CN106449830B - A kind of reflective back plane for photovoltaic module - Google Patents
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- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 9
- 239000011737 fluorine Substances 0.000 claims abstract description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 74
- 239000011241 protective layer Substances 0.000 claims description 17
- 238000003848 UV Light-Curing Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000004831 Hot glue Substances 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
- H10F19/85—Protective back sheets
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/40—Optical elements or arrangements
- H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
本发明提供一种用于光伏组件的反射背板，包括基材层、氟层，所述氟层设于所述基材层下表面，所述基材层上表面间隔设置有微结构反射层，所述微结构反射层位置对应设于光伏组件中电池片之间的间隙区域，所述微结构反射层包括微棱锥层、反射层，所述反射层涂覆在所述微棱锥层的表面，所述微棱锥层由复数个微棱锥紧密阵列，微棱锥底面设于所述基材层表面上。本发明相较于现有技术，在光伏组件中电池片之间的间隙区域设置有微结构反射层，微棱锥层由复数个微棱锥紧密阵列，可以增加反射面的面积，改变入射光线角度，使反射出的光线到达电池片表面进行再利用，提高光能利用率，增加光伏组件的输出功率。
The present invention provides a reflective backsheet for photovoltaic modules, comprising a base material layer and a fluorine layer, the fluorine layer is arranged on the lower surface of the base material layer, and microstructure reflective layers are arranged at intervals on the upper surface of the base material layer , the position of the microstructure reflective layer corresponds to the gap area between the cells in the photovoltaic module, the microstructure reflective layer includes a micropyramid layer and a reflective layer, and the reflective layer is coated on the surface of the micropyramid layer , the micro-pyramid layer is composed of a plurality of micro-pyramids closely arrayed, and the bottom surface of the micro-pyramids is arranged on the surface of the substrate layer. Compared with the prior art, the present invention is provided with a micro-structure reflective layer in the gap area between the cells in the photovoltaic module, and the micro-pyramid layer is closely arrayed by a plurality of micro-pyramids, which can increase the area of the reflective surface and change the angle of incident light. Make the reflected light reach the surface of the cell for reuse, improve the utilization rate of light energy, and increase the output power of the photovoltaic module.
Description
技术领域technical field
本发明涉及一种反射背板，特别是一种用于光伏组件的反射背板。The invention relates to a reflective backplane, in particular to a reflective backplane used for photovoltaic modules.
背景技术Background technique
背板位于光伏电池背面的最外层，是光伏电池组件重要组成部分，不仅起到封装的作用，同时还起到保证光伏电池不受到环境影响的作用，确保光伏电池的使用寿命。The backsheet is located on the outermost layer of the back of the photovoltaic cell and is an important part of the photovoltaic cell module. It not only plays the role of packaging, but also plays a role in ensuring that the photovoltaic cell is not affected by the environment and ensures the service life of the photovoltaic cell.
照射到光伏电池组件面板的光线大部分直达光伏电池表面被吸收利用，但也有部分光线照射到光伏电池片之间的间隙区域，没有被有效利用。部分光伏组件背板上设有一层平面铝箔反光结构，但是其为正反射，直射到背板面上的高光强光线均被反射至光伏组件外部，造成了光能的浪费。Most of the light irradiated on the photovoltaic cell module panel is absorbed and utilized directly to the surface of the photovoltaic cell, but some of the light is also irradiated to the gap area between the photovoltaic cell sheets and is not effectively utilized. There is a layer of flat aluminum foil reflective structure on the back plate of some photovoltaic modules, but it is a regular reflection, and the high-intensity light that directly hits the back plate surface is reflected to the outside of the photovoltaic module, resulting in a waste of light energy.
在公布号CN204315600U的专利文献中，背板表面设置了平行排列的条状反射结构，但其目的也是将入射光线反射到光伏组件外部空间，并没有将入射光线被电池片吸收利用。In the patent document with the publication number CN204315600U, the surface of the backplane is provided with strip-shaped reflective structures arranged in parallel, but the purpose is to reflect the incident light to the outer space of the photovoltaic module, and the incident light is not absorbed by the cells.
