect, an embodiment of the present application provides a differential lock protection control method, the method comprising:

[0005] When the vehicle is in a driving state and the differential is in an unlocked state, obtaining driving parameter information of the vehicle;

[0006] determining, based on the driving parameter information, whether the vehicle satisfies a preset torque limit condition;

[0007] When the vehicle meets the preset torque limit condition, a torque limit request is sent to a vehicle body electronic stability control system.

[0008] In a second aspect, an embodiment of the present application further provides a differential lock protection control device, the device comprising:

[0009] An acquisition module, used for acquiring driving parameter information of the vehicle when the vehicle is in a driving state and the differential is in an unlocked state;

[0010] A judgment module, used for judging whether the vehicle meets a preset torque limit condition according to the driving parameter information;

[0011] The first sending module is used to send a torque limit request to a vehicle body electronic stability control system when the vehicle meets the preset torque limit condition.

[0012] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the above-mentioned differential lock protection control method when executed by the processor.

[0013] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned differential lock protection control method is implemented.

[0014] The embodiments of the present application include at least the following technical effects:

[0015] The technical solution of the embodiment of the present application can monitor the working condition of the vehicle's differential in real time by acquiring driving parameter information when the vehicle is in driving state and the differential is in unlocked state, and sending a torque limit request to the body electronic stability control system when it is determined that the vehicle meets the preset torque limit condition based on the driving parameter information. When the preset torque limit condition is met, that is, the wheel speed difference between the left and right wheels is too large, a torque limit request is sent to reduce the wheel speed difference between the left and right wheels, thereby avoiding the situation where the differential is damaged due to exceeding the range that the differential can withstand, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of a differential lock protection control method provided in an embodiment of the present application;

[0017] Figure 2 is a schematic structural diagram of a differential lock protection control device provided in an embodiment of the present application;

[0018] Figure 3 A block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0021] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0022] In the prior art, differentials play a vital role in improving the handling and passability of vehicles. An unlocked differential can adjust the wheel speeds of the left and right wheels when the vehicle turns, thereby completing the turn smoothly. A locked differential can achieve the same speed of the left and right wheels when the vehicle is off-road, thus preventing the wheels from slipping or getting stuck. However, when the vehicle is off-road, if the wheel speed difference between the left and right wheels exceeds the tolerance range of the differential, the parts of the differential may be damaged, causing the differential to lose its differential function, affecting the normal driving of the vehicle, which is very dangerous.

[0023] In view of this, the present application provides a differential lock protection control method, device and electronic equipment, such as Figure 1 As shown, the differential lock protection control method includes:

[0024] Step 101: When the vehicle is in a driving state and the differential is in an unlocked state, obtaining driving parameter information of the vehicle;

[0025] The differential protection control method provided in the embodiment of the present application is applied to the differential lock controller (Electronic Locker, ELD) corresponding to the electronically controlled differential lock assembly. The differential lock assembly includes a differential lock and a differential, and the switching between the locked state and the unlocked state of the differential is achieved by changing the power-on state of the electromagnetic coil in the differential lock. When the electromagnetic coil is powered on, the differential lock is locked and the differential is in a locked state. When the electromagnetic coil is powered off, the differential lock is unlocked and the differential is in an unlocked state.

[0026] The differential lock controller can monitor the vehicle status and differential status. The vehicle status includes driving status and stationary status. The differential status includes unlocked status and locked status. When the differential is in the locked status, the differential cannot perform differential speed, and the rotation speeds of the wheels on the left and right sides are the same. When the differential is in the unlocked status, the differential can adjust the rotation speeds of the wheels on the left and right sides, so that there is a rotation speed difference between the left and right wheels.

[0027] It should be noted that when the differential is unlocked, in order to improve the vehicle's passability, the driver can press the differential lock button on the vehicle when the speed is lower than 5km / h to lock the differential, so that the differential enters the locked state, and then there is no differential between the left and right wheels. At the same time, the differential indicator light on the instrument lights up. If the driver presses the differential lock button when the speed is higher than 5km / h, the differential will not lock because the differential locking conditions are not met. At the same time, the instrument will also send a differential lock refusal signal to prompt the driver that the differential lock has failed.

