公开(公告)号：US20240283385A1

公开(公告)日：2024-08-22

申请号：US18650766

申请日：2024-04-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ying Li ,  Chaojie Shi ,  Ningbo Feng ,  Zhenxing Chen ,  Xian Luo

IPC: H02P27/08 ,  B60L50/60 ,  B60L58/12 ,  H02J7/24 ,  H02P27/12

CPC classification number: H02P27/085 ,  B60L50/60 ,  B60L58/12 ,  H02J7/2434 ,  H02P27/12 ,  B60L2240/12

Abstract: This application provides a motor drive system, a vehicle, a charging method, a control apparatus, and a medium, to improve motor performance in a vehicle charging process. The motor drive system may include a plurality of bridge arms, a motor, and a control module. The motor includes a plurality of windings. A second end of a first switch in a first bridge arm in the plurality of bridge arms is coupled to a first electrode of a power supply, and a second electrode of the power supply is coupled to a power battery. The control module is configured to: obtain a rotor position angle of the motor; and control a bridge arm other than the first bridge arm in the plurality of bridge arms in a control manner corresponding to the rotor position angle, to enable the power supply to charge the power battery.

公开(公告)号：US20240383348A1

公开(公告)日：2024-11-21

申请号：US18789500

申请日：2024-07-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ningbo Feng ,  Ying Li ,  Maojie Ren

IPC: B60L53/122 ,  B60L53/24 ,  H02J7/00

Abstract: This disclosure provides a control method and apparatus for a power supply circuit, and an electric vehicle. The power supply circuit includes a first switch, three bridge arms, and a motor. Each bridge arm includes a first switching transistor and a second switching transistor. The control method is: when detecting that the direct current power supply stops supplying power, controlling the first switch to be turned off; after the first switch is turned off, controlling a second switching transistor of a first bridge arm, a first switching transistor of a second bridge arm among the bridge arms, and a first switching transistor of a third bridge arm among the bridge arms to be turned on, and providing, by the power battery, a first current to the motor, where the first current controls a torque of the motor. This disclosure is implemented to improve NVH characteristics of the electric vehicle.