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：US11982214B2

公开(公告)日：2024-05-14

申请号：US18323259

申请日：2023-05-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiangang Wang ,  Chaoqiang Wu ,  Hongbing Liu ,  Jun Chen ,  Hu Zhong

IPC: F01M1/16 ,  F01M1/02 ,  F01M11/00 ,  F16D57/06

CPC classification number: F01M1/16 ,  F01M1/02 ,  F01M11/0004 ,  F16D57/06

Abstract: An oil inlet of a motor communicates with a first end of an oil pump through a first passage. A first oil sump of the motor communicates with a second end of the oil pump through a second passage. When the oil pump is rotating, a port at the first end is an oil outlet of the oil pump, and a port at the second end is an oil inlet of the oil pump. The first end of the oil pump communicates with a second oil sump through a third passage with a first valve. The second end of the oil pump communicates with the second oil sump through a fourth passage with a second valve. In this way, when the oil pump is reversing, coolant may be input into a motor cavity and accumulate in the motor cavity, so as to cool motor components in an immersion manner.

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：US20240001776A1

公开(公告)日：2024-01-04

申请号：US18361652

申请日：2023-07-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chaojie Shi ,  Chaoqiang Wu ,  Shankai Chen

IPC: B60L50/51 ,  H02P27/06 ,  H02P21/22 ,  B60L15/00

CPC classification number: B60L50/51 ,  H02P27/06 ,  B60L2210/42 ,  B60L15/007 ,  H02P21/22

Abstract: This application discloses a motor control unit, a power train, a control method, and an electric vehicle, and relates to the field of electric vehicle technologies. An input end of the motor control unit connects to a power battery pack, an output end of the motor control unit connects to three phases of motor windings of a motor, and the motor control unit includes an inverter circuit and a controller. The controller is configured to control the inverter circuit to simultaneously output currents to the three phases of motor windings, and control the currents input to all the phases of motor windings to sequentially reach a preset current.

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：US12040731B2

公开(公告)日：2024-07-16

申请号：US17828930

申请日：2022-05-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chaoqiang Wu ,  Mengxuan Lin ,  Haojie Li

IPC: H02K5/173 ,  B60H1/02 ,  B60L58/27 ,  H02P29/62

CPC classification number: H02P29/62 ,  B60H1/02 ,  B60L58/27

Abstract: A method for controlling heating of a motor and a related controller are provided. The method includes: obtaining a heating target temperature value; determining, based on the heating target temperature value, a heating motor that needs to generate heat from a plurality of motors of a multi-motor drive system and heat generation power of the heating motor; and sending a first control instruction to the heating motor. The first control instruction is used to respectively input harmonic currents to three phases of windings of the motor, so that the heating motor generates heat based on the heat generation power. According to the application, the heating target temperature value is obtained, and the quantity of heating motors can be flexibly controlled to generate sufficient heat generation power.

公开(公告)号：US20230406156A1

公开(公告)日：2023-12-21

申请号：US18460062

申请日：2023-09-01

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chaoqiang Wu ,  Mengxuan Lin ,  Chaojie Shi

IPC: B60L58/27 ,  H02P29/62 ,  H01M10/615 ,  H01M10/625 ,  H01M10/656

CPC classification number: B60L58/27 ,  H02P29/62 ,  H01M10/615 ,  H01M10/625 ,  H01M10/656 ,  H02P2207/01 ,  H01M2220/20 ,  B60L2250/00 ,  B60L2240/545

Abstract: A method for processing an asynchronous motor includes obtaining indication trigger information; and injecting, in response to the indication trigger information, a first current into a stator winding of the asynchronous motor, where the first current is for generating heat without a torque for the asynchronous motor, and the heat heats a battery pack through a heat exchanger.

公开(公告)号：US20230296038A1

公开(公告)日：2023-09-21

申请号：US18323259

申请日：2023-05-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiangang Wang ,  Chaoqiang Wu ,  Hongbing Liu ,  Jun Chen ,  Hu Zhong

IPC: F01M1/16 ,  F01M1/02 ,  F01M11/00 ,  F16D57/06

CPC classification number: F01M1/16 ,  F01M1/02 ,  F01M11/0004 ,  F16D57/06

Abstract: An oil inlet of a motor communicates with a first end of an oil pump through a first passage. A first oil sump of the motor communicates with a second end of the oil pump through a second passage. When the oil pump is rotating, a port at the first end is an oil outlet of the oil pump, and a port at the second end is an oil inlet of the oil pump. The first end of the oil pump communicates with a second oil sump through a third passage with a first valve. The second end of the oil pump communicates with the second oil sump through a fourth passage with a second valve. In this way, when the oil pump is reversing, coolant may be input into a motor cavity and accumulate in the motor cavity, so as to cool motor components in an immersion manner.

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.