Invention Grant
- Patent Title: Rotary electric machine with adhesive-reinforced rotor
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Application No.: US17084181Application Date: 2020-10-29
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Publication No.: US11689074B2Publication Date: 2023-06-27
- Inventor: Anthony M. Coppola , Kestutis A. Sonta , Alireza Fatemi , Gayatri V. Dadheech , Yew Sum Leong , Xiaosong Huang
- 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
- Agency: Quinn IP Law
- Main IPC: H02K1/28
- IPC: H02K1/28 ; B60K1/00 ; H02K1/27 ; H02K1/32 ; H02K15/03 ; H02K21/14 ; H02K1/276

Abstract:
An adhesive-reinforced rotor for a rotary electric machine includes rotor lamination layers (“rotor lams”) having axial inner surfaces collectively defining rotor openings through the rotor lams. The rotor also includes reinforcement blocks disposed within a respective one of the rotor openings. A polymer primer/adhesive layer of the rotor having a bond line thickness of less than 1 mm is disposed between the one or more reinforcement blocks and the axial inner surfaces of the rotor lams. The reinforcement blocks and the primer/adhesive layer each have a tensile strength of at least 50 MPa. A modulus of elasticity of the reinforcement blocks is at least three times greater than that of the materials of the polymer primer/adhesive layer. A method of constructing an adhesive-reinforced rotor is also described herein.
Public/Granted literature
- US20220140680A1 ROTARY ELECTRIC MACHINE WITH ADHESIVE-REINFORCED ROTOR Public/Granted day:2022-05-05
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