发明内容Contents of the invention
为了克服上述现有技术的不足，本发明的目的是提供了一种结构简单、成本低，提高光能利用率的用于光伏组件的反射背板。In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a reflective backplane for photovoltaic modules with simple structure, low cost and improved light energy utilization.
为达到上述目的，本发明解决其技术问题所采用的技术方案是：In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problems is:
一种用于光伏组件的反射背板，包括基材层、氟层，所述氟层设于所述基材层下表面，所述基材层上表面间隔设置有微结构反射层，所述微结构反射层位置对应设于光伏组件中电池片之间的间隙区域，所述微结构反射层包括微棱锥层和反射膜，所述反射膜涂覆在所述微棱锥层的表面，所述微棱锥层由复数个微棱锥紧密阵列，微棱锥底面设于所述基材层表面上。A reflective backplane for a photovoltaic module, comprising a base material layer and a fluorine layer, the fluorine layer is arranged on the lower surface of the base material layer, and the upper surface of the base material layer is provided with a microstructure reflective layer at intervals, the The position of the microstructure reflective layer corresponds to the gap area between the cells in the photovoltaic module. The microstructure reflective layer includes a micropyramid layer and a reflective film, and the reflective film is coated on the surface of the micropyramid layer. The micro-pyramid layer is closely arrayed by a plurality of micro-pyramids, and the bottom surface of the micro-pyramids is arranged on the surface of the substrate layer.
本发明相较于现有技术，在光伏组件中电池片之间的间隙区域设置有微结构反射层，微棱锥层由复数个微棱锥紧密阵列，可以增加反射面的面积，改变入射光线角度，使反射出的光线到达电池片表面进行再利用，提高光能利用率，增加光伏组件的输出功率。Compared with the prior art, the present invention is provided with a micro-structure reflective layer in the gap area between the cells in the photovoltaic module, and the micro-pyramid layer is closely arrayed by a plurality of micro-pyramids, which can increase the area of the reflective surface and change the angle of incident light. Make the reflected light reach the surface of the cell for reuse, improve the utilization rate of light energy, and increase the output power of the photovoltaic module.
进一步地，所述微棱锥优选为金字塔四棱锥。Further, the micro-pyramids are preferably pyramidal pyramids.
采用上述优选的方案，金字塔结构使入射光线向四个方向均匀反射至电池片表面，光线利用率高，同时结构也最具稳定性。With the above preferred solution, the pyramid structure allows the incident light to be evenly reflected to the surface of the cell in four directions, with high light utilization efficiency and the most stable structure.
进一步地，所述金字塔四棱锥底边与光伏组件电池片主栅线方向成45°角度设置。Further, the base of the pyramidal pyramid is set at an angle of 45° to the direction of the busbar of the photovoltaic module cell.
采用上述优选的方案，可以使反射光线向四个方向发散，而不再反射到光伏组件中电池片之间的间隙区域。By adopting the above-mentioned preferred solution, the reflected light can be diverged in four directions without being reflected to the gap area between the cells in the photovoltaic module.
进一步地，所述金字塔四棱锥为多斜度结构，棱线的倾斜角由下往上依次变小。Further, the pyramidal pyramid is a multi-slope structure, and the inclination angles of the ridgelines gradually become smaller from bottom to top.
采用上述优选的方案，降低了金字塔四棱锥的高度，节省空间，也增加了反射面积，提高光伏组件效率。By adopting the above preferred solution, the height of the pyramidal pyramid is reduced, space is saved, the reflection area is increased, and the efficiency of the photovoltaic module is improved.
进一步地，所述金字塔四棱锥顶角角度为50°-75°。Further, the apex angle of the pyramidal pyramid is 50°-75°.
采用上述优选的方案，在提高反射面积的同时保证结构稳定性。By adopting the above preferred solution, structural stability can be ensured while increasing the reflective area.
