Abstract:
A wireless power transmitter is disclosed. The wireless power transmitter, which is capable of charging a plurality of wireless power receivers, includes: a plurality of coil cells; a main half-bridge inverter to which a main pulse signal is applied; a plurality of sub half-bridge inverters to which a first sub pulse signal or second sub pulse signal is applied; a current sensor that monitors the current through the coil cells; and a communications and control unit that controls the pulse signals applied to the main half-bridge inverter and sub half-bridge inverters and that communicates with the wireless power receivers, wherein the sub half-bridge inverters may be respectively connected to the coil cells.
Abstract:
The present disclosure relates to a wireless power transmission method, a wireless power transmission apparatus, and a wireless charging system in a wireless power transmission field, and there is provided a communication method of a wireless power transmitter capable of the transmission of power in a wireless manner, and the communication method may include receiving communication information indicating whether or not a second communication mode is available using a first communication mode from a wireless power receiver, determining whether or not communication in a second communication mode is available using the communication information, notifying either one of the first communication mode and second communication mode to the wireless power receiver based on the determination result, and performing communication with the wireless power receiver using a communication mode notified to the wireless power receiver.
Abstract:
According to an embodiment of the present invention, a wireless power transmitter comprises a base station configured to supply power to a portable electronic device, a coil formed in a manner of winding a wire and configured to convert a current into a magnetic flux, and a shielding unit configured to shield the base station from a magnetic field generated in the coil, wherein the coil has a triangular shape and is formed into a single layer.