A differential speed method driven by multiple motors

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

Active Publication Date: 2018-05-22
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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  • A differential speed method driven by multiple motors

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Embodiment Construction

[0016] like 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 gear a...

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Abstract

The invention discloses a differential speed method driven by multiple motors. A motor vehicle is equipped with at least one pair of symmetrical driving motors on the driving wheels. Each pair of driving wheels is respectively connected to the same driving axle. 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. The differential speed method driven by multiple motors provided by the present invention solves the problem of the differential speed of multiple wheel side motors or hub motors in principle, and the electronic differential speed can adopt the most stable solution, which greatly reduces the design and manufacture of motor consistency. The difficulty of matching can improve the long-term reliability and controllability of the motor and other more important performances.

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 Patents(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
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