A vehicle differential lock control method, device, equipment and vehicle

Abstract

The embodiment of the application discloses a vehicle differential lock control method, device, equipment and vehicle. The state of an all-terrain control switch is acquired, and a first state message corresponding to the state of the all-terrain control switch is acquired. According to a preset corresponding relationship between the state message and a terrain mode, the terrain mode corresponding to the first state message is acquired, and each differential lock state corresponding to the terrain mode is acquired. Each differential lock is controlled to be locked or unlocked according to the differential lock states, so that the difficulty of driving a 6x6 off-road vehicle model by a general driver is reduced, the hard off-road SUV differential lock autonomous selection ability is given, the driving pleasure of autonomous selection is improved, and the subsequent modification restriction is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a vehicle differential lock control method, device, equipment, and vehicle. Background Technology

[0002] Typically, automakers produce 4x4 off-road vehicles (4 wheels, 2 axles). To better meet diverse off-road needs, manufacturers have introduced 6x6 off-road vehicles (6 wheels, 3 axles). Compared to 4x4 off-road vehicles, 6x6 vehicles have one more axle and two more wheels at the rear; reduced single-wheel load; increased overall vehicle load-bearing capacity; increased number of drive wheels and tires; larger tire contact patch and more points of contact; more flexible power distribution; and superior off-road capability in harsh conditions. Based on two-wheel drive, four-wheel drive, and six-wheel drive systems, there are a total of five differentials: a central differential, an inter-axle differential, a rear axle differential, a middle axle differential, and a front axle differential. Differential locks are essential off-road tools. However, the lack of five differential locks linked to various terrain modes increases the off-road difficulty for general drivers in 6x6 vehicles. Furthermore, the special off-road positioning of 6x6 vehicles, especially for hardcore off-road SUVs, significantly limits the use and selection of differential locks, resulting in a lack of driving pleasure and restricting subsequent modifications.

[0003] Therefore, how to provide a method for controlling all-terrain and differential locks in a six-wheel drive vehicle, and a control strategy that links various terrain modes with five differential locks to reduce the off-road difficulty for ordinary drivers of 6×6 vehicles, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, embodiments of this application provide a vehicle differential lock control method, device, equipment, and vehicle, to provide a control strategy that links various terrain modes with five differential locks for all-terrain and differential lock control of a six-wheel drive vehicle, thereby reducing the off-road difficulty for general drivers of 6×6 vehicles.

[0005] To address the above problems, the technical solutions provided in this application are as follows:

[0006] A vehicle differential lock control method, the method comprising:

[0007] Get the status of the all-terrain control switch;

[0008] Obtain the first status message corresponding to the all-terrain control switch status;

[0009] Based on the preset correspondence between status messages and terrain patterns, obtain the terrain pattern corresponding to the first status message.

[0010] Based on the preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock, and the front axle differential lock, the state of each differential lock corresponding to the terrain mode is obtained.

[0011] Control each differential lock to lock or unlock according to its state.

[0012] In one possible implementation, after controlling the locking or unlocking of each differential lock according to its state, the method further includes:

[0013] Get the status of the differential lock switch;

[0014] Obtain the second status message corresponding to the differential lock switch status;

[0015] The status of each differential lock is changed according to the second status message.

[0016] In one possible implementation, the method further includes:

[0017] Get the status of the expert mode switch;

[0018] In response to the expert mode switch being in a preset state, the process of controlling the locking or unlocking of each differential lock based on the state of each differential lock is terminated, and a third state message corresponding to the differential lock switch state is obtained.

[0019] Based on the preset correspondence between status messages and differential lock states, the differential lock state corresponding to the third status message is obtained;

[0020] Control each differential lock to lock or unlock according to the differential lock status.

[0021] In one possible implementation, the terrain modes include: standard mode, snow mode, sand mode, mud mode, rock mode, 6L mode, and expert mode;

[0022] The differential lock states corresponding to the terrain modes include:

[0023] The standard mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock of the middle axle, unlocking of the rear axle differential lock, unlocking of the middle axle differential lock, and unlocking of the front axle differential lock.

[0024] Snow mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock, unlocking of the rear differential lock, unlocking of the inter-axle differential lock, and unlocking of the front differential lock.

[0025] Sand mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock;

[0026] The Mud Mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock.

[0027] Rock mode corresponds to locking the center differential, locking the middle axle differential, locking the rear axle differential, locking the middle axle differential, and unlocking the front axle differential.

[0028] The 6L mode corresponds to locking the central differential lock, locking the inter-axle differential lock, unlocking the rear differential lock, unlocking the inter-axle differential lock, and unlocking the front differential lock.

[0029] The central differential lock status, the inter-axle differential lock status, the rear differential lock status, the inter-axle differential lock status, and the front differential lock status in expert mode follow the requirements of expert mode.

[0030] In one possible implementation, after controlling the locking or unlocking of each differential lock according to its state, the method further includes:

[0031] Based on the status of each differential lock, an acknowledgment signal is sent to the differential lock indicator light and the display device, thereby illuminating the corresponding differential lock indicator light and causing the display device to display the corresponding signal.

