JP2005166709A - End face sealing member of solar cell module and solar cell module using the same - Google Patents

End face sealing member of solar cell module and solar cell module using the same Download PDF

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JP2005166709A
JP2005166709A JP2003399730A JP2003399730A JP2005166709A JP 2005166709 A JP2005166709 A JP 2005166709A JP 2003399730 A JP2003399730 A JP 2003399730A JP 2003399730 A JP2003399730 A JP 2003399730A JP 2005166709 A JP2005166709 A JP 2005166709A
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solar cell
cell module
sealing member
sealing
end surface
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JP4252432B2 (en
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Hiroyuki Yoshida
浩之 吉田
Tetsumasa Umemoto
哲正 梅本
Yukio Fukuda
幸夫 福田
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Sharp Corp
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Sharp Corp
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Priority to JP2003399730A priority Critical patent/JP4252432B2/en
Priority to EP04027342A priority patent/EP1548846A3/en
Priority to US10/998,087 priority patent/US20050115603A1/en
Priority to CNB2004100974077A priority patent/CN100411197C/en
Publication of JP2005166709A publication Critical patent/JP2005166709A/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/70—Sealing means
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photovoltaic Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To secure water-tightness (that is, sealability) even on a glass face having concave and convex in a structure where workability at the time of assembling a solar cell module is considered. <P>SOLUTION: An end face sealing member 1 is shaped into a U-shape frame to run along the contour of a solar cell module main body. The member 1 comprises an upper sealing section 11 abutting on the top surface of the solar cell module, a lower sealing section 12 abutting on a rear surface of the same, and a side sealing section 13 abutting on the end-face of the same. The sealing sections are formed in an almost U shape and are in a two layer structure. They are formed of the upper sealing section abutting on the top surface of the solar cell module main body, the lower sealing section abutting on the rear surface of the same and the side sealing section abutting on the end face of the same. An outer layer is hard and hardness of an inner layer is formed smaller than the outer side. Thus, adhesiveness exists and sealing becomes possible even on concavo-convex glass. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、住宅建物の屋根部分等に設置される太陽電池モジュールの端面封止部材に係り、特に、太陽電池モジュール本体とそれを支持する枠体との間の止水性能を確保するための改良に関する。   The present invention relates to an end face sealing member of a solar cell module installed on a roof portion or the like of a residential building, and in particular, to ensure water stopping performance between a solar cell module main body and a frame body that supports the solar cell module main body. Regarding improvement.

図８に示すように、太陽電池モジュールは、一般的に太陽電池モジュール本体４と枠体５とにより構成されている。図８（ａ）は太陽電池モジュール２の平面図、図８（ｂ）は図８（ａ）におけるＢ矢視図、図８（ｃ）は図８（ａ）におけるＣ矢視図である。   As shown in FIG. 8, the solar cell module is generally composed of a solar cell module main body 4 and a frame body 5. FIG. 8A is a plan view of the solar cell module 2, FIG. 8B is a view as seen from an arrow B in FIG. 8A, and FIG. 8C is a view as seen from an arrow C in FIG.

太陽電池モジュール本体４は、図９にその端部４５を一部拡大して示すように、表面側である受光面ガラス４１上（図面では下側となっている）に、エチレンビニルアセテート（ＥＶＡ）からなる受光面側封止用樹脂層４２ａ、多結晶シリコンにより形成された太陽電池セル４３、エチレンビニルアセテート（ＥＶＡ）からなる裏面側封止用樹脂層４２ｂ、裏面側封止耐候性フィルム４４の順に積層され、一体化ラミネート加工されたスーパーストレート型構造のものが知られている。これにより、この太陽電池モジュール本体４は、耐候性が確保された矩形状の薄板として構成されている。なお、上記太陽電池セル４１は、単結晶シリコンやアモルファスシリコン等で形成されたものであってもよい。   The solar cell module body 4 has an ethylene vinyl acetate (EVA) on the light receiving surface glass 41 (lower side in the drawing) on the surface side, as shown in FIG. ) Comprising a light receiving surface side sealing resin layer 42a, a solar battery cell 43 formed of polycrystalline silicon, a back side sealing resin layer 42b made of ethylene vinyl acetate (EVA), and a back side sealing weathering film 44. A super straight type structure that is laminated in the above order and is integrally laminated is known. Thereby, this solar cell module main body 4 is comprised as a rectangular-shaped thin board with which the weather resistance was ensured. The solar battery cell 41 may be formed of single crystal silicon, amorphous silicon, or the like.

枠体５は、図８及び図９（図８におけるIII部分の分解斜視図）に示すように、上記太陽電池モジュール本体４の四辺を保持するものであって、上側フレーム材５１、下側フレーム材５２、左右一対の側端フレーム材５３，５４を備えており、これらフレーム材５１，５２，５３，５４が一体的に組み付けられることにより枠状に形成されている。ただし、図１０は、下側フレーム材５２と右側の側端フレーム材５４との組み付け部分を示している。   The frame 5 holds the four sides of the solar cell module body 4 as shown in FIGS. 8 and 9 (disassembled perspective view of the portion III in FIG. 8), and includes an upper frame member 51 and a lower frame. A material 52 and a pair of left and right side edge frame materials 53 and 54 are provided, and the frame materials 51, 52, 53 and 54 are integrally assembled to form a frame shape. However, FIG. 10 shows an assembly portion of the lower frame material 52 and the right side frame material 54.

各フレーム材５１，５２，５３，５４は、アルミニウムの押出加工によりそれぞれ成形されている。上側フレーム材５１は、太陽電池モジュール本体４における住宅棟側に位置する端縁を保持している。下側フレーム材５２は、太陽電池モジュール本体４における住宅軒側に位置する端縁を保持している。各側端フレーム材５３，５４は、太陽電池モジュール本体４の左右両側縁をそれぞれ保持すると共に、上側フレーム材５１及び下側フレーム材５２の両端縁同士を連結している。   Each frame material 51, 52, 53, 54 is formed by extrusion of aluminum. The upper frame material 51 holds an edge located on the residential building side in the solar cell module body 4. The lower frame member 52 holds an edge located on the house eaves side in the solar cell module body 4. The side end frame members 53 and 54 respectively hold the left and right side edges of the solar cell module body 4 and connect both end edges of the upper frame member 51 and the lower frame member 52.

次に、これら各フレーム材５１，５２，５３，５４の基本構成について詳細に説明する。基本構成は、各フレーム材５１，５２，５３，５４に共通であるため、ここでは図１１を用いて側端フレーム材５４の断面形状について説明する。ただし、以下の断面形状の説明では、図１１における左方向を太陽電池モジュール２の外縁を構成する外側とし、図中右方向を太陽電池モジュール本体４を支持する側、つまり内側であるとして説明する。   Next, the basic configuration of each of the frame members 51, 52, 53, 54 will be described in detail. Since the basic configuration is common to the frame members 51, 52, 53, and 54, the sectional shape of the side end frame member 54 will be described with reference to FIG. However, in the following description of the cross-sectional shape, it is assumed that the left direction in FIG. 11 is the outside constituting the outer edge of the solar cell module 2, and the right direction in the drawing is the side that supports the solar cell module body 4, that is, the inside. .

