An improved Thevenin model of lithium-ion battery with high accuracy for electric vehicles

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dc.contributor.author Ding, Xiaofeng
dc.contributor.author Zhang, Donghuai
dc.contributor.author Cheng, Jiawei
dc.contributor.author Wang, Binbin
dc.contributor.author Luk, Patrick Chi-Kwong
dc.date.accessioned 2020-01-13T17:22:49Z
dc.date.available 2020-01-13T17:22:49Z
dc.date.issued 2019-08-07
dc.identifier.citation Ding X, Zhang D, Cheng J, Wang B, et al., (2020) An improved Thevenin model of lithium-ion battery with high accuracy for electric vehicles. Applied Energy, Volume 254, November 2019, Article number 113615 en_UK
dc.identifier.issn 0306-2619
dc.identifier.uri https://doi.org/10.1016/j.apenergy.2019.113615
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/14916
dc.description.abstract This paper proposes an improved Thevenin model of the Lithium-ion battery taking into account temperature influence on the calculation accuracy of the open circuit voltage of a battery. The calculation accuracy of the terminal voltage of a battery is improved without increasing the order of the model. Firstly, the model was proposed based on Thevenin model and the relationship between the open-circuit voltage and the state of charge. Then, based on the experimental results of the open-circuit voltage test and hybrid power pulse characteristic test, the parameters of the battery model were identified by polynomial fitting and genetic algorithm, respectively. Furthermore, the temperature effects were considered in both the open-circuit voltage and hybrid power pulse characteristic tests. Finally, the proposed model was tested and verified by experiments under the Dynamic Stress Test condition and the Urban Dynamometer Driving Schedule at different temperatures. The accuracy of the proposed model is high and the parameter identification error is less than 1%. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.subject Lithium-ion power battery en_UK
dc.subject Equivalent circuit model en_UK
dc.subject Parameter identification en_UK
dc.title An improved Thevenin model of lithium-ion battery with high accuracy for electric vehicles en_UK
dc.type Article en_UK


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