Research on Crash Simulation and Safety of Automotive Power Battery

In order to analyze the safety performance of the power battery pack of a certain model and optimize it. The finite element model of the battery pack is constructed by Hyperworks software, and then the pre-processing of the finite element model is carried out, which includes the simplification of the model, mesh partitioning, parameter selection and so on. The processed model is used to simulate and analyze the mechanical impact, random vibration, and side rigid column collision of the battery pack, and explore the specific situation of the damage of the power battery pack. Under the current GB, in combination with E-NCAP, a simulation program is provided for the battery pack to be subjected to side rigid column collision. In order to reduce the mass of the automotive power battery pack under certain working conditions, parametric modeling of its components and parameter optimization combined with multi-objective genetic algorithms are carried out, and the results show that the mass of the power battery pack has been reduced to a certain extent under the premise of improving its safety performance.