Vehicle gear shifting control method and device, vehicle, storage medium and program product

Abstract

The invention relates to the technical field of vehicles, in particular to a vehicle gear shifting control method and device, a vehicle, a storage medium and a program product.The method comprises the steps that the motor output torque and the torque output duration of the vehicle at the current moment are obtained; according to the motor torque and the torque output duration, a target gear shifting strategy of the vehicle is determined, and the target gear shifting strategy comprises gear shifting permission, upshift forbidding and downshift requesting; and the gear shifting action of the vehicle is controlled through the target gear shifting strategy, and power output of the vehicle is guaranteed. Therefore, the problems that in the process that the motor of the vehicle continuously outputs the high torque, the over-temperature phenomenon of the motor is likely to occur, the performance of the motor is reduced or fails, and potential safety hazards occur in driving are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle gear shifting control method and device, a vehicle, a storage medium and a program product. BACKGROUND

[0002] In actual driving scenarios, such as overtaking and climbing, the driving motor can continuously and stably output driving force, which plays a crucial role in driving safety and driving performance of the vehicle.

[0003] When the vehicle is in a high-load state of accelerating overtaking or climbing, it needs to continuously output high torque to maintain the required acceleration or climbing ability. However, when the vehicle continuously outputs high torque, the motor is prone to overheat, which reduces the performance of the motor or causes the motor to fail, thereby reducing the safety of the vehicle. SUMMARY

[0004] The present application provides a vehicle gear shifting control method and device, a vehicle, a storage medium and a program product to solve the problem that in related technologies, the motor of the vehicle is prone to overheat during continuous high-torque output, which reduces the performance of the motor or causes the motor to fail, and causes driving safety hazards.

[0005] The first aspect of the present application provides a vehicle gear shifting control method, comprising the following steps: obtaining the motor output torque and torque output duration of the vehicle at the current time; determining the target gear shifting strategy of the vehicle according to the motor torque and torque output duration, wherein the target gear shifting strategy includes allowing gear shifting, prohibiting upshift and requesting downshift; and controlling the gear shifting action of the vehicle using the target gear shifting strategy.

[0006] Optionally, determining the target gear shifting strategy of the vehicle according to the motor torque and torque output duration comprises: if the torque output duration is less than an output duration threshold, the target gear shifting strategy is to allow gear shifting; and if the torque output duration is greater than or equal to the output duration threshold, determining the target gear shifting strategy according to the motor output torque of the vehicle at the current time and an output torque threshold.

[0007] Optionally, the output torque threshold includes a first torque threshold and a second torque threshold, the second torque threshold is greater than the first torque threshold, and determining the target gear shifting strategy according to the motor output torque of the vehicle at the current time and the output torque threshold comprises: if the motor output torque is less than the first torque threshold, the target gear shifting strategy is to allow gear shifting; if the motor output torque is greater than or equal to the first torque threshold and less than the second torque threshold, the target gear shifting strategy is to prohibit gear shifting; and if the motor output torque is greater than or equal to the second torque threshold, the target gear shifting strategy is to request downshift.

[0008] Optionally, before determining the target gear shifting strategy of the vehicle according to the motor torque and the torque output duration, the method further comprises: determining an output torque threshold of the motor according to motor rated parameters; during a vehicle test, controlling the motor output torque, detecting whether the temperature of the motor exceeds an over-temperature threshold of the motor, and if the temperature of the motor exceeds the over-temperature threshold, recording an over-temperature time, and obtaining test data after the vehicle test ends; analyzing the test data to obtain a continuous running duration of different motor output torques, and determining the output duration threshold of the motor according to the continuous running duration of the different motor output torques.

[0009] Optionally, before obtaining the motor torque and the torque output duration of the vehicle at the current time, the method further comprises: obtaining a torque output time of the vehicle; and calculating the torque output duration according to the current time and the torque output time.

[0010] Optionally, obtaining the torque output time of the vehicle comprises: identifying a time when an accelerator pedal of the vehicle is depressed; and determining the torque output time according to the time when the accelerator pedal is depressed.

