Vehicle torque control method and system and vehicle

Abstract

The invention discloses a vehicle torque control method, a vehicle torque control system and a vehicle, which can fully and reasonably use the battery capacity and avoid the problem of insufficient use or excessive use of the battery capacity. The method comprises the following steps: acquiring permitted total driving power which can be provided to at least two driving motors by a power battery, permitted driving power of each driving motor, driving state information of a vehicle and driving road condition information; based on the driving state information and the driving road condition information, determining a whole vehicle wheel end required torque and a target torque distribution coefficient of the vehicle; based on the permitted total driving power, the permitted driving power of each driving motor and the permitted torque, limiting the required torque of the wheel end of the whole vehicle to obtain a required torque limit value of the wheel end of the whole vehicle and a required torque limit value of the wheel end corresponding to each driving motor; and based on the target torque distribution coefficient, the whole vehicle wheel end required torque limit value and the wheel end required torque limit value corresponding to each driving motor, carrying out torque distribution on the at least two driving motors.

Description

technical field [0001] The present application relates to the technical field of vehicles, in particular to a vehicle torque control method, system and vehicle. Background technique [0002] In recent years, countries around the world have paid more and more attention to the application of clean energy, and thus electric vehicle technology has also been vigorously developed, especially electric four-wheel drive technology. Electric four-wheel drive vehicles are usually equipped with two independent drive motors at the front and rear. Compared with the single-motor drive mode, it is more timely in terms of power acceleration and brake recovery response processing, thereby improving the driving performance and low-attachment dynamic stability of the vehicle. Wait. [0003] However, when the electric four-wheel drive vehicle is in operation, the battery capacity may not be fully used or the battery capacity may be excessively used. Therefore, how to fully and rationally use t...

AI Technical Summary

Problems solved by technology

[0003] However, when electric four-wheel drive vehicles are running, they often have the problem of not fully using the battery capacity or excessively using the battery capacity

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