公开(公告)号：US20240133398A1

公开(公告)日：2024-04-25

申请号：US18398910

申请日：2023-12-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chaojie SHI ,  Bayaer EERHEMU ,  Chaoqiang WU ,  Shaohua WANG ,  Xiaowei XIE

IPC: F04D29/58 ,  F04D13/06 ,  H02P21/18 ,  H02P21/22 ,  H02P21/34

CPC classification number: F04D29/588 ,  F04D13/0646 ,  H02P21/18 ,  H02P21/22 ,  H02P21/34

Abstract: Embodiments of this application provide a heating control method and apparatus, an oil pump, and a heat exchange system. The method includes: in a cold state, injecting a heating current into an oil pump motor, where when the oil pump motor is not started, a torque that the heating current is capable of generating is zero, and after the oil pump motor is started, heating power of the heating current is greater than heating power of an energy-saving current, where the energy-saving current is a current capable of enabling a first motor to reach a target operating condition when oil temperature is greater than a preset temperature threshold.

公开(公告)号：US20240001777A1

公开(公告)日：2024-01-04

申请号：US18467023

申请日：2023-09-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Haojie LI ,  Chaoqiang WU ,  Mengxuan LIN

IPC: B60L50/60 ,  B60L58/27 ,  B60L58/25 ,  B60L3/00 ,  B60L50/51

CPC classification number: B60L50/60 ,  B60L58/27 ,  B60L58/25 ,  B60L3/0061 ,  B60L3/0046 ,  B60L50/51

Abstract: An electric drive system and a heating method. The electric drive system includes an inverter circuit, a direct current-direct current conversion circuit, and a controller. An input end of the inverter circuit is connected to an input end of the electric drive system, and an output end of the inverter circuit is connected to three-phase motor windings of an electric excitation synchronous motor. An input end of the direct current-direct current conversion circuit is connected to the input end of the electric drive system, and an output end of the direct current-direct current conversion circuit is connected to an excitation winding of the electric excitation synchronous motor. In this solution, a heating apparatus does not need to be disposed when the power battery pack is heated, thereby reducing costs and saving space.

公开(公告)号：US20240056013A1

公开(公告)日：2024-02-15

申请号：US18365450

申请日：2023-08-04

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Mengxuan LIN ,  Jinhua CHEN ,  Chaoqiang WU

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

CPC classification number: H02P27/06 ,  B60L50/51 ,  H02P21/22 ,  B60L2240/423 ,  B60L2210/42

Abstract: A controller for a drive motor and a related device thereof. In response to that a temperature of the power battery is greater than or equal to a preset battery temperature, the controller controls an output current of the inverter circuit, so that the drive motor outputs torque to drive a wheel. In response to that a temperature of the power battery is less than a preset battery temperature, the controller adjusts an output current of the inverter circuit based on a result of comparison between a voltage of the power battery and a preset battery voltage, to control the output current of the inverter circuit to increase heat generated by the three-phase stator winding of the drive motor. The power battery may be heated by using the heat generated by the drive motor, thereby reducing costs.

公开(公告)号：US20220256652A1

公开(公告)日：2022-08-11

申请号：US17732160

申请日：2022-04-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaowei XIE ,  Chaojie SHI ,  Chaoqiang WU

IPC: H05B1/02 ,  H02P29/40

Abstract: A heating apparatus includes: a motor control unit, having an inverter and a controller that are connected to each other; an electric heater; and a motor, having three-phase windings, where ends of the three-phase windings are connected to the inverter, the other ends of the three-phase windings are connected to a connection point, and the connection point is connected to the electric heater. Therefore, the electric heater can be controlled by using the motor control unit that controls the motor, without a need to independently dispose a control circuit for controlling the electric heater, so that a quantity of controllers, a weight of the heating apparatus, a required occupation space of the heating apparatus, and costs of the heating apparatus can be reduced.

公开(公告)号：US20240291331A1

公开(公告)日：2024-08-29

申请号：US18428271

申请日：2024-01-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chaoqiang WU ,  Hongbin LI ,  Kui JIANG

IPC: H02K1/16 ,  H02K15/02 ,  H02K15/04 ,  H02K15/06

CPC classification number: H02K1/165 ,  H02K15/026 ,  H02K15/0478 ,  H02K15/065 ,  H02K2213/03

Abstract: A stator core, a motor, and a manufacturing method of a stator. The stator core includes a plurality of groups of first silicon steel sheets and one or more groups of second silicon steel sheets, each group of first silicon steel sheets includes one or more first silicon steel sheets, the one or more first silicon steel sheets in each group of first silicon steel sheets are connected end to end to form a ring-shaped structure, the plurality of groups of first silicon steel sheets are adjacently arranged in an axial direction of the stator core, each group of second silicon steel sheets is cylindrical, and the one or more groups of second silicon steel sheets are sleeved on outer peripheral surfaces of the plurality of groups of first silicon steel sheets.

公开(公告)号：US20220368201A1

公开(公告)日：2022-11-17

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

Abstract: 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. It is quite easy to wind the flux windings on the stator core, so that a problem of difficult tapeout caused by a small volume of the motor stator is resolved.

公开(公告)号：US20220294381A1

公开(公告)日：2022-09-15

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: H02P29/62 ,  B60L58/27 ,  B60H1/02

Abstract: A method for controlling heating of a motor 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. In this way the heating target temperature value is obtained. Therefore, the quantity of heating motors can be flexibly controlled to generate sufficient heat generation power.