公开(公告)号：US12065045B2

公开(公告)日：2024-08-20

申请号：US17872147

申请日：2022-07-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Quanxi Lin ,  Tong Wang ,  Hong Tuo

IPC: B60L50/52 ,  B60L50/60 ,  H02M3/158

CPC classification number: B60L50/52 ,  B60L50/60 ,  H02M3/158 ,  B60L2210/10 ,  B60L2240/527

Abstract: A vehicle-mounted power supply system includes a sampling circuit, a voltage comparison control circuit, a power conversion circuit, and a motor. The sampling circuit is configured to obtain an output voltage value of an output terminal of the power conversion circuit. The voltage comparison control circuit is configured to output a first power adjustment signal to the power conversion circuit when the output voltage value is less than a first target voltage value. The power conversion circuit is configured to increase an output voltage to a first target voltage based on the first power adjustment signal, to output the output voltage to the motor and increase an input voltage of the motor. When a voltage of a power supply is low, the input voltage of the motor can be maintained at a required level.