| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless electric power transmission device capable of information detection of a coil by a simple method. <P>SOLUTION: A wireless electric power transmission device of at least one embodiment comprises: a high frequency power source 1 of which an output frequency is variable; a power transmission device 20 which is connected with the high frequency power source 1, and which comprises a power transmission side resonance circuit 3a which transmits an electrical power wirelessly and a power transmitting coil 4; a frequency control part 2 which is connected with the high frequency power source 1, and changes an operation frequency of the power transmission device 20; a power receiving device 21 comprising a power receiving side resonance circuit 3b which receives the electrical power transmitted from the power transmission device 20 and a power receiving coil 5; and an impedance detection part which detects an impedance of at least two or more points in the high frequency power source 1 and the power transmission device 20 or the power receiving device 21. <P>COPYRIGHT: (C)2012,JPO&INPIT |
