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Modified electrochemical parameter estimation of NCR18650BD battery using implicit finite volume method
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Rajan, Ashwin T., McGordon, Andrew, Widanage, Widanalage Dhammika and Jennings, P. A. (Paul A.) (2017) Modified electrochemical parameter estimation of NCR18650BD battery using implicit finite volume method. Journal of Power Sources, 341 . pp. 387-395. doi:10.1016/j.jpowsour.2016.12.023 ISSN 0378-7753.
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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2016.12.023
Abstract
The Pseudo Two Dimensional (P2D) porous electrode model is less preferred for real time calculations due to the high computational expense and complexity in obtaining the wide range of electro-chemical parameters despite of its superior accuracy. This paper presents a finite volume based method for re-parametrising the P2D model for any cell chemistry with uncertainty in determining precise electrochemical parameters. The re-parametrisation is achieved by solving a quadratic form of the Butler-Volmer equation and modifying the anode open circuit voltage based on experimental values. Thus the only experimental result, needed to re-parametrise the cell, reduces to the measurement of discharge voltage for any C-rate. The proposed method is validated against the 1C discharge data and an actual drive cycle of a NCR18650BD battery with NCA chemistry when driving in an urban environment with frequent accelerations and regenerative braking events. The error limit of the present model is compared with the electro-chemical prediction of LiyCoO2 battery and found to be superior to the accuracy of the model presented in the literature.
Item Type: | Journal Article | ||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
Library of Congress Subject Headings (LCSH): | Lithium ion batteries | ||||||
Journal or Publication Title: | Journal of Power Sources | ||||||
Publisher: | Elsevier S.A. | ||||||
ISSN: | 0378-7753 | ||||||
Official Date: | 15 February 2017 | ||||||
Dates: |
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Volume: | 341 | ||||||
Page Range: | pp. 387-395 | ||||||
DOI: | 10.1016/j.jpowsour.2016.12.023 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 15 December 2016 | ||||||
Date of first compliant Open Access: | 15 December 2016 | ||||||
Funder: | Innovate UK, High Value Manufacturing Catapult, Jaguar Land Rover (Firm), Tata Motors |
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