Invention Grant
- Patent Title: Bi-material permanent magnets for electric machines
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Application No.: US17116661Application Date: 2020-12-09
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Publication No.: US11936239B2Publication Date: 2024-03-19
- Inventor: Alireza Fatemi , Anil K. Sachdev , Jian Yao , Anthony M. Coppola , Thomas W. Nehl , Chengwu Duan
- 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
- Priority: CN 2011346829.9 2020.11.26
- Main IPC: H02K1/02
- IPC: H02K1/02 ; H01F1/032 ; H01F1/053 ; H01F41/02 ; H02K1/2793 ; H02K1/32 ; H02K15/03 ; H02K21/24
Abstract:
A bi-material permanent magnet for an electric machine includes a core including a first magnetic material and a shell portion located on the core and made of a second magnetic material. The first magnetic material comprises a magnet material with an energy less than 20 Mega Gauss Oersteds (MGOe). The second magnetic material comprises a magnet material with an energy greater than 30 MGOe.
Public/Granted literature
- US20220166264A1 BI-MATERIAL PERMANENT MAGNETS FOR ELECTRIC MACHINES Public/Granted day:2022-05-26
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