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Fire Technology

Erschienen in:

21.05.2020

Computed Tomography Analysis of Li-Ion Battery Case Ruptures

verfasst von: Lingxi Kong, Xiaosong Hu, Guan Gui, Yan Su, Michael Pecht

Erschienen in: Fire Technology | Ausgabe 6/2020

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Abstract

Battery explosion incidents hinder the development and application of Li-ion batteries. This paper describes the use of nondestructive computed tomography (CT) to analyze cylindrical Li-ion battery samples that underwent thermal runaway and exploded. Unlike destructive analysis methods, which can lead to a loss of battery structural information, CT scan allows direct observation of a battery’s internal structure without disassembly. In this study, two case studies of 20700 and 18650 batteries show that sidewall and bottom case rupture was caused by blockage of the battery vent region, which prevented the release of the generated gas. This work demonstrates the ability of CT for post-mortem incident analysis and the limitations of current vent design, and also gives insight to a safety issue with some cylindrical batteries.

Vorheriger Artikel Full-Scale Experimental Study on the Combustion Behavior of Lithium Ion Battery Pack Used for Electric Vehicle

Nächster Artikel An Experimental Study on Preventing Thermal Runaway Propagation in Lithium-Ion Battery Module Using Aerogel and Liquid Cooling Plate Together

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Titel: Computed Tomography Analysis of Li-Ion Battery Case Ruptures
verfasst von: Lingxi Kong
Xiaosong Hu
Guan Gui
Yan Su
Michael Pecht
Publikationsdatum: 21.05.2020
Verlag: Springer US
Erschienen in: Fire Technology / Ausgabe 6/2020
Print ISSN: 0015-2684
Elektronische ISSN: 1572-8099
DOI: https://doi.org/10.1007/s10694-020-00996-w

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