CN106449830B - A kind of reflective back plane for photovoltaic module - Google Patents
A kind of reflective back plane for photovoltaic module Download PDFInfo
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- CN106449830B CN106449830B CN201611201909.9A CN201611201909A CN106449830B CN 106449830 B CN106449830 B CN 106449830B CN 201611201909 A CN201611201909 A CN 201611201909A CN 106449830 B CN106449830 B CN 106449830B
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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
Abstract
The present invention provides a kind of reflective back plane for photovoltaic module, including substrate layer, fluorine layer, the fluorine layer is set to the substrate layer lower surface, the substrate layer upper surface is arranged at intervals with micro-structure reflecting layer, micro-structure reflecting layer position is correspondingly arranged in photovoltaic module the gap area between cell piece, the micro-structure reflecting layer includes micro- pyramid layer, reflecting layer, the reflecting layer is coated in the surface of micro- pyramid layer, micro- pyramid layer is set to by a plurality of micro- pyramid close-packed arrays, micro- pyramid bottom surface in the base material layer surface.The present invention is compared to the prior art, gap area in photovoltaic module between cell piece is provided with micro-structure reflecting layer, micro- pyramid layer is by a plurality of micro- pyramid close-packed arrays, the area of reflecting surface can be increased, change angle of incident light, make the light reflected reach cell piece surface to be recycled, improves the efficiency of light energy utilization, increase the output power of photovoltaic module.
Description
Technical field
The present invention relates to a kind of reflective back planes, especially a kind of reflective back plane for photovoltaic module.
Background technology
Backboard is located at the outermost layer at the photovoltaic cell back side, is photovoltaic cell component important component, not only acts as encapsulation
Effect, while also act as ensure photovoltaic cell do not acted on by what environment was influenced, it is ensured that the service life of photovoltaic cell.
The through photovoltaic cell surface of light major part for being irradiated to photovoltaic cell component panel is absorbed and used, but also has portion
Light splitter is irradiated to the gap area between photovoltaic cell, is not used effectively.Part photovoltaic component back plate is equipped with one
Layer plane aluminium foil reflective structure, but it is normal reflection, the high light intensity light in direct projection to backboard face is reflected onto photovoltaic group
Outside part, the waste of luminous energy is caused.
In the patent document of publication No. CN204315600U, back plate surface is provided with strip reflection knot arranged in parallel
Structure, but its purpose is also that incident ray is reflected into photovoltaic module exterior space, and there is no absorbed incident ray by cell piece
It utilizes.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, it the object of the present invention is to provide a kind of simple in structure, at low cost, carries
The reflective back plane for photovoltaic module of high-light-energy utilization rate.
In order to achieve the above objectives, the technical solution adopted by the present invention to solve the technical problems is：
A kind of reflective back plane for photovoltaic module, including substrate layer, fluorine layer, the fluorine layer are set to the substrate layer following table
Face, the substrate layer upper surface are arranged at intervals with micro-structure reflecting layer, and micro-structure reflecting layer position is correspondingly arranged at photovoltaic group
Gap area in part between cell piece, the micro-structure reflecting layer include micro- pyramid layer and reflectance coating, the reflectance coating coating
On the surface of micro- pyramid layer, micro- pyramid layer is set to the base by a plurality of micro- pyramid close-packed arrays, micro- pyramid bottom surface
In material layer surface.
Compared to the prior art, the gap area in photovoltaic module between cell piece is provided with micro-structure reflection to the present invention
Layer, micro- pyramid layer can increase the area of reflecting surface by a plurality of micro- pyramid close-packed arrays, change angle of incident light, make anti-
The light of injection reaches cell piece surface and is recycled, and improves the efficiency of light energy utilization, increases the output power of photovoltaic module.
Further, micro- pyramid is preferably pyramidal rectangular pyramids.
Using the above preferred scheme, pyramid structure makes incident ray to four direction non-uniform reflection to cell piece table
Face, light utilization are high, while structure also most stability.
Further, the pyramidal rectangular pyramids bottom edge is arranged with photovoltaic module cell piece main gate line direction angle at 45 °.
Using the above preferred scheme, reflection light can be made to be dissipated to four direction, without being re-reflected into photovoltaic module
Gap area between middle cell piece.
