WO2013140578A1 - Solar cell module - Google Patents

Solar cell module Download PDF

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Publication number
WO2013140578A1
WO2013140578A1 PCT/JP2012/057363 JP2012057363W WO2013140578A1 WO 2013140578 A1 WO2013140578 A1 WO 2013140578A1 JP 2012057363 W JP2012057363 W JP 2012057363W WO 2013140578 A1 WO2013140578 A1 WO 2013140578A1
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Prior art keywords
solar cell
protective member
cell module
sealing material
adhesive layer
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PCT/JP2012/057363
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French (fr)
Japanese (ja)
Inventor
祐 石黒
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三洋電機株式会社
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Priority to PCT/JP2012/057363 priority Critical patent/WO2013140578A1/en
Publication of WO2013140578A1 publication Critical patent/WO2013140578A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/049—Protective back sheets
    • 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
    • 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

Definitions

  • the present invention relates to a solar cell module.
  • Patent Document 1 describes a solar cell backsheet having a PET film and an adhesive film laminated on the PET film. Patent Document 1 describes that the back sheet described in Patent Document 1 is excellent in adhesiveness with an ethylene / vinyl acetate copolymer.
  • the main object of the present invention is to provide a solar cell module in which the protective member is difficult to peel off.
  • the solar cell module according to the present invention includes a solar cell, a first protection member, a second protection member, and a sealing material.
  • the first protective member is disposed on one side of the solar cell.
  • the second protective member is disposed on the other side of the solar cell.
  • the second protective member is made of a resin sheet.
  • the sealing material is disposed between the first protective member and the second protective member.
  • the sealing material seals the solar cell.
  • the part located between the solar cell and the second protective member of the sealing material contains a crosslinkable resin.
  • the solar cell module according to the present invention further includes an adhesive layer.
  • the adhesive layer is disposed in a partial region between the second protective member and the sealing material.
  • the adhesive layer includes a non-crosslinkable resin.
  • the present invention it is possible to provide a solar cell module in which the protective member is difficult to peel off.
  • FIG. 1 is a schematic cross-sectional view of a solar cell module according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view for explaining a method for manufacturing a solar cell module according to an embodiment of the present invention.
  • the solar cell module 1 has a plurality of solar cells 10 electrically connected by a wiring material (not shown). But the solar cell module may have only one solar cell.
  • the kind of solar cell 10 is not particularly limited.
  • the solar cell 10 can be comprised by a crystalline silicon solar cell, a thin film silicon solar cell, etc., for example.
  • a first protective member 14 is disposed on one side (light-receiving surface side) of the solar cell 10.
  • a second protective member 15 is disposed on the other side (back side) of the solar cell 10.
  • a sealing material 13 is disposed between the first protection member 14 and the second protection member 15.
  • the solar cell 10 is sealed by the sealing material 13.
  • the first protective member 14 can be constituted by, for example, a glass plate, a ceramic plate, a resin plate, or the like.
  • the second protection member 15 is made of a resin sheet.
  • the resin sheet constituting the second protective member 15 can be made of, for example, polyester such as polyethylene terephthalate (PET), acrylic, polyamide, polyimide, or the like.
  • the resin sheet may include a barrier layer made of a metal or an inorganic oxide, for example.
  • the part located between the solar cell 10 and the second protective member 15 of the sealing material 13 contains a crosslinkable resin.
  • the whole sealing material 13 contains a crosslinkable resin.
  • the part located between the solar cell of a sealing material and the 1st protection member does not need to contain crosslinkable resin.
  • the portion located between the solar cell of the encapsulant and the first protective member contains a non-crosslinkable resin, and the portion located between the solar cell of the encapsulant and the second protective member is A non-crosslinkable resin such as polyolefin may be included.
  • the portion of the sealing material 13 located between the solar cell 10 and the second protective member 15 preferably contains, for example, an ethylene / vinyl acetate copolymer (EVA) as a crosslinkable resin.
  • EVA ethylene / vinyl acetate copolymer
  • the adhesive layer 12 is provided in a partial region between the second protective member 15 and the sealing material 13.
  • the adhesive layer 12 covers a part of the second protective member 15. The remaining part of the second protective member 15 is exposed from the adhesive layer 12.
