抗隐裂光伏组件的研究与应用

Application of photovoltaic modules resistant to hidden cracks

针对光伏组件失效现象中隐裂的问题,对光伏组件封装材料互联条和铝边框结构进行研究,分析了隐裂的原因,提出了降低光伏组件中电池片在外力作用时出现隐裂的方案。实验研究了不同互联条拉伸比例、互联条有无弯折、铝边框有无横梁等条件对组件隐裂的影响。实验结果表明,设置合理的互联条拉伸比例、互联条弯折、铝边框加横梁等措施均有助于降低电池片的隐裂比例,提升光伏组件的可靠性。

This study investigated the interconnection bar and aluminum frame structure used in the packaging materials of photovoltaic modules to reduce the problem of hidden cracks in the failure of photovoltaic modules.By analyzing the reasons of hidden cracks in photovoltaic modules,a scheme to reduce the hidden cracks of photovoltaic modules under external force was proposed.The influence of the photovoltaic modules on the hidden crack was experimentally studied with different tensile ratio of the interconnecting bar,with or without the bending of the interconnecting bar and with or without the beam on the aluminum frame.Experiments revealed that setting reasonable tensile ratio of the interconnecting bar,bending degree of interconnecting bar,aluminum frame,and crossbeam,among other measures,could help in reducing the percentage of hidden cracks of photovoltaic modules and improve the reliability of photovoltaic modules.