Non-destructive Evaluation Method for Thermal Parameters of Prismatic Li-ion Cell Using Infrared Thermography

This work proposed a non-destructive evaluation method using IR camera for prismatic Li-ion cell to evaluate the thermal conductivity and the thermal contact resistance (TCR) for both in-plane and cross-plane directions. In this study, experiments were conducted using two 50-Ah cells and two 75-Ah c...

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Bibliographic Details
Published inQuantitative infrared thermography Vol. 20; no. 1; pp. 14 - 24
Main Authors Yixian, Duo, Dexin, Hou, Zewen, Dong, Shuliang, Ye
Format Journal Article
LanguageEnglish
Published Taylor & Francis 01.01.2023
Subjects
infrared thermography
Li-ion battery cell
Non-uniform heat transfer model
thermal conductivity
thermal contact resistance
three-state method
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Summary:This work proposed a non-destructive evaluation method using IR camera for prismatic Li-ion cell to evaluate the thermal conductivity and the thermal contact resistance (TCR) for both in-plane and cross-plane directions. In this study, experiments were conducted using two 50-Ah cells and two 75-Ah cells. The cross-plane parameters exhibit significant repeatability, as evidenced in three independent tests. However, the in-plane parameters could only be inferred within the best possible range of values. The cross-plane TCRs are negligible, whereas the in-plane TCRs are greater than 0.012 KW −1 m 2 and 0.016 KW −1 m 2 for the two individual cells.
ISSN:1768-6733
2116-7176
DOI:10.1080/17686733.2021.2010380