Patent ID: 10038342

Abstract:
The present invention provides a power transfer system capable of reducing electromagnetic energy that disappears into a medium as a resistor when the coil of a power transmitting device and the coil of a power receiving device are apart from each other, in such a way that the power transmitting device of the power transfer system is equipped with a backside dielectric body and a shield body. A power transmitting device (11) faces a power receiving device (12) through a medium. The power transmitting device (11) comprises: a power transmission coil (111); a containment portion (112) having a first surface (112A) facing the power receiving device and a second surface (112B) on the opposite side of the first surface and having a dielectric body covering the power transmission coil (111); a backside dielectric body (113) provided on the second surface (112B) of the containment portion and having a first surface (113A) facing the containment portion and a second surface (113B) on the opposite side of the first surface; and a shield body (114) provided on the second surface (113B) of the backside dielectric body.