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A multi scale multi domain model for large format lithium-ion batteries

Schmidt, Adrian 1; Oehler, Dieter 2; Weber, André 1; Wetzel, Thomas 2; Ivers-Tiffée, Ellen 1
1 Center for Electrochemical Energy Storage Ulm & Karlsruhe (CELEST), Karlsruher Institut für Technologie (KIT)
2 Institut für Thermische Verfahrenstechnik (TVT), Karlsruher Institut für Technologie (KIT)


A multi scale multi domain (MSMD) model for large format lithium-ion battery (LIB) cells is presented. In our approach the homogenization is performed on two scales (i) from the particulate electrodes to homogenized electrode materials using an extended Newman model and (ii) from individual cell layer materials to a homogenized battery material with anisotropic electrical and thermal transport properties. Both intertwined homogenizations are necessary for considering electrochemical-thermal details related to microstructural and material features of electrode and electrolyte layers at affordable computational costs. Simulation results validate the MSMD model compared to the homogenized Newman model for isothermal cases. The strength of the MSMD model is demonstrated for non-isothermal conditions, namely for a 120 Ah cell discharged with four different cooling concepts: (i) without cooling (ii) with a base plate cooling (iii) with a tab cooling and (iv) with a side cooling. As one result, temperature gradients cause a local peak discharge up to 2.8 C for a global 2 C discharge rate.

Verlagsausgabe §
DOI: 10.5445/IR/1000137079
Veröffentlicht am 15.09.2021
DOI: 10.1016/j.electacta.2021.139046
Zitationen: 2
Web of Science
Zitationen: 2
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Center for Electrochemical Energy Storage Ulm & Karlsruhe (CELEST)
Institut für Angewandte Materialien – Elektrochemische Technologien (IAM-ET1)
Institut für Thermische Verfahrenstechnik (TVT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0013-4686, 1873-3859
KITopen-ID: 1000137079
Erschienen in Electrochimica Acta
Verlag Elsevier
Band 393
Seiten Art.-Nr.: 139046
Nachgewiesen in Dimensions
Web of Science
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