[0011] The second aspect embodiment of the present application provides a vehicle gear shifting control device, comprising: an obtaining module configured to obtain a motor output torque and a torque output duration of a vehicle at a current time; a determining module configured to determine a target gear shifting strategy of the vehicle according to the motor torque and the torque output duration, wherein the target gear shifting strategy comprises permission to shift gears, prohibition of upshift and request for downshift; and a control module configured to control a gear shifting action of the vehicle by using the target gear shifting strategy.

[0012] The third aspect embodiment of the present application provides a vehicle, comprising: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle gear shifting control method of the first aspect.

[0013] The fourth aspect embodiment of the present application provides a computer readable storage medium, which stores a computer program executable by a processor to implement the vehicle gear shifting control method of the first aspect.

[0014] The fifth aspect embodiment of the present application provides a computer program product, wherein the computer program or instructions are executed to implement the vehicle gear shifting control method of the first aspect.

[0015] Therefore, the present application has the following beneficial effects:

[0016] The embodiment of the present application obtains the motor output torque and the torque output duration of the vehicle at the current time, determines the target gear shifting strategy of the vehicle according to the motor torque and the torque output duration, and controls the gear shifting action of the vehicle by using the target gear shifting strategy, so as to control the gear shifting of the vehicle according to the torque output duration of the motor. The torque output duration is used as the gear shifting condition, so that the gear shifting can be performed in time during the process that the motor of the vehicle continuously outputs high torque, the motor overheating phenomenon is avoided, and the performance of the motor is prevented from being degraded or invalid, and the safety and the power performance of the vehicle during the process that the vehicle continuously outputs high torque are improved. Therefore, the problem that the motor overheating phenomenon is caused, the performance of the motor is degraded or invalid, and the driving safety risk is caused during the process that the motor of the vehicle continuously outputs high torque in the related art is solved.

[0017] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be made clear to the reader by the following description and the accompanying drawings, in which:

[0019] Figure 1 A flowchart of a vehicle gear shifting control method according to an embodiment of the present application is provided.

[0020] Figure 2 A network topology diagram of an electric vehicle gear shifting control according to an embodiment of the present application is provided.

[0021] Figure 3 A work flow diagram of an electric vehicle gear shifting control according to an embodiment of the present application is provided.

[0022] Figure 4 A block diagram of a vehicle gear shifting control device according to an embodiment of the present application is provided.

[0023] Figure 5 A structural diagram of a vehicle according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below are exemplary, and are intended to explain the present application, and cannot be understood as limiting the present application.

[0025] A vehicle gear shifting control method, device, vehicle, storage medium and program product are described below with reference to the accompanying drawings. In view of the problem of great safety hazards to vehicle driving safety caused by the reduction or even zero of the maximum output torque of the driving motor during vehicle acceleration and climbing long slopes, a vehicle gear shifting control method is provided in the present application. In the method, the motor output torque and the torque output duration of the vehicle at the current time are obtained, the target gear shifting strategy of the vehicle is determined according to the motor torque and the torque output duration, and the gear shifting action of the vehicle is controlled by using the target gear shifting strategy to ensure the power output of the vehicle. Thus, the problem of over-temperature of the motor, performance degradation or failure of the motor and driving safety hazards caused by the continuous high torque output of the motor in the related art are solved.

[0026] Specifically, Figure 1 A flowchart of a vehicle gear shifting control method provided by an embodiment of the present application is shown in FIG. 1.

[0027] As Figure 1 shown, the vehicle gear shifting control method includes the following steps:

[0028] In step S101, the motor output torque and the torque output duration of the vehicle at the current time are obtained.

[0029] The motor output torque refers to the torque size actually generated by the driving motor to push the vehicle forward or backward during vehicle driving. The determination of the torque output duration will be described in detail below and will not be described here again.

[0030] It can be understood that in the current time, the vehicle system detects and records the motor output torque and the torque output duration which has been continuously output. These data are crucial for evaluating the current running state of the vehicle and adjusting the gear shifting strategy to ensure the safety and efficiency of driving.

[0031] In the embodiment of the present application, before obtaining the motor torque and the torque output duration of the vehicle at the current time, the following steps are further included: obtaining the torque output time of the vehicle; and calculating the torque output duration according to the current time and the torque output time.

[0032] It can be understood that in order to obtain the motor torque and the torque output duration of the vehicle at the current time, the time point at which the motor starts to output a specific torque, i.e., the torque output time, needs to be recorded first. By comparing the current time with the previously recorded torque output time, the duration of continuously outputting the torque, i.e., the torque output duration, is calculated.

