Gear control method, control device, vehicle, and storage medium

Abstract

The application discloses a gear control method, a control device, a vehicle and a storage medium. The gear control method comprises the following steps: acquiring a current operation mode of a vehicle; selecting a target gear shift sequence according to the current operation mode; and controlling gear shift of the vehicle according to the target gear shift sequence. In the gear control method, the vehicle can control the vehicle to shift gears according to the target gear shift sequence according to the current operation mode, that is, the vehicle shifts gears according to the gear shift sequence in the engine mode, and the vehicle skips gears and shifts gears according to the gear shift sequence in the motor mode. Therefore, the gear shift frequency of the vehicle in the motor mode can be reduced, the responsiveness of the motor power can be improved, the electric drive energy recovery efficiency and smoothness can be improved, the energy consumption can be reduced, the reliability and service life of the gearbox can be improved, and the normal operation of the vehicle in the engine mode is not affected.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to a gear control method, control device, vehicle, and storage medium. Background Technology

[0002] With increasingly stringent regulations on vehicle fuel economy and emissions, hybrid electric vehicles have experienced rapid development. Due to the differences in performance between the electric motor and engine in hybrid vehicles, the frequency of gear shifts varies significantly depending on the driving mode. Frequent gear shifts during electric motor operation increase energy loss, affect the motor's power response, and ultimately impact the driving experience. Summary of the Invention

[0003] This invention provides a gear control method, a control device, a vehicle, and a storage medium.

[0004] The gear control method of this application includes:

[0005] Obtain the vehicle's current operating mode;

[0006] Select the target shift sequence according to the current operating mode;

[0007] The vehicle shifts gears according to the target shift sequence.

[0008] In the gear control method of this application, the vehicle can be controlled to shift gears in the target gear sequence according to the current operating mode. That is, when running in engine mode, the vehicle shifts gears sequentially according to the gear sequence, and when running in electric motor mode, it skips gears in the gear sequence. This reduces the shifting frequency of the vehicle in electric motor mode, improves the responsiveness of the electric motor power, improves the efficiency and smoothness of electric drive energy recovery, reduces energy consumption, and improves the reliability and lifespan of the transmission, while not affecting the normal operation of the vehicle in engine mode.

[0009] In some implementations, controlling the vehicle's gear shifting according to the target shift sequence includes:

[0010] When the vehicle is running in engine mode, control the vehicle to shift gears sequentially according to gear order; or

[0011] When the vehicle is running in motor mode, the vehicle is controlled to shift gears sequentially.

[0012] In some embodiments, the gear control method includes:

[0013] When the vehicle is operating in electric motor mode and a gearbox malfunction occurs, the vehicle is controlled to shift gears sequentially according to the gear order.

[0014] In some implementations, controlling the vehicle to shift gears sequentially according to gear order when the vehicle is operating in electric motor mode and a gearbox failure occurs includes:

[0015] When the vehicle is operating in electric motor mode and a gearbox failure occurs, the initial target gear of the vehicle is calculated based on the current gear.

[0016] The vehicle is controlled to shift gears sequentially according to the initial target gear position.

[0017] In some implementations, the gearbox malfunction includes a failure in a particular gear.

[0018] In some implementations, controlling the vehicle's gear shifting according to the target shift sequence includes:

[0019] The vehicle is controlled to switch to the target gear according to the target shift sequence based on the vehicle speed.

[0020] In some embodiments, controlling the vehicle to switch to a target gear based on the vehicle speed includes:

[0021] When the current speed of the vehicle is greater than the speed corresponding to the current gear, the vehicle is controlled to shift to the target gear.

[0022] When the vehicle's current speed is less than the speed corresponding to the current gear, the vehicle's gear is controlled to be downshifted to the target gear.

[0023] The gear control device according to the embodiments of this application includes an acquisition module, a processing module, and a control module. The acquisition module is used to acquire the current operating mode of the vehicle; the processing module is used to select a target gear shifting sequence according to the current operating mode; and the control module is used to control the vehicle to shift gears according to the target gear shifting sequence.

[0024] The vehicle according to the embodiments of this application includes a transmission and a processor, the processor being used to execute the steps of the gear control method described in any one of the above embodiments.

[0025] The storage medium in the embodiments of this application includes a non-volatile computer-readable storage medium with a computer executable program, which, when executed by one or more processors, implements the gear control method described in any of the above embodiments.

