MULTIPLE COIL CONTACTLESS POWER TRANSMISSION SYSTEM

A contactless power transmission system C is provided for supplying power contactlessly from a power transmission apparatus A to a power reception apparatus B. The power transmission apparatus A includes a high-frequency power source device 1 for outputting a constant high-frequency current, and power transmission units 21, 22, 23 having serial resonance circuits. The power reception apparatus B includes power reception units 31, 32, 33 having parallel resonance circuits. A power transmission coil Lt1, Lt2, Lt3 of the power transmission unit 21, 22, 23 and a power reception coil Lr1, Lr2, Lr3 of the power reception unit 31, 32, 33 are magnetically coupled. The power transmission units 21, 22, 23 are connected in series, while the power reception units 31, 32, 33 are connected in parallel. Power is transmitted from the power transmission unit 21, 22, 23 to the power reception unit 31, 32, 33 by magnetic field resonance.