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JP2010135655A - Solar cell module - Google Patents

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Publication number
JP2010135655A
JP2010135655A JP2008311679A JP2008311679A JP2010135655A JP 2010135655 A JP2010135655 A JP 2010135655A JP 2008311679 A JP2008311679 A JP 2008311679A JP 2008311679 A JP2008311679 A JP 2008311679A JP 2010135655 A JP2010135655 A JP 2010135655A
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Japan
Prior art keywords
cell module
sheet
back surface
medium layer
vinyl acetate
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JP2008311679A
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Japanese (ja)
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Yukihiko Shibata
幸彦 柴田
Kumiko Oda
久美子 小田
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Daiwa Gravure Co Ltd
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Daiwa Gravure Co Ltd
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Priority to JP2008311679A priority Critical patent/JP2010135655A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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Abstract

【課題】太陽電池モジュールの内側に位置する封止シートと裏面保護シートとを完全接合させるようにする。
【解決手段】セルモジュール2と、セルモジュール2を覆うエチレン酢酸ビニル共重合体樹脂(架橋EVA樹脂)からなる封止シート3,4と、内側に位置する封止シート4に積層されて接合される裏面保護シート5を備えた太陽電池モジュール1において、裏面保護シート5の封止シート4に対向する面に、エチレン酢酸ビニル共重合体樹脂(EVA樹脂)からなる接合媒体層7を接着層8を介して積層接合させて裏面保護シート体9を構成し、裏面保護シート体9側に設けた接合媒体層7と封止シート4とを重ねて前記接合媒体層7と封止シート4を加熱溶融接合させてなる。
【選択図】図1
A sealing sheet positioned on the inner side of a solar cell module and a back surface protection sheet are completely bonded.
SOLUTION: The cell module 2, the sealing sheets 3 and 4 made of an ethylene vinyl acetate copolymer resin (crosslinked EVA resin) covering the cell module 2, and the sealing sheet 4 positioned inside are laminated and bonded. In the solar cell module 1 provided with the back surface protection sheet 5, a bonding medium layer 7 made of ethylene vinyl acetate copolymer resin (EVA resin) is attached to the surface of the back surface protection sheet 5 facing the sealing sheet 4. The back surface protective sheet body 9 is configured by laminating and bonding, and the bonding medium layer 7 and the sealing sheet 4 provided on the back surface protective sheet body 9 side are stacked to heat the bonding medium layer 7 and the sealing sheet 4. It is melt-bonded.
[Selection] Figure 1

Description

本発明は、太陽電池モジュールに関するものである。   The present invention relates to a solar cell module.

従来の裏面を保護する裏面保護シートを備えた太陽電池モジュールとしては例えば特許文献1に開示されているように、太陽電池モジュールの封止樹脂シート(EVAシート)に裏面保護シートを重ね、真空ラミネーターにより封止したものが知られている。この特許文献1には裏面保護シートの封止樹脂側基材層の樹脂としてポリエチレンテレフタレート(PET)が使用されている。
特開2006−310680号公報
As a conventional solar cell module provided with a back surface protection sheet for protecting the back surface, for example, as disclosed in Patent Document 1, a back surface protection sheet is stacked on a sealing resin sheet (EVA sheet) of a solar cell module, and a vacuum laminator What is sealed by this is known. In this Patent Document 1, polyethylene terephthalate (PET) is used as the resin for the sealing resin side base material layer of the back protective sheet.
JP 2006-310680 A

上記特許文献1に開示されている従来の太陽電池モジュールでは太陽電池モジュールの封止樹脂シート(EVAシート)に裏面保護シートを重ね、真空ラミネーターにより封止しており、このラミネート時に封止樹脂シートと裏面保護シートの封止樹脂側基材層の間に両方に相性の良い樹脂を介在させるなどしなければ封止樹脂シートと裏面保護シートの封止樹脂側基材層を完全接合させることは困難であるという問題がある。   In the conventional solar cell module disclosed in Patent Document 1, a back surface protective sheet is stacked on a sealing resin sheet (EVA sheet) of the solar cell module and sealed with a vacuum laminator. It is possible to completely join the sealing resin sheet and the sealing resin side base material layer of the back surface protection sheet unless a compatible resin is interposed between the sealing resin side base material layer of the back surface protection sheet and the like. There is a problem that it is difficult.

本発明の目的は、このような課題を解決するものであり、太陽電池モジュールの内側に位置する封止シートと裏面保護シートとを完全接合させるようにするものである。   The object of the present invention is to solve such a problem and to completely bond a sealing sheet and a back surface protection sheet located inside a solar cell module.

