WO2013105522A1 - 太陽電池モジュール用バックシート、太陽電池モジュール用バックシートの製造方法及び太陽電池モジュール - Google Patents
太陽電池モジュール用バックシート、太陽電池モジュール用バックシートの製造方法及び太陽電池モジュール Download PDFInfo
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- WO2013105522A1 WO2013105522A1 PCT/JP2013/050008 JP2013050008W WO2013105522A1 WO 2013105522 A1 WO2013105522 A1 WO 2013105522A1 JP 2013050008 W JP2013050008 W JP 2013050008W WO 2013105522 A1 WO2013105522 A1 WO 2013105522A1
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- solar cell
- layer
- cell module
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- colored layer
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- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 description 1
- 239000001057 purple pigment Substances 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical compound C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
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- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- ZUSDEBDNDIJDMZ-UHFFFAOYSA-N tert-butyl 7-methyloctaneperoxoate Chemical compound CC(C)CCCCCC(=O)OOC(C)(C)C ZUSDEBDNDIJDMZ-UHFFFAOYSA-N 0.000 description 1
- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 1
- DLSMLZRPNPCXGY-UHFFFAOYSA-N tert-butylperoxy 2-ethylhexyl carbonate Chemical compound CCCCC(CC)COC(=O)OOOC(C)(C)C DLSMLZRPNPCXGY-UHFFFAOYSA-N 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- 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
- H01L31/049—Protective back sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/201—Filters in the form of arrays
-
- 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
-
- 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
- H01L31/056—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means the light-reflecting means being of the back surface reflector [BSR] type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/12—Photovoltaic modules
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
Definitions
- the present invention relates to a back sheet for a solar cell module, which is a unit constituting a solar cell, and a solar cell module using the same.
- This solar cell is composed of a plurality of solar cell modules obtained by packaging a plurality of arrayed solar cells into a unit. As shown in FIG. 5, the general structure of this solar cell module includes a light-transmitting substrate 62 made of glass or the like, a filler layer 63 made of a thermoplastic resin such as ethylene vinyl acetate copolymer, and light.
- a plurality of solar cells 64 as an electromotive force element, a filler layer 65 similar to the filler layer 63, and a solar cell module backsheet 66 are laminated in this order from the front surface side to the back surface side, and vacuum It is integrally molded by the heating lamination method.
- the solar cell module back sheet 66 is visually recognized from the surface side in the gap between the plurality of solar cells 64.
- a solar cell module is often attached to the roof of a general house or the like.
- the solar cell module back sheet 66 is used for a black solar cell module having the same color as the solar cell 64.
- a backsheet may be used.
- the black solar cell module back sheet a sheet obtained by adding carbon black to a sheet base material is generally used.
- carbon black absorbs infrared rays in sunlight
- the temperature of the solar cell module backsheet rises when irradiated with sunlight.
- the power generation efficiency of the solar cell module decreases.
- a back sheet for a solar cell module provided with a black resin layer containing a black perylene pigment has been proposed.
- a base material is proposed.
- a colored resin layer containing an infrared transmitting colorant is laminated on the surface of the sheet, and a black perylene pigment is used as the infrared transmitting colorant.
- This perylene pigment is a pigment showing a color tone from bright red (pigment red 149: PR149) to prawn brown (pigment red 179: PR179) to black.
- pigment red 149: PR149 bright red
- prawn brown pigment red 179: PR179
- black perylene-based pigment becomes red when the molecular arrangement is disturbed due to long-term use or the like and changes from crystalline to amorphous. Therefore, when the black resin layer containing the black perylene pigment is provided in the solar cell module backsheet, the black perylene pigment is discolored by long-term use, and the black solar cell module backsheet In the first place, the purpose may be harmed.
- black perylene pigments that have been treated to suppress the above-mentioned discoloration have been developed, but such black perylene pigments are relatively expensive, and when used in solar cell module backsheets There is also a risk of high costs.
- An object of the present invention is to provide a back sheet for a solar cell module that is difficult to perform, and a solar cell module using the back sheet.
- the present invention has been made to solve the above problems.
- the backsheet for a solar cell module of the present invention comprises a colored layer containing a different lightness L * 45 or three or more colorants of hues, lightness L * of the colored layer comprises a structure 40 or less.
- the said solar cell module backsheet it is arrange
- the colored layer exhibits a substantially black color. It has the advantage that it is difficult for the viewer to identify.
- these three or more colorants each easily absorb visible light having a specific wavelength, but hardly absorb infrared rays. Therefore, even if the colored layer exhibits a black color, it is possible to suppress an increase in temperature due to irradiation with sunlight.
- each colorant of the colored layer has a lightness L * 45 or more, a general colorant can be used, and it is not necessary to use a special colorant, thereby suppressing an increase in cost.
- a general colorant can be used, and it is not necessary to use a special colorant, thereby suppressing an increase in cost.
- the solar cell module backsheet preferably further includes a base sheet on which a colored layer is laminated. Thereby, a colored layer can be formed easily and stably.
- the base sheet is white and the colored layer is laminated on the surface side of the base sheet.
- a part of light rays for example, infrared rays
- the white base sheet a part of the reflected light rays
- Light passes through the colored layer again and exits from the surface side.
- part of the light beam reflected by the base sheet and transmitted again through the colored layer is incident on the solar battery cell, so that the photoelectric conversion efficiency of the solar battery module can be increased and the power generation efficiency can be increased.
- the base sheet is white as described above, it is preferable to employ a base sheet including a base film and a white layer laminated on the surface side of the base film.
- a base sheet including a base film and a white layer laminated on the surface side of the base film.
- the colored layers are arranged in a substantially lattice shape in plan view.
- the entire surface of the solar cell module is viewed from the surface side. Will be black.
- the area of the colored layer is small
- the entire planar solar cell module can exhibit a black color.
- the three or more colorants are preferably at least a red colorant, a blue colorant, and a yellow colorant.
- a colored layer exhibits black only by using a general purpose color material.
- the colorant is preferably a pigment. As described above, by using a general-purpose pigment as the colorant, a colored layer having lower cost and excellent durability can be obtained.
- the method for producing a back sheet for a solar cell module according to the present invention comprises applying a colored layer forming material containing three or more colorants having lightness L * 45 or more different in hue from one surface side of the base sheet. A step of forming a colored layer.
- the said solar cell module backsheet which has an advantage as stated above can be manufactured.
- the solar cell module of the present invention includes a translucent substrate, a filler layer, a solar cell as a photovoltaic element, a filler layer, and the solar cell module backsheet comprising the above-described configuration.
- a colored layer exhibits substantially black
- a photovoltaic cell and a viewer are hard to distinguish
- the said solar cell module backsheet cannot absorb infrared rays easily, and can suppress the temperature rise by irradiation of a sunlight ray.
- a coloring material of the colored layer of the said solar cell module backsheet a general purpose coloring material can be used, and it is low-cost and it is hard to discolor.
- the “lightness L * ” is a numerical value defined by JIS-Z8729, and the lightness L * of the colored layer is 40 or less means that the colored layer containing at least three or more colorants as described above. It means that the lightness L * measured from the side on which the colored layer is visually recognized is 40 or less. Further, the lightness L * of the colorant is 45 or more when a layer having the same thickness as the colored layer is formed by blending one kind of colorant with the same blending amount without containing other colorants. Means that the lightness L * of the layer is 45 or more.
- the “colorant” is a concept including a pigment and a dye. Further, the “surface” means a light receiving side surface of the solar cell module and the back sheet constituting the solar cell module.
- the solar cell module backsheet of the present invention is not easily increased in temperature by irradiation with solar rays even if it has a black appearance, and is used for a long time while suppressing an increase in cost. Also difficult to discolor.
- FIG. 1 Schematic sectional view showing a back sheet for a solar cell module according to an embodiment of the present invention.
- Typical sectional drawing which shows the solar cell module using the back seat
- Typical sectional drawing which shows the solar cell module backsheet which concerns on the form different from the solar cell module backsheet of FIG.
- the graph which shows the relationship between a wavelength when a solar cell module backsheet which concerns on one Embodiment of this invention, and the backsheet which apply
- the back sheet 1 for a solar cell module in FIG. 1 (hereinafter sometimes referred to as the back sheet 1) includes three or more colorants having lightness L * 45 or more different in hue, and a colored layer 2 having a lightness L * of 40 or less. And a base material sheet 3 on which the colored layer 2 is laminated.
