Deformation and failure mechanisms of 18650 battery cells under axial compression
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- 作者：Juner Zhua ; zhujuner@mit.edu" class="auth_mail" title="E-mail the corresponding author ; Xiaowei Zhanga ; zhangxv@mit.edu" class="auth_mail" title="E-mail the corresponding author ; Elham Sahraeia ; b ; elhams@mit.edu" class="auth_mail" title="E-mail the corresponding author ; Tomasz Wierzbickia ; wierz@mit.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Lithium-ion battery ; Axial compression ; FE simulation ; Analytical model ; Micro CT scan
- 刊名：Journal of Power Sources
- 出版年：2016
- 出版时间：30 December 2016
- 年：2016
- 卷：336
- 期：Complete
- 页码：332-340
- 全文大小：2282 K
文摘
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Short circuit happens when an 18650 battery cell is axially compressed to 4 mm.
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Deformation is localized in the positive terminal/endcap region.
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Axial compression of jellyroll creates a circumferential crack in the separator in top region.
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Deformation of shell casing and jellyroll can be simulated by FE model and explained analytically.