公开(公告)号：US11637442B2

公开(公告)日：2023-04-25

申请号：US17535356

申请日：2021-11-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Baoshan Wu ,  Yunpeng Yang ,  Chengliang Zhang ,  Bing Cai ,  Donghao Wu

IPC: H02J7/00 ,  H02J7/04 ,  H02J50/12

Abstract: A wirelessly charged electronic device, a wireless charging method, and a wireless charging system are disclosed. A charger of a receive end of the system includes an open-loop DC-DC (direct current-to-direct current) converter. When power of a transmit end is greater than a first preset threshold of the transmit end and required charging power is greater than a first preset threshold of a receive end, the open-loop DC-DC converter is controlled to work in a fast charging phase, specifically including: controlling the open-loop DC-DC converter to work in a constant current step-down phase to charge a battery at a constant current, or controlling the open-loop DC-DC converter to work in a constant voltage step-down phase to charge the battery at a constant voltage.

公开(公告)号：US12051912B2

公开(公告)日：2024-07-30

申请号：US17853286

申请日：2022-06-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Donghao Wu ,  Baoshan Wu ,  Chengliang Zhang

IPC: H02J50/12

CPC classification number: H02J50/12

Abstract: This application provides a wireless power transmission system. The system includes a transmitter and a receiver, where the transmitter includes a DC/AC inverter circuit, a first resonant inductor, a first capacitor, and a first compensation inductor that are connected in series; and the receiver includes an AC/DC rectifier circuit, a second resonant inductor, a second capacitor, and a second compensation inductor that are connected in series; and power at the transmitter is transmitted to the receiver through electromagnetic induction between the first resonant inductor and the second resonant inductor, and the AC/DC rectifier circuit is configured to provide the rectified power to a load of the receiver. This solution is applicable to a wireless power supply scenario or a wireless charging scenario.