Two-speed transmission system integrated with inner rotor hub motor and electric vehicle using same

US11358468B2 · kind B2 · utility

Assignee

• JILIN UNIVERSITY · CN

Inventors

• Junnian Wang · Changchun, CN
• Kai Wang · 安丰镇, CN
• Dachang Guo · Jilin, CN
• Chunlin Zhang · Changchun, CN
• Rui Luo · Shanghai, CN
• Zhenhao Zhang · Jilin, CN
• Jiulong Gao · Jilin, CN
• Jiantu Ni · Jilin, CN

Key dates

• Filing date: Dec 6, 2019
• Grant date: Jun 14, 2022
• Expiry date: Jan 19, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K5/1732
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A two-speed transmission system integrated with an inner rotor hub motor, including an inner rotor hub motor, a steering knuckle, a fastening screw, a first transmission casing, a second transmission casing, a screw, a first planetary gear train, a second planetary gear train, a first electromagnetic brake, a second electromagnetic brake, a tire, a wheel rim, a rim bolt, a rim nut, a wheel hub, a shaft end bolt, a brake disc and a brake caliper. This invention also provides an electric vehicle, which balances the requirements for dynamics performance and driving economics and achieves better overall performances. The two-speed transmission system of this invention realizes gear shifting and long-term no-power parking braking.