Gear-type transfer case gear-shifting condition judgment method and system, gear-shifting reminding method and system and vehicle

Abstract

The invention belongs to the technical field of vehicles, and particularly discloses a gear type transfer case gear shifting condition judgment method and system, a gear shifting reminding method and system and a vehicle. The method comprises the steps that a gear shifting request of a driver is received, namely, the driver intends to switch a current gear to a target gear, and driving state information of a vehicle is obtained at the same time; performing bit operation on the current driving state information, the target gear and the current gear switching condition of the vehicle, and judging whether the target gear and the current gear switching meet the condition or not according to a bit operation result; if the gear shifting condition is met, the gear shifting operation of the gear shifting request is executed, and if the gear shifting condition is not met, the gear shifting operation of the gear shifting request is not executed, and a gear shifting operation prompt with the highest priority is sent according to the set sending priority. The safety and accuracy of gear shifting operation are remarkably improved, gear shifting under unsuitable conditions is avoided, and therefore potential damage to a vehicle transmission system is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicles, and more specifically, relates to a gear transfer case shift condition judgment, gear shift reminder method, system and vehicle. Background Art

[0002] In modern automotive technology, the transfer case is an important part of the vehicle's transmission system, responsible for adjusting the power output according to driving conditions to adapt to different driving environments. Traditional transfer case designs usually include multiple gears, such as high gear (H gear), low gear (L gear), neutral gear (N gear) and differential lock function to improve the vehicle's passability and stability.

[0003] Most existing vehicles use a shifting assembly to identify the driver's shifting needs and determine whether the current vehicle can shift gears through calculation. However, in actual use, the shifting fails due to the driver's misjudgment or other reasons, affecting the driving experience. In addition, the transfer case mainly realizes separation and connection through two sets of gears, and its structure and principle are similar to the first and second shafts of the gearbox. At present, most vehicles on the market have developed a gear shift reminder function for gearbox shifting, but the transfer case is a power transmission hub. During the vehicle driving process, it is also very important to switch gears reasonably and correctly. The transfer case of the prior art has some limitations and shortcomings in the shifting operation, mainly including: (1) Simple shifting logic: The shifting logic of most transfer cases is relatively simple, and it is impossible to intelligently judge whether it is suitable for shifting gears according to the real-time status of the vehicle, resulting in shifting gears under inappropriate conditions, which may cause damage to the vehicle's transmission system. (2) Lack of shifting reminder: When the driver performs a shifting operation, the prior art usually does not provide clear shifting condition judgment and reminder, so that the driver may make wrong operations when he is not clear whether the current vehicle status is suitable for shifting gears. (3) The differential lock function is inconvenient to use: Although the differential lock function is very useful under certain conditions, the activation and release of the differential lock function in the prior art is usually complicated and not intuitive and convenient. (4) Shift restrictions under static and dynamic conditions: The shift restrictions of the existing transfer case when the vehicle is stationary or moving are not clear enough, and there is a lack of intelligent judgment on shifting under dynamic conditions of the vehicle, which may lead to shift failure or vehicle performance degradation.

[0004] Based on the above defects and deficiencies, and in order to improve the driving experience and protect mechanical components, it is necessary to remind the driver whether the shifting conditions are currently met when shifting gears, so as to improve the shifting reliability of the transfer case. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a gear-type transfer case shift condition judgment, shift reminder method, system and vehicle, so as to improve the driver's driving experience, cultivate good driving habits of the driver, reasonably use the transfer case gear, and extend the service life of the mechanical parts.

[0006] To achieve the above object, according to one aspect of the present invention, a method for determining shifting conditions and reminding shifting of a gear type transfer case is provided, comprising the following steps:

[0007] Step 1: receiving a gear shift request from the driver, i.e., the driver intends to switch the current gear to the target gear, and simultaneously obtaining the driving state information of the vehicle;

[0008] Step 2: Perform bitwise operation on the vehicle's current driving state information, the target gear position, and the current gear position switching condition, and determine whether the target gear position and the current gear position switching condition are satisfied according to the bitwise operation result;

[0009] Step three: if the gear shifting condition is met, the gear shifting operation of the gear shifting request is executed; if the gear shifting condition is not met, the gear shifting operation of the gear shifting request is not executed, and the gear shifting operation reminder with the highest priority is sent according to the set sending priority.

[0010] As further preferred, in step one, the driving status information includes the current vehicle speed, brake pedal status, and transmission gear position signal.

[0011] As further preferred, step 2 specifically includes the following steps:

[0012] (21) constructing and storing the correspondence between the shifting operation and the shifting conditions between each gear;

[0013] (22) After receiving the gear shift request, enter the gear shift condition judgment mode to judge whether the current vehicle speed is between a certain threshold, whether the brake signal is valid, whether the gearbox is in neutral, and output the result after each condition judgment;

[0014] (23) Based on the judgment result, the correspondence between the shifting operation and the shifting condition between each gear, as well as the current gear information and the target gear information, a bit operation is used to judge whether the current vehicle driving condition meets the shifting condition of the target gear.

[0015] As a further preferred method, judging whether the target gear position and the current gear position switching satisfy the condition according to the bit operation result specifically comprises the following steps:

[0016] (221) judging whether the gear shift speed satisfies the condition according to the current vehicle speed, if so, proceeding to step (222), if not, not executing the gear shift operation requested, sending a transfer case prompt signal to prompt the vehicle to reduce the speed;

[0017] (222) determining whether the brake pedal meets the braking condition. If the condition is met, the process proceeds to step (223). If the condition is not met, the shift operation requested is not performed, and a transfer case prompt signal is sent to prompt that a braking operation needs to be performed.

[0018] (223) Whether the power interruption condition of the current transmission is satisfied, if satisfied, the gear shift operation is performed, if not satisfied, a transfer case prompt signal is sent to prompt the transmission to shift to neutral.

[0019] As a further preferred embodiment, in step 2, the gear shifting condition further includes:

[0020] When the target gear is neutral or neutral differential lock gear, the gear shifting condition is that the vehicle speed does not exceed the first preset vehicle speed threshold, the transmission is in neutral and the brake pedal is effective;

[0021] When the target gear is a non-neutral gear and a non-neutral differential lock gear, the gear shifting condition is that the vehicle speed does not exceed a first preset vehicle speed threshold and the transmission is in neutral;

[0022] When switching between the neutral gear and the neutral differential lock gear, it is only required that the vehicle speed is not higher than the first preset vehicle speed threshold;

[0023] When the vehicle is in motion, only the rabbit gear and the high differential lock gear, and the turtle gear and the low differential lock gear are allowed to switch between each other;

[0024] The shifting condition for switching between the rabbit gear and the high differential lock gear is that the vehicle speed does not exceed the third preset vehicle speed threshold;

[0025] The shifting condition for switching between the turtle gear and the low differential lock gear is that the vehicle speed does not exceed the second preset vehicle speed threshold.

[0026] As a further preferred embodiment, in step 2, in order to prevent misjudgment, each shift condition needs to be repeatedly judged, and when the shift condition is met for more than 8 consecutive times, the shift operation is performed;

[0027] Correspondingly, when it is determined for eight consecutive times that the current vehicle driving state information does not meet the gear shifting condition, the gear shifting operation is not performed, and a corresponding gear shifting prompt is output.

[0028] As a further preference, when the gear shifting conditions are not met, the output gear shifting reminder information includes that the current vehicle speed is not met, the brake pedal is not depressed, and the gearbox is not in neutral, and the gear shifting reminder information automatically disappears after a specified time point.

