Research on Dynamic Response Characteristics and Reliability of Power Battery Packs under Random Vibration Environments

With the rapid development of new energy vehicles (NEVs), the power battery pack, as a core component, has seen its structural safety become a critical factor in enhancing overall vehicle performance. This paper takes a specific power battery pack as the research subject and conducts comprehensive simulation studies on its dynamic characteristics and vibration environment adaptability using finite element simulation technology, thereby validating its structural reliability. Th rough the construction of a finite element model for the power battery pack, modal analysis, inertia force analysis, and random vibration analysis were systematically performed to evaluate structural stability and reliability under various vibration conditions. The findings indicate that the power battery pack demonstrates excellent dynamic response characteristics and vibration resistance under designed vibration loads, providing robust assurance for the safe operation of NEVs. The methodology and results presented in this study offer significant guidance for the optimized design of power battery packs.