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Coaxial type electric drive axle suitable for electrombile

A coaxial, electric drive technology, applied in electric power units, power units, vehicle components, etc., can solve the problems of small speed ratio of reducer, different shaft arrangement, etc., to achieve increased transmission ratio, short clutch time, Smooth transmission

Pending Publication Date: 2017-05-10
CHINA AUTOMOTIVE ENG RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fourth is to arrange the motor, differential and half shaft coaxially, and the reducer is arranged in parallel but not on the same axis. It has the characteristics of more compact structure, high transmission efficiency, light weight, small size, and convenient installation, but the speed ratio of the reducer is small. , suitable for small electric vehicles, so there is an urgent need for a coaxial electric drive system that can be applied to electric vehicles

Method used

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  • Coaxial type electric drive axle suitable for electrombile
  • Coaxial type electric drive axle suitable for electrombile
  • Coaxial type electric drive axle suitable for electrombile

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0021] Technical scheme of the present invention is as follows:

[0022] Such as figure 1 , 2 , 3, in the present invention, the motor 2, the first-stage planetary reducer 3, the second-stage planetary reducer 4, the clutch 5, and the differential 6 are all installed on the combined housing 1, and the motor 2 includes a rotor 21 and a stator 22 , the rotor is a hollow structure, in the mechanism, the motor rotor is fixedly connected with the sun gear of the first-stage planetary reducer 3, as the input end of the power, the planet carrier of the first-stage planetary reducer 3 is connected with the sun gear of the second-stage planetary reducer 4 Wheel connection realizes the transmission of power. The ...

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Abstract

The invention discloses a coaxial type electric drive axle suitable for an electrombile. The coaxial type electric drive axle comprises a motor, a planetary reducer, a clutch and a differential mechanism. The motor, the planetary reducer and the differential mechanism are arranged coaxially and sequentially. The motor communicates with the planetary reducer. The planetary reducer is of an adjustable speed ratio structure. The clutch is arranged between the planetary reducer and the differential mechanism and is used for switching on and switching off a power transmission chain. The planetary reducer comprises a one-level planetary reducer and a two-level planetary reducer. One end of the one-level planetary reducer is connected with the motor. The other end of the one-level planetary reducer is connected with a two-level planetary reducer gear. The one-level planetary reducer and the two-level planetary reducer form the adjustable speed ratio structure. Output of different torque is achieved by adjusting the speed ratio. The coaxial type electric drive axle is compact in structure, high in integration level and high in transmission efficiency, transmitted torque is large, and the shell structure is simple.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicle drive, and in particular relates to a method of directly connecting the output shaft of a motor with the sun gear of a first-stage planetary reducer. Connected to form an electric drive axle with coaxial arrangement of motor, two-stage planetary reducer and differential and integrated clutch. Background technique [0002] At present, there are generally four layout schemes for the drive system of electric vehicles: one is to adopt the traditional drive system layout and replace the internal combustion engine with an electric motor. The electric motor and the reducer are coaxially arranged, arranged parallel to the differential but not coaxially, and combined into a driving body. This structure is simple to manufacture and easy to install, but the motor and reducer take up a lot of space and the shell structure is complex . The third is to adopt the wheel-side motor mechanism, the moto...

Claims

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Application Information

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IPC IPC(8): B60K1/00B60K17/04
CPCB60K1/00B60K17/046B60K2001/001
Inventor 张亚明李林周莎张裕强陈纯纯
Owner CHINA AUTOMOTIVE ENG RES INST
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