CN113416501A - Composite adhesive film, photovoltaic module and irradiation light reflection method for composite adhesive film - Google Patents
Composite adhesive film, photovoltaic module and irradiation light reflection method for composite adhesive film Download PDFInfo
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- CN113416501A CN113416501A CN202110666774.8A CN202110666774A CN113416501A CN 113416501 A CN113416501 A CN 113416501A CN 202110666774 A CN202110666774 A CN 202110666774A CN 113416501 A CN113416501 A CN 113416501A
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- light
- adhesive film
- surface layer
- composite adhesive
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 72
- 239000002131 composite material Substances 0.000 title claims abstract description 47
- 238000001028 reflection method Methods 0.000 title claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 61
- 239000010410 layer Substances 0.000 claims abstract description 48
- 239000002105 nanoparticle Substances 0.000 claims abstract description 37
- 230000001678 irradiating effect Effects 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 13
- 239000000049 pigment Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005083 Zinc sulfide Substances 0.000 claims description 2
- 229910000410 antimony oxide Inorganic materials 0.000 claims description 2
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 239000005308 flint glass Substances 0.000 claims description 2
- 229910001678 gehlenite Inorganic materials 0.000 claims description 2
- 229910001691 hercynite Inorganic materials 0.000 claims description 2
- 239000001095 magnesium carbonate Substances 0.000 claims description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 2
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 235000012245 magnesium oxide Nutrition 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052845 zircon Inorganic materials 0.000 claims description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 abstract description 28
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 12
- 230000008901 benefit Effects 0.000 description 6
- 229910021419 crystalline silicon Inorganic materials 0.000 description 5
- 239000000975 dye Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 description 2
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- FIYMNUNPPYABMU-UHFFFAOYSA-N 2-benzyl-5-chloro-1h-indole Chemical compound C=1C2=CC(Cl)=CC=C2NC=1CC1=CC=CC=C1 FIYMNUNPPYABMU-UHFFFAOYSA-N 0.000 description 1
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 description 1
- BRQMAAFGEXNUOL-UHFFFAOYSA-N 2-ethylhexyl (2-methylpropan-2-yl)oxy carbonate Chemical compound CCCCC(CC)COC(=O)OOC(C)(C)C BRQMAAFGEXNUOL-UHFFFAOYSA-N 0.000 description 1
- GPNYZBKIGXGYNU-UHFFFAOYSA-N 2-tert-butyl-6-[(3-tert-butyl-5-ethyl-2-hydroxyphenyl)methyl]-4-ethylphenol Chemical compound CC(C)(C)C1=CC(CC)=CC(CC=2C(=C(C=C(CC)C=2)C(C)(C)C)O)=C1O GPNYZBKIGXGYNU-UHFFFAOYSA-N 0.000 description 1
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 1
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 n-octadecyl Chemical group 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
-
- 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
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- 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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/322—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
-
- 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 invention belongs to the technical field of photovoltaic adhesive films, and particularly relates to a composite adhesive film, a photovoltaic module and an irradiation light reflection method for the composite adhesive film, wherein the composite adhesive film comprises the following components in parts by weight: a surface layer which is a light-transmitting colored layer containing nano particles; and a reflective layer laminated on the lower layer of the surface layer; irradiating the surface layer with the irradiation light, wherein the short wavelength light is directly reflected by the nano particles, and the long wavelength light is transmitted from the surface layer, reflected by the reflecting layer and emitted through the surface layer to form secondary reflection. The invention adopts the modes of surface layer reflection and transmission and bottom layer secondary reflection to convert the light energy originally absorbed by the adhesive film into reflected light, thereby not only improving the reflectivity of different wave bands of the colored adhesive film, such as ultraviolet light and short-wavelength visible light, but also improving the integral reflectivity and improving the power assembly.
Description
Technical Field
The invention belongs to the field of photovoltaic adhesive films, and particularly relates to a composite adhesive film, a photovoltaic module and an irradiation light reflection method for the composite adhesive film.