  • the sealing material 13 and the second protective member 15 are bonded directly or indirectly. That is, in the region where the adhesive layer 12 is not provided, the sealing material 13 and the second protective member 15 may be directly bonded or may be bonded by an adhesive.
  • adhesive layers 12 having substantially the same size are schematically drawn at equal intervals, but actually, a plurality of island-shaped adhesive layers 12 of various sizes are randomly arranged. .
  • the adhesive layer 12 and the second protective member 15 may be directly joined or may be adhered by an adhesive.
  • the adhesive layer 12 includes, for example, a non-crosslinkable resin such as polyolefin. Specific examples of the polyolefin preferably used include polyethylene, polypropylene, and polyacrylic acid ester.
  • the adhesion strength between a crosslinkable resin such as ethylene / vinyl acetate copolymer (EVA) and a resin sheet made of polyethylene terephthalate (PET) is low. Therefore, when the second protective member is made of polyethylene terephthalate and the portion of the encapsulating material between the solar cell and the second protective member is made of an ethylene / vinyl acetate copolymer, the second protection member The member is easy to peel off.
  • a crosslinkable resin such as ethylene / vinyl acetate copolymer (EVA) and a resin sheet made of polyethylene terephthalate (PET)
  • non-crosslinkable resins such as polyolefins have high adhesion strength to resin sheets made of polyethylene terephthalate and the like, and also have high adhesion strength to crosslinkable resins such as ethylene / vinyl acetate copolymers. Therefore, by providing an adhesive layer made of a non-crosslinkable resin between the resin sheet and the ethylene / vinyl acetate copolymer, between the sealing material and the adhesive layer, or between the adhesive layer and the resin sheet. Peeling can be suppressed.
  • an adhesive layer made of a non-crosslinkable resin such as polyolefin is easily cohesive. For this reason, when an adhesive layer made of a non-crosslinkable resin is disposed between the resin sheet and the sealing material, the resin sheet is easily peeled due to cohesive failure of the adhesive layer.
  • an adhesive layer 12 containing a non-crosslinkable resin is provided between the second protective member 15 and the sealing material 13. For this reason, the adhesion strength between the 2nd protection member 15 and the sealing material 13 is raised. Further, the adhesive layer 12 is provided in a partial region between the second protective member 15 and the sealing material 13. In the region where the adhesive layer 12 is not provided, the sealing material 13 and the second protective member 15 are directly or indirectly bonded. For this reason, the cohesive failure of the adhesive layer 12 is suppressed. Further, even if the adhesive layer 12 is coherently broken, the sealing material 13 and the second protective member 15 are difficult to peel off. Therefore, in the solar cell module 1, the second protective member 15 is hardly peeled off.
  • the adhesive strength between the adhesive layer 12 and the second protective member 15 is such that the solar cell 10 of the sealing material 13 and the second protective member 15. It is preferable that the adhesive strength between the portion located between the second protective member 15 and the second protective member 15 is higher.
  • the adhesive strength between the adhesive layer 12 and the second protective member 15 is that of the adhesive strength between the second protective member 15 and the portion of the sealing material 13 located between the solar cell 10 and the second protective member 15. It is preferably 1.5 times or more, and more preferably 2 times or more.
  • the area ratio occupied by the adhesive layer 12 is preferably 40% to 80%, more preferably 50% to 70%. preferable.
  • the area ratio of the adhesive layer 12 in the region between the second protective member 15 and the sealing material 13 is too low, peeling occurs at the interface between the second protective member 15 and the sealing material 13. It may be easier.
  • the area ratio occupied by the adhesive layer 12 in the region between the second protective member 15 and the sealing material 13 is too high, the second protective member 15 is easily peeled off due to the cohesive failure of the adhesive layer 12. Become.
  • the solar cell module 1 can be manufactured, for example, in the following manner. That is, as shown in FIG. 2, a first protective member 14 and a resin sheet 16 a for constituting a portion located between the first protective member 14 and the solar cell 10 of the sealing material 13, A solar cell 10, a resin sheet 16b for constituting a portion located between the second protective member 15 of the encapsulant 13 and the solar cell 10, a resin sheet 17 for constituting the adhesive layer 12, The second protective member 15 and the second protective member 15 are laminated in this order to produce the laminated body 20. Next, the solar cell module 1 can be completed by pressing and laminating the laminate 20 while heating.
