热风-极片涂层的耦合传热传质特性研究

常珠; 王佳骏; 麻宏强

doi:10.19554/j.cnki.1001-3563.2026.07.036

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包装工程（技术栏目） ›› 2026, Vol. 47 ›› Issue (7) : 315-326. DOI: 10.19554/j.cnki.1001-3563.2026.07.036

国防装备

热风-极片涂层的耦合传热传质特性研究

常珠¹, 王佳骏², 麻宏强^2,*

作者信息 +

Coupling Heat and Mass Transfer Performance between Hot Wind and Electrode Coatings

CHANG Zhu¹, WANG Jiajun², MA Hongqiang^2,*

Author information +

文章历史 +

摘要

目的改善电池极片湿涂层的耦合干燥特性。方法基于动网格方法和温、湿度场耦合理论,建立对流干燥过程湿涂层干燥性能分析模型,通过文献实验值验证了模型的可靠性,其误差最大不超过14.7%。随后,对比分析了不同控制条件下湿涂层耦合干燥性能的影响。最后,对比分析了不同风口速度下湿涂层的热流密度和传质系数的分布规律。结果热流密度值随热风速度和热风温度的增大以及相对湿度的减小而增大,而净热流密度变化不规律,这与湿涂层对流换热吸热和本身蒸发放热的综合影响有关。烘箱风口温度变化对湿涂层热流密度的影响（湿涂层本身温度的影响）最大,变化可达14.5%。随烘箱风口速度增大,湿涂层的热流密度和传质系数显著增大,风口正下方局部区域热质耦合过程最强烈。结论工程建议通过调整烘箱风口温度和风速以满足湿涂层的温度干燥需求,进而改善电池极片湿涂层的耦合干燥特性。本研究可为电池极片湿涂层干燥性能的优化提供理论依据。

Abstract

The work aims to improve the coupling drying performance of wet coatings of electrodes. An analysis model of drying performance was established for wet coatings in convective drying process based on the dynamic mesh method and the coupling theory of temperature and humidity fields and the model was reliable with the maximum error less than 14.7% through comparison to experimental data of literature. Subsequently, the coupling drying performance was analyzed under different control conditions. Finally, the distributions of heat flux and mass transfer coefficient were further analyzed under different control conditions. The heat flux of wet coatings increased with the increase of velocity and temperature and the decrease of relative humidity. The net heat flux changed irregularly because its value was related to convective heat transfer and evaporation processes. Based on this model, the change of temperature had the greatest impact on the heat flux of wet coatings (it was equal to the effect on temperature of wet coatings), with this variation as 14.5%. The heat flux and mass transfer coefficient of wet coatings increased with the increase of velocity at the wind knives, and the coupling drying process was the most significant for local region directly below the wind knives. It is recommended to adjust the temperature and velocity to meet the drying requirements for the temperature of wet coatings. The above research can provide theoretical basis for improvement of coupling drying performance for wet coatings.

导出引用

常珠, 王佳骏, 麻宏强. 热风-极片涂层的耦合传热传质特性研究[J]. 包装工程. 2026, 47(7): 315-326 https://doi.org/10.19554/j.cnki.1001-3563.2026.07.036

CHANG Zhu, WANG Jiajun, MA Hongqiang. Coupling Heat and Mass Transfer Performance between Hot Wind and Electrode Coatings[J]. Packaging Engineering. 2026, 47(7): 315-326 https://doi.org/10.19554/j.cnki.1001-3563.2026.07.036

中图分类号： TB43

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