図１１に示すように、側端フレーム材５４は、矩形の閉断面を有するフレーム本体５４ａを備えていると共に、このフレーム本体５４ａの上面の外側端（図中左端）から上方に延びた後、内側（図中右側）へ折り曲げられて成る延長屈曲片５４ｂが設けられている。これにより、フレーム本体５４ａの上面５４ｃと延長屈曲片５４ｂの水平部分５４ｄとの間で太陽電池モジュール本体４の外周端部が嵌り込む溝部５４ｅが形成されている。また、フレーム本体５４ａの上面５４ｃの内側端（図中右側端）には、太陽電池モジュール本体４の下面が当接するフランジ５４ｆが突設されている。なお、この溝部５４ｅの幅寸法（図９中の上下方向寸法）は、太陽電池モジュール本体４の厚さ寸法よりも僅かに大きく設定されている。   As shown in FIG. 11, the side end frame member 54 includes a frame main body 54a having a rectangular closed cross section, and extends upward from the outer end (left end in the figure) of the upper surface of the frame main body 54a. An extended bent piece 54b that is bent inward (right side in the figure) is provided. Thus, a groove portion 54e into which the outer peripheral end portion of the solar cell module body 4 is fitted is formed between the upper surface 54c of the frame body 54a and the horizontal portion 54d of the extended bent piece 54b. Further, a flange 54f with which the lower surface of the solar cell module main body 4 abuts is projected from the inner end (right end in the figure) of the upper surface 54c of the frame main body 54a. In addition, the width dimension (vertical direction dimension in FIG. 9) of this groove part 54e is set slightly larger than the thickness dimension of the solar cell module main body 4. FIG.

また、フレーム本体５４ａの外側（図中左側）の側面には、僅かに水平方向に延びた後、上方へ折り曲げられて成る延長片５４ｇが突設されている。   Further, an extension piece 54g that extends slightly in the horizontal direction and is bent upward is projected from the side surface of the outer side (left side in the drawing) of the frame main body 54a.

なお、図１０中の符号５２ｈは、下側フレーム材５２に設けられたビスホールを有するビス止め部であり、符号５４ｈは、このビス止め部５２ｈに対向して側縁フレーム材５４に設けられたビス孔である。   In addition, the code | symbol 52h in FIG. 10 is a screw stop part which has the screw hole provided in the lower frame material 52, and the code | symbol 54h is provided in the side edge frame material 54 facing this screw stop part 52h. It is a screw hole.

ところで、このような構成の太陽電池モジュール２は、太陽電池モジュール本体４と枠体５との間の止水性能を十分に確保し、この両者間の隙間から雨水等が浸入しないようにしておく必要があるため、従来から種々の止水方式が提案されている（例えば、特許文献１参照）。   By the way, the solar cell module 2 having such a configuration ensures a sufficient water stopping performance between the solar cell module main body 4 and the frame body 5 so that rainwater or the like does not enter from a gap between the two. Since it is necessary, various water stop methods have been conventionally proposed (see, for example, Patent Document 1).

図１２は、太陽電池モジュール本体４と枠体５との間を止水する従来の止水構造の一例を示しており、太陽電池モジュール本体４と枠体５との間に、テープ状の止水部材６１を介挿させた構造となっている。すなわち、止水部材６１は、側端フレーム材５４の溝部５４ｅの開放部分を覆うように配置されている。この止水部材６１は、ＥＰＤＭ等の発泡材により形成された薄板状の部材であって、側端フレーム材５４の延長片５４ｂの水平部分５４ｄからフランジ５４ｆに跨って設けられている。また、この止水部材６１は、このフランジ５４ｆの先端部分に接着されている（図１２（ａ）におけるＩ部分）。つまり、止水部材６１は、延長屈曲片５４ｂの水平部分５４ｄに対しては単に接触しているのみであって（図１２（ａ）におけるII部分）、この端部は自由端となっている。さらに、この止水部材６１の厚さ寸法は、側端フレーム材５４の溝部５４ｅの幅寸法（図１２（ａ）中の上下方向寸法）から太陽電池モジュール本体４の厚さ寸法を減じた値を１／２した寸法よりも僅かに大きく設定されている。この止水部材６１は、例えばブチレンゴムによって形成されている。   FIG. 12 shows an example of a conventional water stop structure for stopping water between the solar cell module body 4 and the frame body 5, and a tape-like stop is provided between the solar cell module body 4 and the frame body 5. The water member 61 is inserted. That is, the water stop member 61 is disposed so as to cover the open portion of the groove 54 e of the side end frame member 54. The water stop member 61 is a thin plate member formed of a foam material such as EPDM, and is provided across the horizontal portion 54d of the extension piece 54b of the side end frame material 54 and the flange 54f. In addition, the water stop member 61 is bonded to the tip portion of the flange 54f (I portion in FIG. 12A). That is, the water stop member 61 is merely in contact with the horizontal portion 54d of the extended bent piece 54b (II portion in FIG. 12A), and this end portion is a free end. . Further, the thickness dimension of the water stop member 61 is a value obtained by subtracting the thickness dimension of the solar cell module body 4 from the width dimension (vertical direction dimension in FIG. 12A) of the groove 54e of the side end frame member 54. Is set to be slightly larger than a dimension obtained by halving the size. The water stop member 61 is made of, for example, butylene rubber.

上記説明では、一方の側端フレーム材５４における止水部材６１の配設状態について説明したが、他方の側端フレーム材５３においても同様に止水部材６１，６２，６２が配設されており、さらに、上側フレーム材５１及び下側フレーム材５２においても同様にして止水部材６１が配設されている。   In the above description, the arrangement state of the water stop member 61 in the one side end frame member 54 has been described. However, the water stop members 61, 62, 62 are similarly provided in the other side end frame member 53. Further, the water stop member 61 is similarly disposed in the upper frame member 51 and the lower frame member 52.

この止水部材６１は、各フレーム５１，５２，５３，５４に太陽電池モジュール本体４を嵌め込むときに、同時に嵌め込まれる。ここでは、側端フレーム５４に対して太陽電池モジュール本体４の側端部を嵌め込む際の動作を代表して説明する。すなわち、側端フレーム材５４の溝部５４ｅに太陽電池モジュール本体４の側端部を嵌め込むと、太陽電池モジュール本体４からの押圧力によって止水部材６１が変形する。   The water stop member 61 is fitted at the same time when the solar cell module body 4 is fitted into each of the frames 51, 52, 53, 54. Here, the operation when the side end portion of the solar cell module body 4 is fitted into the side end frame 54 will be described as a representative. That is, when the side end portion of the solar cell module main body 4 is fitted into the groove portion 54 e of the side end frame member 54, the water stop member 61 is deformed by the pressing force from the solar cell module main body 4.

止水部材６１の変形は、図１２（ｂ）に示すように、止水部材６１の自由端側（図１２（ｂ）において上側に位置している部分）が太陽電池モジュール本体４によって溝部５４ｅの内部に押し込まれ、この溝部５４ｅの内面に沿って太陽電池モジュール本体４の外周部に巻き付くように変形する。このため、太陽電池モジュール本体４の外周部の表面側及び裏面側と溝部５４ｅの内面との間にはそれぞれ止水部材６１が存在することになる。この際、上述したように、止水部材６１の厚さ寸法は、溝部５４ｅの幅寸法（図１２（ｂ）中の上下方向寸法）から太陽電池モジュール本体４の厚さ寸法を減じた値の１／２よりも僅かに大きく設定されているため、この嵌め込み動作が完了した状態では、止水部材６１は溝部５４ｅの内面と太陽電池モジュール本体４の外面（表面及び裏面）との間で圧縮された状態となる。   As shown in FIG. 12B, the deformation of the water stop member 61 is such that the free end side of the water stop member 61 (the portion located on the upper side in FIG. 12B) is grooved 54e by the solar cell module body 4. Is deformed so as to be wound around the outer peripheral portion of the solar cell module body 4 along the inner surface of the groove portion 54e. For this reason, the water stop member 61 exists between the surface side and back surface side of the outer peripheral part of the solar cell module main body 4, and the inner surface of the groove part 54e, respectively. At this time, as described above, the thickness dimension of the water stop member 61 is a value obtained by subtracting the thickness dimension of the solar cell module body 4 from the width dimension of the groove portion 54e (the vertical dimension in FIG. 12B). Since it is set to be slightly larger than ½, the water stop member 61 is compressed between the inner surface of the groove 54e and the outer surface (front surface and back surface) of the solar cell module body 4 in a state where the fitting operation is completed. It will be in the state.

