串联电阻对不均匀铜铟镓硒电池性能的影响

发布时间：2018-01-13 09:21

本文关键词：串联电阻对不均匀铜铟镓硒电池性能的影响　出处：《太阳能学报》2015年07期 　论文类型：期刊论文

【摘要】：由于铜铟镓硒太阳电池的不均匀性以及电池输出特性的非线性,现有表征大面积电池的加权平均效率需要进行修正以便更好反映光伏组件的效率。由于串联电阻的增加常被认为可改善电池均匀性,因此本文针对串联电阻的影响进行重点研究。本文基于太阳电池模型,假定大面积太阳电池可看作是多个小面积太阳电池单元并联而成的太阳电池单元组件。计算结果表明,并联光伏组件的效率比加权平均效率低;提高光伏组件的串联电阻能在一定程度上改善电池不均匀性,但未必能提高光电转换效率,这有赖于光伏组件的不均匀程度和其本身的串联电阻大小;当光伏组件本身的均匀性较好且串联电阻也较小时,提高光伏组件的串联电阻能提高光伏组件效率。
[Abstract]:Due to the inhomogeneity of copper indium gallium selenium solar cells and the nonlinearity of the output characteristics of the cells. The existing weighted average efficiency of large area cells needs to be modified to better reflect the efficiency of photovoltaic modules. The increase of series resistance is often considered to improve the uniformity of the cells. Therefore, this paper focuses on the effect of series resistance. This paper is based on solar cell model. It is assumed that large area solar cells can be regarded as several solar cell units connected in parallel with small area solar cells. The calculation results show that the efficiency of parallel photovoltaic cells is lower than that of weighted average. Increasing the series resistance of photovoltaic module can improve the cell nonuniformity to some extent, but not necessarily improve the photoelectric conversion efficiency, which depends on the non-uniformity degree of photovoltaic module and its series resistance. When the uniformity of photovoltaic module itself is better and the series resistance is smaller, the efficiency of photovoltaic module can be improved by increasing the series resistance of photovoltaic module.
【作者单位】：清华大学材料学院先进成形制造教育部重点实验室;
【分类号】：TM914.4
【正文快照】： 0引言铜铟镓硒太阳电池作为薄膜太阳电池的代表之一,目前实验室光电转换效率高达21.7%(面积0.5 cm2)[1],小面积组件效率高达17.4%(面积16 cm2)[2],具有良好的产业化前景。然而,商业化生产的电池面积约需达到1 m2,远大于实验室电池面积,这便对电池大面积均匀性提出了考验。虽然

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