Dual-motor torque distribution method and device

Abstract

The invention discloses a dual-motor torque distribution method and device, and belongs to the technical field of vehicle control. The method comprises the steps that the target speed and the target wheel end torque of a target vehicle are acquired; according to the target speed and the target wheel end torque of the target vehicle, interpolation is carried out in a pre-stored torque distribution MAP to obtain a target torque distribution pair, and the target torque distribution pair corresponds to the torque distribution pair with the minimum total loss power under the target speed and the target wheel end torque; and based on the first target torque distribution coefficient and the second target torque distribution coefficient in the target torque distribution pair, torque is distributed to a first target motor and a second target motor of the target vehicle. According to the torque distribution method and device, the target vehicle can distribute the torque through the first target torque distribution coefficient and the second target torque distribution coefficient in the target torque distribution pair, the loss power of the target vehicle at the target speed is minimum, and energy waste is reduced.

Description

technical field [0001] The present application relates to the technical field of vehicle control, and in particular, to a method and device for torque distribution of dual motors. Background technique [0002] In order to meet the national requirements for energy conservation and emission reduction, the electrification of vehicles has developed rapidly, and the market share of hybrid vehicles has increased year by year. Common hybrid systems include single-motor and dual-motor solutions. Among them, the dual motor scheme can distribute the power demand between the two motors. [0003] In the related art, in order to have the best running effect of the vehicle, the target vehicle often uses the motor torque distribution method corresponding to the maximum efficiency to distribute the torque of the motor. [0004] However, when the target vehicle distributes the torque of the motor according to the most efficient motor torque distribution method, the energy loss of the targe...

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Problems solved by technology

[0004] However, when the target vehicle allocates the torque of the motor according to the maximum efficiency motor torque distribution method, the energy loss of the target vehicle is not the minimum at this time, resulting in energy waste

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