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@ARTICLE{Koster:1024934,
author = {Koster, D. and Marongiu, A. and Chahardahcherik, D. and
Braun, C. F. and Schulte, D. and Figgemeier, E.},
title = {{D}egradation analysis of 18650 cylindrical cell battery
pack with immersion liquid cooling system. {P}art 1: {A}ging
assessment at pack level},
journal = {Journal of energy storage},
volume = {62},
issn = {2352-152X},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2024-02584},
pages = {106839 -},
year = {2023},
abstract = {Temperature is a fundamental factor when designing battery
packs, therefore thermal management is essential to
guarantee performance, safety, and lifetime in the
application. In the first of a series of two papers, this
work presents an experimental study of degradation of two
identical 18650-battery packs with two different cooling
systems, one with air cooling and one with a novel immersed
cooling system. By means of cycling tests, the behavior of
the two packs subjected to same degradation profiles but
different cell temperature distribution is quantitatively
and qualitatively analyzed. The results show that
homogeneous temperature distribution can be kept up to a
maximum temperature difference of 1.5 °C between the cells
contained in the immersed-cooled pack against 15 °C between
the cells included in the air-cooled pack. This generates an
increase of capacity retention up to 3.3 $\%$ for the
immersed-cooled pack after 600 cycles. Even though
temperature is kept uniform, immersed cooled pack
experienced cell failures, which were not presented in the
air-cooled pack. Application-oriented analysis discusses
possible merits and drawbacks of implementing such solution
in the application, highlighting that in some cases a
reduction up to 25 $\%$ of pack specific energy can be
experienced when implementing immersed-cooling system.},
cin = {IEK-12},
ddc = {333.7},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000964825800001},
doi = {10.1016/j.est.2023.106839},
url = {https://juser.fz-juelich.de/record/1024934},
}