Wireless Power Supply Device, Wireless Power Receiving Device and Wireless Power Transmission System

Abstract

A wireless power supply device including a power supply coil for wirelessly transmitting electric power to a power receiving device, a driving circuit for outputting pulse electric power for driving the power supply coil at the resonance frequency of the power receiving device to the power supply coil, a first radio module for receiving rectified voltage information about rectified voltage generated in the power receiving device via a radio communication path, and a control circuit for generating a driving control signal on the basis of the rectified voltage information received by the first radio module, thereby to control the driving circuit.

Dependencies are inferred from the claim text.