锂电池极片涂布机NMP回收系统的红外辐射研究

目前锂电池极片涂布过程中NMP回收系统的结构面临很大问题,其中包含了真空以及红外辐射加热技术。针对真空系统,分析了其对涂布机工艺的影响,通过对NMP回收系统的烘干需求分析,采用层次分析法确定了最适合本系统的红外辐射加热器类型;对回收气态NMP过程进行了数值模拟,得到了系统流畅性能的仿真结果;通过红外辐射加热器加热极片的多组小实验及数据图表对烘干的时间、布置方式等参数进行了确定。对NMP溶剂的回收稳定及效率、干燥的效果及极片导电性能有重大的影响。

Study on Infrared Radiation of NMP Recovery System in Lithium Battery Pole Piece

The structure design of the NMP recovery system in the lithium battery pole piece coating process has many technology difficulties, including the vacuum and infrared radiation heating technology. For vacuum system, after the analysis of its impact on the coating process, and the drying needs of the NMP recovery system, through the analytic hierarchy process, the most suitable infrared radiation heater type can be determined. The process of recovering gaseous NMP is numerically simulated, and the simulation results of the system flow performance are obtained. The parameters of the drying time, arrangement mode and other parameters are determined by the multi group experiments of infrared radiation heater and the data chart. It has a great influence on the recovery of NMP solvent, stability and efficiency, drying effect and the conductive property of the pole piece.