CN103681911A - Photovoltaic module - Google Patents
Photovoltaic module Download PDFInfo
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- CN103681911A CN103681911A CN201310750266.3A CN201310750266A CN103681911A CN 103681911 A CN103681911 A CN 103681911A CN 201310750266 A CN201310750266 A CN 201310750266A CN 103681911 A CN103681911 A CN 103681911A
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- diffusion layer
- photovoltaic module
- cell piece
- embossing face
- reflecting surface
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- 238000003466 welding Methods 0.000 claims abstract description 34
- 239000011521 glass Substances 0.000 claims abstract description 30
- 238000009792 diffusion process Methods 0.000 claims description 124
- 238000004049 embossing Methods 0.000 claims description 67
- 238000000576 coating method Methods 0.000 claims description 39
- 239000011248 coating agent Substances 0.000 claims description 36
- 230000011514 reflex Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 16
- 229920000058 polyacrylate Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 238000002834 transmittance Methods 0.000 claims description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 description 10
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 229920009441 perflouroethylene propylene Polymers 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 229920006334 epoxy coating Polymers 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 239000011527 polyurethane coating Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0236—Special surface textures
- H01L31/02366—Special surface textures of the substrate or of a layer on the substrate, e.g. textured ITO/glass substrate or superstrate, textured polymer layer on glass substrate
-
- 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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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
Abstract
The invention discloses a photovoltaic module, comprising a back board, a battery piece group and transparent glass which are connected in a sequentially stacking manner, wherein the battery piece group comprises a plurality of battery pieces which are distributed in an array manner, the battery piece is provided with a welding strip, the transparent glass comprises an embossed surface and a reflecting surface, the embossed surface right faces the battery pieces and is provided with a scattering layer, the scattering layer is positioned at the orthographic projection area of the welding strips opposite to the embossed surface, the scattering layer is used for reflecting sunlight entering the scattering layer to the reflecting surface, and the reflecting surface reflects the sunlight to the battery pieces. The photovoltaic module is provided with the scattering layer on the embossed surface of the transparent glass, and the scattering layer right faces the welding strips of the battery pieces, so that the sunlight entering the scattering layer is reflected to the battery pieces by the transparent glass, wherein the accumulated area of the welding strips on the photovoltaic module is 3%, and 3% area of the photovoltaic module is increased for absorbing luminous energy due to the arrangement of the scattering layer, and the economic benefit of the photovoltaic module is enhanced.
Description
Technical field
The present invention relates to photovoltaic solar cell field, relate in particular to a kind of photovoltaic module.
Background technology
Photovoltaic module is the core in solar power system, is also most important part in solar power system.Its effect is to convert solar energy into electrical energy, or is sent in storage battery and stores, or promotes loaded work piece.Photovoltaic module is combined and is formed by the solar cell of solar battery sheet (two kinds of specification 125*125mm, 156*156mm of full wafer, 124*124mm etc.) or the different size cut open by laser cutting machine or steel-wire cutting machine, and they are encapsulated on a stainless steel, aluminium or other nonmetal frames, install glass above and the back side backboard, be filled with nitrogen, sealing.Wherein, because the surface of solar battery sheet must be welded with welding so that photovoltaic module coordinates with the electrical of other device, and the surface of welding is comparatively smooth, while making solar irradiation be incident upon on welding, welding can reflect its lip-deep most of sunlight straight up, cannot reflex on cell piece, cause the waste of luminous energy, can not effectively luminous energy be changed into electric energy.
Prior art is generally by welding being made to coarse injustice so that preferably by light energy reflected to solar battery sheet, still, in actual use, which processing is more difficult above, needs higher technical merit.
Summary of the invention
Technical problem to be solved by this invention is, the photovoltaic module that a kind of optical property is higher, processing is easier to and economic benefit is higher is provided.
