Electric drive system upshift control method and system
By acquiring the actual power of the motor and the vehicle acceleration, the acceleration threshold is determined, and the electric drive system is controlled to shift up. This solves the problem of vehicle speed drop and frequent shifting caused by insufficient driving capability after the electric drive system shifts up, and achieves stable vehicle speed increase.
Patent Information
- Application Number
- CN202510880166.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-11-07
AI Technical Summary
Existing electric drive systems do not take into account the vehicle's driving capability when controlling upshifts, leading to frequent gear shifts due to decreased vehicle speed.
By acquiring the actual power of the motor, vehicle acceleration, and throttle opening, the acceleration threshold is determined, and the upshifting of the electric drive system is suppressed or controlled to ensure that the motor power is less than the maximum output power within a set time period, thus preventing the vehicle speed from dropping due to insufficient driving capability.
It effectively prevents speed loss and frequent gear shifting caused by insufficient driving force, ensuring that the vehicle has enough driving force to support speed increase after upshifting.
Smart Images
Figure CN120902548A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of motor driving, and particularly relates to a gear-up control method and system for an electric drive system. BACKGROUND
[0002] When the vehicle is running, the electric drive system can be used to adjust the vehicle speed to meet the running demand. The output shaft of the electric drive system of the vehicle is connected with the wheel end of the vehicle, and the driving force provided by the electric drive system is output to the wheel end, thereby driving the vehicle to run.
[0003] The electric drive system comprises multiple gears, and the torque output to the wheel end by the electric drive system is different under different gears to meet different vehicle speed demands.
[0004] When the current electric drive system of the vehicle performs gear-up control, only the vehicle speed is considered, and the driving capability of the vehicle is not considered; and the problem of frequent gear shifting caused by the insufficient driving capability after the electric drive system is gear-up is prone to occur. SUMMARY
[0005] Therefore, the present application provides a gear-up control method and system for an electric drive system to prevent the problem of frequent gear shifting caused by the insufficient driving capability after the vehicle is gear-up.
[0006] To achieve the above object, the present application provides the following technical scheme: The first aspect of the present application provides a gear-up control method for an electric drive system, comprising: When the vehicle speed reaches the gear-up speed, the actual motor power, the vehicle acceleration and the accelerator opening degree are obtained; According to the vehicle acceleration, the acceleration change rate of the vehicle is determined; According to the acceleration change rate of the vehicle and the accelerator opening degree, the acceleration threshold of the vehicle is determined; When the actual motor power is greater than or equal to the set power threshold, and the vehicle acceleration is less than the set acceleration threshold, the electric drive system is inhibited from gear-up; When the actual motor power is greater than or equal to the set power threshold, and the vehicle acceleration is greater than or equal to the set acceleration threshold, the electric drive system is controlled to gear-up, and after the electric drive system is gear-up, the motor power is continuously less than the maximum allowed output power of the motor within a set time period.
[0007] Optionally, when the actual motor power is less than the set power threshold, the electric drive system is controlled to gear-up.
[0008] Optionally, the set power threshold is determined according to the maximum allowed output power of the motor.
[0009] Optionally, under the corresponding accelerator opening degree and acceleration change rate, when the vehicle power is greater than or equal to the set power threshold, the vehicle is gear-up according to various accelerations. acquiring a time duration that the motor power is less than the maximum output power of the motor after each acceleration upshift; selecting an acceleration corresponding to a time duration that the motor power is less than the maximum output power of the motor greater than or equal to a set time period, and selecting a minimum value from the selected accelerations as the acceleration threshold.
[0010] Optionally, the process of determining the acceleration threshold corresponding to each acceleration rate of change and accelerator opening of the vehicle comprises: setting an initial preset value of the acceleration corresponding to the accelerator opening and the acceleration rate of change; when the vehicle reaches the upshift speed at the accelerator opening and the acceleration rate of change, and the motor power is greater than or equal to the set power threshold and the acceleration is greater than or equal to the initial preset value of the acceleration, controlling the electric drive system to upshift, acquiring a time duration that the motor power is less than the maximum output power of the motor after upshifting; when the time duration that the motor power is less than the maximum output power of the motor is not equal to the set time period, correcting the initial preset value of the acceleration by a correction coefficient to obtain a corrected acceleration; recontrolling the electric drive system to upshift according to the corrected acceleration until the time duration that the motor power is less than the maximum output power of the motor after the electric drive system upshifts controlled by the corrected acceleration is greater than or equal to the set time period, and the deviation between the time duration that the motor power is less than the maximum output power of the motor and the set time period is minimum, and taking the corrected acceleration as the acceleration threshold corresponding to the accelerator opening and the acceleration rate of change.
