Differential control method for multi-motor driving of electric automobile

A multi-motor drive, electric vehicle technology, applied in the direction of electric vehicles, motors, control devices, etc., to maintain the effect of driving and driving, and the steering operation is sensitive and smooth

Pending Publication Date: 2020-06-12
张赛夫 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current electronic differential mainly includes speed control, torque control, slip rate control, etc., but none of the electronic differentials can achieve the differential effect of single motor drive in principle.

Method used

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  • Differential control method for multi-motor driving of electric automobile
  • Differential control method for multi-motor driving of electric automobile

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution, and provides detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.

[0060] figure 1 It is a force analysis diagram of a multi-motor drive differential speed control method for an electric vehicle according to an embodiment of the present invention, figure 2 It is an analysis diagram of force analysis of the front wheels of a multi-motor driven differential speed control method for an electric vehicle according to an embodiment of the present invention, as shown in figure 1 and figure 2 Shown, the present invention comprises the following steps:

[0061] S1. Install symmetrically arranged driving motors on the front left and right driving wheels and the rear left and right driving wheels of ...

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Abstract

The invention discloses a differential control method for multi-motor driving of an electric automobile. The method comprises the following steps that: S1, symmetrically arranged driving motors are arranged on a left driving wheel and a right driving wheel at the front part and a left driving wheel and a right driving wheel at the rear part of the electric automobile, and independently drive the wheels to rotate; and S2, motors are driven in bilateral symmetry output equal torque, and control of the vehicle speed is achieved by controlling the torque of the motors through an accelerator pedal.According to the differential control method for the multi-motor driving of the electric automobile adopting the structure, the power of the driving motor is changed due to the change of the load ofthe driving wheel in the running process of the automobile, and the rotating speed can be adaptively changed due to the characteristic of motor power output to achieve the effect of natural differential while the left torque and the right torque are kept equal.

Description

technical field [0001] The invention relates to an electric vehicle technology, in particular to a differential speed control method driven by multiple motors of an electric vehicle. Background technique [0002] In recent years, with the shortage of global oil resources, the increasing air pollution and the improvement of battery technology, opportunities have been brought to the development of pure electric vehicles. Pure electric vehicles are highly sought after by many domestic and foreign automobile manufacturers due to their low noise, zero emissions, and high energy transfer efficiency. General Motors, Ford, Toyota, Honda and other automobile manufacturers have developed their own pure electric vehicle products. [0003] At the same time, electric vehicles are not only a trend requirement for environmental protection and energy saving, but also a national strategy for overtaking on bends in my country's auto industry. The prior art multi-motor drive is driven by a si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/356B60L15/20
CPCB60K17/356B60L15/20Y02T10/64Y02T10/72
Inventor 张赛夫石建民
Owner 张赛夫
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