Patent ID: 9742199
Date: 2017-08-22
CPC Classifications: H01F,H02J

Claim:
1. A contactless power supply system comprising: a power supplying device; a power receiving device; and a contactless extension plug arranged between the power supplying device and the power receiving device, wherein the contactless extension plug supplies power from the power supplying device to the power receiving device through electromagnetic induction; wherein the power supplying device includes the contactless extension plug includes the power receiving device includes the power receiving device supplies power to a first load based on a voltage generated by the first power reception coil in accordance with a voltage applied to the plug power transmission coil; the first power transmission coil and the plug power reception coil are identical with each other in shape, structure, and size but not in winding number; the first power transmission coil and the plug power reception coil are configured to satisfy a relational equation of where L the plug power transmission coil and the first power reception coil are identical with each other in shape, structure, and size but not in winding number; and the plug power transmission coil and the first power reception coil are configured to satisfy a relational equation of where L