[0011] Optionally, when the time duration that the motor power is less than the maximum output power of the motor is greater than the set time period, the correction coefficient is less than 1; when the time duration that the motor power is less than the maximum output power of the motor is less than the set time period, the correction coefficient is greater than 1.
[0012] The second aspect of the present application provides an electric drive system upshift control system, comprising: a data acquisition unit configured to acquire the actual motor power, the vehicle acceleration and the accelerator opening when the vehicle speed reaches the upshift speed; an acceleration rate of change determination unit configured to determine the acceleration rate of change of the vehicle according to the vehicle acceleration; an acceleration threshold determination unit configured to determine the acceleration threshold of the vehicle according to the acceleration rate of change of the vehicle and the accelerator opening; The vehicle gear control unit is used to inhibit the electric drive system to shift up when the actual motor power is greater than or equal to the set power threshold value and the vehicle acceleration is less than the set acceleration threshold value; control the electric drive system to shift up when the actual motor power is greater than or equal to the set power threshold value and the vehicle acceleration is greater than or equal to the set acceleration threshold value, and after the electric drive system shifts up, the motor power is continuously less than the maximum output power allowed by the motor within a set time period.
[0013] The third aspect of the present application provides a computer device, the device comprising: a processor adapted to execute a computer program; a computer readable storage medium, the computer readable storage medium storing a computer program, the computer program being executed by the processor to implement the electric drive system upshift control method provided in the first aspect.
[0014] The fourth aspect of the present application provides a computer readable storage medium, the computer readable storage medium storing a computer program, the computer program being adapted to be loaded and executed by the processor to implement the electric drive system upshift control method provided in the first aspect.
[0015] The fifth aspect of the present application provides a computer program product, the computer program product comprising a computer program, the computer program being executed by the processor to implement the electric drive system upshift control method provided in the first aspect.
[0016] Compared with the prior art, the present application has the following advantages: The electric drive system upshift control method and system provided by the present application increase the judgment of the actual motor power, the vehicle acceleration and the acceleration threshold value after the vehicle speed reaches the upshift speed. When the actual motor power is greater than or equal to the set power threshold value, it indicates that the actual torque of the motor is close to the motor external characteristic. In this case, when the vehicle acceleration is greater than or equal to the set acceleration threshold value, the electric drive system is controlled to shift up, and after the electric drive system shifts up, the motor power is continuously less than the maximum output power allowed by the motor within a set time period, which ensures sufficient driving force to control the vehicle acceleration, so that the vehicle speed does not decrease after shifting up, and the vehicle does not downshift. In this case, if the vehicle is controlled to shift up when the vehicle acceleration is less than the set acceleration threshold value, the vehicle power will reach the maximum output power allowed by the motor in a short time, which will cause the vehicle speed to decrease due to insufficient driving force, and the vehicle will downshift. Therefore, the present application inhibits the vehicle to shift up when the actual motor power is greater than or equal to the set power threshold value and the vehicle acceleration is less than the set acceleration threshold value, which prevents the problem of frequent gear shifting caused by insufficient driving force after the electric drive system shifts up.
[0017] Advantages of the additional aspects of the application will become apparent in the following description. BRIEF DESCRIPTION OF DRAWINGS
[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an implementation of the application and, together with the description, serve to explain the application.
[0019] Figure 1 A flow chart of a gear up control method of an electric drive system according to an embodiment of the application is shown in the figure. Figure 2 A motor operating external characteristic and working condition point distribution according to an embodiment of the application is shown in the figure. DETAILED DESCRIPTION
[0020] The application will be further described below with reference to the drawings and embodiments.
[0021] It should be noted that the following detailed description is exemplary in nature and is intended to provide optional explanations of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0022] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.
