CN103681920B - 一种太阳能电池背板及其制造方法 - Google Patents

一种太阳能电池背板及其制造方法 Download PDF

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CN103681920B
CN103681920B CN201310690311.0A CN201310690311A CN103681920B CN 103681920 B CN103681920 B CN 103681920B CN 201310690311 A CN201310690311 A CN 201310690311A CN 103681920 B CN103681920 B CN 103681920B
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陈亦锋
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Abstract

本发明公开了一种太阳能电池背板及其制造方法，其特征在于，包括中间的基材层，所述基材层的上、下两面均设有含氟膜；所述含氟膜和基材层之间通过粘合层连接；其中，所述基材层由以下重量份数的组分组成：聚对苯二甲酸乙二醇酯80‑90份，抗紫外添加剂5‑15份；所述含氟膜由以下重量份数的组分组成：聚偏氟乙烯70‑80份，聚甲基丙烯酸甲酯5‑10份，二氧化钛5‑10份，氧化铋1‑2份。本发明方法制备的太阳能电池背板结构简单合理，阻隔性能优良。

Description

一种太阳能电池背板及其制造方法
技术领域
本发明属于太阳能电池背板领域，具体地，本发明涉及一种太阳能电池背板及其制造方法。
背景技术
随着不可再生能源的逐步减少以及矿物类资源生产、使用中产生的各种污染问题，各国都在用政策、法律的手段逐步加大对可再生能源和清洁能源的开发利用，并努力提高其在整个能源使用中对比例。在这些清洁和可再生能源中，太阳能是其中最重要的能源之一。目前太阳能设备常用的是太阳能电池板，它是将太阳能转化为电能的一个重要设备。该类产品使用年限一般是按照25年以上进行设计，要确保此类产品达到如此长的使用年限，就需要严格控制各组件的质量，而这些组件中太阳能电池背板的作用不容小觑，太阳能电池背板也称为太阳能电池背板膜、光伏背板、光伏背板膜、太阳能背板。其广泛应用于太阳能电池（光伏）组件，位于太阳能电池板的背面，对电池片起保护和支撑作用。
发明内容
本发明所要解决的技术问题是提供一种太阳能电池背板及其制造方法，该方法制备的太阳能电池背板结构简单合理，阻隔性能优良。
本发明解决上述技术问题所采用的技术方案是一种太阳能电池背板，包括中间的基材层，所述基材层的上、下两面均设有含氟膜；所述含氟膜和基材层之间通过粘合层连接；
其中，所述基材层由以下重量份数的组分组成：聚对苯二甲酸乙二醇酯80-90份，抗紫外添加剂5-15份；
所述含氟膜由以下重量份数的组分组成：聚偏氟乙烯70-80份，聚甲基丙烯酸甲酯5-10份，二氧化钛5-10份，氧化铋1-2份。
所述基材层的厚度为150-300μm；所述含氟膜的厚度为30-50μm。
所述抗紫外添加剂选自二氧化硅和二氧化钛的一种。
所述粘合层由丙烯酸酯组成。
所述的太阳能电池背板的制造方法，包括如下步骤：
（1）将聚对苯二甲酸乙二醇酯80-90份于80-90℃下干燥，并与抗紫外添加剂5-15份混合均匀，经双螺杆挤出机挤出，得到基材层混合物料，
（2）将上述的基材层混合物料经过双向拉伸，制备得到基材层；
（3）将聚偏氟乙烯70-80份，聚甲基丙烯酸甲酯5-10份，二氧化钛5-10份，氧化铋1-2份混合均匀，并经在180～300℃的温度下，于150-180转/分的转速下混合20-30分钟，得到混合均匀的物料；并经过双向拉伸，得到含氟膜；
（4）在所述步骤（2）制备的基材层两面分别涂上丙烯酸酯粘合剂；
（5）将两面涂有丙烯酸酯的基材层与含氟膜热压，固化，即制备得到本发明的太阳能电池背板。
本发明与现有技术相比，具有如下优点：
（1）本发明方法制备的太阳能电池背板阻隔性能优良。
（2）本发明方法工艺简单，生产成本低。
具体实施方式
为了更好地理解本发明的内容，下面结合具体实施例作进一步说明。应理解，这些实施例仅用于对本发明进一步说明，而不用于限制本发明的范围。此外应理解，在阅读了本发明所述的内容后，该领域的技术人员对本发明作出一些非本质的改动或调整，仍属于本发明的保护范围。
实施例1
实施例1
太阳能电池背板的制造方法，包括如下步骤：
（1）将聚对苯二甲酸乙二醇酯80份于80-90℃下干燥，并与二氧化硅5份混合均匀，经双螺杆挤出机挤出，得到基材层混合物料，
（2）将上述的基材层混合物料经过双向拉伸，制备得到基材层；
（3）将聚偏氟乙烯75份，聚甲基丙烯酸甲酯10份，二氧化钛5份，氧化铋2份混合均匀，并经在300℃的温度下，于180转/分的转速下混合20分钟，得到混合均匀的物料；并经过双向拉伸，得到含氟膜；
（4）在所述步骤（2）制备的基材层两面分别涂上丙烯酸酯粘合剂；
（5）将两面涂有丙烯酸酯的基材层与含氟膜热压，固化，即制备得到本发明的太阳能电池背板。
对比例
按照与实施例1相同的方法制备太阳能电池背板，其区别在于，所述步骤（1）中不使用二氧化硅。
性能测试
按照ASTM F1249测定水蒸气透过率，实施例1中的太阳能电池背板的水蒸气透过率为0.3g/m2d，对比例中的水蒸气透过率为0.7g/m2d；按照ASTM E313测定黄变指数，实施例1和对比例均小于等于0.2。因此，实施例1比对比例具有更好的阻隔性能。
如上所述，便可以较好地实现本发明。

