US 11,901,749 B2
Balanced discharge in multi-battery system
Ajit Justin, Sammamish, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Nov. 19, 2020, as Appl. No. 16/952,575.
Claims priority of provisional application 63/076,044, filed on Sep. 9, 2020.
Prior Publication US 2022/0077693 A1, Mar. 10, 2022
Int. Cl. H02J 7/00 (2006.01)
CPC H02J 7/0016 (2013.01) [H02J 7/0048 (2020.01); H02J 7/00302 (2020.01); H02J 7/007182 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A system comprising:
a first battery with a first discharge path coupled to a battery rail supporting source load electronics;
a second battery with a second discharge path coupled to the battery rail; and
charge control electronics configured to:
decouple the first battery from the battery rail when a first overcharge protection mechanism of the first battery is in a first state different from a second state of a second overcharge protection mechanism of the second battery, wherein a time that the first battery is decoupled from the battery rail corresponds to a time when the first overcharge protection mechanism is disabled and the second overcharge protection mechanism is enabled, the first overcharge protection mechanism preventing charging of the first battery when enabled and the second overcharge protection mechanism preventing charging of the second battery when enabled; and
recouple the first battery to the battery rail when the first overcharge protection mechanism of the first battery and the second overcharge protection mechanism of the second battery are both in a same state that is either an enabled state or a disabled state.