A simplified mathematical model for heating-induced thermal runaway of lithium-ion batteries

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Abstract

The present study aims to develop a simplified mathematical model for the evolution of heating-induced thermal runaway (TR) of lithium-ion batteries (LIBs). This model only requires a minimum number of input parameters, and some of these unknown parameters can be obtained from accelerating rate calorimeter (ARC) tests and previous studies, removing the need for detailed measurements of heat flow of cell components by differential scanning calorimetry. The model was firstly verified by ARC tests for a commercial cylindrical 21700 cell for the prediction of the cell surface temperature evolution with time. It was further validated by uniform heating tests of 21700 cells conducted with flexible and nichrome-wire heaters, respectively. The validated model was finally used to investigate the critical ambient temperature that triggers battery TR. The predicted critical ambient temperature is between 127 °C and 128 °C. The model has been formulated as lumped 0D, axisymmetric 2D and full 3D to suit different heating and geometric arrangements and can be easily extended to predict the TR evolution of other LIBs with different geometric configurations and cathode materials. It can also be easily implemented into other computational fluid dynamics (CFD) code.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Lithium ion batteries -- Mathematical models
Journal or Publication Title: Journal of The Electrochemical Society
Publisher: Electrochemical Society, Inc.
ISSN: 0013-4651
Official Date: 6 January 2021
Dates:
Date
Event
6 January 2021
Published
22 December 2020
Accepted
Volume: 168
Number: 1
Article Number: 010502
DOI: 10.1149/1945-7111/abd64c
Status: Peer Reviewed
Publication Status: Published
Re-use Statement: "This is an author-created, un-copyedited version of an article accepted for publication/published in Journal of The Electrochemical Society. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1149/1945-7111/abd64c”
Access rights to Published version: Restricted or Subscription Access
Copyright Holders: © 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited
Date of first compliant deposit: 7 January 2021
Date of first compliant Open Access: 8 January 2021
RIOXX Funder/Project Grant:
Project/Grant ID
RIOXX Funder Name
Funder ID
749512
Horizon 2020 Framework Programme
URI: https://wrap.warwick.ac.uk/146838/

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