- the back sheet 1 includes a gas barrier layer 6 laminated on the back side of the base sheet 3 and a back side base sheet 7 laminated on the back side of the gas barrier layer 6.
- the colored layer 2 is laminated on the surface side of the base sheet 3 and is formed from a resin layer containing a pigment (colorant).
- inorganic pigments and organic pigments can be used, and it is preferable to use inorganic pigments in consideration of cost and durability.
- red pigments, blue pigments, and yellow pigments are preferably used as the three or more kinds of pigments having different hues contained in the colored layer 2.
- this pigment it is also possible to use a green pigment, an orange pigment, a purple pigment, a green pigment, and the like.
- red pigment red inorganic pigments such as red lead and iron oxide red, and red organic pigments such as anthraquinone, quinacridone, and diketopyrrolopyrrole can be used.
- blue pigment blue inorganic pigments such as ultramarine blue and procyan blue, and blue inorganic pigments such as phthalocyanine, anthraquinone and indigoid can be used.
- yellow pigments yellow organic pigments such as yellow lead, zinc yellow (1 type of zinc yellow, 2 types of zinc yellow), isoindolinone, quinophthalone, isoindoline, anthraquinone, anthrone, and xanthene can be used.
- phthalocyanine azomethine, or the like
- orange pigment diketopyrrolopyrrole, perylene, intraquinone (anthrone), perinone, quinacridone, indigoid and the like can be used.
- violet pigment dioxazine, quinacridone, perylene, indigoid, anthraquinone (anthrone), xanthene and the like can be used.
- the average particle diameter of the pigment is preferably from 100 nm to 30 ⁇ m, particularly preferably from 200 nm to 20 ⁇ m. If the average particle diameter of the pigment is less than the above range, it may be difficult to uniformly disperse the pigment. Conversely, if the average particle diameter of the pigment exceeds the above range, the pigment of each color is uniformly dispersed as seen from the plane. There is a risk that it may be difficult to prevent.
- the average thickness of the colored layer 2 is preferably 1 ⁇ m to 300 ⁇ m, more preferably 3 ⁇ m to 150 ⁇ m, and particularly preferably 5 ⁇ m to 50 ⁇ m. If the average thickness is less than the lower limit, the pigment may not be sufficiently added. If the average thickness exceeds the upper limit, the colored layer 2 becomes too thick, and the flexibility of the backsheet 1 is hindered. There is a fear.
- the blending amount of this pigment (the blending amount in terms of solid content of the entire pigment contained in the colored layer 2 with respect to 100 parts by weight of the base polymer in the polymer composition that is the material for forming the resin layer) is 80 parts by weight or more. Is more preferably 100 parts by mass or more, and still more preferably 130 parts by mass or more. Further, the blending amount of the pigment is preferably 300 parts by mass or less, more preferably 200 parts by mass or less, and still more preferably 150 parts by mass or less.
- the blending amount of the pigment is less than the above range, it is difficult to absorb light having a desired wavelength, and it is necessary to increase the thickness of the colored layer 2 in order to reduce the lightness L * , while the blending amount of the pigment exceeds the above range. This is because the strength of the colored layer 2 may be reduced.
- the blending ratio between the plurality of types of pigments is not particularly limited as long as the lightness L * of the colored layer 2 is blended so as to be a certain value or less, but the plurality of types of pigments included in the colored layer 2 include: It is preferable that a basic pigment having a ratio of 20 parts by mass or more with respect to the whole pigment and an auxiliary pigment having a ratio of 20 parts by mass or less with respect to the whole pigment are included.
- auxiliary pigment it is preferable to use a pigment that absorbs light in a wavelength region that is easily transmitted through a layer formed only of the basic pigment.
- one or a plurality of auxiliary pigments can be used, and the total amount of the auxiliary pigment is 30 parts by mass or less, preferably 20 parts by mass or less, more preferably 10 parts by mass with respect to the total pigment. It is preferable that the amount is not more than part.
- the pigment has a lightness L * of preferably 45 or more, more preferably 50 or more, and further preferably 55 or more.
- the lightness L * of the pigment is measured when a layer is formed in the same manner as the colored layer 2 with only one kind of pigment without including other pigments contained in the colored layer 2. It means lightness L * . That is, the blending amount of the red pigment in the coloring layer 2 (the blending amount in terms of solid content of the red pigment contained in the coloring layer 2 with respect to 100 parts by mass of the base polymer in the polymer composition that is the resin layer forming material).
- the compounding amount of the red pigment in the same material as the resin layer forming material of the colored layer 2 (in terms of solid content of the red pigment relative to 100 parts by mass of the base polymer)
- the lightness L * of the layer formed with the same thickness as the colored layer 2 is added.
- the colored layer 2 is a resin layer that melts when heated to form a solar cell module by laminating and bonding the backsheet 1, and is composed of, for example, a resin layer mainly composed of an ethylene-based polymer. Can do.
- ethylene polymer examples include polyethylene such as low density polyethylene, medium density polyethylene, and high density polyethylene, ethylene- ⁇ olefin copolymer, ethylene- (meth) acrylic acid alkyl ester copolymer, ethylene- (meth) acrylic.
- An acid copolymer, an ionic cross-linked product of ethylene- (meth) acrylic acid copolymer, an ethylene-vinyl ester copolymer, and the like can be used. These can be used alone or in combination of two or more.
- ⁇ -olefin constituting the ethylene- ⁇ -olefin copolymer for example, propylene, butene-1, hexene-1, octene-1, 4-methylpentene-1, and the like can be used.
- Examples of the (meth) acrylic acid alkyl ester constituting the ethylene- (meth) acrylic acid alkyl ester copolymer include, for example, methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, n-butyl acrylate, acrylic Isooctyl acid, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate and the like can be used.
- (meth) acrylic acid constituting the ethylene- (meth) acrylic acid copolymer for example, acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride and the like can be used.
- Examples of the vinyl ester constituting the ethylene-vinyl ester copolymer include vinyl acetate and vinyl propionate.
- additives such as an ultraviolet absorber, a light stabilizer, and an antioxidant can be mixed in the forming material of the colored layer 2.
- the additive one or more of an ultraviolet absorber, a light stabilizer, and an antioxidant
- an additive conventionally used in the backsheet 1 can also be used.
- additives such as an organic peroxide, a crosslinking aid, and a silane coupling agent can be mixed in the material for forming the colored layer 2.
- organic peroxide it is preferable to employ one having a decomposition temperature of 145 ° C. or less with a half-life of 10 hours from the viewpoint of reactivity.
- organic peroxides having a decomposition temperature of half hour 10 hours or less include dilauroyl peroxide, 1,1,3,3-tetramethylbutylperoxy-2-ethylhexanoate, dibenzoylperoxide Oxide, t-amylperoxy-2-ethylhexanoate, t-butylperoxy-2-ethylhexanoate, t-butylperoxyisobutyrate, t-butylperoxymaleic acid, 1,1-di (T-amylperoxy) -3,3,5-trimethylcyclohexane, 1,1-di (t-amylperoxy) cyclohexane, t-amylperoxyisononanoate, t-amylper
- the blending amount of the organic peroxide is preferably 0.05 parts by mass or more and 5 parts by mass or less, more preferably 0.1 parts by mass or more and 2.0 parts by mass or less with respect to 100 parts by mass of the ethylene polymer. .
- the amount of the organic peroxide is less than the above lower limit, the formation of a crosslinked structure may be insufficient.
- the upper limit is exceeded, an excessive reaction occurs and the ethylene-based weight is decomposed due to decomposition or the like. Deterioration of coalescence may occur.
- the above-mentioned crosslinking aid is an aid for improving the mechanical strength and the like of the colored layer 2 by increasing the degree of crosslinking of the ethylene polymer.
- this crosslinking aid for example, a compound containing a (meth) acryloxy group, a compound containing an allyl group, or the like can be used.
- (meth) acrylic acid alkyl ester for example, (meth) acrylic acid alkyl ester, (meth) acrylic acid amide and the like can be used.
- alkyl group of the (meth) acrylic acid alkyl ester for example, methyl, ethyl, dodecyl and the like can be used.
- the amount of the crosslinking aid is preferably 0.05 parts by mass or more and 5 parts by mass or less, more preferably 0.1 parts by mass or more and 2.0 parts by mass or less with respect to 100 parts by mass of the ethylene-based polymer. is there.
