| 摘要 |
PROBLEM TO BE SOLVED: To provide a contactless power supply system capable of easily enhancing power transmission efficiency.SOLUTION: The contactless power supply system 1 comprises: power transmission equipment 2 which has a resonance circuit for power transmission 10 having a first inductor 11 for which an inductance value is previously set, a second inductor 12 which is serially connected with the first inductor 11 and for which an inductance value can be changed, and a first capacitor 13 connected with the first inductor 11 and the second inductor 12 in parallel; power reception equipment 3 which has a resonance circuit for power reception 20 having a third inductor 21 magnetically connected with the first inductor 11 and the second inductor 12, and a second capacitor 22 connected with the third inductor 21 in parallel; and an impedance change part 4 for changing impedance of the resonance circuit for power transmission 10 so that the resonance frequency of the resonance circuit for power transmission 10 matches the resonance frequency of the resonance circuit for power reception 20.SELECTED DRAWING: Figure 1 |
