| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology for enhancing power transmission efficiency in wireless power transmission. <P>SOLUTION: In the wireless power transmission system including a power transmission device and a power reception device, the power transmission device has a power transmission side electromagnetic induction coil to which high frequency power is supplied from a high frequency power supply, and a power transmission side resonance coil which receives power from the power transmission side electromagnetic induction coil by electromagnetic induction. The power reception device has a power reception side resonance coil which receives power from the power transmission side resonance coil by magnetic field resonance, and a power reception side electromagnetic induction coil which receives power from the power reception side resonance coil by electromagnetic induction and is connected electrically with a load resistor. The power transmission side resonance coil and the power reception side resonance coil are wound spirally in multilayer, and the parts surrounding in the lamination planes adjoining in the lamination direction of the coil are arranged in zigzag. <P>COPYRIGHT: (C)2012,JPO&INPIT |
