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：US20220212548A1

公开(公告)日：2022-07-07

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：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.