- the amount of the crosslinking aid is less than the above lower limit, the formation of a crosslinked structure may be insufficient, and when the upper limit is exceeded, the ethylene polymer may be deteriorated due to excessive reaction.
- the hydrogen abstraction type (bimolecular reaction type) photopolymerization initiator for example, benzophenone, methyl orthobenzoylbenzoate, 4-benzoyl-4'-methyldiphenyl sulfide, isopropylthioxanthone, or the like can be used.
- benzoin alkyl ether benzoin alkyl ether, benzyl dimethyl ketal or the like can be used.
- ⁇ -hydroxyalkylphenone type polymerization initiators such as 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, alkylphenylglyoxylate, diethoxyacetophenone, 2-methyl ⁇ -aminoalkylphenone type such as -1- [4- (methylthio) phenyl] -2-morpholinopropane-1,2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1
- a polymerization initiator, an acyl phosphine oxide, etc. can be used as an acyl phosphine oxide, etc.
- silane coupling agent examples include vinyltriethoxysilane, vinyltris ( ⁇ -methoxyethoxy) silane, ⁇ -methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ - Glycidoxypropyltriethoxysilane, ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, ⁇ -chloropropylmethoxysilane, vinyltrichlorosilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, N- ⁇ (aminoethyl) - ⁇ -aminopropyltrimethoxysilane or the like can be used.
- the compounding quantity of a silane coupling agent is 0.1 mass part or more and 5 mass parts with respect to 100 mass parts of ethylene-type polymers.
- the amount of the silane coupling agent is less than the above lower limit, the adhesiveness may be lowered, and when it exceeds the upper limit, sufficient heat resistance, light resistance, and weather resistance may not be obtained.
- the colored layer 2 is formed by applying a coating liquid containing a pigment to the polymer composition, which is a resin layer forming material, on the surface of the substrate sheet 3 (white layer 5). Specifically, a coating liquid in which the above pigment is dissolved or dispersed in a polymer composition is prepared, and this coating liquid is applied to the surface of the base sheet 3 by dipping, flow coating, spraying, bar coating,
- the colored layer 2 can be formed by applying and curing by a coating method such as a gravure coating method, a roll coating method, a blade coating method, and an air knife coating method.
- the colored layer 2 is formed by forming a mixture of a pigment and a polymer composition into a film or sheet using methods such as photocuring, injection molding, T-die molding, calendar molding, compression molding, and casting. A method of adhering to the surface of the base sheet 3 can also be employed. However, the colored layer 2 can be easily and reliably formed by forming the colored layer 2 by coating as described above.
- the said base material sheet 3 is exhibiting white seeing from the surface side, and has the base film 4 which uses a synthetic resin as a material, and the white layer 5 laminated
- the reflectance of the surface of the base sheet 3 is preferably 80.5% or more, whereby the light beam that has passed through the colored layer 2 and entered the surface of the base sheet 3 can be accurately reflected. it can.
- the whiteness of the surface of the base material sheet 3 is 80% or more, More preferably, it is 90% or more, More preferably, it is 94% or more. Thereby, the light which entered the base material sheet 3 from the surface side can be reflected accurately.
- the synthetic resin used for the base film 4 is not particularly limited, and for example, a polyethylene resin, a polypropylene resin, a cyclic polyolefin resin, a polystyrene resin, an acrylonitrile-styrene copolymer (AS resin), Acrylonitrile-butadiene-styrene copolymer (ABS resin), polyvinyl chloride resin, fluorine resin, poly (meth) acrylic resin, polycarbonate resin, polyester resin, polyamide resin, polyimide resin, polyamideimide Examples thereof include resins, polyaryl phthalate resins, silicone resins, polysulfone resins, polyphenylene sulfide resins, polyether sulfone resins, polyurethane resins, acetal resins, and cellulose resins.
- polyester having high heat resistance, strength, weather resistance, durability, gas barrier property against water vapor, etc., withstood the coating conditions of the white layer 5 and excellent in tight adhesion with the white layer 5
- fluorocarbon resins fluororesins and cyclic polyolefin resins are preferred.
- polyester resin examples include polyethylene terephthalate and polyethylene naphthalate.
- polyester-based resins polyethylene terephthalate is particularly preferable because it has a good balance between various functions such as heat resistance and weather resistance, and price.
- fluororesin examples include polytetrafluoroethylene (PTFE), perfluoroalkoxy resin (PFA) made of a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether, and a copolymer of tetrafluoroethylene and hexafluoropropylene (FEP).
- PTFE polytetrafluoroethylene
- PFA perfluoroalkoxy resin
- FEP hexafluoropropylene
- cyclic polyolefin resin for example, a) cyclic dienes such as cyclopentadiene (and derivatives thereof), dicyclopentadiene (and derivatives thereof), cyclohexadiene (and derivatives thereof), norbornadiene (and derivatives thereof) are polymerized. And b) a copolymer obtained by copolymerizing the cyclic diene with one or more olefinic monomers such as ethylene, propylene, 4-methyl-1-pentene, styrene, butadiene, and isoprene. .
- cyclopentadiene (and derivatives thereof), dicyclopentadiene (and derivatives thereof) or norbornadiene (and derivatives thereof) such as polymers having excellent strength, heat resistance, and weather resistance are particularly preferred. preferable.
- the said synthetic resin can be used 1 type or in mixture of 2 or more types.
- various additives and the like can be mixed in the forming material of the base film 4 for the purpose of improving and modifying processability, heat resistance, weather resistance, mechanical properties, dimensional stability, and the like.
- the additive include a lubricant, a crosslinking agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a filler, a reinforcing fiber, a reinforcing agent, an antistatic agent, a flame retardant, a flame retardant, a foaming agent, and an antifungal agent.
- the method for forming the base film 4 is not particularly limited, and known methods such as an extrusion method, a cast forming method, a T-die method, a cutting method, and an inflation method are employed.
- the lower limit of the thickness (average thickness) of the base film 4 is preferably 10 ⁇ m, and particularly preferably 20 ⁇ m.
- the upper limit of the thickness of the base film 4 is preferably 250 ⁇ m and particularly preferably 188 ⁇ m.
- the thickness of the base film 4 is less than the lower limit, problems such as curling tend to occur during the coating of the bead coating layer 3 and handling become difficult.
- the thickness of the base film 4 exceeds the above upper limit, the solar cell module 11 is contrary to the demand for thickness reduction and weight reduction.
- the said white layer 5 is laminated
- Titanium oxide (titanium white) is preferably used as the white pigment.
- the material of the white pigment is not particularly limited, and for example, zinc oxide (zinc white), lead carbonate (lead white), barium sulfate, calcium carbonate (chalk), or the like can be used. However, it is preferable to use titanium oxide from the viewpoint of increasing whiteness and reflectance.
- the surface of the white layer 5 is preferably a substantially flat surface.
- the arithmetic average roughness (Ra) in the three-dimensional surface roughness of the surface of the white layer 5 is preferably 3 ⁇ m or less, more preferably 2 ⁇ m or less, and particularly preferably 1 ⁇ m or less.
- the thickness of the colored layer 2 is likely to be uniform, and the backsheet 1 is less likely to cause color unevenness when viewed from the surface side.
- the average particle size of the white pigment is preferably 100 nm to 30 ⁇ m, particularly preferably 200 nm to 20 ⁇ m. If the average particle diameter of the white pigment is less than the above range, the whiteness and reflectance of the white layer 5 may be too low. Conversely, if the average particle diameter of the white pigment exceeds the above range, This is because the white pigment may cause unevenness on the surface of the white layer 5.
- the average thickness of the white layer 5 is preferably 5 ⁇ m or more and 500 ⁇ m or less, more preferably 10 ⁇ m or more and 200 ⁇ m or less, and particularly preferably 50 ⁇ m or more and 100 ⁇ m or less. If the average thickness is less than the lower limit, the pigment may not be sufficiently added. If the average thickness exceeds the upper limit, the white layer 5 becomes too thick and hinders the flexibility of the backsheet 1. There is a fear.
- the blending amount of the white pigment (the blending amount in terms of solid content of the entire white pigment contained in the white layer 5 with respect to 100 parts by weight of the base polymer in the polymer composition that is the resin layer forming material) is 80 parts by weight or more. Preferably, it is 100 parts by mass or more, and more preferably 130 parts by mass or more. Further, the blending amount of the pigment is preferably 300 parts by mass or less, more preferably 200 parts by mass or less, and still more preferably 150 parts by mass or less. If the blending amount of the white pigment is less than the above range, the whiteness and reflectance may be too low. On the other hand, if the blending amount of the white pigment exceeds the above range, the white pigment may be uneven on the surface of the white layer 5. This is because there is a risk of causing this.
