ELECTRIC VEHICLE AND DUAL-MOTOR PLANET GEAR POWER TRANSMISSION SYSTEM THEREOF

Title:

ELECTRIC VEHICLE AND DUAL-MOTOR PLANET GEAR POWER TRANSMISSION SYSTEM THEREOF

Document Type and Number:

WIPO Patent Application WO/2019/161738

Kind Code:

A1

Abstract:

Disclosed are an electric vehicle and a dual-motor planet gear power transmission system thereof. The dual-motor planet gear power transmission system mainly comprises two identical power transmission subsystems. Each power transmission subsystem includes an electric motor (210, 220) and a reducer (120, 130) arranged on an auxiliary frame, and the electric motor is connected to an axle shaft (300, 400) of the electric vehicle via the reducer such that wheels can be driven to rotate. The reducer mainly includes a single-stage cylindrical gear reduction mechanism and a planet gear reduction mechanism in driving connection with each other, the two reduction mechanisms enable the reducer to gain a high reduction ratio as well as a compact layout space, and therefore, the electric vehicle can gain a better low-speed performance.

Inventors:

KE FENG (CN)
SHI KAI (CN)
CHAI SHAOBIAO (CN)
LIU SHUNLONG (CN)

Application Number:

PCT/CN2019/074415

Publication Date:

August 29, 2019

Filing Date:

February 01, 2019

Export Citation:

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Assignee:

NIO NEXTEV LTD (CN)

International Classes:

B60K1/02; B60K17/04; F16H37/04; F16H57/10

Foreign References:

CN101519040A	2009-09-02
CN108528186A	2018-09-14
CN102848908A	2013-01-02
CN206600423U	2017-10-31
CN1603153A	2005-04-06
CN206889591U	2018-01-16
US7866432B2	2011-01-11

Other References: