JP3806534B2 - Solar cell module - Google Patents

Solar cell module Download PDF

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Publication number
JP3806534B2
JP3806534B2 JP04675499A JP4675499A JP3806534B2 JP 3806534 B2 JP3806534 B2 JP 3806534B2 JP 04675499 A JP04675499 A JP 04675499A JP 4675499 A JP4675499 A JP 4675499A JP 3806534 B2 JP3806534 B2 JP 3806534B2
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Japan
Prior art keywords
solar cell
outer frame
sealing material
surface side
cell panel
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JP2000243998A (en
Inventor
宏 清水
晋行 辻野
信夫 門目
孝慶 安田
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/20—Peripheral frames for modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking

Description

【０００１】
【発明の属する技術分野】
本発明は、太陽電池モジュールに関する。
【０００２】
【従来の技術】
従来の太陽電池モジュールの構造が、例えば、実開昭６１−１５１３５３号に開示されている。この構造は、太陽電池素子を含む矩形板状の太陽電池パネルと、この太陽電池パネルの外周にシール材を介して嵌め込まれた外枠とを備えるものである。
【０００３】
【発明が解決しようとする課題】
この従来の太陽電池モジュールの要部断面図を図3に示し、従来の問題点を説明する。図５において、５０は太陽電池素子５１を含む板状の太陽電池パネル、６０はこの太陽電池パネル５０の外周にシール材５２を介して嵌め込まれた金属製外枠である。太陽電池パネル５０は、受光面側の透光性絶縁基板５２と、裏面側の金属箔を絶縁性フィルムで挟着した耐候性フィルム５３とを用いて、太陽電池素子５１をその間に挟み、内部の隙間に透明樹脂５４を充てんした構造である。
【０００４】
この構造においては、シール材５２に流動性のシリコーン樹脂又はウレタン樹脂を使用した場合、図５に示すように、太陽電池パネル５０を外枠６０に嵌め込んで組み立てを完了したとき、余りのシール材が嵌合部分よりはみ出し、この余りのシール材を取り除く作業が必要となる。
【０００５】
また、シール材５２に非流動性のブチルゴムやアクリルフォームを基材とした両面粘着テープ等の樹脂を用いると、上記のような余りのシール材を取り除く作業は不要となるものの、樹脂に流動性がないために余りの樹脂が嵌合部の外に逃げることができず、外枠の組立て作業がしにくい。上記の組立て作業を容易にするため、樹脂の量を少なくすると、この部分での耐水性が低下する。
【０００６】
更には、耐候性フィルム５３は金属箔を絶縁性フィルムで挟着した構造であり、その外周端部において金属箔は、金属製外枠６０と近接又は接触することになり、絶縁不良になることが少なくなかった。絶縁性を維持するために、太陽電池パネル５０の外周に絶縁テープを施してから、外枠６０を組み立てる必要があった。
【０００７】
本発明はこのような問題点を解決するために成されたものであり、外枠の嵌合部分からのシール材のはみ出しが少ない構造、外枠の組立作業が容易で耐水性及び止水性が良好な構造、又は絶縁性が良好な構造の太陽電池モジュールを提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明の主要な構成は、太陽電池素子を含む板状の太陽電池パネルと、この太陽電池パネルの外周に、シール材を介して嵌め込まれた外枠とを備え、前記外枠の内側にシール材を溜める部分を備えることを特徴とする。
【０００９】
更なる本発明の主要な構成は、太陽電池素子を含む板状の太陽電池パネルと、この太陽電池パネルの外周にシール材を介して嵌め込まれた金属製外枠とを備え、
前記太陽電池パネルは、受光面側の透光性絶縁基板と、裏面側の金属箔を絶縁性フィルムで挟着した耐候性フィルムとを用いて、太陽電池素子をその間に挟み、内部の隙間に透明樹脂を充てんした構造であって、前記透光性絶縁基板の外周の裏面側エッジが対向する前記外枠の内側に、シール材を溜めるための凹部が設けられていることを特徴とする。
【００１０】
【発明の実施の形態】
以下に本発明の第１実施例を、図１を用いて詳細に説明する。図において、図１（ａ）は太陽電池モジュールの斜視図、図１（ｂ）は、（ａ）におけるＡ−Ａ’断面図である。図１において、１０は太陽電池素子１１を含む矩形板状の太陽電池パネル、２０はこの太陽電池パネル１０の外周にシール材３０を介して嵌め込まれたアルミ又はステンレス等の金属製外枠である。太陽電池モジュールにおける外枠２０の断面構造は、Ａ−Ａ’断面しか図示してないが、各４辺において外枠２０の断面構造は同一である。