- the white layer 5 is a resin layer that is partially melted when heated to form a solar cell module by laminating and bonding the back sheet 1, and the resin constituting the colored layer 2 described above Similar ones can be used. Further, as the method for laminating the white layer 5, it is possible to adopt the same method as the method for laminating the colored layer 2 described above.
- the gas barrier layer 6 is a layer having a function of reducing permeation of gas such as hydrogen gas and oxygen gas.
- the gas barrier layer 6 includes a film-like or sheet-like base material (not shown) and an inorganic oxide layer (not shown) laminated on the base material.
- the gas barrier layer can also be composed of aluminum foil or the like.
- the base material of the gas barrier layer 6 is formed mainly of a synthetic resin.
- the synthetic resin as the main component of the base material the same synthetic resin as the base material film 4 of the base material sheet 3 is used, and among them, the balance between various functions such as heat resistance and weather resistance and the price side is good. Polyethylene terephthalate is particularly preferred.
- the base material forming method and the additives in the base material are the same as those of the base material film 4 of the base material sheet 3.
- the lower limit of the thickness (average thickness) of the base material of the gas barrier layer 6 is preferably 7 ⁇ m, and particularly preferably 10 ⁇ m.
- the upper limit of the thickness of the substrate is preferably 20 ⁇ m and particularly preferably 15 ⁇ m.
- the inorganic oxide layer is a layer for expressing a gas barrier property against oxygen, water vapor and the like, and is formed by vapor-depositing an inorganic oxide on the back surface of the substrate.
- the vapor deposition means for forming the inorganic oxide layer is not particularly limited as long as the inorganic oxide can be vapor deposited on the synthetic resin base material without causing deterioration such as shrinkage and yellowing.
- Vacuum Physical vapor deposition method Physical Vapor Deposition method; PVD method
- PVD method Physical Vapor Deposition method
- Plasma chemical vapor deposition method thermal chemical vapor deposition method, photochemistry
- a chemical vapor deposition method such as a vapor deposition method is employed.
- a vacuum vapor deposition method and an ion plating method that can form a high-quality inorganic oxide layer with high productivity are preferable.
- the inorganic oxide constituting the inorganic oxide layer is not particularly limited as long as it has gas barrier properties.
- aluminum oxide, silica oxide, titanium oxide, zirconium oxide, zinc oxide, tin oxide, magnesium oxide Among them, aluminum oxide or silica oxide having a good balance between gas barrier properties and price is particularly preferable.
- the lower limit of the thickness (average thickness) of the inorganic oxide layer is preferably 3 mm, and particularly preferably 400 mm.
- the upper limit of the thickness of the inorganic oxide layer is preferably 3000 mm, and particularly preferably 800 mm. If the thickness of the inorganic oxide layer is smaller than the above lower limit, the gas barrier property may be lowered. On the other hand, when the thickness of the inorganic oxide layer exceeds the above upper limit, the flexibility of the inorganic oxide layer is reduced, and defects such as cracks are likely to occur.
- the inorganic oxide layer may have a single layer structure or a multilayer structure of two or more layers.
- the vapor deposition conditions in the physical vapor deposition method and the chemical vapor deposition method are appropriately designed according to the resin type of the substrate, the thickness of the inorganic oxide layer, and the like.
- adhesion improving surface treatment examples include (a) corona discharge treatment, ozone treatment, low temperature plasma treatment using oxygen gas or nitrogen gas, glow discharge treatment, oxidation treatment using chemicals, and the like ( b) Primer coat treatment, undercoat treatment, anchor coat treatment, vapor deposition anchor coat treatment and the like.
- corona discharge treatment and anchor coat treatment that improve adhesion strength with the inorganic oxide layer and contribute to the formation of a dense and uniform inorganic oxide layer are preferable.
- anchor coating agent used for the anchor coating treatment examples include a polyester anchor coating agent, a polyamide anchor coating agent, a polyurethane anchor coating agent, an epoxy anchor coating agent, a phenol anchor coating agent, and a (meth) acrylic anchor coating.
- polyester anchor coating agents that can further improve the adhesive strength between the substrate and the inorganic oxide layer are particularly preferable.
- the lower limit of the coating amount of the anchor coating agent (solid content) is preferably 0.1g / m 2, 1g / m 2 is particularly preferred.
- the upper limit of the amount of coating of the anchor coating agent is preferably 5g / m 2, 3g / m 2 is particularly preferred. If the coating amount of the anchor coating agent is smaller than the above lower limit, the effect of improving the adhesion between the substrate and the inorganic oxide layer may be reduced. On the other hand, when the coating amount of the anchor coating agent exceeds the above upper limit, the strength, durability, and the like of the back sheet 1 may be reduced.
- additives for improving tight adhesion, anti-blocking agents for preventing blocking with a base material, ultraviolet absorbers for improving weather resistance, etc.
- Additives can be mixed as appropriate.
- the amount of the additive to be mixed is preferably 0.1% by weight or more and 10% by weight or less from the balance between the effect expression of the additive and the function inhibition of the anchor coating agent.
- the back side substrate sheet 7 is formed with a synthetic resin as a main component.
- a synthetic resin As a main component.
- Polyethylene naphthalate (PEN) which is excellent in hydrolysis resistance and heat resistance, is used as a synthetic resin as a main component of the hydrolysis resistant resin layer.
- the polyethylene naphthalate is a polyester resin having ethylene naphthalate as a main repeating unit, and synthesized using naphthalenedicarboxylic acid as a main dicarboxylic acid component and ethylene glycol as a main glycol component.
- the ethylene naphthalate unit is preferably 80 mol% or more of all repeating units of the polyester. If the proportion of ethylene naphthalate units is less than 80 mol%, the hydrolysis resistance, strength, and barrier properties of polyethylene naphthalate may be reduced.
- naphthalenedicarboxylic acid examples include 2,6-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 1,3-naphthalenedicarboxylic acid, and the like. In view of surface, 2,6-naphthalenedicarboxylic acid is particularly preferred.
- the back side substrate sheet 7 may contain a carbodiimide compound in polyethylene naphthalate which is a main component.
- a carbodiimide compound in polyethylene naphthalate which is a main component.
- content of this carbodiimide compound 0.1 to 10 mass parts is preferable, and 0.5 to 3 mass parts is particularly preferable.
- the hydrolysis resistance of the back surface side base material sheet 7 can be effectively improved by making content of a carbodiimide compound into the said range.
- carbodiimide compound examples include (a) N, N′-diphenylcarbodiimide, N, N′-diisopropylphenylcarbodiimide, N, N′-dicyclohexylcarbodiimide, 1,3-diisopropylcarbodiimide, and 1- (3-dimethylaminopropyl). And monocarbodiimides such as 3-ethylcarbodiimide, and (b) polycarbodiimide compounds such as poly (1,3,5-triisopropylphenylene-2,4-carbodiimide).
- the molecular weight of the carbodiimide compound is preferably in the range of 200 to 1000, particularly in the range of 200 to 600. When the molecular weight exceeds the above upper limit, the dispersibility of the carbodiimide compound in the resin is lowered, and when the molecular weight is less than the lower limit, the scattering property of the carbodiimide compound may be increased.
- the back side substrate sheet 7 may contain an antioxidant in addition to the carbodiimide compound in polyethylene naphthalate as a main component.
- an antioxidant in addition to the carbodiimide compound in polyethylene naphthalate as a main component.
- the said hydrolysis resistance improves markedly, Furthermore, decomposition
- content of this antioxidant 0.05 mass part or more and 1 mass part or less are preferable, and 0.1 mass part or more and 0.5 mass part or less are especially preferable.
- the content of the antioxidant is less than the above lower limit, the carbodiimide degradation inhibiting function and hydrolysis resistance may be reduced, and if the content of the antioxidant exceeds the above upper limit, the back side substrate sheet 7 There is a risk that the color tone of the product may be impaired.
- the antioxidant hindered phenol compounds and thioether compounds, particularly hindered phenol compounds, are preferable, and the hydrolysis resistance of the back side substrate sheet 76 can be effectively improved.
- the mass ratio of the antioxidant content to the carbodiimide compound content is preferably 0.1 or more and 1.0 or less, and particularly preferably 0.15 or more and 0.8 or less.
