US 12,244,178 B2
Thermal connection system for a stator core of an axial flux electric motor
John S. Agapiou, Rochester Hills, MI (US); Jian Yao, Shanghai (CN); Zhen Gao, Shanghai (CN); and SeungHwan Keum, Northville, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jul. 26, 2022, as Appl. No. 17/873,470.
Claims priority of application No. 202210782749.0 (CN), filed on Jul. 5, 2022.
Prior Publication US 2024/0014699 A1, Jan. 11, 2024
Int. Cl. H02K 1/20 (2006.01); H02K 1/14 (2006.01); H02K 1/16 (2006.01); H02K 1/2798 (2022.01); H02K 3/24 (2006.01); H02K 5/20 (2006.01); H02K 7/00 (2006.01); H02K 16/02 (2006.01); H02K 21/24 (2006.01); H02K 9/22 (2006.01)
CPC H02K 1/20 (2013.01) [H02K 1/145 (2013.01); H02K 1/16 (2013.01); H02K 1/2798 (2022.01); H02K 5/203 (2021.01); H02K 16/02 (2013.01); H02K 3/24 (2013.01); H02K 7/006 (2013.01); H02K 9/227 (2021.01); H02K 21/24 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An axial flux electric motor comprising:
a housing including an inner surface;
a stator fixedly mounted in the housing, the stator including a plurality of stator segments each supporting a winding, an inner support member defining a central passage, and an outer annular member constraining the plurality of stator segments, the outer annular member including an outer surface portion abutting the inner surface of the housing; and
a thermal connection system disposed between the outer surface portion of the outer annular member and the inner surface, the thermal connection system transferring heat from the stator into the housing,
wherein the inner surface of the housing includes a plurality of annular recesses and the outer surface portion of the outer annular member includes a plurality of annular recess portions and wherein spaces between the plurality of annular recesses and the plurality of annular recess portions define a plurality of cooling pipes that are disposed adjacent to one another in an axial direction.