【００１１】
次に太陽電池パネル１０の構造について説明する。太陽電池パネル１０は、受光面側のガラス等の透光性絶縁基板１２と、裏面側の金属箔を絶縁性フィルムで挟着した耐候性部材としての耐候性フィルム１３とを用いて、結晶系又はアモルファスシリコン系の複数の太陽電池素子１１をその間に挟み、内部の隙間にPVB又はEVA等の接着性の透明樹脂１４を充てんした構造である。耐候性フィルム１３の材質ついて、金属箔（約５０〜１００μm）にアルミ、亜鉛メッキ鋼板又はステンレス等、絶縁性フィルムにフッ素系樹脂又PET系樹脂等を利用することができる。
【００１２】
外枠２０において、２１は中空構造の本体部分、２２は本体部分２１の上部に位置し太陽電池パネル１０の外周部をシール材３０を介して嵌め込む断面コの字状の嵌合部分、２３は本体部分２１の外側に位置する外周溝である。この外周溝２３は、太陽電池モジュールを屋外に設置したとき、雨水が流れる溝である。
【００１３】
本発明の特徴である外枠２０の嵌合部分２２について、以下に説明する。嵌合部分２２の内側において、太陽電池パネル１０の受光面側に対向して、シール材３０を溜めるための受光面側凹部２４を、太陽電池パネル１０の背面側に対向して、シール材３０を溜めるための背面側凹部２５を有している。更に、透光性絶縁基板１２の外周の裏面側エッジ１５に対向して、シール材３０を溜めるための凹部２６を有している。そして、この透光性絶縁基板１２の裏面側エッジ１５においては、絶縁性フィルム１３の端部、つまり金属箔の端部が位置することになる。
【００１４】
次に、この第１実施例の効果を説明する。シール材３０に流動性のシリコーン樹脂又はウレタン樹脂を使用した場合、余りのシール材３０が、受光面側凹部２４、背面側凹部２５、凹部２６に溜まることになるので、上述の発明が解決しようとする課題に記載したような嵌合部分よりはみ出した余りのシール材を取り除く作業が不要となる。
【００１５】
また、シール材に非流動性のブチルゴムやアクリルフォームを基材とした両面粘着テープ等の樹脂を用いると、この樹脂が受光面側凹部２４、背面側凹部２５、凹部２６に納まることになるので、外枠２０の組立作業が容易であると共に、十分な量の樹脂を利用することができるので耐水性も良好である。上述の発明が解決しようとする課題に記載したような、樹脂に流動性がないために余りの樹脂が嵌合部の外に逃げることができず、外枠の組立作業がしにくい問題点、組立作業を容易にするために樹脂の量を少なくすることによる耐水性及び止水性の低下の問題点を解消することができた。
【００１６】
更には、凹部２６に対向して、透光性絶縁基板１２の外周側の裏面側エッジ１５、つまり絶縁フィルム１３の金属箔の端部が位置することになり、金属箔と金属製外枠２０が接触することがないので、絶縁不良となることがない。絶縁性のテストは、ＪＩＳ８９１８として、太陽電池モジュールに要求されるものであり、以下のテスト内容である。第1実施例の太陽電池モジュールは、この絶縁性テストを満足することができた。
【００１７】
テスト１：太陽電池パネルの正極、負極を短絡した状態の出力端子と金属製外枠との間に、最大システム電圧の２倍に１０００Ｖを加えた電圧を１分間印加する。この後、光照射時の太陽電池特性を測定し、その値が電圧印加前の９５％以上であり、絶縁破壊、外観異常が発生してないこと。
【００１８】
テスト２：太陽電池パネルの正極、負極を短絡した状態の出力端子と金属製外枠との間に、１０００Ｖを印加したときの抵抗が１００ＭΩ以上であること。
【００１９】
次に、図２を用いて、本発明の第2実施例を説明する。上述の第１実施例と同じ構造部分については、説明を省略し、異なる構造部分についてのみ説明をする。
第2実施例においては、耐候性部材１６として、第1実施例の耐候性フィルム１３に代えて、厚さ約０．１〜０．５mm程度（また、これ以上の厚さでも利用できる）のアルミ、ステンレ又は亜鉛メッキ鋼板等の金属板の表面及び裏面上を絶縁としたものを利用している。ここで、第１実施例の耐候性フィルム１３における金属箔に代えて、第２実施例では金属板とすることにより、耐候性を向上できると共に、裏面からの衝撃等に対して強さを増すことができる。
【００２０】
金属板の表面及び裏面上を絶縁とする構造としては、フッ素系樹脂又はPET系樹脂等の絶縁性フィルムを被着する構造、絶縁性樹脂材料を焼き付け塗装する構造が利用できる。
【００２１】
第２実施例においては、凹部２６に対向して、耐候性部材１６の金属板の端部が位置することになり、金属板と金属製外枠２０が接触することがないので、絶縁不良となることがない。その他、第２実施例は、第１実施例と同様の効果を備えている。
【００２２】
次に、図３を用いて、本発明の第３実施例を説明する。上述の第１実施例と同じ構造部分については、説明を省略し、異なる構造部分についてのみ説明をする。
第３実施例においては、シール材３０を溜めるための受光面側凹部２４、背面側凹部２５、凹部２６に加えて、コの字状の嵌合部分２２の先端側に複数の凹部２７、２８を備えている。
【００２３】
従って、シール材３０の量が少ない場合であっても、受光面側、背面側において、いずれかの凹部にシール材３０が埋まっていれば、確実に水分の侵入を防止することができる。その他、第３実施例は、第１実施例と同様の効果を備えている。
【００２４】
