公开(公告)号：US20180233951A1

公开(公告)日：2018-08-16

申请号：US15701237

申请日：2017-09-11

Applicant: Apple Inc.

Inventor： Karl Ruben F. Larsson ,  Eric S. Jol ,  Christopher S. Graham ,  Aaron A. Oro

IPC: H02J50/12 ,  H01F27/24 ,  H01F27/28 ,  H02J7/02 ,  H04B5/00

CPC classification number: H02J50/12 ,  H01F27/22 ,  H01F27/24 ,  H01F27/28 ,  H01F27/362 ,  H01F27/365 ,  H01F38/14 ,  H02J7/025 ,  H04B5/0037

Abstract: Embodiments describe a wireless power receiving module to receive magnetic flux for wireless power transfer. The wireless power receiving module includes a receiver coil comprising a single length of wire wound into a plurality of turns, an electromagnetic receiver shield coupled to a first side of the receiver coil, a ferrite layer coupled to a second side of the receiver coil opposite of the first side, the ferrite layer positioned to redirect magnetic flux during the charging event to improve charging efficiency, and a thermal mitigation shield comprising a thermally conductive layer adhered to an electrically conductive layer where the electrically conductive layer is coupled to ground, and where the ferrite layer is sandwiched between the thermal mitigation shield and the receiver coil.