JP2018011021A - Ultra-lightweight solar cell module having antiflaming performance available as interior material or exterior material of building, and building installing the same and disaster prevention solar cell module using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultra-lightweight solar cell module having antiflaming performance available as the interior material or exterior material of a building.SOLUTION: A solar cell module consists, from the light-receiving side, of a power generation layer formed by laminating a surface protection film made of transparent resin, and multiple solar cells sealed with a transparent resin sealing material, and a support layer laminated on the side of the power generation layer opposite to the light-receiving surface. The support layer is formed by providing outer layers, respectively, on the light-receiving side of a hard foam layer and the opposite side thereof. Antiflaming layers are provided between the support layer and power generation layer, between the hard foam layer and the outer layer in the support layer, and at least at one position on the side of the support layer opposite to the light-receiving surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a solar cell module, and in particular, can be used as an interior material or an exterior material of a construction, and has an ultralight solar cell module having flameproof performance, a construction in which the solar cell module is installed, and the solar cell module. It relates to a solar cell module for disaster prevention.

  In order to prevent global warming, there is a growing interest in solar power generation that generates power using light energy centered on sunlight for the purpose of saving energy such as reducing the consumption of fossil fuels.

  Conventionally, photovoltaic power generation is performed mainly by installing a solar cell module on the roof / rooftop or idle land of a sunny construction.

  More specifically, as the solar cell module, for example, a solar cell module disclosed in Japanese Patent Application Laid-Open No. 2009-224597 (Patent Document 1) is used. As shown in FIG. 6, the solar cell module includes a plurality of solar cells 101 sealed with a glass substrate 117, a sealing material 118 such as a transparent resin, and a light-resistant film 119 from the light receiving surface side. The outer periphery of the laminate is surrounded by the aluminum frame 120.

  Moreover, installation of a solar cell module is performed as disclosed by Unexamined-Japanese-Patent No. 2014-129709 (patent document 2), for example. As shown in FIG. 7, the solar cell module is installed by laying a foundation 214 on the installation surface as necessary, and then standing a pair of front pillars 218 and a pair of rear pillars 220 in a rectangular shape at predetermined positions, By attaching the pair of receiving beams 222 so as to connect the front pillars 218 and the rear pillars 220, after installing the mount 210, the solar cell module is placed on the pair of receiving pillars 222 and fixed with screws or the like. Done.

  As described above, the conventional solar cell module has a glass substrate on the light receiving surface side and an aluminum frame on the outer periphery. However, the glass substrate is easily damaged, and the solar cell module is heavy. There is a problem that installation and support are difficult. This problem is not so much an obstacle when industrially generating solar power on a large scale, but it is a major obstacle when solar power is generated on a small scale in individual buildings such as houses and buildings. Become.

  Japanese Patent Laying-Open No. 2015-502659 (Patent Document 3) discloses a solar cell module in which such a glass substrate and an aluminum frame are not provided. As shown in FIG. 8, this solar cell module 300 includes a subassembly formed by laminating a solar cell 306 sealed with a cover film 302 and sealing materials 304 and 308 from the light receiving surface side, and this subassembly. The support layer stack 320 is formed by sandwiching a foam layer 314 between two outer skin layers 310 and 318, which is laminated on the back side of the substrate.

JP 2009-224597 A JP 2014-129709 A Japanese Patent Laying-Open No. 2015-502659

  The present invention provides an ultralight solar cell module having flameproof performance that can be used as an interior material or an exterior material of a construction, and the solar cell module is installed on a rooftop, a roof, a side wall, and / or a handrail. An object of the present invention is to provide a construction for performing photovoltaic power generation and to provide a solar cell module for disaster prevention in which the solar cell modules are connected in a foldable manner.