In order to solve the problems of the technologies described above, embodiments of the invention provide a kind of photovoltaic module, described photovoltaic module comprises backboard, cell piece group and the clear glass that stacks gradually connection, described cell piece group comprises a plurality of cell pieces, a plurality of described cell pieces are arranged in array, and described cell piece is provided with welding; Described clear glass comprises embossing face and the reflecting surface being oppositely arranged, described embossing face is over against described cell piece group, described embossing face is provided with diffusion layer, described diffusion layer is positioned at described welding with respect to the orthographic projection region of described embossing face, described diffusion layer is for reflexing to described reflecting surface by the sunlight that is incident to described diffusion layer, and described reflecting surface reflexes to described sunlight on described cell piece.
Wherein, described diffusion layer is organic coating or inorganic coating, and described diffusion layer is coated on described embossing face.
Wherein, described diffusion layer is film, and the material of described diffusion layer is polyurethane or polyacrylate, and described diffusion layer is pasted on described embossing face.
Wherein, the light transmittance of described diffusion layer is 50%～70%.
The present invention also provides a kind of photovoltaic module, described photovoltaic module comprises backboard, cell piece group and the clear glass that stacks gradually connection, described cell piece group comprises a plurality of cell pieces, a plurality of described cell pieces are arranged in array, and between adjacent two described cell pieces, are provided with spacing and form the first gap; Described clear glass comprises embossing face and the reflecting surface being oppositely arranged, described embossing face is over against described cell piece group, described embossing face is provided with diffusion layer, described diffusion layer is positioned at described the first gap with respect to the orthographic projection region of described embossing face, described diffusion layer is for reflexing to described reflecting surface by the sunlight that is incident to described diffusion layer, and described reflecting surface reflexes to described sunlight on described cell piece.
Wherein, described diffusion layer is organic coating or inorganic coating, and described diffusion layer is coated on described embossing face.
Wherein, described diffusion layer is film, and the material of described diffusion layer is polyurethane or polyacrylate, and described diffusion layer is pasted on described embossing face.
The present invention also provides a kind of photovoltaic module, described photovoltaic module comprises frame, stacks gradually the backboard of connection, cell piece group and clear glass, described backboard, described cell piece group and described clear glass are all packaged in described frame, described cell piece group comprises a plurality of cell pieces, a plurality of described cell pieces are arranged in array, and be provided with spacing and form the second gap between the edge of described cell piece group and the edge of described frame; Described clear glass comprises embossing face and the reflecting surface being oppositely arranged, described embossing face is over against described cell piece group, described embossing face is provided with diffusion layer, described diffusion layer is positioned at described the second gap with respect to the orthographic projection region of described embossing face, described diffusion layer is for reflexing to described reflecting surface by the sunlight that is incident to described diffusion layer, and described reflecting surface reflexes to described sunlight on described cell piece.
Wherein, described diffusion layer is organic coating or inorganic coating, and described diffusion layer is coated on described embossing face.
Wherein, described diffusion layer is film, and the material of described diffusion layer is polyurethane or polyacrylate, and described diffusion layer is pasted on described embossing face.
Photovoltaic module provided by the invention is by arranging diffusion layer on the embossing face at clear glass, and described diffusion layer is over against the welding of described cell panel, make the sunlight that is incident to described diffusion layer in described clear glass, reflex on described cell piece, overcome in prior art because described welding is compared with smooth and directly described sunlight is reflected away with 90 degree, cause the waste of luminous energy, wherein, welding accumulation area on described photovoltaic module reaches 3%, by the setting of described diffusion layer, increased the absorption of the luminous energy of 3% area on described photovoltaic module, improved the economic benefit of described photovoltaic module.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the photovoltaic module that provides of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
Refer to Fig. 1, a kind of photovoltaic module 100 that embodiment of the present invention provides, described photovoltaic module 100 stacks gradually backboard 1, cell piece group 2 and the clear glass 3 of connection.
Described backboard 1 is positioned at the back side of described cell piece group 2, to 21 protections of cell piece and supporting role, requires it to have reliable insulating properties, water preventing ability and resistance to ag(e)ing, and the material of described backboard 1 is glass or resinous flat.In the present embodiment, because resin material has good thermoplasticity, and cost is lower, and the material of described backboard 1 is resinous flat.Certainly, in other embodiments, described backboard 1 can also be glass.
