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Simulation, Set-Up, and Thermal Characterization of a Water-Cooled Li-Ion Battery System

Feinauer, Max 1; Uhlmann, Nils 2; Ziebert, Carlos ORCID iD icon 2; Blank, Thomas ORCID iD icon 1
1 Institut für Prozessdatenverarbeitung und Elektronik (IPE), Karlsruher Institut für Technologie (KIT)
2 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)

Abstract:

A constant and homogenous temperature control of Li-ion batteries is essential for a good performance, a safe operation, and a low aging rate. Especially when operating a battery with high loads in dense battery systems, a cooling system is required to keep the cell in a controlled temperature range. Therefore, an existing battery module is set up with a water-based liquid cooling system with aluminum cooling plates. A finite-element simulation is used to optimize the design and arrangement of the cooling plates regarding power consumption, cooling efficiency, and temperature homogeneity. The heat generation of an operating Li-ion battery is described by the lumped battery model, which is integrated into COMSOL Multiphysics. As the results show, a small set of non-destructively determined parameters of the lumped battery model is sufficient to estimate heat generation. The simulated temperature distribution within the battery pack confirmed adequate cooling and good temperature homogeneity as measured by an integrated temperature sensor array. Furthermore, the simulation reveals sufficient cooling of the batteries by using only one cooling plate per two pouch cells while continuously discharging at up to 3 C.


Verlagsausgabe §
DOI: 10.5445/IR/1000152252
Veröffentlicht am 04.11.2022
Originalveröffentlichung
DOI: 10.3390/batteries8100177
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2313-0105
KITopen-ID: 1000152252
HGF-Programm 38.02.03 (POF IV, LK 01) Batteries in Application
Weitere HGF-Programme 38.02.02 (POF IV, LK 01) Components and Cells
Erschienen in Batteries
Verlag MDPI
Band 8
Heft 10
Seiten Art.-Nr.: 177
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 12.10.2022
Schlagwörter Li-ion battery pack; water-cooled battery system; cooling plate; lumped battery model; temperature measurement
Nachgewiesen in Dimensions
Web of Science
Scopus
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