[0029] According to another aspect of the present invention, a gear-type transfer case shift condition judgment and shift reminder system is provided, comprising:

[0030] A controller, for receiving a gear shift request from a driver, i.e., the driver intends to switch the current gear to a target gear;

[0031] The vehicle driving state information acquisition module is used to obtain the vehicle driving state information and send the vehicle driving state information to the controller;

[0032] A gear shift condition judgment module is used to perform bitwise operations on the vehicle's current driving state information, the target gear position, and the current gear position switching conditions, and judge whether the target gear position and the current gear position switching meet the conditions according to the bitwise operation results, and send the judgment result to the controller;

[0033] The gear transfer case, if the gear shifting conditions are met, the controller controls the gear transfer case to perform the gear shifting operation of the gear shifting request; if the gear shifting conditions are not met, the controller controls the gear transfer case not to perform the gear shifting operation of the gear shifting request. At the same time, the controller sends the highest priority gear shifting operation reminder according to the set sending priority.

[0034] As further preferred, the gear transfer case includes: a rabbit gear, a turtle gear, a neutral gear, a low gear differential lock gear, a high gear differential lock and a neutral gear differential lock.

[0035] According to another aspect of the present invention, a vehicle is provided, including a control system, wherein the control system is used to execute a gear transfer case shift condition judgment and shift reminder method according to any one of the above embodiments or a combination of multiple embodiments.

[0036] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0037] 1. The present invention monitors the vehicle's driving status in real time, including vehicle speed, brake pedal status, and gearbox gear position signal, to intelligently determine whether the preset shifting conditions are met. This intelligent judgment mechanism significantly improves the safety and accuracy of the shifting operation, avoids shifting under inappropriate conditions, and thus reduces potential damage to the vehicle's transmission system.

[0038] 2. The present invention provides clear gear shift reminder information to help the driver better understand whether the current vehicle state is suitable for gear shifting. This reminder mechanism not only reduces the driver's operating errors, but also greatly enhances the driving experience and the convenience of operation by automatically performing the gear shift operation when the conditions are met, or providing a clear reason for rejecting the gear shift when the conditions are not met.

[0039] 3. The shift condition judgment and shift reminder method of the present invention ensures that the vehicle can run in the most appropriate gear under various driving conditions. This not only optimizes the power output and performance of the vehicle, but also helps to improve fuel economy, especially in urban congestion or changeable road conditions, which can use power more reasonably and reduce unnecessary fuel consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a flow chart of a gear-type transfer case shift condition judgment and shift reminder method involved in an embodiment of the present invention;

[0041] Figure 2 The present invention is a flow chart of a gear-type transfer case shift reminder according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] like Figure 1 and Figure 2 As shown, a method for judging gear transfer case shifting conditions and reminding gear shifting provided by an embodiment of the present invention comprises the following steps: receiving a gear shifting request from a driver and acquiring driving state information of a vehicle; judging a gear shifting condition corresponding to the current driving state of the vehicle and the gear shifting request; executing a gear shifting operation when the judgment result satisfies the gear shifting condition, otherwise, not executing a gear shifting operation and outputting a gear shifting reminder message.

[0044] Specifically, they include:

[0045] Step 1: receiving a gear shift request from the driver, i.e., the driver intends to switch the current gear to the target gear, and simultaneously obtaining the vehicle's driving state information, which includes the current vehicle speed, brake pedal state, and gearbox gear signal.

[0046] Step 2: Perform bitwise operations on the vehicle's current driving state information, the target gear position, and the current gear position switching conditions, and determine whether the target gear position and the current gear position switching conditions meet the bitwise operation results. Specifically, the following steps are included:

[0047] (21) constructing and storing the correspondence between the shifting operation and the shifting conditions between each gear;

[0048] (22) After receiving the gear shift request, the gear shift condition judgment mode is entered to judge whether the current vehicle speed is between a certain threshold, whether the brake signal is valid, whether the gearbox is in neutral, and output the result after each condition judgment. The judgment of whether the target gear and the current gear switching meet the conditions according to the bit operation result specifically includes the following steps:

[0049] (221) judging whether the gear shift speed satisfies the condition according to the current vehicle speed, if so, proceeding to step (222), if not, not executing the gear shift operation requested, sending a transfer case prompt signal to prompt the vehicle to reduce the speed;

[0050] (222) determining whether the brake pedal meets the braking condition. If the condition is met, the process proceeds to step (223). If the condition is not met, the shift operation requested is not performed, and a transfer case prompt signal is sent to prompt that a braking operation needs to be performed.