[0032] In one possible implementation, the method further includes:

[0033] Get vehicle speed;

[0034] In response to the vehicle speed exceeding the preset speed, the acquisition of the first status message is stopped, and the corresponding differential lock indicator light is illuminated, causing the display device to display the corresponding prompt signal.

[0035] In one possible implementation, the method further includes:

[0036] In response to the terrain mode being the first preset mode, the overspeed alarm is canceled and the first overspeed unlock is performed.

[0037] In one possible implementation, the method further includes:

[0038] In response to the terrain mode being the second preset mode, the overspeed alarm is canceled and the second overspeed unlock is executed.

[0039] A vehicle differential lock control device, the device comprising:

[0040] The first acquisition unit is used to acquire the status of the all-terrain control switch;

[0041] The second acquisition unit is used to acquire the first status message corresponding to the all-terrain control switch status;

[0042] The third acquisition unit is used to acquire the terrain mode corresponding to the first status message according to the preset correspondence between status messages and terrain modes, and to acquire the status of each differential lock corresponding to the terrain mode.

[0043] The fourth acquisition unit is used to acquire the state of each differential lock corresponding to the terrain mode according to the preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock and the front axle differential lock.

[0044] The first control unit is used to control the locking or unlocking of each differential lock according to the state of each differential lock.

[0045] An electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the memory, wherein when the processor executes the computer program, it implements the vehicle differential lock control method as described above.

[0046] A vehicle includes a control module for executing the vehicle differential lock control method described above.

[0047] Compared with the prior art, this application has the following advantages:

[0048] This application provides a vehicle differential lock control method, device, equipment, and vehicle. Specifically, when executing the vehicle differential lock control method provided in this application embodiment, the state of the all-terrain control switch is first obtained, and a first state message corresponding to the state of the all-terrain control switch is obtained. Next, according to a preset correspondence between state messages and terrain modes, the terrain mode corresponding to the first state message is obtained, and the state of each differential lock corresponding to the terrain mode is obtained. Finally, each differential lock is controlled according to its state. The method provided in this application reduces the difficulty for general drivers to drive 6×6 off-road vehicles, while also providing hardcore off-road SUVs with the ability to autonomously select differential locks, enhancing the driving pleasure of autonomous selection and reducing subsequent modification restrictions. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1A A 4×4 off-road vehicle model is provided as an embodiment of this application;

[0051] Figure 1B A 6×6 off-road vehicle model is provided as an embodiment of this application;

[0052] Figure 2 A schematic diagram of a 6×6 off-road (6 wheels, 3 axles) vehicle provided in this application embodiment;

[0053] Figure 3 A schematic diagram illustrating an exemplary application scenario provided in this application embodiment;

[0054] Figure 4 A rotary all-terrain control switch provided in this application embodiment;

[0055] Figure 5 A push-button all-terrain control switch is provided in the embodiments of this application;

[0056] Figure 6 This application provides a flowchart of a vehicle differential lock control method according to an embodiment of the present application.

[0057] Figure 7 An expert mode switch provided in an embodiment of this application;

[0058] Figure 8 This is a schematic diagram of a vehicle differential lock control device provided in an embodiment of this application. Detailed Implementation

[0059] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0060] To facilitate understanding of the technical solutions provided in the embodiments of this application, the background technology involved in the embodiments of this application will be described below.

[0061] The differential lock system is part of a vehicle's transmission system, and its main function is to ensure that the transmission system can provide sufficient traction under different road conditions. The drive axle differential lock is an essential component of off-road vehicles; when one wheel slips, it can transfer power to the other wheel, helping the vehicle get out of trouble.

[0062] Car manufacturers typically produce 4x4 off-road vehicles (4 wheels, 2 axles), such as Figure 1A As shown, to better meet different off-road needs, manufacturers have launched 6x6 off-road (6 wheels, 3 axles) vehicles, such as... Figure 1BAs shown, the 6x6 off-road vehicle has one more axle and two more wheels at the rear than the 4x4; the load on a single wheel is reduced; the overall vehicle load-bearing capacity is improved; the number of drive wheels and tires increases; the tire contact area is larger and there are more points of contact; power distribution is more flexible; and it has outstanding off-road capability in harsh road conditions. Based on the two-wheel drive, four-wheel drive, and six-wheel drive systems, there are a total of five differentials: a central differential, an inter-axle differential, a rear axle differential, a middle axle differential, and a front axle differential. Differential locks are an indispensable off-road tool. However, the lack of five differential locks linked to various terrain modes increases the off-road difficulty for general drivers of 6x6 vehicles. Due to the special off-road positioning of 6x6 vehicles, the ability to independently select differential locks is greatly limited for hardcore off-road SUVs, resulting in a lack of driving pleasure and restricting subsequent modifications.

[0063] See Figure 2 This figure is a schematic diagram of a 6×6 off-road (6 wheels, 3 axles) vehicle provided in an embodiment of this application. Figure 2 As shown in the diagram, component ① is the transfer case center differential lock, primarily used to lock the differential when converting from two-wheel drive to four-wheel drive; component ② is the center axle inter-axle differential lock, primarily used to lock the differential when converting from four-wheel drive to six-wheel drive; component ③ is the center axle wheel inter-wheel differential lock, primarily used to lock the differentials of the left and right drive wheels; component ④ is the rear axle wheel inter-wheel differential lock, primarily used to lock the differentials of the left and right drive wheels of the rear axle; component ⑤ is the front axle wheel inter-wheel differential lock, primarily used to lock the differentials of the left and right drive wheels of the front axle; and component ⑥ is the through axle.

