CN-122008896-A - Control method and device for vehicle torque, electronic equipment, storage medium and product

CN122008896ACN 122008896 ACN122008896 ACN 122008896ACN-122008896-A

Abstract

The application discloses a control method and device of vehicle torque, electronic equipment, storage media and products, and relates to the technical field of vehicle driving. The method comprises the steps of determining front driving reference torque of a front driving motor in a vehicle to be detected based on total driving torque of the vehicle to be detected, determining compensation request torque of a rear driving motor in the vehicle to be detected based on front driving actual output torque and total driving torque of the front driving motor under a preset driving logic control mode, and performing torque output control of single control logic on the rear driving motor based on the compensation request torque. The embodiment provided by the application reduces the problem that the total driving torque of the wheel end falls down caused by the rapid decrease of the torque of the rear driving motor and the slow increase of the torque of the front driving motor, thereby reducing the probability of triggering the vehicle to stop and improving the driving experience of a user.

Inventors

FANG HONGZHANG
WANG LAIQIAN
ZHOU ZHIRONG
XIE WEN
YANG JIAN

Assignees

岚图汽车科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20251127

Claims (15)

1. A control method of vehicle torque, characterized by comprising: When a vehicle to be detected drives in a two-drive mode, if a drive switching instruction aiming at the vehicle to be detected is detected, determining to activate a preset drive logic control mode of the vehicle to be detected, wherein the preset drive logic control mode is used for representing that a torque difference value is used for carrying out drive logic control on the vehicle to be detected; determining a front driving reference torque of a front driving motor in the vehicle to be detected based on the total driving torque of the vehicle to be detected, wherein the total driving torque is determined through a driving state parameter of the vehicle to be detected; determining a compensation request torque of a rear drive motor in the vehicle to be detected based on a front drive actual output torque of the front drive machine and the total drive torque in the preset drive logic control mode; and based on the compensation request torque, torque output control of single control logic is performed on the rear drive motor so that the vehicle to be detected is switched from a two-drive mode to a four-drive mode.
2. The method according to claim 1, wherein determining to activate the preset driving logic control mode for the vehicle to be detected if a driving switching command for the vehicle to be detected is detected while the vehicle to be detected is driving in the two-drive mode, comprises: When a vehicle to be detected drives in a two-drive mode, determining whether a drive switching instruction for the vehicle to be detected is detected or not based on the operation condition parameters of the vehicle to be detected and a drive control instruction sent by a whole vehicle controller in the vehicle to be detected; If a driving switching instruction aiming at the vehicle to be detected is detected, the driving switching instruction is used as a trigger signal, and a preset driving logic control mode of the vehicle to be detected is determined to be activated, wherein the operation condition parameters comprise at least one of wheel slip rate, vehicle longitudinal acceleration, vehicle transverse acceleration, steering wheel rotation angle and road surface gradient information.
3. The control method of the vehicle torque according to claim 1, characterized in that the determining of the front drive reference torque of the front drive motor in the vehicle to be detected based on the total drive torque of the vehicle to be detected includes: and determining front driving reference torque of a front driving motor in the vehicle to be detected based on the total driving torque of the vehicle to be detected and a preset front motor torque distribution ratio.
4. The control method of the vehicle torque according to claim 1, characterized in that the running state parameters include a vehicle speed and an accelerator pedal opening, the total driving torque of the vehicle to be detected is determined by: And determining the total driving torque corresponding to the vehicle speed and the accelerator pedal opening from a preset vehicle speed pedal torque mapping table based on the vehicle speed and the accelerator pedal opening of the vehicle to be detected.
5. The control method of the vehicle torque according to claim 1, characterized in that the determining the compensation request torque of the rear drive motor in the vehicle to be detected based on the front drive actual output torque of the front drive machine and the total drive torque includes: slope limiting processing is carried out on the front driving reference torque according to a front driving slope, and the front driving actual output torque corresponding to the front driving motor is determined; and calculating a difference between the front drive actual output torque and the total drive torque, and determining the difference as a compensation request torque of the rear drive motor in the vehicle to be detected.
6. The method of controlling torque of a vehicle according to claim 1, wherein the torque output control of the rear drive motor based on the compensation request torque by a single control logic includes: Slope limiting processing is carried out on the compensation request torque according to a first rear driving slope, and a first rear driving actual output torque of the rear driving motor is determined; and taking the first rear drive actual output torque as an execution torque, and performing torque output control of a single control logic on the rear drive motor.
7. The control method of vehicle torque according to claim 1, characterized in that the method further comprises: when the preset driving logic control mode of the vehicle to be detected is not activated, determining rear driving reference torque of a rear driving motor in the vehicle to be detected based on the total driving torque of the vehicle to be detected; Slope limiting processing is carried out on the rear driving reference torque according to a second rear driving slope, and a second rear driving actual output torque corresponding to the rear driving motor is determined; and taking the actual output torque of the second rear drive as the execution torque, and performing torque output control of a single control logic on the rear drive motor.
8. The method of controlling a vehicle torque according to claim 7, characterized in that the determining a rear drive reference torque of a rear drive motor in the vehicle to be detected based on the total drive torque of the vehicle to be detected includes: And determining the rear driving reference torque of the rear driving motor in the vehicle to be detected based on the total driving torque of the vehicle to be detected and the preset rear motor torque distribution proportion.
9. The control method of vehicle torque according to claim 1, characterized in that the method further comprises: Monitoring the actual running state of the preset driving logic control mode; And when the actual running state meets a preset driving exit condition, exiting the preset driving logic control mode.
10. The method of controlling vehicle torque according to claim 9, characterized in that the preset drive exit condition includes at least one of: The duration of the actual running state exceeds a first preset time threshold; The difference between the front drive actual output torque of the front drive machine and the front drive reference torque is lower than a first preset tolerance.
11. The control method of the vehicle torque according to any one of claims 5 or 7, characterized in that the front drive gradient is determined by an accelerator pedal opening, a vehicle speed, and an initial front drive reference torque; the first rear drive gradient and the second rear drive gradient are each determined by the accelerator pedal opening, the vehicle speed, and an initial rear drive reference torque.
12. The utility model provides a controlling means of vehicle torque which characterized in that, the torque controlling means of two drives of vehicle cuts four drives includes: The first determining module is used for determining to activate a preset driving logic control mode of the vehicle to be detected if a driving switching instruction aiming at the vehicle to be detected is detected when the vehicle to be detected drives in a two-drive mode, wherein the preset driving logic control mode is used for representing that the torque difference value is used for driving logic control of the vehicle to be detected; A second determining module, configured to determine a front driving reference torque of a front driving motor in the vehicle to be detected based on a total driving torque of the vehicle to be detected, where the total driving torque is determined by a driving state parameter of the vehicle to be detected; a third determining module, configured to determine, in the preset driving logic control mode, a compensation request torque of a rear driving motor in the vehicle to be detected based on a front driving actual output torque of the front driving machine and the total driving torque; and the first control module is used for controlling the torque output of the rear drive motor by single control logic based on the compensation request torque so as to switch the vehicle to be detected from a two-drive mode to a four-drive mode.
13. An electronic device comprising a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory in communication via the bus when the electronic device is in operation, the machine-readable instructions being executable by the processor to perform the steps of the method of controlling vehicle torque as claimed in any one of claims 1 to 11.
14. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the method of controlling a vehicle torque according to any one of the preceding claims 1-11.
15. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, realizes the steps of the vehicle torque control method according to any one of claims 1 to 11.