  The inventors of the present invention pay attention to the light weight of the solar cell module disclosed in Patent Document 3, and by imparting performance such as flameproofness to the solar cell module, the solar cell module is used as an interior material or exterior material of a building. The present invention has been made possible by finding that solar power generation can be performed easily, conveniently and economically even when solar power generation is performed on a small scale in individual structures such as houses and buildings. It is.

  The solar cell module of the present invention includes, from the light receiving surface side, a transparent resin surface protective film, a power generation layer including a plurality of solar cells sealed with a transparent resin sealing material, and the power reception layer opposite to the light reception surface. A solar cell module comprising a support layer laminated to the support layer, wherein the support layer includes a hard foam layer and an outer skin layer provided on the opposite side of the light receiving surface of the hard foam layer, and the support layer and the power generation layer Between the hard foam layer and the outer skin layer in the support layer, a layer having flameproofness is provided in at least one place on the opposite side of the light receiving surface of the support layer. Is.

  Moreover, the construction object in which the solar cell module of the present invention is installed is characterized in that the above solar cell module is installed on the roof, roof, side wall and / or handrail of the construction object.

  Moreover, the solar cell module for disaster prevention using the solar cell module of the present invention is characterized in that the above-described solar cell module is divided into a plurality of pieces and connected so as to be foldable like a folding screen.

  Since the solar cell module of the present invention is ultralight and has a flameproof performance, it is simple, convenient and economical even when photovoltaic power generation is performed on a small scale in individual buildings such as houses and buildings. Therefore, solar power generation can be performed, which can greatly contribute to the spread of solar power generation.

  Moreover, the construction object in which the solar cell module of the present invention is installed can perform solar power generation easily, conveniently, and economically by installing the solar cell module.

  Moreover, the solar cell module for disaster prevention using the solar cell module of the present invention can easily carry and install the above solar cell module, and can be used as an emergency power source when a commercial power supply fails during a disaster, It can be used as a power source for lighting fixtures, televisions, radios, mobile phones and the like.

It is a cross-sectional schematic diagram which shows 1st Embodiment of the solar cell module of this invention. It is a cross-sectional schematic diagram which shows 2nd Embodiment of the solar cell module of this invention. It is a cross-sectional schematic diagram which shows 3rd Embodiment of the solar cell module of this invention. It is a cross-sectional schematic diagram which shows 4th Embodiment of the solar cell module of this invention. It is a perspective view which shows the state which expand | deployed the solar cell module for disaster prevention of this invention. It is a cross-sectional schematic diagram of the solar cell module disclosed by patent document 1 (Unexamined-Japanese-Patent No. 2009-224597). It is an external view which shows the installation condition of the solar cell module disclosed by patent document 2 (Unexamined-Japanese-Patent No. 2014-129709). It is a cross-sectional schematic diagram of the solar cell module disclosed by patent document 3 (Unexamined-Japanese-Patent No. 2015-502659).

  Hereinafter, an ultralight solar cell module (hereinafter, also referred to as “solar cell module”) having flameproof performance that can be used as an interior material or an exterior material of the construction of the present invention will be described in detail.

  The feature of the solar cell module of the present invention is that the solar cell module can be used as an interior material or an exterior material of a construction by reducing the weight of the solar cell module and providing performance such as flameproofing performance. Even in the case where solar power generation is performed on a small scale in individual structures such as buildings, solar power generation can be performed easily, conveniently and economically.

  First, the support layer of the solar cell module of the present invention will be described.

  A conventional solar cell module mechanically supports a plurality of solar cells sealed with a sealing material by providing a glass substrate on the light-receiving surface side and an aluminum frame on the outer periphery. There is a problem that it is difficult to manufacture, pack, transport, install and support because the solar cell module is heavy. This problem is not so much an obstacle when industrially generating solar power on a large scale, but it is a major obstacle when solar power is generated on a small scale in individual buildings such as houses and buildings. Become.

  In the solar cell module of the present invention, the solar cell is provided with such a glass substrate, a hard foam layer without using an aluminum frame on the outer periphery, and a support layer including an outer skin layer provided on the opposite side of the light receiving surface of the hard foam layer. The cell is mechanically supported, and the solar cell module can be significantly reduced in weight.

