| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress decline of power transmission efficiency due to displacement between center axes of a power transmission coil and a power reception coil when transmitting power wirelessly by utilizing magnetic field resonance. <P>SOLUTION: From a power transmission coil 1 including a resonance coil to a power reception coil 2 including a resonance coil, power is transmitted using magnetic field resonance at a prescribed resonance frequency. An inclination angle θ is defined as an angle formed by a center axis of the power transmission coil or the power reception coil to a coil center connecting line 7 defined as a straight line passing through a coil center of the power transmission coil and a coil center of the power reception coil, and when there is a displacement amount defined as a distance between a center axis 5 of the power reception coil and a coil center 4 of the power transmission coil or a distance between a center axis 3 of the power transmission coil and a coil center 6 of the power reception coil, the direction of the center axis of at least one of the power transmission coil and the power reception coil is adjusted in the direction of reducing the inclination angle θ. <P>COPYRIGHT: (C)2013,JPO&INPIT |