[0033] In the embodiment of the present application, obtaining the torque output time of the vehicle includes: identifying the time when the accelerator pedal of the vehicle is depressed; and determining the torque output time according to the time when the accelerator pedal is depressed.

[0034] It can be understood that the torque output time refers to the time point at which the motor actually outputs torque according to the operation of the accelerator pedal. After the torque output time is determined, the length of time during which the motor continuously outputs torque from the time point will be calculated until the motor torque output range changes, the torque output time length is obtained, and the time at which the motor torque output range changes is regarded as a new torque output time, the timing is restarted, and the detection of the torque output time length is continuously performed until the motor stops outputting torque. The motor torque output range is determined by the output torque threshold of the motor, which will be described in detail below and will not be described again here. In this way, the duration of the continuous output of the motor output torque can be dynamically monitored, and the vehicle can maintain good performance and avoid overheating of the motor under various driving conditions.

[0035] In step S102, the target shift strategy of the vehicle is determined according to the motor torque and the torque output time length, wherein the target shift strategy includes allowing shifting, prohibiting upshifting, and requesting downshifting.

[0036] The prohibiting upshifting includes maintaining the current gear or downshifting.

[0037] It can be understood that the embodiments of the present application determine the optimal target shift strategy according to the current output torque of the motor and the torque output time length, and the target shift strategy includes allowing shifting, prohibiting upshifting, and requesting downshifting. When the conditions are suitable, the shifting operation is allowed, when it is necessary to maintain the current gear or perform downshifting operation to avoid overload, the prohibiting upshifting is adopted, and when it is necessary to reduce the burden of the motor and prevent overheating, the downshifting is requested. For example, if the motor output torque is large and the torque output time length is long, which is close to the safety working limit, the prohibiting upshifting or even the requesting downshifting is suggested to ensure the safety and stability of the vehicle. On the contrary, if the motor output torque is small and the torque output time length is short, the shifting may be allowed to optimize the power performance and driving experience of the vehicle. The purpose is to ensure that the electric vehicle can operate efficiently and stably under different driving conditions and avoid overheating of the motor.

[0038] In the embodiments of the present application, the target shift strategy of the vehicle is determined according to the motor torque and the torque output time length, including: if the torque output time length is less than the output time length threshold, the target shift strategy is to allow shifting; and if the torque output time length is greater than or equal to the output time length threshold, the target shift strategy is determined according to the motor output torque of the vehicle at the current time and the output torque threshold.

[0039] The output time length threshold is the maximum running time length under different motor output torques, and exceeding the output time length threshold will cause the motor to overheat. The determination method of the output time length threshold will be described in detail below and will not be described again here.

[0040] It can be understood that, by comparing the output duration threshold with the torque output duration, the embodiments of the present application preliminarily determine the target gear shifting strategy of the vehicle. When the torque output duration is less than the output duration threshold, it is considered that the motor is in a safe working range, and the target gear shifting strategy at this time is to allow gear shifting. When the torque output duration is greater than or equal to the duration threshold, the actual output torque of the motor at the current time needs to be further analyzed, and the specific target gear shifting strategy is determined according to the relationship between the motor output torque and the output torque threshold, as follows:

[0041] In the embodiments of the present application, the output torque threshold includes a first torque threshold and a second torque threshold, the second torque threshold is greater than the first torque threshold, and the target gear shifting strategy is determined according to the motor output torque at the current time and the output torque threshold, including: if the motor output torque is less than the first torque threshold, the target gear shifting strategy is to allow gear shifting; if the motor output torque is greater than or equal to the first torque threshold and less than the second torque threshold, the target gear shifting strategy is to prohibit gear shifting; and if the motor output torque is greater than or equal to the second torque threshold, the target gear shifting strategy is to request downshift.

[0042] The first torque threshold and the second torque threshold are respectively the critical values of the output torque threshold interval, and the motor output torque is divided into three intervals by the first torque threshold and the second torque threshold, i.e., the motor output torque is less than the first torque threshold, the motor output torque is greater than or equal to the first torque threshold and less than the second torque threshold, and the motor output torque is greater than or equal to the second torque threshold.