Further, the pyramidal rectangular pyramids are more gradient structures, and the inclination angle of crest line becomes smaller successively from lower to upper.
Using the above preferred scheme, the height of pyramidal rectangular pyramids is reduced, space is saved, also increases reflecting surface
Product improves photovoltaic module efficiency.
Further, the pyramidal rectangular pyramids corner angle is 50 ° -75 °.
Using the above preferred scheme, ensure structural stability while improving reflective surface area.
Further, the pyramidal rectangular pyramids bottom surface length of side is 20-50 μm.
Using the above preferred scheme, under the guarantee of Mold Making ability, micro-structure is refined, it can be preferably by reflected light
Line recycles.
Further, micro-structure reflecting layer upper surface is equipped with thick protective layer, and it is anti-that micro-structure is not arranged for the substrate layer
The upper surface for penetrating layer is equipped with thin protective layer.
Using the above preferred scheme, effectively stablize micro-structure reflecting layer shape design, reduce abrasion, ensure reflection effect
Fruit；Surface forms the shape to match with cell piece group surface, facilitates the encapsulation of further battery piece group.
Further, micro- pyramid layer is ultra-violet curing glue-line made of UV solidifications.
Using the above preferred scheme, precision die corresponding with micro- pyramid layer is first made, then UV is used to cure skill
Art generates micro- pyramid layer, and forming precision is high, and is integrated chemical conversion type, ensures the stability of micro-structure.
Further, the reflectance coating is plating aluminium alloy film.
Using the above preferred scheme, the reflecting layer obtained is of low cost, and reflecting effect is good, and corrosion resistance is strong.
Further, the thick protective layer, thin protective layer are EVA hot-melt adhesive.
Using the above preferred scheme, at low cost, while protecting reflection micro-structure, it is also convenient for the envelope subsequently with cell piece
Dress.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the reality on the pyramidal rectangular pyramids bottom edge and photovoltaic module cell piece main gate line direction angle at 45 ° of the present invention
Apply the structural schematic diagram of mode.
Fig. 3 is structural schematic diagram of the pyramidal rectangular pyramids at more gradient structures.
Fig. 4 is the structural schematic diagram for the embodiment that thin, thick protective layer is arranged in surface of the present invention.
Fig. 5 is a kind of structural schematic diagram of photovoltaic module cell piece distribution.
Fig. 6 be corresponding diagram 5 a kind of reflective back plane in micro-structure reflecting layer be distributed structural schematic diagram.
Fig. 7 is a kind of structural schematic diagram of the photovoltaic module containing the present invention.
The title of number and the corresponding component represented by letter in figure：
1- substrate layers；2- micro-structures reflecting layer；3- fluorine layers；4- cell pieces；5- sheet glass；6- thickness protective layers；The thin protections of 7-
Layer；11- incident rays；12- reflection lights；13- is totally reflected light；The micro- pyramid layers of 21-；22- reflectance coatings；41- cell piece main grids
Line direction.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
In order to reach the purpose of the present invention, as shown in figs. 1-7, it is in one embodiment of the present invention：One kind being used for light
The reflective back plane of component, including substrate layer 1, fluorine layer 3 are lied prostrate, fluorine layer 3 is set to 1 lower surface of substrate layer, and 1 upper table face interval of substrate layer is set
It is equipped with micro-structure reflecting layer 2,2 position of micro-structure reflecting layer is correspondingly arranged at the gap area in photovoltaic module between cell piece 4, micro-
Structure reflecting layer 2 includes micro- pyramid layer 21 and reflectance coating 22, and reflectance coating 22 is coated in the surface of micro- pyramid layer 21, micro- pyramid layer 21
By a plurality of micro- pyramid close-packed arrays, micro- pyramid bottom surface is set on 1 surface of substrate layer.
As shown in Figure 5,6, Fig. 5 is a kind of structural schematic diagram of photovoltaic module cell piece arrangement, and Fig. 6 is the one of corresponding diagram 5
The structural schematic diagram that micro-structure reflecting layer 2 is distributed in kind reflective back plane corresponds to the gap area between cell piece 4 in photovoltaic module
For micro-structure reflecting layer 2, corresponding cell piece 4 is transparent region, and micro-structure reflecting layer 2 is not arranged.
