WO2008018461A1 - Improved solar cell module using absorbent - Google Patents

Improved solar cell module using absorbent Download PDF

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Publication number
WO2008018461A1
WO2008018461A1 PCT/JP2007/065448 JP2007065448W WO2008018461A1 WO 2008018461 A1 WO2008018461 A1 WO 2008018461A1 JP 2007065448 W JP2007065448 W JP 2007065448W WO 2008018461 A1 WO2008018461 A1 WO 2008018461A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
function
cell module
absorption function
adsorbent
Prior art date
Application number
PCT/JP2007/065448
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French (fr)
Japanese (ja)
Inventor
Satoru Kuriyagawa
Katsuya Tabuchi
Tomoo Munakata
Original Assignee
Showa Shell Sekiyu K.K.
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Publication date
Application filed by Showa Shell Sekiyu K.K. filed Critical Showa Shell Sekiyu K.K.
Publication of WO2008018461A1 publication Critical patent/WO2008018461A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S30/00—Structural details of PV modules other than those related to light conversion
    • H02S30/10—Frame structures
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass 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
    • H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
    • 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
    • Y02E10/541—CuInSe2 material PV cells
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to an improved solar cell module using an adsorbent for moisture (moisture) and / or gas.
  • a general CIS thin film solar cell module 1D without an adsorbent is made up of a CIS thin film solar cell submodule 3 (shown in Fig. 2) formed on a glass substrate 2A.
  • the device 2 is electrically connected by patterning) and the aluminum frame 5 is attached to the peripheral edge of the structure with the cover glass 4 attached (attached) via the filler 8 via the sealant 6
  • the CIS thin-film solar cell submodule 3 that is the most important part for photovoltaic power generation is sandwiched between the cover glass 4 on the upper surface and the glass substrate 2A on the lower surface, and the glass absorbs gases such as moisture and oxygen.
  • a general crystalline Si solar cell module 1E without an adsorbent is sealed with a filler 8 in which a plurality of crystalline Si cells 22 are electrically connected as shown in FIG.
  • a cover glass 4 is mounted on the back surface, and a back sheet 7 is attached to the back surface, and the peripheral edge of the structure is mounted with an aluminum frame 5 via a seal material 6.
  • the upper surface of 22 is covered with glass.
  • the lower surface passes moisture or other gases compared to glass. Since it is covered with a filler 8 and a back sheet (Tedlar film, etc.) 7 that is easy to generate a reactive gas from itself and more than the CIS-based thin film solar cell module 1A, It is necessary to take measures against deterioration of the reaction gas.
  • a translucent material having a function of holding a filler and a function of protecting the solar cell provided between the surface coating material of the solar cell module and the solar cell.
  • a hygroscopic resin molded body for example, Patent Document 3 containing a hygroscopic material that absorbs moisture that has penetrated into batteries, electronic components, or electronic devices other than solar cells.
  • a hygroscopic material that absorbs moisture that has penetrated into batteries, electronic components, or electronic devices other than solar cells.
  • the resin is preferably a fluorine type or a polyolefin type.
  • the shape of the resin is sheet, pellet, plate, film, or granular (granulated body), and if necessary, a gas adsorbent (inorganic porous material such as silica, alumina, synthetic zeolite) in the resin molded body Can be blended.
  • a gas adsorbent inorganic porous material such as silica, alumina, synthetic zeolite
  • the conventional technology using an adsorbent that absorbs moisture and an adsorbent that absorbs a gas such as oxygen is used for a relatively indoor device such as a battery, an electronic component, or an electronic device. Therefore, it is difficult to divert immediately to a device that is used in a harsh environment such as a solar cell and requires a long service life.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 7-288333
  • Patent Document 2 JP 2001-321631 A
  • Patent Document 3 International Publication No. 01/088041 Pamphlet
  • Patent Document 4 Japanese Patent Laid-Open No. 2001-354780
  • Patent Document 5 Japanese Patent Laid-Open No. 2002-124374
  • Patent Document 6 Japanese Patent Laid-Open No. 2002-270366
  • the present invention solves the above problems, and an object of the present invention is to provide a sealing material by virtue of the structure of a solar cell module in which a solar cell device is formed between two upper and lower glass plates.
  • a simple and low-cost structure or manufacturing method that eliminates the use of water, moisture entering the solar cell module from the outside, moisture absorbed during the assembly process, moisture or gas generated by chemical reactions inside the module, etc. It absorbs, prevents the deterioration of the solar cell module, and improves the service life.
  • the present invention is a structure in which a solar cell submodule in which a plurality of solar cell device (or cell) portions are electrically connected by a conductive pattern is sandwiched between two glass plates. Made solar cell module,
  • the peripheral edge of the inner space formed between the two glass plates has a sealing action, and has any of a moisture absorption function, a water absorption function, and a gas absorption function (oxygen absorption function, oxygen supplement function).
  • This is an improved solar cell module using an adsorbent provided with an adsorbent having a function composed of one or a combination thereof.
  • a cover glass is installed on the upper surface of a solar cell submodule in which a plurality of solar cell device (or cell) portions are electrically connected by a conductive pattern, and the solar cell submodule
  • a solar cell module having a structure in which a back sheet is installed on the back surface via a filler
  • a space formed by the lower surface of the peripheral edge of the cover glass and the upper surface of the filler (or backsheet) has a sealing function adjacent to the submodule, and has a moisture absorption function, a water absorption function, and a gas absorption function. It is a solar cell module using an adsorbent characterized by installing an adsorbent having a function consisting of any one of (oxygen absorption function, oxygen supplement function) or a combination thereof.
  • a plurality of layers formed by laminating an alkali barrier layer (which may be omitted), a metal back electrode layer, a CIS light absorption layer, a buffer layer, and a window layer in this order on a glass substrate.
  • a solar cell module having a structure in which a cover glass is installed on the upper surface of a CIS-based thin-film solar cell sub-module in which the CIS-based thin-film solar cell device portions are electrically connected by a conductive pattern.
  • a plurality of layers formed by laminating an alkali barrier layer (which may be omitted), a metal back electrode layer, a CIS light absorption layer, a buffer layer, and a window layer in this order on a glass substrate.
  • an alkali barrier layer which may be omitted
  • a metal back electrode layer which may be omitted
  • a CIS light absorption layer a buffer layer
  • a window layer in this order on a glass substrate.
  • a solar cell module comprising: A space formed by the lower surface of the peripheral edge of the cover glass and the upper surface of the filler (or backsheet) has a sealing function adjacent to the submodule, and has a moisture absorption function, a water absorption function, and a gas absorption function.
  • An improved solar cell that uses an adsorbent with an adsorbent having a function consisting of any one of (oxygen absorbing function, oxygen supplementing function) or a combination of these functions can be used with Monyu Nore.
  • the present invention uses the structure of a solar cell module in which a solar cell device is formed between two upper and lower glass plates, and eliminates the use of a sealing material at the peripheral edge of the glass plate to absorb moisture and / or Or by installing a gas adsorbent, it absorbs moisture or oxygen or other gas generated in the internal space between the two glass plates through the glass plate peripheral edge opening, and has a sealing effect,
  • a simple and low-cost structure or manufacturing method can prevent the deterioration of the solar cell module and improve the service life.
