CN107395112A - 新洁净光伏板的防止热斑效应方法 - Google Patents

新洁净光伏板的防止热斑效应方法 Download PDF

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CN107395112A
CN107395112A CN201710754387.3A CN201710754387A CN107395112A CN 107395112 A CN107395112 A CN 107395112A CN 201710754387 A CN201710754387 A CN 201710754387A CN 107395112 A CN107395112 A CN 107395112A
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马人欢
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • HELECTRICITY
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    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
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Abstract

本发明涉及一种新洁净光伏板的防止热斑效应方法,本新洁净光伏板包括有支架、吸光条、反射板和框架;所述吸光条平行的阵列在所述框架内并组成吸光栅格,框架中的每排所述吸光条之间的间隔相同,各所述吸光条的受光面朝下;在所述框架的下方位置正对的安装有所述反射板,所述反射板和所述框架之间由支架连接固定;该光伏板能够高效吸收太阳能发电,同时受光面不易沾染灰尘,具有更长的使用寿命。

Description

新洁净光伏板的防止热斑效应方法
本申请是申请号为201510665504.X发明名称为新洁净光伏板的分案申请。
技术领域
本发明涉及一种光伏板,特别的,是一种不易粘附灰尘的光伏板。
背景技术
随着环境的恶化和人类环保意识的深入,光伏发电作为主要绿色能源之一,越来越多的得以应用;光伏作为太阳能发电,天气的状况是制约发电的最大因素,其次人力所能控制的除了避免电气设备故障带来的损失外,光伏板的洁净度也显得尤为重要;光伏组件表面污浊对齐发电效率的影响相当显著,其一,表面的污浊影响光线的透射率,进而影响到组件表面所接受的辐射量;其二,污物粘附在电池板表面会形成阴影,在光伏组件的局部产生热斑效应,进而对光伏板造成损伤,影响发电效率的同时也会缩短光伏板的寿命;传统结构的光伏板由于采光面朝上,灰尘很容易落在表面,从而引发热斑效应,而采光面朝下则无法高效吸收光能。
发明内容
针对上述问题,本发明提供一种新洁净光伏板,该光伏板能够高效吸收太阳能发电,同时受光面不易沾染灰尘,具有更长的使用寿命。
为解决上述问题,本发明所采用的技术方案是:本新洁净光伏板包括有支架、吸光条、反射板和框架;所述吸光条平行的阵列在所述框架内并组成吸光栅格,框架中的每排所述吸光条之间的间隔相同,各所述吸光条的受光面朝下;在所述框架的下方位置正对的安装有所述反射板,所述反射板和所述框架之间由支架连接固定。
本发明的有益效果是:将本新洁净光伏板安装在房顶、墙壁或荒漠地区;这些位置接收日照的时间较长、光照也较强;太阳光透过吸光条之间的空隙到达反射板,反射光照射在吸光条的受光面用以发电;相较于传统的光伏板,本发明中的吸光条的宽度远小于框架与反射板之间的距离,根据光的衍射特性可知,被吸光条遮挡形成的阴影在经过反射板的反射后,阴影变得较淡,对吸光条的影响较小;此外,在长期使用中反射板上将积累小颗粒污物,这些污物造成的阴影也因光的衍射特性而逐渐变淡,当阴影到达吸光条时阴影变得模糊,本影区域变得很小甚至消失,此时已无法形成热斑效应。
同时本发明中吸光条的受光面向下,有效防止了灰尘的积累、沉积,同时受雨水的冲刷也有效降低,因此整体的使用寿命明显增长;综上,本发明结构简单、精巧,有效防止了传统光伏板的热斑效应,同时具有较长的使用寿命,具有较高的推广价值。