[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0028] Figure 1 This is a flowchart of the gear control method according to the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the gear control device according to an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0031] Figure 4 This is a flowchart of the gear control method according to the embodiments of this application;

[0032] Figure 5 This is a flowchart of the gear control method according to the embodiments of this application;

[0033] Figure 6 This is a flowchart of the gear control method according to the embodiments of this application;

[0034] Figure 7 This is a flowchart of the gear control method according to the embodiments of this application;

[0035] Figure 8 This is a flowchart of the gear control method according to the embodiments of this application;

[0036] Figure 9 This is a flowchart of the gear control method according to the embodiments of this application;

[0037] Figure 10 This is a flowchart of the gear control method according to the embodiments of this application. Detailed Implementation

[0038] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0039] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] Please see Figure 1 The gear control method of this application includes:

[0041] Step S10: Obtain the current operating mode of vehicle 100;

[0042] Step S20: Select the target shift sequence according to the current operating mode;

[0043] Step S30: Control the vehicle to shift gears 100 according to the target shift sequence.

[0044] Please see Figure 2 The gear control device 200 of this application includes an acquisition module 201, a processing module 202, and a control module 203. The gear control method in the above embodiment can be implemented by the gear control device 200. Specifically, step S10 can be implemented by the acquisition module 201, step S20 can be implemented by the processing module 202, and step S30 can be implemented by the control module 203.

[0045] Alternatively, it can be said that the acquisition module 201 is used to acquire the current operating mode of the vehicle 100; the processing module 202 is used to select the target shift sequence according to the current operating mode; and the control module 203 is used to control the vehicle 100 to shift gears according to the target shift sequence.

[0046] Please see Figure 3 The vehicle 100 of this application includes a processor 101 and a gearbox 102. The gearbox 102 can be installed on the vehicle 100 for changing gears. The processor 101 can control the shifting logic of the gearbox 102. In other words, the processor 101 is used to execute any step of the gear control method in the above embodiments.

[0047] In the gear control method, control device 200, and vehicle 100 of this application, the vehicle 100 can be controlled to shift gears according to the target gear sequence based on the current operating mode. That is, when running in engine mode, the vehicle shifts gears sequentially according to the gear sequence, and when running in electric motor mode, it skips gears according to the gear sequence. This reduces the shifting frequency of the vehicle 100 in electric motor mode, improves the responsiveness of electric motor power, improves the efficiency and smoothness of electric drive energy recovery, reduces energy consumption, and improves the reliability and lifespan of the transmission 102, while not affecting the normal operation of the vehicle 100 in engine mode.

[0048] Specifically, vehicle 100 may include, but is not limited to, a hybrid electric vehicle with a P2 structure. That is to say, vehicle 100 may have two drive modes: an engine and an electric motor. Users can choose the appropriate drive mode according to their actual needs, so that users can choose the appropriate drive mode in different situations to have a better driving experience.

[0049] In step S10, the acquisition module 201 can acquire the current operating mode of the vehicle 100 according to the user's selection. The current operating mode includes the motor operating mode and the engine operating mode. For example, the central control system of the vehicle 100 may have an operating mode option. The user can select the corresponding operating mode through the central control panel, and the processor 101 can switch the operating mode of the vehicle 100 to the selected operating mode, i.e., the current operating mode, according to the user's selection. Of course, this application does not limit the method of selecting the operating mode of the vehicle 100.

[0050] In step S20, the processing module 202 can change the shift sequence to the corresponding shift sequence, i.e., the target shift sequence, based on the current operating mode obtained by the acquisition module 201. The shift sequence can include shifting gears sequentially according to the gear order or skipping gears according to the gear order.

[0051] Among them, due to the characteristics of high torque, narrow speed range and small high efficiency range of the engine, when the vehicle 100 is running in engine mode, the shifting sequence can control the engine to keep it in the optimal operating range by shifting gears in the order of gears, and the overall power, emissions and fuel economy of the vehicle 100 are better.

[0052] Electric motors have the characteristics of low speed, high torque, and a wide efficiency range, so they require fewer gears from the transmission 102 than engines. When the vehicle 100 is running in electric motor mode, shifting gears in sequence can better reduce energy loss, improve energy recovery efficiency, and enhance smoothness, thus allowing the excellent performance of the electric motor to be better utilized.

[0053] In step S30, the control module 203 can adjust the current shift sequence to the target shift sequence according to the instructions of the processing module 202, and perform shifting on the vehicle 100 according to the target shift sequence. In this way, the operating mode of the vehicle 100 corresponds to the shift sequence, enabling the vehicle 100 to better perform its function, extending the service life of the transmission 102, and providing the user with a better driving experience.

[0054] Please see Figure 4 and Figure 5 In some implementations, controlling vehicle 100 to shift gears according to a target shift sequence includes:

[0055] Step S31: When vehicle 100 is running in engine mode, control vehicle 100 to shift gears sequentially according to gear order; or

[0056] Step S32: When the vehicle 100 is running in motor mode, control the vehicle 100 to shift gears in sequence.

