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Multi-motor drive differential method

A multi-motor drive, differential technology, applied in electric vehicles, control drive, power management, etc., to improve long-term reliability and controllability, reduce the difficulty of design, manufacture and selection

Active Publication Date: 2016-08-10
HIGER
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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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  • Multi-motor drive differential method

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Embodiment Construction

[0016] Such as figure 1 As shown, the present invention discloses a multi-motor driven differential method. The motor vehicle installs three pairs of left and right symmetrical driving motors on the driving wheels, each pair of driving wheels is respectively connected to the same drive axle, and a middle motor passes through The electronic differential is connected to one drive axle, and if there are more than one pair of drive wheels, the drive axles are connected in turn through the center differential. The driving motor is a hub motor or a wheel motor. The transmission form between the wheel motor and the drive wheel is belt drive, chain drive or planetary gear drive, and the output shaft of the wheel motor is parallel to the drive wheel shaft.

[0017] The power of the central motor is 1 to 3 times of the maximum torque difference Nd between the left and right sides of the electronic differential. The function of the combination of the central motor, the differential gea...

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Abstract

The invention discloses a multi-motor drive differential method. At least one pair of driving motors which are bilaterally symmetrical are installed on a driving wheel of a motor vehicle. Each pair of driving wheels is connected with the same driving axle. A middle motor is connected to one driving axle through an electronic differential. If the number of the pairs of driving wheels is larger than one, the driving axles are sequentially connected through center differentials. Each driving motor is a hub motor or a wheel edge motor. The transmission mode between the wheel edge motors and the driving wheel is belt transmission or chain transmission or planetary gear transmission. Output shafts of the wheel edge motors are parallel to a driving wheel axle. By the adoption of the multi-motor drive differential method, differential of the wheel edge motors or the hub motors is achieved in principle, the most stable scheme can be adopted for electronic differential, the designing, manufacturing and matching difficulty of motor consistency is greatly lowered, and the long-term reliability, controllability and other more important properties of the motors can be improved.

Description

technical field [0001] The invention relates to an electronic control system of an electric vehicle, in particular to a differential speed method driven by multiple motors of the electric vehicle. Background technique [0002] 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 early electric vehicles were all driven by a single motor, and the development of technology increasingly requires dual-motor independent wheel drive or multi-motor drive. Compared with single-motor drive, multi-motor drive system simplifies the transmission system, improves drive efficiency and driving range, and is conducive to realizing the electronicization and automation of the automobile chassis. There are mainly three types of multi-motor drives in the prior art: the motor is driven by a reducer and drive axle, the inner rotor hub motor is driven by a planetary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L15/32
CPCB60L15/2036B60L15/32B60L2240/421B60L2240/461Y02T10/72
Inventor 王世强史成龙宋泽琳熊金峰张卫林
Owner HIGER