Patent ID: 9349530
Filing Date: 2016-05-24
CPC Classification: B60L,H01F,H02J,Y02T

Claim Text:
1. A wireless power transmission system configured to transmit electric power by a non-contact method from a first inductor to a second inductor, or vice versa, via resonant magnetic coupling, the system comprising: the first inductor that has a center hole; the second inductor that is spaced apart from the first inductor and that is smaller in size than the hole of the first inductor; and a magnetic body that is interposed between the first inductor and the second inductor, that covers from an inner edge of the first inductor to an outer edge thereof, and that has a center hole being larger in size than the second inductor, so as to reduce a leaking magnetic field over the first inductor while transmitting electric power between the first inductor and the second inductor, wherein the magnetic body includes a portion that extends from the inner edge of the first inductor toward the center of the hole and a portion that extends outside of the first inductor from the outer edge of the first inductor.