Invention Grant
- Patent Title: Two-speed transmission for electric vehicle
-
Application No.: US14972080Application Date: 2015-12-16
-
Publication No.: US09809098B2Publication Date: 2017-11-07
- Inventor: Chia Tsao , Jui-Tang Tseng , Kun-Ju Xie , Tsung-Han Wu
- Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
- Applicant Address: TW Hsinchu
- Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
- Current Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
- Current Assignee Address: TW Hsinchu
- Agency: Rabin & Berdo, P.C.
- Priority: TW104136306A 20151104
- Main IPC: F16H3/44
- IPC: F16H3/44 ; B60K1/00 ; F16H3/66

Abstract:
A two-speed transmission for an electric vehicle including an electric motor, a first transmission mechanism and a second transmission mechanism is provided. The electric motor includes a rotor and a spindle. The rotor drives a first sun gear and a first planet gear of the first transmission mechanism to rotate with respect to the first ring gear to generate a first gear ratio. The rotor drives a second sun gear and a second planet gear of the second transmission mechanism to rotate with respect to the second ring gear to generate a second gear ratio different from the first gear ratio. When the first clutch connects with the spindle, the second clutch separates from the spindle, and a first torque is outputted to the spindle. When the second clutch connects with the spindle, the first clutch separates from the spindle, and a second torque is outputted to the spindle.
Public/Granted literature
- US20170122413A1 TWO-SPEED TRANSMISSION FOR ELECTRIC VEHICLE Public/Granted day:2017-05-04
Information query