干燥烘箱极片表面流场特性研究

Study on Surface Flow Field Characteristics of Drying Oven Electrode

极片表面流场的均匀性是影响锂电池极片生产质量的重要因素。为了提高锂电池极片生产效率,通过流体仿真软件对烘箱风刀进行流场数值模拟,对极片表面流场进行了研究。通过提取极片表面流场速度分布情况,量化分析极片表面的流场分布的均匀性。针对极片表面风速分布不均的现象,对干燥烘箱风刀进行了优化,为接下来的进一步烘箱结构优化做基础。结果表明,经过优化后的风刀,使极片表面流场的均匀性得到了改善,防止了烘干区回风均集中在两侧导致的中间干燥不足、两边过干的情况。

The uniformity of the flow field on the electrode surface is an important factor affecting the production quality of the electrode of lithium battery.In order to improve the production efficiency of lithium battery electrode,the flow field on the surface of the electrode was studied by the numerical simulation software.By extracting the velocity distribution of the flow field on the surface of the electrode,the uniformity of the flow field distribution on the surface of the electrode is analyzed quantitatively.In view of the uneven distribution of wind velocity on the surface of the electrode,the air knife of the drying oven was optimized,which is the basis for the next further optimization of the structure of the oven.The results show that the uniformity of the flow field on the electrode surface is improved by the optimized wind knife,and the insufficient drying and over-drying on both sides are prevented.