Claims (2)

1.一种太阳能电池背板，其特征在于，包括中间的基材层，所述基材层的上、下两面均设有含氟膜；所述含氟膜和基材层之间通过粘合层连接；
其中，所述基材层由以下重量份数的组分组成：聚对苯二甲酸乙二醇酯80-90份，抗紫外添加剂5-15份；
所述含氟膜由以下重量份数的组分组成：聚偏氟乙烯70-80份，聚甲基丙烯酸甲酯5-10份，二氧化钛5-10份，氧化铋1-2份；
所述基材层的厚度为150-300μm；所述含氟膜的厚度为30-50μm；
所述抗紫外添加剂选自二氧化硅和二氧化钛的一种；
所述粘合层由丙烯酸酯组成。
2.一种权利要求1所述的太阳能电池背板的制造方法，其特征在于，包括如下步骤：
(1)将聚对苯二甲酸乙二醇酯80-90份于80-90℃下干燥，并与抗紫外添加剂5-15份混合均匀，经双螺杆挤出机挤出，得到基材层混合物料，
(2)将上述的基材层混合物料经过双向拉伸，制备得到基材层；
(3)将聚偏氟乙烯70-80份，聚甲基丙烯酸甲酯5-10份，二氧化钛5-10份，氧化铋1-2份混合均匀，并经在180～300℃的温度下，于150-180转/分的转速下混合20-30分钟，得到混合均匀的物料；并经过双向拉伸，得到含氟膜；
(4)在所述步骤(2)制备的基材层两面分别涂上丙烯酸酯粘合剂；
(5)将两面涂有丙烯酸酯的基材层与含氟膜热压，固化，即制备得到本发明的太阳能电池背板。
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CN108878566A (zh) * 2017-05-14 2018-11-23 成都才盖科技有限公司 一种双面含氟的太阳能电池板背板及其制备方法
CN108707300B (zh) * 2018-05-29 2020-05-08 宁波瑞德能源有限公司 一种高性能太阳能电池板背膜及其制备方法
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CN102765235A (zh) * 2012-07-26 2012-11-07 浙江歌瑞新材料有限公司 一种新型太阳能电池背板
CN102922843A (zh) * 2012-11-26 2013-02-13 山东东岳高分子材料有限公司 一种高粘结强度的太阳能电池背板膜及其制备方法
CN103311342A (zh) * 2013-05-22 2013-09-18 宁波长阳科技有限公司 一种太阳能电池背板膜及其制备方法

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Publication number Priority date Publication date Assignee Title
CN102765235A (zh) * 2012-07-26 2012-11-07 浙江歌瑞新材料有限公司 一种新型太阳能电池背板
CN102922843A (zh) * 2012-11-26 2013-02-13 山东东岳高分子材料有限公司 一种高粘结强度的太阳能电池背板膜及其制备方法
CN103311342A (zh) * 2013-05-22 2013-09-18 宁波长阳科技有限公司 一种太阳能电池背板膜及其制备方法

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