また、本発明者らは、上記特許文献１とは異なる構造の止水方式をすでに提案（以下、「提案技術」という。）している。具体的には、太陽電池モジュール本体の外形に沿って形成された枠形状の端面封止部材を用意し、この端面封止部材を太陽電池モジュール本体の端部全周に渡って嵌め込んだ状態で枠体に嵌め込む構造としている。そのため、端面封止部材は、太陽電池モジュール本体の表面側に当接する上側封止片と、太陽電池モジュール本体の裏面側に当接する下側封止片と、太陽電池モジュール本体の端面に当接する横側封止片からなる断面略コ字状に形成されている。この封止部材を用い、太陽電池モジュールの端面封止を行っていた。
特開２００１−２３０４４０号公報（図６（ａ）、図８） In addition, the present inventors have already proposed a water-stop method having a structure different from that of Patent Document 1 (hereinafter referred to as “proposed technology”). Specifically, a frame-shaped end surface sealing member formed along the outer shape of the solar cell module body is prepared, and the end surface sealing member is fitted over the entire circumference of the end portion of the solar cell module body. It has a structure that fits into the frame. Therefore, the end surface sealing member contacts the upper sealing piece that contacts the front surface side of the solar cell module main body, the lower sealing piece that contacts the rear surface side of the solar cell module main body, and the end surface of the solar cell module main body. It is formed in a substantially U-shaped cross section made of a lateral sealing piece. The end face sealing of the solar cell module was performed using this sealing member.
JP 2001-230440 A (FIG. 6A, FIG. 8)

上記構成の止水構造によれば、太陽電池モジュール本体４とそれを支持する枠体５との間の止水性能を確保することができる。   According to the water stop structure of the said structure, the water stop performance between the solar cell module main body 4 and the frame 5 which supports it is securable.

しかし、上記特許文献１の止水構造では、太陽電池モジュール本体４の外周端部を枠体５の溝部５４ｅに嵌め込むときに、同時にテープ状の止水部材６１を枠体５の溝部５４ｅ内に押し込みながら嵌め込んでいく構造であるため、止水部材６１の一方の縁部がフランジ５４ｆの先端部分に接着されているとはいうものの、押し込み圧によって止水部材６１がずれ、太陽電池モジュール本体４の周端部全体を均等の状態で封止することが難しいといった問題があった。また、ずれて枠体の溝部からはみ出した部分については、作業者がナイフ等で切除するという後工程が必要となるため、作業工程が増加するといった問題があった。   However, in the water stop structure of Patent Document 1, when the outer peripheral end portion of the solar cell module body 4 is fitted into the groove portion 54e of the frame body 5, the tape-like water stop member 61 is simultaneously placed in the groove portion 54e of the frame body 5. The water-stopping member 61 is displaced by the pressing-in pressure even though one edge of the water-stopping member 61 is bonded to the tip end portion of the flange 54f. There was a problem that it was difficult to seal the entire peripheral end of the main body 4 in a uniform state. In addition, since the post-process where the operator cuts out the groove portion of the frame body with a knife or the like is necessary, there is a problem that the work process increases.

また、テープ状の止水部材６１を折り曲げながら枠体５の溝部５４ｅ内に押し込んでいくため、この押し込み作業も煩雑であり、手間と時間とがかかるといった問題もあった。   Further, since the tape-shaped water-stopping member 61 is pushed into the groove portion 54e of the frame body 5 while being bent, the pushing operation is complicated and there is a problem that it takes time and effort.

さらに、枠体５の角部分では、止水部材６１が無理な状態で折り曲げられるため、この部分については別の止水部材を用意しなければならず、特に角部分の止水性能を充分に確保することが難しいといった問題もあった。   Furthermore, since the water-stop member 61 is bent in an unreasonable state at the corner portion of the frame body 5, another water-stop member must be prepared for this portion, and the water-stop performance of the corner portion is particularly sufficient. There was also a problem that it was difficult to secure.

一方、上記提案技術の止水構造では、太陽電池モジュール本体４のガラスの受光面側が平坦である場合には十分に効果を発揮するものの、ガラス面に凹凸のある場合には凹凸部より水か浸入する可能性があるといった問題が残されていた。これは、上記特許文献１も同様である。   On the other hand, the water stop structure of the above proposed technique is sufficiently effective when the light receiving surface side of the glass of the solar cell module body 4 is flat. The problem of possible intrusion remained. The same applies to Patent Document 1 described above.

本発明はかかる問題点を解決すべく創案されたもので、その目的は、太陽電池モジュールを組み付けるときの作業性を考慮した簡単な構造で止水性（すなわち、封止性）を得る太陽電池モジュールの端面封止部材及びそれを用いた太陽電池モジュールを提供することにある。   The present invention was devised to solve such problems, and the object thereof is a solar cell module that obtains water-stopping (that is, sealing properties) with a simple structure considering workability when assembling the solar cell module. It is providing the end surface sealing member of this, and a solar cell module using the same.

本発明は、太陽電池モジュール本体が枠体に嵌め込まれた構造の太陽電池モジュールを前提としている。そして、太陽電池モジュール本体の外形に沿って形成された枠形状の端面封止部材を用意し、この端面封止部材を太陽電池モジュール本体の端部全周に渡って嵌め込んだ状態で枠体に嵌め込む構造としている。   The present invention is premised on a solar cell module having a structure in which a solar cell module main body is fitted in a frame. Then, a frame-shaped end face sealing member formed along the outer shape of the solar cell module body is prepared, and the end face sealing member is fitted over the entire periphery of the end portion of the solar cell module body. It has a structure that fits in.

そのため、端面封止部材は、太陽電池モジュール本体の表面側に当接する上側封止片と、太陽電池モジュール本体の裏面側に当接する下側封止片と、太陽電池モジュール本体の端面に当接する横側封止片からなる断面略コ字状に形成され、かつ２層構造であり、外層部材が硬く、内層部材の硬度が外層部材より小さく形成されている。これにより、凹凸のあるガラス面でも密着性があり封止が可能となる。   Therefore, the end surface sealing member contacts the upper sealing piece that contacts the front surface side of the solar cell module main body, the lower sealing piece that contacts the rear surface side of the solar cell module main body, and the end surface of the solar cell module main body. It is formed in a substantially U-shaped cross section made of a lateral side sealing piece, has a two-layer structure, the outer layer member is hard, and the inner layer member is smaller in hardness than the outer layer member. As a result, even an uneven glass surface has adhesiveness and can be sealed.

