Manufacturing method of coil and coil pair, power transmission device and power receiving device, power transmission system and coil

摘要

PROBLEM TO BE SOLVED: To provide a coil capable of improving the transmission efficiency while adjusting the resonance frequency in non-contact power transmission to a desired value. SOLUTION: In a coil for non-contact type power transmission, a coil CL1 in which a copper thin film wire is wound concentrically a plurality of times from the outer peripheral side to the inner peripheral side and concentric from the inner peripheral side to the outer peripheral side. In addition, it is a coil in which a copper thin film wire is wound a plurality of times in the winding direction opposite to the coil CL1. The surface opposite to the film and the surface opposite to the film of the coil CL2 are connected by the connecting member CT. [Selection diagram] FIG. 7