[0028] It should be further explained that when the differential is in the locked state, the driver can unlock the differential by pressing the differential lock button, and the differential indicator light on the instrument will go out. In addition, when the differential is in the locked state, if the vehicle speed is greater than 30km / h and less than 40km / h, the instrument will issue an overspeed alarm signal, and the differential indicator light on the instrument will flash to prompt the driver to reduce the speed. If the vehicle speed is greater than 40km / h, in order to ensure driving safety, the system will automatically control the differential lock to unlock, so that the differential enters the unlocked state, and the differential indicator light on the instrument will go out.

[0029] When the differential lock controller detects that the vehicle is in a driving state and the differential is in an unlocked state, it indicates that the wheels on the left and right sides of the vehicle can rotate at different speeds when the vehicle turns, and automatically adjusts the speeds of the left and right wheels to speed up the outer wheel and slow down the inner wheel, thereby ensuring that the vehicle turns smoothly. At the same time, when the vehicle is off-road, the differential in an unlocked state may cause the wheel speed difference between the left and right wheels to exceed the range that the differential can withstand, thereby damaging the parts of the differential, causing the differential to lose its differential function, affecting the normal driving of the vehicle, and being very dangerous. Specifically, the embodiment of the present application can monitor the driving parameter information of the vehicle when the differential is in an unlocked state to determine the moment when the wheel speed difference between the left and right wheels exceeds the range that the differential can withstand, so that the torque limiting operation can be performed in time to avoid damaging the parts of the differential. The driving parameter information here includes the vehicle speed, the steering wheel angle, and the wheel speed corresponding to each wheel of the vehicle.

[0030] It should be noted that when a vehicle may include multiple differentials, the differential lock controller obtains the driving state information when detecting that any differential among the multiple differentials is in an unlocked state.

[0031] Step 102: Determine whether the vehicle meets a preset torque limit condition based on the driving parameter information.

[0032] In specific implementation, the differential lock controller can determine whether the vehicle meets the preset torque limit conditions based on the driving parameter information obtained in real time. When the vehicle meets the preset torque limit conditions, if no intervention is taken, it may exceed the range that the differential can withstand, and there is a risk of damaging the differential. If the differential loses its differential function, it will affect the normal driving of the vehicle.

[0033] Especially when the vehicle is off-road or in other harsh road conditions, there may be a large differential between the left and right wheels. If it is not controlled, it is easy to cause burning of the mechanical structure. After burning, the left and right wheels will not be able to differentiate, causing serious driving hazards and affecting the safety of life and property.

[0034] Step 103: When the vehicle meets the preset torque limit condition, send a torque limit request to the vehicle body electronic stability control system.

[0035] Specifically, when the differential lock controller determines that the vehicle meets the preset torque limit condition, it sends a torque limit request to the vehicle electronic stability control system (Electronic Stability Program, ESP).

[0036] It should be noted that the torque limit request is a high priority instruction for the entire vehicle. When the vehicle body electronic stability function is in the off state, if a torque limit request is received, the torque limit request will still be responded to.

[0037] The electronic stability system activates the brake control unit (BrakeControl, BTC), or activates the engine torque control unit (Engine Torque Control, PTC), or activates both BTC and PTC based on the torque limit request. BTC can reduce the wheel speed difference between the left and right wheels by braking, and PTC can reduce the wheel speed difference between the left and right wheels by reducing the engine output torque.

[0038] In the embodiment of the present application, by acquiring driving parameter information when the vehicle is in a driving state and the differential is in an unlocked state, and sending a torque limit request to the body electronic stability control system when it is determined that the vehicle meets the preset torque limit condition based on the driving parameter information, the working condition of the vehicle's differential can be monitored in real time. When the preset torque limit condition is met, that is, the wheel speed difference between the left and right wheels is too large, a torque limit request is sent to reduce the wheel speed difference between the left and right wheels, avoid the situation where the differential is damaged due to exceeding the range that the differential can withstand, and improve driving safety.

[0039] The following describes how to determine whether the vehicle meets the preset torque limit condition based on the driving parameter information. In an optional embodiment of the present application, judging whether the vehicle meets the preset torque limit condition based on the driving parameter information includes the following steps:

[0040] Step 21: Determine whether to record the torque limit mark according to the vehicle driving parameters;

[0041] Step 22: When the duration corresponding to the torque limit sign is greater than the first duration, or the total number of times corresponding to the torque limit sign within the second duration is greater than the preset number, or the total duration corresponding to the torque limit sign within the second duration is greater than the preset duration, determine that the vehicle meets the preset torque limit condition.

