WIRELESS POWER RECEIVER

摘要

PURPOSE: A wireless power receiver is provided to change impedance according to the change of charged capacity and to improve the efficiency of wireless charging. CONSTITUTION: A power receiver(301) wirelessly receives driving power from a wireless power transmitter. A rectifier(303) rectifies the driving power to make direct current. A load part(307) stores the driving power outputted from the rectifier. A control unit(311) regulates the amount of the driving power outputted to the load part. An impedance control part controls the impedance of the power receiver. [Reference numerals] (301) Power receiver; (303) Rectifier; (305) Switch part; (307) Load part; (309) Matching part; (311) Control unit