本発明の請求項1に記載の太陽電池モジュールは、セルモジュールと、セルモジュールを覆うエチレン酢酸ビニル共重合体樹脂(架橋EVA樹脂)からなる封止シートと、内側に位置する封止シートに積層されて接合される裏面保護シートを備えた太陽電池モジュールにおいて、裏面保護シートの封止シートに対向する面に、エチレン酢酸ビニル共重合体樹脂(EVA樹脂)からなる接合媒体層を接着層を介して積層接合させて裏面保護シート体を構成し、裏面保護シート体側に設けた接合媒体層と封止シートとを重ね、接合媒体層と封止シートを加熱溶融接合させてなることを特徴とする。   The solar cell module according to claim 1 of the present invention is laminated on a cell module, a sealing sheet made of an ethylene vinyl acetate copolymer resin (crosslinked EVA resin) covering the cell module, and a sealing sheet located inside. In the solar cell module provided with the back surface protection sheet to be bonded, a bonding medium layer made of an ethylene vinyl acetate copolymer resin (EVA resin) is provided on the surface of the back surface protection sheet facing the sealing sheet via an adhesive layer. The back surface protection sheet body is configured by laminating and bonding, the bonding medium layer provided on the back surface protection sheet body side and the sealing sheet are stacked, and the bonding medium layer and the sealing sheet are heated and melt bonded. .

請求項2に記載の太陽電池モジュールは、接合媒体層のエチレン酢酸ビニル共重合体樹脂の酢酸ビニルの含有量を25%以下としたことを特徴とする。
請求項3に記載の太陽電池モジュールは、接合媒体層のエチレン酢酸ビニル共重合体樹脂にエラストマー樹脂を添加したことを特徴とする。
The solar cell module according to claim 2 is characterized in that the content of vinyl acetate in the ethylene vinyl acetate copolymer resin of the bonding medium layer is 25% or less.
The solar cell module according to claim 3 is characterized in that an elastomer resin is added to the ethylene vinyl acetate copolymer resin of the bonding medium layer.

以上のように、本発明の太陽電池モジュールは、裏面保護シート体の封止シートに対向する面に、封止シートの材料であるエチレン酢酸ビニル共重合体樹脂(架橋EVA樹脂)と相性の良いエチレン酢酸ビニル共重合体樹脂(EVA樹脂)からなる接合媒体層を接着層を介して積層接合させてあるので、接合媒体層と封止シートとを重ねて加熱溶融接合することにより、強力な接合部が得られ、裏面保護シート体に封止シートを完全接合させることができる。また、接合媒体層のエチレン酢酸ビニル共重合体樹脂の酢酸ビニルの含有量を25%以下とすることにより、接合媒体層の耐熱性を保持させることができる。さらに、接合媒体層のエチレン酢酸ビニル共重合体樹脂にエラストマー樹脂を添加したことにより、接合媒体層のエチレン酢酸ビニル共重合体樹脂の酢酸ビニルの含有量が少なくても、低温でも真空加熱・加圧法により封止シートと接合媒体層とが接合しやすくなる。   As described above, the solar cell module of the present invention has good compatibility with the ethylene vinyl acetate copolymer resin (crosslinked EVA resin) that is the material of the sealing sheet on the surface of the back surface protection sheet body that faces the sealing sheet. Since the bonding medium layer made of ethylene vinyl acetate copolymer resin (EVA resin) is laminated and bonded through the adhesive layer, the bonding medium layer and the sealing sheet are overlapped and heated and melt bonded to achieve strong bonding. Part is obtained, and the sealing sheet can be completely joined to the back surface protective sheet body. Moreover, the heat resistance of a joining medium layer can be hold | maintained by making content of vinyl acetate of the ethylene vinyl acetate copolymer resin of a joining medium layer into 25% or less. Furthermore, by adding an elastomer resin to the ethylene vinyl acetate copolymer resin of the bonding medium layer, vacuum heating / heating can be performed even at low temperatures even if the vinyl acetate content of the ethylene vinyl acetate copolymer resin of the bonding medium layer is small. The sealing sheet and the joining medium layer are easily joined by the pressure method.