  • FIG. L (a) A configuration diagram (cross-sectional view) of an improved solar cell module (between a CIS-based thin film solar cell module and two glass plates) using the adsorbent of the present invention. (B) Configuration diagram (plan view) of the solar cell module.
  • FIG. 2 is a configuration diagram (cross-sectional view) of a CIS-based thin film solar cell device portion that is a part of the configuration of an improved solar cell module using the adsorbent of the present invention.
  • FIG. 3 is a configuration diagram (cross-sectional view) of another example of the improved solar cell module using the adsorbent of the present invention (CIS-based thin film solar cell module, back surface filler).
  • FIG. 4 is a schematic configuration diagram (cross-sectional view) of another example (non-CIS solar cell module, between two glass plates) of an improved solar cell module using the adsorbent of the present invention.
  • FIG. 5 is a schematic configuration diagram (cross-sectional view) of another embodiment of the improved solar cell module using the adsorbent of the present invention (non-CIS solar cell module, back surface filler).
  • FIG. 6 is a schematic configuration diagram (sectional view) of a conventional CIS-based thin-film solar cell module that does not use an adsorbent.
  • FIG. 7 is a schematic configuration diagram (sectional view) of a conventional crystalline Si solar cell module that does not use an adsorbent. Explanation of symbols
  • Non-CIS solar cell device (or cell)
  • the solar cell module of the present invention is an improved solar cell module that uses an adsorbent that absorbs moisture, oxygen, or other gas. Simplified with only the adsorption that absorbs moisture entering the solar cell module from the outside, moisture absorbed during the assembly process, moisture generated by chemical reaction inside the module or oxygen and other gases at the glass peripheral edge It uses a structure adsorbent.
  • the basic structure of the improved solar cell module 1 using the adsorbent of the present invention is a plurality of CIS-based thin-film solar cell device portions 2 (see Fig. 2).
  • CIS-based thin film solar cell submodule 3 that is electrically connected to each other is heated and crosslinked with EVA resin film, and the cover glass 4 is pasted on the glass substrate 2 A on the back side.
  • the back sheet 7 is attached via an EVA resin film, and an aluminum frame 5 is attached to the outer periphery of the structure via a sealing material 6.
  • the CIS-based thin film solar cell device portion 2 has a basic structure as shown in FIG. 2, and a glass substrate 2A made of soda-lime glass or the like, and an alkali barrier layer 2B (may be omitted). ), Metal back electrode layer (generally, Mo) 2C, p-type CIS light absorption layer 2D, high-resistance buffer layer 2E, n-type window layer (transparent conductive film) 2F It is a stacked pn heterojunction device with a substrate structure.
  • the light absorption layer 2C is a multi-component compound semiconductor thin film, particularly a HII-VI group chalcopyrite semiconductor, for example, copper indium selenide (CuInSe), copper indium selenide, gallium (CuInGaSe), copper diselenide.
  • a HII-VI group chalcopyrite semiconductor for example, copper indium selenide (CuInSe), copper indium selenide, gallium (CuInGaSe), copper diselenide.
  • p-type semiconductor power such as copper indium selenide and gallium (CuInGaSe) having a thin layer of indium diselenide, copper indium gallium gallium (Cu (InGaXSSe)) as a surface layer is also obtained.
  • the CIS thin film solar cell module 1 has an alkali barrier layer 2B (may be omitted), a metal back electrode layer 2C, a p-type CIS light absorption layer 2D, on a glass substrate 2A.
  • High-resistance buffer layer 2E n-type window layer (transparent conductive film) CIS-based thin-film solar cell sub-module 3 in which multiple CIS-based thin-film solar cell device sections 2 stacked in this order are electrically connected by a conductive pattern 3
  • a crosslinked ethylene bulua is heated to cause a polymerization reaction.
  • Cover glass 4 made of white plate semi-strengthened glass, etc.
  • EVA setate resin film
  • an aluminum frame 5 is attached to the peripheral edge of the glass through a sealing material 6.
  • EVA setate
  • an aluminum frame 5 is attached to the peripheral edge of the glass through a sealing material 6.
  • EVA setate resin film
  • an aluminum frame 5 is attached to the peripheral edge of the glass through a sealing material 6.
  • the sealing action at the peripheral edge of the space formed by the cover glass 4 on the upper surface and the glass substrate 2 A on the lower surface, and also has a moisture absorption function, a water absorption function, and a gas absorption function ( It has a structure in which an adsorbent 9 having a function of any one of oxygen absorption function and oxygen supplement function) or a combination thereof is installed.
  • the force using the sealing material 6 and the adsorbing material 9 have a sealing function, so the sealing material 6 can be omitted.
  • the module may have a structure in which a back sheet 7 is attached to the back surface of the glass substrate via a filler.
  • a cover glass 4 is attached to the upper surface of the CIS-based thin film solar cell submodule 3 formed on the glass substrate 2 A, and a filler 8 is attached to the rear surface of the glass substrate.
  • the sub glass is inserted into the space formed by the lower surface of the cover glass peripheral end and the upper surface of the peripheral end of the filler 8 (or back sheet 7)
  • Adsorbent 9 is installed adjacent to module 3 and has a function of any one or combination of moisture absorption function, water absorption function, gas absorption function (oxygen absorption function, oxygen supplement function). By doing so, the moisture (moisture) and / or gas absorption effect is exhibited.
  • the present invention is not limited to the CIS-based thin-film solar cell module, and even solar cell modules such as crystalline (substrate type, super-straight type), amorphous silicon, and tandem, as shown in FIG.
  • a non-CIS solar cell with a structure in which a non-CIS solar cell submodule 3 in which a plurality of solar cell devices (or cells) are electrically connected by a conductive pattern is sandwiched between two glass plates
  • the battery module 1B can be applied.
  • the battery module 1B has a sealing action at the peripheral end portion of the internal space formed between the two glass plates, and has a moisture absorption function, a water absorption function, Moisture (moisture) ⁇ gas absorption by installing an adsorbent with a function consisting of one or a combination of any one of these gas absorption functions (oxygen absorption function, oxygen supplement function) Achieve the results.
  • the present invention provides a crystal system that is not limited to the CIS-based thin film solar cell module. (Substrate type, super straight type), amorphous silicon and other solar cell modules can be applied. Specifically, as shown in Fig.
  • adsorbing material 9 is bonded in advance to the peripheral edge of glass 4 and cover glass 4 is covered by thermocompression bonding (via EVA resin)
  • adsorbing material 9 is simultaneously glass substrate 2A and cover glass 4 It is melt-fixed in the vicinity of the peripheral edge of the.
  • the adsorbent 9 can be attached by the simple method.

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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)

Abstract

A sealing material is eliminated by using an absorbent, water and gases such as oxygen are absorbed by a simple and low cost structure or manufacturing method, and durability of a solar cell module is improved by preventing deterioration of the solar cell module. An absorbent (9) is arranged at the periphery of upper and lower glass substrates, namely, a cover glass (4) and a glass substrate (2A) whereupon a solar cell sub-module (light generating layer) (3) is formed. Since the absorbent absorbs water or gases such as oxygen and the like that entered from an opening at the glass substrate periphery and/or generated in a space in side the two glass substrates, and that the absorbent has sealing effects, deterioration of the solar cell module is prevented. The type of the solar cell device is applicable to all the devices, including a CIS thin film, that do not use a lower glass and have a filler on the back side surface.

