锂离子电池电芯铝塑膜外壳冲压成形工艺  

Stamping process of aluminum plastic film shell for Li-ion battery core

作　　者：赵越[1] 肖艳春[1] 崔佳[1] 于盼[1] 关玉明[1] 

机构地区：[1]河北工业大学机械工程学院,天津300130

出　　处：《锻压技术》2017年第7期48-54,共7页Forging & Stamping Technology

基　　金：天津市科技特派员项目(14JCTPJC00532)

摘　　要：通过正交试验,应用有限元仿真,对影响锂离子电池铝塑膜外壳冲压成形质量的各工艺参数的显著性进行分析,得出凸模圆角半径与凹模摩擦系数的选择对铝塑膜冲压工艺质量影响较大。利用数值模拟以及BP神经网络与遗传算法极值寻优,对锂离子电池铝塑膜的冲压成形工艺参数(凸模圆角半径、冲压速度、凹模摩擦系数以及压边力)进行优化。优化后的工艺参数使得锂离子电池铝塑膜的最大减薄率减少10%。实验证明,成形铝塑膜外壳的边角位置减薄最为严重,是影响成形铝塑膜外壳整体质量的关键性因素,可以作为衡量锂离子电池铝塑膜外壳成形质量检验的标准。The significance of each process parameter which effects on stamping forming quality of aluminum plastic film shell for lithium ion battery was analyzed by orthogonal test and FE simulation,and it shows that the punch fillet radius and die friction coefficient are the most significant.Then,the process parameters including punch fillet radius,stamping speed,die friction coefficient and blank holder force were optimized by numerical simulation and extremum seeking method combining BP neural network with genetic algorithm.Therefore,the maximum thinning rate of aluminum plastic film of lithium ion battery is reduced by 10% after optimization.Experiments show that the thinning rate of the corner position of aluminum plastic film shell is the maximum and the key factor affecting the overall quality of aluminum plastic film shell.Thus,it can be used as quality inspection standard of aluminum plastic film shell for lithium ion battery.

关 键 词：锂离子电池 铝塑膜 冲压 正交试验 BP神经网络 遗传算法 

分 类 号：TG386[金属学及工艺—金属压力加工] TM912[电气工程—电力电子与电力传动]