摘要
基于电池包底部托底工况的仿真,研究了铝合金底板不同厚度的性能,在满足要求的情况下,选出最优方案。通过RADIOSS软件建立电池包底部托底的仿真模型,分析完成后查看模组和底板的间距。初版方案下,模组和底板间距为2.08 mm,安全裕度较大,不利于轻量化。进行DOE试验,对铝底板厚度进行因子筛选,得到对刚度影响最大的因素。选取部分底板进行实物试验,并与模拟结果进行对比分析,验证仿真建模的准确性。根据底板和模组的间距和球位移的关系,选出底板上板厚度为2.50 mm、下板厚度为2.75 mm、肋的厚度为2.50 mm的方案,在此方案下,底板和模组间距为0.07 mm。通过研究,优化后方案在满足客户要求的前提下,质量减小了10%。此研究结果可以为铝合金电池包的底板设计和轻量化提供指导。
In this study,based on the simulation and analysis of the bottom-support working condition of the aluminum-alloy battery pack,efforts are made to explore the performance of aluminum-alloy bottom plates with different thicknesses.The optimal solution is selected,while meeting the requirements.The RADIOSS software is used to set up a simulation model of the bottom-support working condition of the aluminum-alloy battery pack;then,the distance between the module and the bottom plate is checked.In the initial scheme,the distance between the module and the bottom plate is 2.08 mm,which has a large safety mar-gin and is not conducive to lightweight.Besides,the DOE test is carried out to screen factors for the aluminum bottom plate’s thickness and identify those factors that have the greatest impact on its stiffness.A part of the bottom plate is selected for the physical test;the results are compared with the simulation results,in order to verify that the simulation model is accurate.Based on the distance between the bottom plate and the module and the displacement relationship of the ball,a scheme is selected,with the thickness of 2.50 mm for the upper plate,2.75 mm for the lower plate,and 2.50 mm for the reinforcement.In this scheme,the distance between the bottom plate and the module is 0.07 mm.After optimization,the weight of the aluminum-alloy battery pack’s bottom plate reduces by 10%,while meeting the requirements of customers.This study provides guidance for design and lightweight of the aluminum-alloy battery pack’s bottom plate.
作者
李欣
孔德佳
杨青
LI Xin;KONG Dejia;YANG Qing(Shanghai Lingyun Industrial Co.,Ltd.,Shanghai 201799)
出处
《机械设计》
北大核心
2025年第9期190-195,共6页
Journal of Machine Design
关键词
电池包
底部球击
DOE优化
试验验证
底板轻量化
battery pack
bottom ball impact
DOE optimization
test verification
lightweight of bottom plate
