Patent ID: 9748773
Date: 2017-08-29
CPC Classifications: B60L,B60M,H01F,H02J,Y02T

Claim:
1. A contactless power supply device comprising: a power-transmitting-side pad, and a power-receiving-side pad, wherein each of the power-transmitting-side pad and the power-receiving-side pad has a core made of a magnetic material and a coil in contact with the core, the power-transmitting-side pad transmits power to the power-receiving-side pad in a contactless manner with the power-transmitting-side pad facing the power-receiving-side pad, the core has a plate-shaped yoke portion, the coil has a first coil portion and a second coil portion, the first coil portion is arranged on one of opposing surfaces of each yoke portion in a thickness direction of the yoke portion, and the one of the opposing surfaces of the yoke portion of the power-transmitting-side pad faces the one of the opposing surfaces of the yoke portion of the power-receiving-side pad, the second coil portion is arranged along an outer periphery of each yoke portion, the core has a magnetic pole portion; the magnetic pole portion is in contact with the one of the opposing surfaces of the yoke portion; the one of the opposing surfaces of the yoke portion is surrounded by the coil; the first coil portion is arranged on the one of the opposing surfaces of the yoke portion; and the second coil portion is at least partially located within a region occupied by the magnetic pole portion when viewed from the thickness direction of the yoke portion.