Description

明 細 書  Specification
吸着材を利用した改良型太陽電池モジュール  Improved solar cell module using adsorbent
技術分野  Technical field
[0001] 本発明は、湿気（水分)及び/又はガスの吸着材を利用した改良型太陽電池モジ ユールに関する。  [0001] The present invention relates to an improved solar cell module using an adsorbent for moisture (moisture) and / or gas.
背景技術  Background art
[0002] 環境問題解決の一方法として、クリーンなエネルギーである太陽電池は、有望視さ れているが、太陽電池の劣化による耐用年数の減少という問題があった。太陽電池 の劣化の原因の 1つとして、外部から太陽電池モジュール内に侵入する水分によるも の、モジュール内部で化学反応等により発生する水分又は酸素等の発生ガスによる もの等があり、太陽電池の耐用年数を向上するには、前記水分又は酸素等の発生ガ スにより、太陽電池デバイス又はこれらを電気的に接続する接続導電膜 (導電体)等 が腐蝕又は変質して劣化するのを抑制する必要がある。  [0002] As a method for solving environmental problems, solar cells that are clean energy are considered promising, but there is a problem that the service life is reduced due to deterioration of the solar cells. One of the causes of deterioration of solar cells is due to moisture entering the solar cell module from the outside, or due to moisture generated by chemical reaction etc. inside the module or gas generated such as oxygen. In order to improve the service life, the generation gas such as moisture or oxygen suppresses the deterioration of the solar cell device or the connection conductive film (conductor) that electrically connects them due to corrosion or deterioration. There is a need.
[0003] 吸着材を設置していない一般的な CIS系薄膜太陽電池モジュール 1Dは、図 6に 示すように、ガラス基板 2A上に形成した CIS系薄膜太陽電池サブモジュール 3 (図 2 に図示のデバイス 2をパターユングにより電気的に接続したもの）に充填材 8を介して カバーガラス 4を貼着（装着）した構造体の周端部にシール材 6を介してアルミフレー ム 5を装着した構造であり、光発電に最も重要な部分である前記 CIS系薄膜太陽電 池サブモジュール 3は上面のカバーガラス 4と下面のガラス基板 2Aに挟まれており、 ガラスは湿気、酸素等のガスを通さず、自身から湿気を放出しないという性質を有す るため、 2枚のガラスの周端開放部からの湿気の侵入、ガラスの内部空間の部材から 発生する湿気又は反応ガスに対する劣化対策を行う必要がある。  [0003] As shown in Fig. 6, a general CIS thin film solar cell module 1D without an adsorbent is made up of a CIS thin film solar cell submodule 3 (shown in Fig. 2) formed on a glass substrate 2A. The device 2 is electrically connected by patterning) and the aluminum frame 5 is attached to the peripheral edge of the structure with the cover glass 4 attached (attached) via the filler 8 via the sealant 6 The CIS thin-film solar cell submodule 3 that is the most important part for photovoltaic power generation is sandwiched between the cover glass 4 on the upper surface and the glass substrate 2A on the lower surface, and the glass absorbs gases such as moisture and oxygen. Because it has the property that it does not pass through and does not release moisture from itself, it takes measures against the ingress of moisture from the open ends of the two pieces of glass and the deterioration of moisture or reaction gas generated from members in the inner space of the glass. There is a need.
[0004] 吸着材を設置していない一般的な結晶 Si系太陽電池モジュール 1Eは、図 7に示 すように、複数の結晶 Siセル 22を電気的に接続したものを充填材 8で封止し、この上 にカバーガラス 4を装着し、裏面にバックシート 7を貼着した構造体の周端部をシー ル材 6を介してアルミフレーム 5を装着した構造であり、複数の結晶 Siセル 22の上面 はガラスで覆われている力 下面は、ガラスと比較して、湿気又はその他のガスを通 し易ぐまた自身からも反応ガスが発生し易い充填材 8や、バックシート (テドラーフィ ルム等） 7により被覆されるため、前記 CIS系薄膜太陽電池モジュール 1Aと比較して 、より一層の湿気又は反応ガスに対する劣化対策を行う必要がある。 [0004] A general crystalline Si solar cell module 1E without an adsorbent is sealed with a filler 8 in which a plurality of crystalline Si cells 22 are electrically connected as shown in FIG. In this structure, a cover glass 4 is mounted on the back surface, and a back sheet 7 is attached to the back surface, and the peripheral edge of the structure is mounted with an aluminum frame 5 via a seal material 6. The upper surface of 22 is covered with glass.The lower surface passes moisture or other gases compared to glass. Since it is covered with a filler 8 and a back sheet (Tedlar film, etc.) 7 that is easy to generate a reactive gas from itself and more than the CIS-based thin film solar cell module 1A, It is necessary to take measures against deterioration of the reaction gas.
[0005] また、太陽電池の水分の侵入防止策としては、太陽電池モジュールの表面被覆材 と太陽電池との間に設けられた、充填材の保持機能及び太陽電池の保護機能を有 する透光性の不織布又は織布の水平方向のサイズを小さくして、前記不織布又は織 布の端部を太陽電池モジュールの端部より内側に位置させることにより、不織布又は 織布の端部からの水分の侵入を防止するもの（例えば、特許文献 1参照。）があり、こ れは、太陽電池モジュール内に不織布又は織布を使用するという特殊な構造であり 、一般的な太陽電池モジュールの水分又は酸素等の発生ガスによる劣化対策に適 用できるものではない。 [0005] Further, as a measure for preventing moisture from entering the solar cell, a translucent material having a function of holding a filler and a function of protecting the solar cell provided between the surface coating material of the solar cell module and the solar cell. By reducing the horizontal size of the non-woven fabric or woven fabric and positioning the end of the non-woven fabric or woven fabric inside the end of the solar cell module, moisture from the end of the non-woven fabric or woven fabric can be reduced. There is one that prevents intrusion (for example, see Patent Document 1). This is a special structure in which a non-woven fabric or a woven fabric is used in the solar cell module, and moisture or oxygen of a general solar cell module is used. It is not applicable to measures against deterioration caused by generated gases.
[0006] また、太陽電池以外の電池、電子部品又は電子デバイス等における湿度劣化、例 えば、組立工程中に吸収した水分によるものや、外部環境の相対湿度の変化に応じ てシール材を通過する水分によるもの等、を防止するために、調湿複合材を内蔵さ せるもの（例えば、特許文献 2参照。）があり、その調湿複合材の基本組成は、乾燥剤 (潮解性、腐蝕性のない、アルカリ土類金属の酸化物）又はガス吸収剤（多孔性シリ 力、ゼォライト、モレキュラシーブ等）で、これら微細な粉末状物質を樹脂の表面に固 定化するものである。  [0006] In addition, humidity deterioration in batteries, electronic components or electronic devices other than solar cells, for example, due to moisture absorbed during the assembly process, or passes through the sealing material according to changes in the relative humidity of the external environment. There is a built-in humidity control composite (for example, refer to Patent Document 2) in order to prevent moisture, etc., and the basic composition of the humidity control composite is a desiccant (deliquescent, corrosive). These materials are immobilized on the surface of the resin with an alkaline earth metal oxide) or gas absorbent (porous silica, zeolite, molecular sieve, etc.).
