Patent ID: 9705339
Date: 2017-07-11
CPC Classifications: G01S,H02J,H04B

Claim:
1. A method for wireless power supply in which power is supplied wirelessly from a power transmission antenna to a power reception antenna, the power transmission antenna including a plurality of power transmission antenna elements, and the power reception antenna including a plurality of power reception antenna elements wherein a power transmission surface of the power transmission antenna and a power reception surface of the power reception antenna are parallel and opposite to each other, and a reflector is provided outside the power reception surface and inwardly inclined at a predetermined angle with respect to the power reception surface, wherein the method includes a misalignment correction operation prior to a wireless power supply operation, and during the misalignment correction operation, the method comprises: allowing at least two, of the plurality of power transmission antenna elements, disposed at periphery of the power transmission surface of the power transmission antenna to function as position-detection power transmission antennas, and allowing antenna elements, of the plurality of power transmission antenna elements, disposed inside the position-detection power transmission antennas on the power transmission surface to function as position-detection power reception antennas; radiating an electromagnetic wave from the position-detection power transmission antennas to the power reception antenna; calculating electric power of the electromagnetic wave reflected by the reflector and then received by the position-detection power reception antennas; detecting a positional relation between the power transmission antenna and the power reception antenna based on the calculated electric power; and correcting a relative position between the power transmission antenna and the power reception antenna based on the detected positional relation.