Patent ID: 9742202
Date: 2017-08-22
CPC Classifications: B60L,B63H,B63J,H02J,Y02T

Claim:
1. A power-supplying device configured to supply electric power to a ship having a power-receiving structure, the power-receiving structure provided in a ship, comprising: a power-receiving coil capable of wirelessly receiving electric power from a power-supplying coil on a land-side; and an outer wall surface-forming section forming an outer surface of side of the ship, wherein the power-receiving coil is provided on an inside of the ship from the outer wall surface-forming section, and an electromagnetic field-transmissive section formed of a material through which an electromagnetic field propagates is provided in an opposing portion to the power-receiving coil in the outer wall surface-forming section, the power-supplying device comprising: a power-supplying coil, provided on a land-side, configured to supply electric power to the power-receiving coil through the electromagnetic field-transmissive section; a supply power measuring section configured to measure electric power supplied to the power-supplying coil; a receiving section configured to receive, from a ship-side, a measured value of electric power received from the power-supplying coil by the power-receiving coil; an efficiency calculating section configured to calculate a plurality of times an average value of efficiency of electric power transmission from the power-supplying coil to the power-receiving coil based on the supplied electric power measured by the supply power measuring section and the measured value of the electric power received by the receiving section; a moving device, provided on the land-side, configured to move the power-supplying coil; and a control device configured to control the moving device to move the power-supplying coil based on the average value calculated by the efficiency calculating section, thereby adjusting a position of the power-supplying coil with respect to the power-receiving coil.