| 摘要 |
An electric power supply device generates electric power having a prescribed frequency. An electric power transfer unit receives electric power from the electric power supply device, and transfers electric power to an electric power receiving unit in a contactless manner by resonating with the electric power receiving unit via an electromagnetic field. An electric power sensor senses power reflected to the electric power supply device. A discharging coil unit externally discharges electric power output from the electric power supply device. A relay electrically connects the discharging coil unit between the electric power supply device and the electric power transfer unit when the reflected power detected has a value exceeding a predetermined value.
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