Development of a drop test methodology for solar cells with FEM simulations

F. Kraemer, S. Wiese
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Abstract

The handling of photovoltaic cells is getting a growing concern. Due to the significant fraction of the material costs on the overall costs of solar wafers the cell thickness was reduced from initially 300 µm down to 200 µm or even 150 µm. At the same time, the size of typical cells remained at 156 × 156 mm2. Thus, solar cells have the same thickness like microelectronic chips but their size is about 10 to 15 times higher. Due to this bad aspect ratio, cells are fragile and breakage is an often observed problem during cell handling in common production lines.
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太阳能电池跌落试验方法的发展与有限元模拟
光伏电池的处理越来越受到关注。由于材料成本占太阳能晶圆总成本的很大一部分,电池厚度从最初的300µm减少到200µm甚至150µm。同时,典型细胞的大小保持在156 × 156 mm2。因此,太阳能电池具有与微电子芯片相同的厚度,但其尺寸约为微电子芯片的10至15倍。由于这种糟糕的纵横比,电池是脆弱的,在普通生产线上处理电池时经常观察到破损的问题。
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