[0007] また、同様に、太陽電池以外の電池、電子部品又は電子デバイス等に侵入した水 分吸収する吸湿材を含んだ吸湿性樹脂成形体 (例えば、特許文献 3)があり、吸湿材 としては、アルカリ土類金属酸化物（CaO、 BaO、 MgO、 SrO)及び硫酸塩の少なく とも 1種が好ましい。樹脂は高分子材料の中でも、フッ素系、ポリオレフイン系等が好 ましい。樹脂の形状はシート状、ペレット状、板状、フィルム状、粒状 (造粒体)であり、 必要に応じて樹脂成形体内にガス吸着材 (シリカ、アルミナ、合成ゼォライト等の無機 多孔質材料)を配合すること力できる。  [0007] Similarly, there is a hygroscopic resin molded body (for example, Patent Document 3) containing a hygroscopic material that absorbs moisture that has penetrated into batteries, electronic components, or electronic devices other than solar cells. Is preferably at least one of alkaline earth metal oxides (CaO, BaO, MgO, SrO) and sulfates. Among the polymer materials, the resin is preferably a fluorine type or a polyolefin type. The shape of the resin is sheet, pellet, plate, film, or granular (granulated body), and if necessary, a gas adsorbent (inorganic porous material such as silica, alumina, synthetic zeolite) in the resin molded body Can be blended.
[0008] また、同様に、太陽電池以外の電池、電子部品又は電子デバイス等に侵入した水 分吸収する吸湿性成形体に貫通孔を設けたもの（例えば、特許文献 4)もある。  [0008] Similarly, there is also one in which a through-hole is provided in a hygroscopic molded body that absorbs moisture that has entered a battery other than a solar battery, an electronic component, an electronic device, or the like (for example, Patent Document 4).
[0009] また、表示装置にお!/、て、その基板と封止キャップとの封止部界面の近傍に水分 又は酸素のうち少なくとも一方を吸収するゲッター剤層を設け、更に、このゲッター剤 層を覆うように封止層を設けたもの（例えば、特許文献 5)もある。水分を吸収するゲッ ター剤として、 CaO、 BaO、 SiO、 CaCl 、アルカリ金属、アルカリ土類金属を、酸素 吸収するゲッター剤として、活性化された金属材料、例えば、 Ca、 Ba、 Ti等を夫々用 いることが開示されている。そして、前記ゲッター剤層中の水分を吸収するゲッター 剤、酸素吸収するゲッター剤をマイクロカプセルに内包したもの（例えば、特許文献 6 )もある。 [0009] In addition, in the display device, there is moisture in the vicinity of the interface of the sealing portion between the substrate and the sealing cap. Alternatively, there is a type in which a getter agent layer that absorbs at least one of oxygen is provided and a sealing layer is provided so as to cover the getter agent layer (for example, Patent Document 5). CaO, BaO, SiO, CaCl, alkali metals, and alkaline earth metals are used as getters that absorb moisture, and activated metal materials such as Ca, Ba, and Ti are used as getters that absorb oxygen. It is disclosed that it is used. In addition, there are also getter agents that absorb moisture in the getter agent layer and getter agents that absorb oxygen in microcapsules (for example, Patent Document 6).
[0010] 前記のように従来の水分を吸収する吸着材、酸素等のガスを吸収する吸着材を用 いた技術は、電池、電子部品又は電子デバイス等の比較的屋内で使用される装置 に利用されるもので、太陽電池のように屋外での過酷な環境で使用され、且つ長期 の耐用年数を要求される装置に、直ちに転用することは難しい。  [0010] As described above, the conventional technology using an adsorbent that absorbs moisture and an adsorbent that absorbs a gas such as oxygen is used for a relatively indoor device such as a battery, an electronic component, or an electronic device. Therefore, it is difficult to divert immediately to a device that is used in a harsh environment such as a solar cell and requires a long service life.
[0011] 特許文献 1 :特開平 7— 288333号公報  Patent Document 1: Japanese Patent Application Laid-Open No. 7-288333
特許文献 2：特開 2001— 321631号公報  Patent Document 2: JP 2001-321631 A
特許文献 3 :国際公開第 01/088041号パンフレット  Patent Document 3: International Publication No. 01/088041 Pamphlet
特許文献 4：特開 2001— 354780号公報  Patent Document 4: Japanese Patent Laid-Open No. 2001-354780
特許文献 5：特開 2002— 124374号公報  Patent Document 5: Japanese Patent Laid-Open No. 2002-124374
特許文献 6：特開 2002— 270366号公報  Patent Document 6: Japanese Patent Laid-Open No. 2002-270366
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0012] 本発明は前記問題点を解消するもので、本発明の目的は、上下 2枚のガラス板間 に太陽電池デバイスが形成される太陽電池モジュールの構造を生力、して、シール材 の使用を省く簡単且つ低コストな構造又は製造方法により、外部から太陽電池モジュ ール内に侵入する水分、組立工程中に吸収した水分、モジュール内部で化学反応 等により発生する水分又はガスその他を吸収し、太陽電池モジュールの劣化を防止 し、耐用年数を向上させることである。  [0012] The present invention solves the above problems, and an object of the present invention is to provide a sealing material by virtue of the structure of a solar cell module in which a solar cell device is formed between two upper and lower glass plates. Using a simple and low-cost structure or manufacturing method that eliminates the use of water, moisture entering the solar cell module from the outside, moisture absorbed during the assembly process, moisture or gas generated by chemical reactions inside the module, etc. It absorbs, prevents the deterioration of the solar cell module, and improves the service life.
課題を解決するための手段  Means for solving the problem
[0013] (1)本発明は、複数の太陽電池デバイス（又はセル)部が導電パターンにより電気的 に接続された太陽電池サブモジュールが 2枚のガラス板間に挟まれて設置された構 造の太陽電池モジュールであって、 (1) The present invention is a structure in which a solar cell submodule in which a plurality of solar cell device (or cell) portions are electrically connected by a conductive pattern is sandwiched between two glass plates. Made solar cell module,
前記 2枚のガラス板に挟まれて形成される内部空間の周端部にシール作用を有し 、且つ吸湿機能、吸水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何れ 力、 1つ又はこれらの組合せからなる機能を有する吸着材を設置した吸着材を利用し た改良型太陽電池モジュールである。  The peripheral edge of the inner space formed between the two glass plates has a sealing action, and has any of a moisture absorption function, a water absorption function, and a gas absorption function (oxygen absorption function, oxygen supplement function). This is an improved solar cell module using an adsorbent provided with an adsorbent having a function composed of one or a combination thereof.
