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Title:
HAIRPIN MOTOR, POWER ASSEMBLY, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/077498
Kind Code:
A1
Abstract:
A hairpin motor, a power assembly, and a vehicle; the hairpin motor comprises a stator and a rotor; the stator comprises a stator winding and a stator core; the stator winding comprises a first phase winding, a second phase winding, and a third phase winding; each phase winding comprises at least one parallel branch circuit, the parallel branch circuits are distributed uniformly and symmetrically, and each parallel branch circuit comprises at least two parallel sub-branch circuits distributed uniformly and symmetrically; the inner wall of the stator core is provided with a plurality of grooves, the plurality of grooves are arranged in an axial direction around the central axis of the stator core and extend in the axial direction of the central axis, and hairpin conductors of the parallel sub-branch circuits are stacked in the grooves. In this way, by combining the parallel branch circuits distributed uniformly and symmetrically with parallel sub-branch circuits of the parallel branch circuits distributed uniformly and symmetrically, balancing of potentials of the three phase windings is well achieved, the generation of circular current of the motor is suppressed or eliminated, and temperature rise of the motor is well alleviated, increasing the working efficiency of the motor.

Inventors:
WANG YU (CN)
CHEN JIAN (CN)
YIN LINPENG (CN)
EERHEMU BAYAER (CN)
WAN YONGJIAN (CN)
Application Number:
PCT/CN2020/121679
Publication Date:
April 21, 2022
Filing Date:
October 16, 2020
Export Citation:
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Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02K1/16
Foreign References:
CN111355316A2020-06-30
CN110829641A2020-02-21
CN111355317A2020-06-30
CN107546877A2018-01-05
JP2020150679A2020-09-17
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