Patent ID: 9472336
Filing Date: 2016-10-18
CPC Classification: H01F,H02J

Claim Text:
1. A wireless power transmitting coil comprising; at least one first coil wound in a first direction in which, when the wireless power transmitting coil transmits a first power, a current of the first coil flows in the first direction; and at least one second coil wound in a second direction, opposite to the first direction, and concentrically around the first coil on the same plane and configured to contact an outer side of the first coil so that when the wireless power transmitting coil transmits a second power, a current of the second coil flows in the second direction, wherein the first coil and the second coil are planar spiral coils, wherein the first power and the second power are selectively supplied to the first coil and the second coil according to a position of a power receiving coil of a power receiving apparatus, wherein the first power and the second power are supplied to the first coil and the second coil when the power receiving coil is detected both on the first coil and the second coil, wherein the first power is supplied to the first coil only when the power receiving coil is detected on the first coil only, and wherein the second power is supplied to the second coil only when the power receiving coil is detected on the second coil only.