It is using the advantageous effect of above-mentioned technical proposal：Gap area in photovoltaic module between cell piece 4 is provided with
Micro-structure reflecting layer 2, micro- pyramid layer 21 can increase the area of reflecting surface by a plurality of micro- pyramid close-packed arrays, change incident
Light angle makes the light reflected reach 4 surface of cell piece and is recycled, improves the efficiency of light energy utilization, increase photovoltaic module
Output power.
In other embodiments of the present invention, in order to achieve the purpose that more preferably to improve light utilization, micro- rib
Cone is preferably pyramidal rectangular pyramids.It is using the advantageous effect of above-mentioned technical proposal：Pyramid structure makes incident ray to four
For direction non-uniform reflection to cell piece surface, light utilization is high, while structure also most stability.
As shown in Fig. 2, in other embodiments of the present invention, in order to achieve the purpose that improve light reflection path,
The pyramidal rectangular pyramids bottom edge is arranged with 41 direction of photovoltaic module cell piece main gate line angle at 45 °.Using above-mentioned technical side
The advantageous effect of case is：The length direction of gap area in photovoltaic module between cell piece 4 and cell piece main gate line direction 41
Identical or vertical, the angle setting at 45 ° therewith of pyramidal rectangular pyramids bottom edge can be such that reflection light is dissipated to four direction,
On micro-structure reflecting layer 2 without the gap area setting being re-reflected into photovoltaic module between cell piece.
As shown in figure 3, in other embodiments of the present invention, in order to reach section space-efficient purpose, the gold word
Tower rectangular pyramid is more gradient structures, and the inclination angle of crest line becomes smaller successively from lower to upper, the inclined angle alpha ＞ β ＞ γ of crest line in figure.It adopts
It is with the advantageous effect of above-mentioned technical proposal：The height of pyramidal rectangular pyramids is reduced, space is saved, also increases reflecting surface
Product improves photovoltaic module efficiency.
In other embodiments of the present invention, in order to achieve the purpose that improve microstructural stability, the pyramid
Rectangular pyramid corner angle is 50 ° -75 °.It is using the advantageous effect of above-mentioned technical proposal：Ensure while improving reflective surface area
Structural stability.
In other embodiments of the present invention, in order to achieve the purpose that refine micro-structure, the pyramidal rectangular pyramids
The bottom surface length of side is 20-50 μm.It is using the advantageous effect of above-mentioned technical proposal：Under the guarantee of Mold Making ability, refinement is micro-
Structure can preferably recycle reflection light.
As shown in figure 4, in other embodiments of the present invention, in order to achieve the purpose that prevent abrasion, micro-structure anti-
It penetrates 2 upper surface of layer and is equipped with thick protective layer 6, the upper surface that micro-structure reflecting layer is not arranged for substrate layer 1 is equipped with thin protective layer 7.Using
The advantageous effect of above-mentioned technical proposal is：Effectively stablize microstructure aspects construction, reduce abrasion, ensures reflecting effect；The reflection back of the body
Plate surface forms the shape to match with cell piece group surface, facilitates the encapsulation of further battery piece group.
In other embodiments of the present invention, stablize micro- pyramid layer 21, micro- rib to achieve the purpose that make
It is ultra-violet curing glue-line made of UV solidifications to bore layer 21.It is using the advantageous effect of above-mentioned technical proposal：First make and micro- pyramid
Then 21 corresponding precision die of layer use UV curing technologies to generate micro- pyramid layer 21, forming precision is high, and are integration
Molding, ensures the stability of micro-structure.
It is described anti-in order to achieve the purpose that reflectance coating 22 is at low cost, effect is good in other embodiments of the present invention
It is plating aluminium alloy to penetrate film 22.It is using the advantageous effect of above-mentioned technical proposal：Obtained reflectance coating is of low cost, reflecting effect
Good, corrosion resistance is strong.
In other embodiments of the present invention, in order to achieve the purpose that facilitate encapsulation, the thickness protective layer 6, Bao Bao
Sheath 7 is EVA hot-melt adhesive.It is using the advantageous effect of above-mentioned technical proposal：It is at low cost, protect the same of micro-structure reflecting layer 2
When, it is also convenient for the encapsulation subsequently with cell piece 4.