[0043] It should be noted that, in the foregoing calculation of the torque output duration, the time when the motor torque output range changes is regarded as a new torque output time, where the motor torque output range changes, i.e., the output torque of the motor changes between the three intervals divided by the first torque threshold and the second torque threshold. For example, starting from the time when the accelerator is depressed, the motor output torque is less than the first torque threshold, at a certain time, the motor output torque increases and is greater than the first torque threshold and less than the second torque threshold, the motor torque output range changes, the torque output duration is the time from the time when the accelerator is depressed to the time when the motor torque output range changes, and the time when the torque range changes is regarded as a new torque output time.

[0044] It can be understood that, in order to determine the target gear shifting strategy of the electric vehicle, after the output duration threshold and the output torque threshold of the vehicle are obtained, if the torque output duration is greater than or equal to the output duration threshold, the motor output torque and the output torque threshold of the vehicle at the current time need to be further determined, specifically, if the motor output torque is less than the first torque threshold, it means that the motor load is low, at this time, the target gear shifting strategy is to allow gear shifting; if the motor output torque is greater than or equal to the first torque threshold and less than the second torque threshold, it means that the motor is under certain load, at this time, the target gear shifting strategy should be to prohibit upshift to maintain sufficient driving force; and when the motor output torque is greater than or equal to the second torque threshold, it means that the motor may approach or reach its maximum load, and there is a risk of overheating, so the target gear shifting strategy should be to request downshift to reduce the load of the motor, in this way, under different driving conditions, the vehicle performance can be optimized and the motor can be protected from overheating.

[0045] In the embodiment of the application, before the target gear shifting strategy of the vehicle is determined according to the motor torque and the torque output duration, the method further comprises: determining the output torque threshold of the motor according to the motor rated parameters; in the vehicle test process, the motor output torque is controlled, whether the temperature of the motor exceeds the over-temperature threshold of the motor is detected, if the temperature of the motor exceeds the over-temperature threshold, the over-temperature time is recorded, and the test data is obtained after the vehicle test is completed; the continuous running duration of different motor output torques is obtained by analyzing the test data, and the output duration threshold of the motor is determined according to the continuous running duration of different motor output torques.

[0046] The motor rated parameters refer to the technical specifications followed in the design of the motor, such as maximum power, maximum torque, etc.; the over-temperature threshold is a safe upper limit value of the motor temperature, exceeding this value may cause the performance of the motor to decline or be damaged; the continuous running duration refers to the running duration that the motor can continuously work normally under the premise that the temperature of the motor does not exceed the over-temperature threshold; the motor output torque is maintained within the target range, and the target range is a reasonable interval that can guarantee the performance requirements of the vehicle and will not cause the motor to overheat, which is specifically set according to actual requirements and is not limited herein.

[0047] It can be understood that the output duration threshold and the output torque threshold of the vehicle need to be obtained through calibration experiments before the output duration threshold and the output torque threshold of the vehicle in the embodiments of the present application, wherein the output torque threshold of the motor is determined according to the rated parameters of the motor, and the output duration threshold of the motor is determined through calibration experiments. In the process of calibration experiments, the motor outputs a torque of a specific size, and it is tested whether the temperature of the motor exceeds the over-temperature threshold. If the temperature of the motor exceeds the over-temperature threshold, the duration of the over-temperature state is recorded. The motor outputs different torques to repeat the above experiments, and the collected data are analyzed to determine the duration of continuous operation of the motor under different output torques. The minimum value of the obtained duration of continuous operation is selected as a reference duration of continuous operation, and the output duration threshold is determined according to the reference duration of continuous operation. The duration threshold is less than or equal to the reference duration of continuous operation, so that the temperature of the motor does not exceed the over-temperature threshold when the torque output duration is less than the output duration threshold.

[0048] For example, when the output duration threshold of the motor is determined according to the duration of continuous operation of the motor under different output torques, the embodiments of the present application can obtain the maximum duration of continuous operation of the motor under different output torques. The minimum value of the maximum duration of continuous operation corresponding to a plurality of output torques is selected as a reference duration of continuous operation, and the output duration threshold is determined according to the reference duration of continuous operation. The output duration threshold is less than or equal to the reference duration of continuous operation. Since the maximum duration of continuous operation refers to the critical duration of the motor under the corresponding output torque, the duration threshold is set by the critical duration. It can not only comprehensively consider the time limit of the output torque allowed by the vehicle, that is, allow the vehicle to provide more power, but also ensure that the temperature of the motor does not exceed the over-temperature threshold of the motor, so as to balance the power performance and safety of the vehicle and avoid overheating.