进一步地，所述金字塔四棱锥底面边长为20-50μm。Further, the side length of the bottom surface of the pyramid is 20-50 μm.
采用上述优选的方案，在模具制作能力的保证下，细化微结构，能更好地将反射光线再利用。By adopting the above preferred solution, under the guarantee of the mold making ability, the microstructure is refined, and the reflected light can be better reused.
进一步地，所述微结构反射层上表面设有厚保护层，所述基材层未设置微结构反射层的上表面设有薄保护层。Further, a thick protective layer is provided on the upper surface of the microstructure reflective layer, and a thin protective layer is provided on the upper surface of the substrate layer without the microstructure reflective layer.
采用上述优选的方案，有效稳定微结构反射层形状构造，减少磨损，保证反射效果；表面形成与电池片组表面相匹配的形状，方便后续电池片组的封装。Adopting the above-mentioned optimal solution can effectively stabilize the shape and structure of the microstructure reflective layer, reduce wear and ensure the reflection effect; the surface forms a shape that matches the surface of the cell group, which facilitates the subsequent packaging of the cell group.
进一步地，所述微棱锥层为UV固化而成的紫外固化胶层。Further, the micro-pyramid layer is a UV-cured adhesive layer formed by UV curing.
采用上述优选的方案，先制作与微棱锥层相对应的精密模具，然后使用UV固化技术生成微棱锥层，成型精密度高，且为一体化成型，保证微结构的稳定性。Using the above preferred scheme, first make a precision mold corresponding to the micro-pyramid layer, and then use UV curing technology to generate the micro-pyramid layer. The forming precision is high, and it is integrally formed to ensure the stability of the micro-structure.
进一步地，所述反射膜为电镀铝合金膜。Further, the reflective film is an electroplated aluminum alloy film.
采用上述优选的方案，得到的反射层成本低廉，反射效果好，耐腐蚀性强。By adopting the above preferred solution, the obtained reflective layer has low cost, good reflective effect and strong corrosion resistance.
进一步地，所述厚保护层、薄保护层均为EVA热熔胶。Further, both the thick protective layer and the thin protective layer are EVA hot melt adhesives.
采用上述优选的方案，成本低，保护反射微结构的同时，也方便后续与电池片的封装。By adopting the above preferred solution, the cost is low, and while the reflective microstructure is protected, it is also convenient for subsequent encapsulation with the battery sheet.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1是本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
图2是本发明的金字塔四棱锥底边与光伏组件电池片主栅线方向成45°角度的实施方式的结构示意图。Fig. 2 is a schematic structural view of an embodiment in which the base of the pyramidal pyramid of the present invention forms an angle of 45° with the direction of the busbar of the photovoltaic module cell.
图3是金字塔四棱锥成多斜度结构的结构示意图。Fig. 3 is a structural schematic diagram of a multi-slope structure of pyramidal pyramids.
图4是本发明表面设置薄、厚保护层的实施方式的结构示意图。Fig. 4 is a schematic structural view of an embodiment of the present invention with thin and thick protective layers on the surface.
图5是一种光伏组件电池片分布的结构示意图。Fig. 5 is a structural schematic diagram of the distribution of cells in a photovoltaic module.
图6是对应图5的一种反射背板中微结构反射层分布的结构示意图。FIG. 6 is a structural schematic diagram corresponding to the distribution of microstructure reflective layers in a reflective backplane shown in FIG. 5 .
图7是一种含本发明的光伏组件的结构示意图。Fig. 7 is a schematic structural view of a photovoltaic module containing the present invention.
