公开(公告)号：US20230070930A1

公开(公告)日：2023-03-09

申请号：US17987290

申请日：2022-11-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shida Gu ,  Wei Zhang ,  Yang Cheng ,  Zhaoxue Cui

IPC: B60L53/22 ,  H02J7/06 ,  H02M1/42 ,  H02M3/335 ,  H02M7/219

Abstract: A charging circuit of an on-board charger, where a second end of a first power conversion circuit of the charging circuit is coupled to a first end of a second power conversion circuit, a high-voltage output end of the second power conversion circuit charges a power battery pack of an electric vehicle, and a first low-voltage output end of the second power conversion circuit supplies power to a low-voltage system of the electric vehicle. The first power conversion circuit is configured to, when the electric vehicle is in a charging mode, convert an alternating current input from a first end of the first power conversion circuit into a direct current and transmit the direct current to the first end of the second power conversion circuit.