[0042] In the embodiment of the present application, a limited torque flag is set, and the differential lock controller can determine whether to record the limited torque flag according to the vehicle driving parameters.

[0043] Specifically, the torque limit flag corresponds to the torque limit flag bit, and recording the torque limit flag here may be switching the torque limit flag bit from a first value to a second value. That is, the default value of the torque limit flag bit is the first value, and when determining to record the torque limit flag, the torque limit flag bit is the second value, and when not recording the torque limit flag, the torque limit flag bit is the first value, for example, the first value may be 0, and the second value may be 1, so that whether the torque limit flag is recorded can be determined based on whether the torque limit flag bit is the second value.

[0044] After determining whether to record the torque limit flag, the torque limit flag position corresponding to each moment can be obtained, so as to determine whether the vehicle meets the preset torque limit condition based on the recorded torque limit flag.

[0045] Specifically, the embodiment of the present application sets three sub-conditions. When any of the following three sub-conditions is met, it is determined that the vehicle meets the preset torque limit condition. The three sub-conditions are: 1. The duration corresponding to the torque limit sign is greater than the first duration; 2. The total number of times corresponding to the torque limit sign in the second duration is greater than the preset number; 3. The total duration corresponding to the torque limit sign in the second duration is greater than the preset duration. Among them, the second duration is greater than the first duration, and the preset duration is less than the first duration. Exemplarily, the first duration can be set to 3 seconds, the second duration can be set to 10 seconds, the preset duration can be set to 5 seconds, and the preset number can be set to 3 times. The above is only an example, and the present application does not make specific restrictions on this. In this example, when the torque limit flag is 1 for 3 consecutive seconds, it is determined that the vehicle meets the preset torque limit condition; within 10 seconds, when the number of times the torque limit flag is 1 is greater than 3 times, it is determined that the vehicle meets the preset torque limit condition; within 10 seconds, when the total duration of the torque limit flag being 1 is greater than 5 seconds, it is determined that the vehicle meets the preset torque limit condition.

[0046] The above implementation scheme of the present application determines whether to record the torque limit flag based on the vehicle driving parameters, and further determines whether the vehicle meets the preset torque limit conditions based on the change of the torque limit flag. That is, whether the vehicle meets the preset torque limit conditions is judged by the change of the dynamically changing torque limit flag determined by the dynamically changing vehicle driving parameters. Compared with directly judging whether the vehicle meets the preset torque limit conditions through the torque limit flag corresponding to a certain moment, the accuracy of the judgment result can be improved.

[0047] The following describes how to determine whether to record the torque limit flag. In an optional embodiment of the present application, determining whether to record the torque limit flag based on the vehicle driving parameters includes:

[0048] Step 31: Determine the vehicle speed, steering wheel angle, and wheel speed difference between the left and right wheels on each axle according to the vehicle driving parameters;

[0049] Step 32: Determine whether to record a torque limit flag according to the vehicle speed, the steering wheel angle, and the wheel speed difference corresponding to the left and right wheels on each axle.

[0050] Specifically, the differential lock controller can obtain the vehicle speed, steering wheel angle and the wheel speed corresponding to each wheel based on the vehicle driving parameters, and then determine the wheel speed difference corresponding to the left and right wheels on each axle of the vehicle according to the wheel speed corresponding to each wheel, where the number of wheel speed differences is determined by the number of axles included in the vehicle, and this application does not make any specific limitations.

[0051] Further, it is determined whether to record the torque limit flag according to the vehicle, the steering wheel angle and the wheel speed difference.

[0052] The above implementation scheme of the present application determines whether to record the torque mark through multiple parameters such as vehicle speed, steering wheel angle and wheel speed difference between the left and right wheels, which covers various working conditions corresponding to the vehicle and can ensure that the recorded torque mark is more accurate and avoid the situation where the torque mark is missed.

[0053] The following describes whether to record the torque flag. In an optional embodiment of the present application, step 32 in the previous embodiment includes the following steps:

[0054] Step 41, when the vehicle speed is greater than a preset vehicle speed and the steering wheel angle is greater than a preset angle, recording the torque limit flag;

[0055] Step 42: When the wheel speed difference between the left and right wheels on any axle is greater than a preset threshold, the torque limit flag is recorded.

