Abstract

Lithium-ion (Li-ion) battery systems are used for electric vehicles (EV) in the automotive industry due to their lightweight and high energy density. The battery modules are composite structures with significant geometry and material non-linearity. Their behaviour under mechanical loading is important for EV performance and crashworthiness design. In this study, quasi-static (0.06 mm/s) and low speed (50 mm/s) crush tests were conducted on commercial vehicle Li-ion battery modules to study their response. Two steel impactors, namely, a 60° wedge and a hemispherical end punch were used to investigate the force-displacement-voltage responses of the modules. Based on the test data, the effect of loading and boundary conditions, i.e. crush velocity, the presence of a cover plate and shape of impactor on the overall response of the battery modules was analysed.

摘要

锂离子 (Li-ion) 电池系统因其重量轻且能量密度高而被用于汽车行业的电动汽车 (EV)。电池模块是具有显着几何形状和材料非线性的复合结构。它们在机械负载下的行为对于 EV 性能和耐撞性设计很重要。在这项研究中，对商用车锂离子电池模块进行了准静态 (0.06 mm/s) 和低速 (50 mm/s) 挤压试验，以研究它们的响应。两个钢质冲击器，即 60° 楔形和半球形端冲头用于研究模块的力-位移-电压响应。基于测试数据，加载和边界条件的影响，即破碎速度，