[0064] When a differential lock is engaged, the front / rear wheels will feel a dragging sensation when turning on paved roads. This will shorten the lifespan of the differential lock and, in severe cases, damage transmission system components. Therefore, its use on paved roads is prohibited. When the transfer case center differential lock, the middle axle inter-axle differential lock, the middle axle wheel differential lock, the rear axle wheel differential lock, and the front axle wheel differential lock are engaged simultaneously, the entire vehicle is in a rigidly connected state. Since the front axle is a steering drive axle, locking it will result in steering braking, understeering, and a large steering torque. This affects the safety of the entire vehicle, so it is necessary to drive at low speeds within a safe range.

[0065] To address this issue, this application provides a vehicle differential lock control method, device, equipment, and vehicle. First, the state of the all-terrain control switch is acquired, and a first state message corresponding to the all-terrain control switch state is obtained. Based on a preset correspondence between state messages and terrain modes, the terrain mode corresponding to the first state message is acquired, and the state of each differential lock corresponding to the terrain mode is obtained. Then, each differential lock is controlled according to its state. The method provided in this application reduces the difficulty for general drivers of 6x6 off-road vehicles, while also providing hardcore off-road SUVs with the ability to autonomously select differential locks, enhancing the driving pleasure of autonomous selection and reducing subsequent modification limitations.

[0066] To facilitate understanding of the vehicle differential lock control method provided in the embodiments of this application, the following is combined with... Figure 3 The example scenario is shown below. See also... Figure 3 This figure is a schematic diagram of an exemplary application scenario provided in the embodiments of this application.

[0067] First, obtain the status of the all-terrain control switch. The all-terrain control switch can be understood as a multi-position knob. (See below) Figure 4 The figure shows a rotary all-terrain control switch provided in an embodiment of this application. Figure 4 As shown, 401 is the knob of a rotary all-terrain control switch. An all-terrain control switch can also be a collection of multiple switches; see [link to documentation]. Figure 5 The figure shows a push-button all-terrain control switch provided in an embodiment of this application. Figure 5 As shown, 501 is a push-button all-terrain control switch. The state of the all-terrain control switch can be understood as the position of the all-terrain control switch knob or the pressing of a sub-switch within the all-terrain control switch. Next, the first state message corresponding to the all-terrain control switch state is obtained. This first state message can be understood as the message for the terrain mode corresponding to each position or sub-switch of the all-terrain control switch. Then, based on the preset correspondence between state messages and terrain modes, the terrain mode corresponding to the first state message is obtained, along with the state of each differential lock corresponding to that terrain mode. The preset correspondence between state messages and terrain modes can be understood as a pre-set correspondence between a specific state message and a specific terrain mode. The state of each differential lock can be understood as the locking or unlocking state of each differential lock. Finally, each differential lock is controlled according to its state. This reduces the difficulty for general drivers of 6x6 off-road vehicles while providing hardcore off-road SUVs with the ability to autonomously select differential locks, enhancing the driving pleasure of autonomous selection and reducing subsequent modification limitations.

[0068] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0069] See Figure 6 The figure is a flowchart of the vehicle differential lock control method provided in an embodiment of this application. Figure 6 As shown, the vehicle differential lock control method may include steps S601-S604:

[0070] S601: Get the status of the all-terrain control switch.

[0071] To achieve the vehicle differential lock control of this application, the vehicle differential lock control system must first obtain the terrain mode selected by the user, that is, obtain the state of the all-terrain control switch.

[0072] In one possible implementation, the terrain modes include: standard mode, snow mode, sand mode, mud mode, rock mode, 6L mode, and expert mode;

[0073] The differential lock states corresponding to the terrain modes include:

[0074] The standard mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock of the middle axle, unlocking of the rear axle differential lock, unlocking of the middle axle differential lock, and unlocking of the front axle differential lock.

[0075] Snow mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock, unlocking of the rear differential lock, unlocking of the inter-axle differential lock, and unlocking of the front differential lock.

[0076] Sand mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock;

[0077] The Mud Mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock.

[0078] Rock mode corresponds to locking the center differential, locking the middle axle differential, locking the rear axle differential, locking the middle axle differential, and unlocking the front axle differential.

[0079] The 6L mode (i.e., the low-speed mode with 6 wheels driven) corresponds to locking the center differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock.

[0080] The central differential lock status, the inter-axle differential lock status, the rear differential lock status, the inter-axle differential lock status, and the front differential lock status in expert mode follow the requirements of expert mode.

[0081] In one possible implementation, the all-terrain control switch can be, but is not limited to, a multi-position knob or a set of multiple switches. When the all-terrain control switch is a multi-position knob, each position corresponds to a terrain mode; when the all-terrain control switch is a set of multiple switches, each sub-switch corresponds to a terrain mode. This application does not impose specific limitations on the form of the all-terrain control switch, as long as the terrain mode can be switched through the all-terrain control switch.

