	US 11,735,781 B2
	Charge and discharge control device, charge and discharge system, charge and discharge control method, and non-transitory storage medium
Nobukatsu Sugiyama, Kawasaki Kanagawa (JP); Yumi Fujita, Tokyo (JP); Tomokazu Morita, Funabashi Chiba (JP); and Ena Ishii, Yokohama Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Aug. 31, 2020, as Appl. No. 17/7,192.
Claims priority of application No. 2020-005970 (JP), filed on Jan. 17, 2020.
Prior Publication US 2021/0226266 A1, Jul. 22, 2021
Int. Cl. H02J 7/00 (2006.01); G01R 31/382 (2019.01); H01M 10/44 (2006.01); G01R 31/3842 (2019.01); G01R 31/367 (2019.01); G01R 31/396 (2019.01)

CPC H01M 10/441 (2013.01) [G01R 31/367 (2019.01); G01R 31/382 (2019.01); G01R 31/3842 (2019.01); H02J 7/0048 (2020.01); H02J 7/00304 (2020.01); H02J 7/00714 (2020.01); H02J 7/007182 (2020.01); H02J 7/007184 (2020.01); G01R 31/396 (2019.01); Y02T 10/7072 (2013.01)]

3 Claims

1. A charge and discharge control method of controlling charging and discharging of a battery module in which a plurality of cell blocks, each including one or more unit cells, are connected in parallel to one another, the method comprising:

calculating a ratio of a measurement value of a current relative to any one of a cell block capacity, a positive electrode capacitance and a negative electrode capacitance as a current load in regard to each of the cell blocks;

suppressing an input current or an output current of the battery module, in which all of the cell blocks are connected in parallel, based on a fact that the calculated current load is equal to or greater than a threshold value in one or more of the cell blocks, as compared to a case in which the current load is smaller than the threshold value in all of the cell blocks; and

charging the battery module by the suppressed input current or discharging the battery module by the suppressed output current, so as to change a state of charge (SOC) of the battery module.