  • the island-shaped adhesive layer 12 can be provided by increasing the temperature in the initial stage of the lamination process, increasing the press timing, or increasing the press pressure.
  • the temperature, the press timing, the press pressure, and the like at the initial stage of the laminating process can be appropriately set according to the material of the adhesive layer 12, the second protective member 15, and the like.
  • the second protective member 15 is made of a PET sheet
  • the resin sheet 16b is made of an ethylene / vinyl acetate copolymer
  • the resin sheet 17 is made of polyethylene
  • the temperature at the initial stage of the laminating process is 135 ° C.
  • the press timing is preferably 2 to 6 minutes from heating, and more preferably 2 to 4 minutes from heating.
  • the pressing pressure is preferably 0.6 to 2 atm, and more preferably 1.5 to 2 atm.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Laminated Bodies (AREA)

Abstract

Provided is a solar cell module having a protective member that is difficult to peel off. The solar cell module (1) is provided with a solar cell (10), a first protective member (14), a second protective member (15), and a seal member (13). The first protective member (14) is disposed on one side of the solar cell (10). The second protective member (15) is disposed on the other side of the solar cell (10). The second protective member (15) is composed of a resin sheet. The seal member (13) is disposed between the first protective member (14) and the second protective member (15). The seal member (13) seals the solar cell (10). The portion of the seal member (13) positioned between the solar cell (10) and the second protective member (15) includes a cross-linking resin. The solar cell module (1) is further provided with an adhesive layer (12). The adhesive layer (12) is disposed in a portion of the area between the second protective member (15) and the seal member (13). The adhesive layer (12) includes a non-cross-linking resin.

Description

太陽電池モジュールSolar cell module
　本発明は、太陽電池モジュールに関する。 The present invention relates to a solar cell module.
　特許文献１には、ＰＥＴフィルムと、ＰＥＴフィルムに積層された接着性フィルムとを有する太陽電池用バックシートが記載されている。特許文献１には、特許文献１に記載のバックシートがエチレン・酢酸ビニル共重合体との接着性に優れている旨が記載されている。 Patent Document 1 describes a solar cell backsheet having a PET film and an adhesive film laminated on the PET film. Patent Document 1 describes that the back sheet described in Patent Document 1 is excellent in adhesiveness with an ethylene / vinyl acetate copolymer.
特開２０１１－１６５９０８号公報JP 2011-165908 A
　保護部材の剥離を抑制したいという要望が高まってきている。 Demand to suppress peeling of protective members is increasing.
　本発明は、保護部材が剥離しにくい太陽電池モジュールを提供することを主な目的とする。 The main object of the present invention is to provide a solar cell module in which the protective member is difficult to peel off.
　本発明に係る太陽電池モジュールは、太陽電池と、第１の保護部材と、第２の保護部材と、封止材とを備える。第１の保護部材は、太陽電池の一方側に配されている。第２の保護部材は、太陽電池の他方側に配されている。第２の保護部材は、樹脂シートからなる。封止材は、第１の保護部材と第２の保護部材との間に配されている。封止材は、太陽電池を封止している。封止材の太陽電池と第２の保護部材との間に位置する部分は、架橋性樹脂を含む。本発明に係る太陽電池モジュールは、接着層をさらに備える。接着層は、第２の保護部材と封止材との間の一部の領域に配されている。接着層は、非架橋性樹脂を含む。 The solar cell module according to the present invention includes a solar cell, a first protection member, a second protection member, and a sealing material. The first protective member is disposed on one side of the solar cell. The second protective member is disposed on the other side of the solar cell. The second protective member is made of a resin sheet. The sealing material is disposed between the first protective member and the second protective member. The sealing material seals the solar cell. The part located between the solar cell and the second protective member of the sealing material contains a crosslinkable resin. The solar cell module according to the present invention further includes an adhesive layer. The adhesive layer is disposed in a partial region between the second protective member and the sealing material. The adhesive layer includes a non-crosslinkable resin.
　本発明によれば、保護部材が剥離しにくい太陽電池モジュールを提供することができる。 According to the present invention, it is possible to provide a solar cell module in which the protective member is difficult to peel off.
