CN106601846A - 聚光太阳能电池板 - Google Patents
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Abstract
本发明涉及一种聚光太阳能电池板，具有位于上层的钢化玻璃、中层的电池片和底层的背板，钢化玻璃与电池片之间、电池片与背板之间均设有乙烯与醋酸乙烯共聚物胶膜，钢化玻璃、电池片、背板以及乙烯与醋酸乙烯共聚物胶膜通过真空加热压制粘结成一体。本发明的电池片真空设置在钢化玻璃和背板之间，有效的保护了电池片与外界的接触，延长了使用寿命；聚光太阳能电池板的PN结为球形，能最大程度的接收太阳光，并且在太阳入射角变化的情况下，能消除太阳光斑的象差，提高了光电转化率；聚光太阳能电池板的PN结为球形，不需切片，材料损失大幅度减少，材料的使用量是平板太阳能电池的五分之一，降低了生产成本。
Description
技术领域
本发明涉及太阳能电池的技术领域，特别是涉及一种聚光太阳能电池板。
背景技术
目前，传统的燃料能源正在一天天减少，对环境造成的危害日益突出，同时全球还有20亿人得不到正常的能源供应。这个时候，全世界都把目光投向了可再生能源，希望可再生能源能够改变人类的能源结构，维持长远的可持续发展。这之中太阳能以其独有的优势而成为人们重视的焦点。丰富的太阳辐射能是重要的能源，是取之不尽、用之不竭的、无污染、廉价、人类能够自由利用的能源。太阳能每秒钟到达地面的能量高达80万千瓦，假如把地球表面0.1％的太阳能转为电能，转变率5％，每年发电量可达5.6×1012千瓦小时，相当于目前世界上能耗的40倍。
虽然太阳能是最为丰富的可再生能源资源，然而太阳能发电的高成本一直是大规模开发利用的障碍，降低太阳能发电成本是前沿课题，能否经济高效利用太阳能的关键在于提高太阳能的光电转换效率。世界各国都将提高太阳能发电效率，降低太阳能发电成本，作为科学研究以及产业化的前沿工作。
而太阳能电池板是太阳能发电系统中的核心部分，也是太阳能发电系统中价值最高的部分。太阳能电池板是由多块太阳能电池组件串联和并联起来组成发电方阵，其作用是将太阳的辐射能转换为电能，太阳能电池板的质量和成本将直接决定整个系统的质量和成本。现有技术中大都采用平板太阳能电池板，这种太阳能电池板虽然能很好的适应太阳入射角光的变化，但其电转化率较低，且硅材料使用较多，生产成本较高。
发明内容
本发明的一个目的在于提供一种能适应太阳入射角变化的、光电转化率较高的、生产成本较低的聚光太阳能电池板。
为实现上述目的，本发明提出的一种聚光太阳能电池板，其特征在于：所述太阳能电池板具有位于上层的钢化玻璃、中层的电池片和底层的背板，钢化玻璃与电池片之间、电池片与背板之间均设有乙烯与醋酸乙烯共聚物胶膜，钢化玻璃、电池片、背板以及乙烯与醋酸乙烯共聚物胶膜通过真空加热压制粘结成一体，所述背板包括自下而上依次设置的耐侯层、第一散热层、基材层和第二散热层，所述第一散热层和第二散热层为石墨烯、聚丙烯酸树脂、固化剂和稀释剂混合均匀涂布形成的涂层，其中所述石墨烯占聚丙烯酸树脂重量的0.015～0.025％。
作为优选，所述电池片由多个聚光太阳能电池组件通过超声波焊接形成，各聚光太阳能电池组件具有聚光镜和设置在聚光镜内的PN结，所述PN结为球形，PN结的内部球体为P区，外部覆盖层为N区，内部球体下部电连接有正电极，正电极下端穿过聚光镜并设置在聚光镜底部，外部覆盖层与聚光镜电连接，聚光镜兼做负电极。
作为优选，所述聚光镜上部开口端的外轮廓为六边形。
作为优选，所述聚光镜外轮廓六边形外接圆直径与PN结最大直径之比为3.2～3.7∶1。
作为优选，所述耐侯层为氟碳树脂，所述耐候层的厚度为20-25微米，所述所述第一散热层和第二散热层的厚度均为20-25微米，所述基材层为PET树脂，所述基材层的厚度为200-280微米。
本发明具有以下特点：(1)本发明的电池片真空设置在钢化玻璃和背板之间，有效的保护了电池片与外界的接触，延长了使用寿命；(2)本发明聚光太阳能电池组件的PN结为球形，能最大程度的接收太阳光，并且在太阳入射角变化的情况下，能消除太阳光斑的象差，PN结表面的反射光被再次反射到表面，减少表面反射产生的光损失，增加电流，同时PN结下半部接也能受光照射，防止因阴影引起的电压下降，大大提高了光电转化率。(3)因聚光太阳能电池组件的PN结为球形，不需切片，材料损失大幅度减少，材料的使用量是平板太阳能电池的五分之一，降低了生产成本；(4)聚光太阳能电池组件的聚光镜上部开口端的外轮廓为六边形，便于阵列组装，且连接牢固；(5)聚光太阳能电池组件的聚光镜兼做负电极，而正电极设置在聚光镜底部，便于在阵列组装时的电连接，设计合理巧妙；(6)本发明的背板散热性能好，提高聚光太阳能电池板的使用寿命。
附图说明
图1为本发明聚光太阳能电池板的结构示意图；
图2为本发明聚光太阳能电池组件的结构示意图；
图3为本发明聚光太阳能电池组件的立体示意图；
图4为本发明背板的结构示意图。
具体实施方式
下面，将结合附图来对本发明的示例实施例进行详细描述。在附图中，相同或相似的参考标号自始至终表示相同或相似的元件。
