US 11,929,477 B2
Optimization of thermal management control of lithium-ion battery system
Shuai Shao, Sunnyvale, CA (US); and Tianyi Gao, Sunnyvale, CA (US)
Assigned to BAIDU USA LLC, Sunnyvale, CA (US)
Filed by BAIDU USA LLC, Sunnyvale, CA (US)
Filed on Feb. 24, 2021, as Appl. No. 17/183,942.
Prior Publication US 2022/0271360 A1, Aug. 25, 2022
Int. Cl. H01M 10/63 (2014.01); H01M 10/48 (2006.01); H01M 10/613 (2014.01); H01M 10/6556 (2014.01); H01M 10/6563 (2014.01); H05K 7/20 (2006.01)
CPC H01M 10/63 (2015.04) [H01M 10/48 (2013.01); H01M 10/613 (2015.04); H01M 10/6556 (2015.04); H01M 10/6563 (2015.04); H05K 7/20718 (2013.01); H05K 7/20763 (2013.01); H01M 2220/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for managing a battery system for information technology (IT) equipment, comprising:
determining that a lithium ion based battery is inactive; and
in response to the lithium ion based battery being inactive, a) maintaining, while the battery is inactive, a temperature of the battery at or below an optimal storage temperature of the battery using a primary cooling system, wherein the optimal storage temperature of the battery is determined based on selecting from a plurality of storage temperatures each of which having computed a sum of i) a cost associated with a power consumption used to cool the battery, and ii) a cost associated with a degradation of a capacity of the battery, wherein the optimal storage temperature is selected from the plurality of storage temperatures, and
b) in response to determining that the primary cooling system does not decrease the temperature of the battery, maintaining the temperature of the battery at or below the optimal storage temperature of the battery using a secondary cooling system which includes a compressor, while the battery is inactive.