[0056] In a specific implementation process, the differential lock controller monitors the vehicle, steering wheel angle, and wheel speed difference acquired in real time, and records the torque limit flag when the vehicle speed is greater than the preset speed and the steering wheel angle is greater than the preset angle. When any wheel speed difference (the wheel speed difference corresponding to the front wheel or the wheel speed difference corresponding to the rear wheel) is greater than the preset threshold, the torque limit flag is also recorded. For example, the preset vehicle speed can be set to 80km / h, the preset angle can be set to 360°, and the preset threshold can be set to 160km / h. The above is only an example, and this application does not make specific limitations on this. Then, in this example, when any of the two conditions of the vehicle speed being greater than 80km / h and the steering wheel angle being greater than 360°, and any wheel speed difference being greater than 160km / h is met, the torque limit flag is recorded, that is, the torque limit flag is set to the second value.

[0057] The above implementation scheme of the present application can perform detection from the vehicle speed and steering wheel dimensions as well as from the wheel speed difference dimension to determine whether to record the torque limit mark, which can ensure that various working conditions of the vehicle are covered, and then determine whether the vehicle meets the preset torque limit conditions based on the changes in the torque limit mark.

[0058] In an optional embodiment of the present application, when the vehicle meets the preset torque limit condition, a prompt message is output, wherein the prompt message is used to prompt the driver that there is a risk of damage to the differential.

[0059] During the specific implementation process, the differential lock controller can output a prompt message through the terminal on the vehicle when the vehicle meets the preset torque limit conditions. The prompt message is used to remind the driver that the speed difference between the left and right wheels of the current vehicle exceeds the tolerance range of the differential and there is a risk of damage.

[0060] The above implementation scheme of the present application can timely remind the driver of the risk of damage to the differential by outputting prompt information, so that the driver can adjust the driving strategy based on the prompt information to improve driving safety.

[0061] In an optional embodiment of the present application, after sending the torque limit request to the vehicle body electronic stability control system, the method further includes:

[0062] When the vehicle does not meet the preset torque limit condition, a stop torque limit request is sent to the vehicle body electronic stability control system.

[0063] Specifically, after sending the torque limit request, the differential lock controller will continue to detect whether the vehicle meets the preset torque limit conditions. When the vehicle does not meet the preset torque limit conditions, that is, the vehicle does not meet the following three sub-conditions: 1. The duration corresponding to the torque limit sign is greater than the first duration; 2. The total number of times the torque limit sign corresponds to the second duration is greater than the preset number; 3. The total duration corresponding to the torque limit sign within the second duration is greater than the preset duration. At this time, a stop torque limit request is sent to the vehicle electronic stability control system to enable the vehicle electronic stability control system to stop braking through BTC and stop reducing the engine output torque through PTC.

[0064] In the specific implementation process, a torque limit signal can be set. When the vehicle meets the preset torque limit condition, the signal value of the torque limit signal is set to 0x1. When the vehicle does not meet the preset torque limit condition, the signal value of the torque limit signal is set to 0x0. When the parameter used to determine whether the vehicle meets the preset torque limit condition is invalid, the signal value of the torque limit signal is set to 0x2, indicating that it is currently impossible to determine whether the vehicle meets the preset torque limit condition. The differential lock controller can determine the request signal sent by the vehicle body electronic stability control system based on the signal value of the torque limit signal. When the signal value is 0x1, the request signal is a torque limit request. When the signal value is 0x0, the request signal is a stop torque limit request. In addition, when the signal value is 0x2, no operation is performed.

[0065] The above-mentioned implementation scheme of the present application sends a stop torque limit request to the vehicle body electronic stability control system when the vehicle does not meet the preset torque limit conditions, so that the electronic stability control system stops braking through BTC and stops reducing the engine output torque through PTC, thereby restoring the vehicle's power performance.

[0066] In an optional embodiment of the present application, sending a torque limit request to a vehicle body electronic stability control system includes at least one of the following solutions:

[0067] sending a first request to a brake control unit in the vehicle body electronic stability control system, so that the brake control unit outputs a brake torque based on the first request;

[0068] A second request is sent to an engine torque control unit in the vehicle body electronic stability control system, so that the engine torque control unit limits torque output based on the second request.

[0069] In the specific implementation process, when it is determined that the vehicle meets the preset torque limit conditions, that is, the wheel speed difference of the vehicle exceeds the range that the differential can withstand, the torque needs to be limited at this time to avoid excessive wheel speed difference damaging the parts in the differential, causing the differential to lose its differential function, and thus affecting the normal driving of the vehicle.