- the method for adding the carbodiimide compound and the antioxidant may be a method of kneading into polyethylene naphthalate or a method of adding it to the polycondensation reaction of polyethylene naphthalate.
- the terminal carboxyl group amount of polyethylene naphthalate is preferably 10 eq / T (equivalent / 10 6 g) or more and 40 eq / T or less, particularly preferably 10 eq / T or more and 30 eq / T or less, more preferably 10 eq / T or more and 25 eq / T or less. If the amount of terminal carboxyl groups exceeds the above upper limit, the effect of improving hydrolysis resistance by the carbodiimide compound may be reduced, and if the amount of terminal carboxyl groups is less than the above lower limit, productivity may be reduced.
- the back side substrate sheet 7 may contain an aromatic polyester in addition to polyethylene naphthalate.
- aromatic polyester in polyethylene naphthalate, knot strength, delamination resistance, mechanical strength, and the like can be improved while maintaining the hydrolysis resistance of the back side base sheet 76.
- content of this aromatic polyester 1 to 10 mass parts is preferable. By making content of aromatic polyester into the said range, knot strength, delamination resistance, mechanical strength, etc. can be improved effectively.
- the aromatic polyester is preferably a polyester obtained by copolymerizing a terephthalic acid component and 4,4'-diphenyldicarboxylic acid as a main dicarboxylic acid component and ethylene glycol as a main glycol component.
- the manufacturing method of polyethylene naphthalate is not particularly limited, and various known methods such as a transesterification method and a direct esterification method can be employed.
- the forming method of the back side base sheet 76 and the additives in the forming material of the back side base sheet 7 are the same as those of the base film 4 of the base sheet 3.
- the lower limit of the thickness of the back side substrate sheet 7 is preferably 12 ⁇ m, particularly preferably 25 ⁇ m.
- an upper limit of the thickness of the back surface side base material sheet 7 50 micrometers is preferable and 40 micrometers is especially preferable. If the thickness of the back side substrate sheet 7 is less than the above lower limit, the durability improving effect of the back side substrate sheet 7 due to the hydrolysis resistance of polyethylene naphthalate may not be sufficiently exhibited, and its handling is difficult. Inconvenience, such as becoming. On the contrary, if the thickness of the back surface side base material sheet 7 exceeds the said upper limit, it will be contrary to the request
- Adhesive layer Adhesive layer Adhesive layers are laminated between the base material sheet 3, the gas barrier layer 6, and the back side base material sheet 7 that are superposed as described above (illustration of the adhesive layer is omitted in each figure). Each layer is bonded and fixed by the adhesive layer, the strength, durability, fastness and the like of the backsheet 1 are improved, and further, the function of sealing and protecting the defects of the inorganic oxide layer is exhibited.
- a laminating adhesive or a melt-extruded resin is used as the adhesive constituting the adhesive layer.
- the laminating adhesive include dry laminating adhesive, wet laminating adhesive, hot melt laminating adhesive, non-solvent laminating adhesive, and the like.
- these laminating adhesives a dry laminate having excellent adhesion strength, durability, weather resistance, etc., and a function of sealing and protecting defects (for example, scratches, pinholes, recesses, etc.) on the surface of the inorganic oxide layer.
- adhesives are especially preferred.
- dry laminate adhesive examples include polyvinyl acetate adhesive, homopolymers such as ethyl acrylate, butyl, 2-ethylhexyl ester, and copolymers of these with methyl methacrylate, acrylonitrile, styrene, and the like.
- cellulose adhesive Agent polyester adhesive, polyamide adhesive, polyimide adhesive, urea resin, melamine resin amino resin adhesive, phenol resin adhesive, epoxy adhesive, polyurethane adhesive, reactive type ( (Meth) acrylic adhesive, chloroprene rubber, nitrile
- polyurethane adhesives particularly polyester urethane adhesives.
- the curing agent is preferably an aliphatic polyisocyanate with little thermal yellowing.
- melt-extruded resin examples include a polyethylene resin, a polypropylene resin, an acid-modified polyethylene resin, an acid-modified polypropylene resin, an ethylene-acrylic acid or methacrylic acid copolymer, a Surlyn resin, and an ethylene-vinyl acetate copolymer.
- One or more thermoplastic resins such as polyvinyl acetate resin, ethylene-acrylic acid ester or methacrylic acid ester copolymer, polystyrene resin, and polyvinyl chloride resin can be used.
- the lower limit of the amount of lamination of the adhesive layer (solid content), preferably 1g / m 2, 3g / m 2 is particularly preferred.
- an upper limit of the lamination amount of the adhesive layer 10 g / m 2 is preferable, and 7 g / m 2 is particularly preferable. If the amount of the adhesive layer is less than the above lower limit, the adhesive strength and the defect sealing function of the inorganic oxide layer may not be obtained. On the other hand, when the lamination amount of the adhesive layer exceeds the above upper limit, the lamination strength and durability may be lowered.
- the laminating adhesive or melt-extruded resin for forming the adhesive layer for the purpose of improving and modifying the handling property, heat resistance, weather resistance, mechanical properties, etc., for example, a solvent, a lubricant, a crosslinking agent, Various additives such as antioxidants, ultraviolet absorbers, light stabilizers, fillers, reinforcing fibers, reinforcing agents, antistatic agents, flame retardants, flameproofing agents, foaming agents, antifungal agents, pigments and the like are mixed as appropriate. be able to.
- the manufacturing method of the back sheet 1 includes a step of forming the base sheet 3, a step of laminating the gas barrier layer 6 on the back side of the base sheet 3, and a back side base sheet 7 on the back side of the gas barrier layer 6. It has the process of laminating
- FIG. 1 The manufacturing method of the back sheet 1 includes a step of forming the base sheet 3, a step of laminating the gas barrier layer 6 on the back side of the base sheet 3, and a back side base sheet 7 on the back side of the gas barrier layer 6. It has the process of laminating
- the step of laminating the gas barrier layer 6 is performed by laminating and bonding the base film 4 of the base sheet 3 and the gas barrier layer 6 using an adhesive, and the step of laminating the back side base sheet 7 is also performed.
- the gas barrier layer 6 and the back side substrate sheet 7 are laminated and bonded using an adhesive.
- the process of forming the base material sheet 3 is performed by forming the white layer 5 on the surface of the base film 4.
- the white layer 5 can be formed by applying a coating liquid containing a white pigment to the surface of the base sheet 3, and further bonding the separately formed base sheet 3 and the white layer 5. It is also possible to adopt a method of laminating and bonding with an agent.
- the process of forming the colored layer 2 on the surface of the base material sheet 3 can be performed by coating the surface of the base material sheet 3 with the coating liquid containing a pigment.
- the order of said each process is not specifically limited, For example, after laminating
- a translucent substrate 12, a sheet 13 constituting a front side filling layer, a plurality of solar cells 14, a sheet 15 constituting a back side filling layer, and the back sheet 1 A step of laminating sequentially, and (2) a heat laminating step of integrally forming the laminated body by a vacuum heating lamination method or the like in which the laminated body is integrated by vacuum suction and thermocompression bonded.
- corona discharge treatment, ozone treatment, low-temperature plasma treatment, glow discharge treatment, oxidation treatment, primer coating treatment, undercoat treatment, anchor coating treatment, etc. may be performed on each stacked facing surface. Is possible.
- Translucent substrate 12 The translucent substrate 12 is laminated on the outermost surface, and has (a) transparency to sunlight and electrical insulation, (b) mechanical, chemical and physical strength, specifically Is excellent in weather resistance, heat resistance, durability, water resistance, gas barrier properties against water vapor, wind pressure resistance, chemical resistance, fastness, (c) high surface hardness and accumulation of dirt, dust, etc. on the surface It is required to have excellent antifouling properties.
- the material for forming the translucent substrate 12 glass and synthetic resin are used.
- the synthetic resin used for the translucent substrate 12 include polyethylene resin, polypropylene resin, cyclic polyolefin resin, fluorine resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), and acrylonitrile-butadiene.
- ABS resin polyvinyl chloride resin
- fluorine resin poly (meth) acrylic resin
- polycarbonate resin polyester resins such as polyethylene terephthalate and polyethylene naphthalate
- polyamides such as various nylons Resin, polyimide resin, polyamideimide resin, polyarylphthalate resin, silicone resin, polyphenylene sulfide resin, polysulfone resin, acetal resin, polyethersulfone resin, polyurethane resin , Cellulose-based resins.