図１は、本発明の一実施形態に係る太陽電池モジュールの模式的断面図である。FIG. 1 is a schematic cross-sectional view of a solar cell module according to an embodiment of the present invention. 図２は、本発明の一実施形態における太陽電池モジュールの製造方法を説明するための略図的断面図である。FIG. 2 is a schematic cross-sectional view for explaining a method for manufacturing a solar cell module according to an embodiment of the present invention.
　以下、本発明を実施した好ましい形態の一例について説明する。但し、下記の実施形態は、単なる例示である。本発明は、下記の実施形態に何ら限定されない。 Hereinafter, an example of a preferable embodiment in which the present invention is implemented will be described. However, the following embodiment is merely an example. The present invention is not limited to the following embodiments.
　また、実施形態等において参照する各図面において、実質的に同一の機能を有する部材は同一の符号で参照することとする。また、実施形態等において参照する図面は、模式的に記載されたものであり、図面に描画された物体の寸法の比率などは、現実の物体の寸法の比率などとは異なる場合がある。図面相互間においても、物体の寸法比率等が異なる場合がある。具体的な物体の寸法比率等は、以下の説明を参酌して判断されるべきである。 In each drawing referred to in the embodiment and the like, members having substantially the same function are referred to by the same reference numerals. The drawings referred to in the embodiments and the like are schematically described, and the ratio of the dimensions of the objects drawn in the drawings may be different from the ratio of the dimensions of the actual objects. The dimensional ratio of the object may be different between the drawings. The specific dimensional ratio of the object should be determined in consideration of the following description.
　図１に示されるように、太陽電池モジュール１は、図示しない配線材により電気的に接続された複数の太陽電池１０を有する。もっとも、太陽電池モジュールは、ひとつの太陽電池のみを有していてもよい。太陽電池１０の種類は、特に限定されない。太陽電池１０は、例えば、結晶シリコン太陽電池や薄膜シリコン太陽電池等により構成することができる。 As shown in FIG. 1, the solar cell module 1 has a plurality of solar cells 10 electrically connected by a wiring material (not shown). But the solar cell module may have only one solar cell. The kind of solar cell 10 is not particularly limited. The solar cell 10 can be comprised by a crystalline silicon solar cell, a thin film silicon solar cell, etc., for example.
　太陽電池１０の一方側（受光面側）には、第１の保護部材１４が配されている。太陽電池１０の他方側（裏面側）には、第２の保護部材１５が配されている。第１の保護部材１４と第２の保護部材１５との間には、封止材１３が配されている。この封止材１３によって太陽電池１０が封止されている。第１の保護部材１４は、例えばガラス板、セラミック板、樹脂板等により構成することができる。第２の保護部材１５は、樹脂シートからなる。第２の保護部材１５を構成している樹脂シートは、例えば、ポリエチレンテレフタレート（ＰＥＴ）等のポリエステル、アクリル、ポリアミド、ポリイミド等により構成することができる。樹脂シートは、例えば、金属や無機酸化物からなるバリア層を含んでいてもよい。 A first protective member 14 is disposed on one side (light-receiving surface side) of the solar cell 10. A second protective member 15 is disposed on the other side (back side) of the solar cell 10. A sealing material 13 is disposed between the first protection member 14 and the second protection member 15. The solar cell 10 is sealed by the sealing material 13. The first protective member 14 can be constituted by, for example, a glass plate, a ceramic plate, a resin plate, or the like. The second protection member 15 is made of a resin sheet. The resin sheet constituting the second protective member 15 can be made of, for example, polyester such as polyethylene terephthalate (PET), acrylic, polyamide, polyimide, or the like. The resin sheet may include a barrier layer made of a metal or an inorganic oxide, for example.
　封止材１３の太陽電池１０と第２の保護部材１５との間に位置する部分は、架橋性樹脂を含む。太陽電池モジュール１では、封止材１３の全体が架橋性樹脂を含んでいる。もっとも、封止材の太陽電池と第１の保護部材との間に位置する部分は、架橋性樹脂を含んでいなくてもよい。例えば、封止材の太陽電池と第１の保護部材との間に位置する部分が非架橋性樹脂を含み、封止材の太陽電池と第２の保護部材との間に位置する部分が、ポリオレフィンなどの非架橋性樹脂を含んでいてもよい。 The part located between the solar cell 10 and the second protective member 15 of the sealing material 13 contains a crosslinkable resin. In the solar cell module 1, the whole sealing material 13 contains a crosslinkable resin. But the part located between the solar cell of a sealing material and the 1st protection member does not need to contain crosslinkable resin. For example, the portion located between the solar cell of the encapsulant and the first protective member contains a non-crosslinkable resin, and the portion located between the solar cell of the encapsulant and the second protective member is A non-crosslinkable resin such as polyolefin may be included.
