锂电池极片干燥系统耗能分析

发布时间：2018-05-23 07:27

本文选题：极片 + 干燥　；参考：《热科学与技术》2015年06期

【摘要】：介绍了锂电池极片干燥系统的组成及工作原理。根据热力学第一定律,建立了干燥系统的能量平衡分析模型。该模型描述了极片基材和涂层的升温耗能、溶剂蒸发相变耗能、干燥介质加热耗能、系统通风耗能的计算方法及其与系统总投入能之间的平衡关系。以水溶剂负极涂层的典型工况干燥过程为例进行了实际分析计算。结果表明:系统的主要耗能用于干燥介质升温,占系统总耗能的93.30%;干燥介质的能量中,用于基材、干涂层升温部分甚微,分别占0.14%和0.21%,另有6.74%用于溶剂耗能;而系统通风耗能主要用于克服干燥系统的阻力和输送干燥介质,且其在总能耗中所占比例不高,为6.70%。分析了供风量变化、极片走带速度变化等变工况与系统各项耗能的关系。为实际干燥过程中合理选择加热器功率和风机选型提供了参考依据。
[Abstract]:The composition and working principle of electrode drying system for lithium battery are introduced. According to the first law of thermodynamics, the energy balance analysis model of drying system is established. The model describes the energy dissipation of the substrate and coating, the phase change of solvent evaporation, the heating of drying medium, the energy dissipation of ventilation system and the balance between the energy consumption and the total input energy of the system. The drying process of water solvent anode coating under typical conditions is taken as an example. The results show that the main energy consumption of the system is used for drying medium heating, which accounts for 93.30% of the total energy consumption of the system, and the dry coating is used in the drying medium, in which the dry coating has little heating up, accounting for 0.14% and 0.21%, respectively, and 6.74% for solvent energy consumption. The ventilation energy consumption of the system is mainly used to overcome the resistance of the drying system and to transport the drying medium, and its proportion in the total energy consumption is not high (6.70%). The relationship between the variation of air supply rate and the velocity of the polar strip and the energy consumption of the system is analyzed. It provides a reference for selecting heater power and fan selection in actual drying process.
【作者单位】：燕山大学车辆与能源学院;唐山钢铁集团有限公司;
【基金】：河北省高等学校自然科学研究指导资助项目(Z2013029) 燕山大学博士基金资助项目(B762);燕山大学青年教师自主研究计划课题资助项目(13LGA016)
【分类号】：TM912

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