以下、本発明の一実施の形態を、図1を用いて具体的に説明する。
図において、1はセルモジュール2と、このセルモジュール2をサンドイッチ状に包んで覆うエチレン酢酸ビニル共重合体樹脂(架橋EVA樹脂)からなる封止シート3,4とで構成される太陽電池モジュールで、この太陽電池モジュール1には内側に位置する封止シート4に重なるように裏面保護シート5が積層されて接合される。そして、外側に位置する封止シート3には太陽電池モジュール1を外側から保護する強化ガラス板6が積層されて接合される。
Hereinafter, an embodiment of the present invention will be specifically described with reference to FIG.
In the figure, 1 is a solar cell module composed of a cell module 2 and sealing sheets 3 and 4 made of an ethylene vinyl acetate copolymer resin (crosslinked EVA resin) covering and covering the cell module 2 in a sandwich shape. The back surface protective sheet 5 is laminated and bonded to the solar cell module 1 so as to overlap the sealing sheet 4 positioned inside. And the tempered glass board 6 which protects the solar cell module 1 from the outer side is laminated | stacked and joined to the sealing sheet 3 located outside.

封止シート4に対する裏面保護シート5の接合力を高めるために裏面保護シート5には封止シート4に対向する面に、封止シート4の材料である架橋EVA樹脂と相性の良いエチレン酢酸ビニル共重合体樹脂(EVA樹脂)からなる接合媒体層7を接着層8を介して積層接合させて裏面保護シート体9を構成している。   In order to increase the bonding force of the back surface protective sheet 5 to the sealing sheet 4, the back surface protective sheet 5 has an ethylene vinyl acetate that is compatible with the cross-linked EVA resin that is the material of the sealing sheet 4 on the surface facing the sealing sheet 4. A back surface protective sheet body 9 is configured by laminating and bonding a bonding medium layer 7 made of a copolymer resin (EVA resin) via an adhesive layer 8.

このように裏面保護シート体9側に設けた接合媒体層7と封止シート4とを重ねて接合媒体層7の架橋EVA樹脂と封止シート4のEVA樹脂を真空加熱・加圧法により加熱溶融接合させることにより、強力な接合部が得られ、裏面保護シート体9と封止シート4を完全接合させることができる。   In this way, the bonding medium layer 7 and the sealing sheet 4 provided on the back surface protective sheet body 9 are overlapped, and the crosslinked EVA resin of the bonding medium layer 7 and the EVA resin of the sealing sheet 4 are heated and melted by a vacuum heating / pressurizing method. By joining, a strong joining part is obtained and the back surface protection sheet body 9 and the sealing sheet 4 can be completely joined.

ところで、前記裏面保護シート5としては、太陽電池モジュール用として必要な耐候性、耐加水分解性、ガスバリア性、耐熱性の性能を兼ね備えた例えばポリフッ化ビニルフィルムを材料として作られているシートを用いることができる。   By the way, as the back surface protection sheet 5, a sheet made of, for example, a polyvinyl fluoride film having the weather resistance, hydrolysis resistance, gas barrier property, and heat resistance necessary for the solar cell module is used. be able to.

また、前記接合媒体層7のエチレン酢酸ビニル共重合体樹脂の酢酸ビニルの含有量について、その含有量を25%以下とすることにより、接合媒体層7の耐熱性を保持させることができる。酢酸ビニルの含有量が25%を超えると、接合媒体層7の耐熱性が低下するという問題がある。さらに、接合媒体層7のエチレン酢酸ビニル共重合体樹脂にエラストマー樹脂を添加することも可能で、エチレン酢酸ビニル共重合体樹脂にエラストマー樹脂を添加することにより、接合媒体層7のエチレン酢酸ビニル共重合体樹脂の酢酸ビニルの含有量が少なくても、低温でも真空加熱・加圧法により封止シート4と接合媒体層7とが接合しやすくなる。エラストマー樹脂の添加量については特に制限はないが、30%を超えて添加しても効果が上がらないことから、30%以下が望ましい。   The heat resistance of the bonding medium layer 7 can be maintained by setting the vinyl acetate content of the ethylene vinyl acetate copolymer resin in the bonding medium layer 7 to 25% or less. When the content of vinyl acetate exceeds 25%, there is a problem that the heat resistance of the joining medium layer 7 is lowered. Further, an elastomer resin can be added to the ethylene vinyl acetate copolymer resin of the bonding medium layer 7, and by adding an elastomer resin to the ethylene vinyl acetate copolymer resin, the ethylene vinyl acetate copolymer of the bonding medium layer 7 can be added. Even if the content of vinyl acetate in the polymer resin is small, the sealing sheet 4 and the bonding medium layer 7 can be easily bonded by a vacuum heating / pressurizing method even at a low temperature. Although there is no restriction | limiting in particular about the addition amount of an elastomer resin, Since an effect does not improve even if it adds exceeding 30%, 30% or less is desirable.

本発明の一実施の形態における太陽電池モジュールの概略断面図である。It is a schematic sectional drawing of the solar cell module in one embodiment of this invention.