Background
The black photovoltaic module is used for decorating roofs, walls and curtain walls at present, and then is matched with a black adhesive film which is similar to a crystalline silicon battery piece in color, so that the laminated module shows an integrated black appearance effect. In the actual use process, the reflectivity and the hue of the black adhesive film are relatively contradictory. In order to realize the comprehensive effect of high reflectivity and small color difference with the battery piece. The currently adopted method is to add an infrared reflective pigment or dye, but the infrared light reflectivity is only about 42%, for example, in the black infrared reflective photovoltaic EVA film disclosed in patent document, application No. 201410120277.8, the infrared reflectivity mentioned in example 4 is 42.6%, although the reflectivity is better than that of the conventional black film, a large amount of energy is absorbed by the black film during the actual use, which causes the temperature of the photovoltaic module to rise. If the temperature of the photovoltaic module is increased, the photoelectric conversion efficiency of the crystalline silicon cell is reduced. On the other hand, if the high infrared reflection type pigment is adopted to increase the reflectivity, the color difference between the adhesive film and the battery piece is increased, so that the color difference conflict is generated between the battery piece and the gap of the module.
Therefore, it is a technical problem to be solved in the art that the color film has a higher reflectivity to ultraviolet and short wavelength visible light, and long wavelength visible infrared light, especially to the original black dye which selectively transmits light, thereby reducing the temperature rise, improving the power of the device, and maintaining the integrated black appearance of the black device.
Disclosure of Invention
The invention provides a composite adhesive film, a photovoltaic module and an irradiation light reflection method for the composite adhesive film.
In order to solve the above technical problems, the present invention provides a composite adhesive film, comprising:
a surface layer which is a light-transmitting colored layer containing nano particles; and
a reflective layer laminated on the lower layer of the surface layer;
irradiating the surface layer with the irradiation light, wherein the short wavelength light is directly reflected by the nano particles, and the long wavelength light is transmitted from the surface layer, reflected by the reflecting layer and emitted through the surface layer to form secondary reflection.
In another aspect, the invention also provides a photovoltaic module, which adopts the composite adhesive film; and the twice reflected light of the composite adhesive film is emitted to the back surface of the battery piece.
In a third aspect, the invention also provides an irradiation light reflection method for the composite adhesive film, wherein
The composite adhesive film comprises:
a surface layer which is a light-transmitting colored layer containing nano particles; and
the reflecting layer is positioned at the lower layer of the surface layer; and
the reflection method comprises the following steps:
irradiating the surface layer with irradiation light, wherein the short wavelength light is directly reflected by the nanoparticles to form first reflected light; and the long-wavelength light is transmitted from the surface layer, reflected by the reflecting layer and emitted through the surface layer to form second reflected light.
The composite adhesive film, the photovoltaic module and the irradiation light reflection method for the composite adhesive film have the advantages that the surface layer reflection and transmission and the bottom layer secondary reflection are adopted, light energy originally absorbed by the adhesive film is converted into reflection light, the reflectivity of different wave bands of the colored adhesive film is improved, such as ultraviolet light and/or short-wavelength visible light, the integral reflectivity is improved, the power module is improved, meanwhile, the particle size of the nano particles is small, the interference on the transmission of long-wavelength light and the hue of the adhesive film is not influenced, the reflection utilization rate of different spectrum band wavelengths is expanded, and the technical problem that the reflectivity and the hue of a black adhesive film are in relative contradiction is solved due to the black color of the original adhesive film.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a composite adhesive film according to the present invention;
fig. 2 is a schematic view of an irradiation light reflection method for the composite adhesive film of the present invention.
In the figure:
the solar cell comprises a surface layer 1, a reflecting layer 2, a cell piece 3, a transparent layer 4, glass 5 and nano particles 6;
the light L1, the incident light L2, the first reflected light L3, and the second reflected light L4 are irradiated.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the actual use process, the reflectivity and the hue of the black adhesive film are relatively contradictory.
