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首页> 外文会议>European photovoltaic solar energy conference >UNDERSTANDING THE CAUSES FOR CELL BREAKAGE DURING THE CELL INTERCONNECTING PROCESS – PART II
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UNDERSTANDING THE CAUSES FOR CELL BREAKAGE DURING THE CELL INTERCONNECTING PROCESS – PART II

机译：了解细胞互连过程中细胞断裂的原因–第二部分

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摘要

One of the many challenges facing module producers is reducing or eliminating cell breakage duringthe cell interconnecting phase of module production. This issue is especially important today due to the high priceand short supply of crystalline solar cells. The most common causes for cell breakage can be divided intomechanical, thermal, and thermo-mechanical stresses. The latter is caused by combining two materials withdissimilar thermal expansion coefficients, while subjecting the final assembly to a temperature differential. Currenttrends of thinner cells, larger cross section ribbon, and the elimination of lead, are adding to the difficulties moduleproducers face in regard to controlling breakage. Part I of this paper focused on the mechanical causes of cellbreakage while this paper, part II, will focus on thermal and thermo-mechanical stresses. This paper will study thestresses caused by temperature gradients during soldering, and discuss the impact these gradients have on themechanical properties of the cell. It will then compare and analyze how these stresses inter-relate regarding breakageand crystal damage, and recommend methods for reducing cell breakage during the "stringing process" in yourmodule factory.
机译：模块生产商面临的众多挑战之一是减少或消除电池在生产过程中的破裂 模块生产的单元互连阶段。由于价格高昂，今天这个问题尤为重要 以及晶体太阳能电池的短缺。造成细胞破裂的最常见原因可分为 机械，热和热机械应力。后者是由两种材料的结合引起的 不同的热膨胀系数，同时使最终组件承受温差。当前的 电池更薄，带状横截面更大以及消除铅的趋势，增加了难度模块 生产者在控制破损方面面临着挑战。本文的第一部分重点介绍细胞的机械原因 断裂，而本文第二部分将重点讨论热应力和热机械应力。本文将研究 焊接过程中温度梯度引起的应力，并讨论这些梯度对焊接的影响 电池的机械性能。然后，它将比较和分析这些应力与断裂之间的相互关系 和晶体损坏，并建议在您的“穿线过程”中减少细胞破裂的方法 模块工厂。

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