　封止材１３の太陽電池１０と第２の保護部材１５との間に位置する部分は、架橋性樹脂として、例えば、エチレン・酢酸ビニル共重合体（ＥＶＡ）を含んでいることが好ましい。 The portion of the sealing material 13 located between the solar cell 10 and the second protective member 15 preferably contains, for example, an ethylene / vinyl acetate copolymer (EVA) as a crosslinkable resin.
　第２の保護部材１５と封止材１３との間の一部の領域には、接着層１２が設けられている。接着層１２は、第２の保護部材１５の一部を覆っている。第２の保護部材１５の残りの一部は、接着層１２から露出している。接着層１２が設けられていない領域において、封止材１３と第２の保護部材１５とは、直接または間接的に接着されている。すなわち、接着層１２が設けられていない領域において、封止材１３と第２の保護部材１５とは、直接接合されていてもよいし、接着剤により接着されていてもよい。図１においては、実質的に同じ大きさの接着層１２が等間隔に模式的に描画しているが、実際は、種々の大きさの複数の島状の接着層１２がランダムに配されている。接着層１２と第２の保護部材１５とは、直接接合されていてもよいし、接着剤によって接着されていてもよい。接着層１２は、例えば、ポリオレフィンなどの非架橋性樹脂を含む。好ましく用いられるポリオレフィンの具体例としては、例えば、ポリエチレン、ポリプロピレン及びポリアクリル酸エステル等が挙げられる。 The adhesive layer 12 is provided in a partial region between the second protective member 15 and the sealing material 13. The adhesive layer 12 covers a part of the second protective member 15. The remaining part of the second protective member 15 is exposed from the adhesive layer 12. In the region where the adhesive layer 12 is not provided, the sealing material 13 and the second protective member 15 are bonded directly or indirectly. That is, in the region where the adhesive layer 12 is not provided, the sealing material 13 and the second protective member 15 may be directly bonded or may be bonded by an adhesive. In FIG. 1, adhesive layers 12 having substantially the same size are schematically drawn at equal intervals, but actually, a plurality of island-shaped adhesive layers 12 of various sizes are randomly arranged. . The adhesive layer 12 and the second protective member 15 may be directly joined or may be adhered by an adhesive. The adhesive layer 12 includes, for example, a non-crosslinkable resin such as polyolefin. Specific examples of the polyolefin preferably used include polyethylene, polypropylene, and polyacrylic acid ester.
　ところで、エチレン・酢酸ビニル共重合体（ＥＶＡ）などの架橋性樹脂と、ポリエチレンテレフタレート（ＰＥＴ）等からなる樹脂シートとの密着強度は低い。このため、第２の保護部材をポリエチレンテレフタレートにより構成し、封止材の太陽電池と第２の保護部材との間の部分をエチレン・酢酸ビニル共重合体により構成した場合は、第２の保護部材が剥離しやすい。 Incidentally, the adhesion strength between a crosslinkable resin such as ethylene / vinyl acetate copolymer (EVA) and a resin sheet made of polyethylene terephthalate (PET) is low. Therefore, when the second protective member is made of polyethylene terephthalate and the portion of the encapsulating material between the solar cell and the second protective member is made of an ethylene / vinyl acetate copolymer, the second protection member The member is easy to peel off.
　一方、ポリオレフィンなどの非架橋性樹脂は、ポリエチレンテレフタレート等からなる樹脂シートに対する密着強度も高く、エチレン・酢酸ビニル共重合体などの架橋性樹脂に対する密着強度も高い。このため、樹脂シートとエチレン・酢酸ビニル共重合体との間に非架橋性樹脂からなる接着層を設けることにより、封止材と接着層との間や、接着層と樹脂シートとの間における剥離を抑制することができる。 On the other hand, non-crosslinkable resins such as polyolefins have high adhesion strength to resin sheets made of polyethylene terephthalate and the like, and also have high adhesion strength to crosslinkable resins such as ethylene / vinyl acetate copolymers. Therefore, by providing an adhesive layer made of a non-crosslinkable resin between the resin sheet and the ethylene / vinyl acetate copolymer, between the sealing material and the adhesive layer, or between the adhesive layer and the resin sheet. Peeling can be suppressed.
