钠硫储能电池保温层二次优化设计

摘要

保温层的设计对保证钠硫电池处于最佳运行状态至关重要.为了解决一维热传导模型结果与实验值相差过大的问题,基于三维导热理论模型,采用有限元软件ANSYS Workbench建立了保温层实体模型,数值模拟了各层保温材料的温度分布情况,并提出了一种钠硫电池保温结构二次优化设计方案.结果表明:采用三维模型的计算结果与实验值较接近;优化保温层材料与结构后,保温结构厚度缩减了37.5％,且最外层温度明显减低.实验结果可为储能电池保温结构的二次优化设计提供技术参考.%The design of the thermal insulation layer is very important to ensure that the sodium-sulfur batteries are in the best operating condition.Based on the three-dimensional heat conduction theory model,the entity model was established and the temperature distribution of each layer insulation material was simulated by ANSYS Workbench to solve the problem that the difference between the result of one dimensional heat conduction model and experimental value was too large.Furthermore,the second optimal design scheme of a thermal insulation structure for the sodium sulfur battery was proposed.The results indicate that the calculated result of the three dimensional model is relatively close to the experimental value.After optimizing the material and structure of the thermal insulation layer,the thickness is reduced by 37.5％,and the temperature of the outermost layer is obviously reduced.The result can provide the technical reference for the second optimization design of the thermal insulation layer of the storage battery.