[0049] It should be noted that the output torque threshold of the motor is determined according to the rated parameters of the motor, and also needs to be verified through calibration experiments. If it is found through verification that the output torque threshold of the motor has an error, the output torque threshold is corrected according to the results of the calibration experiments.

[0050] In step S103, the target gear shifting strategy is used to control the gear shifting action of the vehicle.

[0051] It can be understood that the embodiments of the present application execute the gear shifting operation of the vehicle based on the target gear shifting strategy determined in the above steps, that is, the action of the vehicle transmission is guided according to the formulated strategy of allowing gear shifting, prohibiting upshift or requesting downshift, so as to ensure that the vehicle performance is optimized while protecting the motor from overheating due to overload, accurately control the gear shifting time, and achieve the purpose of improving driving safety and efficiency.

[0052] The vehicle gear shifting control method provided in the embodiment of the present application obtains the motor output torque and the torque output duration of the vehicle at the current time, determines the target gear shifting strategy of the vehicle according to the motor torque and the torque output duration, and controls the gear shifting action of the vehicle by using the target gear shifting strategy, so as to control the gear shifting of the vehicle according to the torque output duration of the motor. The torque output duration is used as the gear shifting condition, so that the gear shifting can be performed in time during the process that the motor of the vehicle continuously outputs high torque, the motor over-temperature phenomenon is avoided, and the performance degradation or failure of the motor is avoided, thereby improving the safety and power performance of the vehicle when continuously outputting high torque.

[0053] The vehicle gear shifting control method is further described below by means of a specific embodiment.

[0054] The vehicle gear shifting is that when the drive motor speed of the vehicle reaches a certain speed during the driving process, the TCU (Transmission Control Unit) requests gear shifting; the VCU (Vehicle Control Unit) analyzes the current state of the vehicle according to the current motor torque and torque output time, judges whether the vehicle is allowed to upshift or request downshift, and sends a signal to the TCU, and the TCU controls the MCU (Motor Control Unit) to perform gear shifting according to the motor speed, the accelerator pedal opening degree and the VCU instruction, Figure 2 The figure is a network topology diagram of the electric vehicle gear shifting control, wherein the ECAN (Enhanced Controller Area Network) is a communication protocol for transmitting information between ECUs (Electronic Control Units) in the vehicle, and the 500 Kbps represents the communication rate.

[0055] Figure 3 The figure is the working flow chart of the electric vehicle gear shifting control provided in the embodiment, which judges whether the vehicle is allowed to gear shift by the size of the drive motor output torque and the torque output time of the vehicle during the driving process, such as Figure 3 The method specifically includes the following steps:

[0056] In step S201, it is judged whether the torque output duration t is less than the output duration threshold t1.

[0057] When the torque output duration t is less than the output duration threshold t1, the VCU allows the TCU to perform gear shifting control. When the torque output duration t is greater than or equal to the output duration threshold t1, step S202 is performed to further analyze the actual output torque of the motor of the vehicle at the current time, and it is judged whether the gear shifting is allowed.

[0058] Step S202, judging whether the motor output torque T is less than a first torque threshold T1 in the motor torque threshold.

[0059] When the motor output torque T is less than the first torque threshold T1, the VCU allows the TCU to perform the gear shifting control; when the motor output torque T is greater than or equal to the motor torque threshold T1, step S203 is performed.

[0060] Step S203, judging whether the motor output torque T is less than a second torque threshold T2 in the motor torque threshold.

[0061] When the motor output torque T is less than or equal to the motor torque threshold T2, the VCU prohibits the TCU to perform the gear shifting control; when the motor output torque T is greater than the motor torque threshold T2, the VCU requests the TCU to perform the gear shifting control.

[0062] The sizes of the motor output torque thresholds T1 and T2 and the output duration threshold t1 are determined through vehicle calibration, combined with the driving scenarios of the vehicle, according to the vehicle power performance and the temperature rise of the motor.

[0063] Next, a vehicle gear shifting control device according to an embodiment of the present application is described with reference to the accompanying drawings.

