Method and apparatus for dual motor torque distribution

Abstract

The present application discloses a method and device for torque distribution of dual motors, which belong to the technical field of vehicle control. The method includes: acquiring a target speed and a target wheel-end torque of a target vehicle; interpolating in a pre-stored torque distribution map through the target speed and target wheel-end torque of the target vehicle to obtain a target torque distribution pair, wherein, The target torque distribution pair is the torque distribution pair corresponding to the minimum total power loss under the target speed and the target wheel end torque; 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 electric machine and a second target electric machine of the target vehicle. In the present application, the target vehicle can distribute torque through the first target torque distribution coefficient and the second target torque distribution coefficient in the target torque distribution pair, and the target vehicle loses the least power at the target speed, reducing the waste of energy.

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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