　しかしながら、ポリオレフィンなどの非架橋性樹脂からなる接着層は、凝集破壊されやすい。このため、非架橋性樹脂からなる接着層を、樹脂シートと封止材との間の全体に配した場合は、接着層の凝集破壊に起因して樹脂シートが剥離しやすい。 However, an adhesive layer made of a non-crosslinkable resin such as polyolefin is easily cohesive. For this reason, when an adhesive layer made of a non-crosslinkable resin is disposed between the resin sheet and the sealing material, the resin sheet is easily peeled due to cohesive failure of the adhesive layer.
　太陽電池モジュール１では、非架橋性樹脂を含む接着層１２が第２の保護部材１５と封止材１３との間に設けられている。このため、第２の保護部材１５と封止材１３との間の密着強度が高められている。さらに、接着層１２は、第２の保護部材１５と封止材１３との間の一部の領域に設けられている。接着層１２が設けられていない領域においては、封止材１３と第２の保護部材１５とが直接または間接的に接着されている。このため、接着層１２の凝集破壊が抑制されている。また、接着層１２が仮に凝集破壊したとしても、封止材１３と第２の保護部材１５とが剥離しにくい。従って、太陽電池モジュール１では、第２の保護部材１５の剥離が生じ難い。 In the solar cell module 1, an adhesive layer 12 containing a non-crosslinkable resin is provided between the second protective member 15 and the sealing material 13. For this reason, the adhesion strength between the 2nd protection member 15 and the sealing material 13 is raised. Further, the adhesive layer 12 is provided in a partial region between the second protective member 15 and the sealing material 13. In the region where the adhesive layer 12 is not provided, the sealing material 13 and the second protective member 15 are directly or indirectly bonded. For this reason, the cohesive failure of the adhesive layer 12 is suppressed. Further, even if the adhesive layer 12 is coherently broken, the sealing material 13 and the second protective member 15 are difficult to peel off. Therefore, in the solar cell module 1, the second protective member 15 is hardly peeled off.
　第２の保護部材１５の剥離をより効果的に抑制する観点からは、接着層１２と第２の保護部材１５との接着強度が、封止材１３の太陽電池１０と第２の保護部材１５との間に位置する部分と第２の保護部材１５との接着強度よりも高いことが好ましい。接着層１２と第２の保護部材１５との接着強度は、封止材１３の太陽電池１０と第２の保護部材１５との間に位置する部分と第２の保護部材１５との接着強度の１．５倍以上であることが好ましく、２倍以上であることがより好ましい。また、第２の保護部材１５と封止材１３との間の領域において、接着層１２が占める面積割合は、４０％～８０％であることが好ましく、５０％～７０％であることがより好ましい。第２の保護部材１５と封止材１３との間の領域における、接着層１２が占める面積割合が低すぎると、第２の保護部材１５と封止材１３との間の界面において剥離が生じやすくなる場合がある。第２の保護部材１５と封止材１３との間の領域における、接着層１２が占める面積割合が高すぎると、接着層１２の凝集破壊に起因する第２の保護部材１５の剥離が生じやすくなる。 From the viewpoint of more effectively suppressing the peeling of the second protective member 15, the adhesive strength between the adhesive layer 12 and the second protective member 15 is such that the solar cell 10 of the sealing material 13 and the second protective member 15. It is preferable that the adhesive strength between the portion located between the second protective member 15 and the second protective member 15 is higher. The adhesive strength between the adhesive layer 12 and the second protective member 15 is that of the adhesive strength between the second protective member 15 and the portion of the sealing material 13 located between the solar cell 10 and the second protective member 15. It is preferably 1.5 times or more, and more preferably 2 times or more. In the region between the second protective member 15 and the sealing material 13, the area ratio occupied by the adhesive layer 12 is preferably 40% to 80%, more preferably 50% to 70%. preferable. If the area ratio of the adhesive layer 12 in the region between the second protective member 15 and the sealing material 13 is too low, peeling occurs at the interface between the second protective member 15 and the sealing material 13. It may be easier. When the area ratio occupied by the adhesive layer 12 in the region between the second protective member 15 and the sealing material 13 is too high, the second protective member 15 is easily peeled off due to the cohesive failure of the adhesive layer 12. Become.
