US 11,843,267 B2
Battery control unit and battery system
Chihiro Ono, Susono (JP); and Takahiro Syouda, Susono (JP)
Assigned to YAZAKI CORPORATION, Tokyo (JP)
Filed by Yazaki Corporation, Tokyo (JP)
Filed on Jun. 9, 2021, as Appl. No. 17/343,151.
Claims priority of application No. 2020-106011 (JP), filed on Jun. 19, 2020.
Prior Publication US 2021/0399557 A1, Dec. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/44 (2006.01); H02J 7/00 (2006.01); H02J 7/04 (2006.01)
CPC H02J 7/0024 (2013.01) [H01M 10/44 (2013.01); H02J 7/0016 (2013.01); H02J 7/0048 (2020.01); H02J 7/007182 (2020.01); H02J 7/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A battery control unit comprising:
a switching unit configured to be provided for each of a plurality of batteries connected in series to each other, and switch between a connection state in which the corresponding battery is discharged and a non-connection state in which the corresponding battery is not discharged;
a discharge current limitation unit configured to send a signal to limit a discharge current flowing from the battery in the connection state so as not to exceed a discharge current limitation value that is smallest among discharge current limitation values which are determined by the discharge current limitation unit according to each battery state; and
a first control unit configured to switch to the non-connection state from the battery having the discharge current limitation value before the discharge current is limited according to the signal.