[0014] (2)本発明は、複数の太陽電池デバイス（又はセル)部が導電パターンにより電気的 に接続された太陽電池サブモジュールの上面にカバーガラスを設置し、前記太陽電 池サブモジュールの裏面に充填材を介してバックシートを設置した構造からなる太陽 電池モジユーノレであって、  (2) In the present invention, a cover glass is installed on the upper surface of a solar cell submodule in which a plurality of solar cell device (or cell) portions are electrically connected by a conductive pattern, and the solar cell submodule A solar cell module having a structure in which a back sheet is installed on the back surface via a filler,
前記カバーガラス周端部下面と充填材 (又はバックシート)周端部上面により形成さ れる空間内に前記サブモジュールと隣接してシール作用を有し、且つ吸湿機能、吸 水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何れか 1つ又はこれらの 組合せからなる機能を有する吸着材を設置したことを特徴とする吸着材を利用した太 陽電池モジュールである。  A space formed by the lower surface of the peripheral edge of the cover glass and the upper surface of the filler (or backsheet) has a sealing function adjacent to the submodule, and has a moisture absorption function, a water absorption function, and a gas absorption function. It is a solar cell module using an adsorbent characterized by installing an adsorbent having a function consisting of any one of (oxygen absorption function, oxygen supplement function) or a combination thereof.
[0015] (3)本発明は、ガラス基板上に、アルカリバリア層（省略してもよい。）、金属裏面電極 層、 CIS系光吸収層、バッファ層、窓層の順に積層された複数の CIS系薄膜太陽電 池デバイス部が導電パターンにより電気的に接続された CIS系薄膜太陽電池サブモ ジュールの上面にカバーガラスを設置した構造からなる太陽電池モジュールであつ て、  [0015] (3) In the present invention, a plurality of layers formed by laminating an alkali barrier layer (which may be omitted), a metal back electrode layer, a CIS light absorption layer, a buffer layer, and a window layer in this order on a glass substrate. A solar cell module having a structure in which a cover glass is installed on the upper surface of a CIS-based thin-film solar cell sub-module in which the CIS-based thin-film solar cell device portions are electrically connected by a conductive pattern.
前記上面のカバーガラスと下面のガラス基板とにより挟まれて形成される空間の周 端部にシール作用を有し、且つ吸湿機能、吸水機能、ガス吸収機能（酸素吸収機能 、酸素補足機能）の何れ力、 1つ又はこれらの組合せからなる機能を有する吸着材を 設置した吸着材を利用した改良型太陽電池モジュールである。  It has a sealing action at the periphery of the space formed by the cover glass on the upper surface and the glass substrate on the lower surface, and has a moisture absorption function, a water absorption function, and a gas absorption function (oxygen absorption function, oxygen supplement function). This is an improved solar cell module using an adsorbent with an adsorbent having a function consisting of one or a combination of these.
[0016] (4)本発明は、ガラス基板上に、アルカリバリア層（省略してもよい。）、金属裏面電極 層、 CIS系光吸収層、バッファ層、窓層の順に積層された複数の CIS系薄膜太陽電 池デバイス部が導電パターンにより電気的に接続された CIS系薄膜太陽電池サブモ ジュールの上面にカバーガラスを設置し、前記ガラス基板裏面に充填材を介してバッ クシートを設置した構造からなる太陽電池モジュールであって、 前記カバーガラス周端部下面と充填材 (又はバックシート)周端部上面により形成さ れる空間内に前記サブモジュールと隣接してシール作用を有し、且つ吸湿機能、吸 水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何れか 1つ又はこれらの 組合せからなる機能を有する吸着材を設置した吸着材を利用した改良型太陽電池 モンユーノレでめる。 [0016] (4) In the present invention, a plurality of layers formed by laminating an alkali barrier layer (which may be omitted), a metal back electrode layer, a CIS light absorption layer, a buffer layer, and a window layer in this order on a glass substrate. A structure in which a cover glass is installed on the upper surface of a CIS thin film solar cell sub-module with the CIS thin film solar cell device parts electrically connected by a conductive pattern, and a back sheet is installed on the back of the glass substrate via a filler. A solar cell module comprising: A space formed by the lower surface of the peripheral edge of the cover glass and the upper surface of the filler (or backsheet) has a sealing function adjacent to the submodule, and has a moisture absorption function, a water absorption function, and a gas absorption function. An improved solar cell that uses an adsorbent with an adsorbent having a function consisting of any one of (oxygen absorbing function, oxygen supplementing function) or a combination of these functions can be used with Monyu Nore.
発明の効果  The invention's effect
[0017] 本発明は、上下 2枚のガラス板間に太陽電池デバイスが形成される太陽電池モジ ユールの構造を生力もて、ガラス板周端部に、シール材の使用を省き、吸湿及び/ 又はガス吸着材を設置することにより、ガラス板周端開口部から侵入する湿気又は 2 枚のガラス板間内部空間で発生する水分又は酸素その他のガスを吸収し且つシー ル効果を有することにより、簡単且つ低コストな構造又は製造方法により太陽電池モ ジュールの劣化を防止して、耐用年数を向上することができる。  [0017] The present invention uses the structure of a solar cell module in which a solar cell device is formed between two upper and lower glass plates, and eliminates the use of a sealing material at the peripheral edge of the glass plate to absorb moisture and / or Or by installing a gas adsorbent, it absorbs moisture or oxygen or other gas generated in the internal space between the two glass plates through the glass plate peripheral edge opening, and has a sealing effect, A simple and low-cost structure or manufacturing method can prevent the deterioration of the solar cell module and improve the service life.
図面の簡単な説明  Brief Description of Drawings
[0018] [図 l] (a)本発明の吸着材を利用した改良型太陽電池モジュール (CIS系薄膜太陽 電池モジュール、 2枚ガラス板間）の構成図（断面図）である。 （b)同太陽電池モジュ ールの構成図（平面図）である。  [0018] [Fig. L] (a) A configuration diagram (cross-sectional view) of an improved solar cell module (between a CIS-based thin film solar cell module and two glass plates) using the adsorbent of the present invention. (B) Configuration diagram (plan view) of the solar cell module.
[図 2]本発明の吸着材を利用した改良型太陽電池モジュールの構成の一部である CI S系薄膜太陽電池デバイス部の構成図（断面図）である。  FIG. 2 is a configuration diagram (cross-sectional view) of a CIS-based thin film solar cell device portion that is a part of the configuration of an improved solar cell module using the adsorbent of the present invention.
[図 3]本発明の吸着材を利用した改良型太陽電池モジュールの他の実施例（CIS系 薄膜太陽電池モジュール、裏面充填材)の構成図（断面図）である。  FIG. 3 is a configuration diagram (cross-sectional view) of another example of the improved solar cell module using the adsorbent of the present invention (CIS-based thin film solar cell module, back surface filler).
[図 4]本発明の吸着材を利用した改良型太陽電池モジュール他の実施例（非 CIS系 太陽電池モジュール、 2枚ガラス板間）の概略構成図（断面図）である。  FIG. 4 is a schematic configuration diagram (cross-sectional view) of another example (non-CIS solar cell module, between two glass plates) of an improved solar cell module using the adsorbent of the present invention.
[図 5]本発明の吸着材を利用した改良型太陽電池モジュール他の実施例（非 CIS系 太陽電池モジュール、裏面充填材)の概略構成図（断面図）である。  FIG. 5 is a schematic configuration diagram (cross-sectional view) of another embodiment of the improved solar cell module using the adsorbent of the present invention (non-CIS solar cell module, back surface filler).