[0051] (223) Whether the power interruption condition of the current transmission is satisfied, if satisfied, the gear shift operation is performed, if not satisfied, a transfer case prompt signal is sent to prompt the transmission to shift to neutral.

[0052] (23) Based on the judgment result, the correspondence between the shifting operation and the shifting condition between each gear, as well as the current gear information and the target gear information, a bit operation is used to judge whether the current vehicle driving condition meets the shifting condition of the target gear.

[0053] In addition, in this step, the gear shifting conditions also include:

[0054] When the target gear is neutral or neutral differential lock gear, the shifting condition is that the vehicle speed does not exceed the first preset vehicle speed threshold, the gearbox is in neutral and the brake pedal is effective; when the target gear is non-neutral and non-neutral differential lock gear, the shifting condition is that the vehicle speed does not exceed the first preset vehicle speed threshold and the gearbox is in neutral; when switching between neutral and neutral differential lock gear, only the vehicle speed is required not to be higher than the first preset vehicle speed threshold; when the vehicle is driving, only the rabbit gear and the high differential lock gear, and the turtle gear and the low differential lock gear are allowed to switch each other; the shifting condition for switching between the rabbit gear and the high differential lock gear is that the vehicle speed does not exceed the third preset vehicle speed threshold; the shifting condition for switching between the turtle gear and the low differential lock gear is that the vehicle speed does not exceed the second preset vehicle speed threshold.

[0055] Specifically, the following table shows the matching of gear switching and shifting conditions:

[0056]

[0057]

[0058] In addition, in order to prevent misjudgment, each gear shifting condition needs to be repeatedly judged. When the gear shifting condition is met for more than 8 consecutive times, the gear shifting operation is performed; correspondingly, when the current vehicle driving status information is judged not to meet the gear shifting condition for 8 consecutive times, the gear shifting operation is not performed, and the corresponding gear shifting prompt is output.

[0059] Step 3: If the gear shifting condition is met, the gear shifting operation of the gear shifting request is executed; if the gear shifting condition is not met, the gear shifting operation of the gear shifting request is not executed, and the gear shifting operation reminder with the highest priority is sent according to the set sending priority. When the gear shifting condition is not met, the output gear shifting reminder information includes that the current vehicle speed is not met, the brake pedal is not pressed, and the gearbox is not in neutral, and the gear shifting reminder information disappears automatically after the specified time point.

[0060] This embodiment specifically describes any of the above embodiments or a combination of multiple embodiments. In this embodiment, the gear transfer case is designed with the gear positions of rabbit gear (H gear), turtle gear (low L gear), neutral gear (N gear), low differential lock gear (LL gear), high differential lock gear (HL gear), and neutral differential lock gear (NL gear). This embodiment mainly proposes a shift condition judgment and shift reminder method based on the gear transfer case. Figure 1 and Figure 2 As shown, the method comprises the following steps:

[0061] (1) receiving a gear shift request from the driver and simultaneously obtaining the vehicle's driving status information (including vehicle speed, whether the brake is pressed, transmission gear position signal, etc.), wherein the gear shift request refers to the driver's intention to switch the current gear to the target gear;

[0062] The specific implementation is as follows:

[0063] When the driver needs to shift gears, he can operate the vehicle's shift switch to shift gears, thereby generating a corresponding shift request and sending it to the vehicle's controller, wherein the shift request carries the vehicle's current gear information and target gear information. After receiving the shift request from the shifter, the controller responds to the shift request and obtains the vehicle's driving status information. The vehicle's driving status information can be forwarded and obtained through sensors on the vehicle or other controllers, including the current vehicle speed, whether the brake pedal is effective, whether the current gearbox is in neutral, etc.

[0064] (2) Based on the current driving state of the vehicle and the shift condition corresponding to the shift request, the current vehicle speed, whether the brake pedal is effective, whether the transmission is in neutral, and other conditions are judged to determine whether the shift condition is met.