　太陽電池モジュール１は、例えば、以下の要領で製造することができる。すなわち、図２に示されるように、第１の保護部材１４と、封止材１３の第１の保護部材１４と太陽電池１０との間に位置する部分を構成するための樹脂シート１６ａと、太陽電池１０と、封止材１３の第２の保護部材１５と太陽電池１０との間に位置する部分を構成するための樹脂シート１６ｂと、接着層１２を構成するための樹脂シート１７と、第２の保護部材１５とをこの順番で積層し、積層体２０を作製する。次に、この積層体２０を加熱しながら加圧し、ラミネートすることにより、太陽電池モジュール１を完成させることができる。 The solar cell module 1 can be manufactured, for example, in the following manner. That is, as shown in FIG. 2, a first protective member 14 and a resin sheet 16 a for constituting a portion located between the first protective member 14 and the solar cell 10 of the sealing material 13, A solar cell 10, a resin sheet 16b for constituting a portion located between the second protective member 15 of the encapsulant 13 and the solar cell 10, a resin sheet 17 for constituting the adhesive layer 12, The second protective member 15 and the second protective member 15 are laminated in this order to produce the laminated body 20. Next, the solar cell module 1 can be completed by pressing and laminating the laminate 20 while heating.
　例えば、ラミネート工程初期における温度を低くしたり、プレスのタイミングを遅くしたりした場合は、層状の接着層が形成される。一方、ラミネート工程初期における温度を高くしたり、プレスタイミングを早くしたり、プレス圧を高くすることにより、島状の接着層１２を設けることができる。ラミネート工程初期における温度や、プレスタイミング、プレス圧等は、例えば、接着層１２、第２の保護部材１５などの材質等に応じて適宜設定することができる。例えば、第２の保護部材１５がＰＥＴシートからなり、樹脂シート１６ｂがエチレン・酢酸ビニル共重合体からなり、樹脂シート１７がポリエチレンからなる場合は、ラミネート工程初期における温度は、１３５℃～１６５℃であることが好ましく、１５５℃～１６５℃であることがより好ましい。プレスタイミングは、加熱から２分～６分であることが好ましく、加熱から２分～４分であることがより好ましい。プレス圧は、０．６気圧～２気圧であることが好ましく、１．５気圧～２気圧であることがより好ましい。 For example, when the temperature in the initial stage of the laminating process is lowered or the timing of pressing is delayed, a layered adhesive layer is formed. On the other hand, the island-shaped adhesive layer 12 can be provided by increasing the temperature in the initial stage of the lamination process, increasing the press timing, or increasing the press pressure. The temperature, the press timing, the press pressure, and the like at the initial stage of the laminating process can be appropriately set according to the material of the adhesive layer 12, the second protective member 15, and the like. For example, when the second protective member 15 is made of a PET sheet, the resin sheet 16b is made of an ethylene / vinyl acetate copolymer, and the resin sheet 17 is made of polyethylene, the temperature at the initial stage of the laminating process is 135 ° C. to 165 ° C. It is preferable that the temperature is 155 ° C. to 165 ° C. The press timing is preferably 2 to 6 minutes from heating, and more preferably 2 to 4 minutes from heating. The pressing pressure is preferably 0.6 to 2 atm, and more preferably 1.5 to 2 atm.
１…太陽電池モジュール
１０…太陽電池
１２…接着層
１３…封止材
１４…第１の保護部材
１５…第２の保護部材 DESCRIPTION OF SYMBOLS 1 ... Solar cell module 10 ... Solar cell 12 ... Adhesion layer 13 ... Sealing material 14 ... 1st protection member 15 ... 2nd protection member

Claims (6)

  1. 　太陽電池と、
    　前記太陽電池の一方側に配された第１の保護部材と、
    　前記太陽電池の他方側に配されており、樹脂シートからなる第２の保護部材と、
    　前記第１の保護部材と前記第２の保護部材との間に配されており、前記太陽電池を封止している封止材と、
    を備え、
    　前記封止材の前記太陽電池と前記第２の保護部材との間に位置する部分は、架橋性樹脂を含み、
    　前記第２の保護部材と前記封止材との間の一部の領域に配されており、非架橋性樹脂を含む接着層をさらに備える、太陽電池モジュール。     Solar cells,
    A first protective member disposed on one side of the solar cell;
    A second protective member disposed on the other side of the solar cell and made of a resin sheet;
    A sealing material disposed between the first protective member and the second protective member, and sealing the solar cell;
    With
    The portion located between the solar cell and the second protective member of the sealing material includes a crosslinkable resin,
    The solar cell module further provided with the contact bonding layer which is distribute | arranged to the one part area | region between the said 2nd protection member and the said sealing material, and contains non-crosslinkable resin.