この場合、端面封止部材は、下側封止片が上側封止片よりも長くなるように形成されていてもよい。下側封止片は、太陽電池モジュール本体の裏面側に当接する部分であり、端面封止部材が太陽電池モジュール本体から容易に抜け落ちないようにすることができる。また、枠体形状は従来と同様であり、図１１に示すように、下側封止片と当接する部分であるフランジ５４ｆが、下側封止片と当接する延長屈曲片５４ｂの水平部分５４ｄより長いので、この水平部分５４ｄに合った長さに形成しておくほうが、止水性の面からも好適である。   In this case, the end surface sealing member may be formed such that the lower sealing piece is longer than the upper sealing piece. The lower sealing piece is a part that contacts the back side of the solar cell module body, and the end surface sealing member can be prevented from easily falling off from the solar cell module body. Further, the shape of the frame is the same as in the prior art, and as shown in FIG. 11, the flange 54f, which is a portion that comes into contact with the lower sealing piece, has a horizontal portion 54d of the extended bent piece 54b that comes into contact with the lower sealing piece. Since it is longer, it is preferable to form it in a length suitable for the horizontal portion 54d from the viewpoint of water blocking.

また、上側封止片と下側封止片にはそれぞれ内層部材の外層部材からのはみ出しを防止するための突起部が形成されている。このような突起部を形成することで、太陽電池モジュール本体の周端部に封止部材を嵌め込んだ状態で、この封止部材部分を枠体の溝に嵌め込んだとき、枠体の溝によって封止部材が圧接され、密着することにより、凹凸のあるガラス面においても確実に封止される。   Further, the upper sealing piece and the lower sealing piece are each provided with a protrusion for preventing the inner layer member from protruding from the outer layer member. By forming such a protrusion, when the sealing member is fitted in the groove of the frame body in a state where the sealing member is fitted in the peripheral end of the solar cell module body, the groove of the frame body As a result, the sealing member is pressed against and brought into close contact with each other, so that even a rough glass surface is reliably sealed.

なお、このような封止構造は、表面側である凹凸のある受光面ガラス上に、エチレンビニルアセテートからなる受光面側封止用樹脂層、太陽電池セル、エチレンビニルアセテートからなる裏面側封止用樹脂層、裏面側封止耐候性フィルムの順に積層され、一体化ラミネート加工されたスーパーストレート構造の太陽電池モジュール本体に適用した場合に、より効果が得られる。ただし、スーパーストレート構造のものに限るものではなく、例えば、表裏両面がガラスで形成されている採光型の太陽電池モジュールにも適用可能である。   In addition, such a sealing structure has a light-receiving surface side sealing resin layer made of ethylene vinyl acetate, a solar battery cell, and a back surface side sealing made of ethylene vinyl acetate on an uneven light-receiving surface glass on the front side. When applied to a super straight structure solar cell module main body laminated in the order of a resin layer for use and a back-side sealed weathering film and integrally laminated, the effect is further obtained. However, the present invention is not limited to the super straight structure, and can be applied to, for example, a daylighting solar cell module in which both front and back surfaces are made of glass.

以上説明したように、本発明では、太陽電池モジュール本体が枠体に嵌め込まれた構造の太陽電池モジュールを前提としている。そして、太陽電池モジュール本体の外形に沿って形成された枠形状で２層構造の端面封止部材を用意し、この端面封止部材を太陽電池モジュール本体の端部全周に渡って嵌め込んだ状態で枠体に嵌め込む構造としている。このように、枠形状に形成された一体型の端面封止部材を太陽電池モジュール本体の端部全周に渡って嵌め込む構造としたので、ガラスの受光面側に凹凸が形成されている太陽電池モジュール本体にも密着し確実に封止することができ、水の進入を確実に防ぐことができる。   As described above, the present invention is premised on the solar cell module having a structure in which the solar cell module main body is fitted in the frame. Then, an end surface sealing member having a two-layer structure is prepared in a frame shape formed along the outer shape of the solar cell module body, and the end surface sealing member is fitted over the entire periphery of the end portion of the solar cell module body. The structure is fitted into the frame in the state. As described above, since the integrated end surface sealing member formed in the frame shape is fitted over the entire periphery of the end portion of the solar cell module main body, the sun with the irregularities formed on the light receiving surface side of the glass The battery module main body can be tightly sealed and reliably sealed, and water can be reliably prevented from entering.

また、断面コ字状またはＵ字状の端面封止部材を太陽電池モジュール本体に嵌め込んだ状態で枠体に嵌め込むので、枠体に嵌め込む際に端面封止部材がずれるといった心配もなく、また嵌め込み作業性も向上する。   Further, since the end face sealing member having a U-shaped cross section or U shape is fitted into the frame body while being fitted into the solar cell module body, there is no concern that the end face sealing member may be displaced when fitted into the frame body. In addition, fitting workability is also improved.

また、端面封止部材の下側封止片を上側封止片よりも長く形成することにより、端面封止部材が太陽電池モジュール本体から容易に抜け落ちないようにすることができるとともに、太陽電池モジュール本体の裏面側の止水性も向上する。   Further, by forming the lower sealing piece of the end surface sealing member longer than the upper sealing piece, the end surface sealing member can be prevented from easily falling off from the solar cell module body, and the solar cell module The water-stopping property on the back side of the main body is also improved.

また、上側封止片と下側封止片の対向面に突起部を形成することにより、この端面封止部材を枠体の溝部に嵌め込んだとき、枠体の溝部によって端面封止部材が圧接され、突起部が太陽電池モジュール本体の表面側と裏面側とに押し潰されるようにして密着されるため、太陽電池モジュール本体の端面を確実に封止することができる。さらに、上側封止片及び下側封止片の先端部を、凹部側に傾斜して設けておくことにより、上側封止片及び下側封止片の先端部も太陽電池モジュール本体の表面側と裏面側とに押し付けられて密着されるため、突起部との相乗効果により、太陽電池モジュール本体の端面をより確実に封止することができる。   Further, by forming a protrusion on the opposing surface of the upper sealing piece and the lower sealing piece, when the end surface sealing member is fitted into the groove portion of the frame body, the end surface sealing member is formed by the groove portion of the frame body. Since the projecting portion is pressed and brought into close contact with the front surface side and the back surface side of the solar cell module body, the end surface of the solar cell module body can be reliably sealed. Furthermore, by providing the tip portions of the upper sealing piece and the lower sealing piece so as to be inclined toward the concave portion, the tip portions of the upper sealing piece and the lower sealing piece are also on the surface side of the solar cell module body. Because of the synergistic effect with the protrusions, the end surface of the solar cell module body can be more reliably sealed.

以下、本発明の実施の形態について、図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

［実施の形態１］
図１は、本発明の実施の形態１に係わる端面封止部材１の全体斜視図、図２は図１のＤ−Ｄ線断面図である。なお、本実施の形態１では、太陽電池モジュール本体については、図９に示すスーパーストレート構造の太陽電池モジュール本体４を使用し、枠体については、図１１に示す構造の枠体５を使用して、以下の説明を行うものとする。 [Embodiment 1]
1 is an overall perspective view of an end surface sealing member 1 according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line DD of FIG. In the first embodiment, a solar cell module body 4 having a super straight structure shown in FIG. 9 is used for the solar cell module body, and a frame body 5 having a structure shown in FIG. 11 is used for the frame body. The following explanation will be given.

この端面封止部材１は、図６に示す太陽電池モジュール本体４の外形に沿って形成された枠形状となっており、太陽電池モジュール本体４の端部４５（図９参照）全周に渡って嵌め込まれた状態で、枠体５の各フレーム５１，５２，５３，５４に嵌め込まれる。   This end surface sealing member 1 has a frame shape formed along the outer shape of the solar cell module main body 4 shown in FIG. 6, and extends over the entire periphery of the end 45 (see FIG. 9) of the solar cell module main body 4. In this state, the frame 5 is fitted into the frames 51, 52, 53, 54.