[0082] In one possible implementation, the state of the all-terrain control switch can be, but is not limited to, the switch knob of the all-terrain control switch being turned to that position or which sub-switch of the all-terrain control switch being pressed.

[0083] S602: Obtain the first status message corresponding to the all-terrain control switch status.

[0084] Since each terrain mode corresponds to a message, in order to control each differential lock according to the terrain mode, it is also necessary to obtain the first state message corresponding to the state of the all-terrain control switch after obtaining which state of the all-terrain control switch corresponds to which terrain mode.

[0085] In one possible implementation, the first status message may be, but is not limited to, a message for the terrain mode corresponding to each position or sub-switch of the all-terrain control switch.

[0086] S603: Obtain the terrain mode corresponding to the first status message according to the preset correspondence between status messages and terrain modes.

[0087] In order to control each differential lock according to the terrain pattern, it is also necessary to obtain the terrain pattern corresponding to the first status message based on the preset correspondence between status messages and terrain patterns.

[0088] In one possible implementation, the pre-defined correspondence between status messages and terrain patterns can be, but is not limited to, a pre-set correspondence between a certain status message and a certain terrain pattern.

[0089] For example, Table 1 is a comparison table of electronically controlled differential locks and all-terrain modes:

[0090] Table 1 Comparison of Electronically Controlled Differential Locks and All-Terrain Modes

[0091]

[0092] In one possible implementation, the state of each differential lock can be, but is not limited to, the locked or unlocked state of each differential lock.

[0093] S604: Based on the preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock, and the front axle differential lock, obtain the state of each differential lock corresponding to the terrain mode.

[0094] To control each differential lock according to the terrain mode, it is also necessary to obtain the status of each differential lock corresponding to the terrain mode based on the preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock, and the front axle differential lock.

[0095] S605: Control each differential lock to lock or unlock according to the state of each differential lock.

[0096] After obtaining the status of each differential lock corresponding to the terrain mode, the locking or unlocking of each differential lock can be controlled according to the obtained status of each differential lock.

[0097] In one possible implementation, after controlling the locking or unlocking of each differential lock according to its state, the method further includes A1-A3:

[0098] A1: Get the status of the differential lock switch.

[0099] When the all-terrain control is active, to change the differential lock status in the corresponding mode without altering the mode itself, the status of the differential lock switches must first be obtained. For example, a user might want to "unlock all differential locks in the most powerful off-road mode." The most powerful off-road mode corresponds to the Rock mode. However, in Rock mode, the five differential locks are in the following states: center differential lock locked, middle axle differential lock locked, rear axle differential lock locked, middle axle differential lock locked, and front axle differential lock locked. To meet the user's needs, all locks can be unlocked via the differential lock switches. Therefore, it's necessary to obtain the status of each differential lock switch and then change its state to unlock all five differential locks. However, the terrain mode will not change, nor will the corresponding engine, transmission, and electronic stability control system states.

[0100] In one possible implementation, the state of the differential lock switch can be, but is not limited to, the state of the switch corresponding to each differential lock in the differential lock switch.

[0101] A2: Obtain the second status message corresponding to the differential lock switch status.

[0102] To change the state of each differential lock, it is also necessary to obtain the status message corresponding to the state of the differential lock switch. Therefore, after obtaining the state of the differential lock switch, it is necessary to obtain the second status message corresponding to the state of the differential lock switch.

[0103] In one possible implementation, the second state message is, but is not limited to, the message corresponding to each state of each differential lock switch.

[0104] A3: Change the status of each differential lock according to the second status message.

[0105] By obtaining the second status message corresponding to the differential lock switch status, the original status of each differential lock can be changed according to the second status message.

[0106] When the all-terrain control switch is in the state, in order to meet the user's requirement of "changing the differential lock state in the corresponding mode without changing the mode", the state of the differential lock switch can be obtained, then the second state message corresponding to the differential lock switch state can be obtained, and finally the state of each differential lock can be changed according to the second state message.

[0107] In one possible implementation, the method further includes B1-B4:

[0108] B1: Get the status of the expert mode switch.

[0109] When the user has pressed the all-terrain control switch, thus enabling the system to obtain the status of the all-terrain control switch; or when the user has not pressed the all-terrain control switch, and the system cannot obtain the status of the all-terrain control switch, if the user presses the expert mode switch, the message sent by the expert mode switch should be executed first, so it is necessary to obtain the status of each switch in the expert mode switch.

[0110] See Figure 7 The figure shows an expert mode switch provided in an embodiment of this application. Figure 7 As shown, 701 is the expert mode switch.

[0111] B2: In response to the expert mode switch being in a preset state, terminate the control of locking or unlocking each differential lock according to the state of each differential lock, and obtain the third state message corresponding to the differential lock switch state.

[0112] When a sub-switch of the expert mode switch is pressed, the message sent by the expert mode switch will be processed first. Therefore, after obtaining the status of the expert mode switch, if the status of the expert mode switch is a preset state, and if the system obtains the first status message and controls the action of each differential lock according to the status of each differential lock, the control of locking or unlocking of each differential lock according to the status of each differential lock will be terminated, and the third status message corresponding to the status of the differential lock switch will be obtained.

