Lithium-ion batteries are considered an efficient energy source for current electric vehicles (EVs); however, the safety of these batteries is vital when it comes to large-scale deployment. Short circuit of batteries is one of the concerns as it can spread quickly within the battery module or pack if not controlled at the cell level. In this paper, single lithium-ion battery cell is investigated where mechanical abuse conditions are applied to investigate short circuits and propagation of failures due to short circuits. The numerical simulation tool LS-DYNA is used for the battery-layered model, each layer thickness is considered 0.3 mm, and concentrically layered formation is used for this purpose. An improved element size of 0.5 mm is used for steel casing and 1 mm for all other layers. A total of 27 layers are simulated in a single cell and the innermost radius is considered 1 mm. Displacement at short circuit, mean temperature at the short circuit, and mean maximum temperature change criterion are used to understand short circuit and propagation of failures. Simulation models are developed for quasi-static load analysis to understand the severity of failures, which can be used to reduce the risk of sequential failure of batteries in the battery pack.

锂离子电池被认为是当前电动汽车（EV）的高效能源；但是，这些电池的安全性对于大规模部署至关重要。电池短路是关注的问题之一，因为如果不受电池级别的控制，电池短路会迅速扩散到电池模块或电池组中。在本文中，对单个锂离子电池单元进行了研究，其中将机械滥用条件应用于调查短路和由于短路引起的故障传播。数值模拟工具LS-DYNA用于电池分层模型，认为每层厚度为0.3 mm，并且为此目的使用了同心分层结构。钢外壳使用的元素尺寸改进为0.5 mm，其他所有层的元素尺寸改进为1 mm。在单个单元中总共模拟了27层，并且最里面的半径被认为是1 mm。短路时的位移，短路时的平均温度以及平均最大温度变化准则用于了解短路和故障传播。开发了用于准静态负载分析的仿真模型，以了解故障的严重性，可用来降低电池组中电池顺序故障的风险。