In order to increase the reflectivity, a method adopted at present is to add an infrared reflection pigment or dye, but the reflectivity is only about 42%, for example, in the patent document, application No. 201410120277.8, a black infrared reflection type photovoltaic EVA film is disclosed, in the example 4 part, the infrared reflectivity is 42.6%, although the black infrared reflection type photovoltaic EVA film has better reflectivity than the traditional black EVA film, during the actual use, a large amount of energy is absorbed by the black EVA film, which causes the temperature of the photovoltaic module to rise, and the photoelectric conversion efficiency of the crystalline silicon cell is reduced due to the temperature rise of the photovoltaic module. The high infrared reflection pigment is simply adopted, so that the hue difference between the glue film and the component is easily caused, and the hue difference of the appearance of the component is caused.
Based on the above technical problem which has not been solved for a long time in the photovoltaic field, the present embodiment provides a composite adhesive film, as shown in fig. 1, which includes: a surface layer 1 which is a light-transmitting colored layer containing nanoparticles and a reflective layer 2, and is laminated on the lower layer of the surface layer; after the irradiation light L1 enters from the surface layer 1, the short wavelength light in the irradiation light is directly reflected according to the particle size of the nano particles, and the long wavelength light is transmitted from the surface layer and then reflected by the reflecting layer 2 to penetrate through the surface layer 1 to be emitted, so that secondary reflection is formed.
In this embodiment, the composite adhesive film may have a double-layer structure, wherein the surface layer 1 serves as a surface layer to ensure hue of the adhesive film and allow both short wavelength light reflection and long wavelength light transmission, that is, short wavelength light (such as ultraviolet light and/or short wavelength visible light) is reflected according to particle size selection of nanoparticles, and long wavelength light (such as long wavelength visible light and/or near infrared wavelength band) transmission is also ensured, and the reflective layer 2 serves as a bottom layer, which has a high reflection characteristic and can reflect incident light L2 back again to compensate for overall reflectivity of the adhesive film.
As shown in fig. 2, the whole working process of the embodiment is that the irradiation light L1 irradiates the surface layer 1, a part of light includes short wavelength light to form a first reflected light L3, and another part of light includes long wavelength light to enter from the surface layer 1, and the light is reflected by the reflective layer 2 and then passes through the surface layer 1 again to form a second reflected light L4, so as to improve the whole reflection effect of the composite adhesive film; the absorption light of the composite adhesive film is reduced, and the temperature rise of the photovoltaic module is effectively reduced.
Particularly, the first reflected light L3 can enter from one side of the cell 3, and the second reflected light L4 can enter from two sides of the cell 3, wherein the photovoltaic cell can absorb full-wavelength light, i.e. including ultraviolet light, visible light and infrared light, the photovoltaic power generation efficiency is greatly improved,
in this embodiment, the surface layer 1 includes the following raw materials in parts by mass: 93.3-97.5 parts of ethylene resin; 0.4-1.0 part of initiator; 0.5-1.0 part of auxiliary crosslinking agent; 0.2-1.0 part of silane coupling agent; 0.06-0.4 part of antioxidant; 0.04-0.7 part of infrared reflection pigment; 0.5-2 parts of nano particles, wherein the antioxidant is an auxiliary agent for slowing down aging and discoloration of the crosslinked ethylene resin and decomposition; the diameter of the nano particles in the nano particles is less than 1/2 critical light wavelength, and irradiated light which is less than the critical light wavelength is reflected. The particle size of the nanoparticles can be selected from 140-200nm, and in the actual use process, the particle size can also be selected from 140-250nm so as to give consideration to short-wave visible light; in the embodiment, the critical wavelength is 280-400nm, taking 140-200nm as an example; in this example, when the particle size of the nanoparticle is 200nm, the light with a short wavelength is reflected on the surface of the particle by defining the light as a short wavelength when the corresponding short wavelength light is 400nm or less, and the short wavelength light is reflected and the long wavelength light is diffracted as shown in fig. 2, so that the surface layer can be used for both short wavelength reflection and long wavelength light transmission.
The infrared reflective pigment may be, but is not limited to, Black such as Spectrasense Black K0087 and Sicopal (basf series), Black 10G996, Black 30C938 and Black 411A (Shepherd series), Black 32 (K-IMAX).
Of course, other infrared reflective pigments, such as blue, yellow, etc., can be configured according to practical situations.
The thickness of the surface layer 1 is not more than 0.25mm, and specifically may be 0.1 to 0.25mm, and preferably 0.12, 0.15, 0.18, etc., and the following examples will be described in detail.