この端面封止部材１は、図２に示すように断面略コ字状または断面略Ｕ字状に形成され、かつ２層構造となっており、太陽電池モジュール本体４の表面側である凹凸のある受光面ガラス４１に当接する上側封止片１１と、太陽電池モジュール本体４の裏面側封止耐候性フィルム４４に当接する下側封止片１２と、太陽電池モジュール本体４の端面４５ａ（図９参照）に当接する横側封止片１３とで構成されている。これら上側封止片１１、下側封止片１２及び横側封止片１３によって、太陽電池モジュール本体４の端部４５に嵌め込む凹溝部１４が形成されている。   As shown in FIG. 2, the end surface sealing member 1 has a substantially U-shaped cross section or a substantially U-shaped cross section, and has a two-layer structure. The upper sealing piece 11 in contact with a certain light receiving surface glass 41, the lower sealing piece 12 in contact with the back side sealing weathering film 44 of the solar cell module body 4, and the end face 45a of the solar cell module body 4 (FIG. 9) and the lateral side sealing piece 13 that abuts. The upper sealing piece 11, the lower sealing piece 12, and the lateral sealing piece 13 form a concave groove portion 14 that fits into the end 45 of the solar cell module body 4.

また、上側封止片１１及び下側封止片１２は、横側封止片１３の各端部１３ａ，１３ａから若干両外側に開いて設けられており、各先端部１１ａ，１２ａは、互いの方向、すなわち凹溝部１４側に向かって傾斜するように屈曲形成されている。この両先端部１１ａ，１２ａの間隔Ｔは、太陽電池モジュール本体４の端部４５の厚みとほぼ同じかそれよりも若干狭くなるように形成されている。また、横側封止片１３の各端部１３ａ，１３ａは、枠体５への嵌め込みを容易とするために、湾曲状に形成されている。ただし、図２中に破線で示すように、斜めにカットしたテーパ面１３ｂ，１３ｂとしてもよい。   Further, the upper sealing piece 11 and the lower sealing piece 12 are provided to be opened slightly outward from the respective end portions 13a, 13a of the lateral sealing piece 13, and the respective leading end portions 11a, 12a are mutually connected. In other words, it is bent so as to incline toward the concave groove portion 14 side. The distance T between the two end portions 11a, 12a is formed to be substantially the same as or slightly narrower than the thickness of the end portion 45 of the solar cell module body 4. Further, the end portions 13 a and 13 a of the lateral sealing piece 13 are formed in a curved shape in order to facilitate fitting into the frame body 5. However, as shown by a broken line in FIG. 2, tapered surfaces 13b and 13b cut obliquely may be used.

このように形成された端面封止部材１の各封止片１１，１２，１３は、硬度の異なる部材の複層構造（本実施の形態１では２層構造）になっている。すなわち、外層側である各封止片１１，１２，１３の内側に、各封止片１１，１２，１３より硬度が小さく凹凸のある面においても密着が可能な内挿部材１１１，１２１，１３１が形成されている。   Each of the sealing pieces 11, 12, 13 of the end surface sealing member 1 formed in this way has a multilayer structure of members having different hardnesses (a two-layer structure in the first embodiment). That is, the insertion members 111, 121, 131 that can be adhered to the inner side of each sealing piece 11, 12, 13 on the outer layer side even on a surface having a smaller hardness and unevenness than each sealing piece 11, 12, 13. Is formed.

図３（ａ）は、上記構成の端面封止部材１を太陽電池モジュール本体４の端部４５に嵌め込んだ状態を示している。   FIG. 3A shows a state in which the end surface sealing member 1 having the above configuration is fitted into the end 45 of the solar cell module body 4.

この状態では、内挿部材１１１，１２１は、太陽電池モジュール本体４の受光面ガラス４１及び裏面側封止耐候性フィルム４４に当接しているが、上側封止片１１及び下側封止片１２の各先端部１１ａ，１２ａは、太陽電池モジュール本体４の受光面ガラス４１及び裏面側封止耐候性フィルム４４に若干圧接した状態で接しており、太陽電池モジュール本体４の端部４５を保持する力を有している。これにより、端面封止部材１が太陽電池モジュール本体４の端部４５から簡単に抜け外れる心配はない。   In this state, the insertion members 111 and 121 are in contact with the light receiving surface glass 41 and the back side sealing weather-resistant film 44 of the solar cell module body 4, but the upper sealing piece 11 and the lower sealing piece 12. Each of the front end portions 11a and 12a is in contact with the light receiving surface glass 41 and the back side sealing weather-resistant film 44 of the solar cell module body 4 in a state of being slightly pressed, and holds the end portion 45 of the solar cell module body 4. Have power. Thereby, there is no fear that the end surface sealing member 1 is easily detached from the end portion 45 of the solar cell module body 4.

この状態で太陽電池モジュール本体４の端部４５を枠体５の溝部５４ｅに嵌め込むと、図３（ｂ）に示すように、溝部５４ｅの内面に沿って端面封止部材１が変形し、上側封止片１１及び下側封止片１２の各内側部材１１１，１２１(図示省略)、及び上側封止片１１及び下側封止片１２の各先端部１１ａ，１２ａが押し潰されて、太陽電池モジュール本体４の凹凸のある受光面ガラス４１及び裏面側封止耐候性フィルム４４に密着する。またこのとき、端面封止部材１の横側封止片１３の内挿部材１３１も太陽電池モジュール本体４の端面４５ａに密着し、太陽電池モジュール本体４の端面４５ａが完全に封止されることになる。   In this state, when the end 45 of the solar cell module body 4 is fitted into the groove 54e of the frame 5, the end surface sealing member 1 is deformed along the inner surface of the groove 54e as shown in FIG. The inner members 111 and 121 (not shown) of the upper sealing piece 11 and the lower sealing piece 12 and the tip portions 11a and 12a of the upper sealing piece 11 and the lower sealing piece 12 are crushed, The solar cell module main body 4 is in close contact with the uneven light-receiving surface glass 41 and the back surface side weather-resistant film 44. At this time, the insertion member 131 of the lateral sealing piece 13 of the end surface sealing member 1 is also in close contact with the end surface 45a of the solar cell module body 4, and the end surface 45a of the solar cell module body 4 is completely sealed. become.

［実施の形態２］
図４は、本発明の実施の形態２に係る端面封止部材１Ａの断面図である。 [Embodiment 2]
FIG. 4 is a cross-sectional view of end face sealing member 1A according to Embodiment 2 of the present invention.