[図 6]従来の吸着材を利用しない CIS系薄膜太陽電池モジュールの概略構成図（断 面図）である。  FIG. 6 is a schematic configuration diagram (sectional view) of a conventional CIS-based thin-film solar cell module that does not use an adsorbent.
[図 7]従来の吸着材を利用しない結晶 Si系太陽電池モジュールの概略構成図（断面 図）である。 符号の説明 FIG. 7 is a schematic configuration diagram (sectional view) of a conventional crystalline Si solar cell module that does not use an adsorbent. Explanation of symbols
[0019] 1 本発明の CIS系薄膜太陽電池モジュール  [0019] 1 CIS thin film solar cell module of the present invention
1A 本発明の CIS系薄膜太陽電池モジュール (他の実施例）  1A CIS-based thin film solar cell module of the present invention (another embodiment)
1B 本発明の非 CIS系薄膜太陽電池モジュール (他の実施例）  1B Non-CIS thin film solar cell module of the present invention (another embodiment)
1C 本発明の非 CIS系薄膜太陽電池モジュール (他の実施例）  1C Non-CIS thin film solar cell module of the present invention (another embodiment)
1D 従来の CIS系薄膜太陽電池モジュール  1D Conventional CIS thin film solar cell module
1E 従来の結晶 Si系太陽電池モジュール  1E Conventional crystalline Si solar cell module
2 CIS系薄膜太陽電池デバイス部  2 CIS thin film solar cell device section
21 非 CIS系の太陽電池デバイス（又はセル）  21 Non-CIS solar cell device (or cell)
22 結晶 Siセル  22 Crystalline Si cell
2A ガラス基板  2A glass substrate
2A， ガラス板  2A, glass plate
2B アルカリバリア層  2B Alkaline barrier layer
2C 金属裏面電極層  2C Metal back electrode layer
2D p形 CIS系光吸収層  2D p-type CIS light absorption layer
2E 高抵抗バッファ層  2E high resistance buffer layer
2F n形窓層（透明導電膜）  2F n-type window layer (transparent conductive film)
3 CIS系薄膜太陽電池サブモジュール  3 CIS-based thin film solar cell submodule
4 カバーガラス  4 Cover glass
5 ァノレミフレーム  5 Anoremi frame
6 シール材  6 Sealing material
7 バックシート  7 Back seat
8 充填材  8 Filler
9 吸着材  9 Adsorbent
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0020] 以下、本発明の実施の形態について説明する。 Hereinafter, embodiments of the present invention will be described.
本発明の太陽電池モジュールは、水分又は酸素その他のガスを吸収する吸着材を 利用した改良型太陽電池モジュールであり、更に、詳細には、モジュールの上下 2枚 のガラス周端部に、外部から太陽電池モジュール内に侵入する水分、組立工程中に 吸収した水分、モジュール内部で化学反応等により発生する水分又は酸素その他の ガスを吸収する吸着のみを設置した簡略構造の吸着材を利用したものである。 The solar cell module of the present invention is an improved solar cell module that uses an adsorbent that absorbs moisture, oxygen, or other gas. Simplified with only the adsorption that absorbs moisture entering the solar cell module from the outside, moisture absorbed during the assembly process, moisture generated by chemical reaction inside the module or oxygen and other gases at the glass peripheral edge It uses a structure adsorbent.
[0021] 本発明の吸着材を利用した改良型太陽電池モジュール 1の基本構成は、図 1に示 すように、パターンユングにより複数個の CIS系薄膜太陽電池デバイス部 2 (図 2参照 。 )を電気的に接続した CIS系薄膜太陽電池サブモジュール 3を接着剤である加熱、 架橋した EVA樹脂フィルムを介してカバーカラス 4を貼着し、裏面側は、ガラス基板 2 Aに、加熱、架橋した EVA樹脂フィルムを介してバックシート 7を貼着した構造であり 、この構造体の外周囲にシール材 6を介してアルミフレーム 5を取り付けたものである[0021] As shown in Fig. 1, the basic structure of the improved solar cell module 1 using the adsorbent of the present invention is a plurality of CIS-based thin-film solar cell device portions 2 (see Fig. 2). CIS-based thin film solar cell submodule 3 that is electrically connected to each other is heated and crosslinked with EVA resin film, and the cover glass 4 is pasted on the glass substrate 2 A on the back side. The back sheet 7 is attached via an EVA resin film, and an aluminum frame 5 is attached to the outer periphery of the structure via a sealing material 6.
〇 Yes
[0022] 前記 CIS系薄膜太陽電池デバイス部 2は、図 2に示すような基本構造であり、青板 ガラス等からなるガラス基板 2A、その上に、アルカリバリア層 2B (省略してもよい。）、 金属裏面電極層（一般的には、 Mo) 2C、 p形 CIS系光吸収層 2D、高抵抗バッファ層 2E、 n形窓層（透明導電膜) 2Fの順で高品質薄膜層が順次積層されたサブストレー ト構造の pnヘテロ接合デバイスである。前記光吸収層 2Cは、多元化合物半導体薄 膜、特に、 HII-VI族カルコパイライト半導体、例えば、 2セレン化銅インジウム (CuInS e )、 2セレン化銅インジウム.ガリウム (CuInGaSe )、 2セレン化銅ガリウム (CuGaSe )、 2 セレン'ィォゥ化銅インジウム.ガリウム (Cu(InGaXSSe) )、 2ィォゥ化銅インジウム (Culn S )、 2ィォゥ化銅ガリウム (CuGaS )、 2ィォゥ化銅インジウム 'ガリウム (CuInGaS )、薄膜 の 2セレン.ィォゥ化銅インジウム.ガリウム (Cu(InGaXSSe) )を表面層として有する 2セ レン化銅インジウム 'ガリウム (CuInGaSe )のような p形半導体力もなる。  [0022] The CIS-based thin film solar cell device portion 2 has a basic structure as shown in FIG. 2, and a glass substrate 2A made of soda-lime glass or the like, and an alkali barrier layer 2B (may be omitted). ), Metal back electrode layer (generally, Mo) 2C, p-type CIS light absorption layer 2D, high-resistance buffer layer 2E, n-type window layer (transparent conductive film) 2F It is a stacked pn heterojunction device with a substrate structure. The light absorption layer 2C is a multi-component compound semiconductor thin film, particularly a HII-VI group chalcopyrite semiconductor, for example, copper indium selenide (CuInSe), copper indium selenide, gallium (CuInGaSe), copper diselenide. Gallium (CuGaSe), indium selenium diiodide, gallium (Cu (InGaXSSe)), indium diiodide (Culn S), copper gallium diiodide (CuGaS), indium diiodide 'gallium (CuInGaS) In addition, p-type semiconductor power such as copper indium selenide and gallium (CuInGaSe) having a thin layer of indium diselenide, copper indium gallium gallium (Cu (InGaXSSe)) as a surface layer is also obtained.
[0023] 以下に本発明の吸着材を利用した改良型太陽電池モジュールとして、 CIS系薄膜 太陽電池モジュールの場合につ!/、て説明する。  [0023] Hereinafter, as an improved solar cell module using the adsorbent of the present invention, a CIS thin film solar cell module will be described.