[0064] Figure 4 is a block schematic diagram of the vehicle gear shifting control device according to the embodiment of the present application.

[0065] As shown in Figure 4 , the vehicle gear shifting control device 10 includes an acquisition module 301, a determination module 302 and a control module 303.

[0066] The acquisition module 301 is configured to acquire the motor output torque and the torque output duration of the vehicle at the current time; the determination module 302 is configured to determine a target gear shifting strategy of the vehicle according to the motor output torque and the torque output duration, wherein the target gear shifting strategy includes allowing gear shifting, prohibiting upshift and requesting downshift; and the control module 303 is configured to control the gear shifting action of the vehicle by using the target gear shifting strategy.

[0067] In the embodiment of the present application, the determination module 302 is further configured to: if the torque output duration is less than the output duration threshold, the target gear shifting strategy is to allow gear shifting; and if the torque output duration is greater than or equal to the output duration threshold, the target gear shifting strategy is determined according to the motor output torque of the vehicle at the current time and the output torque threshold.

[0068] In the embodiment of the present application, the determining module 302 is further configured to: if the motor output torque is less than a first torque threshold, the target gear shifting strategy is to allow gear shifting; if the motor output torque is greater than or equal to the first torque threshold and less than a second torque threshold, the target gear shifting strategy is to prohibit gear shifting; and if the motor output torque is greater than or equal to the second torque threshold, the target gear shifting strategy is to request downshift.

[0069] In the embodiment of the present application, the calibration module is further configured to: before determining the target gear shifting strategy of the vehicle according to the motor torque and the torque output duration, determine the output torque threshold of the motor according to the motor rated parameters; during the vehicle test, control the motor output torque, detect whether the temperature of the motor exceeds the over-temperature threshold of the motor, and if the temperature of the motor exceeds the over-temperature threshold, record the over-temperature time, and obtain the test data after the vehicle test is completed; analyze the test data to obtain the continuous running duration of different motor output torques, and determine the output duration threshold of the motor according to the continuous running duration of different motor output torques.

[0070] In the embodiment of the present application, the calculating module is further configured to: before obtaining the motor torque of the vehicle at the current time and the torque output duration, obtain the torque output time of the vehicle; and calculate the torque output duration according to the current time and the torque output time.

[0071] In the embodiment of the present application, obtaining the torque output time of the vehicle comprises: identifying the time when the accelerator pedal of the vehicle is depressed; and determining the torque output time according to the time when the accelerator pedal is depressed.

[0072] It should be noted that the foregoing explanation and description of the vehicle gear shifting control method also apply to the vehicle gear shifting control device of this embodiment, which will not be described here again.

[0073] The vehicle gear shifting control device according to the embodiment of the present application obtains the motor output torque of the vehicle at the current time and the torque output duration, determines the target gear shifting strategy of the vehicle according to the motor torque and the torque output duration, and controls the gear shifting action of the vehicle by using the target gear shifting strategy, so as to control the gear shifting of the vehicle according to the torque output duration of the motor. The torque output duration is used as the gear shifting condition, so that the gear can be shifted in time during the process that the motor of the vehicle continuously outputs high torque, the over-temperature phenomenon of the motor is avoided, and the performance of the motor is prevented from being degraded or invalid, thereby improving the safety and power performance of the vehicle when continuously outputting high torque.

[0074] Figure 5 The vehicle according to the embodiment of the present application is provided with a structure diagram. The vehicle can comprise:

[0075] The memory 401, the processor 402, and the computer program stored in the memory 401 and executable on the processor 402.

[0076] The processor 402 implements the vehicle gear shifting control method provided in the above embodiments when executing a program.

[0077] Further, the vehicle further comprises:

[0078] The communication interface 403 is configured to communicate between the memory 401 and the processor 402.

[0079] The memory 401 is configured to store a computer program capable of being executed on the processor 402.

[0080] The memory 401 can include a high-speed RAM (Random Access Memory) memory, and can also include a nonvolatile memory, for example, at least one disk memory.

[0081] If the memory 401, the processor 402 and the communication interface 403 are implemented independently, the communication interface 403, the memory 401 and the processor 402 can be connected through a bus and complete communication between each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 5 In the figure, only one thick line is used to represent the bus, but it does not mean that there is only one bus or only one type of bus.