本実施の形態２の端面封止部材１Ａと上記実施の形態１の端面封止部材１との違いは、太陽電池モジュール本体４の裏面側封止耐候性フィルム４４に当接する下側封止片１２Ａが、太陽電池モジュール本体４の受光面ガラス４１に当接する上側封止片１１より長く形成されている点であり、その他の構成は、上記実施の形態１の端面封止部材１と同様である。従って、実施の形態１の端面封止部材１の構成部分と同じ構成部分には同符号を付すこととし、詳細な説明は省略する。   The difference between the end surface sealing member 1A of the second embodiment and the end surface sealing member 1 of the first embodiment is that the lower sealing piece that abuts against the back surface side weathering film 44 of the solar cell module body 4 12A is longer than the upper sealing piece 11 in contact with the light receiving surface glass 41 of the solar cell module body 4, and the other configuration is the same as that of the end surface sealing member 1 of the first embodiment. is there. Accordingly, the same components as those of the end surface sealing member 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

このように、下側封止片１２Ａを上側封止片１１より長く形成したのは、図１１に示すように、フレーム本体５４ａの上面５４ｃの内側端にフランジ５４ｆを設けており、このフランジ５４ｆ分だけ、延長屈曲片５４ｂの水平部分５４ｄより長くなっているからである。そのため、下側封止片１２Ａの長さは、上面５４ｃの基端部（延長屈曲片５４ｂとの接合部分）からフランジ５４ｆの先端までの長さにほぼ合致した長さに形成されている。   In this way, the lower sealing piece 12A is formed longer than the upper sealing piece 11, as shown in FIG. 11, by providing a flange 54f at the inner end of the upper surface 54c of the frame body 54a. This is because the length is longer than the horizontal portion 54d of the extended bent piece 54b. Therefore, the length of the lower sealing piece 12A is formed so as to substantially match the length from the base end portion (joined portion with the extended bent piece 54b) of the upper surface 54c to the tip of the flange 54f.

図５は、上記構成の端面封止部材１Ａを太陽電池モジュール本体４の端部４５に嵌め込んだ状態で、さらに枠体５に嵌め込んだ状態を示している。   FIG. 5 shows a state in which the end surface sealing member 1 </ b> A having the above configuration is fitted into the end portion 45 of the solar cell module body 4 and is further fitted into the frame body 5.

この状態では、枠体５の溝部５４ｅの内面に沿って端面封止部材１が変形し、上側封止片１１及び下側封止片１２Ａの各内側部材１１１，１２Ａ１（図示省略）、及び上側封止片１１及び下側封止片１２Ａの各先端部１１ａ，１２ａが押し潰されて太陽電池モジュール本体４の受光面ガラス４１及び裏面側封止耐候性フィルム４４に密着する。この場合、下側封止片１２Ａが、溝部５４ｅの上面５４ｃ及びフランジ５４ｆのほぼ全体に渡って密着するため、太陽電池モジュール本体４の裏面側の止水性が向上する。またこのとき、端面封止部材１の横側封止片１３の内挿部材１３１（図示省略）も太陽電池モジュール本体４の端面４５ａに密着し、太陽電池モジュール本体４の端面４５ａが完全に封止されることになる。   In this state, the end surface sealing member 1 is deformed along the inner surface of the groove portion 54e of the frame body 5, and each of the inner members 111, 12A1 (not shown) of the upper sealing piece 11 and the lower sealing piece 12A, and the upper side The front end portions 11 a and 12 a of the sealing piece 11 and the lower sealing piece 12 </ b> A are crushed and brought into close contact with the light-receiving surface glass 41 and the back-side sealed weathering film 44 of the solar cell module body 4. In this case, since the lower sealing piece 12A is in close contact with substantially the entire upper surface 54c and flange 54f of the groove 54e, the water stoppage on the back surface side of the solar cell module body 4 is improved. At this time, the insertion member 131 (not shown) of the lateral sealing piece 13 of the end surface sealing member 1 is also in close contact with the end surface 45a of the solar cell module body 4, and the end surface 45a of the solar cell module body 4 is completely sealed. Will be stopped.

なお、スーパーストレート構造の太陽電池モジュール本体４は、図９に示すように、表面側の受光面ガラス４１に対し、裏面側が薄い封止耐候性フィルム４４であるため、一体化ラミネート加工を行うと、裏面側が強く引っ張られて若干傾斜することになる。そのため、本実施の形態２のように下側封止片１２Ａを長くしておくと、このような傾斜に対してもあまり影響されることなく、端面封止部材１Ａを太陽電池モジュール本体４の端部４５に確実に嵌め込むことができるといった利点もある。逆に言えば、太陽電池モジュール本体４からの抜け防止の効果もある。
［実施の形態３］
図６は、本発明の実施の形態３に係る端面封止部材１Ｂの断面図である。 In addition, as shown in FIG. 9, the solar cell module main body 4 having a super straight structure is a sealed weathering film 44 whose back side is thin with respect to the light receiving surface glass 41 on the front side. The back side is strongly pulled and tilted slightly. Therefore, if the lower sealing piece 12A is made long as in the second embodiment, the end surface sealing member 1A is attached to the solar cell module main body 4 without being significantly affected by such an inclination. There is also an advantage that the end portion 45 can be securely fitted. In other words, there is an effect of preventing the solar cell module body 4 from coming off.
[Embodiment 3]
FIG. 6 is a cross-sectional view of an end face sealing member 1B according to Embodiment 3 of the present invention.

本実施の形態３の端面封止部材１Ｂと上記実施の形態１の端面封止部材１との違いは、上側封止片１１と下側封止片１２との対向面にそれぞれ突起部１１ｂ，１２ｂが形成されている点であり、その他の構成は、上記実施の形態１の端面封止部材１と同様である。従って、実施の形態１の端面封止部材１の構成部分と同じ構成部分には同符号を付すこととし、詳細な説明は省略する。   The difference between the end surface sealing member 1B of the third embodiment and the end surface sealing member 1 of the first embodiment is that the protrusions 11b and 11b are formed on the opposing surfaces of the upper sealing piece 11 and the lower sealing piece 12, respectively. The other structure is the same as that of the end surface sealing member 1 of the first embodiment. Accordingly, the same components as those of the end surface sealing member 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

この突起部１１ｂ，１２ｂは、太陽電池モジュール本体４の周端部（端辺）に沿って平行に、すなわち、凹溝部１４の長手方向に沿って平行に形成された１条または複数条（本実施の形態３では２条形成されている）のリブ片形状となっている。また、上側封止片１１及び下側封止片１２の各内層部材１１１，１２１は、この突起部１１ｂ，１２ｂも被覆するように設けられている。すなわち、突起部１１ｂ，１２ｂは、内層部材１１１，１２１が、外層部材である上側封止片１１及び下側封止片１２からのはみ出しを防止するために形成されている。このような突起部１１ｂ，１２ｂを形成することで、太陽電池モジュール本体４の周端部に端面封止部材１Ｂを嵌め込んだ状態で、この端面封止部材１Ｂを枠体５の溝部５４ｅに嵌め込んだとき、枠体５の溝部５４ｅによって端面封止部材１Ｂが圧接され、密着することにより、凹凸のある受光面ガラス４１のガラス面においても確実に封止される。
［実施の形態４］
図７は、本発明の実施の形態４に係る端面封止部材１Ｃの断面図である。 The protrusions 11b and 12b are parallel to the circumferential end (side) of the solar cell module body 4, that is, one or a plurality of strips (the main strip) formed in parallel along the longitudinal direction of the groove 14. In Embodiment 3, two ribs are formed). Moreover, each inner layer member 111,121 of the upper side sealing piece 11 and the lower side sealing piece 12 is provided so that this protrusion part 11b, 12b may also be coat | covered. That is, the protruding portions 11b and 12b are formed in order for the inner layer members 111 and 121 to prevent the upper sealing piece 11 and the lower sealing piece 12 that are outer layer members from protruding. By forming such protrusions 11b and 12b, the end surface sealing member 1B is fitted into the groove portion 54e of the frame 5 in a state where the end surface sealing member 1B is fitted into the peripheral end portion of the solar cell module body 4. When fitted, the end surface sealing member 1B is pressed against and brought into close contact with the groove portion 54e of the frame body 5, so that the glass surface of the uneven receiving surface glass 41 is also reliably sealed.
[Embodiment 4]
FIG. 7 is a cross-sectional view of end face sealing member 1C according to Embodiment 4 of the present invention.