  Examples of the resin used for the hard foam layer include polyethylene terephthalate, polyurethane, polyetherimide, polymethacrylimide, styrene acrylonitrile, polyimide, polyvinyl chloride, polyvinylidene fluoride, polycarbonate, ethylene vinyl acetate, polyisocyanurate, polyethylene, polyethylene. And at least one material selected from the group consisting of naphthalate and polyolefin.

  The hard foam layer has a compressive strength of 0.6 MPa to 7 MPa so that the power generation layer composed of a transparent resin surface protective film, a transparent resin sealing material, a plurality of solar cells and the like can be sufficiently supported. It is preferable that the compression modulus of the hard foam layer is 5 MPa, the shear strength of the hard foam layer is 0.4 MPa to 4.5 MPa, and the shear modulus of the hard foam layer is 10 MPa to 100 MPa.

  An outer skin layer is provided at least on the side opposite to the light receiving surface of the hard foam layer in order to prevent moisture and the like from entering the hard foam layer and to ensure the mechanical strength of the support layer. Although depending on the material and arrangement of the flameproof layer, an outer skin layer can be provided on the light receiving surface side of the hard foam layer in consideration of the mechanical strength of the support layer.

  Examples of materials used for the outer skin layer include polyvinyl fluoride, tetrafluoroethylene polymer, hexafluoropropylene fluoride, vinylidene fluoride, polyvinylidene fluoride, tetrafluoroethylene copolymer, ethylene chlorotrifluoroethylene copolymer, and polyethylene terephthalate. Selected from the group consisting of polyethylene naphthalate, polyamide, polymethyl methacrylate, polycarbonate, polybutylene terephthalate, aluminum, stainless steel, galvanized steel, titanium, copper, molybdenum, glass fiber-containing polyethylene resin, and glass fiber-containing polypropylene resin At least one material or the like.

  Next, the power generation layer of the solar cell module of the present invention will be described.

  Examples of the resin used for the transparent resin surface protective film include polycarbonate, polymethyl methacrylate, cyclic polyolefin, polystyrene, polyethylene terephthalate, polyethylene naphthalate, ethylene-tetrafluoroethylene copolymer, polytetrafluoroethylene, polypropylene, and polyethylene. Is mentioned.

  From the viewpoint of transparency, polycarbonate and polymethyl methacrylate are preferable, and from the viewpoint of transparency and weather resistance, an ethylene-tetrafluoroethylene copolymer is preferable. As the ethylene-tetrafluoroethylene copolymer film, TEFKA (registered trademark, manufactured by DENKA CORPORATION) can be suitably used.

  As a solar cell element, a silicon solar cell element such as a single crystal silicon solar cell element, a polycrystalline silicon solar cell element, an amorphous silicon solar cell element, a microcrystalline silicon solar cell element, or a spherical silicon solar cell element is used. Can do. Moreover, compound solar cell elements, such as a CIS type solar cell element, a CIGS type solar cell element, and a GaAs type solar cell element, can also be adopted. Further, a dye-sensitized solar cell element, an organic thin film solar cell element, a multi-junction solar cell element, a HIT solar cell element, or the like may be employed.

Each electrode of the element of the solar battery cell can be formed using one or more arbitrary materials having conductivity. Examples of the electrode material (electrode constituent material) include metals such as platinum, gold, silver, aluminum, chromium, nickel, copper, titanium, magnesium, calcium, barium, sodium, and alloys thereof; indium oxide and tin oxide Metal oxides such as, or alloys thereof (ITO: indium tin oxide); conductive polymers such as polyaniline, polypyrrole, polythiophene, polyacetylene; acids such as hydrochloric acid, sulfuric acid, sulfonic acid, A material containing a dopant such as a Lewis acid such as FeCl ₃ , a halogen atom such as iodine, or a metal atom such as sodium or potassium; a conductive particle such as a metal particle, carbon black, fullerene, or carbon nanotube; a matrix such as a polymer binder And conductive composite materials dispersed in the above.

