Invention Application
- Patent Title: AXIAL FLUX MOTOR DRIVE UNIT WITH TWO INDEPENDENT ROTORS SHARING A STATOR
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Application No.: US17324918Application Date: 2021-05-19
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Publication No.: US20220376592A1Publication Date: 2022-11-24
- Inventor: Chengwu Duan , Alan G. Holmes , Jian Yao
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: H02K16/02
- IPC: H02K16/02 ; H02K7/00 ; H02K7/116 ; H02K1/18

Abstract:
An axial flux motor drive unit for an automobile includes a stator defining a core, an output defining an axis of rotation, a first rotor, a second rotor, and a thrust bearing. The first rotor is rotatable about the axis of rotation and is coupled to the output and disposed relative to the stator to create a first air gap. The second rotor is rotatable about the axis of rotation and is coupled to the output and is disposed relative to the stator to create a second air gap. The thrust bearing is coupled to the output and supports axial loads that are substantially parallel to the axis of rotation, and the first rotor is still rotatable about the axis of rotation when the second rotor is inoperable, and the second rotor is still rotatable when the first rotor is inoperable.
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