Abstract: A wireless charger includes a base, a first transmitter, a driver circuit, a controller and an energy radiation member. The first transmitter coil is fixed in the base. The driver circuit is disposed in the base. The controller is disposed in the base and connected to the driver circuit. The energy radiation member is detachable from the base and connected to the base through a wire, and the energy radiation member comprises a second transmitter coil. In the case that the energy radiation member and the base are in a separated state, the driver circuit drives, under control of a control signal from the controller, the first transmitter coil and the second transmitter coil to operate.

Abstract: A wireless charging receiving device, wireless charging method and system, and terminal device are provided. The device includes a control unit, receiving coil, rectifier-filter unit, first voltage conversion unit and battery cell module. The control unit transmits a first control signal to a wireless charging transmitting device and outputs a second control signal to the first voltage conversion unit if the wireless charging transmitting device is of a model belonging to a first preset model set and an output voltage of the battery cell module is within a preset range. The receiving coil senses a first electromagnetic wave to generate a first AC. The rectifier-filter unit converts the first AC into a first DC. The first voltage conversion unit converts the first DC into a second DC under the control of the second control signal. The battery cell module is charged by the second DC.

Abstract: A wireless charging receiving device, wireless charging method and system, and terminal device are provided. The device includes a control unit, receiving coil, rectifier-filter unit, first voltage conversion unit and battery cell module. The control unit transmits a first control signal to a wireless charging transmitting device and outputs a second control signal to the first voltage conversion unit if the wireless charging transmitting device is of a model belonging to a first preset model set and an output voltage of the battery cell module is within a preset range. The receiving coil senses a first electromagnetic wave to generate a first AC. The rectifier-filter unit converts the first AC into a first DC. The first voltage conversion unit converts the first DC into a second DC under the control of the second control signal. The battery cell module is charged by the second DC.