[0023] Embodiment 1 As Figure 2 The figure shows a motor operating external characteristic and working point distribution of a vehicle drive motor. In actual vehicle driving process, it is assumed that the working condition points before gear up of the electric drive system are A1 and A2 respectively, and the working condition points after gear up are B1 and B2 respectively. It can be seen that the motor torque corresponding to B1 point has exceeded the motor external characteristic torque, so the motor can only work at B1' point. At this time, the drive power of the motor is reduced, and the driving ability is insufficient to further improve the vehicle speed, which may result in the need to reduce the gear to reduce the vehicle speed. Therefore, it is not recommended to gear up when working at A1 point. If the working condition point before gear up of the electric drive system is at A2 point, the gear up will make the working condition point fall to B2 point. At this time, the motor still has a large backup power, which can ensure the further improvement of the vehicle speed, and the gear down is not needed in a short time after the gear up.
[0024] The current motor of the electric drive system is close to the maximum output power allowed by the motor, that is, the working condition point is near the rated speed or the speed is larger, and the actual torque is close to the external characteristic of the motor. When the vehicle is accelerating at full throttle, the driver is always operating at full throttle, and the driving motor is always working at the external characteristic torque. At this time, if the upshift is not allowed, the vehicle will not reach the maximum speed, which does not meet the driver's demand. Therefore, in order to meet the driver's demand as much as possible and prevent the problem of frequent gear shifting caused by insufficient driving ability after upshift, an electric drive system upshift control method is proposed. When the current gear is about to exceed the motor speed, if the driver still has an acceleration demand, the upshift must be forced at this time. If the current motor power is close to its external characteristic, the upshift point is the constant power area (after the rated speed) after the upshift. Similarly, if the motor power is small, the upshift point is the constant torque area corresponding to the current power after the rated speed, which ensures that the driving power will not decrease after upshift. Prevent downshift due to insufficient power in a short time after upshift. The acceleration and motor power when the vehicle reaches the shift point are used to decide whether to allow upshift, as shown in FIG. 8. The acceleration threshold is related to the current vehicle speed, and the larger the vehicle speed, the smaller the acceleration threshold. Figure 1
[0025] Specifically, the electric drive system upshift control method disclosed in the embodiment comprises: When the vehicle speed reaches the upshift speed, the actual motor power, vehicle acceleration and throttle opening are obtained; According to the vehicle acceleration, the acceleration change rate of the vehicle is determined; According to the acceleration change rate of the vehicle and the throttle opening, the acceleration threshold of the vehicle is determined; When the actual motor power is greater than or equal to the set power threshold, and the vehicle acceleration is less than the set acceleration threshold, the electric drive system upshift is inhibited; When the actual motor power is greater than or equal to the set power threshold, and the vehicle acceleration is greater than or equal to the set acceleration threshold, the electric drive system upshift is controlled, and the motor power is less than the maximum output power allowed by the motor for a set period of time after the electric drive system upshift 。
[0026] When the actual motor power is less than the set power threshold, the electric drive system upshift is controlled.
[0027] By limiting the acceleration threshold, it is ensured that the vehicle will not have insufficient power and cause downshift in a short time after upshift when the actual motor power reaches the set power threshold.
[0028] For the case that the actual power of the motor is less than the set power threshold, the power of the vehicle will not reach the maximum output power of the motor after the gear of the electric drive system is controlled to be shifted up, the vehicle has a large backup power, and the further speed-up of the vehicle can be ensured, and the vehicle will not be shifted down in a short time. Therefore, in this case, the gear of the electric drive system can be directly controlled to be shifted up, and the acceleration does not need to be considered.
[0029] The set power threshold in the embodiment is determined according to the maximum output power allowed by the motor.
[0030] The set power threshold is a value close to the maximum output power allowed by the motor. When the vehicle is shifted up under the condition that the power is less than the set power threshold, the vehicle has sufficient power to ensure the further speed-up of the vehicle, and the vehicle will not be shifted down in a short time. The set power threshold can be obtained through vehicle calibration.
[0031] The acceleration threshold in the embodiment is related to the acceleration change rate of the vehicle and the accelerator opening degree. The greater the acceleration change rate and the accelerator opening degree, the greater the acceleration threshold. When the acceleration increases at a relatively gentle rate and the accelerator opening degree is low or the accelerator change rate is small, it is considered that the driver has an acceleration demand, but the demand is not urgent, and the acceleration threshold is small, that is, the shifting condition is allowed. Similarly, when the acceleration changes rapidly and the accelerator change rate is large or the accelerator opening degree is large, it is considered that the driver's acceleration demand is urgent, and the acceleration threshold is set to be large to prohibit shifting as much as possible.