[0113] In one possible implementation, the third-state message can be, but is not limited to, the message corresponding to each sub-switch of the expert mode switch.

[0114] B3: Based on the preset correspondence between status messages and differential lock states, obtain the differential lock state corresponding to the third status message.

[0115] In order to control the state of each differential lock through the expert mode switch, after obtaining the third state message corresponding to the state of the differential lock switch, it is also necessary to obtain the differential lock state corresponding to the third state message according to the preset correspondence between the state message and the differential lock state.

[0116] In one possible implementation, the pre-defined correspondence between status messages and differential lock states can be, but is not limited to, a pre-set correspondence between the status messages of sub-switches of the expert mode switch and the differential lock states. For example, Table 2 shows the correspondence between expert mode request signals and differential lock states:

[0117] Table 2. Correspondence between Expert Mode Request Signals and Differential Locks

[0118]

[0119] B4: Control each differential lock to lock or unlock according to the differential lock status.

[0120] After obtaining the differential lock status corresponding to the third status message, each differential lock can be controlled according to the differential lock status.

[0121] To prioritize the execution of messages delivered by the expert mode switch, the status of the expert mode switch must first be obtained. If the expert mode switch is in a preset state, the process of controlling the locking or unlocking of each differential lock based on its state is terminated, and a third state message corresponding to the differential lock switch state is obtained. Next, based on the preset correspondence between state messages and differential lock states, the differential lock state corresponding to the third state message is obtained. Then, each differential lock is controlled according to its state. Executing messages delivered by the expert mode switch can cancel the constraint relationship between the middle axle differential lock, the middle axle inter-axle differential lock, and the rear axle differential lock (e.g., locking the rear axle differential lock alone while simultaneously locking the middle axle inter-axle lock). This allows for free combination of the unlocking / locking states of the differential locks, satisfying the driver's autonomous selection capability for differential locks.

[0122] In one possible implementation, after controlling the locking or unlocking of each differential lock according to its state, the method further includes:

[0123] Based on the status of each differential lock, an acknowledgment signal is sent to the differential lock indicator light and the display device, thereby illuminating the corresponding differential lock indicator light and causing the display device to display the corresponding signal.

[0124] To allow users to understand the real-time status of the differential locks, after controlling each differential lock according to its status, it is also necessary to send an acknowledgment signal to the differential lock indicator light and display device according to the status of each differential lock, so as to illuminate the corresponding differential lock indicator light and display the corresponding signal on the display device.

[0125] In one possible implementation, the display device can be, but is not limited to, an IP (Instrument Panel). Any device capable of displaying the corresponding signals can be used as the display device in this application, and this application does not specifically limit the display device.

[0126] In one possible implementation, the corresponding signal can be, but is not limited to, the terrain pattern in which the vehicle is currently located.

[0127] In one possible implementation, the method further includes C1-C2:

[0128] C1: Get vehicle speed.

[0129] When the user presses the all-terrain control switch, the system can obtain the status message corresponding to the status of the all-terrain control switch, thereby controlling each differential lock. However, if the vehicle speed is too high at this time, it will cause danger, so it is necessary to obtain the vehicle speed in real time.

[0130] C2: In response to the vehicle speed being greater than the preset speed, stop acquiring the first status message, and illuminate the corresponding differential lock indicator light and display the corresponding prompt signal on the display device.

[0131] After obtaining the vehicle speed, if the vehicle speed exceeds the preset speed, the acquisition of the first status message will stop, the corresponding differential lock indicator light will be illuminated, and the display device will display the corresponding prompt signal.

[0132] In one possible implementation, the preset vehicle speed can be, but is not limited to, 4 km / h. This application does not impose specific restrictions on the preset vehicle speed, and the preset vehicle speed can be adjusted according to actual needs.

[0133] In one possible implementation, the display device can be, but is not limited to, an IP (Instrument Panel). Any device capable of displaying the corresponding signals can be used as the display device in this application, and this application does not specifically limit the display device.

[0134] In one possible implementation, the corresponding signal could be, but is not limited to, the current vehicle speeding.

[0135] In one possible implementation, the method further includes:

[0136] In response to the terrain mode being the first preset mode, the overspeed alarm is canceled and the first overspeed unlock is performed.

[0137] In other modes, overspeed alarm and overspeed unlock can prevent rollovers, but in the first preset mode, the differential lock between the axles must be locked. Therefore, when the terrain mode is the first preset mode, the overspeed alarm is canceled and the first overspeed unlock is executed.

[0138] In one possible implementation, the first preset mode refers to the sand mode, mud mode, and 6L mode.

[0139] In one possible implementation, an overspeed alarm refers to the vehicle alarm system being triggered when the vehicle exceeds a certain speed. For example, when the vehicle speed is detected to exceed 30 km / h, the control module will trigger the vehicle alarm system to issue an overspeed alarm.

[0140] In one possible implementation, the first overspeed unlock refers to unlocking the inter-axle differential lock and the center differential lock. For example, when the vehicle speed is detected to exceed 40 km / h, the control module will automatically unlock the inter-axle differential lock and the center differential lock.

[0141] In one possible implementation, the method further includes:

[0142] In response to the terrain mode being the second preset mode, the overspeed alarm is canceled and the second overspeed unlock is executed.

