| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact charging system capable of transmitting information regarding a power receiving state from a power receiving device to a power transmitting device in accordance with a simple method while receiving power.SOLUTION: The non-contact charging system comprises a power transmitting device for transmitting power in a resonant frequency while using a power transmitting resonance coil, and a power receiving device for receiving power in the resonant frequency while using a power receiving resonance coil. The power receiving device includes an adjustment part capable of adjusting the resonant frequency for the power receiving resonance coil, and a power reception control part which instructs the adjustment part to adjust the resonant frequency in accordance with a predetermined pattern in the case where a predetermined condition is satisfied. The power transmitting device includes: a reflection wave detection part for detecting a reflection wave from the power receiving device with power transmission, an extraction part for extracting power reception information included in the reflection wave detected by the reflection wave detection part and varying in accordance with the adjustment of the resonant frequency; and a power transmission control part for controlling power transmission from the power transmitting resonance coil on the basis of the power reception information extracted by the extraction part. |