[0065] Specific implementation method: The corresponding relationship between the shifting operation and the shifting conditions between each gear is pre-stored in the controller. After receiving the shifting instruction, enter the shifting condition judgment module to judge whether the current vehicle speed is between a certain threshold, whether the braking signal is valid, whether the gearbox is in neutral, and output the result after each condition judgment. Further, the judgment result is input to the query module that pre-stores the matching relationship between the shifting operation and the shifting conditions between each gear, and based on the current gear information and the target gear information carried in the shifting request, the corresponding relationship between each gear switching and the shifting conditions pre-stored in the controller is queried by table lookup, and finally, it is judged by bit operation whether the current vehicle driving condition fed back by the previous module meets the shifting condition of the corresponding gear.

[0066] In order to prevent misjudgment, each gear shift condition needs to be judged repeatedly. The gear shift operation can only be performed when the gear shift condition is met for more than 8 consecutive times. The same is true for the judgment of gear shift failure. Only when it is judged for 8 consecutive times that the current vehicle driving state does not meet the gear shift conditions, the gear shift operation will not be performed and the corresponding gear shift prompt will be output.

[0067] Optionally, if the vehicle is currently stationary or the speed is very low, the six gears can be switched at will.

[0068] 1. Assuming that the target gear is neutral (N gear) or neutral differential lock gear (NL gear) (excluding the case where the initial gear is N gear or NL gear), most of the time when the vehicle is starting or the driver accidentally touches the gear, the gear shifting conditions that meet the gear shifting operation are that the vehicle speed does not exceed the first preset speed threshold, the gearbox is in neutral and the brake pedal is valid. If the current driving state of the vehicle meets the gear shifting conditions, the gear shifting operation is performed; if the current driving state of the vehicle does not meet any of the conditions, the gear shifting operation is refused, and the corresponding gear shifting reminder is output and the corresponding fault light is turned on. If multiple gear shifting conditions are not met at the same time, the current speed is first prompted to slow down to the first preset speed threshold, followed by a prompt that the brake pedal is not pressed, and finally a prompt that the gearbox is not in N gear, please put the gearbox in N gear. And in order not to affect the driver's experience, the reminder disappears after a period of time.

[0069] 2. Assuming that the target gear is neither N nor NL (excluding HL and H, LL and L), most of the time the vehicle starts or the driver accidentally touches the gear. The gear shifting conditions that meet the gear shifting operation are that the vehicle speed does not exceed the first preset speed threshold and the gearbox is in neutral. There is no requirement for whether the brake signal is valid. If the current driving state of the vehicle meets the gear shifting conditions, the gear shifting operation is performed; if the current driving state of the vehicle does not meet any of the conditions, the gear shifting operation is refused, and the corresponding gear shifting reminder is output and the corresponding fault light is turned on. If multiple gear shifting conditions are not met at the same time, the current speed is first prompted to reduce the speed to the first preset speed threshold, and the gearbox is not in N gear. Please put the gearbox in N gear. In order not to affect the driver's experience, the reminder disappears after a period of time.

[0070] 3. When switching between N gear and NL gear, the vehicle speed is only required to be no higher than the first preset speed threshold. Only when the speed condition is not met during the gear shifting process, the gear shifting operation will be rejected, and a fault prompt "The current speed does not meet the requirements, please stop the vehicle" will be output, and the fault light will be turned on. In order not to affect the driver's experience, the reminder will disappear after a period of time.

[0071] Optionally, if the vehicle is in motion, the gears cannot be switched arbitrarily, and only two situations are allowed: the vehicle's rabbit gear (H gear) and the high differential lock gear (HL gear) are switched between each other, and the turtle gear (L gear) and the low differential lock gear (LL gear) are switched between each other.

