Patent ID: 9520725
Filing Date: 2016-12-13
CPC Classification: H02J

Claim Text:
1. A wireless power transfer system comprising: a power receiving device that receives transmission by wireless power transfer; a transmission device that has a transmission element that transmits transmission power to the power receiving device, the transmission device having a control mechanism that controls an oriented direction of the transmission element; a positioning device that is connected communicably with the transmission device, the positioning device receiving with a plurality of antennas arranged adjacent to each other a positioning signal that is a wireless signal transmitted from the power receiving device, the positioning device having a positioning function that calculates a direction α in which the power receiving device exists when seen from the positioning device itself and a position of the power receiving device, based on a phase difference between the received positioning signals, wherein the transmission device the power receiving device transmits to the transmission device a power value that is currently being supplied from the transmission device, the transmission device