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Lin, Nan ; Röder, Fridolin ; Krewer, Ulrike:
Multiphysics Modeling for Detailed Analysis of Multi-Layer Lithium-Ion Pouch Cells.
In: Energies.
Bd. 11
(2018)
Heft 11
.
- 2998.
ISSN 1996-1073
DOI: https://doi.org/10.3390/en11112998
Abstract
Multiphysics modeling permits a detailed investigation of complex physical interactions and heterogeneous performance in multiple electro-active layers of a large-format Li-ion cell. For this purpose, a novel 3D multiphysics model with high computational efficiency was developed to investigate detailed multiphysics heterogeneity in different layers of a large-format pouch cell at various discharge rates. This model has spatial distribution and temporal evolution of local electric current density, solid lithium concentration and temperature distributions in different electro-active layers, based on a real pouch cell geometry. Other than previous models, we resolve the discharge processes at various discharge C-rates, analyzing internal inhomogeneity based on multiple electro-active layers of a large-format pouch cell. The results reveal that the strong inhomogeneity in multiple layers at a high C-rate is caused by the large heat generation and poor heat dissipation in the direction through the cell thickness. The thermal inhomogeneity also strongly interacts with the local electrochemical and electric performance in the investigated cell.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | 3D multiphysics model; lithium-ion battery; battery design; heterogeneity |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften > Juniorprofessur Methoden des Batteriemanagements > Juniorprofessur Methoden des Batteriemanagements - Juniorprof. Dr.-Ing. Fridolin Röder Fakultäten > Fakultät für Ingenieurwissenschaften > Juniorprofessur Methoden des Batteriemanagements |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 20 Nov 2020 07:47 |
| Letzte Änderung: | 23 Nov 2023 10:41 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/59655 |