[0072] 1. The vehicle's rabbit gear (H gear) and high differential lock gear (HL gear) switch back and forth. This situation mostly occurs when the vehicle is in motion or the driver touches the gear by mistake. Braking or interrupting the power during driving is dangerous. Therefore, the shifting conditions that meet the shifting operation are that the vehicle speed does not exceed the third preset speed threshold, and there is no requirement for whether the brake signal is valid or whether the gearbox is in neutral. If the current vehicle driving state meets the shifting conditions, the shifting operation is performed; if the current vehicle driving state does not meet the speed conditions, the shifting operation is refused, and the output prompts that the current speed does not meet the requirements, please slow down to below the third preset speed threshold, and the fault light is lit.

[0073] 2. The turtle gear (L gear) and the low differential lock gear (LL gear) switch with each other. This situation mostly occurs when the vehicle is in motion or the driver touches it by mistake. The turtle gear (L gear) and the low differential lock gear (LL gear) are often used to escape from difficulties or when the vehicle speed is low. Therefore, the shifting condition is that the vehicle speed does not exceed the second preset speed threshold, and there is no requirement for whether the brake signal is valid or whether the gearbox is in neutral. If the current vehicle driving state meets the shifting condition, the shifting operation is performed; if the current vehicle driving state does not meet the speed condition, the shifting operation is refused, and the output prompts that the current speed does not meet the requirements, please slow down to below the second preset speed threshold, and the fault light is lit.

[0074] (3) If the gear shifting conditions are met, the gear shifting operation is performed; if the gear shifting conditions are not met, the gear shifting operation is not performed, and a gear shifting reminder message corresponding to the gear shifting request is output to prompt the driver the reason for the gear shifting failure and guide him to shift gears correctly.

[0075] According to another aspect of the present invention, a gear transfer case shift condition judgment and shift reminder system is provided, comprising: a controller, used to receive a shift request from a driver, that is, the driver intends to switch the current gear to a target gear; a vehicle driving state information acquisition module, used to obtain the vehicle driving state information, and send the vehicle driving state information to the controller; a shift condition judgment module, used to perform bit operations on the vehicle's current driving state information, the target gear and the current gear switching conditions, and judge whether the target gear and the current gear switching meet the conditions according to the bit operation results, and send the judgment result to the controller; a gear transfer case, if the shift condition is met, the controller controls the gear transfer case to perform the shift operation of the shift request, if the shift condition is not met, the controller controls the gear transfer case not to perform the shift operation of the shift request, and at the same time, the controller sends the highest priority shift operation reminder according to the set sending priority. And the system is used to implement the method of any embodiment or a combination of multiple embodiments described above.

[0076] According to another aspect of the present invention, a vehicle is provided, including a control system, wherein the control system is used to execute the method of any one of the above embodiments or a combination of multiple embodiments.

[0077] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for judging shifting conditions and reminding shifting of a gear type transfer case, characterized in that: The following steps are involved: Step 1: receiving a gear shift request from the driver, i.e., the driver intends to switch the current gear to the target gear, and simultaneously obtaining the driving state information of the vehicle; Step 2: Perform bitwise operation on the vehicle's current driving state information, the target gear position, and the current gear position switching condition, and determine whether the target gear position and the current gear position switching condition are satisfied according to the bitwise operation result; Step three: if the gear shifting condition is met, the gear shifting operation of the gear shifting request is executed; if the gear shifting condition is not met, the gear shifting operation of the gear shifting request is not executed, and the gear shifting operation reminder with the highest priority is sent according to the set sending priority.

2. A method for determining shifting conditions and reminding shifting of a gear type transfer case according to claim 1, characterized in that: In step one, the driving status information includes the current vehicle speed, brake pedal status, and transmission gear position signal.

3. A method for determining shifting conditions and reminding shifting of a gear type transfer case according to claim 2, characterized in that: Step 2 specifically includes the following steps: (21) constructing and storing the correspondence between the shifting operation and the shifting conditions between each gear; (22) After receiving the gear shift request, enter the gear shift condition judgment mode to judge whether the current vehicle speed is between a certain threshold, whether the brake signal is valid, whether the gearbox is in neutral, and output the result after each condition judgment; (23) Based on the judgment result, the correspondence between the shifting operation and the shifting condition between each gear, as well as the current gear information and the target gear information, a bit operation is used to judge whether the current vehicle driving condition meets the shifting condition of the target gear.