[0070] At this time, the differential lock controller sends a torque limit request to the vehicle body electronic temperature control system. Specifically, the differential controller can send a first request to the brake control unit in the vehicle body electronic stability control system, and can also send a second request to the engine torque control unit in the vehicle body electronic stability control system, and can also send the first request to the brake control unit in the vehicle body electronic stability control system and send the second request to the engine torque control unit at the same time.

[0071] Specifically, when the braking control unit receives the first request, it outputs braking torque, which can reduce the wheel speed difference between the left and right wheels through braking. When the engine torque control unit receives the second request, it limits the torque output, which can reduce the wheel speed difference between the left and right wheels by reducing the engine output torque.

[0072] The above implementation scheme of the present application limits the wheel speed difference of the vehicle by sending a first request to the brake control unit in the vehicle body electronic stability control system and sending a second request to the engine torque control unit, thereby avoiding damage to the differential due to exceeding the tolerance range of the differential and improving driving safety.

[0073] The above describes the differential lock protection control method provided in the embodiment of the present application. The following will describe the differential lock protection control device provided in the embodiment of the present application in conjunction with the accompanying drawings.

[0074] like Figure 2 As shown, an embodiment of the present invention further provides a differential lock protection control device, the device comprising:

[0075] An acquisition module 201 is used to acquire driving parameter information of the vehicle when the vehicle is in a driving state and the differential is in an unlocked state;

[0076] A judgment module 202, configured to judge whether the vehicle satisfies a preset torque limit condition according to the driving parameter information;

[0077] The first sending module 203 is used to send a torque limit request to a vehicle body electronic stability control system when the vehicle meets the preset torque limit condition.

[0078] Optionally, the judging module includes:

[0079] A first determination submodule, used to determine whether to record a torque limit flag according to vehicle driving parameters;

[0080] The second determination submodule is used to determine that the vehicle satisfies the preset torque limit condition when the duration corresponding to the torque limit sign is greater than the first duration, or the total number of times corresponding to the torque limit sign within the second duration is greater than a preset number, or the total duration corresponding to the torque limit sign within the second duration is greater than the preset duration.

[0081] Optionally, the first determining submodule includes:

[0082] A first determining unit, configured to determine the vehicle speed, the steering wheel angle, and the wheel speed difference between the left and right wheels on each axle according to the vehicle driving parameters;

[0083] The second determination unit is used to determine whether to record the torque limit flag according to the vehicle speed, the steering wheel angle, and the wheel speed difference corresponding to the left and right wheels on each axle.

[0084] Optionally, the second determining unit includes:

[0085] A first recording subunit, configured to record the torque limit flag when the vehicle speed is greater than a preset vehicle speed and the steering wheel angle is greater than a preset angle;

[0086] The second recording subunit is used to record the torque limit mark when the wheel speed difference corresponding to the left and right wheels on any axle is greater than a preset threshold.

[0087] Optionally, the first recording subunit or the second recording subunit is further used for:

[0088] The torque limit flag bit corresponding to the torque limit flag is switched from a first value to a second value.

[0089] Optionally, the device further comprises:

[0090] The output module is used to output a prompt message when the vehicle meets the preset torque limit condition, wherein the prompt message is used to prompt the driver that there is a risk of damage to the differential.

[0091] Optionally, after sending the torque limit request to the vehicle body electronic stability control system, the device further includes:

[0092] The second sending module is used to send a stop torque limit request to the vehicle electronic stability control system when the vehicle does not meet the preset torque limit condition.

[0093] Optionally, the first sending module includes at least one of the following sending submodules:

[0094] a first sending submodule, configured to send a first request to a brake control unit in the vehicle body electronic stability control system, so that the brake control unit outputs a brake torque based on the first request;

[0095] The second sending submodule is used to send a second request to the engine torque control unit in the vehicle body electronic stability control system, so that the engine torque control unit limits the torque output based on the second request.

[0096] The differential lock protection control device provided in the present application can monitor the working condition of the vehicle's differential in real time by acquiring driving parameter information when the vehicle is in a driving state and the differential is in an unlocked state, and sending a torque limit request to the vehicle body electronic stability control system when it is determined that the vehicle meets the preset torque limit condition based on the driving parameter information. When the preset torque limit condition is met, that is, the wheel speed difference between the left and right wheels is too large, a torque limit request is sent to reduce the wheel speed difference between the left and right wheels, thereby avoiding the situation where the differential is damaged due to exceeding the range that the differential can withstand, thereby improving driving safety.

