CN103681923A - 斜射型反光焊带 - Google Patents
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Abstract
本发明属于光伏新能源技术领域,涉及一种在太阳能电池片组件中使用的关键部件,具体地说是一种斜射型反光焊带,包括薄膜基体,所述薄膜基体底部固定有粘贴薄膜层,薄膜基体上部形成有凸起结构,所述凸起结构的横截面呈均匀连续的波形状,且波形结构中的重复单元均为结构相同的直角三角形,所述直角三角形的斜边相互平行,所述薄膜基体上表面贴合设置有形状与所述凸起结构形状相吻合的金属层,所述金属层的斜面为反光面。该反光焊带装配到光伏组件中,在接受光源后不同的表面形状可以让光源形成不同反射、对射和折射,并形成相互干涉的反复光源,可以将单一的光源放大反射为多道光源,形成有力的光源补偿以获得更高的转换效率。
Description
技术领域
本发明属于光伏新能源技术领域,涉及一种在太阳能电池片组件中使用的关键部件,具体地说是一种斜射型反光焊带。
背景技术
太阳能电池是一种非常有前景的新型电源,它具有永久性、清洁性和灵活性三大优点。太阳能电池寿命长,只要太阳存在,太阳能电池就可以一次投资而长期使用;与火力发电、核能发电相比,太阳能电池不会引起环境污染;太阳能电池可以方便地实现大中小的组合,大到百万千瓦的中型电站,小到只供一户用的太阳能电池组,这是其它电源无法比拟的。
作为光伏组件核心的电池片已是整个光伏行业关注的重点,现有电池片发电受光源限制(阴天、夜晚和透光率)、转换损耗(电力输送过程的损失)和表面积(正面导电线的遮光部分)影响其发电效率只有用20%,实验室的实验数据最高也只能达到25%的转换效率,如何最大化利用光源、降低转换过程电力损耗、减少电池片表面遮光部分提高发电转换效率,将是后期太阳能发电发展的关键。
发明内容
本发明的目的在于克服现有技术中存在的不足,提供一种结构简单、巧妙、合理的斜射型反光焊带,该反光焊带装配到光伏组件中,在接受光源后不同的表面形状可以让光源形成不同反射、对射和折射,并形成相互干涉的反复光源,可以将单一的光源放大反射为多道光源,形成有力的光源补偿以获得更高的转换效率。
按照本发明提供的技术方案:一种斜射型反光焊带,特征在于:包括薄膜基体,所述薄膜基体底部固定有粘贴薄膜层,薄膜基体上部形成有凸起结构,所述凸起结构的横截面呈均匀连续的波形状,且波形结构中的重复单元均为结构相同的直角三角形,所述直角三角形的斜边相互平行,在凸起结构表面贴合设置有金属层,所述金属层的斜面为反光面。
作为本发明的进一步改进,所述薄膜基体厚度为0.01mm~0.5mm,宽度为1mm~50mm。
作为本发明的进一步改进,所述粘贴薄膜层的厚度为0.01mm~0.1mm。
作为本发明的进一步改进,所述金属层的厚度为0.0001mm~0.05mm。
作为本发明的进一步改进,所述凸起结构的高度为0.001mm~0.1mm,凸起结构中每一个直角三角形的底部直角边的长度均为0.001mm~0.1mm;相交于凸起结构顶点处的两个面之间为圆弧过渡连接,且所述圆弧半径为0.001mm~0.01mm。
本发明与现有技术相比,优点在于:本发明以光源补偿和光源最大化利用为方向,着手改变现有太阳能发电光源补偿问题,合理充分最大化利用光源,从而增大太阳能发电电池片光照强度和面积,减少受外部光源限制而带来的转换效率损耗。斜射型反光焊带利用透射、吸收、反光原理,可以将单一的光源放大反射为多道光源,并以独特的方式将光源180°折射后,分散到电池片表面,形成有力的光源补偿并以此获得更高的转换效率。
附图说明
图1为本发明的主视结构示意图。
图2为图1中A处的局部放大图。
图3为本发明的展开结构示意图。
具体实施方式
下面结合具体附图和实施例对本发明作进一步说明。
如图1~3所示,包括薄膜基体1、粘贴薄膜层2、凸起结构3、金属层4、反光面5、直角三角形6等。
如图1~3所示,本发明一种斜射型反光焊带,包括薄膜基体1,所述薄膜基体1底部固定有粘贴薄膜层2,薄膜基体1上部形成有与薄膜基体1一体连接的凸起结构3,所述凸起结构3的横截面呈均匀连续的波形状,且波形结构中的重复单元均为结构相同的直角三角形6,所述直角三角形6的斜边相互平行,在薄膜基体1一体连接的凸起结构3表面设置有一层金属涂层4,所述金属层4的斜面为反光面5。
所述薄膜基体1厚度为0.01mm~0.5mm,宽度为1mm~50mm。
所述粘贴薄膜层2的厚度为0.01mm~0.1mm。
所述金属层4的厚度为0.0001mm~0.05mm。