图中数字和字母所表示的相应部件的名称：Names of corresponding parts indicated by numbers and letters in the figure:
1-基材层；2-微结构反射层；3-氟层；4-电池片；5-玻璃片；6-厚保护层；7-薄保护层；11-入射光线；12-反射光线；13-全反射光线；21-微棱锥层；22-反射膜；41-电池片主栅线方向。1-substrate layer; 2-microstructure reflective layer; 3-fluorine layer; 4-battery sheet; 5-glass sheet; 6-thick protective layer; 7-thin protective layer; 11-incident light; 12-reflected light; 13-total reflection light; 21-micro-pyramid layer; 22-reflection film; 41-battery busbar direction.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
为了达到本发明的目的，如图1-7所示，在本发明的一种实施方式为：一种用于光伏组件的反射背板，包括基材层1、氟层3，氟层3设于基材层1下表面，基材层1上表面间隔设置有微结构反射层2，微结构反射层2位置对应设于光伏组件中电池片4之间的间隙区域，微结构反射层2包括微棱锥层21和反射膜22，反射膜22涂覆在微棱锥层21的表面，微棱锥层21由复数个微棱锥紧密阵列，微棱锥底面设于基材层1表面上。In order to achieve the purpose of the present invention, as shown in Figures 1-7, one embodiment of the present invention is: a reflective backplane for photovoltaic modules, including a base material layer 1, a fluorine layer 3, and the fluorine layer 3 is set On the lower surface of the substrate layer 1, the upper surface of the substrate layer 1 is provided with a microstructure reflective layer 2 at intervals. The position of the microstructure reflective layer 2 corresponds to the gap area between the cells 4 in the photovoltaic module. The microstructure reflective layer 2 includes The micro-pyramid layer 21 and the reflective film 22, the reflective film 22 is coated on the surface of the micro-pyramid layer 21, the micro-pyramid layer 21 is closely arrayed by a plurality of micro-pyramids, and the bottom surface of the micro-pyramids is arranged on the surface of the substrate layer 1.
如图5、6所示，图5是一种光伏组件电池片排布的结构示意图，图6是对应图5的一种反射背板中微结构反射层2分布的结构示意图，对应光伏组件中电池片4之间的间隙区域为微结构反射层2，对应电池片4为透明区域，未设置微结构反射层2。As shown in Figures 5 and 6, Figure 5 is a schematic structural diagram of the arrangement of cells in a photovoltaic module, and Figure 6 is a structural schematic diagram of the distribution of the microstructure reflective layer 2 in a reflective backplane corresponding to Figure 5, which corresponds to the distribution of microstructure reflection layers in a photovoltaic module. The gap area between the battery sheets 4 is the microstructure reflective layer 2 , and the corresponding battery sheet 4 is a transparent area without the microstructure reflective layer 2 .
采用上述技术方案的有益效果是：在光伏组件中电池片4之间的间隙区域设置有微结构反射层2，微棱锥层21由复数个微棱锥紧密阵列，可以增加反射面的面积，改变入射光线角度，使反射出的光线到达电池片4表面进行再利用，提高光能利用率，增加光伏组件的输出功率。The beneficial effect of adopting the above-mentioned technical solution is: the microstructure reflective layer 2 is provided in the gap area between the battery sheets 4 in the photovoltaic module, and the micro-pyramid layer 21 is closely arrayed by a plurality of micro-pyramids, which can increase the area of the reflective surface and change the incidence The light angle makes the reflected light reach the surface of the battery sheet 4 for reuse, so as to improve the utilization rate of light energy and increase the output power of the photovoltaic module.
在本发明的另一些实施方式中，为了达到更好提高光线利用率的目的，所述微棱锥优选为金字塔四棱锥。采用上述技术方案的有益效果是：金字塔结构使入射光线向四个方向均匀反射至电池片表面，光线利用率高，同时结构也最具稳定性。In other embodiments of the present invention, in order to better improve light utilization efficiency, the micro-pyramids are preferably pyramidal pyramids. The beneficial effect of adopting the above technical solution is that the pyramid structure makes the incident light evenly reflect to the surface of the cell in four directions, the light utilization rate is high, and the structure is also the most stable.