The nano particles comprise one or more of aluminum oxide, red silicon boroalcalite, crystal, heavy flint glass, zinc sulfide, antimony oxide, gehlenite, lithopone, zinc oxide, periclase, hercynite, barium carbonate, mayenite, lithopone, glass powder, magnesite, zirconia, titanium dioxide and zircon, the particle size distribution of the nano particles is 140-200nm, wherein the particle sizes of the nano particles can be selected according to the wavelengths of reflected and transmitted light rays, such as 140nm, 150nm, 180nm and 200 nm.
In this embodiment, the reflective layer 2 includes the following raw materials in parts by mass: 95-98 parts of ethylene resin; 0.4-1.0 part of initiator; 0.5-1.0 part of auxiliary crosslinking agent; 0.2-1.0 part of silane coupling agent; and 6-9 parts of titanium dioxide. The reflection effect of the reflecting layer 2 can reach about 92%.
In this embodiment, in order to reduce the white overflow phenomenon in the packaging lamination caused by the white overflow of the lower surface layer, the melt index of the resin in the reflective layer 2 is 1-6 g/10min lower than that of the resin in the surface layer 1.
The embodiment also provides a photovoltaic module, as shown in fig. 2, fig. 2 shows a schematic view of a partial structure of the photovoltaic module, which includes a cell sheet 3, a transparent layer 4 (transparent EVA may be adopted), glass 5, and the like, and further includes the above composite adhesive film; the two reflected lights of the composite adhesive film are respectively emitted to the two sides of the battery piece 3.
The embodiment also provides a method for reflecting the irradiation light L1 for the composite adhesive film, which comprises the following steps: a surface layer 1 which is a light-transmitting colored layer containing nanoparticles; and a reflective layer 2 positioned below the surface layer 1; and the reflection method comprises: irradiating the surface layer 1 with irradiation light L1 in which the short wavelength light is directly reflected by the nanoparticles to form first reflected light; and the long-wavelength light is transmitted from the surface layer, reflected by the reflecting layer and emitted through the surface layer to form second reflected light.
Wherein a part of the light comprises short-wavelength ultraviolet light and short-wavelength visible light, and forms first reflected light L3; the other part of the light including the long-wavelength visible light and the infrared light enters from the surface layer, is reflected by the reflecting layer and then passes through the surface layer again to be emitted to form second reflected light L4.
As shown in fig. 2, the whole operation process of the embodiment is that the irradiation light L1 irradiates the surface layer 1, a part of the short wavelength light forms a first reflection light L3, and another part of the light enters from the surface layer 1, is reflected by the reflection layer 2 and then passes through the surface layer 1 again to be emitted out to form a second long wavelength light reflection light L4, so as to improve the overall reflection effect of the composite adhesive film. Under the combined action of the infrared reflection pigment and the nano particles, the absorption light of the composite adhesive film is reduced, the temperature rise of the photovoltaic module is effectively reduced, the secondary utilization of the module to light is improved, and the power of the module is improved.
Particularly, the first reflected light L3 can enter from one surface of the cell piece 3, and the second reflected light L4 can enter from two surfaces of the cell piece 3, so that the photovoltaic power generation efficiency is greatly improved.
TABLE 1 surface layer ingredients ratio table
| Examples | Ethylene resin | Initiator | Auxiliary crosslinking agent | Silane coupling agent | Antioxidant agent | Infrared |
| 1 | 93.3 | 0.4 | 0.5 | 0.3 | 0.06 | BZ-0.04 |
| 2 | 95.2 | 0.5 | 0.5 | 0.2 | 0.08 | BZ-0.1 |
| 3 | 94.5 | 0.5 | 0.6 | 0.5 | 0.1 | BZ-0.2 |
| 4 | 96.0 | 0.6 | 0.8 | 0.6 | 0.2 | BZ-0.4 |
| 5 | 95.8 | 1.0 | 0.7 | 0.8 | 0.25 | BL-0.1 |
| 6 | 96.4 | 0.8 | 1.0 | 0.7 | 0.3 | BL-0.2 |
| 7 | 97.1 | 0.9 | 0.9 | 1.0 | 0.35 | BL-0.6 |
| 8 | 97.5 | 0.7 | 0.7 | 0.9 | 0.4 | BZ-0.2+BL0.5 |
Note: BZ is Spectrasense Black K0087; BL is Black 32 (K-IMAX). BZ-0.04 represents the addition of 0.04 parts of each of the infrared-reflective pigments/dyes in example 1.
