太阳电池非等宽主栅前电极栅线的优化设计  

OPTIMUM DESIGN OF FRONT ELECTRODE GRID WITH UNEQUAL WIDTH BUSBAR FOR SOLAR CELLS

作　　者：李凯 张宪民[1] 张翔 Li Kai;Zhang Xianmin;Zhang Xiang(Guangdong Key Laboratory of Precision Equipment and Manufacturing Technology,School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东省精密装备与制造技术重点实验室,广州510640

出　　处：《太阳能学报》2021年第1期69-76,共8页Acta Energiae Solaris Sinica

基　　金：广东省科技攻关项目(2015B020239001)。

摘　　要：为提高太阳电池转换效率,降低生产成本,分析太阳电池功率损失机制,建立非等宽主栅太阳电池总体相对功率损失模型。通过求解该模型得到太阳电池最佳前电极栅线形状尺寸参数。采用PC1D软件进行仿真分析得到太阳电池的光电转换效率,该结果与理论值匹配度较高;当主栅线数为2~6时,非等宽主栅结构太阳电池相比于典型的等宽栅线结构太阳电池,光电转换效率分别提高了0.10%、0.09%、0.10%、0.09%和0.09%;主栅线总体积分别减少了0.72、0.68、0.64、0.58和0.47 mm^(3);细栅线总体积的增加量不超过0.07 mm^(3)。表明非等主栅前电极栅线结构不仅提高了光电转换效率,也降低了银浆的使用量。In order to improve the conversion efficiency of solar cells and to reduce production costs,a fractional power loss model is developed through analyzing the power loss mechanism of solar cells. The optimized shape and size parameters of front electrode grid of the solar cell are obtained by solving the fractional power loss model. The conversion efficiency of solar cells can be obtained by using simulation software PC1D. The simulation results make a good agreement with that of theoretical analyses. Comparing with a solar cell having a constant width front electrode grid structure,when the number of the busbar is from 2 to 6,The conversion efficiency of a solar cell with an unequal width busbar structure is increased by 0.10%,0.09%,0.10%,0.09% and 0.09%;The total volume of busbars is decreased by 0.72,0.68,0.64,0.58 and 0.47 mm^(3);The increment of total volume of fingers is less than 0.07 mm^(3). It indicates that the front electrode grid structure with an unequal width busbar has a higher conversion efficiency and a lower silver paste usage.

关 键 词：太阳电池 优化 转换效率 相对功率损失 前电极栅线 

分 类 号：TM914[电气工程—电力电子与电力传动]