Research on collision simulation analysis of vehicle power battery based on LS-DYNA

With the increasing popularity of electric vehicles, the safety of power batteries has become a critical concern. To assess the safety of power batteries during collisions, this study employs finite element analysis for comprehensive simulation research. Initially, a dynamic-based finite element model of power batteries is developed. Subsequently, an extrusion simulation is conducted on battery modules to evaluate their deformation behavior during compression. Subsequently, three types of collisions are simulated: side impact, rear-end collision, and bottom collision, with their safety properties analyzed. Simulation results indicate that bottom collision causes the greatest deformation of power batteries, reaching 3.02mm, yet it remains within the safe range. This suggests that further optimization of the lower floor and internal bracket structure of power batteries is essential to improve their safety.