次に、図４を用いて、本発明の第４実施例を説明する。上述の第１実施例と同じ構造部分については、説明を省略し、異なる構造部分についてのみ説明をする。
第４実施例においては、シール材３０を溜めるための受光面側凹部２４、背面側凹部２５、凹部２６に加えて、コの字状の嵌合部分２２の先端側に、複数の凸部３１、３２を備えている。そして、凸部３１、３２は、凸部が外枠２０の外側に向いた状態になっている。
【００２５】
従って、外枠２０の外側に向いた凸部３１、３２により、太陽電池モジュールが組み立てられた後に、シール材３０が外枠２０の嵌合部分２２より、内側に抜け出ることが防止できる。更には、シール材３０の量が少ない場合であっても、受光面側、背面側において、複数の凸部３１、３２間のいずれかの凹部にシール材３０が埋まっていれば、確実に水分の侵入を防止することができる。その他、第４実施例は、第１実施例と同様の効果を備えている。
【００２６】
【発明の効果】
本発明は、次の第１の効果を有している。外枠の内側にシール材を溜める部分を備えているので、シール材に流動性のシリコーン樹脂又はウレタン樹脂を使用した場合、余りのシール材が、上記の溜める部分に溜まることになるので、上述の発明が解決しようとする課題に記載したような嵌合部分よりはみ出した余りのシール材を取り除く作業が不要となる。また、シール材に非流動性のブチルゴムやアクリルフォームを基材とする両面粘着テープ等の樹脂を用いると、この樹脂が上記の溜める部分に納まることになるので、外枠の組立作業が容易であると共に、十分な量の樹脂を利用することができるので耐水性も良好である。上述の発明が解決しようとする課題に記載したような、樹脂に流動性がないために余りの樹脂が嵌合部の外に逃げることができず、外枠の組立作業がしにくい問題点、組立作業を容易にするために樹脂の量を少なくすることによる耐水性及び止水性の低下の問題点を解消することができる。
【００２８】
また、本発明は、太陽電池パネルにおいて、裏面側に、金属箔又は金属板の表面及び裏面上を絶縁とした耐候性部材を有しており、金属製外枠において、耐候性部材の端部が対向する外枠の内側に、シール材を溜めるための凹部が設けられていることより、上記の第1の効果に加えて、金属箔又は金属板と金属製外枠が接触することがなく、太陽電池モジュールに要求される絶縁性を得ることができる。
【００２９】
更には、本発明は、太陽電池パネルにおいて、受光面側の透光性絶縁基板と、裏面側の金属箔を絶縁性フィルムで挟着した耐候性フィルムとを用いて、太陽電池素子をその間に挟み、内部の隙間に透明樹脂を充てんした構造であって、外枠において、透光性絶縁基板の外周の裏面側エッジが位置する部分、つまりが耐候性フィルムの金属箔の端部に対向する外枠の内側に、シール材を溜めるための凹部が設けられている。よって、上記第1の効果に加えて、金属箔と金属製外枠が接触することがなく、太陽電池モジュールに要求される絶縁性を得ることができる。
【図面の簡単な説明】
【図１】本発明の第1実施例を示し、（a）は斜視図、（ｂ）は（a）におけるA−A’断面図である。
【図２】本発明の第2実施例を示す断面図である。
【図３】本発明の第３実施例を示す断面図である。
【図４】本発明の第４実施例を示す断面図である。
【図５】従来の太陽電池モジュールを示す断面図である。
【符号の説明】
１０ 太陽電池パネル
１１ 太陽電池素子
１３ 耐候性フィルム
１４ 透明樹脂
１５ 裏面側エッジ
１６ 耐候性部材
２０ 外枠
２２ 嵌合部分
２４ 受光面側凹部
２５ 背面側凹部
２６、２７、２８ 凹部
３０ シール材
３１、３２ 凸部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a solar cell module.
[0002]
[Prior art]
The structure of a conventional solar cell module is disclosed, for example, in Japanese Utility Model Laid-Open No. 61-151353. This structure includes a rectangular plate-shaped solar cell panel including a solar cell element, and an outer frame fitted on the outer periphery of the solar cell panel via a sealing material.
[0003]
[Problems to be solved by the invention]
FIG. 3 shows a cross-sectional view of the main part of this conventional solar cell module, and the conventional problems will be described. In FIG. 5, 50 is a plate-like solar cell panel including the solar cell element 51, and 60 is a metal outer frame that is fitted on the outer periphery of the solar cell panel 50 via a sealing material 52. The solar cell panel 50 uses a light-transmitting insulating substrate 52 on the light-receiving surface side and a weather-resistant film 53 in which a metal foil on the back surface is sandwiched between insulating films, and sandwiches the solar cell element 51 between them. The gap is filled with a transparent resin 54.
