| 摘要 |
PROBLEM TO BE SOLVED: To provide a contactless power supply device capable of determining a frequency area where an operation frequency is located with respect to a resonance characteristic.SOLUTION: A contactless power supply device 2 has an inverter circuit, a primary side resonator, a magnetic field detector 25 and a controller. The inverter circuit converts DC power to AC power and outputs the AC power. The primary side resonator comprises a spiral type primary side coil L1 for receiving AC power output from the inverter circuit and generating magnetic field, and a primary side capacitor for forming a primary side resonance circuit together with the primary side coil L1. The magnetic field detector 25 detects magnetic field. The controller executes determination processing of determining the correlation between the operation frequency of the inverter circuit and the resonance characteristic of the primary side resonator based on the detection result of the magnetic field detector 25.SELECTED DRAWING: Figure 1 |