[0143] In the second preset mode, strong off-road performance is required, and overspeed warning and overspeed unlock are not needed. Therefore, when the terrain mode is the second preset mode, the overspeed warning is canceled and the second overspeed unlock is executed.

[0144] In one possible implementation, the second preset mode refers to the rock mode.

[0145] In one possible implementation, the second overspeed unlock refers to unlocking the inter-axle differential lock, the central differential lock, the rear axle differential lock, and the middle axle differential lock.

[0146] Based on the content of S601-S604, firstly, the state of the all-terrain control switch is obtained. Next, the first state message corresponding to the state of the all-terrain control switch is obtained. Then, according to the preset correspondence between state messages and terrain modes, the terrain mode corresponding to the first state message is obtained, and the state of each differential lock corresponding to the terrain mode is obtained. Finally, each differential lock is controlled according to its state. The method provided in this application reduces the difficulty for general drivers to drive 6×6 off-road vehicles, while also providing hardcore off-road SUVs with the ability to autonomously select differential locks, enhancing the driving pleasure of autonomous selection and reducing subsequent modification restrictions.

[0147] The above are some specific implementations of the vehicle differential lock control method provided in the embodiments of this application. Based on this, this application also provides a corresponding vehicle differential lock control device. The device provided in the embodiments of this application will be described below from the perspective of functional modularity.

[0148] See Figure 8 This figure is a schematic diagram of the structure of a vehicle differential lock control device provided in an embodiment of this application. Figure 8 As shown, the vehicle differential lock control device includes:

[0149] The first acquisition unit 801 is used to acquire the status of the all-terrain control switch.

[0150] In one possible implementation, the terrain modes include: standard mode, snow mode, sand mode, mud mode, rock mode, 6L mode, and expert mode;

[0151] The differential lock states corresponding to the terrain modes include:

[0152] The standard mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock of the middle axle, unlocking of the rear axle differential lock, unlocking of the middle axle differential lock, and unlocking of the front axle differential lock.

[0153] Snow mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock, unlocking of the rear differential lock, unlocking of the inter-axle differential lock, and unlocking of the front differential lock.

[0154] Sand mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock;

[0155] The Mud Mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock.

[0156] Rock mode corresponds to locking the center differential, locking the middle axle differential, locking the rear axle differential, locking the middle axle differential, and unlocking the front axle differential.

[0157] The 6L mode (i.e., the low-speed mode with 6 wheels driven) corresponds to locking the center differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock.

[0158] The central differential lock status, the inter-axle differential lock status, the rear differential lock status, the inter-axle differential lock status, and the front differential lock status in expert mode follow the requirements of expert mode.

[0159] In one possible implementation, the all-terrain control switch can be, but is not limited to, a multi-position knob or a set of multiple switches. When the all-terrain control switch is a multi-position knob, each position corresponds to a terrain mode; when the all-terrain control switch is a set of multiple switches, each sub-switch corresponds to a terrain mode. This application does not impose specific limitations on the form of the all-terrain control switch, as long as the terrain mode can be switched through the all-terrain control switch.

[0160] In one possible implementation, the state of the all-terrain control switch can be, but is not limited to, the switch knob of the all-terrain control switch being turned to that position or which sub-switch of the all-terrain control switch being pressed.

[0161] The second acquisition unit 802 is used to acquire the first status message corresponding to the all-terrain control switch status.

[0162] In one possible implementation, the first status message may be, but is not limited to, a message for the terrain mode corresponding to each position or sub-switch of the all-terrain control switch.

[0163] The third acquisition unit 803 is used to acquire the terrain mode corresponding to the first status message according to the preset correspondence between status messages and terrain modes, and to acquire the status of each differential lock corresponding to the terrain mode.

[0164] In one possible implementation, the pre-defined correspondence between status messages and terrain patterns can be, but is not limited to, a pre-set correspondence between a certain status message and a certain terrain pattern.

[0165] For example, Table 1 is a comparison table of electronically controlled differential locks and all-terrain modes:

[0166] Table 1 Comparison of Electronically Controlled Differential Locks and All-Terrain Modes

[0167]

[0168] In one possible implementation, the state of each differential lock can be, but is not limited to, the locked or unlocked state of each differential lock.

[0169] The fourth acquisition unit 804 is used to acquire the state of each differential lock corresponding to the terrain mode according to the preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock and the front axle differential lock.

[0170] The first control unit 805 is used to control the locking or unlocking of each differential lock according to the state of each differential lock.

[0171] In one possible implementation, the device further includes:

[0172] The fifth acquisition unit is used to acquire the status of the differential lock switch.

[0173] In one possible implementation, the state of the differential lock switch can be, but is not limited to, the state of the switch corresponding to each differential lock in the differential lock switch.

[0174] The sixth acquisition unit is used to acquire the second status message corresponding to the differential lock switch status.

[0175] In one possible implementation, the second state message is, but is not limited to, the message corresponding to each state of each differential lock switch.

[0176] The status adjustment unit is used to change the status of each differential lock according to the second status message.

