US 12,218,540 B2
Control device for secondary battery to correct battery characteristics on open circuit voltage to remaining capacity
Kazuhiko Namikawa, Osaka (JP); Yudai Yamaguchi, Nara (JP); Junya Kamijima, Osaka (JP); and Toru Wanibuchi, Hyogo (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Dec. 22, 2021, as Appl. No. 17/558,842.
Application 17/558,842 is a continuation of application No. PCT/JP2020/025357, filed on Jun. 26, 2020.
Claims priority of application No. 2019-119974 (JP), filed on Jun. 27, 2019.
Prior Publication US 2022/0115890 A1, Apr. 14, 2022
Int. Cl. H02J 7/00 (2006.01); G01R 31/367 (2019.01); G01R 31/374 (2019.01); G01R 31/3835 (2019.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01)
CPC H02J 7/00712 (2020.01) [G01R 31/367 (2019.01); G01R 31/374 (2019.01); G01R 31/3835 (2019.01); H01M 10/0525 (2013.01); H01M 10/425 (2013.01); H01M 10/44 (2013.01); H01M 10/48 (2013.01); H02J 7/00032 (2020.01); H02J 7/0049 (2020.01)] 9 Claims
OG exemplary drawing
 
1. A control device for a secondary battery, the control device comprising a controller configured to correct battery characteristics on an open circuit voltage to a remaining capacity of the secondary battery,
wherein the controller acquires data of a plurality of open circuit voltages in the battery characteristics during charging the secondary battery,
wherein, when the secondary battery is fully charged, the controller corrects the open circuit voltages between respective data pairs selected and combined from at least one part of the data of the plurality of open circuit voltages, and
wherein the controller weighted-averages and corrects full charge capacities, which are calculated by the correction of the open circuit voltages between the respective data pairs, with differences each between respective remaining capacities each corresponding between the respective data pairs.