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公开(公告)号:US20220085642A1
公开(公告)日:2022-03-17
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
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.