| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless power transmission device capable of enhancing a Q-value in a power supply part so as to enhance a power transmission efficiency as a result, and reducing unwanted radiation in a power receiving part to the periphery and electromagnetic influences from the periphery.SOLUTION: A wireless power transmission device 1 comprises a power supply part 10 and a power receiving part 20. The power supply part 10 and the power receiving part 20 are disposed in such a manner that another principal surface 21S of a primary magnetic substance core 21 and another principal surface 22S of a secondary magnetic substance core 22 face each other via a primary winding 11 and a secondary winding 12. A distance from a surface 51S of a power supply side shield material 51, facing a power supply side coil 41, to a surface 41S' of the power supply side coil 41, is longer than a distance from a surface 52S of a power receiving side shield material 52, facing a power receiving side coil 42, to a surface 42S' of the power receiving side coil 42, facing the power receiving side shield material 52. |