[0004]
In this structure, when a fluid silicone resin or urethane resin is used for the sealing material 52, as shown in FIG. 5, when the assembly is completed by fitting the solar cell panel 50 into the outer frame 60, an excess seal is obtained. Since the material protrudes from the fitting portion, it is necessary to remove this excess sealing material.
[0005]
Further, if a resin such as a double-sided adhesive tape based on non-flowable butyl rubber or acrylic foam is used for the sealing material 52, the above-described work for removing the excess sealing material is not necessary, but the resin is fluid. Therefore, the excess resin cannot escape to the outside of the fitting portion, and it is difficult to assemble the outer frame. If the amount of resin is reduced in order to facilitate the above assembling operation, the water resistance at this portion is lowered.
[0006]
Furthermore, the weather-resistant film 53 has a structure in which a metal foil is sandwiched between insulating films, and the metal foil is close to or in contact with the metal outer frame 60 at the outer peripheral end, resulting in poor insulation. There were many. In order to maintain insulation, it is necessary to assemble the outer frame 60 after applying an insulating tape to the outer periphery of the solar cell panel 50.
[0007]
The present invention has been made to solve such problems, and has a structure in which the seal material does not protrude from the fitting portion of the outer frame, the outer frame is easy to assemble, and has water resistance and water resistance. An object is to provide a solar cell module having a good structure or a good insulating property.
[0008]
[Means for Solving the Problems]
A main configuration of the present invention includes a plate-like solar cell panel including a solar cell element, and an outer frame fitted on the outer periphery of the solar cell panel via a sealing material, and seals inside the outer frame. It is characterized by having a portion for storing the material.
