公开(公告)号：US20230275460A1

公开(公告)日：2023-08-31

申请号：US17804922

申请日：2022-06-01

Applicant: Apple Inc.

Inventor： Zelin Xu ,  Brennan K Vanden Hoek ,  Antoin J Russell ,  Daniel J Hiemstra ,  Eric X Zhou ,  Tao Pan

IPC: H02J50/00 ,  H02J50/10 ,  H01F38/14 ,  H01F27/255

CPC classification number: H02J50/005 ,  H02J50/10 ,  H01F38/14 ,  H01F27/255

Abstract: An electronic device can include a metallic or non-metallic housing having a window therethrough, a wireless power transfer coil disposed inside the housing adjacent the window, and a non-metallic cover disposed within the window that protects the wireless power transfer coil, the non-metallic cover incorporating at least one ferromagnetic region that improves magnetic coupling of the wireless power transfer coil to a corresponding wireless power transfer coil of another device by providing a high magnetic permeability flux path. The non-metallic cover and the at least one ferromagnetic region have surface finishes selected to visually match or coordinate with the housing.