基于流场数值模拟的锂电池极片干燥箱结构改进

Structural Modification of Dryer for Lithium Battery Film Based on Flow Field Numerical Simulation

为提高某厂干燥箱的工作性能,通过流场数值模拟方法,采用标准k-ε两方程模型,以现场测试数据为边界条件,对其风速场进行了研究。根据其稳态流场特点并结合厂家改进目标完成了干燥箱的结构改进。通过对比分析新旧两种结构的流动特征,确定了新的干燥箱结构。最后给出了有利于风速场均匀分布的进排风口位置、大小、数量等的设计思路,为提高能量利用效率及极片干燥质量提供了依据。

To increase the working performance of a dryer,based on flow field numerical simulation method and using field test data as the boundary conditions and using k-εtwo-equation turbulence model as the control equation,a velocity field of air was studied.According to the steady state velocity field of air and the manufacturer＇s modification requests,the structural modification of the dryer was carried out.The comparative study on the flow characteristics between the two structures was developed and a new structure was established.Lastly,the design principles about the position,dimension and quantity of air inlet and air outlet were proposed,which was propitious to the uniform distribution of the velocity field.It provides important basis for increasing the capacity usage ratio and the drying quality of film.