Dual motor coaxial e-axle with rotor shaft locking mechanism
US11198359B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2019 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Feb 2, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2001/103
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for selectively locking two coaxial axle shafts of an electric axle is provided. The system includes a first electric motor having a first rotor shaft configured to drive a first axle shaft. The system also includes a second electric motor having a second rotor shaft configured to drive a second axle shaft coaxial with the first axle shaft. An actuator is configured to selectively activate to operate in a safety mode. When operated to assume the safety mode, the actuator causes the first rotor shaft to lock to the second rotor shaft, such that the two shafts rotate in unison. This allows one of the two motors to drive both axle shafts in the event of a fault in one of the motors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.