- fluorine resins, cyclic polyolefin resins, polycarbonate resins, poly (meth) acrylic resins, or polyester resins are particularly preferable.
- the translucent substrate 12 made of a synthetic resin (a) transparent deposition of an inorganic oxide such as silicon oxide or aluminum oxide on one surface by the PVD method or the CVD method for the purpose of improving gas barrier properties and the like.
- the thickness (average thickness) of the translucent substrate 12 is not particularly limited, and is appropriately selected depending on the material to be used so as to have required strength, gas barrier properties, and the like.
- the thickness of the synthetic resin translucent substrate 12 is preferably 6 ⁇ m or more and 300 ⁇ m or less, and particularly preferably 9 ⁇ m or more and 150 ⁇ m or less.
- the thickness of the glass translucent substrate 12 is generally about 3 mm.
- the sheet 13 constituting the front side filling layer and the sheet 15 constituting the back side filling layer are melted at the time of the heating lamination, and then cooled and solidified, whereby the translucent substrate 12 and the back sheet are obtained. 1 is filled around the solar battery cell 14.
- the filling layer 13 and the filling layer 15 have adhesion to the translucent substrate 12 and the back sheet 1, scratch resistance for protecting the solar battery cell 14, shock absorption, and the like. Furthermore, the filling layer 13 and the filling layer 15 have transparency to transmit sunlight in addition to the above functions.
- an ethylene-vinyl acetate copolymer is preferably used as a material for forming the filling layer 13 and the filling layer 15.
- these synthetic resins ethylene-vinyl acetate resins, fluorine resins, or silicone resins that are excellent in weather resistance, heat resistance, gas barrier properties, and the like are particularly preferable.
- thermoreversible cross-linkable olefin polymer composition disclosed in Japanese Patent Application Laid-Open No. 2000-34376, specifically, (a) an unsaturated carboxylic acid anhydride and A modified olefin polymer modified with a saturated carboxylic acid ester, wherein the average number of bonds of carboxylic anhydride groups per molecule is one or more, and the carboxylic anhydride in the modified olefin polymer A modified olefin polymer in which the ratio of the number of carboxylic acid ester groups to the number of groups is from 0.5 to 20, and (b) a hydroxyl group-containing polymer having an average number of hydroxyl groups per molecule of 1 or more, (a Those having a ratio of the number of hydroxyl groups in component (b) to the number of carboxylic anhydride groups in component (0.1) to 5 are also used.
- the forming material of the filling layer 13 and the filling layer 15 includes, for example, a crosslinking agent, a thermal antioxidant, a light stabilizer, an ultraviolet absorber, and a photoantioxidant for the purpose of improving weather resistance, heat resistance, gas barrier properties, and the like.
- a crosslinking agent for example, a thermal antioxidant, a light stabilizer, an ultraviolet absorber, and a photoantioxidant for the purpose of improving weather resistance, heat resistance, gas barrier properties, and the like.
- Various additives such as these can be appropriately contained.
- the thickness (average thickness) of the formed filling layer 13 and the filling layer 15 (solidified after being thermally melted) is not particularly limited, but is preferably 200 ⁇ m or more and 1000 ⁇ m or less, more preferably 350 ⁇ m or more. 600 ⁇ m or less is particularly preferable.
- the solar battery cell 14 is a photovoltaic element that converts light energy into electrical energy, and is disposed between the filling layer 13 and the filling layer 15.
- the plurality of solar cells 14 are laid in substantially the same plane and slightly apart from each other, and are wired in series or in parallel, although not shown.
- Examples of the solar battery cell 14 include a crystalline silicon solar electronic element such as a single crystal silicon type solar cell element and a polycrystalline silicon type solar cell element, an amorphous silicon solar cell element composed of a single junction type or a tandem structure type, and gallium arsenide.
- Group 3 to 5 compound semiconductor solar electronic devices such as (GaAs) and indium phosphorus (InP)
- Group 2 to 6 compound semiconductor solar electronic devices such as cadmium tellurium (CdTe) and copper indium selenide (CuInSe 2 ) Etc., and those hybrid elements can also be used.
- the filling layer 13 or the filling layer 15 is filled between the plurality of solar cells 14 without any gap.
- Heating lamination process In the heating laminating step of the manufacturing method, the colored layer 2 and the filling layers 13 and 15 on the surface of the back sheet 1 are melted, and these molten resins are integrally bonded. And the colored layer 2 and the filling layers 13 and 15 solidify by cooling, and the said solar cell module 11 will be manufactured.
- FIG. 3 shows the solar cell module 11 manufactured by the above manufacturing method.
- the translucent substrate 12, the filling layer 13, the plurality of solar cells 14, the filling layer 15, and the backsheet 1 are shown in FIG. They are stacked in this order from the surface side.
- the three or more colorants of the colored layer 2 have different hues, and the lightness L * of the colored layer 2 is 40 or less. The cell and the viewer are difficult to identify, and thus the solar cell module 11 is easily visually recognized as viewed from the front side.
- the three or more pigments of the colored layer 2 each easily absorb visible light of a specific wavelength, but hardly absorb infrared rays, so that even if the colored layer 2 is black, it suppresses the temperature rise due to irradiation with sunlight. Can do. Furthermore, since each pigment of the colored layer 2 has a lightness L * 45 or more, a general pigment can be used, and since it is not necessary to use a special pigment, it is possible to suppress an increase in cost. In addition, as compared with the conventional black perylene pigment, it is difficult to discolor even when used for a long time.
- the colored layer 2 can exhibit a black color simply by using a general-purpose pigment. Furthermore, since a pigment is used as a colorant instead of a dye, the colored layer 2 having lower cost and excellent durability can be obtained.
- the colored layer 2 is laminated on the surface side of the base sheet 3 and supported by the base sheet 3, the colored layer 2 can be formed easily and stably.
- the base material sheet 3 is white and the colored layer 2 is laminated
- Some of the transmitted light rays (for example, infrared rays) are reflected by the white base sheet 3, and some of the reflected light rays pass through the colored layer 2 again and exit from the surface side.
- the photoelectric conversion efficiency of the solar battery module can be increased and the power generation efficiency can be increased.
- the base material sheet 3 is provided with the base material film 4 and the white layer 5 laminated
- the base sheet 3 By providing the white layer 5 on the surface side, the retroreflected light does not need to pass through the base film 4, and the light beam reflection efficiency by the base material sheet 3 can be increased.
- this invention is not limited to the structure of the said embodiment. That is, in the said embodiment, although the colored layer 2 was arrange
- the present invention is not limited to the provision of the white layer 5 as in the above embodiment, and the design of the base sheet 3 can be appropriately changed by adopting a white synthetic resin sheet. Is possible.
- the color layer 2 is formed over the entire surface of the base sheet 3.
- the present invention is not limited to this. That is, for example, the case where the colored layer 2 is disposed only on a part of the surface of the base sheet 3 is also within the range intended by the present invention.
- the gaps are arranged so as to cover the gaps in the plan view (parts divided by a lattice shape and the white layer 5 is exposed).
- the entire surface of the solar cell module becomes black when viewed from the front side, and the amount of the pigment (coloring material) used can be reduced because the area of the colored layer 2 is narrow, thereby further reducing the cost. Can do.
- the colored layer 2 demonstrated what has a single layer structure
- the colored layer 2 can also be made into a multilayer structure, and specifically, the color material contained mutually differs. It is also possible to form the colored layer 2 from a plurality of layers. More specifically, for example, a first layer containing a blue pigment is laminated on the surface of the base sheet 3, and a second layer containing a red pigment and a yellow pigment is formed on the surface of the first layer. It is also possible to form the colored layer 2 by laminating from the first layer and the second layer.
- a first layer containing a blue pigment is laminated on the surface of the base sheet 3
- a second layer containing a red pigment is laminated on the surface of the first layer
- a yellow layer is formed on the surface of the second layer. It is also possible to form a colored layer 2 from the first layer, the second layer, and the third layer by laminating a third layer containing a pigment.
- a colored layer can be formed by performing dot printing over the entire surface of the base sheet.
- the colored layer can be comprised, for example from the colored film, This colored film is used for the base sheet. It is also possible to obtain the back sheet by sticking to the surface.
- the back sheet 1 can adopt a configuration that does not have the gas barrier layer 6 or the back-side base sheet 7, and the provision of other layers is a matter that can be appropriately changed in design.