  As the transparent resin sealing material, a synthetic resin material that transmits sunlight is preferable, for example, ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, polyethylene, Polyolefin resin such as polypropylene, propylene-ethylene-α-olefin copolymer, polyolefin resin having polar group, butyral resin, styrene resin, epoxy resin, (meth) acrylic resin, urethane resin, silicone resin, synthetic rubber, etc. are used. One or more mixtures or copolymers of these can be used.

  When a fluororesin such as an ethylene-tetrafluoroethylene copolymer is used as the surface protective film made of transparent resin, an ethylene-vinyl acetate copolymer, ethylene-methyl acrylate is used because of its high adhesion to the fluororesin. A copolymer, an ethylene-ethyl acrylate copolymer, a polyolefin resin having a polar group, an epoxy resin, a (meth) acrylic resin, a urethane resin, and a silicon resin are preferable, and an ethylene-vinyl acetate copolymer is particularly preferable.

The layer having flameproofness of the present invention is formed using cellulose nanofibers that have been subjected to an inorganic substance or a flame retardant treatment. As a method of forming a layer having flame resistance,
1) A method of forming by applying, impregnating, and drying a dispersion of inorganic particles or cellulose nanofibers treated with flame retardant (hereinafter referred to as “inorganic particles”) in a solvent,
2) A method of forming using an inorganic fiber cloth or an inorganic fiber cloth impregnated with a resin,
3) A method of forming using a resin to which an inorganic filler or a cellulose nanofiber subjected to a flame retardant treatment (hereinafter referred to as “inorganic filler or the like”) is added,
Etc.

Method 1) In the method 1), as inorganic particles, carbons such as carbon nanotubes and graphite, silica, alumina, titanium oxide, zirconium oxide, bismuth oxide, magnesium oxide, molybdenum oxide, tin oxide, and antimony oxide are used. Examples include inorganic oxides such as cellulose nanofibers that have been subjected to flame retardant treatment, but are excellent in heat resistance as well as flameproofing, preventing the temperature of solar cells from rising due to sunlight and reducing power generation efficiency In view of the above, it is preferable to use carbon nanotubes or graphite.

  Examples of the solvent for dispersing inorganic particles include, for example, polar solvents (water, alcohols, amides, cyclic ethers, ketones, etc.), hydrophobic solvents (aliphatic or aromatic hydrocarbons, aliphatic ketones, etc.) ), Or a mixed solvent thereof or the like. Of these solvents, water is preferably used from the viewpoint of simplicity and operability.

  In order to stably disperse inorganic particles and the like without agglomeration, it is preferable to add a surfactant to the dispersion. The addition amount of the surfactant can be selected, for example, from the range of about 1 to 100 parts by mass (particularly 5 to 50 parts by mass) of the surfactant with respect to 100 parts by mass of the inorganic particles and the like.

  As the surfactant, any of zwitterionic surfactants, anionic surfactants, cationic surfactants, and nonionic surfactants can be used.

  In order to uniformly disperse inorganic particles and the like in a solvent, a general disperser is used. For example, bead mill (Dynomill, Shinmaru Enterprise Co., Ltd.) TK Lab Disper, TK Philmix, TK Pipeline Mixer, TK Homomic Line Mill, TK Homo Jetter, TK Unimixer, TK Homomic Line Flow, TK Aji Homo Disper (Special Machine Industry Co., Ltd.), Homogenizer Polytron (Central Science Trade Co., Ltd.), Homogenizer Histron (Nihon Medical Science Equipment Co., Ltd.), Biomixer (Nippon Seiki Seisakusho Co., Ltd.), Examples include a turbo-type stirrer (Kodaira Seisakusho Co., Ltd.), Ultra Disper (Asada Steel Co., Ltd.), Ebara Mileser (Ebara Seisakusho Co., Ltd.), an ultrasonic device or an ultrasonic cleaner (As One Co., Ltd.) .

