基于振动仿真与结构优化的双层铝型材动力电池系统轻量化及可靠性研究

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中图分类号：U467；U469.7 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250090

Abstract：To enhance thedriving range of electric vehicles，this study focuses on the co-optimization of the lightweightdesignandhighenergydensityforpowerbaterysystems.Targetingadouble-layeraluminumprofilepower baterysystem，an integrated dual-layer modulearchitecture combining lightweightconstructionand large capacityis proposed，witha particular emphasisoninvestigating the structural failureof thesecond-layer bracket mounting angle underrandomvibration loads.Through finiteelement simulationand experimental testing，themodal-coupling failure mechanismisrevealed.Optimizationisthenconductedusing topologyreconstructionandgradientreinforcement strategies.The results demonstrate：after optimization， the Root Mean Square （RMS） stress in the Z -directionatcritical connection areas decreases by 37.5% ，the peak vatare of Misesequivalent stress issignificantly lower than the limit specifiedintheGB/T31467.3—2O15standard（one-thirdofthematerial’syieldstrength），andthevibrationresponses in all 3 axes meet the safety criteria.

Keywords：Power batterysystem，Double-layer modules，Aluminum profile，Lightweight design， Randomvibrationsimulation

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键部件[1-3]，其安全性与可靠性直接影响车辆运行性能及乘员安全[4-7]。（剩余5343字）