如图1至图4所示，一种聚光太阳能电池板具有位于上层的钢化玻璃1、中层的电池片2和底层的背板3，钢化玻璃1与电池片2之间、电池片2与背板3之间均设有乙烯与醋酸乙烯共聚物胶膜4，钢化玻璃1、电池片2、背板3以及乙烯与醋酸乙烯共聚物胶膜4通过真空加热压制粘结成一体，所述背板3包括自下而上依次设置的耐侯层31、第一散热层32、基材层33和第二散热层34，所述第一散热层32和第二散热层34为石墨烯、聚丙烯酸树脂、固化剂和稀释剂混合均匀涂布形成的涂层，其中所述石墨烯占聚丙烯酸树脂重量的0.015～0.025％，其中所述耐侯层31为氟碳树脂，所述耐候层31的厚度为20-25微米，所述所述第一散热层32和第二散热层34的厚度均为20-25微米，所述基材层33为PET树脂，所述基材层33的厚度为200-280微米。
电池片2由多个聚光太阳能电池组件5通过超声波焊接形成，各聚光太阳能电池组件5具有聚光镜51和设置在聚光镜51内的PN结52，聚光镜51上部开口端的外轮廓为六边形，PN结52为球形，PN结52的内部球体52-1为P区，外部覆盖层52-2为N区，内部球体52-1下部电连接有正电极53，正电极53下端穿过聚光镜51并设置在聚光镜51底部，外部覆盖层52-2与聚光镜51电连接，聚光镜51兼做负电极，聚光镜51外轮廓六边形外接圆直径与PN结52最大直径之比为3.2～3.7∶1，本实施例中聚光镜51外轮廓六边形外接圆直径为3.2～3.7毫米，球形PN结52的直径为1毫米。
本发明的电池片2真空设置在钢化玻璃1和背板3之间，有效的保护了电池片与外界的接触，延长了使用寿命，电池片2是由聚光太阳能电池组件5组成，聚光太阳能电池组件5的聚光镜51上部开口端的外轮廓为六边形，在组成发电方阵时可将各聚光太阳能电池组件的聚光镜51外轮廓边缘进行焊接，从而形成蜂窝状的阵列电池片2，连接牢固紧密，同时兼具柔性、可弯曲性的特征；而聚光镜51兼做负电极，正电极设置在聚光镜51的底部，也使得各聚光太阳能电池组件的电连接十分的方便。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。
Claims (5)
1.一种聚光太阳能电池板，其特征在于：所述太阳能电池板具有位于上层的钢化玻璃、中层的电池片和底层的背板，钢化玻璃与电池片之间、电池片与背板之间均设有乙烯与醋酸乙烯共聚物胶膜，钢化玻璃、电池片、背板以及乙烯与醋酸乙烯共聚物胶膜通过真空加热压制粘结成一体，所述背板包括自下而上依次设置的耐侯层、第一散热层、基材层和第二散热层，所述第一散热层和第二散热层为石墨烯、聚丙烯酸树脂、固化剂和稀释剂混合均匀涂布形成的涂层，其中所述石墨烯占聚丙烯酸树脂重量的0.015～0.025％。
2.根据权利要求1所述的聚光太阳能电池板，其特征在于：所述电池片由多个聚光太阳能电池组件通过超声波焊接形成，各聚光太阳能电池组件具有聚光镜和设置在聚光镜内的PN结，所述PN结为球形，PN结的内部球体为P区，外部覆盖层为N区，内部球体下部电连接有正电极，正电极下端穿过聚光镜并设置在聚光镜底部，外部覆盖层与聚光镜电连接，聚光镜兼做负电极。
3.根据权利要求2所述的聚光太阳能电池板，其特征在于：所述聚光镜上部开口端的外轮廓为六边形。
4.根据权利要求3所述的聚光太阳能电池板，其特征在于：所述聚光镜外轮廓六边形外接圆直径与PN结最大直径之比为3.2～3.7∶1。
5.根据权利要求1所述的聚光太阳能电池板，其特征在于：所述耐侯层为氟碳树脂，所述耐候层的厚度为20-25微米，所述所述第一散热层和第二散热层的厚度均为20-25微米，所述基材层为PET树脂，所述基材层的厚度为200-280微米。
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| CN107103764A (zh) * | 2017-06-20 | 2017-08-29 | 国网山东省电力公司烟台供电公司 | 跨越公路线路限高报警装置 |
| CN112635601A (zh) * | 2020-12-22 | 2021-04-09 | 苏州腾晖光伏技术有限公司 | 一种光伏电池用背板组件 |
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| CN103441171A (zh) * | 2013-09-10 | 2013-12-11 | 乐凯胶片股份有限公司 | 一种散热性能优异的太阳能电池背板 |
| CN104362206A (zh) * | 2014-11-14 | 2015-02-18 | 无锡中洁能源技术有限公司 | 一种透明太阳能电池板背膜及其制备方法 |
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| CN103441171A (zh) * | 2013-09-10 | 2013-12-11 | 乐凯胶片股份有限公司 | 一种散热性能优异的太阳能电池背板 |
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| CN107103764A (zh) * | 2017-06-20 | 2017-08-29 | 国网山东省电力公司烟台供电公司 | 跨越公路线路限高报警装置 |
| CN112635601A (zh) * | 2020-12-22 | 2021-04-09 | 苏州腾晖光伏技术有限公司 | 一种光伏电池用背板组件 |
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