  2. 　請求項１に記載の太陽電池モジュールであって、
    　前記接着層と前記第２の保護部材との接着強度が、前記封止材の前記太陽電池と前記第２の保護部材との間に位置する部分と前記第２の保護部材との接着強度よりも高い、太陽電池モジュール。     The solar cell module according to claim 1,
    The adhesive strength between the adhesive layer and the second protective member is based on the adhesive strength between the second protective member and the portion of the sealing material located between the solar cell and the second protective member. Higher solar cell module.
  3. 　請求項１または２に記載の太陽電池モジュールであって、
    　前記接着層が設けられていない領域において、前記封止材と前記第２の保護部材とが直接または間接的に接着されている、太陽電池モジュール。     The solar cell module according to claim 1 or 2,
    The solar cell module in which the sealing material and the second protection member are directly or indirectly bonded in a region where the adhesive layer is not provided.
  4. 　請求項１～３のいずれか一項に記載の太陽電池モジュールであって、
    　前記第２の保護部材と前記封止材との間の領域における、前記接着層の占める面積割合が、４０％～８０％である、太陽電池モジュール。     The solar cell module according to any one of claims 1 to 3,
    The solar cell module, wherein an area ratio of the adhesive layer in a region between the second protective member and the sealing material is 40% to 80%.
  5. 　請求項１～４のいずれか一項に記載の太陽電池モジュールであって、
    　前記封止材の前記太陽電池と前記第２の保護部材との間に位置する部分が、エチレン・酢酸ビニル共重合体を含み、
    　前記接着層が、ポリオレフィンを含む、太陽電池モジュール。     The solar cell module according to any one of claims 1 to 4,
    The portion of the sealing material located between the solar cell and the second protective member includes an ethylene / vinyl acetate copolymer,
    The solar cell module in which the said contact bonding layer contains polyolefin.
  6. 　請求項１～５のいずれか一項に記載の太陽電池モジュールであって、
    　前記接着層が島状に設けられている、太陽電池モジュール。     A solar cell module according to any one of claims 1 to 5,
    A solar cell module, wherein the adhesive layer is provided in an island shape.
PCT/JP2012/057363 2012-03-22 2012-03-22 Solar cell module WO2013140578A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600107594A1 (en) * 2016-10-25 2018-04-25 Agatos Energia Srl Photovoltaic panel having a flexible structure and relative manufacturing method.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4930561U (en) * 1972-06-20 1974-03-16
JP2001036126A (en) * 1999-05-17 2001-02-09 Dainippon Printing Co Ltd Protective sheet for solar cell module and solar cell module using the same
JP2008031208A (en) * 2006-07-26 2008-02-14 Nippon Shokubai Co Ltd Polymer for adhesive and adhesive composition
JP2010109240A (en) * 2008-10-31 2010-05-13 Toppan Printing Co Ltd Solar cell back sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4930561U (en) * 1972-06-20 1974-03-16
JP2001036126A (en) * 1999-05-17 2001-02-09 Dainippon Printing Co Ltd Protective sheet for solar cell module and solar cell module using the same
JP2008031208A (en) * 2006-07-26 2008-02-14 Nippon Shokubai Co Ltd Polymer for adhesive and adhesive composition
JP2010109240A (en) * 2008-10-31 2010-05-13 Toppan Printing Co Ltd Solar cell back sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600107594A1 (en) * 2016-10-25 2018-04-25 Agatos Energia Srl Photovoltaic panel having a flexible structure and relative manufacturing method.
WO2018077849A1 (en) * 2016-10-25 2018-05-03 Agatos Energia S.R.L. Photovoltaic panel having a flexible structure and method of manufacturing.

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