如图2所示，在本发明的另一些实施方式中，为了达到改善光线反射路径的目的，所述金字塔四棱锥底边与光伏组件电池片主栅线41方向成45°角度设置。采用上述技术方案的有益效果是：光伏组件中电池片4之间的间隙区域的长度方向与电池片主栅线方向41相同或者垂直，金字塔四棱锥底边与之成45°角度设置，可以使反射光线向四个方向发散，而不再反射到光伏组件中电池片之间的间隙区域设置的微结构反射层2上。As shown in FIG. 2 , in some other embodiments of the present invention, in order to achieve the purpose of improving the light reflection path, the bottom of the pyramid is set at an angle of 45° to the direction of the main grid line 41 of the photovoltaic module cell. The beneficial effect of adopting the above technical solution is: the length direction of the gap region between the cells 4 in the photovoltaic module is the same as or perpendicular to the direction 41 of the cell bus bar, and the bottom edge of the pyramid is set at an angle of 45° to it, which can make The reflected light diverges in four directions and is no longer reflected on the microstructure reflective layer 2 provided in the gap area between the cells in the photovoltaic module.
如图3所示，在本发明的另一些实施方式中，为了达到节省空间的目的，所述金字塔四棱锥为多斜度结构，棱线的倾斜角由下往上依次变小，图中棱线的倾斜角α＞β＞γ。采用上述技术方案的有益效果是：降低了金字塔四棱锥的高度，节省空间，也增加了反射面积，提高光伏组件效率。As shown in Figure 3, in other embodiments of the present invention, in order to achieve the purpose of saving space, the pyramidal pyramid is a multi-slope structure, and the inclination angle of the ridge line becomes smaller successively from bottom to top. The inclination angle of the line is α>β>γ. The beneficial effect of adopting the above technical solution is that the height of the pyramidal pyramid is reduced, the space is saved, the reflection area is increased, and the efficiency of the photovoltaic module is improved.
在本发明的另一些实施方式中，为了达到提高微结构稳定性的目的，所述金字塔四棱锥顶角角度为50°-75°。采用上述技术方案的有益效果是：在提高反射面积的同时保证结构稳定性。In some other embodiments of the present invention, in order to achieve the purpose of improving the stability of the microstructure, the apex angle of the pyramid quadrangular pyramid is 50°-75°. The beneficial effect of adopting the above technical solution is that the structural stability is ensured while increasing the reflective area.
在本发明的另一些实施方式中，为了达到细化微结构的目的，所述金字塔四棱锥底面边长为20-50μm。采用上述技术方案的有益效果是：在模具制作能力的保证下，细化微结构，能更好地将反射光线再利用。In some other embodiments of the present invention, in order to achieve the purpose of refining the microstructure, the side length of the base of the pyramidal pyramid is 20-50 μm. The beneficial effect of adopting the above technical solution is: under the guarantee of mold making ability, the microstructure is refined, and the reflected light can be better reused.
如图4所示，在本发明的另一些实施方式中，为了达到防止磨损的目的，微结构反射层2上表面设有厚保护层6，基材层1未设置微结构反射层的上表面设有薄保护层7。采用上述技术方案的有益效果是：有效稳定微结构形状构造，减少磨损，保证反射效果；反射背板表面形成与电池片组表面相匹配的形状，方便后续电池片组的封装。As shown in Figure 4, in other embodiments of the present invention, in order to achieve the purpose of preventing abrasion, the upper surface of the microstructure reflective layer 2 is provided with a thick protective layer 6, and the upper surface of the substrate layer 1 is not provided with the microstructure reflective layer A thin protective layer 7 is provided. The beneficial effects of adopting the above technical solution are: effectively stabilizing the shape and structure of the microstructure, reducing wear, and ensuring the reflection effect; the surface of the reflective backplane forms a shape that matches the surface of the cell group, which facilitates the subsequent packaging of the cell group.