CIS系薄膜太陽電池モジュール 1は、図 1に示すように、ガラス基板 2A上に、アル カリバリア層 2B (省略してもよい。）、金属裏面電極層 2C、 p形 CIS系光吸収層 2D、 高抵抗バッファ層 2E、 n形窓層（透明導電膜） 2Fの順に積層された複数の CIS系薄 膜太陽電池デバイス部 2が導電パターンにより電気的に接続された CIS系薄膜太陽 電池サブモジュール 3に、加熱して重合反応を起こさせて架橋したエチレンビュルァ セテート（以下、 EVAという。）樹脂フィルム（又はシート）を接着剤として、白板半強 化ガラス等からなるカバーガラス 4を設置し、その周端部にシール材 6を介してアルミ フレーム 5を取り付けた構造であり、前記上面のカバーガラス 4と下面のガラス基板 2 Aとにより挟まれて形成される空間の周端部にシール作用を有し、且つ吸湿機能、吸 水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何れか 1つ又はこれらの 組合せからなる機能を有する吸着材 9を設置した構造である。図 1では、シール材 6 を使用している力、吸着材 9はシール機能を有するため、シール材 6を省略すること ができる。 As shown in FIG. 1, the CIS thin film solar cell module 1 has an alkali barrier layer 2B (may be omitted), a metal back electrode layer 2C, a p-type CIS light absorption layer 2D, on a glass substrate 2A. High-resistance buffer layer 2E, n-type window layer (transparent conductive film) CIS-based thin-film solar cell sub-module 3 in which multiple CIS-based thin-film solar cell device sections 2 stacked in this order are electrically connected by a conductive pattern 3 In addition, a crosslinked ethylene bulua is heated to cause a polymerization reaction. Cover glass 4 made of white plate semi-strengthened glass, etc. is installed using a setate (hereinafter referred to as EVA) resin film (or sheet) as an adhesive, and an aluminum frame 5 is attached to the peripheral edge of the glass through a sealing material 6. And has a sealing action at the peripheral edge of the space formed by the cover glass 4 on the upper surface and the glass substrate 2 A on the lower surface, and also has a moisture absorption function, a water absorption function, and a gas absorption function ( It has a structure in which an adsorbent 9 having a function of any one of oxygen absorption function and oxygen supplement function) or a combination thereof is installed. In FIG. 1, the force using the sealing material 6 and the adsorbing material 9 have a sealing function, so the sealing material 6 can be omitted.
また、前記モジュールは、前記ガラス基板裏面に充填材を介してバックシート 7を貼 着した構造のものでもよい。  The module may have a structure in which a back sheet 7 is attached to the back surface of the glass substrate via a filler.
[0024] また、図 3に示すように、ガラス基板 2A上に形成された CIS系薄膜太陽電池サブモ ジュール 3上面にカバーガラス 4を貼着し、前記ガラス基板裏面に充填材 8を介して ノ ックシート 7を貼着した構造の CIS系薄膜太陽電池モジュール 1Aの場合は、前記 カバーガラス周端部下面と充填材 8 (又はバックシート 7)の周端部上面により形成さ れる空間内に前記サブモジュール 3と隣接してシール作用を有し、且つ吸湿機能、 吸水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何れか 1つ又はこれら の組合せからなる機能を有する吸着材 9を設置することにより、湿気（水分)及び/又 はガス吸収効果を奏する。  Further, as shown in FIG. 3, a cover glass 4 is attached to the upper surface of the CIS-based thin film solar cell submodule 3 formed on the glass substrate 2 A, and a filler 8 is attached to the rear surface of the glass substrate. In the case of the CIS-based thin film solar cell module 1A having the structure in which the cover sheet 7 is adhered, the sub glass is inserted into the space formed by the lower surface of the cover glass peripheral end and the upper surface of the peripheral end of the filler 8 (or back sheet 7) Adsorbent 9 is installed adjacent to module 3 and has a function of any one or combination of moisture absorption function, water absorption function, gas absorption function (oxygen absorption function, oxygen supplement function). By doing so, the moisture (moisture) and / or gas absorption effect is exhibited.
[0025] 本発明は、前記 CIS系薄膜太陽電池モジュールに限定することなぐ結晶系（サブ ストレートタイプ、スーパーストレイトタイプ）、アモルファスシリコン、タンデム等の太陽 電池モジュールであっても、図 4に示すような、複数の太陽電池デバイス（又はセル） 部が導電パターンにより電気的に接続された非 CIS系太陽電池サブモジュール 3が 、 2枚のガラス板間に挟まれて設置された構造の非 CIS系太陽電池モジュール 1Bで あれば、適応できるものであり、その場合は、前記 2枚のガラス板に挟まれて形成され る内部空間の周端部にシール作用を有し、且つ吸湿機能、吸水機能、ガス吸収機能 (酸素吸収機能、酸素補足機能）の何れか 1つ又はこれらの組合せからなる機能を有 する吸着材を設置することにより、湿気（水分） ·ガス吸収効果を奏する。  [0025] The present invention is not limited to the CIS-based thin-film solar cell module, and even solar cell modules such as crystalline (substrate type, super-straight type), amorphous silicon, and tandem, as shown in FIG. A non-CIS solar cell with a structure in which a non-CIS solar cell submodule 3 in which a plurality of solar cell devices (or cells) are electrically connected by a conductive pattern is sandwiched between two glass plates The battery module 1B can be applied. In this case, the battery module 1B has a sealing action at the peripheral end portion of the internal space formed between the two glass plates, and has a moisture absorption function, a water absorption function, Moisture (moisture) · gas absorption by installing an adsorbent with a function consisting of one or a combination of any one of these gas absorption functions (oxygen absorption function, oxygen supplement function) Achieve the results.
[0026] 更に、本発明は、前記 CIS系薄膜太陽電池モジュールに限定することなぐ結晶系 (サブストレートタイプ、スーパーストレイトタイプ）、アモルファスシリコン等の太陽電池 モジュールに適応できるものであり、具体的には、図 5に示すように、複数の非 CIS系 の太陽電池デバイス（又はセル） 21が導電パターンにより電気的に接続された太陽 電池サブモジュールの上面に白板半強化ガラス等からなるカバーガラス 4を設置し、 前記太陽電池サブモジュールの裏面に充填材 8を介してバックシート 7を設置した構 造からなる太陽電池モジュール 1Cにおいて、前記カバーガラス 4の周端部下面と充 填材 8 (又はバックシート 7)周端部上面により形成される空間内に前記サブモジユー ルと隣接してシール作用を有し、且つ吸湿機能、吸水機能、ガス吸収機能（酸素吸 収機能、酸素補足機能）の何れ力、 1つ又はこれらの組合せからなる機能を有する吸 着材を設置することにより、装着湿気 (水分） ·ガス吸収効果を奏する。 [0026] Further, the present invention provides a crystal system that is not limited to the CIS-based thin film solar cell module. (Substrate type, super straight type), amorphous silicon and other solar cell modules can be applied. Specifically, as shown in Fig. 5, multiple non-CIS solar cell devices (or cells) 21 Cover glass 4 made of white plate semi-tempered glass or the like was installed on the upper surface of the solar cell submodule electrically connected by the conductive pattern, and back sheet 7 was installed on the back surface of the solar cell submodule via filler 8 In the solar cell module 1C having a structure, a sealing action is performed adjacent to the submodule in a space formed by the lower surface of the peripheral end portion of the cover glass 4 and the upper surface of the peripheral end portion of the filler 8 (or the back sheet 7). And has one of a moisture absorption function, a water absorption function, and a gas absorption function (oxygen absorption function, oxygen supplement function), one or a combination thereof. By installing a suction Chakuzai having made function, provides the mounting moisture (water) and gas absorbing effect.
