US 11,909,248 B2
Accessory with a magnetic relay structure for wireless power transfer
Zelin Xu, San Jose, CA (US); Nan Liu, Sunnyvale, CA (US); Zaki Moussaoui, San Carlos, CA (US); Gianpaolo Lisi, Santa Clara, CA (US); Kunal Bhargava, Auckland (NZ); Madhusudanan Keezhveedi Sampath, San Jose, CA (US); Matthew J. Chabalko, Santa Cruz, CA (US); and Robert Scritzky, Sunnyvale, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Feb. 19, 2021, as Appl. No. 17/179,647.
Claims priority of provisional application 63/034,544, filed on Jun. 4, 2020.
Prior Publication US 2021/0384754 A1, Dec. 9, 2021
Int. Cl. H02J 7/02 (2016.01); H02J 7/00 (2006.01); H02J 50/10 (2016.01); H05K 5/03 (2006.01); G06F 3/0354 (2013.01); H01F 7/02 (2006.01); H05K 9/00 (2006.01); H05K 5/00 (2006.01)
CPC H02J 7/02 (2013.01) [G06F 3/03545 (2013.01); H01F 7/02 (2013.01); H02J 7/0042 (2013.01); H02J 50/10 (2016.02); H05K 5/0017 (2013.01); H05K 5/03 (2013.01); H05K 9/0007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cover for an electronic device having a front face, the cover comprising:
a rear cover portion configured to receive the electronic device;
a front cover portion configured to move relative to the rear cover portion and configured to cover the front face of the electronic device; and
a ferrimagnetic core embedded in the front cover portion, wherein the ferrimagnetic core is configured to direct received magnetic flux from a first coil in the electronic device to a second coil in an additional electronic device;
a first magnetic alignment structure in the front cover portion; and
a shielding structure in the front cover portion, wherein the shielding structure is interposed between the ferrimagnetic core and the first magnetic alignment structure.