- the base sheet 3 is a white film 5 having a 110 ⁇ m thick polyethylene film (W-PO (white) manufactured by Keiwa Co., Ltd.), and the base film 4 is a 188 ⁇ m thick polyester film (Toray S10 (transparent)). ) And a 25 ⁇ m-thick polytetrafluoroethylene film (25PWA manufactured by Asahi Glass Co., Ltd.) were used.
- the coating liquid is a red pigment having a concentration of 27% (Lamic SR915R Red, manufactured by Dainichi Seika Kogyo Co., Ltd.), and a blue pigment having a concentration of 34.9%, having a concentration of 27% (Lamic manufactured by Dainichi Seika Kogyo Co., Ltd. SR739R indigo) was mixed at a blending ratio of 39.8% and a yellow pigment having a concentration of 27% (Lamic SR722R yellow, manufactured by Dainichi Seika Kogyo Co., Ltd.) at a blending ratio of 25.3%.
- the base sheet 3 having a smaller coating amount had a higher reflectance in the wavelength region of 800 nm to 1200 nm. From the tendency of the graph, it was considered that the reflectance was improved in the above range even when the coating amount was further reduced, and it was found that this contributed to cost reduction.
- the base material sheet 3 to be used is a polyethylene film having a thickness of 110 ⁇ m (W-PO (white) manufactured by Ewa Co., Ltd.) as the white layer 5 and a thickness of 188 ⁇ m as the base film 4.
- W-PO white
- 188 ⁇ m a thickness of 188 ⁇ m as the base film 4.
- the coating solution is a red pigment with a concentration of 27% (Lamic SR915R Red, manufactured by Dainichi Seika Kogyo Co., Ltd.) and a blue pigment with a concentration ratio of 34.9% (Ramic SR739R indigo manufactured by Dainichi Seika Kogyo Co., Ltd.). ) was mixed at a blending ratio of 25.3% with a yellow pigment (Lamic SR722R yellow, manufactured by Dainichi Seika Kogyo Co., Ltd.) having a blending ratio of 39.8% and a concentration of 27%. Then, this coating solution was applied to the surface of the base sheet 3. The coating amount was 1.5 g / m 2 . The lightness L * measured from the side where the colored layer 2 was visually recognized was 24.17.
- Coating method B Three types of coating liquids were respectively applied to the surface of the base sheet 3 in the form of dots at the following ratios.
- a red pigment having a concentration of 27% (Lamic SR915R red, manufactured by Dainichi Seika Kogyo Co., Ltd.) is applied to the surface of the base sheet 3 at a rate of 80% (80% per unit area).
- a blue pigment having a concentration of 27% (Lamic SR739R indigo manufactured by Dainichi Seika Kogyo Co., Ltd.) is applied to the surface of the base sheet 3 at a rate of 80% (80% per unit area).
- a yellow pigment having a concentration of 27% (Lamic SR722R yellow manufactured by Dainichi Seika Kogyo Co., Ltd.) is applied to the surface of the base sheet 3 at a rate of 20% (20% per unit area).
- the lightness L * measured from the side where the colored layer 2 was visually recognized at this time was 39.76. Further, the appearance was close to black.
- the coating method A and the coating method B showed better reflectance in the wavelength region of 800 nm or more than the coating method C in which carbon black was applied.
- the coating method B applied in a dot shape has a higher reflectance in the wavelength region of 200 nm to 800 nm than the coating method A applied by mixing the colorant.
- many solar cell modules used in solar cells can be used for power generation even in the wavelength region of 800 nm or less, and reflecting sunlight of 800 nm or less increases the efficiency of the solar cell. It has been found that dot-coating has a greater effect on solar cell efficiency, and contributes to cost reduction because it results in fewer colorants than mixed coating. .
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Abstract
Description
図1の太陽電池モジュール用バックシート1(以下、バックシート1ということがある)は、互いに色相の異なる明度L*45以上の三種以上の色料を含み明度L*が40以下の着色層2と、この着色層2が積層される基材シート3とを備えている。また、当該バックシート1は、基材シート3の裏面側に積層されるガスバリア層6と、このガスバリア層6の裏面側に積層される裏面側基材シート7とを備えている。
上記着色層2は、基材シート3の表面側に積層されており、顔料(色料)が含有される樹脂層から形成されている。
上記基材シート3は、表面側から見て白色を呈しており、合成樹脂を材料とする基材フィルム4と、この基材フィルム4の表面側に積層される白色層5とを有している。
上記基材フィルム4に用いられる合成樹脂としては、特に限定されるものではなく、例えばポリエチレン系樹脂、ポリプロピレン系樹脂、環状ポリオレフィン系樹脂、ポリスチレン系樹脂、アクリロニトリル-スチレン共重合体(AS樹脂)、アクリロニトリル-ブタジエン-スチレン共重合体(ABS樹脂)、ポリ塩化ビニル系樹脂、フッ素系樹脂、ポリ(メタ)アクリル系樹脂、ポリカーボネート系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、ポリイミド系樹脂、ポリアミドイミド系樹脂、ポリアリールフタレート系樹脂、シリコーン系樹脂、ポリスルホン系樹脂、ポリフェニレンスルフィド系樹脂、ポリエーテルスルホン系樹脂、ポリウレタン系樹脂、アセタール系樹脂、セルロース系樹脂等が挙げられる。上記樹脂の中でも、高い耐熱性、強度、耐候性、耐久性、水蒸気等に対するガスバリア性等を有し、白色層5の塗工条件に耐え、白色層5との密接着性に優れているポリエステル系樹脂、フッ素系樹脂及び環状ポリオレフィン系樹脂が好ましい。
上記白色層5は、基材フィルム4の表面側に積層されており、白色顔料が含有される樹脂層から形成されている。
上記ガスバリア層6は、水素ガス、酸素ガス等のガスの透過を低減する機能を有する層である。このガスバリア層6は、フィルム状あるいはシート状の基材(図示省略)と、この基材に積層された無機酸化層(図示省略)とを備えている。なお、ガスバリア層は、アルミ箔等から構成することも可能である。
裏面側基材シート7は、合成樹脂を主成分として形成されている。この耐加水分解樹脂層の主成分の合成樹脂としては、耐加水分解性及び耐熱性に優れるポリエチレンナフタレート(PEN)が用いられている。
上記のように重畳される基材シート3、ガスバリア層6及び裏面側基材シート7の各層間には接着剤層が積層されている(各図において接着層の図示は省略している)。この接着剤層によって各層が接着固定され、当該バックシート1の強度、耐久性、堅牢性等が向上し、さらに上記無機酸化物層の欠陥を封止及び保護する機能が奏される。
次に、当該バックシート1の製造方法について説明する。
次に、当該バックシート1を用いた太陽電池モジュールの製造方法を説明する。
上記透光性基板12は、最表面に積層されるものであり、(a)太陽光に対する透過性及び電気絶縁性を有すること、(b)機械的、化学的及び物理的強度、具体的には耐候性、耐熱性、耐久性、耐水性、水蒸気等に対するガスバリア性、耐風圧性、耐薬品性、堅牢性に優れること、(c)表面硬度が高く、かつ表面の汚れ、ゴミ等の蓄積を防止する防汚性に優れることが要求される。
また、表面側の充填層を構成するシート13及び裏面側の充填層を構成するシート15は、上記加熱ラミネート時に溶融し、その後冷却されて固化することにより、透光性基板12及び当該バックシート1間における太陽電池セル14の周囲に充填されている。この充填層13及び充填層15は、透光性基板12及びバックシート1との接着性や、太陽電池セル14を保護するための耐スクラッチ性、衝撃吸収性等を有している。さらに、充填層13及び充填層15は、上記諸機能に加え、太陽光を透過する透明性を有している。
