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公开(公告)号：US20240120784A1
公开(公告)日：2024-04-11
申请号：US18393757
申请日：2023-12-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hua Lan , Zhao Zhou , Jinhua Chen
Abstract: Embodiments of the present disclosure provide a rotor, a motor, a powertrain, and a vehicle. The rotor includes wedges and pole shoes. The wedges fit the pole shoes through curved portions. The curved portions can effectively relieve stress concentration of joint portions, increase strength of the wedges and the pole shoes, and effectively increase effective winding space of slots in the rotor. In this way, power density of a motor in which the rotor is used is increased.
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Patent Agency Ranking
公开(公告)号：US20240097513A1
公开(公告)日：2024-03-21
申请号：US18521906
申请日：2023-11-28
Applicant: Huawei Digital Power Technologies Co., Ltd. , Nanjing University of Science and Technology
Inventor： Weiwei Geng , Chaoqiang Wu , Jinhua Chen , Zhao Zhou
IPC: H02K1/2798 , H02K1/28 , H02K21/24
CPC classification number: H02K1/2798 , H02K1/28 , H02K21/24
Abstract: This application relates to the field of motor technologies, and provides a motor rotor, a drive motor, and an electric vehicle. In the motor rotor, a rotor core with at least two protruding components is designed. At least two magnetic steels and at least two sheets are disposed in grooves between the at least two protruding components and then coupled to the rotor core with a rotor pressing plate. In addition, one SMC sheet is stacked on each of the magnetic steels, so that an eddy current loss of a permanent magnet can be effectively reduced. Each of the magnetic steels is disposed in a groove between protruding components, and the SMC sheet is added, so that a saliency ratio is increased, a reluctance torque ratio is increased, and a quantity of magnetic steels for use is reduced.
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公开(公告)号：US12301082B2
公开(公告)日：2025-05-13
申请号：US17944424
申请日：2022-09-14
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Qiqi Guo , Yu Wang , Zhao Zhou , Yang Zheng
Abstract: A stator includes a stator core and a stator winding. An inner wall of the stator core is provided with M winding slots, the M winding slots are uniformly disposed in a circumferential direction of the inner wall of the stator core. The stator winding includes flat wire conductors inserted in the winding slots, N layers of flat wire conductors are disposed in any one of the winding slots, and phase units of a first-phase winding, phase units of a second-phase winding, and phase units of a third-phase winding are sequentially and periodically arranged along the inner wall of the stator core. Each phase winding includes P parallel branches. Any one of the parallel branches connects flat wire conductors of M·N/3P layers.
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公开(公告)号：US20240039350A1
公开(公告)日：2024-02-01
申请号：US18477314
申请日：2023-09-28
Applicant: Huawei Digital Power Technologies Co., Ltd. , Nanjing University of Science and Technology
Inventor： Weiwei Geng , Chaoqiang Wu , Jinhua Chen , Zhao Zhou
IPC: H02K1/2795 , H02K21/24 , B60K1/00
CPC classification number: H02K1/2795 , H02K21/24 , B60K1/00 , B60L50/60
Abstract: A motor rotor, a motor, and an electric vehicle are disclosed. The motor rotor includes an iron core yoke, a spoke plate, and at least two permanent magnets. The at least two permanent magnets are fastened to the iron core yoke and sequentially spaced apart in the circumferential direction. The spoke plate is located between adjacent permanent magnets. A quadrature-axis magnetic circuit is reserved between adjacent permanent magnets, and the spoke plate whose reluctance is less than that of air or the permanent magnet material is disposed on the quadrature-axis magnetic circuit, that is, the spoke plate is disposed between the adjacent permanent magnets. In this way, reluctance of the quadrature-axis magnetic circuit may be reduced, and quadrature-axis inductance may be increased. Accordingly, a reluctance torque is increased, and a torque output capability of the motor is improved.
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公开(公告)号：US20240088731A1
公开(公告)日：2024-03-14
申请号：US18463608
申请日：2023-09-08
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhao Zhou , Chaojie Shi , Chuanping Liu
Abstract: An axial motor includes a fastening plate and a plurality of magnetic cores. The plurality of magnetic cores are spaced apart around the inner shaft sleeve. A magnetic core end part of the magnetic core covers a part of an end surface of a magnetic core winding part of the magnetic core, and an end surface, of the magnetic core winding part, that is not covered by the magnetic core end part forms a step surface. The fastening plate is fastened to an end surface of the inner shaft sleeve. The fastening plate includes an accommodating groove that is concave relative to the end surface of the inner shaft sleeve. A plurality of magnetic core accommodating holes are provided in the accommodating groove. The plurality of magnetic core accommodating holes respectively correspond to magnetic core end parts that accommodate the plurality of magnetic cores.
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公开(公告)号：US20230077647A1
公开(公告)日：2023-03-16
申请号：US17990113
申请日：2022-11-18
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jinhua Chen , Chaoqiang Wu , Zhao Zhou , Jianxin Huang , Shaohua Wang
Abstract: A motor rotor includes a wound rotor comprising a rotating shaft, a rotor core, and a plurality of rotor coils. The rotor core is fixedly sleeved on the rotating shaft, a plurality of winding holes surrounding the rotating shaft are provided at intervals on the rotor core, each winding hole penetrates through two ends that are of the rotor core and that are disposed in an axial direction, each rotor coil is wound on hole walls of two adjacent winding holes, and two adjacent rotor coils share one winding hole. A gap is formed between two adjacent rotor coils, a first shaft hole is formed on the rotating shaft, the gap is configured as a first heat dissipation channel connected to the first shaft hole, and the first heat dissipation channel is used for inflow of coolant in the rotating shaft.
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