JP4326990B2 - Roof material integrated solar cell module - Google Patents

Roof material integrated solar cell module Download PDF

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JP4326990B2
JP4326990B2 JP2004075713A JP2004075713A JP4326990B2 JP 4326990 B2 JP4326990 B2 JP 4326990B2 JP 2004075713 A JP2004075713 A JP 2004075713A JP 2004075713 A JP2004075713 A JP 2004075713A JP 4326990 B2 JP4326990 B2 JP 4326990B2
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roof
cable
solar cell
branch
branch portion
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JP2005264483A (en
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布野　　秀和
俊夫 五十嵐
宣孝 長谷川
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Fuji Electric Co Ltd
Asahi Kasei Construction Materials Corp
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Fuji Electric Systems Co Ltd
Asahi Kasei Construction Materials Corp
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    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Photovoltaic Devices (AREA)

Description

本発明は、平形の屋根材ブロックに太陽電池を搭載した屋根材一体型太陽電池モジュールに関する。   The present invention relates to a roof material integrated solar cell module in which solar cells are mounted on a flat roof material block.

太陽電池は、太陽の光エネルギーから直接電気エネルギーを得る発電装置である。地球環境問題がクローズアップされる中、太陽電池はクリーンなエネルギー源として脚光を浴び、徐々に導入が進んでいる。   A solar cell is a power generation device that directly obtains electrical energy from solar light energy. As global environmental issues are being highlighted, solar cells are attracting attention as a clean energy source and gradually being introduced.

例えば、住宅の屋根に設置される太陽電池モジュールを例にとると、これまでは発電素子を封止した太陽電池をガラスなどの表面保護材でカバーし、これにフレームを取り付けたモジュールを、屋根の上に設置した架台に取り付ける方法が多く採用されている。この場合、端子は通常太陽電池モジュールの非受光面から取り出され、端子箱などを経由してモジュールの非受光面側で配線されることが多い。   For example, taking a solar cell module installed on the roof of a house as an example, a solar cell module in which a power generating element is sealed is covered with a surface protective material such as glass and a frame is attached to the roof. Many methods are used to attach to the pedestal installed on the top. In this case, the terminal is usually taken out from the non-light-receiving surface of the solar cell module and is often wired on the non-light-receiving surface side of the module via a terminal box or the like.

しかし、この架台設置型モジュールは美観に優れているとは言い難く、最近では美観に配慮した建材一体型太陽電池がその主流になりつつある。   However, it is difficult to say that this pedestal-mounted module is excellent in aesthetics, and recently, building material integrated solar cells that are aesthetically conscious are becoming mainstream.

例えば、屋根材一体型太陽電池モジュールとして、横葺き式の屋根材ブロック（平形瓦）の上面に太陽電池を装着し、その太陽電池から屋根材の後縁側に引き出した出力ケーブルを介して太陽電池モジュールの相互間，およびパワーコンディショナに通じる出力母線ケーブル（配線ケーブル）との間で直列，並列に配線して太陽光発電システムを構築するようにした構成のものが知られている（例えば、特許文献１，特許文献２参照。）。   For example, as a roofing material integrated solar cell module, a solar cell is mounted on the upper surface of a horizontal roofing material block (flat tile), and the solar cell is output from the solar cell to the rear edge side of the roofing material through an output cable. A configuration in which a photovoltaic power generation system is constructed by wiring in series and in parallel between modules and an output bus cable (wiring cable) leading to a power conditioner is known (for example, (See Patent Document 1 and Patent Document 2.)

次に、前記した屋根材一体型太陽電池モジュールの構造、およびモジュール相互間の配線構造を図９，図１０で説明する。   Next, the structure of the above-described roof material integrated solar cell module and the wiring structure between the modules will be described with reference to FIGS.

図９において、１は太陽電池、２はセメント，モルタル，金属材料，強化プラスチックなどを素材として作られた平型の屋根瓦である。ここで、太陽電池１は単結晶，多結晶系シリコン，あるいはアモルファス系シリコンの太陽電池素子を表面保護材（例えば、ＥＴＦＥなどのフッ素系樹脂フィルム），封止材（例えば、ＥＶＡ（エチレン酢酸ビニル共重合体））で封止したフィルム基板形の薄膜太陽電池であり、その裏面中央に出力端子ボックス１１を取付け、この出力端子ボックス１１から太陽電池１の出力端子に接続した正極（＋），負極（−）の出力ケーブル４，４を、屋根瓦の上辺縁部２ｂから引き出し、各出力ケーブル４，４にプラグ５およびソケット６を取付けた構成になる。   In FIG. 9, 1 is a solar cell, 2 is a flat roof tile made of cement, mortar, metal material, reinforced plastic or the like. Here, the solar cell 1 is composed of a single crystal, polycrystalline silicon, or amorphous silicon solar cell element made of a surface protective material (for example, a fluorine-based resin film such as ETFE) and a sealing material (for example, EVA (ethylene vinyl acetate). A film substrate type thin film solar cell sealed with a copolymer)), and an output terminal box 11 is attached to the center of the back surface of the thin film solar cell, and a positive electrode (+), connected to the output terminal of the solar cell 1 from the output terminal box 11 The negative output cables 4 and 4 are pulled out from the upper edge 2b of the roof tile, and the plug 5 and the socket 6 are attached to the output cables 4 and 4, respectively.

