摘要
基于电池包底部球击工况的仿真,以预浸料模压成型(PCM)底板替代钢底板,以实现电池包底板的减重。通过RADIOSS软件建立电池包底部球击仿真模型,分析球击完成后底板为钢板和PCM板时,应力应变分布和模组变形情况。钢板方案下,模组变形量为2.03 mm,PCM方案下,模组变形量为2.62 mm,PCM板方案较差,不满足要求,进行试验设计(DOE),对PCM板材料参数进行因子筛选,得到最优方案。选取部分底板进行试验,并与模拟结果进行对比分析,验证复材仿真建模的准确性。将优化后的PCM底板代入整包模型再次仿真,模组变形量为2.27 mm,结果满足模组变形量小于2.5 mm的要求。通过研究,PCM底板可以替代钢板,在满足要求的前提下,质量减轻40%。此研究可以为电池包的底板设计和轻量化提供指导。
Based on the simulation of the ball impact condition at the bottom of the battery pack,the PCM base plate was used to replace the steel base plate to reduce the weight of the battery pack base plate.By establishing a simulation model of ball impact on the bottom of the battery pack in RADIOSS software,the stress and strain distribution and deformation of the battery pack after the ball impact were analyzed when the base plate of the battery pack were steel plate and PCM plate.The deformation of the module is 2.03 mm in the steel plate scheme,and the deformation of the module is 2.62 mm in the PCM scheme.The PCM plate scheme is weaker and does not meet the requirement.The DOE test was carried out to screen the material parameters of the PCM plate to obtain the optimal scheme.A part of the base plate was selected for physical test,and the results were compared with the simulation results to verify the accuracy of the composite material simulation modeling.The optimized PCM base plate was substituted into the whole package model for simulation.The deformation is 2.27 mm,meeting the requirement that the module deformation is less than 2.5 mm.The PCM plate can replace the steel plate,and the weight can be reduced by 40%under the premise of meeting customer requirements.The research can provide guidance for the base plate design and lightweight of the battery pack.
作者
孔德佳
李彦波
李欣
KONG Dejia;LI Yanbo;LI Xin(Lingyun Industrial Co.,Ltd.,Shanghai 201799,China;Hebei Province Automotive Safety Parts Technology Innovation Center,Baoding Hebei 072750,China)
出处
《电源技术》
CAS
北大核心
2023年第10期1341-1345,共5页
Chinese Journal of Power Sources
关键词
电池包
底部球击
DOE优化
试验验证
底板
轻量化
battery pack
ball impact on the bottom
DOE optimization
test verification
base plate
lightweight