[0009]
The main configuration of the present invention further includes a plate-like solar cell panel including a solar cell element, and a metal outer frame fitted on the outer periphery of the solar cell panel via a sealing material,
The solar cell panel uses a light-transmitting insulating substrate on the light-receiving surface side and a weather-resistant film in which a metal foil on the back surface is sandwiched with an insulating film, and sandwiches the solar cell element between them, with an internal gap. The structure is filled with a transparent resin, and is characterized in that a recess for storing a sealing material is provided inside the outer frame facing the back side edge of the outer periphery of the translucent insulating substrate.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIG. 1A is a perspective view of a solar cell module, and FIG. 1B is a cross-sectional view taken along line AA ′ in FIG. In FIG. 1, reference numeral 10 denotes a rectangular plate-like solar battery panel including the solar battery element 11, and 20 denotes a metal outer frame such as aluminum or stainless steel fitted on the outer periphery of the solar battery panel 10 via a sealing material 30. . The cross-sectional structure of the outer frame 20 in the solar cell module is shown only in the AA ′ cross section, but the cross-sectional structure of the outer frame 20 is the same on each of the four sides.
[0011]
Next, the structure of the solar cell panel 10 will be described. The solar cell panel 10 uses a light-transmitting insulating substrate 12 such as glass on the light-receiving surface side, and a weather-resistant film 13 as a weather-resistant member in which a metal foil on the back surface is sandwiched between insulating films. Alternatively, a structure in which a plurality of amorphous silicon-based solar cell elements 11 are sandwiched therebetween, and an internal transparent gap 14 filled with adhesive transparent resin 14 such as PVB or EVA is filled. Regarding the material of the weather resistant film 13, aluminum, galvanized steel plate, stainless steel or the like can be used for the metal foil (about 50 to 100 μm), and fluorine resin or PET resin can be used for the insulating film.
[0012]
In the outer frame 20, 21 is a hollow main body part, 22 is an upper part of the main body part 21, and a fitting part having a U-shaped cross section that fits the outer peripheral part of the solar cell panel 10 through the sealing material 30. Is an outer peripheral groove located outside the main body portion 21. The outer peripheral groove 23 is a groove through which rainwater flows when the solar cell module is installed outdoors.
[0013]
The fitting portion 22 of the outer frame 20 that is a feature of the present invention will be described below. Inside the fitting portion 22, the light receiving surface side concave portion 24 for storing the sealing material 30 facing the light receiving surface side of the solar cell panel 10 is opposed to the back surface side of the solar cell panel 10, and the sealing material 30. Has a back-side recess 25 for storing. Further, a concave portion 26 for storing the sealing material 30 is provided opposite to the rear surface side edge 15 on the outer periphery of the translucent insulating substrate 12. And in the back surface side edge 15 of this translucent insulating board | substrate 12, the edge part of the insulating film 13, ie, the edge part of metal foil, is located.
[0014]
Next, the effect of the first embodiment will be described. When a fluid silicone resin or urethane resin is used for the sealing material 30, the surplus sealing material 30 is accumulated in the light receiving surface side concave portion 24, the back surface side concave portion 25, and the concave portion 26. The work which removes the excess sealing material which protruded from the fitting part as described in the subject.
[0015]
Also, if a resin such as a double-sided adhesive tape based on non-flowable butyl rubber or acrylic foam is used as the sealing material, the resin will be contained in the light receiving surface side recess 24, the back surface side recess 25, and the recess 26. The outer frame 20 can be easily assembled and a sufficient amount of resin can be used, so that the water resistance is good. As described in the problem to be solved by the above-mentioned invention, since the resin does not have fluidity, excess resin cannot escape from the fitting portion, and it is difficult to assemble the outer frame. In order to facilitate the assembling work, the problem of lowering water resistance and water stoppage by reducing the amount of resin could be solved.
[0016]
Furthermore, opposite to the concave portion 26, the rear surface side edge 15 on the outer peripheral side of the translucent insulating substrate 12, that is, the end portion of the metal foil of the insulating film 13 is positioned, and the metal foil and the metal outer frame 20 are located. Since there is no contact, there will be no insulation failure. The insulation test is required for solar cell modules as JIS8918, and includes the following test contents. The solar cell module of the first example was able to satisfy this insulation test.
[0017]
Test 1: A voltage obtained by adding 1000 V to twice the maximum system voltage is applied for 1 minute between the output terminal of the solar cell panel in which the positive and negative electrodes are short-circuited and the metal outer frame. Thereafter, the solar cell characteristics at the time of light irradiation are measured, the value is 95% or more before voltage application, and there is no dielectric breakdown or appearance abnormality.
