US 11,654,793 B2
Cell capacity based battery pack balancing
Rui Hu, Windsor (CA); Rui Wang, Canton, MI (US); Xu Wang, Northville, MI (US); and Baojin Wang, Saline, MI (US)
Assigned to FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Nov. 19, 2020, as Appl. No. 16/952,671.
Prior Publication US 2022/0153168 A1, May 19, 2022
Int. Cl. H02J 7/00 (2006.01); B60L 58/22 (2019.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01)
CPC B60L 58/22 (2019.02) [H01M 10/425 (2013.01); H01M 10/441 (2013.01); H01M 2010/4271 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A vehicle comprising:
a traction battery including a plurality of cells; and
a controller programmed to,
responsive to some of the cells achieving a first state of charge threshold, discharge other of the cells, each having a capacity greater than each of the some of the cells, to a second state of charge threshold that is greater than the first state of charge threshold without discharging the some of the cells, and then charge all of the cells at a same time such that the some of the cells and the other of the cells achieve a same predetermined target state of charge at a same time, and
responsive to the some of the cells achieving the first state of charge threshold, the other of the cells having states of charge greater than the first state of charge threshold but less than the second state of charge threshold, and the vehicle not be being plugged in, charge all of the cells at the same time.