公开(公告)号：US20240006930A1

公开(公告)日：2024-01-04

申请号：US18255773

申请日：2021-12-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tao Li ,  Zhiqiang Huang

IPC: H02J50/80 ,  H02J50/12

CPC classification number: H02J50/80 ,  H02J50/12 ,  H02J2207/20

Abstract: This application provides a wireless charging circuit and system, an electronic device, and a control method, and relates to the field of wireless charging technologies, to alleviate a problem of small charging power of an electronic device having a wireless reverse charging function. In the wireless charging circuit, a first voltage conversion circuit converts a supply voltage into a first battery voltage of a first battery, to charge the first battery. The first voltage conversion circuit further outputs the first battery voltage provided by the first battery. A second voltage conversion circuit boosts the first battery voltage. The second voltage conversion circuit includes a first boost circuit and at least one stage of switched-capacitor direct current converter that are connected in series. A first alternating current/direct current conversion circuit converts a direct current voltage output by the second voltage conversion circuit into an alternating current voltage.