n型电池组件热循环应力模拟以及优化  

Simulation and optimization of thermal cycling stress of n-type solar module

作　　者：许涛 张树德 顾浩 毛立中 张光春 XU Tao;ZHANG Shude;GU Hao;MAO Lizhong;ZHANG Guangchun(CSI Solar Co.,Ltd.,Suzhou Jiangsu 215129,China)

机构地区：[1]阿特斯阳光电力集团股份有限公司,江苏苏州215129

出　　处：《电源技术》2024年第11期2315-2321,共7页Chinese Journal of Power Sources

基　　金：国家重点研发计划项目(2022YFB4200900)。

摘　　要：针对n型TOPCon组件的抗热循环应力性能,结合热循环测试与数值模拟,分析出抗热循环应力性能的影响因素。得益于对称的结构,双玻组件的主栅热循环应力明显小于单玻组件,在热循环测试后双玻组件未发生功率衰减与EL发黑。而单玻组件的正面主栅热循环应力大于背面,因此热循环应力失效发生在电池正面。基于分析结果,对TOPCon电池的电极图形进行优化,将正面主栅线宽度从36μm增加到48μm,单玻组件在热循环测试后的功率衰减与EL发黑情况得到有效改善,抗热循环应力性能提高。On account of the thermal cycling stress resistance performance of n-type TOPCon solar module,the thermal cycling test and numerical simulation were combined to analyze the influence factors in this report.Benefiting from the symmetrical structure,the busbar thermal cycling stress of double-glass solar module was much smaller than the single-glass module.Therefore,the double-glass module did not suffer power degradation and electroluminescence darkening after thermal cycling test.Besides,the front busbar thermal cycling stress of single-glass module was higher than the rear side,so the thermal cycling stress failure occurred on the front side.Based on the analysis results,the electrode pattern of TOPCon cell was optimized.Along with the front busbar width increase from 36μm to 48μm,the power degradation and electroluminescence darkening of single-glass module after thermal cycling test were significantly improved,which meant that the thermal cycling stress resistance performance was improved.

关 键 词：TOPCon 太阳能组件 热循环应力 数值模拟 

分 类 号：TM914[电气工程—电力电子与电力传动]