ELECTRONIC DEVICE, METHOD AND SYSTEM FOR WIRELESS CHARGING

This application discloses a wirelessly charged electronic device, a wireless charging method, and a wireless charging system. A charger of a receive end of the system includes an open-loop DC-DC 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. Compared with the conventional technology, in the technical solutions of this application, charging is effectively controlled based on a power capability of the transmit end, to improve wireless charging efficiency of the receive end, improve working efficiency of the transmit end, fully utilize the power capability of the transmit end, and also improve charging stability.