US 11,967,847 B2
Battery bank control device and method
Sung Yul Yoon, Daejeon (KR); Yoon Joon Choi, Daejeon (KR); Hae In Choi, Daejeon (KR); Jae Sung Im, Daejeon (KR); and Hyo Seok Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/432,482
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Mar. 16, 2020, PCT No. PCT/KR2020/003594
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/189998, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 10-2019-0032430 (KR), filed on Mar. 21, 2019.
Prior Publication US 2022/0140618 A1, May 5, 2022
Int. Cl. H02J 7/00 (2006.01); G01R 31/374 (2019.01); G01R 31/3835 (2019.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01M 50/204 (2021.01)
CPC H02J 7/0048 (2020.01) [G01R 31/374 (2019.01); G01R 31/3835 (2019.01); H01M 10/425 (2013.01); H01M 10/48 (2013.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H01M 50/204 (2021.01); H02J 7/0013 (2013.01); H02J 7/007 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/10 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A battery bank control device for setting a power limit value of a battery bank in which a plurality of battery racks are connected in parallel, the device comprising:
a voltage measurement unit configured to measure a voltage of each battery rack of the plurality of battery racks;
a first power limit calculation unit configured to calculate a first power limit value according to a state of charge (SOC) calculated based on the voltage of each battery rack with respect to each battery rack;
a capacity ratio calculation unit configured to calculate a capacity ratio of each battery rack based on capacity information of the plurality of battery racks;
a second power limit calculation unit configured to calculate a second power limit value using the capacity ratio and the first power limit value of each battery rack; and
a battery bank power limit calculation unit configured to calculate a battery bank power limit value using the second power limit value of each battery rack.