[0057] In this way, the vehicle 100 can shift gears according to the corresponding shift sequence based on the operating mode, which can better improve the responsiveness of the electric motor power, improve the efficiency and smoothness of electric drive energy recovery, reduce energy consumption, and improve the reliability and lifespan of the gearbox 102 when the vehicle 100 is running in electric motor mode.

[0058] Specifically, in step S31, when the vehicle 100 is driven by the engine, the shifting logic of the transmission 102 can shift gears sequentially according to the gear order. The vehicle 100 can generally have gears 1-8. Shifting gears sequentially can be understood as follows: when the vehicle 100 is accelerating, it will shift up in the order of 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, and 8th gear; when the vehicle 100 is decelerating, it will shift down in the order of 8th, 7th, 6th, 5th, 4th, 3rd, 2nd, and 1st gear.

[0059] In step S32, when the vehicle 100 is driven by the electric motor, the shifting logic of the transmission 102 can skip gears in sequence. Skipping gears in sequence can be understood as follows: when the vehicle 100 is accelerating, the vehicle 100 will shift up in the order of 1st, 3rd, 5th, 7th or 2nd, 4th, 6th, 8th; when the vehicle 100 is decelerating, the vehicle 100 will shift down in the order of 7th, 5th, 3rd, 1st or 8th, 6th, 4th, 2nd.

[0060] Please see Figure 6 In some implementations, the gear control method includes:

[0061] Step S321: When the vehicle 100 is running in electric motor mode and a gearbox 102 malfunction occurs, control the vehicle 100 to shift gears sequentially according to the gear order.

[0062] In some embodiments, a transmission 102 malfunction may include a failure in a specific gear. It is understood that, due to an error in the gearbox logic or other reasons, the transmission 102 may fail to shift to a specific gear during gear shifting.

[0063] In this situation, when vehicle 100 performs a skip-gear shifting method in motor mode, there may be a large range of gear shifts, which may affect the performance and efficiency of the motor drive, and may even cause vehicle 100 to stall or cause a safety accident.

[0064] For example, if the transmission 102 cannot shift to 3rd gear when changing gears, according to the shifting method driven by the electric motor, the vehicle 100 may directly shift from 1st gear to 5th gear, resulting in a large shift span, and the vehicle 100 may be directly stalled; or it may directly shift from 5th gear to 1st gear, and the vehicle 100 may directly stop at high speed, resulting in a rear-end collision or other safety accidents.

[0065] In step S321, when the vehicle 100 is running in electric motor mode, if a gear failure occurs, the processor 101 will switch the gear shifting sequence from skipping gears to sequential gear shifting, thereby avoiding unavailable gears and preventing large gear shifts from affecting electric drive performance, efficiency and energy consumption.

[0066] In other words, when the shift sequence of the transmission 102 is 1-3-5-7 and a fault occurs when shifting to 3, the processor 101 will change the shift sequence of the transmission 102 to sequential shifting, that is, the shift sequence becomes 1-2-4-5-6-7-8, in order to avoid the transmission 102 shifting in the order of 1-5-7, and to avoid the large gear span caused by unavailable gears in the motor mode, which would affect the electric drive performance, efficiency and energy consumption.

[0067] Please see Figure 7 In some embodiments, when the vehicle 100 is operating in electric motor mode and a transmission 102 malfunction occurs, controlling the vehicle 100 to shift gears sequentially includes:

[0068] Step S3211: When the vehicle 100 is running in electric motor mode and a transmission 102 malfunction occurs, calculate the initial target gear of the vehicle 100 based on the current gear.

[0069] Step S3212: Control the vehicle 100 to shift gears sequentially according to the initial target gear position.

[0070] In this way, the processor 101 can calculate the initial target gear based on the current gear and vehicle speed, and control the transmission 102 to switch to the initial target gear.

[0071] Specifically, when the transmission 102 of the vehicle 100 shifts gears in a skip-gear manner, if a certain gear in the transmission 102 malfunctions, the processor 101 will switch the shift logic to sequential shifting and calculate the initial target gear that can be switched to based on the vehicle speed.

[0072] Understandably, for example, if the 3rd gear of the transmission 102 malfunctions, and the vehicle 100 is currently in 1st gear and accelerating, the initial target gear will be 2nd gear, instead of shifting sequentially to 5th gear due to the 3rd gear malfunction. Similarly, if the vehicle 100 is currently in 5th gear and decelerating, the initial target gear will be 4th gear, instead of shifting sequentially to 1st gear due to the 3rd gear malfunction. This avoids situations where large gear shifts could affect the performance of the vehicle 100.

[0073] Please see Figure 8 In some implementations, controlling vehicle 100 to shift gears according to a target shift sequence includes:

[0074] Step S33: Control vehicle 100 to switch to the target gear according to the target shift sequence based on the vehicle speed.

[0075] In this way, the processor 101 can switch the gear to the appropriate target gear according to the speed of the vehicle 100, thereby improving the smoothness of the vehicle 100 when driving.