[0032] The acceleration change rate is equal to the error between the current acceleration of the vehicle and the acceleration of the vehicle at the last moment divided by the acceleration of the vehicle at the last moment.
[0033] The embodiment determines the acceleration threshold corresponding to various accelerator opening degrees and acceleration change rates of the vehicle in advance, and forms a mapping relationship. In the actual shifting up control process of the vehicle, the acceleration threshold corresponding to the vehicle is directly determined according to the acceleration change rate and the accelerator opening degree of the vehicle.
[0034] The acceleration threshold corresponding to various accelerator opening degrees and acceleration change rates of the vehicle is obtained through the calibration of the vehicle in advance. When the acceleration threshold of the vehicle is calibrated, the vehicle is controlled to be shifted up at various accelerations when the power of the vehicle is greater than or equal to the set power threshold under the corresponding accelerator opening degree and acceleration change rate. The time during which the motor power is less than the maximum output power allowed by the motor after the vehicle is shifted up at each acceleration is obtained. The acceleration corresponding to the time during which the motor power is less than the maximum output power allowed by the motor is greater than or equal to the set time period is selected, and the minimum value is selected from the selected accelerations as the acceleration threshold.
[0035] The process of determining the acceleration threshold corresponding to each acceleration change rate and accelerator opening degree of the vehicle includes: Set the acceleration initial preset value corresponding to the accelerator opening degree and the acceleration change rate; When the vehicle reaches the upshift speed under the accelerator opening degree and the acceleration change rate, and the motor power is greater than or equal to the set power threshold, and the acceleration is greater than or equal to the acceleration initial preset value, control the electric drive system to upshift, and obtain the time when the motor power is less than the maximum allowed output power of the motor after upshifting; When the time when the motor power is less than the maximum allowed output power of the motor is not equal to the set time period, correct the acceleration initial preset value by a correction coefficient to obtain a corrected acceleration; Recontrol the electric drive system to upshift according to the corrected acceleration until the time when the motor power is less than the maximum allowed output power of the motor is greater than or equal to the set time period and the deviation between the time when the motor power is less than the maximum allowed output power of the motor and the set time period is minimum after the electric drive system is controlled to upshift by the corrected acceleration, and take the corrected acceleration as the acceleration threshold corresponding to the accelerator opening degree and the acceleration change rate.
[0036] When the time when the motor power is less than the maximum allowed output power of the motor is greater than the set time period, the correction coefficient is less than 1; When the time when the motor power is less than the maximum allowed output power of the motor is less than the set time period, the correction coefficient is greater than 1.
[0037] In the vehicle calibration process, the embodiments of the application determine the acceleration threshold corresponding to each accelerator opening degree and acceleration change rate in an optimization manner, and the specific process includes: First, set an acceleration initial preset value for a certain accelerator opening degree and acceleration change rate, denoted as a set , and set a setCorresponding value is a1, during the vehicle operation, when the vehicle runs at the throttle opening and the acceleration rate, and reaches the upshift speed, and the motor power is greater than or equal to the set power threshold, the vehicle acceleration a is greater than or equal to a1, the vehicle electric drive system is controlled to upshift, and thereafter, within the set time period (set to 5 seconds), if the motor power is always less than the maximum output power allowed by the motor, it is considered that a1 is reasonably set, but a1 is not necessarily optimal, a1 is multiplied by a correction factor η1 less than 1 to obtain a corrected acceleration, and the vehicle is re-judged and controlled for upshift with the corrected acceleration, when the vehicle power is less than the maximum output power allowed by the motor for a time greater than or equal to the set time period, and the deviation between the time when the vehicle power is less than the maximum output power allowed by the motor and the set time period is the smallest, the corrected acceleration is taken as the acceleration threshold corresponding to the throttle opening and the acceleration rate. If the motor power reaches the maximum output power allowed by the motor within the set time period, power shortage may occur subsequently, resulting in downshift, at which time it is considered that the vehicle should not upshift near a1, and a1 is multiplied by a correction factor η1 greater than 1 to obtain a corrected acceleration, and the vehicle is re-judged and controlled for upshift with the corrected acceleration, when the vehicle power is less than the maximum output power allowed by the motor for a time greater than or equal to the set time period, and the deviation between the time when the vehicle power is less than the maximum output power allowed by the motor and the set time period is the smallest, the corrected acceleration is taken as the acceleration threshold corresponding to the throttle opening and the acceleration rate.
