公开(公告)号：US20210313858A1

公开(公告)日：2021-10-07

申请号：US17135276

申请日：2020-12-28

Applicant: LG ELECTRONICS INC.

Inventor： Wonjung Sung ,  Jaemin Kim ,  Gyeongjae Park ,  Jeongmin Lee

IPC: H02K5/20 ,  H02K9/193

Abstract: A motor according to an embodiment of the present disclosure may include a housing comprising an accommodation space and a refrigerant supply hole; a stator core disposed in the accommodation space and coupled to an inner circumferential surface of the housing; a rotor core rotatably disposed in the accommodation space; a shaft coupled to a central portion of the rotor core; and a refrigerant supply groove formed as a recess in a portion of the inner circumferential surface of the housing adjacent to a location where the inner circumferential surface of the housing is coupled to the stator core. The refrigerant supply groove may comprise a main groove communicating with the refrigerant supply hole and extending in a circumferential direction of the stator core; and a plurality of branched grooves extending in an axial direction from both sides of the main groove.

公开(公告)号：US11063488B2

公开(公告)日：2021-07-13

申请号：US16539069

申请日：2019-08-13

Applicant: LG Electronics Inc.

Inventor： Hojun Shin ,  Kyeonghwan Kim ,  Gyeongjae Park ,  Wonjung Sung ,  Yangsoo Lee ,  Junghyun Park ,  Junho Ahn

IPC: H02K3/40 ,  H02K1/16 ,  H02K3/12 ,  H02K3/28 ,  H02K3/34

Abstract: The present disclosure relates to a stator for an electric rotating machine, the stator comprising a stator core comprising teeth and slots, and a stator coil comprising a plurality of hairpins configured to be inserted into the slots of the stator core in a predetermined pattern. Each of the plurality of hairpins comprises a conductor and a coating layer surrounding an outer surface of the conductor. The plurality of hairpins comprise a first hairpin configured to be placed in a first section of the stator coil predetermined from an end to which power is to be input, and a second hairpin placed in a section after the first section. The first hairpin provides better insulation performance than the second hairpin, and the first section has a higher voltage distribution ratio than the section including the second hairpin.