[0177] In one possible implementation, the device further includes:

[0178] The seventh acquisition unit is used to acquire the state of the expert mode switch;

[0179] The termination control unit, in response to the expert mode switch being in a preset state, is used to terminate the first control unit 805 from controlling the locking or unlocking of each differential lock according to the state of each differential lock.

[0180] The eighth acquisition unit is used to acquire the third status message corresponding to the differential lock switch status.

[0181] In one possible implementation, the third-state message can be, but is not limited to, the message corresponding to each sub-switch of the expert mode switch.

[0182] The ninth acquisition unit is used to acquire the differential lock state corresponding to the third status message according to the preset correspondence between status messages and differential lock states.

[0183] In one possible implementation, the pre-defined correspondence between status messages and differential lock states can be, but is not limited to, a pre-set correspondence between the status messages of sub-switches of the expert mode switch and the differential lock states. For example, Table 2 shows the correspondence between expert mode request signals and differential lock states:

[0184] Table 2. Correspondence between Expert Mode Request Signals and Differential Locks

[0185]

[0186] The second control unit is used to control the locking or unlocking of each differential lock according to the differential lock status.

[0187] In one possible implementation, the device further includes:

[0188] The sending unit is used to send an acknowledgment signal to the differential lock indicator light and the display device according to the status of each differential lock, thereby illuminating the corresponding differential lock indicator light and causing the display device to display the corresponding signal.

[0189] In one possible implementation, the display device can be, but is not limited to, an IP (Instrument Panel). Any device capable of displaying the corresponding signals can be used as the display device in this application, and this application does not specifically limit the display device.

[0190] In one possible implementation, the corresponding signal can be, but is not limited to, the terrain pattern in which the vehicle is currently located.

[0191] In one possible implementation, the device further includes:

[0192] The tenth acquisition unit is used to acquire vehicle speed.

[0193] The termination unit, in response to the vehicle speed being greater than a preset speed, is used to terminate the second acquisition unit 802 from acquiring the first status message.

[0194] The trigger unit is used to illuminate the corresponding differential lock indicator light and cause the display device to display the corresponding prompt signal.

[0195] In one possible implementation, the preset vehicle speed can be, but is not limited to, 4 km / h. This application does not impose specific restrictions on the preset vehicle speed, and the preset vehicle speed can be adjusted according to actual needs.

[0196] In one possible implementation, the display device can be, but is not limited to, an IP (Instrument Panel). Any device capable of displaying the corresponding signals can be used as the display device in this application, and this application does not specifically limit the display device.

[0197] In one possible implementation, the device further includes:

[0198] The first cancellation module, in response to the terrain mode being a first preset mode, is used to cancel the overspeed alarm.

[0199] In one possible implementation, the first preset mode refers to the sand mode, mud mode, and 6L mode.

[0200] The first execution module, in response to the terrain mode being a first preset mode, is used to perform the first speed unlock.

[0201] In one possible implementation, the first overspeed unlock refers to unlocking the inter-axle differential lock and the central differential lock.

[0202] In one possible implementation, the device further includes:

[0203] The second cancellation module, in response to the terrain mode being the second preset mode, is used to cancel the overspeed alarm.

[0204] In one possible implementation, the second preset mode refers to the rock mode.

[0205] The second execution module, in response to the terrain mode being a second preset mode, is used to execute the second super-speed unlock.

[0206] In one possible implementation, the second overspeed unlock refers to unlocking the inter-axle differential lock, the central differential lock, the rear axle differential lock, and the middle axle differential lock.

[0207] In addition, this application embodiment also provides a vehicle state adjustment scheme generation device, the device including a memory and a processor, the memory for storing programs or code, and the processor for running the programs or code stored in the memory to implement the above-mentioned vehicle differential lock control method.

[0208] In addition, this application embodiment also provides a vehicle, the vehicle including a control module, the control module being used to execute the vehicle differential lock control method as described above.

[0209] This application provides a vehicle state adjustment scheme generation device. After the first acquisition unit 801 acquires the state of the all-terrain control switch, the second acquisition unit 802 acquires the first state message corresponding to the all-terrain control switch state. The third acquisition unit 803 acquires the terrain mode corresponding to the first state message according to a preset correspondence between the state message and the terrain mode. Then, the fourth acquisition unit 804 acquires the state of each differential lock corresponding to the terrain mode according to a preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock, and the front axle differential lock. Finally, the first control unit 805 controls each differential lock to lock or unlock according to the state of each differential lock. The method provided by this application reduces the difficulty for general drivers to drive 6×6 off-road vehicles, while also giving hardcore off-road SUVs the ability to autonomously select differential locks, improving the driving pleasure of autonomous selection and reducing subsequent modification restrictions.