Method 2) In the method 2), examples of the inorganic fiber used as the inorganic fiber cloth include carbon fiber, glass fiber, silica fiber, and ceramic fiber. Examples of the woven fabric include plain weave, twill weave, satin weave, etc., and the nonwoven fabric can be obtained by bonding fibers with irregularly oriented fibers by thermocompression bonding or an adhesive. Examples of such woven fabric or non-woven fabric include carbon cloth, glass cloth, silica cloth, ceramic cloth, and the like.

The basis weight of the woven fabric or nonwoven fabric of the inorganic fiber is usually 0.2 mg / m ² or more, preferably 0.5 mg / m ² or more, more preferably 1 mg / m ² or more, and ² mg / m ^2. Most preferably, it is m ² or more. On the other hand, the upper limit is 20 mg / m ² or less, preferably 15 mg / m ² or less, more preferably 10 mg / m ² or less.

  The thickness of the woven or non-woven fabric of the inorganic fiber is 5 μm or more, preferably 10 μm or more, and more preferably 30 μm or more. On the other hand, the upper limit is 500 μm or less, preferably 350 μm or less, and preferably 250 μm or less.

  The thickness of the inorganic fiber is 1 μm or more, preferably 3 μm or more, and more preferably 5 μm or more. On the other hand, the upper limit is 200 μm or less, preferably 100 μm or less, and more preferably 50 μm or less.

  The material, shape, and structure of the above-described inorganic fiber cloth are formed using an inorganic fiber cloth impregnated with a resin even when the flameproof layer is formed using the inorganic fiber cloth. It can also be applied to cases.

  Further, as the inorganic fiber cloth, it is preferable to use a graphite sheet although it is expensive at present. The graphite sheet is produced by a method in which a polymer film such as polyimide is baked for a long time in a high-temperature inert gas or vacuum atmosphere, or a method in which expanded thermally expandable graphite is compressed.

  The graphite sheet is excellent in heat resistance as well as flameproofing, so it can prevent the temperature of the solar cell from rising due to sunlight and lowering the power generation efficiency, and has a metallic luster on the surface. However, since the light reflectance is large, it is possible to increase the power generation efficiency by reflecting sunlight that has passed between the solar cells to the light receiving surface side.

  Examples of the resin impregnated into the inorganic fiber include ethylene-vinyl acetate copolymer, polyvinyl butyral, polyethylene terephthalate, polyethylene naphthalate, (meth) acrylic resin, silicone resin, etc., but ethylene-vinyl acetate copolymer, polyvinyl Butyral and polyethylene terephthalate are preferred.

Method 3) In the method 3), the inorganic filler is carbon such as carbon nanotubes and graphite, silica, alumina, titanium oxide, zirconium oxide, bismuth oxide, magnesium oxide, molybdenum oxide, tin oxide, and antimony oxide. Examples include inorganic oxides such as cellulose nanofibers that have been subjected to flame retardant treatment, but are excellent in heat resistance as well as flameproofing, preventing the temperature of solar cells from rising due to sunlight and reducing power generation efficiency In view of the above, it is preferable to use carbon nanotubes or graphite.

  Examples of the resin to which an inorganic filler is added include ethylene-vinyl acetate copolymer, polyvinyl butyral, polyethylene terephthalate, polyethylene naphthalate, (meth) acrylic resin, silicone resin, and the like. Polymer, polyvinyl butyral and polyethylene terephthalate are preferred.