[0038] The correction factor η1 is related to the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed; when the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed is less than the set time period, the correction factor η1 is positively related to the difference between the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed and the set time period, and η1 is between 1 and 2; when the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed is greater than the set time period, the correction factor η1 is negatively related to the difference between the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed and the set time period, and η1 is between 0.5 and 1. When the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed is equal to the set time period, the correction factor η1 is equal to 1, and when the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed is equal to 0, the correction factor η1 is equal to 0.5; when the time when the motor power reaches the maximum output power allowed by the motor after the shift is completed is equal to the set time period plus a correction time, the correction factor η1 is equal to 2.
[0039] The rest of the throttle opening and the acceleration rate corresponding to a set The same processing method is adopted.
[0040] Preferably, the set time period can be set to 5s according to specific requirements, and the correction time is set to 3s, etc.
[0041] The upshift control method of the electric drive system provided in the embodiment increases the actual motor power, the vehicle acceleration and the acceleration threshold value when the vehicle speed reaches the upshift vehicle speed, and controls the electric drive system to upshift when the actual motor power is greater than or equal to the set power threshold value, which indicates that the actual torque of the motor is close to the motor external characteristic. In this case, the motor power is continuously less than the maximum allowable output power of the motor within a set time period after the electric drive system upshifts, which ensures sufficient driving force to control the vehicle acceleration, prevents the vehicle speed from decreasing due to insufficient driving capacity after upshift, and prevents the vehicle from downshifting. In this case, if the vehicle upshifts when the vehicle acceleration is less than the set acceleration threshold value, the vehicle power reaches the maximum allowable output power of the motor in a short time, which causes the vehicle speed to decrease due to insufficient driving capacity and the vehicle to downshift. Therefore, the application prevents the problem of frequent gear shifting caused by the decrease of the vehicle speed due to insufficient driving capacity after the electric drive system upshifts by limiting the vehicle upshift when the actual motor power is greater than or equal to the set power threshold value and the vehicle acceleration is less than the set acceleration threshold value.
[0042] Embodiment 2 In this embodiment, an upshift control system of an electric drive system is disclosed, comprising: a data acquisition unit configured to acquire the actual motor power and the vehicle acceleration when the vehicle speed reaches the upshift vehicle speed; a vehicle gear control unit configured to control the electric drive system to upshift when the actual motor power is equal to the maximum design power of the motor and the vehicle acceleration is greater than or equal to the current acceleration threshold value of the vehicle, and to inhibit the electric drive system from upshifting when the actual motor power is equal to the maximum design power of the motor and the vehicle acceleration is less than the set acceleration threshold value.
[0043] The application further discloses a computer device, which comprises: a processor adapted to execute a computer program; a computer readable storage medium having a computer program stored therein, wherein the computer program is executed by the processor to implement the upshift control method of the electric drive system disclosed in Embodiment 1.
[0044] The application further discloses a computer readable storage medium having a computer program stored therein, wherein the computer program is adapted to be loaded and executed by a processor to implement the upshift control method of the electric drive system disclosed in Embodiment 1.
[0045] The application further discloses a computer program product, which comprises a computer program, and the computer program, when executed by a processor, realizes the upshift control method of the electric drive system disclosed in embodiment 1.
[0046] The method disclosed in embodiment 1 can be directly embodied by a hardware processor to be executed, or be executed by a combination of hardware and software modules in the processor. The software modules can be located in a storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, and the like. The storage medium is located in a memory, and the processor reads information in the memory, and combines hardware to complete the steps of the above method. To avoid repetition, no further detailed description is given here.
[0047] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments can be realized by electronic hardware or a combination of electronic hardware and computer software. Whether the functions are realized by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.
[0048] Although the specific embodiments of the application are described above in combination with the drawings, the description is not a limitation on the protection scope of the application, and those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical solutions of the application without creative labor are still within the protection scope of the application.