Illustrate that the principle of present invention reflection light in photovoltaic module, reflective back plane of the present invention are mounted on reference to Fig. 7
4 lower surface of cell piece, gap area of the micro-structure reflecting layer 2 between cell piece, incident ray 11 (sunlight) is through sheet glass 5
It is incident on 2 surface of micro-structure reflecting layer, path is changed into reflection light 12 by reflection, then be totally reflected and change through 5 surface of sheet glass
Reflection light 13 is helped in path, is eventually arrived at cell piece 4, is absorbed and used.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow ordinary skill people
Member can understand present disclosure and be implemented, and it is not intended to limit the scope of the present invention, all according to the present invention
Equivalent change or modification made by Spirit Essence should all cover within the scope of the present invention.
Claims (6)
1. a kind of reflective back plane for photovoltaic module, including substrate layer, fluorine layer, the fluorine layer is set to the substrate layer following table
Face, it is characterized in that：The substrate layer upper surface is arranged at intervals with micro-structure reflecting layer, and micro-structure reflecting layer position corresponds to and sets
Gap area in photovoltaic module between cell piece, the micro-structure reflecting layer include micro- pyramid layer and reflectance coating, described anti-
The surface that film is coated in micro- pyramid layer is penetrated, micro- pyramid layer is set by a plurality of micro- pyramid close-packed arrays, micro- pyramid bottom surface
In in the base material layer surface；Micro- pyramid is pyramidal rectangular pyramids, and the pyramidal rectangular pyramids are more gradient structures, crest line
Inclination angle become smaller successively from lower to upper；The pyramidal rectangular pyramids bottom edge and photovoltaic module cell piece main gate line direction are at 45 °
Angle is arranged；Micro-structure reflecting layer upper surface is equipped with thick protective layer, and the upper of micro-structure reflecting layer is not arranged for the substrate layer
Surface is equipped with thin protective layer, and the apical side height of the thickness protective layer is higher than the apical side height of the thin protective layer.
2. a kind of reflective back plane for photovoltaic module according to claim 1, it is characterized in that：The pyramidal rectangular pyramids
Corner angle is 50 ° -75 °.
3. a kind of reflective back plane for photovoltaic module according to claim 2, it is characterized in that：The pyramidal rectangular pyramids
The bottom surface length of side is 20-50 μm.
4. a kind of reflective back plane for photovoltaic module according to claim 1, it is characterized in that：Micro- pyramid layer is UV
Ultra-violet curing glue-line made of solidification.
5. a kind of reflective back plane for photovoltaic module according to claim 1, it is characterized in that：The reflectance coating is plating
Aluminium alloy film.
6. a kind of reflective back plane for photovoltaic module according to claim 1, it is characterized in that：The thickness protective layer, thin
Protective layer is EVA hot-melt adhesive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611201909.9A CN106449830B (en) | 2016-12-22 | 2016-12-22 | A kind of reflective back plane for photovoltaic module |
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| CN201611201909.9A CN106449830B (en) | 2016-12-22 | 2016-12-22 | A kind of reflective back plane for photovoltaic module |
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| CN106449830B true CN106449830B (en) | 2018-07-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107026210B (en) * | 2017-05-04 | 2019-08-06 | 苏州高德辰光电科技有限公司 | A kind of reflectance coating, its manufacturing method and its application |
| 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 |
| CN109103285A (en) * | 2018-08-10 | 2018-12-28 | 珠海格力能源环境技术有限公司 | Photovoltaic module |
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| TWI590480B (en) * | 2012-05-15 | 2017-07-01 | 財團法人工業技術研究院 | Solar optical module, solar optical film and fabrications thereof |
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| CN201796910U (en) * | 2010-08-31 | 2011-04-13 | 阿特斯(中国)投资有限公司 | Solar battery component |
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Address after: 215000 Room 201, 3 building, 51 Jin Si Gang Road, Guo Lane, Wuzhong District, Suzhou, Jiangsu. Patentee after: SUZHOU GOLDEN STAR ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 215000 Jiangsu Industrial Park, Suzhou, the only Ting Ting new road, No. 9, 3rd floor, room 312B, Patentee before: SUZHOU GOLDEN STAR ELECTRONIC TECHNOLOGY Co.,Ltd. |