作为优选,所述反射板由单透玻璃板做成,所述单透玻璃板的反光面朝上;这种使用单透玻璃板的光伏板可以装置于房顶作以家用,室内的居民能够透过单透玻璃板看到房间外的风景,视野不会受到阻碍,同时外界的阳光大部分被反光面反射用以发电,因此这种家用光伏板在高效发电的同时能够保证房间的明亮、通透。
作为优选,相邻两个所述吸光条之间的间隔与吸光条的宽度相等;以便于使透光率和光能吸收率达到最平衡、科学。
作为进一步优选,框架与反射板之间的距离为吸光条宽度的13倍以上;随着框架与反射板之间的距离增大,吸光条在反射板上形成的阴影将逐渐变淡,同时反射板上的污物形成的阴影的本影部分也将变小;该数量关系能够保证阴影对吸光条的影响较小,从而无法使吸光条产生热斑效应。
作为优选,在所述框架的上下边缘还安装有遮雨挡板;以便于将雨水导流,减小雨水沿吸光条下表面流动的频率。
作为优选,在所述吸光条之间安装有旋光板,所述旋光板的厚度使光线旋转45度角;在所述旋光板的上表面贴附有偏振片;太阳光经偏振片过滤后形成偏振光,偏振光透过旋光板后旋转45度角,旋转后的偏振光经反射板反射后照射在吸光条上,用以吸光条的吸收、发电,而部分未照射在吸光条上的偏振光再次透过旋光板旋转45度角,此时偏振光与偏振片的透光方向呈90度角,偏振光无法透射出去,该结构有效防止了反射板的光污染,不会影响高空飞行器的视野。
附图说明
图1为本新洁净光伏板用于屋顶的结构示意图。
图2为图1所示实施例中光路偏转的示意图。
具体实施方式
实施例
在图1、图2所示的实施例中,本新洁净光伏板包括有支架1、吸光条2、反射板3和框架4;所述吸光条2平行的阵列在所述框架4内并组成吸光栅格,框架4中的每排所述吸光条2之间的间隔相同,各所述吸光条2的受光面朝下,且相邻两个所述吸光条2之间的间隔与吸光条2的宽度相等;在两个相邻所述吸光条2之间安装有旋光板5,所述旋光板5的厚度使光线旋转45度角;在所述旋光板5的上表面贴附有偏振片6;在所述框架4的下方位置正对的安装有所述反射板3,所述反射板3由单透玻璃板做成,所述单透玻璃板的反光面朝上;所述反射板3和所述框架4之间由支架1连接固定,框架4与反射板3之间的距离为吸光条2宽度的13倍以上;在所述框架4的上下边缘还安装有遮雨挡板7。
将本新洁净光伏板安装在房顶、墙壁或荒漠地区;这些位置接收日照的时间较长、光照也较强;太阳光透过吸光条2之间的空隙到达反射板3,少量光线透过单透玻璃板射入反射板3的下方,如光线透过屋顶的反射板3照亮室内,从而使室内的光线充足,同时居民能够透过该单透玻璃板观察天空及吸光条2,因此视野上更开阔;而大部分光线经反射板3后照射在吸光条2的受光面用以发电;相较于传统光伏板的集成化,本发明中的吸光条2的宽度远小于框架4与反射板3之间的距离,根据光的衍射特性可知,被吸光条2遮挡形成的阴影在经过反射板3的反射后,阴影变得较淡,对吸光条2的影响较小;同时,在本实施例中,相邻吸光条2之间的间距与吸光条2的宽度相等,反射光和吸光条2能够达到平衡,将有充足的光线照射吸光条2;同时吸光条2产生的阴影在长距离的反射路径后阴影变淡,因此吸光条2各处的光强差别较小,各所述吸光条2的发电功率一致,从而使其使用寿命得到延长。
此外,在长期使用中反射板3上将积累小颗粒污物,这些污物造成的阴影也因光的衍射特性而逐渐变淡,当阴影到达吸光条2时阴影变得模糊,本影区域变得很小甚至消失,此时已无法形成热斑效应。
同时本发明中吸光条2的受光面向下,有效防止了灰尘的积累、沉积,同时受雨水的冲刷也有效降低,因此整体的使用寿命明显增长;本实施例中的遮雨挡板7能够进一步的保护吸光条2,减少吸光条2受雨水的侵蚀。
在本实施例中,旋光板5和偏光片起到降低光污染的效果;如图2所示,太阳光经偏振片6过滤后形成偏振光,偏振光透过旋光板5后旋转45度角,旋转后的偏振光经反射板3反射后照射在吸光条2上,用以吸光条2的吸收、发电,而部分未照射在吸光条2上的偏振光再次透过旋光板5旋转45度角,此时偏振光与偏振片6的透光方向呈90度角,偏振光无法透射出去;即照射在本光伏板上的光线不会在反射回去,不影响高空的视线,该结构有效防止了反射板3的光污染,不会影响高空飞行器的视野,同时将光能封闭在吸光条2和反射板3之间,有效提高了发电效率。
综上,本发明结构简单、精巧,有效防止了传统光伏板的热斑效应,同时具有较长的使用寿命,具有较高的推广价值。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (5)

