Multi-motor torque output and distribution controlling method

Abstract

The invention discloses a multi-motor torque output and distribution controlling method. The multi-motor torque output and distribution controlling method comprises the following steps of: a, calculating torques, needed by a vehicle during running, by using vehicle controller modules; b, comparing motor working efficiency of different motor numbers during working, selecting the motor number with the high efficiency, calculating the total motor working efficiency at different torque distributing modes according to the selected motor number, and selecting a torque scheme when the total motor working efficiency is highest as the optimal scheme; c, distributing the motor torques according to an optimal scheme; d; distributing the torques, needed by the vehicle during running, to the motor controller modules with a set number; e; exerting the motor controller modules to control the adaptive motors to work according to the distributed torques; and f, exerting the motors to output the torques to the same driving shaft. According to the scheme, the motor working efficiency can reach the highest level through small calculated amount so that the energy is saved and the driving mileage is increased. The scheme is applied to electric automobiles, which are driven by two and more non-independent motors.

Description

technical field [0001] The invention relates to the field of electric vehicle motor power control, in particular to a multi-motor torque output control distribution method. Background technique [0002] The pure electric vehicle motor torque control method calculates and controls the working state that a single or multiple motors need to achieve, and the single or multiple motors independently provide the driving force required by the vehicle to meet the driving requirements. Existing motor torque control methods are only suitable for electric vehicles driven by two or more motors independently, and cannot guarantee that the motors work in a high-efficiency range, reducing energy use efficiency. [0003] The State Intellectual Property Office of the People's Republic of China published a patent document entitled "Torque Control Method for Electric Vehicles" on October 31, 2012 (publication number: CN102756667A), which includes: calculating the comprehensive correction coeffi...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems existing in the prior art that it is impossible to reasonably control the multi-motor cooperatively driven electric vehicle, the motors work in the low-efficiency range, and the energy usage rate is low, and provides a method that can reasonably allocate the torque of each motor, so that The motor works in the high-efficiency range, and the multi-motor torque output distribution control method that improves the energy utilization rate

Images