[0076] Specifically, the gear shifting logic of vehicle 100 is generally related to the speed of vehicle 100. The faster the speed of vehicle 100, the higher the gear number; the slower the speed of vehicle 100, the lower the gear number. This is so that the transmission 102 can better cooperate with the engine or electric motor to improve the fuel and electricity consumption efficiency of vehicle 100 and improve the smoothness of driving vehicle 100.

[0077] Please see Figure 9 and Figure 10 In some embodiments, controlling the vehicle 100 to switch to the target gear based on the vehicle speed includes:

[0078] Step S331: When the current speed of vehicle 100 is greater than the speed corresponding to the current gear, control vehicle 100 to shift to the target gear.

[0079] Step S332: When the current speed of vehicle 100 is less than the speed corresponding to the current gear, control vehicle 100 to downshift to the target gear.

[0080] Specifically, the gear shifting logic of vehicle 100 is closely related to the current speed of vehicle 100. For example, if vehicle 100 is in 3rd gear and the speed is 45km / h, the target gear of transmission 102 can be 4th gear in engine mode and 5th gear in electric motor mode. Processor 101 can control transmission 102 to switch to the target gear according to the current operating mode.

[0081] If the vehicle 100 is in 5th gear and the speed is 45km / h, the target gear of the transmission 102 can be 4th gear in engine mode and 3rd gear in electric motor mode. The processor 101 can control the transmission 102 to switch to the target gear according to the current operating mode.

[0082] In some embodiments, this application also provides a non-volatile computer-readable storage medium for a computer-executable program, which, when executed by one or more processors 101, causes the processors 101 to perform the gear control method of any of the above embodiments.

[0083] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), etc.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A gear control method, characterized in that, include: Obtain the vehicle's current operating mode; Select the target shift sequence according to the current operating mode; The vehicle's gear shifting is controlled according to the target gear shifting sequence; The step of controlling the vehicle's gear shifting according to the target shift sequence includes: when the vehicle is running in engine mode, controlling the vehicle to shift gears sequentially according to the gear order; when the vehicle is running in electric motor mode and the transmission is working normally, controlling the vehicle to skip gears sequentially according to the gear order; when the vehicle is running in electric motor mode and a transmission failure occurs, controlling the vehicle to switch from skipping gears to shifting gears sequentially according to the gear order; the step of controlling the vehicle to switch from skipping gears to shifting gears sequentially according to the gear order when the vehicle is running in electric motor mode and a transmission failure occurs includes: when the vehicle is running in electric motor mode and a transmission failure occurs, calculating the vehicle's initial target gear based on the current gear; controlling the vehicle to shift gears sequentially according to the gear order based on the initial target gear; the transmission failure includes a failure in a certain gear.

2. The gear control method according to claim 1, characterized in that, The step of controlling the vehicle's gear shifting according to the target gear shifting sequence includes: The vehicle is controlled to switch to the target gear according to the target shift sequence based on the vehicle speed.

3. The gear control method according to claim 2, characterized in that, The step of controlling the vehicle to switch to the target gear based on the vehicle speed includes: When the current speed of the vehicle is greater than the speed corresponding to the current gear, the vehicle is controlled to shift to the target gear. When the vehicle's current speed is less than the speed corresponding to the current gear, the vehicle's gear is controlled to be downshifted to the target gear.

4. A gear control device, characterized in that, include: The acquisition module is used to acquire the vehicle's current operating mode; The processing module is used to select the target shift sequence according to the current operating mode; The control module is used to control the vehicle's gear shifting according to the target gear shifting sequence; The step of controlling the vehicle's gear shifting according to the target shift sequence includes: when the vehicle is running in engine mode, controlling the vehicle to shift gears sequentially according to the gear order; when the vehicle is running in electric motor mode and the transmission is working normally, controlling the vehicle to skip gears sequentially according to the gear order; when the vehicle is running in electric motor mode and a transmission failure occurs, controlling the vehicle to switch from skipping gears to shifting gears sequentially according to the gear order; the step of controlling the vehicle to switch from skipping gears to shifting gears sequentially according to the gear order when the vehicle is running in electric motor mode and a transmission failure occurs includes: when the vehicle is running in electric motor mode and a transmission failure occurs, calculating the vehicle's initial target gear based on the current gear; controlling the vehicle to shift gears sequentially according to the gear order based on the initial target gear; the transmission failure includes a failure in a certain gear.

5. A vehicle, characterized in that, It includes a gearbox and a processor, the processor being used to perform the gear control method according to any one of claims 1-3.

6. A non-volatile computer-readable storage medium for a computer-executable program, characterized in that, When the computer executable program is executed by one or more processors, it implements the gear control method according to any one of claims 1-3.

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