公开(公告)号：EP3672035A1

公开(公告)日：2020-06-24

申请号：EP19213879.0

申请日：2019-12-05

Applicant: LG Electronics Inc.

Inventor： KIM, Kyeonghwan ,  SUNG, Wonjung ,  PARK, Gyeongjae ,  SHIN, Hojun ,  AHN, Junho ,  LEE, Yangsoo ,  KIM, Jongsu

IPC: H02K9/19 ,  H02K1/20 ,  H02K5/173 ,  H02K5/20 ,  H02K1/27

Abstract: A motor includes a rotor assembly including a rotating shaft extending in one direction, a rotor core coupled to the rotating shaft and having a plurality of holes penetrated in one direction, a first end ring coupled to one end of the rotor core and guiding oil supplied to the rotor assembly to the plurality of holes, and a second end ring coupled to the other end of the rotor core and guiding oil passing through the plurality of holes in a radial direction. Accordingly, oil may flow into the rotor to improve a cooling effect of the rotor assembly by the oil.

公开(公告)号：EP3678283A1

公开(公告)日：2020-07-08

申请号：EP19189555.6

申请日：2019-08-01

Applicant: LG ELECTRONICS INC.

Inventor： SHIN, Hojun ,  KIM, Kyeonghwan ,  PARK, Gyeongjae ,  SUNG, Wonjung ,  LEE, Yangsoo ,  PARK, Junghyun ,  AHN, Junho

IPC: H02K3/12 ,  H02K3/30 ,  H02K3/34 ,  H02K3/40

Abstract: The present disclosure relates to a stator for an electric rotating machine, and the stator may include a stator core having teeth and slots; and a stator coil formed by connecting a plurality of hairpins to be inserted into the slots in a predetermined pattern, wherein each of the plurality of hairpins includes a conductor and a coating layer formed to surround an outer surface of the conductor, and the stator coil includues a first hairpin placed in a preset first section from an end to which power is to be input and a second hairpin placed in a second section after the first section, and the first hairpin has better insulation performance than the second hairpin. Thus, insulation performance may be ensured to suppress occurrence of partial discharge.

公开(公告)号：EP3678282A1

公开(公告)日：2020-07-08

申请号：EP19183807.7

申请日：2019-07-02

Applicant: LG ELECTRONICS INC.

Inventor： SUNG, Wonjung ,  LEE, Yangsoo ,  SHIN, Hojun ,  KIM, Kyeonghwan ,  PARK, Gyeongjae ,  AHN, Junho

IPC: H02K3/12 ,  H02K15/12 ,  H02K3/32

Abstract: Provided are a stator of an electric rotating machine, a hairpin of a stator of an electric rotating machine, and a manufacturing method thereof. The stator for the electric rotating machine includes a stator core; and a stator coil having a plurality of hairpins, wherein each of the hairpins has a conductor and a film surrounding the conductor, each of the hairpins has a pair of insertion parts to be inserted into different slots and a connection part for connecting the insertion parts, the connection part has a first bending part and a second bending part bent with a predetermined radius of curvature so that the pair of insertion parts are insertable into different layers, and the hairpins have a first hairpin and a second hairpin protruding from one end of the stator core by different protrusion lengths, the first hairpin and the second hairpin having one regions disposed to cross each other. As a result, it is possible to improve insulation performance of an inter-phase crossing region of the stator coil.