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Multiphysics Modeling for Detailed Analysis of Multi-Layer Lithium-Ion Pouch Cells

Title data

Lin, Nan ; Röder, Fridolin ; Krewer, Ulrike:
Multiphysics Modeling for Detailed Analysis of Multi-Layer Lithium-Ion Pouch Cells.
In: Energies. Vol. 11 (2018) Issue 11 . - Art.Nr. 2998.
ISSN 1996-1073
DOI: https://doi.org/10.3390/en11112998

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: 3D multiphysics model; lithium-ion battery; battery design; heterogeneity
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties
Faculties > Faculty of Engineering Science > Junior Professor Methods of Monitoring and Managing Batteries > Junior Professor Methods of Monitoring and Managing Batteries - Juniorprof. Dr.-Ing. Fridolin Röder
Faculties > Faculty of Engineering Science > Junior Professor Methods of Monitoring and Managing Batteries
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 20 Nov 2020 07:47
Last Modified: 27 Nov 2020 07:34
URI: https://eref.uni-bayreuth.de/id/eprint/59655