目的 烘箱射流风嘴对极片烘干的均匀性和一致性具有重要影响，拟改善干燥过程中由于射流压强分布不均导致的极片烘干质量不良问题。方法 利用SolidWorks软件对射流风嘴与极片间的空气流体域进行建模，基于k-ε湍流方程完成热风流场的数值仿真计算，根据流体仿真结果对射流风嘴结构进行优化设计，最后通过实验对数值仿真计算结果进行验证与完善。结果 经数值仿真优化后的极片与风嘴间压强分布较改进前有较大提升，在相同的测量位置处，仿真得到的压强差由20 Pa下降到了8 Pa，实验得到的压强差由21 Pa下降到11 Pa，在误差允许范围内，实验结果与仿真结果基本保持一致。结论 优化后的射流风嘴完善了射流压强分布，数值仿真研究对风嘴结构的优化设计具有重要的指导意义。

The work aims to avoid the poor quality of the pole piece drying due to the uneven distribution of the jet pressure during the drying process, because the oven jet nozzle has an important influence on the uniformity and consistency of the lithium battery pole piece drying. The air fluid domain between the jet nozzle and the pole piece was modeled by the SolidWorks software and the numerical simulation of warm air fluid field was calculated by the k-ε turbulence equation. The design of the jet nozzle structure was optimized according to the fluid simulation results and the experiment was carried out to verify and perfect the numerical simulation. The uniformity of pressure distribution between pole piece and air nozzle after numerical simulation optimization was greatly improved. The pressure difference obtained from simulation at the same test position was reduced from 20 Pa to 8 Pa, while the pressure difference obtained from the experiment was decreased to 11 Pa from 21 Pa. Within the error tolerance, the experimental results were basically consistent with the simulation results. The optimized jet nozzle has improved the pressure distribution, and numerical simulation research has important guiding significance for the optimal design of the jet nozzle structure.