1.一种新洁净光伏板的防止热斑效应方法,本新洁净光伏板包括有支架(1)、吸光条(2)、反射板(3)和框架(4);其特征在于:所述吸光条(2)平行的阵列在所述框架(4)内并组成吸光栅格,框架(4)中的每排所述吸光条(2)之间的间隔相同,各所述吸光条(2)的受光面朝下;在所述框架(4)的下方位置正对的安装有所述反射板(3),所述反射板(3)和所述框架(4)之间由支架(1)连接固定;
在所述吸光条(2)之间安装有旋光板(5),所述旋光板(5)的厚度使光线旋转45度角;在所述旋光板(5)的上表面贴附有偏振片(6);该方法的具体工作过程如下:太阳光透过吸光条(2)之间的空隙到达反射板(3),少量光线透过单透玻璃板射入反射板(3)的下方,如光线透过屋顶的反射板(3)照亮室内,从而使室内的光线充足,同时居民能够透过该单透玻璃板观察天空及吸光条(2),因此视野上更开阔;而大部分光线经反射板(3)后照射在吸光条(2)的受光面用以发电;相较于传统光伏板的集成化,本发明中的吸光条(2)的宽度远小于框架(4)与反射板(3)之间的距离,根据光的衍射特性可知,被吸光条(2)遮挡形成的阴影在经过反射板(3)的反射后,阴影变得较淡,对吸光条(2)的影响较小;同时,在本实施例中,相邻吸光条(2)之间的间距与吸光条(2)的宽度相等,反射光和吸光条(2)能够达到平衡,将有充足的光线照射吸光条(2);同时吸光条(2)产生的阴影在长距离的反射路径后阴影变淡,因此吸光条(2)各处的光强差别较小,各所述吸光条(2)的发电功率一致,从而使其使用寿命得到延长;在长期使用中反射板(3)上将积累小颗粒污物,这些污物造成的阴影也因光的衍射特性而逐渐变淡,当阴影到达吸光条(2)时阴影变得模糊,本影区域变得很小甚至消失,此时已无法形成热斑效应。
2.根据权利要求1所述的新洁净光伏板的防止热斑效应方法,其特征在于:所述反射板(3)由单透玻璃板做成,所述单透玻璃板的反光面朝上。
3.根据权利要求1所述的新洁净光伏板的防止热斑效应方法,其特征在于:相邻两个所述吸光条(2)之间的间隔与吸光条(2)的宽度相等。
4.根据权利要求1或3所述的新洁净光伏板的防止热斑效应方法,其特征在于:框架(4)与反射板(3)之间的距离为吸光条(2)宽度的13倍以上。
5.根据权利要求1或2所述的新洁净光伏板的防止热斑效应方法,其特征在于:在所述框架(4)的上下边缘还安装有遮雨挡板(7)。
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