[0210] The foregoing provides a detailed description of a vehicle differential lock control method, system, device, and storage medium provided in this application. The various embodiments are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0211] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0212] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0213] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0214] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle differential lock control method, characterized in that, The method includes: Get the status of the all-terrain control switch; Obtain the first status message corresponding to the all-terrain control switch status; Based on the preset correspondence between status messages and terrain patterns, obtain the terrain pattern corresponding to the first status message. Based on the preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock, and the front axle differential lock, the state of each differential lock corresponding to the terrain mode is obtained. Control the locking or unlocking of each differential lock according to the state of each differential lock; The method further includes: Get the status of the expert mode switch; In response to the expert mode switch being in a preset state, the process of controlling the locking or unlocking of each differential lock based on the state of each differential lock is terminated, and a third state message corresponding to the differential lock switch state is obtained. Based on the preset correspondence between status messages and differential lock states, the differential lock state corresponding to the third status message is obtained; Control each differential lock to lock or unlock according to the differential lock status; The execution priority of the third status message is higher than that of other status messages. The expert mode switch is used to cancel the constraint relationship between the middle axle differential lock, the middle axle inter-axle differential lock and the rear axle differential lock, so that the driver can freely combine the unlocking or locking states of the middle axle differential lock, the middle axle inter-axle differential lock and the rear axle differential lock, satisfying the driver's autonomous selection ability of the differential lock.

2. The method according to claim 1, characterized in that, After controlling the locking or unlocking of each differential lock according to its state, the method further includes: Get the status of the differential lock switch; Obtain the second status message corresponding to the differential lock switch status; The status of each differential lock is changed according to the second status message.

3. The method according to claim 1, characterized in that, The terrain modes include: Standard Mode, Snow Mode, Sand Mode, Mud Mode, Rock Mode, 6L Mode, and Expert Mode; The differential lock states corresponding to the terrain modes include: The standard mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock of the middle axle, unlocking of the rear axle differential lock, unlocking of the middle axle differential lock, and unlocking of the front axle differential lock. Snow mode corresponds to automatic locking or unlocking of the central differential lock, unlocking of the inter-axle differential lock, unlocking of the rear differential lock, unlocking of the inter-axle differential lock, and unlocking of the front differential lock. Sand mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock; The Mud Mode corresponds to locking the central differential lock, locking the middle axle differential lock, unlocking the rear axle differential lock, unlocking the middle axle differential lock, and unlocking the front axle differential lock. Rock mode corresponds to locking the central differential lock, locking the middle axle differential lock, locking the rear axle differential lock, locking the middle axle differential lock, and unlocking the front axle differential lock; The 6L mode corresponds to locking the central differential lock, locking the inter-axle differential lock, unlocking the rear differential lock, unlocking the inter-axle differential lock, and unlocking the front differential lock. The central differential lock status, the inter-axle differential lock status, the rear differential lock status, the inter-axle differential lock status, and the front differential lock status in expert mode follow the requirements of expert mode.

4. The method according to claim 1, characterized in that, After controlling the locking or unlocking of each differential lock according to its state, the method further includes: Based on the status of each differential lock, an acknowledgment signal is sent to the differential lock indicator light and the display device, thereby illuminating the corresponding differential lock indicator light and causing the display device to display the corresponding signal.

5. The method according to claim 1, characterized in that, The method further includes: Get vehicle speed; In response to the vehicle speed exceeding the preset speed, the acquisition of the first status message is stopped, and the corresponding differential lock indicator light is illuminated, causing the display device to display the corresponding prompt signal.

6. The method according to claim 1, characterized in that, The method further includes: In response to the terrain mode being the first preset mode, the overspeed alarm is canceled and the first overspeed unlock is performed.

7. The method according to claim 1, characterized in that, The method further includes: In response to the terrain mode being the second preset mode, the overspeed alarm is canceled and the second overspeed unlock is executed.

8. A vehicle differential lock control device, characterized in that, The device includes: The first acquisition unit is used to acquire the status of the all-terrain control switch; The second acquisition unit is used to acquire the first status message corresponding to the all-terrain control switch status; The third acquisition unit is used to acquire the terrain mode corresponding to the first status message according to the preset correspondence between status messages and terrain modes, and to acquire the status of each differential lock corresponding to the terrain mode. The fourth acquisition unit is used to acquire the state of each differential lock corresponding to the terrain mode according to the preset correspondence between the terrain mode and the central differential lock, the middle axle differential lock, the rear axle differential lock, the middle axle differential lock and the front axle differential lock. The first control unit is used to control the locking or unlocking of each differential lock according to the state of each differential lock; The device further includes: The seventh acquisition unit is used to acquire the state of the expert mode switch; The termination control unit, in response to the expert mode switch being in a preset state, is used to terminate the control of locking or unlocking of each differential lock based on the state of each differential lock. The eighth acquisition unit is used to acquire the third status message corresponding to the differential lock switch status; The ninth acquisition unit is used to acquire the differential lock state corresponding to the third status message according to the preset correspondence between status messages and differential lock states. The second control unit is used to control the locking or unlocking of each differential lock according to the differential lock status; The execution priority of the third status message is higher than that of other status messages. The expert mode switch is used to cancel the constraint relationship between the middle axle differential lock, the middle axle inter-axle differential lock and the rear axle differential lock, so that the driver can freely combine the unlocking or locking states of the middle axle differential lock, the middle axle inter-axle differential lock and the rear axle differential lock, satisfying the driver's autonomous selection ability of the differential lock.

9. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in and executable on the memory, wherein the processor, when executing the computer program, implements the vehicle differential lock control method as described in any one of claims 1-7.

10. A vehicle, characterized in that, The vehicle includes a control module for executing the vehicle differential lock control method as described in any one of claims 1-7.

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