噪声与振动控制2024，Vol.44Issue(3)：202-208,7.DOI:10.3969/j.issn.1006-1355.2024.03.031
无模组动力电池包振动特性研究
Study on Vibration Characteristics of Mode-free Power Battery Pack
摘要
Abstract
In order to investigate the vibration characteristics of a mode-free battery pack for an electric vehicle,two simplified finite element models of battery packs with different cell sizes and cell layouts were established.Based on the fi-nite element model of the battery pack,the static analysis and modal analysis of the two battery packs were carried out under three limit conditions.Based on the analysis results the improved design was performed on the battery pack.The results show that the cell size and cell layout in the power battery pack have significant influence on the vibration characteristics of the power battery pack.The upper cover stiffness of battery pack 1.0 is insufficient,the maximum stress and maximum defor-mation of the upper cover are large,and the natural frequency of the first order constrained mode is lower than the common road excitation frequency,which is likely to cause resonance of battery pack.The power battery pack 2.0 has good static characteristics,and the first-order natural frequency is higher than the common road excitation frequency,which can avoid resonance with road excitation.After the improvement of the upper cover,the static and vibration characteristics of the pow-er battery pack 1.0 can meet the requirements.Increasing the confined range of the battery pack can raise the first-order natu-ral frequency.关键词
振动与波/无模组动力电池包/振动特性/静力学分析/模态分析Key words
vibration and wave/mode-free power battery pack/vibration characteristics/static analysis/modal analysis分类
交通工程引用本文复制引用
吴昶,徐晓美,彭骏峰,王崴崴..无模组动力电池包振动特性研究[J].噪声与振动控制,2024,44(3):202-208,7.基金项目
国家自然科学基金资助项目(51605228) （51605228）
江苏省高等学校自然科学研究资助项目(23KJB460021) （23KJB460021）
江苏省产业前瞻与关键核心技术资助项目(BE2022053-2) （BE2022053-2）
