| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact power feeding system capable of suppressing reduction in power transmission efficiency due to a positional deviation between a primary coil and a secondary coil, and easily achieving great power transmission by utilizing resonance phenomenon.SOLUTION: In an electromagnetic induction type non-contact power feeding system, a primary coil (power feeding side coil) and a secondary coil (power receiving side coil) are constituted by a spiral type coil obtained by winding a Litz wire formed by twisting a plurality of enamel wires with a predetermined number of turns on the same plane. Then, the outside diameter ratio (D2/D1) between the primary coil and the secondary coil is made to be 0.8 to 1.1, the inside diameter ratio (d2/d1) is made to be 1.2 to 2.0 and the inductance ratio (L2/L1) is made to be 0.9 to 1.1. |
