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Hub motor with mechanical differential mechanism and used for pure electric automobile

A mechanical differential, pure electric vehicle technology, applied in the direction of electric vehicles, motors, electric components, etc., can solve the problems of unfavorable four-wheel drive layout of automobiles, affecting the smoothness of the whole vehicle, large unsprung mass of automobiles, etc., and achieve mechanical transmission. The effect of increased efficiency, reduced quality, and improved manufacturing processes

Inactive Publication Date: 2019-12-20
湖南猎豹汽车股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the entire field of pure electric vehicle technology, all powertrain design layouts follow the traditional automotive internal combustion engine powertrain layout structure: that is, the electric motor plus transmission transmits torque to the driving wheels of the vehicle through the differential and the drive shaft, so There are still problems of low transmission efficiency and large layout space requirements; another more advanced pure electric vehicle layout method is to use two sets of motors plus wheel-side reducers with differentials to drive the left and right wheels respectively. The transmission efficiency is improved, but the structure is bulky, resulting in a large unsprung mass of the vehicle, which seriously affects the ride comfort of the vehicle. At the same time, the transmission efficiency is still unsatisfactory. In addition, this structure is not conducive to the four-wheel drive layout of the vehicle; at present, the third pure electric vehicle layout type is The wheel hub motor is directly used to drive, and the wheel differential speed of the car is realized through the electronic controller, but the control logic is complicated and the stability is poor, so it has not been used in batches

Method used

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  • Hub motor with mechanical differential mechanism and used for pure electric automobile
  • Hub motor with mechanical differential mechanism and used for pure electric automobile
  • Hub motor with mechanical differential mechanism and used for pure electric automobile

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Embodiment Construction

[0011] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0012] Such as figure 1 , 2 . As shown in 3, a wheel hub motor with a mechanical differential for a pure electric vehicle includes a mechanical differential ring gear 5, one end of the mechanical differential ring gear 5 is smooth and gearless, and the other end is provided with a full circle Gear, the mechanical differential ring gear 5 includes a planetary gear carrier 2 at one end of the gear, the planetary gear carrier 2 is connected with the hub of the automobile wheel 1, and 4 planetary gears are installed on the planetary gear carrier 2 4. The four planetary gears 4 mesh with the gears of the mechanical differential ring gear 5 at equal intervals, and the sun gear 3 is installed in the middle of the four planetary gears 4, and the sun gear 3 meshes with the four planet...

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Abstract

The invention provides a hub motor with a mechanical differential mechanism and used for a pure electric automobile. The hub motor comprises a mechanical differential mechanism gear ring, wherein a planet gear carrier is arranged in the mechanical differential mechanism gear ring; the planet gear carrier is connected with hubs of automobile wheels; a plurality of planet gears are mounted on the planet gear carrier; the plurality of planet gears are engaged with gears of the mechanical differential mechanism gear ring; a rotor assembly of the motor and a sun gear are arranged inside the mechanical differential mechanism gear ring; the sun gear is engaged with the plurality of planet gears; a stator assembly of the motor is mounted on the outer ring of the end part of the sun gear; and the stator assembly is matched with the rotor assembly. According to the hub motor with the mechanical differential mechanism for the pure electric automobile, the mechanical differential mechanism and thehub motor are integrally designed, so that the structure is compact, the performance is reliable, the transmission efficiency is high, and meanwhile, the realization of four-wheel drive of the pure electric automobile is ensured.

Description

technical field [0001] The invention belongs to the technical field of hub motors and relates to a hub motor with a mechanical differential for pure electric vehicles. Background technique [0002] At present, in the entire field of pure electric vehicle technology, all powertrain design layouts follow the traditional automotive internal combustion engine powertrain layout structure: that is, the electric motor plus transmission transmits torque to the driving wheels of the vehicle through the differential and the drive shaft, so There are still problems of low transmission efficiency and large layout space requirements; another more advanced pure electric vehicle layout method is to use two sets of motors plus wheel-side reducers with differentials to drive the left and right wheels respectively. The transmission efficiency is improved, but the structure is bulky, resulting in a large unsprung mass of the vehicle, which seriously affects the ride comfort of the vehicle. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/16B60K7/00H02K7/00H02K7/116
CPCB60K7/0007B60K17/16H02K7/006H02K7/116Y02T10/64
Inventor 李启良梁进利藤瑞品
Owner 湖南猎豹汽车股份有限公司
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