  The inorganic materials (inorganic particles, inorganic fiber cloth, inorganic filler, etc.) used in the above methods 1) to 3) may be surface-treated. The type and conditions of the surface treatment can be selected as appropriate according to the type of the inorganic substance. As the surface treatment, treatment with styryl silane, vinyl silane, methacryl silane, acrylic silane, epoxy silane, isocyanate silane, amino silane, mercapto silane, sulfide silane, etc. Can be mentioned. From the viewpoint of adhesion to the sealing material, vinyl silane treatment, methacryl silane treatment, and epoxy silane treatment are preferred.

  As shown in FIGS. 1-4, the layer 6 which has a flameproofness can be provided in the light-receiving surface opposite side of the support layer B [the layer containing the hard foam layer 4 and the outer skin layer 5] (FIG. 1), It can also be provided between the support layer B and the power generation layer A [surface protective film 1, a layer including a plurality of solar cells 3 sealed by the sealing material 2] (FIGS. 2 and 4), or It can also be provided between the hard foam layer 4 and the outer skin layer 5 in the support layer B (FIG. 3).

  As a preferred embodiment of the present invention, an embodiment in which a graphite sheet is provided between the support layer B and the power generation layer A as shown in FIG. 1 or FIG. As described above, the graphite sheet is excellent in flame resistance and thermal conductivity and has a high light reflectivity. Therefore, the light receiving surfaces of the plurality of solar cells 3 sealed with the transparent resin sealing material 2 are used. By providing in contact with the opposite side, sunlight passing between the solar cells can be reflected to the light receiving surface side to increase power generation efficiency.

  In the present invention, an excellent flameproof performance can be imparted to the solar cell module by using the “sealing material containing a flame retardant” together with the “layer having flameproofness”. In addition, having a “flameproof layer” makes it possible to reduce the amount of flame retardant used, ensuring sufficient output while providing sufficient flameproofing performance to the solar cell module. it can.

  The flame retardant compounded in the sealing material may be a substance that makes the sealing material layer difficult to burn or prevents the flame from spreading. Examples of such flame retardants include phosphorus flame retardants, halogen flame retardants, inorganic flame retardants, and silicone flame retardants.

  Phosphorus flame retardants include inorganic phosphates such as ammonium polyphosphate, aluminum phosphate and zirconium phosphate; triphenyl phosphate as monophosphate compound, resorcinol bis (dixylenyl phosphate) and bisphenol as condensed phosphate ester Organic phosphoric acid ester flame retardants such as A bis (diphenyl phosphate) and other pentaerythritol diphenyl diphosphates; and red phosphorus flame retardants such as red phosphorus.

  Examples of halogen flame retardants include tetrabromobisphenol A, oligomers of tetrabromobisphenol A, brominated bisphenol epoxy resins, brominated bisphenol phenoxy resins, brominated bisphenol polycarbonates, brominated polystyrene, brominated crosslinked polystyrene, and brominated. Examples include polyphenylene ether, polydibromophenylene ether, decabromodiphenyl oxide bisphenol condensate, and halogen-containing phosphate.

  Examples of the inorganic flame retardant include hydrates of inorganic metal compounds such as aluminum hydroxide and magnesium hydroxide, zinc borate, zinc metaborate, magnesium oxide, molybdenum oxide, zirconium oxide, tin oxide, and antimony oxide. .

  Examples of the silicone flame retardant include a (poly) organosiloxane compound containing a phenyl group, a vinyl group and a methyl group, and a copolymer of a (poly) organosiloxane and a polycarbonate resin.

  Among the above flame retardants, a phosphorus flame retardant and a halogen flame retardant are preferable from the viewpoint of transparency, and an inorganic flame retardant is preferable from the viewpoint of fire resistance. In the present invention, only one flame retardant may be used, or two or more flame retardants may be used in combination. The blending amount of the flame retardant is 10 parts by weight or more, preferably 20 parts by weight or more, and more preferably 30 parts by weight or more with respect to 100 parts by weight of the resin of the sealing material layer. On the other hand, the upper limit is 90 parts by weight or less, preferably 80 parts by weight or less, and more preferably 70 parts by weight or less. By setting it as the said range, flameproofness can be improved and transparency can be ensured.