本実施の形態４の端面封止部材１Ｃと上記実施の形態２の端面封止部材１Ａとの違いは、上側封止片１１と下側封止片１２との対向面にそれぞれ突起部１１ｂ，１２ｂが形成されている点であり、その他の構成は、上記実施の形態２の端面封止部材１Ａと同様である。従って、実施の形態２の端面封止部材１Ａの構成部分と同じ構成部分には同符号を付すこととし、詳細な説明は省略する。   The difference between the end surface sealing member 1C of the fourth embodiment and the end surface sealing member 1A of the second embodiment is that the protruding portions 11b, 12b is formed, and the other configuration is the same as that of the end surface sealing member 1A of the second embodiment. Accordingly, the same components as those of the end surface sealing member 1A of the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

この突起部１１ｂ，１２ｂは、太陽電池モジュール本体４の周端部（端辺）に沿って平行に、すなわち、凹溝部１４の長手方向に沿って平行に形成された１条または複数条（本実施の形態４では２条形成されている）のリブ片形状となっている。また、上側封止片１１及び下側封止片１２の各内層部材１１１，１２C１は、この突起部１１ｂ，１２ｂも被覆するように設けられている。すなわち、突起部１１ｂ，１２ｂは、内層部材１１１，１２C１が、外層部材である上側封止片１１及び下側封止片１２からはみ出すのを防止するために形成されている。このような突起部１１ｂ，１２ｂを形成することで、太陽電池モジュール本体４の周端部に端面封止部材１Ｃを嵌め込んだ状態で、この端面封止部材１Ｃを枠体５の溝部５４ｅに嵌め込んだとき、枠体５の溝部５４ｅによって端面封止部材１Ｃが圧接され、密着することにより、凹凸のある受光面ガラス４１のガラス面においても確実に封止される。   The protrusions 11b and 12b are parallel to the circumferential end (side) of the solar cell module body 4, that is, one or a plurality of strips (the main strip) formed in parallel along the longitudinal direction of the groove 14. In Embodiment 4, two ribs are formed). Further, the inner layer members 111 and 12C1 of the upper sealing piece 11 and the lower sealing piece 12 are provided so as to cover the protrusions 11b and 12b. That is, the protrusions 11b and 12b are formed to prevent the inner layer members 111 and 12C1 from protruding from the upper sealing piece 11 and the lower sealing piece 12 which are outer layer members. By forming the protrusions 11b and 12b, the end surface sealing member 1C is inserted into the groove portion 54e of the frame 5 in a state where the end surface sealing member 1C is fitted into the peripheral end portion of the solar cell module body 4. When fitted, the end surface sealing member 1 </ b> C is pressed into contact with the groove portion 54 e of the frame body 5 and brought into close contact, so that the glass surface of the uneven receiving surface glass 41 is also reliably sealed.

次に、上記実施の形態１〜実施の形態４の端面封止部材１，１Ａ，１Ｂ，１Ｃの材質について説明する。   Next, the materials of the end surface sealing members 1, 1A, 1B, and 1C of the first to fourth embodiments will be described.

端面封止部材１，１Ａ，１Ｂ，１Ｃの材質としては、ポリプロピレン系またはポリスチレン系のエラストマー樹脂又はシリコン樹脂が好適である。より具体的には、ポリプロピレン系エラストマー樹脂として、例えばＰＰ−ＥＰＤＭ（ポリプロピレン−エチレン・プロピレン・ジエン共重合系合成ゴム）の共重合体、ポリスチレン系エラストマー樹脂として、例えばポリスチレン−イソプレンの共重合体がより好適である。   As a material of the end surface sealing members 1, 1A, 1B, and 1C, a polypropylene-based or polystyrene-based elastomer resin or silicon resin is preferable. More specifically, for example, PP-EPDM (polypropylene-ethylene / propylene / diene copolymer synthetic rubber) copolymer is used as the polypropylene elastomer resin, and polystyrene-isoprene copolymer is used as the polystyrene elastomer resin. More preferred.

ポリプロピレン系及びポリスチレン系のエラストマー樹脂は、低比重による軽量化、生産性及びリサイクル性、着色意匠性、耐候性（長期物性保存）、シール性、耐熱老化性、低温柔軟性（−４０℃）、押出寸法品安定性、押出品設計断面柔軟性、熱溶着性、などの特徴を有している。そのため、硫化ゴムのような複雑な工程を必要とせず、一般のプラスチックと同様に簡単に押出成形できるので、本願の太陽電池モジュール本体の封止部材として用いる場合のように、精密な断面形状が要求される場合に好適な材料である。   Polypropylene-based and polystyrene-based elastomer resins are light weighted by low specific gravity, productivity and recyclability, coloring design, weather resistance (long-term physical property storage), sealing properties, heat aging resistance, low temperature flexibility (−40 ° C.), It has features such as extrusion dimension stability, extrudate design cross section flexibility, and heat weldability. Therefore, it does not require a complicated process such as sulfurized rubber, and can be easily extruded as in the case of general plastics, so that it has a precise cross-sectional shape as used as a sealing member for the solar cell module body of the present application. It is a suitable material when required.

また、本発明で使用する外層部材および内層部材の硬度は次の通り、外層部材には部材の強度を保つため硬度７０（ショアＡ）以上のものを用い、内部部材には凹凸面を止水するため、硬度４０（ショアＡ）以下のものを用いる。   In addition, the hardness of the outer layer member and the inner layer member used in the present invention is as follows, so that the outer layer member has a hardness of 70 (Shore A) or more to maintain the strength of the member, and the inner member has a concavo-convex surface with a water stoppage. Therefore, one having a hardness of 40 (Shore A) or less is used.

本発明の実施の形態１に係わる端面封止部材の全体斜視図である。It is a whole perspective view of the end surface sealing member concerning Embodiment 1 of this invention. 図１のＤ−Ｄ線断面図である。It is the DD sectional view taken on the line of FIG. （ａ）は、実施の形態１の端面封止部材を太陽電池モジュール本体の端部に嵌め込んだ状態を示す一部拡大断面図、（ｂ）は、（ａ）に示す状態の太陽電池モジュール本体の端部を枠体の溝部に嵌め込んだ状態を示す一部拡大断面図である。(A) is a partially expanded sectional view which shows the state which fitted the end surface sealing member of Embodiment 1 in the edge part of a solar cell module main body, (b) is a solar cell module of the state shown to (a) It is a partially expanded sectional view which shows the state which fitted the edge part of the main body into the groove part of the frame. 本発明の実施の形態２に係わる端面封止部材の断面図である。It is sectional drawing of the end surface sealing member concerning Embodiment 2 of this invention. 端面封止部材を太陽電池モジュール本体の端部に嵌め込んだ状態で、さらに枠体の溝部に嵌め込んだ状態を示す一部拡大断面図である。It is a partially expanded sectional view which shows the state further fitted in the groove part of the frame in the state which fitted the end surface sealing member in the edge part of a solar cell module main body. 本発明の実施の形態３に係わる端面封止部材の断面図である。It is sectional drawing of the end surface sealing member concerning Embodiment 3 of this invention. 本発明の実施の形態４に係わる端面封止部材の断面図である。It is sectional drawing of the end surface sealing member concerning Embodiment 4 of this invention. （ａ）は、太陽電池モジュールの平面図、（ｂ）は、（ａ）におけるＢ矢視図、（ｃ）は、（ａ）におけるＣ矢視図である。(A) is a top view of a solar cell module, (b) is a B arrow view in (a), (c) is a C arrow view in (a). スーパーストレート構造の太陽電池モジュール本体の端部を一部拡大して示す断面図である。It is sectional drawing which partially enlarges and shows the edge part of the solar cell module main body of a super straight structure. 図６におけるIII 部分の分解斜視図である。It is a disassembled perspective view of the III part in FIG. 枠体の断面図である。It is sectional drawing of a frame. （ａ）は、止水部材の配置状態を示す断面図、（ｂ）は、止水部材の変形状態を示す断面図である。(A) is sectional drawing which shows the arrangement | positioning state of a water stop member, (b) is sectional drawing which shows the deformation | transformation state of a water stop member.