[0018]
Test 2: The resistance when 1000 V is applied between the output terminal of the solar cell panel in which the positive and negative electrodes are short-circuited and the metal outer frame is 100 MΩ or more.
[0019]
Next, a second embodiment of the present invention will be described with reference to FIG. The description of the same structural part as that in the first embodiment will be omitted, and only a different structural part will be described.
In the second embodiment, as the weather resistant member 16, instead of the weather resistant film 13 of the first embodiment, a thickness of about 0.1 to 0.5 mm (and more than this can be used). A metal plate such as aluminum, stainless steel or galvanized steel plate is used which has an insulating surface and back surface. Here, in place of the metal foil in the weather resistant film 13 of the first embodiment, by using a metal plate in the second embodiment, the weather resistance can be improved and the strength against an impact from the back surface is increased. be able to.
[0020]
As the structure that insulates the front and back surfaces of the metal plate, a structure in which an insulating film such as a fluorine-based resin or a PET-based resin is applied and a structure in which an insulating resin material is baked and painted can be used.
[0021]
In the second embodiment, the end of the metal plate of the weather-resistant member 16 is located facing the recess 26, and the metal plate and the metal outer frame 20 do not contact each other. Never become. In addition, the second embodiment has the same effects as the first embodiment.
[0022]
Next, a third embodiment of the present invention will be described with reference to FIG. The description of the same structural part as that in the first embodiment will be omitted, and only a different structural part will be described.
In the third embodiment, in addition to the light receiving surface side recess 24, the back surface side recess 25, and the recess 26 for storing the sealing material 30, a plurality of recesses 27 and 28 are formed on the distal end side of the U-shaped fitting portion 22. It has.
[0023]
Therefore, even when the amount of the sealing material 30 is small, it is possible to reliably prevent moisture from entering as long as the sealing material 30 is buried in one of the recesses on the light receiving surface side and the back surface side. In addition, the third embodiment has the same effects as the first embodiment.
[0024]
Next, a fourth embodiment of the present invention will be described with reference to FIG. The description of the same structural part as that in the first embodiment will be omitted, and only a different structural part will be described.
In the fourth embodiment, in addition to the light receiving surface side concave portion 24, the back surface side concave portion 25, and the concave portion 26 for storing the sealing material 30, a plurality of convex portions 31 are provided on the distal end side of the U-shaped fitting portion 22. , 32. The convex portions 31 and 32 are in a state in which the convex portions face the outside of the outer frame 20.
[0025]
Therefore, after the solar cell module is assembled, the sealing material 30 can be prevented from coming out of the fitting portion 22 of the outer frame 20 by the convex portions 31 and 32 facing the outer side of the outer frame 20. Furthermore, even when the amount of the sealing material 30 is small, if the sealing material 30 is buried in any one of the concave portions between the plurality of convex portions 31 and 32 on the light receiving surface side and the back surface side, moisture is surely obtained. Can be prevented from entering. In addition, the fourth embodiment has the same effects as the first embodiment.
[0026]
【The invention's effect】
The present invention has the following first effect. Since a portion for storing the sealing material is provided inside the outer frame, when a fluid silicone resin or urethane resin is used for the sealing material, excess sealing material will be collected in the above-mentioned storage portion. The work which removes the excess sealing material which protruded from the fitting part as described in the subject which this invention is going to solve becomes unnecessary. Also, if a resin such as double-sided adhesive tape based on non-flowable butyl rubber or acrylic foam is used as the sealing material, this resin will be stored in the above-mentioned reservoir, so that the outer frame can be assembled easily. In addition, since a sufficient amount of resin can be used, the water resistance is also good. As described in the problem to be solved by the above-mentioned invention, since the resin does not have fluidity, excess resin cannot escape from the fitting portion, and it is difficult to assemble the outer frame. The problem of lowering water resistance and water stoppage due to reducing the amount of resin to facilitate assembly work can be solved.
[0028]
In addition, the present invention has a weather resistant member having insulation on the front and back surfaces of the metal foil or metal plate on the back surface side in the solar cell panel, and in the metal outer frame, the end portion of the weather resistant member In addition to the first effect described above, the metal foil or metal plate and the metal outer frame are not in contact with each other because the recess for storing the sealing material is provided on the inner side of the outer frame facing each other. Insulation required for the solar cell module can be obtained.
