| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact power feeding device capable of suppressing generation of an unnecessary magnetic field.SOLUTION: A non-contact power feeding device supplying a power to a power reception coil 20 provided on a traveling mobile body in a non-contact manner by a magnetic action, comprises: a power transmission coil 10 transmitting a power to the power reception coil 20 in a non-contact manner; and current control means controlling a current outputted from a power supply to the power transmission coil. The power transmission coil 10 has a plurality of coil units 100, 200, and 300 respectively obtained by crossing lead wires on a predetermined plane in accordance with a unit of a first pitch along a predetermined direction, and forming a plurality of loop-like coils on the predetermined plane by the crossing lead wires. The plurality of coil units are arranged and overlapped in a direction vertical to a direction along the predetermined plane, and formed so as to have the first pitch of different lengths from each other. In a case where a certain voltage is applied to the lead wires, conduction directions of currents flowing in the loop-like parts of the plurality of coils become reverse to each other on a boundary at a part where the lead wires cross. The current control means makes amplitudes of the AC currents be equivalent to each other. |