Described cell piece group 2 comprises a plurality of cell pieces 21, and a plurality of described cell pieces 21 are arranged in array, and is provided with spacing between adjacent two described cell pieces 21, and described cell piece 21 is provided with welding 21d.In the present embodiment, described cell piece group 2 is rectangle.The specification of a plurality of described cell pieces 21 is identical.Described cell piece 21 comprises longitudinal edge 21a and horizontal edge 21b, and many described longitudinal edge 21a form the long limit of described cell piece group 2, and many described horizontal edge 21b form the minor face of described cell piece group 2.Between adjacent two described cell pieces 21, be provided with spacing and form the first gap 21c.Wherein, spacing described in the horizontal edge 21b of a described cell piece 21 and adjacent another between horizontal edge 21b of cell piece 21 is the first gap 21c, and the spacing described in the longitudinal edge 21a of a described cell piece 21 and adjacent another between longitudinal edge 21a of cell piece 21 is also the first gap 21c.On the front of described cell piece 21, there is many (can be 2,3,4,5,6 or more) bar main grid line (not shown), convergent belt (not shown) is welded on many main grid lines of described cell piece 21 and forms described welding 21d, wherein, described convergent belt is the copper strips that is enclosed with ashbury metal.By ethylene-vinyl acetate copolymer (thylene-vinyl acetate copolymer is called for short EVA) film (not shown) is placed on described backboard 1, described eva film is placed between described backboard 1 and the reverse side of whole described cell piece group 2, at a certain temperature, described eva film is melted, make that described cell piece group 2 is stacked to be connected on described backboard 1.Certainly, in other embodiments, described EVA film can also use fluorinated ethylene propylene copolymer, fluorinated ethylene propylene copolymer or perfluoroethylene-propylene (fluorinated ethylene propylene is called for short FEP) film to replace.Described welding 21d can also determine according to the welding situation on described photovoltaic module 100, such as described welding 21d can also be formed by thin grid or the convergent belt on described cell piece 21.
Described clear glass 3 comprises embossing face 31 and the reflecting surface 32 being oppositely arranged, and described embossing face 31 is over against described cell piece group 2.In the present embodiment, the hair side that described embossing face 31 is described clear glass 3.By ethylene-vinyl acetate copolymer (thylene-vinyl acetate copolymer is called for short EVA) film is placed on the front of described cell piece group 2, described eva film is placed between the front and whole described embossing face 31 of described cell piece group 2, at a certain temperature, described eva film is melted, make that described embossing face 31 is stacked to be connected in described cell piece group 2.Certainly, in other embodiments, described EVA film can also use fluorinated ethylene propylene copolymer, fluorinated ethylene propylene copolymer or perfluoroethylene-propylene (fluorinated ethylene propylene is called for short FEP) film to replace.
Described embossing face 31 is provided with diffusion layer 31a, described diffusion layer 31a is positioned at described welding 21d with respect to the orthographic projection region of described embossing face 31, described diffusion layer 31a is for reflexing to described reflecting surface 32 by the sunlight 4 that is incident to described diffusion layer 31a, and described reflecting surface 32 reflexes to described sunlight 4 on described cell piece 21.In the present embodiment, in order to guarantee not waste the light-dispersing effect that guarantees described diffusion layer 31a under the prerequisite of material, the size of described diffusion layer 31a equals the size of described welding 21d.And the light transmittance of described diffusion layer 31a is 50%～70%.Concrete, for the ease of processing, described diffusion layer 31a is film, described diffusion layer 31a is pasted on described embossing face 31.Wherein, the material of described diffusion layer 31a is polyurethane or polyacrylate etc.Described diffusion layer 31a is pasted on described embossing face 31, and over against described welding 21d, make when sunlight 4 irradiates on the position of the corresponding described welding 21d of described embossing face 31, described sunlight 4 reflexes to described reflecting surface 32, through described reflecting surface 32, reflex on described cell piece 21 again, effectively luminous energy is absorbed, and then be converted into electric energy by described photovoltaic module 100.Certainly, in other embodiments, described diffusion layer 31a is coating, and described diffusion layer 31a is coated on described embossing face 31.The material of described diffusion layer 31a is organic coating or inorganic coating.Such as described diffusion layer 31a can be following organic coating: acrylic resin paint, polyurethane coating, epoxy coating, phenolic resin coating, silicone resin coating, benzene emulsion coating and all kinds of modified coatings etc.; Described diffusion layer 31a can also be following inorganic coating: aluminium oxide coating, silicate paint, using silica-sol wash etc.By adopting mask plate or directly described diffusion layer 31a being coated on described embossing face 31, and then require to be cured according to the condition of cure of coating, thereby described diffusion layer 31a is machined on described embossing face 31.The size of described diffusion layer 31a can also be slightly larger than or be slightly less than the size of described welding.
