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dc.contributor.authorBiju, Nikhil
dc.contributor.authorFang, Huazhen
dc.date.accessioned2023-05-11T14:52:26Z
dc.date.available2023-05-11T14:52:26Z
dc.date.issued2023-06-01
dc.identifier.citationNikhil Biju, Huazhen Fang, BattX: An equivalent circuit model for lithium-ion batteries over broad current ranges, Applied Energy, Volume 339, 2023, 120905, ISSN 0306-2619, https://doi.org/10.1016/j.apenergy.2023.120905.en_US
dc.identifier.urihttps://hdl.handle.net/1808/34161
dc.description.abstractAdvanced battery management is as important for lithium-ion battery systems as the brain is for the human body. Its performance is based on the use of fast and accurate battery models. However, the mainstream equivalent circuit models and electrochemical models have yet to meet this need well, due to their struggle with either predictive accuracy or computational complexity. This problem has acquired urgency as some emerging battery applications running across broad current ranges, e.g., electric vertical take-off and landing aircraft, can hardly find usable models from the literature. Motivated to address this problem, we develop an innovative model in this study. Called BattX, the model is an equivalent circuit model that draws comparisons to a single particle model with electrolyte and thermal dynamics, thus combining their respective merits to be computationally efficient, accurate, and physically interpretable. The model design pivots on leveraging multiple circuits to approximate major electrochemical and physical processes in charging/discharging. Given the model, we develop a multipronged approach to design experiments and identify its parameters in groups from experimental data. Experimental validation proves that the BattX model is capable of accurate voltage prediction for charging/discharging across low to high C-rates.en_US
dc.publisherElsevieren_US
dc.rights© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC license.en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en_US
dc.subjectLithium-ion batteriesen_US
dc.subjectBattery modelingen_US
dc.subjectEquivalent circuit modelen_US
dc.subjectElectrochemical modelen_US
dc.subjectHigh-power battery systemsen_US
dc.titleBattX: An equivalent circuit model for lithium-ion batteries over broad current rangesen_US
dc.typeArticleen_US
kusw.kuauthorBiju, Nikhil
kusw.kuauthorFang, Huazhen
kusw.kudepartmentMechanical Engineeringen_US
dc.identifier.doi10.1016/j.apenergy.2023.120905en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccessen_US


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© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC license.
Except where otherwise noted, this item's license is described as: © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC license.