そして、本発明の吸着材 9を使用することにより、 CIS系薄膜太陽電池モジュール の製造工程においても、以下のように、製造工程の簡略化及びコスト削減の効果が 得られる。  Further, by using the adsorbent 9 of the present invention, effects of simplification of the manufacturing process and cost reduction can be obtained in the manufacturing process of the CIS-based thin film solar cell module as follows.
カバーガラス 4を被覆する工程、即ち、ガラス基板 2A上に CIS系薄膜太陽電池サ ブモジュール 3が形成された構造体にカバーガラス 4を被覆する工程、その前に、前 記ガラス基板 2A又はカバーガラス 4の周端部に前記吸着材 9を予め接着しておき、 ( EVA樹脂を介して)加熱圧着によりカバーガラス 4を被覆する際に、同時に前記吸着 材 9もガラス基板 2Aとカバーガラス 4の周端部近傍で溶融固着される。前記簡単な 方法により、吸着材 9を装着することができる。  The process of coating the cover glass 4, that is, the process of coating the cover glass 4 on the structure in which the CIS-based thin-film solar cell submodule 3 is formed on the glass substrate 2A, before that, the glass substrate 2A or the cover When adsorbing material 9 is bonded in advance to the peripheral edge of glass 4 and cover glass 4 is covered by thermocompression bonding (via EVA resin), adsorbing material 9 is simultaneously glass substrate 2A and cover glass 4 It is melt-fixed in the vicinity of the peripheral edge of the. The adsorbent 9 can be attached by the simple method.

Claims

請求の範囲 The scope of the claims
[1] 複数の太陽電池デバイス（又はセル)部が導電パターンにより電気的に接続された 太陽電池サブモジュールが 2枚のガラス板間に挟まれて設置された構造の太陽電池 モンユーノレであって、  [1] A solar cell with a structure in which a plurality of solar cell devices (or cells) are electrically connected by a conductive pattern and sandwiched between two glass plates.
前記 2枚のガラス板に挟まれて形成される内部空間の周端部に、シール作用を有 し、且つ吸湿機能、吸水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何 れカ、 1つ又はこれらの組合せからなる機能を有する吸着材を設置したことを特徴とす る吸着材を利用した太陽電池モジュール。  The peripheral edge of the internal space formed between the two glass plates has a sealing function, and any of a moisture absorption function, a water absorption function, and a gas absorption function (oxygen absorption function, oxygen supplement function). A solar cell module using an adsorbent characterized by installing an adsorbent having a function consisting of one or a combination thereof.
[2] 複数の太陽電池デバイス（又はセル)部が導電パターンにより電気的に接続された 太陽電池サブモジュールの上面にカバーガラスを設置し、前記太陽電池サブモジュ ールの裏面に充填材を介してバックシートを設置した構造からなる太陽電池モジユー ノレであって、  [2] A cover glass is installed on the upper surface of the solar cell submodule in which a plurality of solar cell devices (or cells) are electrically connected by a conductive pattern, and a filler is provided on the back surface of the solar cell submodule. A solar cell module having a structure with a back seat installed,
前記カバーガラス周端部下面と充填材 (又はバックシート)周端部上面により形成さ れる空間内に前記サブモジュールと隣接して、シール作用を有し、且つ吸湿機能、 吸水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何れか 1つ又はこれら の組合せからなる機能を有する吸着材を設置したことを特徴とする吸着材を利用した 太陽電池モジュール。  Adjacent to the sub-module in a space formed by the lower surface of the peripheral edge of the cover glass and the upper surface of the filler (or backsheet), has a sealing function, and has a moisture absorption function, a water absorption function, and a gas absorption function. A solar cell module using an adsorbent, characterized in that an adsorbent having a function composed of any one of (oxygen absorption function, oxygen supplement function) or a combination thereof is installed.
[3] ガラス基板上に、アルカリバリア層（省略してもよい。）、金属裏面電極層、 CIS系光 吸収層、バッファ層、窓層の順に積層された複数の CIS系薄膜太陽電池デバイス部 が導電パターンにより電気的に接続された CIS系薄膜太陽電池サブモジュールの上 面にカバーガラスを設置した構造からなる太陽電池モジュールであって、  [3] Multiple CIS-based thin-film solar cell device parts laminated in the order of an alkali barrier layer (which may be omitted), a metal back electrode layer, a CIS light-absorbing layer, a buffer layer, and a window layer on a glass substrate Is a solar cell module having a structure in which a cover glass is installed on the upper surface of a CIS-based thin film solar cell submodule electrically connected by a conductive pattern,
前記上面のカバーガラスと下面のガラス基板とにより挟まれて形成される空間の周 端部に、シール作用を有し、且つ吸湿機能、吸水機能、ガス吸収機能（酸素吸収機 能、酸素補足機能）の何れ力、 1つ又はこれらの組合せからなる機能を有する吸着材 を設置したことを特徴とする吸着材を利用した太陽電池モジュール。  The periphery of the space formed between the upper cover glass and the lower glass substrate has a sealing function, and has a moisture absorption function, a water absorption function, and a gas absorption function (oxygen absorption function, oxygen supplement function). A solar cell module using an adsorbent, characterized in that an adsorbent having a function composed of one or a combination thereof is installed.
[4] ガラス基板上に、アルカリバリア層（省略してもよい。）、金属裏面電極層、 CIS系光 吸収層、バッファ層、窓層の順に積層された複数の CIS系薄膜太陽電池デバイス部 が導電パターンにより電気的に接続された CIS系薄膜太陽電池サブモジュールの上 面にカバーガラスを設置し、前記ガラス基板裏面に充填材を介してバックシートを設 置した構造からなる太陽電池モジュールであって、 [4] Multiple CIS-based thin-film solar cell device sections laminated in the order of an alkali barrier layer (may be omitted), a metal back electrode layer, a CIS light-absorbing layer, a buffer layer, and a window layer on a glass substrate On top of the CIS-based thin film solar cell submodule with A solar cell module having a structure in which a cover glass is installed on a surface, and a back sheet is installed on the back surface of the glass substrate via a filler.
前記カバーガラス周端部下面と充填材 (又はバックシート)周端部上面により形成さ れる空間内に前記サブモジュールと隣接して、シール作用を有し、且つ吸湿機能、 吸水機能、ガス吸収機能（酸素吸収機能、酸素補足機能）の何れか 1つ又はこれら の組合せからなる機能を有する吸着材を設置したことを特徴とする吸着材を利用した 太陽電池モジュール。  Adjacent to the sub-module in a space formed by the lower surface of the peripheral edge of the cover glass and the upper surface of the filler (or backsheet), has a sealing function, and has a moisture absorption function, a water absorption function, and a gas absorption function. A solar cell module using an adsorbent, characterized in that an adsorbent having a function composed of any one of (oxygen absorption function, oxygen supplement function) or a combination thereof is installed.
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