The initiator may be: 2-ethylhexyl tert-butylperoxycarbonate, 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane, tert-butyl peroxy-2-ethylhexyl carbonate and/or di-tert-butylperoxydiisopropylbenzene.
The auxiliary crosslinking agent can adopt: one or more of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, pentaerythritol triacrylate and triacrylate isocyanurate.
The silane coupling agent may employ: at least one of vinyltrimethoxysilane, vinyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, and vinyltris (. beta. -methoxyethoxy) silane.
The antioxidant can be selected from: 2, 6-di-tert-butyl-p-cresol, 2, 6-di-tert-butyl-4-ethylphenol, n-octadecyl beta- (4-hydroxy-3, 5-di-tert-butylphenyl) acrylate, and 2, 2' -methylenebis (6-tert-butyl-4-ethylphenol).
TABLE 2 physical data of light-transmitting colored layer in composite adhesive film
The thickness of the black film is 0.1-0.2mm, and the thickness of the white film is 0.2-0.4 mm.
The color phase of the glue film obtained in the embodiments 1 to 8 is close to that of the double-sided crystalline silicon battery, and the laminated assembly can show an integral black appearance effect.
As can be seen from table 2, the light transmittance of the light-transmissive colored layer according to the present embodiment is not less than 60%, and the light transmittance is substantially stabilized at about 80%.
TABLE 3 test data for composite films
The effect of test data corresponding to the addition of nanoparticles of different particle sizes and compositions is shown in table 1, example 7. Table 3 illustrates the reflection of the composite adhesive film as a whole (i.e., black film + white film) including the short wavelength reflection of the black film itself + the reflection of the long wavelength light through the reflective layer. As can be seen from table 3, the added nanoparticles of the composite adhesive film according to the present embodiment can increase the reflectivity of short wavelengths, thereby enhancing the efficiency of the assembly. From the data of the embodiment, the short-wave reflectivity is increased by about 20% from 7.2% of the uncapped nano-particle, and the utilization rate of the short wave is increased by 170% -358% through the data distribution of the embodiment, so that the power of the assembly is improved to a certain extent, and in practical application, the improvement is very objective power improvement.
Other embodiments may also add similar corresponding components of the nanoparticles to achieve similar effects.
For the prior art, the skilled person only considers how to directly improve the reflectivity of a black adhesive film, such as a black infrared reflection type photovoltaic EVA adhesive film disclosed in application No. 201410120277.8; therefore, it is desirable to add a large amount of reflective materials to the components of the adhesive film, but because the black hue has a strong ability to absorb light, even if a large amount of reflective materials are added, the reflective rate can only reach 42% described in the background art, and thus the reflective rate can not be further improved by the technical solution. The invention creatively adds the nano particles in the black adhesive film (surface layer), and utilizes the side effect of certain transmission of the black adhesive film neglected by the infrared reflection pigment to perform differential treatment on short-wavelength light and long-wavelength light, thereby reducing the absorption effect of the black adhesive film on the short-wavelength light and the long-wavelength light, and improving the overall reflectivity of the composite adhesive film by utilizing the advantage of high reflection of the reflection layer 2 of the transmitted long-wavelength light; and the added nano particles greatly improve the reflectivity of near ultraviolet on the basis of not influencing the hue of the surface layer, reduce the absorptivity of the light energy of the whole glue film, reduce the temperature rise effect of a photovoltaic module and keep the hue of the double-sided crystalline silicon battery to be minimum.
TABLE 3 temperature change of black glue film under sunlight for 30min and 60min
The contrast black film selects nanometer reflective particles and black pigment, and the upper table can be clearly known, and this technical scheme is effectual to reduce the temperature that the black glued membrane produced under sunshine shines, reduces photovoltaic module's temperature rise to keep little with the battery piece hue difference.
