NON-CONTACT POWER FEEDING MECHANISM AND ELECTROMAGNETIC INDUCTION COIL FOR NON-CONTACT POWER FEEDING DEVICE

摘要

The purpose of the present invention is to provide a non-contact power feeding mechanism with high power feeding efficiency, and an electromagnetic induction coil for a non-contact power feeding device to achieve non-contact power feeding with high power feeding efficiency. To this end, the non-contact power feeding mechanism comprises: a power feeding device (A) including a primary coil (1) which is an electromagnetic coil for the non-contact power feeding device; and a power reception device (B) including a secondary coil (3). The primary coil (1) includes a primary core (11) and a winding wire (12) wound around the primary core (11), and the secondary coil (3) includes a secondary core and a winding wire (32) wound around the secondary core (3). The primary core (11) comprises: a base unit (11a); one pair of extension parts (11b) extending from both ends of the base unit (11a); and one pair of facing parts (11c) extending from the extension parts (11b) and forming a space (S) therebetween by having the axial cores parallel to each other. The winding wire (12) is wound around one or more pairs of facing parts. The secondary coil (3) is arranged between the one pair of facing parts (11c) for the axial cores of the facing part (11c) and the secondary core to be parallel to each other during power feeding. The power reception device (B) comes in close contact with the cross-sectional surface of the secondary core, and includes a magnetic sheet whose area is larger than the cross-sectional surface of the secondary core.