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Characterising Li-ion battery degradation through the identification of perturbations in electrochemical battery models
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Uddin, Kotub, Perera, Surak, Widanage, Widanalage Dhammika and Marco, James (2015) Characterising Li-ion battery degradation through the identification of perturbations in electrochemical battery models. In: Electric Vehicle Symposium 28 (EVS28), Goyang, Korea, 3-5 May 2015
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Abstract
Lithium ion batteries undergo complex electrochemical and mechanical degradation. This complexity is pronounced in applications such as electric vehicles where highly demanding cycles of operation and varying environmental conditions lead to non-trivial interactions of ageing stress factors. This work presents the framework for an ageing diagnostic tool based on identifying the physical parameters of a fundamental electrochemistry-based battery model from non-invasive voltage/current cycling tests. Exploiting the embedded symbolic manipulation tool and global optimiser in MapleSim, computational cost is reduced, significantly facilitating rapid optimisation. The diagnostic tool is used to study the degradation of a 3Ah LiC6/LiNiCoAlO2 battery stored at 45°C at 50% State of Charge for 202 days; the results agree with expected battery degradation.
Item Type: | Conference Item (Paper) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TL Motor vehicles. Aeronautics. Astronautics |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Library of Congress Subject Headings (LCSH): | Lithium ion batteries | ||||
Official Date: | 2015 | ||||
Dates: |
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Status: | Peer Reviewed | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | Electric Vehicle Symposium 28 (EVS28) | ||||
Type of Event: | Conference | ||||
Location of Event: | Goyang, Korea | ||||
Date(s) of Event: | 3-5 May 2015 | ||||
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