Lg Magna E-powertrain Co., Ltd.

Lg Electronics Inc.

Hojun Shin

Kyeonghwan Kim

Gyeongjae Park

Wonjung Sung

Junho Ahn

Yangsoo Lee

Jaemin Kim

Jeongmin Lee

Junghyun Park

Seokhwan Kim

Jongsu Kim

Hyunsoo Seol

A stator for a rotating electric machine according to one implementation of the present disclosure includes a stator core having a plurality of slots, and a stator coil formed by electrically connecting a plurality of hairpins inserted into the slots in a preset pattern, wherein the stator coil includes voltage distribution hairpins disposed in a voltage distribution section preset from an end to which power is to be input, wherein the voltage distribution hairpins include a plurality of first and protruding parts protruding from the plurality of slots and extending away from the stator core, wherein one of the plurality of first protruding parts and one of the plurality of second protruding parts are electrically coupled to form a coil pair, and wherein an insulating member is disposed between the first protruding parts and the second protruding parts to insulate between the first and second protruding parts.

Stator for rotating electric machine with overlapping hairpin coils

A stator for an electric motor according to the present disclosure includes a stator core having a plurality of slots and teeth, and a stator coil wound via the plurality of slots, wherein the stator coil includes a plurality of hairpins inserted into the plurality of slots and connected in series with one another, wherein the plurality of hairpins is spaced apart from one another by a partial discharge suppression distance to suppress partial discharge between adjacent hairpins, wherein a partial discharge suppression distance between hairpins with a high voltage distribution ratio is farther than a partial discharge suppression distance between hairpins with a low voltage distribution ratio when power is applied to the stator coil. This may result in suppressing reduction of lifespan of the stator coil due to the partial discharge of the hairpins.

Stator for electric motor

Disclosed herein are a stator and a method for manufacturing the same. The stator according to embodiments of the present disclosure includes an insulating part and a plurality of stator coils each having two ends electrically connected to form one joint portion. The insulating part is configured to cover at least respective parts of the joint portions, and to provide a distance between neighboring joint portions. Accordingly, a partial discharge caused by a surge between the joint portions of the stator coils may be prevented, allowing operational reliability of the stator to be increased.

Stator and method for manufacturing the same

The present disclosure provides 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 comprises a stator core, and a stator coil comprising hairpins. Each hairpin comprises a conductor, a film surrounding the conductor, a pair of insertion parts configured to be inserted into different slots, and a connection part connecting the insertion parts. The connection part comprises first and second bending parts bent with a predetermined radius of curvature such that the pair of insertion parts are insertable into different layers. The hairpins include first and second hairpins, each of the first and second hairpins configured to protrude from one end of the stator core by different protrusion lengths. Each of the first and second hairpins comprises a region configured to cross each other.

Stator of electric rotating machine, hairpin of stator of electric rotating machine and manufacturing method thereof

The present disclosure provides a motor configured to receive driving power from a connector including power terminals. The motor comprises a housing, a terminal block disposed inside the housing, and at least one terminal located adjacent to the terminal block. The power terminals are configured to penetrate through the terminal block, and the at least one terminal is configured to be brought into contact with the power terminal according to a movement of the connector when hairpin coils are inserted in the connector, such that the driving power is applied to the hairpin coils via the power terminal.

Motor

A motor includes a rotor assembly and a stator. The rotor assembly includes a rotatable shaft extending in an axial direction, a rotor core coupled to the rotatable shaft and having a plurality of holes penetrating through the rotor core in the axial direction, a first end ring coupled to one end of the rotor core and configured to guide oil supplied to the rotor assembly into the plurality of holes, and a second end ring coupled to the opposite end of the rotor core and configured to guide oil passing through the plurality of holes in a radial direction.

The embodiments of the present disclosure provide a shaft structure of a motor, comprising a housing, a stator disposed inside the housing, and a rotor rotatably disposed inside the stator. The stator may comprise a stator core and a coil wound around the stator core, and the rotor may comprise a rotor core and a rotational shaft coupled to the rotor core. The rotational shaft may comprise a plurality of adjusting portions formed on an outer circumferential surface of the rotational shaft to align a center of gravity of the rotor with a center of the rotational shaft.

Shaft structure with adjustment portions for alignment with rotor center of gravity

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.

Growing community of inventors

Seoul, South Korea

Hojun Shin