US 12,266,997 B2
Thermal bridge for an electric machine
Jian Yao, Shanghai (CN); Chengwu Duan, Shanghai (CN); SeungHwan Keum, Northville, MI (US); and Denghao Fan, Shanghai (CN)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jul. 18, 2022, as Appl. No. 17/866,910.
Claims priority of application No. 202210584440.0 (CN), filed on May 27, 2022.
Prior Publication US 2023/0387757 A1, Nov. 30, 2023
Int. Cl. H02K 9/22 (2006.01); H02K 5/20 (2006.01); H02K 9/19 (2006.01)
CPC H02K 9/223 (2021.01) [H02K 5/203 (2021.01); H02K 9/19 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric machine comprising:
a housing having an inner surface;
a stator including a stator core mounted in the housing, the stator core including a plurality of stator windings;
a rotor mounted to a shaft in the housing, the rotor being adjacent to a first axial end of the stator, the rotor being axially spaced apart from the stator, such that the electric machine is an axial air gap electric machine;
a first thermal bridge extending between the stator core and the inner surface of the housing at a first axial end of the stator core and a second thermal bridge, distinct from the first thermal bridge and extending between the stator core and the inner surface of the housing at a second axial end of the stator core, the first and second thermal bridges being formed from a non-magnetic material and including a plurality of individual thermal bridge elements.