[0097] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0098] An embodiment of the present application also provides an electronic device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the various processes of the above-mentioned differential lock protection control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0099] For example, Figure 3 FIG. 1 shows a schematic diagram of the physical structure of an electronic device. Figure 3 As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330, and the processor 310 is used to perform the following steps: when the vehicle is in a driving state and the differential is in an unlocked state, obtain the driving parameter information of the vehicle; according to the driving parameter information, determine whether the vehicle meets the preset torque limit condition; when the vehicle meets the preset torque limit condition, send a torque limit request to the vehicle body electronic stability control system. The processor 310 may also execute other schemes in the embodiments of the present application, which will not be further elaborated here.

[0100] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.

[0101] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, each process of the above-mentioned differential lock protection control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0102] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0103] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0104] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0105] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0106] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0107] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0108] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0109] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0110] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0111] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A differential lock protection control method, characterized in that: The method comprises: When the vehicle is in a driving state and the differential is in an unlocked state, obtaining driving parameter information of the vehicle; determining, based on the driving parameter information, whether the vehicle satisfies a preset torque limit condition; When the vehicle meets the preset torque limit condition, a torque limit request is sent to a vehicle body electronic stability control system.

2. The differential lock protection control method according to claim 1, characterized in that: Judging whether the vehicle meets a preset torque limit condition according to the driving parameter information includes: Determine whether to record the torque limit mark according to the vehicle driving parameters; When the duration corresponding to the torque limit sign is greater than the first duration, or the total number of times the torque limit sign corresponds to the second duration is greater than the preset number, or the total duration corresponding to the torque limit sign in the second duration is greater than the preset duration, it is determined that the vehicle meets the preset torque limit condition.

3. The differential lock protection control method according to claim 2, characterized in that: Determine whether to record the torque limit mark based on the vehicle driving parameters, including: Determine the vehicle speed, steering wheel angle, and wheel speed difference of the left and right wheels on each axle according to the vehicle driving parameters; Whether to record the torque limit flag is determined according to the vehicle speed, the steering wheel angle, and the wheel speed difference corresponding to the left and right wheels on each axle.

4. The differential lock protection control method according to claim 3, characterized in that: Determining whether to record a torque limit flag according to the vehicle speed, the steering wheel angle, and the wheel speed difference corresponding to the left and right wheels on each axle includes: When the vehicle speed is greater than a preset vehicle speed and the steering wheel angle is greater than a preset angle, recording the torque limit flag; When the wheel speed difference corresponding to the left and right wheels on any axle is greater than a preset threshold, the torque limit flag is recorded.

5. The differential lock protection control method according to claim 4, characterized in that: Record the torque limit mark, including: The torque limit flag bit corresponding to the torque limit flag is switched from a first value to a second value.

6. The differential lock protection control method according to claim 1, characterized in that: The method further comprises: When the vehicle meets the preset torque limit condition, a prompt message is output, wherein the prompt message is used to prompt the driver that there is a risk of damage to the differential.

7. The differential lock protection control method according to claim 1, characterized in that: After sending the torque limit request to the vehicle body electronic stability control system, the method further includes: When the vehicle does not meet the preset torque limit condition, a stop torque limit request is sent to the vehicle body electronic stability control system.

8. The differential lock protection control method according to claim 1, characterized in that: Sending a torque limit request to a vehicle electronic stability control system includes at least one of the following schemes: sending a first request to a brake control unit in the vehicle body electronic stability control system, so that the brake control unit outputs a brake torque based on the first request; A second request is sent to an engine torque control unit in the vehicle body electronic stability control system, so that the engine torque control unit limits torque output based on the second request.

9. A differential lock protection control device, characterized in that: include: An acquisition module, used for acquiring driving parameter information of the vehicle when the vehicle is in a driving state and the differential is in an unlocked state; A judgment module, used for judging whether the vehicle meets a preset torque limit condition according to the driving parameter information; The first sending module is used to send a torque limit request to a vehicle body electronic stability control system when the vehicle meets the preset torque limit condition.

10. An electronic device, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the differential lock protection control method according to any one of claims 1 to 8 is implemented.

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