Three-Dimensional Thermal Modeling of Internal Shorting Process in a 20Ah Lithium-Ion Polymer Battery
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Three-Dimensional Thermal Modeling of Internal Shorting Process in a 20Ah Lithium-Ion Polymer Battery
- 发表刊物：
- Energies
- 摘要：
- To better address the safety issues of a lithium-ion battery, understanding of its internal
shorting process is necessary. In this study, three-dimensional (3D) thermal modeling of a 20 Ah
lithium-ion polymer battery under an internal shorting process is performed. The electrochemical
thermal coupling scheme is considered, and a multi-scale modeling approach is employed. An
equivalent circuit model is used for characterizing the subscale electrochemical behaviors. Then, at
the cell scale, the electrical potential field and thermal field are resolved. For modeling the internal
shorting process, a block of an internal short is directly planted inside the lithium-ion battery. Insights
of the temperature evolutions and 3D temperature distributions are drawn from the simulations.
The e ects of shorting resistance, through-plane thermal conductivity, and mini-channel cold-plate
cooling are investigated with the simulations. A large amount of heat generation by a small shorting
resistance and highly localized temperature rise are the fundamental thermal features associated with
the internal shorting process. The through-plane thermal conductivity plays an important role in the
maximum temperature evolutions inside the battery cell, while the external cooling condition has a
relatively weak e ect. But the cold plate cooling can benefit lithium-ion battery safety by limiting the
high temperature area in the internal shorting process through heat spreading.
- 合写作者：
- Yubai Li, Zhifu Zhou, Weitao Wu
- 卷号：
- 13
- 页面范围：
- 1013
- 是否译文：
- 否
- 发表时间：
- 2020-02-24