Since the solar cell module of the present invention is ultralight and has flameproof performance,
It can be used as an interior material or exterior material of a construction. The solar cell module can be provided with a hole for fixing it to another member such as a member of a construction object with a fixing tool such as a screw or a nail.

  A waterproof treatment such as applying a waterproof material is applied to the inner wall surface of the hole so that moisture and moisture do not enter from the hole and deteriorate the solar battery cell.

Since the solar cell module of the present invention is ultralight and has flameproof performance,
It can be easily installed on the rooftop, roof, side wall and / or handrail of a building, and can be solar powered economically.

  In particular, buildings such as houses and buildings are provided with many handrails for preventing falls on the rooftop, veranda, outer stairs, etc. The conventional solar cell module as shown in FIGS. It cannot be easily installed on a handrail. On the other hand, since the solar cell module of the present invention is ultralight and has a flameproof performance and can be easily installed, solar power generation can be effectively performed using such handrails.

  Moreover, since the solar cell module of the present invention is ultralight and has a flameproof performance and can be easily installed, it is also installed on the roof and / or side wall of an agricultural house which is inferior in robustness to general construction. Can do.

  The solar cell module of the present invention is lightweight, and further, it can be easily transported by dividing it into a plurality of pieces and connecting it so that it can be folded like a folding screen, so it can be used as a solar cell module for disaster prevention. it can. In other words, it can be folded and stored during normal times, transported to a disaster area in the event of a disaster, and used to obtain an emergency power source.

  As a solar cell module for disaster prevention, what is shown, for example in FIG. 5 can be illustrated.

  In the solar cell module for disaster prevention shown in FIG. 5, each portion 7 of the four divided solar cell modules is like a folding screen with the light receiving side surface (that is, the surface provided with the surface protection film) facing upward. It is connected so that it can be folded. For connecting the portions 7 of the solar cell module, a known connection method such as a method using a hinge can be used. This solar cell module for disaster prevention can be transported and stored in a state where the portable handles 8 on both sides are overlapped and fixed after each portion 7 of the solar cell module is folded like a folding screen.

  Adhesion between the power generation layer and the support layer in the solar cell module of the present invention, and the adhesion between the hard foam layer, the outer skin layer, and the flameproof layer in the support layer depends on the material forming each layer. When adhesion is not sufficient, adhesion is performed with an adhesive such as an ethylene-vinyl acetate copolymer and an adhesive film interposed.

  1-4, the display of the adhesive agent and adhesive film used suitably according to the material which forms each layer is abbreviate | omitted from such a viewpoint, Comprising: The fact that usage is not indicated does not prohibit the use of adhesives or adhesive films.

DESCRIPTION OF SYMBOLS 1 Surface protective film 2 Sealing material 3 Solar battery cell 4 Hard foam layer 5 Outer skin layer 6 Layer which has flame resistance 7 Each part of the divided solar cell module 8 Portable handle A Power generation layer B Support layer 101 Solar cell 117 Glass substrate 118 Sealing material such as transparent resin 119 Light resistant film 120 Aluminum frame 210 Mounting base 214 Base 218 (Pair) Front pillar 220 (Pair) Rear pillar 222 (Pair) Receiving beam 300 Solar cell module 302 Cover film 304, 308 Encapsulant 306 Solar cell 314 Foam layer 310, 318 (Two) skin layer 320 Support layer stack

Claims (15)

