浸没冷却液体对聚光三结电池电性能的影响  

Effect of immersion cooling liquids on electrical performance of triple-junction concentrator solar cells

作　　者：韩新月[1] 陈晓彬 郭永杰[1] 薛登帅 HAN Xinyue;CHEN Xiaobin;GUO Yongjie;XUE Dengshuai(School of Energy and Power Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2018年第5期537-542,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51776091;51306077);江苏省自然科学基金资助项目(BK20130518);江苏大学"青年骨干教师培养工程"项目

摘　　要：为把直接液浸冷却方式应用于采用密排III-V族电池组件的高倍聚光光伏系统,分析了适用于浸没冷却高倍聚光下III-V族聚光三结电池候选液体的种类、液膜厚度对Ga In P/Ga In As/Ge聚光三结电池电性能的影响,探索了该电池在液浸条件下电性能变化的机理.结果表明:不同液体液膜厚度对聚光三结电池短路电流的影响远大于对其开路电压的影响;随着浸没液体厚度的不断增加,聚光三结电池的效率呈现先升高后降低的趋势,在4.0 mm液厚时效率达到最大,其中化妆级白油在此厚度浸没下电池效率可提升8.99%.机理分析表明:薄液膜的存在降低了聚光三结电池表面的菲涅尔反射的光学效应和液体分子的吸附降低了电池表面复合速率的电学效应是引起电池效率提升的主要原因.To apply the direct liquid-immersion cooling to the high concentrating photovoltaic systems with densely packed III-V cells module,the effects of the candidate liquid type for immersing III-V triple-junction(TJ)solar cells cooling and the liquid film thickness on the electrical performance of GaInP/GaInAs/Ge TJ concentrator solar cells were investigated.The mechanism of the increasing efficiency of TJ solar cell in the presence of liquid layer was explored.The results show that the effect of liquid layer on short circuit current of TJ solar cell is much greater than that on open circuit voltage.With the increasing of liquid layer thickness,the efficiency of TJ solar cell is increased with latter decreasing,and the maximum efficiency is obtained for 4.0 mm liquid layer thickness.The efficiency of TJ solar cell with cosmetic grade white oil for 4 mm thickness is increased by 8.99%.The improvement is attributed to the optical effect and the electrical effect caused by the liquid layer on the solar cell surface,which are respectively connected with the reduction of light reflection and the decrease of surface recombination velocity due to the adsorption of liquid molecules.

关 键 词：聚光三结电池 太阳能光伏发电 高倍聚光光伏系统 液体浸没冷却 电性能 

分 类 号：TK514[动力工程及工程热物理—热能工程]