符号の説明Explanation of symbols

２ 太陽電池モジュール
４ 太陽電池モジュール本体
５ 枠体
１１ 上側封止片（外層部材）
１２ 下側封止片（外層部材）
１３ 横側封止片（外層部材）
１１ａ，１２ａ 先端部
１１ｂ，１２ｂ 突起部
１３ａ 端部
１３ｂ テーパ面
４１ 受光面ガラス
４２ａ 受光面側封止用樹脂層
４２ｂ 裏面側封止用樹脂層
４３ 太陽電池セル
４４ 裏面側封止耐候性フィルム
１１１，１２１,１２Ａ１，１２Ｃ１ 内層部材 2 Solar cell module 4 Solar cell module body 5 Frame 11 Upper sealing piece (outer layer member)
12 Lower sealing piece (outer layer member)
13 Side sealing piece (outer layer member)
11a, 12a Tip portion 11b, 12b Protruding portion 13a End portion 13b Tapered surface 41 Light receiving surface glass 42a Light receiving surface side sealing resin layer 42b Back surface side sealing resin layer 43 Solar cell 44 Back surface sealing weathering film 111 , 121, 12A1, 12C1 Inner layer member

Claims (10)

太陽電池モジュール本体が枠体に嵌め込まれた構造の太陽電池モジュールの端面封止部材において、
前記太陽電池モジュール本体の外形に沿って形成された枠形状であり、前記太陽電池モジュール本体の端部全周に渡って嵌め込まれた状態で前記枠体に嵌め込まれている前記端面封止部材が、硬度の異なる部材の複層構造になっていることを特徴とするの端面封止部材。 In the end surface sealing member of the solar cell module having a structure in which the solar cell module body is fitted in the frame,
The end face sealing member is a frame shape formed along the outer shape of the solar cell module body, and is fitted into the frame body in a state of being fitted over the entire periphery of the end portion of the solar cell module body. An end face sealing member having a multilayer structure of members having different hardnesses. 前記端面封止部材は、太陽電池モジュール本体の表面側に当接する上側封止片と、太陽電池モジュール本体の裏面側に当接する下側封止片と、太陽電池モジュール本体の端面に当接する横側封止片とからなる断面略コ字状に形成されていることを特徴とする請求項１に記載の太陽電池モジュールの端面封止部材。   The end surface sealing member includes an upper sealing piece that contacts the front surface side of the solar cell module body, a lower sealing piece that contacts the back surface side of the solar cell module body, and a lateral surface that contacts the end surface of the solar cell module body. The end surface sealing member of the solar cell module according to claim 1, wherein the end surface sealing member is formed in a substantially U-shaped cross section including a side sealing piece. 前記端面封止部材が２層構造であり、外層部材が硬く、内層部材の硬度が外層部材より小さく形成されていることを特徴とする請求項２に記載の太陽電池モジュールの端面封止部材。   The end face sealing member for a solar cell module according to claim 2, wherein the end face sealing member has a two-layer structure, the outer layer member is hard, and the inner layer member has a lower hardness than the outer layer member. 前記端面封止部材の内層部材が外層部材より短い構造である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の端面封止部材。   The end surface sealing member for a solar cell module according to claim 3, wherein an inner layer member of the end surface sealing member has a shorter structure than an outer layer member. 前記上側封止片の外層部材と前記下側封止片の外層部材との対向面の少なくとも１方に突起部が形成されていることを特徴とする請求項２または請求項３に記載の太陽電池モジュールの端面封止部材。   4. The sun according to claim 2, wherein a protrusion is formed on at least one of opposing surfaces of the outer layer member of the upper sealing piece and the outer layer member of the lower sealing piece. An end surface sealing member of the battery module. 前記外層部材の突起部の内側に前記内層部材が形成されていることを特徴とする請求項４に記載の太陽電池モジュールの端面封止部材。   The end surface sealing member for a solar cell module according to claim 4, wherein the inner layer member is formed inside a protrusion of the outer layer member. 前記太陽電池モジュール本体は、表面側である受光面ガラス上に、エチレンビニルアセテートからなる受光面側封止用樹脂層、太陽電池セル、エチレンビニルアセテートからなる裏面側封止用樹脂層、裏面側封止耐候性フィルムの順に積層され、一体化ラミネート加工されたスーパーストレート型構造であり、かつガラスの受光面側に凹凸があることを特徴とする請求項１に記載の太陽電池モジュールの端面封止部材。   The solar cell module body has a light-receiving surface side sealing resin layer made of ethylene vinyl acetate, a solar battery cell, a back surface side sealing resin layer made of ethylene vinyl acetate, and a back surface side on the light-receiving surface glass on the front side. The end face seal of the solar cell module according to claim 1, which has a super straight type structure laminated in order of sealing weather-resistant film and integrally laminated, and has irregularities on the light receiving surface side of the glass. Stop member. 前記端面封止部材の材質としてエラストマー樹脂またはシリコン樹脂が用いられていることを特徴とする請求項７に記載の太陽電池モジュールの端面封止部材。   The end face sealing member for a solar cell module according to claim 7, wherein an elastomer resin or a silicon resin is used as a material for the end face sealing member. 太陽電池モジュール本体が枠体に嵌め込まれた構造の太陽電池モジュールにおいて、前記太陽電池モジュール本体の外形に沿って形成された枠形状の端面封止部材が、前記太陽電池モジュール本体の、端部全周に渡って嵌め込まれた状態で前記枠体に嵌め込まれており、前記端面封止材は、硬度の異なる部材の複層構造になっていることを特徴とする太陽電池モジュール。   In the solar cell module having a structure in which the solar cell module main body is fitted in the frame body, a frame-shaped end surface sealing member formed along the outer shape of the solar cell module main body includes the entire end portion of the solar cell module main body. A solar cell module, wherein the solar cell module is fitted into the frame body in a state of being fitted over a circumference, and the end surface sealing material has a multilayer structure of members having different hardnesses. 前記太陽電池モジュール本体は、表面側である受光面ガラス上に、エチレンビニルアセテートからなる受光面側封止用樹脂層、太陽電池セル、エチレンビニルアセテートからなる裏面側封止用樹脂層、裏面側封止耐候性フィルムの順に積層され、一体化ラミネート加工されたスーパーストレート型構造であって、かつガラスの受光面側に凹凸が形成されていることを特徴とする請求項9に記載の太陽電池モジュール。
The solar cell module body has a light-receiving surface side sealing resin layer made of ethylene vinyl acetate, a solar battery cell, a back surface side sealing resin layer made of ethylene vinyl acetate, and a back surface side on the light-receiving surface glass on the front side. 10. The solar cell according to claim 9, wherein the solar cell according to claim 9 is a super straight type structure laminated in order of a sealing weather resistant film and integrally laminated, and has irregularities formed on the light receiving surface side of the glass. module.
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