Therefore, the short-wavelength light and the long-wavelength light are reflected as much as possible, the light energy (the short-wavelength light and the long-wavelength light) absorbed by the adhesive film is converted into reflected light as much as possible, the reflectivity of the short-wavelength light and the reflectivity of the long-wavelength light are improved, high full-spectrum reflectivity is provided, and under the condition that the reflectivity of double reflected light is increased, more light energy is reflected to the photovoltaic module, so that the power generation power of the photovoltaic module is improved. And as the nano particles do not influence the hue, the black dye adhesive film on the surface layer effectively forms a black appearance effect, and the integrated black appearance of the assembly is maintained.
In summary, the composite adhesive film, the photovoltaic module and the method for reflecting the irradiated light for the composite adhesive film of the present invention adopt the modes of transmission and reflection of the sub-bands of the surface layer and the bottom layer to convert the light energy (short wavelength light and long wavelength light) originally absorbed by the adhesive film into the reflected light, thereby not only improving the overall reflectivity of the colored adhesive film, but also reducing the temperature rise of the photovoltaic module, and overcoming the technical problem that the reflectivity and the hue of the black adhesive film are relatively contradictory.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A composite adhesive film, comprising:
a surface layer which is a light-transmitting colored layer containing nano particles; and
a reflective layer laminated on the lower layer of the surface layer;
irradiating the surface layer with the irradiation light, wherein the short wavelength light is directly reflected by the nano particles, and the long wavelength light is transmitted from the surface layer, reflected by the reflecting layer and emitted through the surface layer to form secondary reflection.
2. The composite adhesive film of claim 1,
the surface layer comprises the following raw materials in parts by mass:
93.3-97.5 parts of ethylene resin;
0.4-1.0 part of initiator;
0.5-1.0 part of auxiliary crosslinking agent;
0.2-1.0 part of silane coupling agent;
0.06-0.4 part of antioxidant;
0.04-0.7 part of infrared reflection pigment;
0.2-2 parts of nano particles, wherein the particle size of the nano particles is 140-200 nm.
3. The composite adhesive film of claim 1,
the nano particles comprise one or more of aluminum oxide, red silicon boroalcalite, crystal, heavy flint glass, zinc sulfide, antimony oxide, gehlenite, lithopone, zinc oxide, periclase, hercynite, barium carbonate, mayenite, lithopone, glass powder, magnesite, zirconia, titanium dioxide and zircon, and the particle size of the nano particles is 140-200 nm.
4. The composite adhesive film of claim 1,
the thickness of the surface layer is not more than 0.25 mm.
5. The composite adhesive film of claim 1,
the reflecting layer comprises the following raw materials in parts by mass:
95-98 parts of ethylene resin;
0.4-1.0 part of initiator;
0.5-1.0 part of auxiliary crosslinking agent;
0.2-1.0 part of silane coupling agent; and
6-9 parts of titanium dioxide.
6. The composite adhesive film of claim 1,
the melt index of the resin in the reflecting layer is 1-6 g/10min lower than that of the resin in the surface layer.
7. A photovoltaic module, characterized in that,
the composite adhesive film of claim 1;
and the twice reflected light of the composite adhesive film is emitted to the back surface of the battery piece.
8. A method for reflecting the irradiated light for a composite adhesive film is characterized in that,
the composite adhesive film comprises:
a surface layer which is a light-transmitting colored layer containing nano particles; and
the reflecting layer is positioned at the lower layer of the surface layer; and
the reflection method comprises the following steps:
irradiating the surface layer with irradiation light, wherein the short wavelength light is directly reflected by the nanoparticles to form first reflected light; and the long-wavelength light is transmitted from the surface layer, reflected by the reflecting layer and emitted through the surface layer to form second reflected light.
9. The irradiation light reflection method according to claim 8,
the irradiation light reflection method adopts the composite adhesive film as defined in any one of claims 2 to 6.
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| CN113980588A (en) * | 2021-12-24 | 2022-01-28 | 杭州福斯特应用材料股份有限公司 | Packaging adhesive film and photovoltaic module |
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