US 11,750,004 B2
Battery management system and battery management method
Hsiu-Hsien Su, Kaohsiung (TW); Bin-Hao Chen, Kaohsiung (TW); Guan-Ru Jiang, Kaohsiung (TW); and Yi-Xiang Lai, Kaohsiung (TW)
Assigned to APh ePower Co., Ltd., Kaohsiung (TW)
Filed by APh ePower Co., Ltd., Kaohsiung (TW)
Filed on Oct. 27, 2022, as Appl. No. 17/975,553.
Claims priority of application No. 110148502 (TW), filed on Dec. 23, 2021.
Prior Publication US 2023/0208167 A1, Jun. 29, 2023
Int. Cl. H02J 7/00 (2006.01); G01R 31/367 (2019.01); G01R 31/388 (2019.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01)
CPC H02J 7/0047 (2013.01) [G01R 31/367 (2019.01); G01R 31/388 (2019.01); H01M 10/425 (2013.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H02J 7/0014 (2013.01); H02J 7/00304 (2020.01); H02J 7/00308 (2020.01); H02J 7/00309 (2020.01); H02J 7/00711 (2020.01); H02J 7/00714 (2020.01); H02J 7/007182 (2020.01); H02J 7/007194 (2020.01); H01M 2010/4271 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A battery management system, comprising:
a temperature sampling circuit, configured to obtain a temperature parameter of a plurality of battery packs;
a plurality of voltage measurement circuits, respectively coupled to the battery packs and configured to obtain a plurality of open circuit voltage parameters of the battery packs;
a current sampling circuit, coupled to the battery packs and configured to obtain a current parameter of the battery packs; and
a microcontroller, coupled to the voltage measurement circuits, the current sampling circuit, and the temperature sampling circuit,
wherein the microcontroller obtains a plurality of initial state-of-charge parameters of the battery packs according to the open circuit voltage parameters and the temperature parameter and respectively calculates a plurality of present battery powers of the battery packs according to the initial state-of-charge parameters, the temperature parameter, and the current parameter.