4. A method for determining shifting conditions and reminding shifting of a gear type transfer case according to claim 3, characterized in that: The step of judging whether the target gear position and the current gear position switch meet the conditions according to the bit operation result specifically comprises the following steps: (221) judging whether the gear shift speed satisfies the condition according to the current vehicle speed, if so, proceeding to step (222), if not, not executing the gear shift operation requested, sending a transfer case prompt signal to prompt the vehicle to reduce the speed; (222) determining whether the brake pedal meets the braking condition. If the condition is met, the process proceeds to step (223). If the condition is not met, the shift operation requested is not performed, and a transfer case prompt signal is sent to prompt that a braking operation needs to be performed. (223) Whether the power interruption condition of the current transmission is satisfied, if satisfied, the gear shift operation is performed, if not satisfied, a transfer case prompt signal is sent to prompt the transmission to shift to neutral.

5. The method for determining shifting conditions and reminding shifting of a gear type transfer case according to claim 1, characterized in that: In step 2, the gear shifting conditions also include: When the target gear is neutral or neutral differential lock gear, the gear shifting condition is that the vehicle speed does not exceed the first preset vehicle speed threshold, the transmission is in neutral and the brake pedal is effective; When the target gear is a non-neutral gear and a non-neutral differential lock gear, the gear shifting condition is that the vehicle speed does not exceed a first preset vehicle speed threshold and the transmission is in neutral; When switching between the neutral gear and the neutral differential lock gear, it is only required that the vehicle speed is not higher than the first preset vehicle speed threshold; When the vehicle is in motion, only the rabbit and high differential lock gears, and the turtle and low differential lock gears are allowed to switch between each other; The shifting condition for switching between the high-speed differential lock gear and the high-speed differential lock gear is that the vehicle speed does not exceed the third preset vehicle speed threshold; The shifting condition for switching between the low gear and the low differential lock gear is that the vehicle speed does not exceed the second preset vehicle speed threshold.

6. The method for determining shifting conditions and reminding shifting of a gear type transfer case according to claim 1, characterized in that: In step 2, in order to prevent misjudgment, each shift condition needs to be repeatedly judged. When the shift condition is met for more than 8 consecutive times, the shift operation is performed; Correspondingly, when it is determined for eight consecutive times that the current vehicle driving state information does not meet the gear shifting condition, the gear shifting operation is not performed, and a corresponding gear shifting prompt is output.

7. The method for determining shifting conditions and reminding shifting of a gear type transfer case according to claim 1, characterized in that: When the gear shifting conditions are not met, the output gear shifting reminder information includes that the current vehicle speed is not met, the brake pedal is not pressed, and the transmission is not in neutral, and the gear shifting reminder information disappears automatically after the specified time point.

8. A gear-type transfer case shift condition judgment and shift reminder system, characterized in that: include: A controller, for receiving a gear shift request from a driver, i.e., the driver intends to switch the current gear to a target gear; The vehicle driving state information acquisition module is used to obtain the vehicle driving state information and send the vehicle driving state information to the controller; A gear shift condition judgment module is used to perform bitwise operations on the vehicle's current driving state information, the target gear position, and the current gear position switching conditions, and judge whether the target gear position and the current gear position switching meet the conditions according to the bitwise operation results, and send the judgment result to the controller; The gear transfer case, if the gear shifting conditions are met, the controller controls the gear transfer case to perform the gear shifting operation of the gear shifting request; if the gear shifting conditions are not met, the controller controls the gear transfer case not to perform the gear shifting operation of the gear shifting request. At the same time, the controller sends the highest priority gear shifting operation reminder according to the set sending priority.

9. The gear-type transfer case shift condition judgment and shift reminder system according to claim 8, characterized in that: The gear type transfer case comprises: a rabbit gear, a turtle gear, a neutral gear, a low gear differential lock gear, a high gear differential lock and a neutral gear differential lock.

10. A vehicle, characterized in that: The method comprises a control system, wherein the control system is used to execute the method according to any one of claims 1 to 7.

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