STATOR CORE, ELECTRIC MOTOR, POWER ASSEMBLY, AUTOMOBILE AND VEHICLE

WIPO Patent Application WO/2022/257507

A1

A stator core, an electric motor, a power assembly, an automobile, and a vehicle. The electric motor comprises: a housing; a stator core, which is fixed in the housing, a crack flow channel being formed between the outer side wall of the stator core and the inner side wall of the housing, and the crack flow channel being configured as a mesh cooling flow channel for a cooling fluid to flow; a stator winding, which is mounted on the stator core; and a rotor, which is rotatably sleeved on the inner side of the stator core. Compared to the solution of only a plurality of axial oil grooves being provided in the outer side wall of a stator core, the mesh cooling flow channel of the present solution has a larger heat dissipation surface area, thereby helping to further increase the heat dissipation capabilities of an electric motor. Moreover, the flow path of the cooling fluid in the mesh cooling flow channel is also mesh, the flow form of the cooling fluid in the mesh path is turbulent flow, and the heat exchange efficiency of the turbulent flow is high, so that the heat dissipation capabilities of the electric motor can also be further improved.

WANG YIN (CN)
XU ZHANGLU (CN)
WANG ZHEN (CN)
FANG LIANG (CN)
HAN TAO (CN)
TAN YANJUN (CN)
LIN XIAOZHE (CN)
WANG RUIPING (CN)
SCHOLTEN INGO (CN)

PCT/CN2022/078079

December 15, 2022

February 25, 2022

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GEELY HOLDING GROUP CO LTD (CN)
WUXI INFIMOTION TECH CO LTD (CN)

H02K1/20; H02K5/20; H02K9/19; H02K9/193; H02K9/22

WO2014032876A2

2014-03-06

CN215733714U	2022-02-01
CN101232211A	2008-07-30
CN110492663A	2019-11-22
CN112104115A	2020-12-18
US5491371A	1996-02-13
US20190157922A1	2019-05-23

See also references of EP 4125184A4

AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)

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