[0082] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can complete communication between each other through an internal interface.

[0083] The processor 402 can be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0084] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the vehicle gear shifting control method as above.

[0085] The embodiment of the present application further provides a computer program product comprising a computer program or instructions, which, when executed, implement the vehicle gear shifting control method as above.

[0086] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or N embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0087] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0088] Any process or method descriptions in flow charts or described elsewhere herein can be understood as representing one or N executable instructions, code segments, or portions of code that include the steps for implementing the custom logic function or process, and the scope of the preferred embodiments of the present application includes additional implementation involving other steps, in which the order of the steps can be different, including substantially simultaneous or reverse order, as will be appreciated by those skilled in the art, depending upon the functionality involved.

[0089] It should be understood that parts of the present application can be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. As in another embodiment implemented in hardware, any one or a combination of the following technologies known in the art can be used: discrete logic circuit with logic gate circuit for implementing logic functions on data signals, application specific integrated circuit with suitable combination logic gate circuit, programmable gate array, field programmable gate array, etc.

[0090] Those skilled in the art can understand that all or part of the steps of the method for implementing the above-mentioned embodiments can be instructed by a program to complete the relevant hardware, and the above-mentioned program can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0091] Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A vehicle shift control method, characterized in that: The following steps are involved: Get the current vehicle's motor output torque and torque output duration; determining a target shift strategy for the vehicle according to the motor torque and the torque output duration, wherein the target shift strategy includes allowing shifting, prohibiting upshifting, and requesting downshifting; The target shift strategy is used to control the shifting action of the vehicle.

2. The vehicle shift control method according to claim 1, characterized in that: The determining of the target shift strategy of the vehicle according to the motor torque and the torque output duration includes: If the torque output duration is less than the output duration threshold, the target shift strategy is to allow shifting; If the torque output duration is greater than or equal to the output duration threshold, the target shift strategy is determined according to the motor output torque of the vehicle at the current moment and the output torque threshold.

3. The vehicle shift control method according to claim 2, characterized in that: The output torque threshold includes a first torque threshold and a second torque threshold, the second torque threshold is greater than the first torque threshold, and determining the target shift strategy according to the motor output torque and the output torque threshold of the vehicle at a current moment includes: If the motor output torque is less than the first torque threshold, the target shift strategy is to allow shifting; If the motor output torque is greater than or equal to the first torque threshold and less than the second torque threshold, the target shift strategy is to prohibit shifting; If the motor output torque is greater than or equal to the second torque threshold, the target shift strategy is to request a downshift.

4. The vehicle shift control method according to claim 2, characterized in that: Before determining the target shift strategy of the vehicle according to the motor torque and the torque output duration, the method further includes: Determine the output torque threshold of the motor according to the rated parameters of the motor; During the vehicle test, the motor output torque is controlled to detect whether the motor temperature exceeds the motor over-temperature threshold. If the motor temperature exceeds the over-temperature threshold, the over-temperature time is recorded, and test data is obtained after the vehicle test is completed. The test data is analyzed to obtain continuous operation durations of different motor output torques, and an output duration threshold of the motor is determined according to the continuous operation durations of the different motor output torques.

5. The vehicle shift control method according to claim 1, characterized in that: Before obtaining the current vehicle's motor torque and torque output duration, the following steps are also required: Obtaining a torque output moment of the vehicle; The torque output duration is calculated according to the current time and the torque output time.

6. The vehicle shift control method according to claim 5, characterized in that: The obtaining of the torque output moment of the vehicle includes: Identifying the moment when the accelerator pedal of the vehicle is depressed; The torque output timing is determined according to the timing when the accelerator pedal is depressed.

7. A vehicle shift control device, characterized in that: include: The acquisition module is used to obtain the current vehicle's motor output torque and torque output duration; a determination module, configured to determine a target shift strategy of the vehicle according to the motor torque and the torque output duration, wherein the target shift strategy includes allowing shifting, prohibiting upshifting, and requesting downshifting; A control module is used to control the gear shifting action of the vehicle using the target gear shifting strategy.

8. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle shift control method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed, the vehicle shift control method according to any one of claims 1 to 6 is implemented.

10. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed, the vehicle shift control method according to any one of claims 1 to 6 is implemented.

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