所述凸起结构3的高度为0.001mm~0.1mm,凸起结构3中每一个直角三角形6的底部直角边的长度均为0.001mm~0.1mm;相交于凸起结构3顶点处的两个面之间为圆弧过渡连接,且所述圆弧半径为0.001mm~0.01mm。
本发明产品中的薄膜基体1可以由聚碳酸酯塑料、聚对苯二甲酸乙二醇酯塑料、树脂类塑料或上述材料搭配制成,金属层4可以由银、锌、铝等金属材料制成或上述材料的合金制成。
本发明产品中凸起结构3的高度根据实际使用要求可以设计为薄膜基体1厚度的5%~50%,薄膜基体1的高度为0.01mm~0.5mm。
现有电池片发电受光源限制(阴天、夜晚和透光率)、转换损耗(电力输送过程的损失)和表面积(正面导电线的遮光部分)影响其发电效率只有20%,实验室的实验数据最高也只能达到25%的转换效率,其局限性极大的限制了现有行业的发展,如何最大化利用光源、降低转换过程电力损耗、减少电池片表面遮光部分提高发电转换效率,将是后期太阳能发电发展的关键。
本发明以光源补偿和光源最大化利用为方向,着手改变现有太阳能发电光源补偿问题,合理充分最大化利用光源,从而增大太阳能发电电池片光照强度和面积,减少受外部光源限制而带来的转换效率损耗。斜射型反光焊带利用透射、吸收、反光原理,可以将单一的光源放大反射为多道光源,并以独特的方式折射为180°分散到电池片表面,形成有力的光源补偿以此获得更高的转换效。
Claims (5)
1.一种斜射型反光焊带,其特征在于:包括薄膜基体(1),所述薄膜基体(1)底部固定有粘贴薄膜层(2),薄膜基体(1)上部形成有凸起结构(3),所述凸起结构(3)的横截面呈均匀连续的波形状,且波形结构中的重复单元均为结构相同的直角三角形(6),所述直角三角形(6)的斜边相互平行,在凸起结构(3)表面贴合设置有金属层(4),所述金属层(4)的斜面为反光面(5)。
2.如权利要求1所述的斜射型反光焊带,其特征在于:所述薄膜基体(1)厚度为0.01mm~0.5mm,宽度为1mm~50mm。
3.如权利要求1所述的斜射型反光焊带,其特征在于:所述粘贴薄膜层(2)的厚度为0.01mm~0.1mm。
4.如权利要求1所述的斜射型反光焊带,其特征在于:所述金属层(4)的厚度为0.0001mm~0.05mm。
5.如权利要求1所述的斜射型反光焊带,其特征在于:所述凸起结构(3)的高度为0.001mm~0.1mm,凸起结构(3)中每一个直角三角形(6)的底部直角边的长度均为0.001mm~0.1mm;相交于凸起结构(3)顶点处的两个面之间为圆弧过渡连接,且所述圆弧半径为0.001mm~0.01mm。
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CN105932087A (zh) * | 2016-05-31 | 2016-09-07 | 浙江京华激光科技股份有限公司 | 一种光转向条 |
CN106024939A (zh) * | 2016-05-31 | 2016-10-12 | 浙江京华激光科技股份有限公司 | 一种具有光转向膜的光伏组件 |
CN106461193A (zh) * | 2015-04-17 | 2017-02-22 | 3M创新有限公司 | 用于太阳能模块的光重定向膜 |
CN107527966A (zh) * | 2017-10-12 | 2017-12-29 | 无锡市斯威克科技有限公司 | 一种光伏用折射型反光膜 |
CN108470779A (zh) * | 2018-04-28 | 2018-08-31 | 无锡市斯威克科技有限公司 | 一种光伏用折射型反光膜 |
AU2019213710B2 (en) * | 2018-01-30 | 2021-08-12 | 3M Innovative Properties Company | Light redirecting device and solar cell module comprising said device |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106461193A (zh) * | 2015-04-17 | 2017-02-22 | 3M创新有限公司 | 用于太阳能模块的光重定向膜 |
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CN108470779A (zh) * | 2018-04-28 | 2018-08-31 | 无锡市斯威克科技有限公司 | 一种光伏用折射型反光膜 |
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