Taking the development process of a new energy electric vehicle battery pack for a certain brand as an example, the paper comprehensively considers the random vibration and impact generated during the driving process due to uneven roads and bumps. Combined with finite element simulation analysis technology and from the perspectives of safety and reliability, the battery pack is studied and analyzed. The research first conducts a static strength analysis on the battery pack from the perspectives of static compression and drop. Then, a dynamic analysis is conducted on the battery pack in terms of random vibration. According to the simulation results, it was found that not only did this battery pack exhibit local failure in the Z direction during random vibration testing, but there were also other design issues and failure conditions. Subsequently, optimization treatment was carried out for the various failure issues identified, and a secondary analysis was conducted on the results after optimization until the design requirements were met. The methods and processes used in this study can provide reference for the trial production and testing of battery pack samples, as well as electrical safety design, contact protection design, and fatigue life prediction.
万方数据
维普
