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Distributed internal thermal monitoring of lithium ion batteries with fibre sensors

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Yu, Yifei, Vincent, Timothy A., Sansom, Jonathan E. H., Greenwood, David G. and Marco, James (2022) Distributed internal thermal monitoring of lithium ion batteries with fibre sensors. Journal of Energy Storage, 50 . 104291. doi:10.1016/j.est.2022.104291 ISSN 2352-152X.

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Official URL: https://doi.org/10.1016/j.est.2022.104291

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Abstract

Real-time monitoring of the thermal characteristics of a lithium ion battery under electrical excitation, is a key requirement that underpins the safe operation of the battery; its reliability and life. Further, it facilitates the design of many supporting elements of the battery system, including the thermal management strategy and the algorithms that comprise the battery management system. The novelty of this study is advanced distributed thermal monitoring from external to embedded measurement for future smart battery and management. Rayleigh scattering based optical fibre sensors are known to be robust and able to operate when immersed in electrolyte, they have a small physical size and are able to provide a measurement of temperature with a spatial resolution of circa 2.6 mm. The spatial distribution of the temperature profile, arising from the complexity and variations within the cell is investigated. The results show that the peak temperature between the cell core and surface, along the cell length can be as high as 9.7 °C for 1C discharge. This paper provides a detailed explanation of the cell modification method, instrumentation process and the fundamental principles of in-cell optical measurement. Results are presented and discussed within the context of enhanced battery thermal management and improved system safety that are applicable to the application of lithium ion batteries across a number of domains including automotive and aerospace.

Item Type: Journal Article
Alternative Title:
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title: Journal of Energy Storage
Publisher: Elsevier
ISSN: 2352-152X
Official Date: June 2022
Dates:
DateEvent
June 2022Published
25 February 2022Available
20 February 2022Accepted
Volume: 50
Article Number: 104291
DOI: 10.1016/j.est.2022.104291
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 21 February 2022
Date of first compliant Open Access: 12 April 2022

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