In order to make described photovoltaic module 100 can better absorb luminous energy, change into electric energy, described embossing face 31 is provided with diffusion layer 31a, described diffusion layer 31a is positioned at described the first gap 21c with respect to the orthographic projection region of described embossing face, described diffusion layer 31a is for reflexing to described reflecting surface 32 by the sunlight 4 that is incident to described diffusion layer 31a, and described reflecting surface 32 reflexes to described sunlight 4 on described cell piece 21.In the present embodiment, the size of described diffusion layer 31a equals the size of described the first gap 21c, makes better to guarantee the light-dispersing effect of described diffusion layer 31a guaranteeing not waste under the prerequisite of material.And the light transmittance of described diffusion layer 31a is 50%～70%.Concrete, for the ease of processing, described diffusion layer 31a is film, described diffusion layer 31a is pasted on described embossing face 31.Wherein, the material of described diffusion layer 31a is polyurethane or polyacrylate etc.Described diffusion layer 31a is pasted on described embossing face 31, and over against described the first gap 21c, make when sunlight 4 irradiates on the position of described embossing face 31 corresponding described the first gap 21c, described sunlight 4 reflexes to described reflecting surface 32, through described reflecting surface 32, reflex on described cell piece 21 again, effectively luminous energy is absorbed, and then be converted into electric energy by described photovoltaic module 100.Certainly, in other embodiments, described diffusion layer 31a can be following organic coating: acrylic resin paint, polyurethane coating, epoxy coating, phenolic resin coating, silicone resin coating, benzene emulsion coating and all kinds of modified coatings etc.; Described diffusion layer 31a can also be following inorganic coating: aluminium oxide coating, silicate paint, using silica-sol wash etc.By adopting mask plate or directly described diffusion layer 31a being coated on described embossing face 31, and then require to be cured according to the condition of cure of coating, thereby described diffusion layer 31a is machined on described embossing face 31.In other embodiments, the corresponding described diffusion layer 31a of described the first gap 21c can also arrange separately, on described photovoltaic module 100, can select whether to arrange the corresponding described diffusion layer 31a of described welding 21d according to actual service condition.
Described photovoltaic module 100 also comprises frame (not shown), described backboard 1, described cell piece group 2 and described clear glass 3 are all packaged in described frame, be provided with spacing and form the second gap (not shown) between the edge of described cell piece group 2 and the edge of described frame.In the present embodiment, two described long limits and two described minor faces are respectively and between four edges of described frame, be provided with spacing and form the second gap.
