US 11,887,775 B2
Dual mode wireless power system designs
Christopher M. Pinciuc, Cupertino, CA (US); Daniel T. McDonald, San Jose, CA (US); and Tao Pan, San Jose, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by APPLE INC., Cupertino, CA (US)
Filed on Nov. 10, 2022, as Appl. No. 17/984,666.
Application 17/984,666 is a continuation of application No. 16/559,932, filed on Sep. 4, 2019, granted, now 11,515,083.
Claims priority of provisional application 62/737,284, filed on Sep. 27, 2018.
Prior Publication US 2023/0075207 A1, Mar. 9, 2023
Int. Cl. H01F 38/14 (2006.01); H02J 50/10 (2016.01); H01F 27/36 (2006.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01)
CPC H01F 38/14 (2013.01) [H01F 27/361 (2020.08); H01F 27/366 (2020.08); H02J 7/0042 (2013.01); H02J 50/10 (2016.02); H02J 7/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a housing including a wall having an outer surface arranged to receive a portable electronic device for wireless power transfer between the electronic device and the portable electronic device;
a battery positioned within the housing;
a wireless power coil positioned within the housing; and
one or more layers of nanocrystalline material positioned between the battery and the wireless power coil, wherein the one or more layers of nanocrystalline material are arranged to at least partially absorb magnetic flux from a magnet of the portable electronic device.