US 11,923,704 B2
Battery pack remaining charge balancing system
James Chester Meador, Mountain View, CA (US); Daniel Tsuteh Chian, Los Altos, CA (US); Julian Arlo Binder, Redwood City, CA (US); and Meera Radhakrishnan, Mountain View, CA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Mar. 4, 2022, as Appl. No. 17/687,547.
Prior Publication US 2023/0283087 A1, Sep. 7, 2023
Int. Cl. H02J 7/00 (2006.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H01M 10/46 (2006.01); H01M 10/48 (2006.01)
CPC H02J 7/0016 (2013.01) [H01M 10/425 (2013.01); H01M 10/441 (2013.01); H01M 10/46 (2013.01); H01M 10/482 (2013.01); H02J 7/0063 (2013.01); H02J 7/00712 (2020.01); H01M 2010/4271 (2013.01)] 18 Claims
OG exemplary drawing
 
11. A system comprising:
a first battery pack interface for attaching a first battery pack;
a second battery pack interface for attaching a second battery pack;
a first load switch coupled between the first battery pack interface and a load;
a second load switch coupled between the second battery pack interface and the load; and
a controller coupled to receive a first status of the first battery pack interface and a second status of the second battery pack interface, wherein the first status and the second status include a representation of a remaining capacity of respective first and second battery packs, compare the first status and the second status by calculating a difference in the remaining capacities, and control the first and second load switches based on the difference in the remaining capacities to balance remaining capacities of the first and second battery packs.