US 12,424,897 B2
Electric motor with integrated cooling system
Mikhail Goykhman, Reseda, CA (US); Armen Baronian, Toronto (CA); Piranavan Suntharalingam, Menomonee Falls, WI (US); and Hongbin Wang, Novi, MI (US)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Appl. No. 17/801,156
Filed by EATON INTELLIGENT POWER LIMITED, Dublin (IE)
PCT Filed Feb. 19, 2021, PCT No. PCT/EP2021/025064
§ 371(c)(1), (2) Date Aug. 19, 2022,
PCT Pub. No. WO2021/164943, PCT Pub. Date Aug. 26, 2021.
Claims priority of provisional application 62/979,849, filed on Feb. 21, 2020.
Claims priority of provisional application 62/979,987, filed on Feb. 21, 2020.
Prior Publication US 2022/0416613 A1, Dec. 29, 2022
Int. Cl. H02K 5/20 (2006.01); H02K 1/20 (2006.01); H02K 9/197 (2006.01); H02K 16/02 (2006.01)
CPC H02K 5/203 (2021.01) [H02K 1/20 (2013.01); H02K 9/197 (2013.01); H02K 16/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric motor assembly comprising:
a) a motor shaft, a stator assembly, and a rotor assembly;
b) a cooling jacket surrounding the stator assembly, the cooling jacket including:
(i) an inner wall facing radially inwardly towards the stator assembly and an opposite outer wall facing radially outwardly;
(ii) a circumferential first internal fluid passageway for allowing a cooling fluid to be pumped through an interior of the cooling jacket, the circumferential first internal fluid passageway being disposed between the inner and outer walls and extending between an inlet and an outlet; and
c) a first end plate covering and in contact with at least a portion of a first end of the stator assembly, the first end plate including a second internal fluid passageway in fluid communication with the circumferential first internal fluid passageway for allowing the cooling fluid to be pumped through an interior of the first end plate, wherein the first end plate is separate from the stator assembly and located between the stator assembly and magnets associated with the electric motor assembly,
wherein the electric motor assembly is an axial flux electric motor assembly.