公开(公告)号：US12172532B2

公开(公告)日：2024-12-24

申请号：US17666800

申请日：2022-02-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaode Yin ,  Shaohua Wang ,  Jinhua Chen

IPC: B60L50/61 ,  H02M1/42

Abstract: An electrically excited motor drive system is integrated with an on-board charger (OBC), so that a power supply circuit that is in an electric vehicle and that is configured to drive an electrically excited motor can be integrated with an OBC of a dual active bridge (DAB) type. When a control component controls a switch circuit, the electrically excited motor drive system obtained after integration can separately implement a function of the power supply circuit or a function of the charging circuit in different working modes. In addition, when the electrically excited motor drive system is in different working modes, some circuits are further reused through time division. This addresses a problem that the power supply circuit cannot be integrated with the OBC of the DAB type, to reduce circuit complexity and costs of the electric vehicle.

公开(公告)号：US20220399787A1

公开(公告)日：2022-12-15

申请号：US17891272

申请日：2022-08-19

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhengyi Tang ,  Xueyu Mei ,  Bayaer Eerhemu ,  Jinhua Chen

IPC: H02K11/028 ,  H02K11/33

Abstract: A drive motor and a retarder in a powertrain meet a condition that a harmonic order of the drive motor is the same as a quantity of gear teeth of an input shaft gear in the retarder such that a frequency of an electromagnetic noise harmonic generated by the drive motor is the same as a frequency of a noise harmonic generated by the retarder. When the drive motor and the retarder are coupled using a connection structure, a phase of the electromagnetic noise harmonic generated by the drive motor differs from a phase of the noise harmonic generated by the retarder by a set angle.

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.

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

IPC: H02K1/24 ,  H02K1/26 ,  H02K1/28 ,  H02K3/487 ,  H02K7/00

CPC classification number: H02K1/24 ,  H02K1/265 ,  H02K1/28 ,  H02K3/487 ,  H02K7/006 ,  H02K2213/03

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.

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.

公开(公告)号：US12095319B2

公开(公告)日：2024-09-17

申请号：US17878637

申请日：2022-08-01

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Chaojie Shi ,  Chaoqiang Wu ,  Jinhua Chen

IPC: H02K21/04

CPC classification number: H02K21/046

Abstract: The present disclosure describes a motor stator, in which a flux winding is bent into a wave shape, and may be divided into a plurality of first parts, a plurality of second parts, and a plurality of third parts based on winding positions on a stator core. In a process of embedding flux windings into stator slots on the stator core, the flux windings may be directly sunk into the stator slots one by one, so that the second part is embedded into the stator slot, the first part is located on an outer surface of the stator core, and the third part is located on an inner surface of the stator core.

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

IPC: H02K9/14 ,  H02K1/12 ,  H02K1/26

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.