US 12,322,996 B2
Systems and methods for protecting batteries
Karthik Kadirvel, Cupertino, CA (US); Sachin Ramesh Chandra, Woodinville, WA (US); and Ankur Gupta, Redwood City, CA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC
Filed on Feb. 18, 2022, as Appl. No. 17/675,733.
Claims priority of provisional application 63/249,330, filed on Sep. 28, 2021.
Prior Publication US 2023/0096836 A1, Mar. 30, 2023
Int. Cl. H02J 7/34 (2006.01); H01M 10/44 (2006.01); H02J 7/00 (2006.01); H04R 1/10 (2006.01)
CPC H02J 7/342 (2020.01) [H01M 10/44 (2013.01); H02J 7/00302 (2020.01); H02J 7/00309 (2020.01); H02J 7/0049 (2020.01); H02J 7/007 (2013.01); H04R 1/1025 (2013.01); H01M 2220/30 (2013.01); H04R 1/1016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a physical processor; and
at least one physical memory connected to the physical processor and storing instructions that, when executed by the physical processor, cause the physical processor to perform:
charging a first battery of a wearable battery-operated device using a power flow across a bidirectional connection from a second battery of a portable charging case, that is designed to charge the wearable battery-operated device, to the first battery;
detecting a battery condition of the first battery of the wearable battery-operated device that indicates a threat to the first battery's health; and
in response to detecting the battery condition, performing a battery-protection action by reversing the power flow across the bidirectional connection from the first battery of the wearable battery-operated device to the second battery of the portable charging case,
wherein the bidirectional connection enables the first battery of the wearable battery-operated device to return energy back to and charge the second battery of the portable charging case.