US 12,463,264 B2
Method for operating storage battery system
Hiroyuki Abe, Anjo (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK Insulators, Ltd., Nagoya (JP)
Filed on Aug. 3, 2022, as Appl. No. 17/817,080.
Application 17/817,080 is a continuation of application No. PCT/JP2020/038265, filed on Oct. 9, 2020.
Claims priority of application No. 2020-047296 (JP), filed on Mar. 18, 2020.
Prior Publication US 2022/0376318 A1, Nov. 24, 2022
Int. Cl. H01M 10/44 (2006.01); G01R 31/392 (2019.01); H01M 10/42 (2006.01); H01M 10/60 (2014.01); H02J 7/00 (2006.01)
CPC H01M 10/441 (2013.01) [G01R 31/392 (2019.01); H01M 10/60 (2015.04); H01M 2010/4271 (2013.01); H02J 7/0069 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A method for operating a storage battery system comprising:
preparing a storage battery system including a plurality of storage batteries divided into a plurality of storage battery blocks, a useful life of each of the plurality of storage batteries being shorter than a project life, and total capacity of the plurality of storage batteries is equal to or greater than a product of capacity required for a project and a ratio of the project life to the useful life;
dividing the project life into a plurality of periods;
selecting, for each of the plurality of periods, a rest storage battery block from the plurality of storage battery blocks in rotation, resting the rest storage battery block, and operating an operational storage battery block of the plurality of storage battery blocks other than the rest storage battery block;
preventing a sum of actual operating time and equivalent operating time from exceeding the useful life during the project life, the actual operating time indicating time each of the plurality of storage battery blocks has been operated, and the equivalent operating time indicating time needed to cause, through the real operation of each of the plurality of storage battery blocks, the equivalent degradation to degradation caused to each of the plurality of storage battery blocks during the resting;
causing a state of charge of one or more storage batteries of the rest storage battery block to achieve a set range at a start of each of the plurality of periods; and
performing supplemental charge to supplement self-discharge of the storage batteries of the rest storage battery block during each of the plurality of periods to maintain the state of charge of the storage batteries of the rest storage battery block within the set range.