Description

Control method and device for vehicle torque, electronic equipment, storage medium and product Technical Field The present application relates to the field of vehicle driving technologies, and in particular, to a method and apparatus for controlling torque of a vehicle, an electronic device, a storage medium, and a product. Background At present, along with the development of society and the progress of science and technology, more and more users begin to use new energy sources for traveling, so that the power energy source display of the new energy automobile is ensured, and the front asynchronous motor and the rear synchronous motor are combined to be the trend of power collocation of the new energy automobile in the future. However, although the front asynchronous motor has lower cost than the synchronous motor, the front asynchronous motor has lower working efficiency, so that the driving energy consumption of the vehicle is high and the driving mileage is poor, in order to solve the problems, when the vehicle with power collocation is in an economic mode, the synchronous motor with higher working efficiency is often utilized to perform rear driving (namely, the front motor is in a non-working state), and two-drive cutting and four-drive are performed under certain specific working conditions, and in the process of switching the two-drive driving into four-drive driving, the control process is complex because the request torque is transferred from the rear motor part to the front motor, the torque descending slope of the rear motor is large, the torque ascending slope of the front motor is small, and pits are formed after the request torque of the front motor and the rear motor are superposed, so that the vehicle is in a pause and the driving experience of a user is influenced. Disclosure of Invention The embodiment of the application provides a control method, a device, electronic equipment, a storage medium and a product for vehicle torque, solves the technical problems that in the prior art, pits are formed after front and rear motor request torques are overlapped, so that vehicle setbacks are caused, and driving experience of a driver is affected. In a first aspect of the embodiment of the present application, the embodiment of the present application provides a method for controlling a vehicle torque, where the method for controlling a vehicle torque includes: When a vehicle to be detected drives in a two-drive mode, if a drive switching instruction aiming at the vehicle to be detected is detected, determining to activate a preset drive logic control mode of the vehicle to be detected, wherein the preset drive logic control mode is used for representing that a torque difference value is used for carrying out drive logic control on the vehicle to be detected; determining a front driving reference torque of a front driving motor in the vehicle to be detected based on the total driving torque of the vehicle to be detected, wherein the total driving torque is determined through a driving state parameter of the vehicle to be detected; determining a compensation request torque of a rear drive motor in the vehicle to be detected based on a front drive actual output torque of the front drive machine and the total drive torque in the preset drive logic control mode; and based on the compensation request torque, torque output control of single control logic is performed on the rear drive motor so that the vehicle to be detected is switched from a two-drive mode to a four-drive mode. In a possible implementation manner, when the vehicle to be detected drives in the two-wheel drive mode, if a drive switching command for the vehicle to be detected is detected, determining to activate a preset drive logic control mode for the vehicle to be detected includes: When the vehicle to be detected drives in the two-drive mode, based on the operation condition parameters of the vehicle to be detected and the driving control instruction sent by the whole vehicle controller in the vehicle to be detected, determining whether the driving switching instruction for the vehicle to be detected is detected, If a driving switching instruction aiming at the vehicle to be detected is detected, the driving switching instruction is used as a trigger signal, and a preset driving logic control mode of the vehicle to be detected is determined to be activated, wherein the operation condition parameters comprise at least one of wheel slip rate, vehicle longitudinal acceleration, vehicle transverse acceleration, steering wheel rotation angle and road surface gradient information. In a possible embodiment, the determining the front drive reference torque of the front drive motor in the vehicle to be detected based on the total drive torque of the vehicle to be detected includes: and determining front driving reference torque of a front driving motor in the vehicle to be detected based on the total driving torque of the vehicle to be detected