Adaptive Thermal Control of Cell Groups to Extend Cycle Life of Lithium-Ion Battery Packs

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Author(s)Connor, Wesley D.
Author(s)Advani, Suresh G.
Author(s)Prasad, Ajay K.
Date Accessioned2023-06-22T18:47:32Z
Date Available2023-06-22T18:47:32Z
Publication Date2023-04-07
DescriptionThis article was originally published in Applied Sciences. The version of record is available at: https://doi.org/10.3390/app13084681. Copyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland.
AbstractWe present a novel approach for a battery management system in which adaptive thermal control is employed to balance the capacities of individual groups of cells within a lithium-ion battery pack. Maintaining capacity balance within the battery pack in this manner can significantly extend its cycle life. We explore the physical implementation of this concept and demonstrate that it is a viable way to extend the life of battery packs. The experimental setup consists of three pairs of cells connected electrically in series and supplied with coolant flow from a chiller. All cells are initially in capacity balance and are cooled uniformly for the first 50 fast charge/discharge cycles. Subsequently, cooling is halted to specific cell pairs to deliberately unbalance their capacities. Finally, cooling is selectively restored to correct the capacity imbalance between the cell groups by the end of 100 charge/discharge cycles. These results suggest that adaptive thermal control can be used effectively to maintain capacity balance within the battery pack.
SponsorThis program is funded by the Federal Transit Administration, under grant DE-04-7004.
CitationConnor, Wesley D., Suresh G. Advani, and Ajay K. Prasad. 2023. "Adaptive Thermal Control of Cell Groups to Extend Cycle Life of Lithium-Ion Battery Packs" Applied Sciences 13, no. 8: 4681. https://doi.org/10.3390/app13084681
ISSN2076-3417
URLhttps://udspace.udel.edu/handle/19716/32940
Languageen_US
PublisherApplied Sciences
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
Keywordslithium-ion batteries
Keywordsbattery management system
Keywordsthermal management system
Keywordsbattery degradation
Keywordsgrid storage
Keywordselectric vehicles
Keywordsaffordable and clean energy
TitleAdaptive Thermal Control of Cell Groups to Extend Cycle Life of Lithium-Ion Battery Packs
TypeArticle
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