符号の説明Explanation of symbols

1 太陽電池モジュール
2 セルモジュール
3,4 封止シート
5 裏面保護シート
6 強化ガラス板
7 接合媒体層
8 接着層
9 裏面保護シート体
DESCRIPTION OF SYMBOLS 1 Solar cell module 2 Cell module 3, 4 Sealing sheet 5 Back surface protection sheet 6 Tempered glass board 7 Bonding medium layer 8 Adhesion layer 9 Back surface protection sheet body

Claims (3)

セルモジュールと、セルモジュールを覆うエチレン酢酸ビニル共重合体樹脂(架橋EVA樹脂)からなる封止シートと、内側に位置する封止シートに積層されて接合される裏面保護シートを備えた太陽電池モジュールにおいて、裏面保護シートの封止シートに対向する面に、エチレン酢酸ビニル共重合体樹脂(EVA樹脂)からなる接合媒体層を接着層を介して積層接合させてあり、裏面保護シート側に設けた接合媒体層と封止シートとを重ね、接合媒体層と封止シートを加熱溶融接合させてなることを特徴とする太陽電池モジュール。 A solar cell module comprising a cell module, a sealing sheet made of an ethylene vinyl acetate copolymer resin (crosslinked EVA resin) covering the cell module, and a back surface protection sheet laminated and bonded to the sealing sheet positioned inside , A bonding medium layer made of ethylene vinyl acetate copolymer resin (EVA resin) is laminated and bonded to the surface facing the sealing sheet of the back surface protection sheet via an adhesive layer, and provided on the back surface protection sheet side. A solar cell module, wherein a joining medium layer and a sealing sheet are stacked and the joining medium layer and the sealing sheet are heated and melt-bonded. 接合媒体層のエチレン酢酸ビニル共重合体樹脂の酢酸ビニルの含有量を25%以下としたことを特徴とする請求項1記載の太陽電池モジュール。 2. The solar cell module according to claim 1, wherein the content of vinyl acetate in the ethylene vinyl acetate copolymer resin in the joining medium layer is 25% or less. 接合媒体層のエチレン酢酸ビニル共重合体樹脂にエラストマー樹脂を添加したことを特徴とする請求項2記載の太陽電池モジュール。 3. The solar cell module according to claim 2, wherein an elastomer resin is added to the ethylene vinyl acetate copolymer resin of the bonding medium layer.
JP2008311679A 2008-12-08 2008-12-08 Solar cell module Pending JP2010135655A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013145845A (en) * 2012-01-16 2013-07-25 Mitsubishi Electric Corp Manufacturing method of solar cell module
CN103236459A (en) * 2013-03-25 2013-08-07 江苏峰谷源储能技术研究院有限公司 Solar energy component
CN108376719A (en) * 2018-04-19 2018-08-07 安徽六和同心风能设备有限公司 A kind of packaging technology of photovoltaic module and the photovoltaic module

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09153635A (en) * 1995-09-29 1997-06-10 Bridgestone Corp Sealing material film for solar battery and solar battery module
JP2002134768A (en) * 2000-10-27 2002-05-10 Kyocera Corp Solar cell module and method of manufacturing the same
JP2007169417A (en) * 2005-12-21 2007-07-05 Kuroda Denki Kk Multifunctional halogen-free composites in plastic materials
JP2008166338A (en) * 2006-12-27 2008-07-17 Toray Ind Inc Solar cell module and sheet for sealing rear face of same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09153635A (en) * 1995-09-29 1997-06-10 Bridgestone Corp Sealing material film for solar battery and solar battery module
JP2002134768A (en) * 2000-10-27 2002-05-10 Kyocera Corp Solar cell module and method of manufacturing the same
JP2007169417A (en) * 2005-12-21 2007-07-05 Kuroda Denki Kk Multifunctional halogen-free composites in plastic materials
JP2008166338A (en) * 2006-12-27 2008-07-17 Toray Ind Inc Solar cell module and sheet for sealing rear face of same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013145845A (en) * 2012-01-16 2013-07-25 Mitsubishi Electric Corp Manufacturing method of solar cell module
CN103236459A (en) * 2013-03-25 2013-08-07 江苏峰谷源储能技术研究院有限公司 Solar energy component
CN108376719A (en) * 2018-04-19 2018-08-07 安徽六和同心风能设备有限公司 A kind of packaging technology of photovoltaic module and the photovoltaic module
CN108376719B (en) * 2018-04-19 2019-10-15 安徽六和同心风能设备有限公司 A photovoltaic module and packaging process for the photovoltaic module

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