NON-CONTACT POWER SUPPLY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a non-contact power supply system capable of performing high output without expanding a power reception coil's size.SOLUTION: A ground side comprises: a power transmission coil 26; and a high-frequency AC power supply 24 for supplying high-frequency AC to the power transmission coil. A mobile body comprises: a power reception coil 31; a current doubler rectifier 33 for rectifying high-frequency AC received by the power reception coil to output the rectified AC; and a power storage device 35 charged with current rectified by the current doubler rectifier. The power storage device is charged by: setting so that the power reception coil has output current Iand output voltage that is twice as high as voltage at the time of performing rectification using a full-wave rectifier; and the current doubler rectifier outputting power having voltage Vand current 2I, where Vis rated charge voltage of the power storage device and Iis an allowable current of the power reception coil. This system can perform high output charge without changing the size of the power reception coil.