[0029]
Furthermore, the present invention provides a solar cell panel comprising a light-transmitting insulating substrate on the light-receiving surface side and a weather-resistant film in which a metal foil on the back surface is sandwiched between insulating films, and a solar cell element interposed between them. A structure in which a transparent resin is filled in a gap between the inside and the inner space, and in the outer frame, the portion where the rear surface side edge of the outer periphery of the translucent insulating substrate is located, that is, the end of the metal foil of the weather resistant film is opposed. A recess for storing the sealing material is provided inside the outer frame. Therefore, in addition to the first effect, the insulation required for the solar cell module can be obtained without contact between the metal foil and the metal outer frame.
[Brief description of the drawings]
1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a perspective view and FIG. 1B is a cross-sectional view taken along line AA ′ in FIG.
FIG. 2 is a cross-sectional view showing a second embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a third embodiment of the present invention.
FIG. 4 is a sectional view showing a fourth embodiment of the present invention.
FIG. 5 is a cross-sectional view showing a conventional solar cell module.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Solar cell panel 11 Solar cell element 13 Weather resistant film 14 Transparent resin 15 Back surface side edge 16 Weather resistant member 20 Outer frame 22 Fitting part 24 Light-receiving surface side recessed part 25 Back surface side recessed part 26,27,28 Recessed part 30 Sealing material 31, 32 Convex

Claims (3)

太陽電池素子を含む板状の太陽電池パネルと、この太陽電池パネルの外周を、シール材を介して嵌め込む嵌合部分を有する金属製外枠と、を備え、前記外枠の嵌合部分は、前記シール材を溜めるための受光面側凹部および背面側凹部を少なくとも備え、前記嵌合部分の開口側の該背面側凹部の端部は、前記嵌合部分の開口側の該受光面側凹部の端部より開口側に位置することを特徴とする太陽電池モジュール。A plate-like solar cell panel including a solar cell element, and a metal outer frame having a fitting portion into which the outer periphery of the solar cell panel is fitted via a sealing material , and the fitting portion of the outer frame is , comprising at least a light-receiving surface side recess and the rear side recesses for storing the said sealing member, an end portion of the rear side concave portion on the opening side of the front Symbol fitting portion, the light receiving surface side of the opening side of the fitting portion solar cell module which is characterized that you located on the opening side than the end portion of the recess. 前記太陽電池パネルは、裏面側に、金属箔又は金属板の表面及び裏面上を絶縁とした耐候性部材を有し、
前記外枠において、前記耐候性部材の端部が対向する前記外枠の嵌合部分に、前記シール材を溜めるための凹部が設けられていることを特徴とする請求項１記載の太陽電池モジュール。 The solar cell panel has, on the back side, a weather-resistant member that insulates the front and back surfaces of the metal foil or metal plate,
In the outer frame, wherein the fitting portion of the outer frame end of the weather resistance member are opposed, the solar cell module according to claim 1, wherein the recess for storing the said sealing material is characterized that you have provided . 前記太陽電池パネルは、受光面側の透光性絶縁基板と、裏面側の金属箔を絶縁性フィルムで挟着した耐候性フィルムとを用いて、太陽電池素子をその間に挟み、内部の隙間に透明樹脂を充てんした構造であって、
前記外枠において、前記透光性絶縁基板の外周の裏面側エッジが対向する前記外枠の嵌合部分に、前記シール材を溜めるための凹部が設けられていることを特徴とする請求項１記載の太陽電池モジュール。The solar cell panel uses a light-transmitting insulating substrate on the light-receiving surface side and a weather-resistant film in which a metal foil on the back surface is sandwiched with an insulating film, and sandwiches the solar cell element between them, with an internal gap. A structure filled with transparent resin,
In the outer frame, according to claim 1, the back side edge of the outer periphery of the transparent insulating substrate is a mating portion of the outer frame facing, characterized in that the recesses for storing the said sealing member is provided The solar cell module described.
JP04675499A 1999-02-24 1999-02-24 Solar cell module Expired - Lifetime JP3806534B2 (en)

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