上記太陽電池セル14は、光エネルギーを電気エネルギーに変換する光起電力素子であり、充填層13及び充填層15間に配設される。複数枚の太陽電池セル14は、略同一平面内で且つ互いに若干離間して敷設され、図示していないが直列又は並列に配線されている。この太陽電池セル14としては、例えば単結晶シリコン型太陽電池素子、多結晶シリコン型太陽電池素子等の結晶シリコン太陽電子素子、シングル接合型やタンデム構造型等からなるアモルファスシリコン太陽電池素子、ガリウムヒ素(GaAs)やインジウム燐(InP)等の第3~第5族化合物半導体太陽電子素子、カドミウムテルル(CdTe)や銅インジウムセレナイド(CuInSe2)等の第2~第6族化合物半導体太陽電子素子等を使用することができ、それらのハイブリット素子も使用することができる。なお、複数枚の太陽電池セル14の間には、上記充填層13又は充填層15が隙間なく充填されることになる。
上記製造方法の上記加熱ラミネート工程においては、バックシート1の表面の着色層2及び充填層13,15が溶融し、これらの溶融樹脂が一体的に接合される。そして、冷却されることによって着色層2及び充填層13,15が固化して、当該太陽電池モジュール11が製造されることになる。
図3は、上記製造方法によって製造された太陽電池モジュール11を示し、透光性基板12と、充填層13と、複数枚の太陽電池セル14と、充填層15と、当該バックシート1とが表面側からこの順に積層されている。
なお、本発明は上記実施形態の構成に限定されるものではない。つまり、上記実施形態においては、着色層2が最表面に配設されるものについて説明したが、本発明はこれに限定されるものではなく、例えば上記実施形態の着色層2の表面に透明又は半透明な熱融着層を配設することも可能である。
当該バックシート1の着色層2を、基材シート3(白色層5)の表面に塗工液を塗工して形成したときの反射率を計測した。
次に、当該バックシート1の着色層2を、基材シート3(白色層5)の表面に塗工液を塗工して形成したときの反射率について、二種類の塗工方法(塗工方法A及び塗工方法B)とバックシートの表面にカーボンブラックを塗工(塗工方法C)した場合とを計測し比較した。
塗工液は、濃度27%の赤色系顔料(大日精化工業株式会社製ラミックSR915R紅)を配合比34.9%、濃度27%の青色系顔料(大日精化工業株式会社製ラミックSR739R藍)を配合比39.8%、及び濃度27%の黄色系顔料(大日精化工業株式会社製ラミックSR722R黄)を配合比25.3%で混合したもの使用した。そして、この塗工液を基材シート3の表面に塗工した。なお、塗工量は1.5g/m2とした。着色層2が視認される側から測定した明度L*は、24.17であった。
三種類の塗工液をそれぞれ基材シート3の表面に以下の割合でドット状に塗工した。
(1)濃度27%の赤色系顔料(大日精化工業株式会社製ラミックSR915R紅)を基材シート3の表面に対して80%の割合(単位面積あたり80%)で塗工。
(2)濃度27%の青色系顔料(大日精化工業株式会社製ラミックSR739R藍)を基材シート3の表面に対して80%の割合(単位面積あたり80%)で塗工。
(3)濃度27%の黄色系顔料(大日精化工業株式会社製ラミックSR722R黄)を基材シート3の表面に対して20%の割合(単位面積あたり20%)で塗工。
なお、このときの着色層2が視認される側から測定した明度L*は、39.76であった。また、外観は黒色に近いものであった。
カーボンブラックを着色顔料とした塗工液を、基材シート3の表面に塗工した。着色層2が視認される側から測定した明度L*は略0である。
2 着色層
3 基材シート
4 基材フィルム
5 白色層
6 ガスバリア層
7 裏面側基材シート
11 太陽電池モジュール
12 透光性基板
13 充填層
14 太陽電池セル
15 充填層
Claims (9)
- 互いに色相の異なる明度L*45以上の三種以上の色料を含む着色層を備え、
上記着色層の明度L*が、40以下である太陽電池モジュール用バックシート。 - 上記着色層が積層される基材シートをさらに備える請求項1に記載の太陽電池モジュール用バックシート。
- 上記基材シートが白色であり、
上記着色層が基材シートの表面側に積層される請求項2に記載の太陽電池モジュール用バックシート。 - 上記基材シートが、基材フィルムと、この基材フィルムの表面側に積層される白色層とを備える請求項3に記載の太陽電池モジュール用バックシート。
- 上記着色層が、平面視略格子状パターンで配設されている請求項2に記載の太陽電池モジュール用バックシート。
- 上記三種以上の色料が、少なくとも赤色系色料、青色系色料及び黄色系色料である請求項1に記載の太陽電池モジュール用バックシート。
- 上記色料が顔料である請求項1に記載の太陽電池モジュール用バックシート。
- 互いに色相の異なる明度L*45以上の三種以上の色料を含む着色層形成材料の塗工により、基材シートの一方の面側に着色層を形成する工程を有する太陽電池モジュール用バックシートの製造方法。
- 透光性基板と、充填剤層と、光起電力素子としての太陽電池セルと、充填剤層と、請求項1から請求項7のいずれか1項に記載の太陽電池モジュール用バックシートとが表面側からこの順に積層されている太陽電池モジュール。
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2013
- 2013-01-04 JP JP2013553276A patent/JP5945552B2/ja active Active
- 2013-01-04 EP EP13735833.9A patent/EP2803483A4/en not_active Withdrawn
- 2013-01-04 US US14/371,636 patent/US20150075615A1/en not_active Abandoned
- 2013-01-04 CN CN201380005154.3A patent/CN104039553B/zh not_active Expired - Fee Related
- 2013-01-04 WO PCT/JP2013/050008 patent/WO2013105522A1/ja active Application Filing
- 2013-01-11 TW TW102101135A patent/TWI572046B/zh not_active IP Right Cessation
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JP2016034025A (ja) * | 2014-07-30 | 2016-03-10 | エルジー エレクトロニクス インコーポレイティド | 太陽電池モジュール |
KR102253620B1 (ko) | 2014-07-30 | 2021-05-18 | 엘지전자 주식회사 | 태양 전지 모듈 |
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US10141464B2 (en) * | 2014-07-30 | 2018-11-27 | Lg Electronics Inc. | Solar cell module |
US10608130B2 (en) | 2014-07-30 | 2020-03-31 | Lg Electronics Inc. | Solar cell module |
JP2020198445A (ja) * | 2014-09-18 | 2020-12-10 | 大日本印刷株式会社 | 太陽電池モジュール用裏面保護シート |
JP7022358B2 (ja) | 2014-09-30 | 2022-02-18 | 大日本印刷株式会社 | 赤外線反射シート |
JP2020129670A (ja) * | 2014-09-30 | 2020-08-27 | 大日本印刷株式会社 | 赤外線反射シート |
JP2022036985A (ja) * | 2014-09-30 | 2022-03-08 | 大日本印刷株式会社 | 赤外線反射シート |
JP7571821B2 (ja) | 2014-09-30 | 2024-10-23 | 大日本印刷株式会社 | 赤外線反射シート |
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JP2018529228A (ja) * | 2015-09-03 | 2018-10-04 | ボレアリス エージー | 光起電力モジュールの層エレメントのためのポリエチレン組成物 |
JP2017050541A (ja) * | 2015-09-03 | 2017-03-09 | エルジー エレクトロニクス インコーポレイティド | 太陽電池モジュール |
US11834578B2 (en) * | 2019-05-15 | 2023-12-05 | M. Technique Co., Ltd. | Black perylene pigment microparticles, method of producing the same, black pigment composition comprising the same, and method of producing black perylene pigment microparticles having controlled hue and/or chroma |
US20220235227A1 (en) * | 2019-05-15 | 2022-07-28 | M. Technique Co., Ltd. | Black perylene pigment microparticles, method of producing the same, black pigment composition comprising the same, and method of producing black perylene pigment microparticles having controlled hue and/or chroma |
JP2021027266A (ja) * | 2019-08-08 | 2021-02-22 | トヨタ自動車株式会社 | 加飾された太陽電池モジュール |
US11843066B2 (en) | 2019-08-08 | 2023-12-12 | Toyota Jidosha Kabushiki Kaisha | Decorated photovoltaic cell module |
JP7477271B2 (ja) | 2019-08-08 | 2024-05-01 | トヨタ自動車株式会社 | 加飾された太陽電池モジュールの調製方法 |
WO2022200318A1 (de) * | 2021-03-23 | 2022-09-29 | Hanwha Q Cells Gmbh | Rückseitenschichtstapel für ein photovoltaikmodul und ein verfahren zu dessen herstellung |
Also Published As
Publication number | Publication date |
---|---|
EP2803483A4 (en) | 2015-09-09 |
JP5945552B2 (ja) | 2016-07-05 |
EP2803483A1 (en) | 2014-11-19 |
CN104039553B (zh) | 2016-12-28 |
US20150075615A1 (en) | 2015-03-19 |
CN104039553A (zh) | 2014-09-10 |
JPWO2013105522A1 (ja) | 2015-05-11 |
TWI572046B (zh) | 2017-02-21 |
TW201340339A (zh) | 2013-10-01 |
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