From the light receiving surface side, it consists of a transparent resin surface protective film, a power generation layer including a plurality of solar cells sealed with a transparent resin sealing material, and a support layer laminated on the opposite side of the power generation layer to the light receiving surface. A solar cell module,
The support layer includes a hard foam layer, an outer skin layer provided on the opposite side of the light receiving surface of the hard foam layer,
A layer having flameproofness is provided between the support layer and the power generation layer, between the hard foam layer and the outer skin layer in the support layer, and at least one location on the side opposite to the light receiving surface of the support layer. An ultralight solar cell module having flameproofing performance, which can be used as an interior material or exterior material of a construction.   The interior material or exterior material of a construction according to claim 1, wherein the flameproof layer is formed using an inorganic material or a cellulose nanofiber subjected to a flame retardant treatment. An ultra-lightweight solar cell module with flameproof performance that can be used.   The interior material of a construction according to claim 2, wherein the flameproof layer is formed by applying, impregnating and drying a dispersion in which inorganic particles are dispersed in a solvent. An ultralight solar cell module with flameproofing performance that can be used as an exterior material.   The ultra-light-weight solar cell module having flameproof performance that can be used as an interior material or exterior material of a construction according to claim 3, wherein the inorganic particles are carbon nanotubes or graphite.   3. The flameproof layer is formed using an inorganic fiber cloth, an inorganic fiber cloth impregnated with a resin, or a resin added with an inorganic filler. An ultralight solar cell module having flameproof performance, which can be used as an interior material or exterior material of the described construction.   The interior material or exterior material of a construction according to claim 5, wherein the flameproof layer is formed using a graphite sheet or a graphite sheet impregnated with a resin. An ultra-lightweight solar cell module with flameproof performance that can be used.   The ultra-lightweight solar cell module having flameproof performance, which can be used as an interior material or an exterior material of a construction according to claim 5, wherein the inorganic filler is a carbon nanotube or graphite.   The hard foam layer is made of polyethylene terephthalate, polyurethane, polyetherimide, polymethacrylimide, styrene acrylonitrile, polyimide, polyvinyl chloride, polyvinylidene fluoride, polycarbonate, ethylene vinyl acetate, polyisocyanurate, polyethylene, polyethylene naphthalate, and polyolefin. It is formed with at least one material selected from the group consisting of: Flameproof usable as an interior material or exterior material of a construction according to any one of claims 1 to 7 Ultralight solar cell module with performance. The density of the hard foam ^layer, characterized in that it is a ^{25kg / m 3 ~300kg / m 3} , can be used as interior materials or exterior materials of construction as claimed in any one of claims 1 to 8, proof Ultralight solar module with flame performance.   The interior material for a construction according to any one of claims 1 to 9, wherein the transparent resin surface protective film is made of polycarbonate, polymethyl methacrylate, or ethylene-tetrafluoroethylene copolymer. An ultralight solar cell module with flameproofing performance that can be used as an exterior material.   The outer skin layer is made of polyvinyl fluoride, tetrafluoroethylene polymer, hexafluoropropylene fluoride, vinylidene fluoride, polyvinylidene fluoride, tetrafluoroethylene copolymer, ethylene chlorotrifluoroethylene copolymer, polyethylene terephthalate, polyethylene naphthalate, At least one selected from the group consisting of polyamide, polymethyl methacrylate, polycarbonate, polybutylene terephthalate, aluminum, stainless steel, galvanized steel, titanium, copper, molybdenum, glass fiber-containing polyethylene resin, and glass fiber-containing polypropylene resin An ultra-lightweight solar cell having flameproof performance, which can be used as an interior material or exterior material of a construction according to any one of claims 1 to 10, Module.   The said solar cell module is provided with the hole part for fixing this to another member with fixing tools, such as a screw and a nail, The Claim 1 characterized by the above-mentioned. An ultra-lightweight solar cell module with flameproofing performance that can be used as an interior or exterior material for construction.   A construction in which the solar cell module according to any one of claims 1 to 12 is installed on a roof, a roof, a side wall, and / or a handrail.   The agricultural house which installed the solar cell module in any one of Claims 1-12 in the roof and / or the side wall.   The solar cell module for disaster prevention which divided | segmented the solar cell module in any one of Claims 1-12 into several pieces, and connected so that folding was possible like a folding screen.

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