Claims
1. An upshift control method for an electric drive system, characterized by, The method comprises the following steps: When the vehicle speed reaches the upshift speed, the actual motor power, the vehicle acceleration and the accelerator opening degree are obtained; According to the vehicle acceleration, the acceleration change rate of the vehicle is determined; According to the acceleration change rate of the vehicle and the accelerator opening degree, the acceleration threshold of the vehicle is determined; When the actual motor power is greater than or equal to the set power threshold and the vehicle acceleration is less than the set acceleration threshold, the upshift of the electric drive system is inhibited; When the actual motor power is greater than or equal to the set power threshold and the vehicle acceleration is greater than or equal to the set acceleration threshold, the upshift of the electric drive system is controlled, and after the upshift of the electric drive system, the motor power is continuously less than the maximum allowed motor output power within a set time period.
2. The method of electric drive system upshift control according to claim 1, characterized in that, When the actual motor power is less than the set power threshold, the upshift of the electric drive system is controlled.
3. The kickdown control method of an electric drive system according to claim 1, characterized by, The set power threshold is determined according to the maximum allowed motor output power.
4. The method of shift-up control of an electric drive system according to claim 1, characterized by, When the vehicle power is greater than or equal to the set power threshold at the corresponding accelerator opening degree and acceleration change rate, the vehicle is upshifted according to various accelerations; The time when the motor power is continuously less than the maximum allowed motor output power after the upshift at each acceleration is obtained; The acceleration corresponding to the time when the motor power is continuously less than the maximum allowed motor output power is greater than or equal to the set time period is selected, and the minimum value is selected from the selected accelerations as the acceleration threshold.
5. The kickdown control method of an electric drive system according to claim 1, characterized by, The process of determining the acceleration threshold corresponding to each acceleration change rate and accelerator opening degree of the vehicle comprises: The initial preset value of the acceleration corresponding to the accelerator opening degree and the acceleration change rate is set; When the vehicle reaches the upshift speed at the accelerator opening degree and the acceleration change rate, and the motor power is greater than or equal to the set power threshold and the acceleration is greater than or equal to the initial preset acceleration, the upshift of the electric drive system is controlled, and the time when the motor power is continuously less than the maximum allowed motor output power after the upshift is obtained; When the time when the motor power is continuously less than the maximum allowed motor output power is not equal to the set time period, the initial preset acceleration is corrected by a correction coefficient to obtain a corrected acceleration; The upshift of the electric drive system is controlled again according to the corrected acceleration until the time when the motor power is continuously less than the maximum allowed motor output power after the upshift of the electric drive system controlled by the corrected acceleration is greater than or equal to the set time period, and the deviation between the time when the motor power is continuously less than the maximum allowed motor output power and the set time period is the minimum, and the corrected acceleration is taken as the acceleration threshold corresponding to the accelerator opening degree and the acceleration change rate.
6. The method of upshift control for an electric drive system of claim 5, wherein, When the time when the motor power is continuously less than the maximum allowed motor output power is greater than the set time period, the correction coefficient is less than 1; When the time when the motor power is continuously less than the maximum allowed motor output power is less than the set time period, the correction coefficient is greater than 1.
7. An electric drive system upshift control system characterized by, The method comprises the following steps: The data acquisition unit is used to obtain the actual motor power, the vehicle acceleration and the accelerator opening degree when the vehicle speed reaches the upshift speed; The acceleration change rate determination unit is used to determine the acceleration change rate of the vehicle according to the vehicle acceleration; The acceleration threshold determination unit is used to determine the acceleration threshold of the vehicle according to the acceleration change rate of the vehicle and the accelerator opening degree; The vehicle gear control unit is used to inhibit the electric drive system to shift up when the actual motor power is greater than or equal to a set power threshold value and the vehicle acceleration is less than a set acceleration threshold value; control the electric drive system to shift up when the actual motor power is greater than or equal to the set power threshold value and the vehicle acceleration is greater than or equal to the set acceleration threshold value, and after the electric drive system shifts up, the motor power is continuously less than the maximum output power allowed by the motor within a set time period.
8. An electronic device, comprising: The device comprises: a processor adapted to execute a computer program; a computer readable storage medium having stored therein a computer program, which, when executed by the processor, implements the electric drive system upshift control method of any one of claims 1-6.
9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, which is adapted to be loaded and executed by the processor to implement the electric drive system upshift control method of any one of claims 1-6.
10. A computer program product, characterised in that, The computer program product comprises a computer program, which, when executed by the processor, implements the electric drive system upshift control method of any one of claims 1-6.