EVA胶膜对晶硅太阳电池的封装特性研究  

Encapsulation Effect of the EVA Film on the Silicon Photovoltaic Solar cell

作　　者：赖伟东[1] 吴翠姑 刘莹 赵亚军[1] 张华程 董国义[1] Lai Weidong;Wu Cuigu;Liu Ying;Zhao Yajun;Zhang Huacheng;Dong Guoyi(College of Physics Science and Technology,Institute of Life Science and Green Development,Hebei University,Baoding,Hebei 071002,China;State Key Laboratory of Photovoltaic Materials&Technology,Yingli Group Company Limited,Baoding,Hebei 071051,China;State Key Laboratory of Photovoltaic Materials&Technology,Yingli Energy(China)Limited Company,Baoding,Hebei 071051,China)

机构地区：[1]河北大学生命科学与绿色发展研究院物理科学与技术学院,河北保定071002 [2]英利集团有限公司光伏材料与技术国家重点实验室,河北保定071051 [3]英利能源(中国)有限公司光伏材料与技术国家重点实验室,河北保定071051

出　　处：《信息记录材料》2020年第6期1-3,共3页Information Recording Materials

基　　金：国家重点研发计划项目(2018YFB1500601);河北省重点研发计划项目新能源产业技术创新专项(20314306D)。

摘　　要：EVA胶膜经由真空层压工艺对晶硅电池片进行封装,其是光伏组件实用化的基础。本文基于封装体系微观影像,发现EVA胶膜与硅电池片形成致密粘结界面。热相变分析表明EVA胶膜须工作在256℃以下,超过该温度则EVA共聚物分子键分解生成醋酸,影响粘结界面封装强度;超过424℃,EVA胶膜分子键断裂,直至492℃完全失重。本文所得结果可为光伏组件封装工艺的优化及废弃组件回收工艺的开发提供借鉴。The EVA films encapsulate the silicon solar cell through vacuum lamination process for manufacturing the photovoltaic modules.In this article,microgram detection on such encapsulating system indicates that the compact bonding interface is generated between the solar cell and the EVA film.Through thermal phase change investigation,it presents that the EVA film keeps complete below 256℃.In the temperature range from 256℃ to 424℃,the molecular chain of EVA film transform to acetic acid,and the bonding strength of the interface would be weakened.In 424℃-492℃,the EVA copolymer films decompose and reach total weight loss.Results in this article can be applied for improving the manufacturing and recovering technique of the silicon solar cell modules.

关 键 词：EVA胶膜 封装 晶硅太阳电池 热相变 

分 类 号：TM914.41[电气工程—电力电子与电力传动]