In order to make described photovoltaic module 100 can further absorb luminous energy, change into electric energy, described embossing face 31 is provided with diffusion layer 31a, described diffusion layer 31a is over against described the second gap, described diffusion layer 31a is for reflexing to described reflecting surface 32 by the sunlight 4 that is incident to described diffusion layer 31a, and described reflecting surface 32 reflexes to described sunlight 4 on described cell piece 21.In the present embodiment, the size in the size of described diffusion layer 31a and described the second gap matches, and makes better to guarantee the light-dispersing effect of described diffusion layer 31a guaranteeing not waste under the prerequisite of material.And the light transmittance of described diffusion layer 31a is 50%～70%.Concrete, for the ease of processing, described diffusion layer 31a is film, described diffusion layer 31a is pasted on described embossing face 31.Wherein, the material of described diffusion layer 31a is polyurethane or polyacrylate etc.Described diffusion layer 31a is pasted on described embossing face 31, and over against described the second gap, make when sunlight 4 irradiates on the position in described embossing face 31 corresponding described the second gaps, described sunlight 4 reflexes to described reflecting surface 32, through described reflecting surface 32, reflex on described cell piece 21 again, effectively luminous energy is absorbed, and then be converted into electric energy by described photovoltaic module 100.Certainly, in other embodiments, described diffusion layer 31a can be following organic coating: acrylic resin paint, polyurethane coating, epoxy coating, phenolic resin coating, silicone resin coating, benzene emulsion coating and all kinds of modified coatings etc.; Described diffusion layer 31a can also be following inorganic coating: aluminium oxide coating, silicate paint, using silica-sol wash etc.By adopting mask plate or directly described diffusion layer 31a being coated on described embossing face 31, and then require to be cured according to the condition of cure of coating, thereby described diffusion layer 31a is machined on described embossing face 31.In other embodiments, described diffusion layer 31a can also arrange separately, at described photovoltaic module 100, do not arrange under the corresponding described diffusion layer 31a of described the first gap 21c and/or the corresponding described diffusion layer 31a of described welding 21d the corresponding described diffusion layer 31a in described the second gap is set separately, facilities or the compound mode of the described diffusion layer 31a that the described diffusion layer 31a that corresponding described diffusion layer 31a, described the second gap of described the first gap 21c is corresponding and described welding 21d are corresponding are determined according to actual conditions.
When described photovoltaic module 100 starts to prepare: need be first connected on described backboard 1 reverse side of described cell piece group 2 is stacked, and described EVA film is placed between 2 of described backboard 1 and described cell piece groups, by described EVA film at a certain temperature, melt, described cell piece group 2 is adhered on described backboard 1; Then by three described diffusion layer 31a respectively on the corresponding position that is pasted on the corresponding described welding 21d of described embossing face 31, described the first gap 21c and described the second gap; And then be connected in described cell piece group 2 described embossing face 31 is stacked, and described EVA film is placed between described cell piece group 2 and described embossing face 31, by described EVA film at a certain temperature, melt, described clear glass 3 is adhered in described back of the body cell piece group 2; Then described backboard 1, described cell piece group 2 and described clear glass 3 are all packaged in described frame, then pour nitrogen-sealed again.Welding 21d accumulation area on described photovoltaic module 100 reaches 3%, the accumulation area in described the first gap 21c and described the second gap reaches 7%, by the setting of above three described diffusion layer 31a, make described photovoltaic module 100 nearly the luminous energy of 10% area can not be wasted, can change into electric energy, be that 250W calculates according to the power of described photovoltaic module 100, effectively increases and utilize 5% calculating, the newly-increased power 12.5W of described photovoltaic module 100, has higher economic benefit.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a photovoltaic module, described photovoltaic module comprises backboard, cell piece group and the clear glass that stacks gradually connection, it is characterized in that, and described cell piece group comprises a plurality of cell pieces, and a plurality of described cell pieces are arranged in array, and described cell piece is provided with welding; Described clear glass comprises embossing face and the reflecting surface being oppositely arranged, described embossing face is over against described cell piece group, described embossing face is provided with diffusion layer, described diffusion layer is positioned at described welding with respect to the orthographic projection region of described embossing face, described diffusion layer is for reflexing to described reflecting surface by the sunlight that is incident to described diffusion layer, and described reflecting surface reflexes to described sunlight on described cell piece.
2. photovoltaic module as claimed in claim 1, is characterized in that, described diffusion layer is organic coating or inorganic coating, and described diffusion layer is coated on described embossing face.
3. photovoltaic module as claimed in claim 1, is characterized in that, described diffusion layer is film, and the material of described diffusion layer is polyurethane or polyacrylate, and described diffusion layer is pasted on described embossing face.
