US 12,348,083 B2
Electric motor stator and electric motor
Naoki Seki, Tokyo (JP); and Fuminori Suzuki, Tokyo (JP)
Assigned to IHI Corporation, Tokyo (JP)
Filed by IHI Corporation, Tokyo (JP)
Filed on Aug. 8, 2022, as Appl. No. 17/882,686.
Application 17/882,686 is a continuation of application No. PCT/JP2021/006975, filed on Feb. 25, 2021.
Claims priority of application No. 2020-086027 (JP), filed on May 15, 2020.
Prior Publication US 2022/0385123 A1, Dec. 1, 2022
Int. Cl. H02K 1/20 (2006.01); H02K 1/16 (2006.01); H02K 3/12 (2006.01); H02K 3/24 (2006.01)
CPC H02K 1/20 (2013.01) [H02K 1/16 (2013.01); H02K 3/12 (2013.01); H02K 3/24 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A stator for an electric motor, comprising:
a coil of a winding of a flat wire conductor;
a stator core including a slot for housing a part of the coil; and
a flow passage part through which a coolant flows, provided between a wall part of the slot and an outer surface of the coil facing the wall part in a circumferential direction of the stator core, wherein
the flat wire conductor is stacked in layers along a radial direction orthogonal to an axial direction of the stator core, and
an extension shape of the flow passage part from an inlet to an outlet for the coolant changes along the axial direction of the stator core.