在本发明的另一些实施方式中，为了达到制作稳定微棱锥层21的目的，所述微棱锥层21为UV固化而成的紫外固化胶层。采用上述技术方案的有益效果是：先制作与微棱锥层21相对应的精密模具，然后使用UV固化技术生成微棱锥层21，成型精密度高，且为一体化成型，保证微结构的稳定性。In some other embodiments of the present invention, in order to achieve the purpose of making the stable micro-pyramid layer 21, the micro-pyramid layer 21 is a UV-cured adhesive layer formed by UV curing. The beneficial effect of adopting the above-mentioned technical solution is: first make a precision mold corresponding to the micro-pyramid layer 21, and then use UV curing technology to generate the micro-pyramid layer 21, which has high molding precision and is integrally formed to ensure the stability of the micro-structure .
在本发明的另一些实施方式中，为了达到反射膜22成本低、效果好的目的，所述反射膜22为电镀铝合金。采用上述技术方案的有益效果是：得到的反射膜成本低廉，反射效果好，耐腐蚀性强。In some other embodiments of the present invention, in order to achieve the purpose of low cost and good effect of the reflective film 22, the reflective film 22 is an electroplated aluminum alloy. The beneficial effect of adopting the above technical solution is that the obtained reflective film has low cost, good reflective effect and strong corrosion resistance.
在本发明的另一些实施方式中，为了达到方便封装的目的，所述厚保护层6、薄保护层7均为EVA热熔胶。采用上述技术方案的有益效果是：成本低，保护微结构反射层2的同时，也方便后续与电池片4的封装。In other embodiments of the present invention, in order to facilitate packaging, the thick protective layer 6 and the thin protective layer 7 are both EVA hot-melt adhesives. The beneficial effects of adopting the above technical solution are: low cost, while protecting the microstructure reflective layer 2 , it is also convenient for subsequent encapsulation with the battery sheet 4 .
下面结合图7阐述本发明在光伏组件中反射光线的原理，本发明反射背板安装在电池片4下表面，微结构反射层2位于电池片之间的间隙区域，入射光线11(阳光)经玻璃片5入射到微结构反射层2表面，被反射改变路径成反射光线12，再经玻璃片5表面全反射改变路径成全反射光线13，最终到达电池片4，被吸收利用。The principle of reflecting light in the photovoltaic module of the present invention is described below in conjunction with FIG. 7. The reflective backplane of the present invention is installed on the lower surface of the battery sheet 4, and the microstructure reflective layer 2 is located in the gap area between the battery sheets. The incident light 11 (sunlight) passes through The glass sheet 5 is incident on the surface of the microstructure reflective layer 2, is reflected and changes its path into a reflected light 12, and then changes its path through total reflection on the surface of the glass sheet 5 into a total reflected light 13, finally reaches the battery sheet 4, and is absorbed and utilized.
上述实施例只为说明本发明的技术构思及特点，其目的在于让本领域普通技术人员能够了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围内。The above-described embodiments are only to illustrate the technical concept and characteristics of the present invention, and its purpose is to allow those of ordinary skill in the art to understand the content of the present invention and implement it, and cannot limit the protection scope of the present invention with this. All equivalent changes or modifications shall fall within the protection scope of the present invention.
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| CN107703569A (en) * | 2017-10-17 | 2018-02-16 | 张家港康得新光电材料有限公司 | Reflective membrane and its application and grid line structure and solar panel |
| CN108259002A (en) * | 2018-03-22 | 2018-07-06 | 上海玛企电子科技有限公司 | A kind of photovoltaic module reflectance coating and photovoltaic module |
| CN109103285B (en) * | 2018-08-10 | 2024-12-31 | 珠海格力能源环境技术有限公司 | Photovoltaic panels |
| CN110208888A (en) * | 2019-07-09 | 2019-09-06 | 无锡市诺岩信科技有限公司 | Photovoltaic module multiple reflection facet reflective film |
| CN113983363A (en) * | 2021-10-29 | 2022-01-28 | 吴敏君 | A kind of LED illuminant and LED lamp |
| CN119855253B (en) * | 2025-03-17 | 2025-10-31 | 浙江晶科能源有限公司 | Photovoltaic backboard, preparation method thereof and photovoltaic module |
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