4. photovoltaic module as claimed in claim 1, is characterized in that, the light transmittance of described diffusion layer is 50%～70%.
5. a photovoltaic module, described photovoltaic module comprises backboard, cell piece group and the clear glass that stacks gradually connection, it is characterized in that, described cell piece group comprises a plurality of cell pieces, a plurality of described cell pieces are arranged in array, and between adjacent two described cell pieces, are provided with spacing and form the first gap; Described clear glass comprises embossing face and the reflecting surface being oppositely arranged, described embossing face is over against described cell piece group, described embossing face is provided with diffusion layer, described diffusion layer is positioned at described the first gap with respect to the orthographic projection region of described embossing face, described diffusion layer is for reflexing to described reflecting surface by the sunlight that is incident to described diffusion layer, and described reflecting surface reflexes to described sunlight on described cell piece.
6. photovoltaic module as claimed in claim 5, is characterized in that, described diffusion layer is organic coating or inorganic coating, and described diffusion layer is coated on described embossing face.
7. photovoltaic module as claimed in claim 5, is characterized in that, described diffusion layer is film, and the material of described diffusion layer is polyurethane or polyacrylate, and described diffusion layer is pasted on described embossing face.
8. a photovoltaic module, it is characterized in that, described photovoltaic module comprises frame, stacks gradually the backboard of connection, cell piece group and clear glass, described backboard, described cell piece group and described clear glass are all packaged in described frame, described cell piece group comprises a plurality of cell pieces, a plurality of described cell pieces are arranged in array, and be provided with spacing and form the second gap between the edge of described cell piece group and the edge of described frame; Described clear glass comprises embossing face and the reflecting surface being oppositely arranged, described embossing face is over against described cell piece group, described embossing face is provided with diffusion layer, described diffusion layer is positioned at described the second gap with respect to the orthographic projection region of described embossing face, described diffusion layer is for reflexing to described reflecting surface by the sunlight that is incident to described diffusion layer, and described reflecting surface reflexes to described sunlight on described cell piece.
9. photovoltaic module as claimed in claim 8, is characterized in that, described diffusion layer is organic coating or inorganic coating, and described diffusion layer is coated on described embossing face.
10. photovoltaic module as claimed in claim 8, is characterized in that, described diffusion layer is film, and the material of described diffusion layer is polyurethane or polyacrylate, and described diffusion layer is pasted on described embossing face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750266.3A CN103681911B (en) | 2013-12-31 | 2013-12-31 | Photovoltaic module |
Applications Claiming Priority (1)
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| CN105007036A (en) * | 2015-07-07 | 2015-10-28 | 浙江正泰太阳能科技有限公司 | Solar photovoltaic curtain wall |
| CN105679872A (en) * | 2016-04-14 | 2016-06-15 | 董友强 | Solar cell module with plurality of reflecting layers |
| CN105789335A (en) * | 2014-12-24 | 2016-07-20 | 湖北联合天诚防伪技术股份有限公司 | Anti-reflection thin film for solar batteries and solar battery model thereof |
| CN106449840A (en) * | 2016-12-22 | 2017-02-22 | 苏州高德辰光电科技有限公司 | Photovoltaic module reflecting film and photovoltaic module |
| CN106784096A (en) * | 2017-01-21 | 2017-05-31 | 欧贝黎新能源科技股份有限公司 | A kind of diode-built-in photovoltaic module |
| CN106950626A (en) * | 2017-05-08 | 2017-07-14 | 苏州高德辰光电科技有限公司 | A kind of optical reflection film and preparation method thereof and photovoltaic cell component |
| CN107534068A (en) * | 2015-01-06 | 2018-01-02 | 各星有限公司 | Veining band for photovoltaic module production |
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| CN106784096B (en) * | 2017-01-21 | 2018-03-30 | 欧贝黎新能源科技股份有限公司 | A kind of diode-built-in photovoltaic module |
| CN106950626A (en) * | 2017-05-08 | 2017-07-14 | 苏州高德辰光电科技有限公司 | A kind of optical reflection film and preparation method thereof and photovoltaic cell component |
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