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Bridging physics-based and equivalent circuit models for lithium-ion batteries
Chalmers Univ Technol, Div Elect Power Engn, Dept Elect Engn, S-41296 Gothenburg, Sweden..
Umea Univ, Dept Math & Math Stat, S-90187 Umea, Sweden.;Malardalen Univ, UKK, Div Math & Phys, S-72123 Vasteras, Sweden..
Scania CV AB, S-15187 Sodertalje, Sweden..
Uppsala Univ, Angstrom Lab, Dept Chem, Box 538, S-75121 Uppsala, Sweden..
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2021 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 372, article id 137829Article in journal (Refereed) Published
Abstract [en]

In this article, a novel implementation of a widely used pseudo-two-dimensional (P2D) model for lithium-ion battery simulation is presented with a transmission line circuit structure. This implementation represents an interplay between physical and equivalent circuit models. The discharge processes of an LiNi0.33Mn0.33Co0.33O2-graphite lithium-ion battery under different currents are simulated, and it is seen the results from the circuit model agree well with the results obtained from a physical simulation carried out in COMSOL Multiphysics, including both terminal voltage and concentration distributions. Finally we demonstrated how the circuit model can contribute to the understanding of the cell electrochemistry, exemplified by an analysis of the overpotential contributions by various processes. 

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2021. Vol. 372, article id 137829
Keywords [en]
Lithium-ion battery, Pseudo-two-dimensional model, Transmission line model, Overpotential
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-53612DOI: 10.1016/j.electacta.2021.137829ISI: 000619728100010Scopus ID: 2-s2.0-85100403454OAI: oai:DiVA.org:mdh-53612DiVA, id: diva2:1536606
Available from: 2021-03-11 Created: 2021-03-11 Last updated: 2021-03-26Bibliographically approved

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Wang, Siyang

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