一方、屋根瓦２には、その上面側に太陽電池１，出力端子ボックス１１を収容する凹部４１，４２、および出力端子ボックスの収容凹部４２と屋根瓦２の後縁（棟側）との間に前記出力ケーブル４，４を収容する配線の誘導溝４２ａが形成されており、ここに太陽電池１，出力端子ボックス１１および出力ケーブル４，４を嵌入してシリコーンなどの接着剤で接合している。なお、２ｃは隣接する屋根瓦と重ね継ぎするための袖形フランジ部、２ｄは屋根瓦２を屋根の野地板に固定する釘の通し穴である。   On the other hand, the roof tile 2 has recesses 41 and 42 for accommodating the solar cell 1 and the output terminal box 11 on the upper surface side, and between the accommodation recess 42 of the output terminal box and the rear edge (ridge side) of the roof tile 2. Is formed with a wiring guide groove 42a for accommodating the output cables 4 and 4, and the solar cell 1, the output terminal box 11 and the output cables 4 and 4 are fitted therein and bonded with an adhesive such as silicone. Yes. In addition, 2c is a sleeve-shaped flange part for lap-joining with an adjacent roof tile, 2d is a through-hole of the nail which fixes the roof tile 2 to the roof base plate.

次に、前記した屋根材一体型太陽電池モジュールの複数枚を建屋の屋根に葺設して太陽光発電システムを構築する配線構造、およびその配線作業を図１０で説明する。   Next, a wiring structure for constructing a photovoltaic power generation system by laying a plurality of roof material-integrated solar cell modules as described above on the roof of a building and its wiring work will be described with reference to FIG.

太陽電池１の直流出力を交流に変換して商用電力系統に連系する図示しないパワーコンディショナ（インバータ）の入力電圧は一般にＤＣ２００Ｖ程度である。これに対して、住宅用建屋の屋根に葺設する太陽電池付屋根瓦の一枚当たりの出力電圧は、屋根瓦のサイズによって異なる。そこで、図１０で示すように複数枚の太陽電池付屋根瓦２１をアレイ状に横葺きした状態で、左右に並ぶ所定枚数（太陽電池一枚当たりの出力電圧が５０Ｖであれば４枚）を単位として、横並びする４枚の太陽電池付屋根瓦２１の太陽電池１（Ａ〜Ｄで表す）の間で各太陽電池１から引き出した出力ケーブル４，４のプラグ５とソケット６を接続し、太陽電池Ａ〜Ｄの相互間を直列接続して出力電圧を２００Ｖに昇圧した太陽電池付屋根瓦のブロックを構成する。次に、アレイ状に並べて横葺きした太陽電池付屋根瓦２１の列に沿ってその棟側に正極，負極の基幹ケーブル７，７を敷設した上で、前記太陽電池付屋根瓦ブロックの両端に並ぶ太陽電池１（Ａ，Ｄ）から後縁側（棟側）に引き出した＋極，−極の出力ケーブル４，４のプラグ５，ソケット６を基幹ケーブル７，７の分岐部８に極性を合わせて並列接続する。以下、軒から棟側に順に横葺きした各列の太陽電池モジュールについても前記と同様な配線作業を行った後、各列の基幹ケーブル７，７の末端を接続ボックスに集約させてパワーコンディショナに接続する。   The input voltage of a power conditioner (inverter) (not shown) that converts the direct current output of the solar cell 1 into alternating current and is linked to the commercial power system is generally about DC 200V. On the other hand, the output voltage per sheet of roof tiles with solar cells installed on the roof of a residential building varies depending on the size of the roof tiles. Therefore, as shown in FIG. 10, in a state where a plurality of roof tiles with solar cells 21 are laid down in an array, a predetermined number arranged on the left and right (four if the output voltage per solar cell is 50V) As a unit, the plug 5 and the socket 6 of the output cables 4 and 4 drawn from each solar cell 1 are connected between the solar cells 1 (represented by AD) of the four roof tiles with solar cells 21 side by side, A block of roof tiles with solar cells whose output voltage is increased to 200 V by connecting the solar cells A to D in series is configured. Next, the positive and negative core cables 7 and 7 are laid on the ridge side along the row of the roof tiles with solar cells 21 that are lined up in an array, and the roof tile blocks with solar cells are arranged at both ends. Match the polarity of the plugs 5 and sockets 6 of the positive and negative output cables 4 and 4 drawn from the solar cells 1 (A and D) to the trailing edge side (ridge side) to the branch portions 8 of the main cables 7 and 7. Connect in parallel. For the solar cell modules in each row that lay side by side from the eave to the building side, after performing the same wiring work as described above, the ends of the main cables 7 and 7 in each row are aggregated in a connection box to be a power conditioner. Connect to.

なお、図１０においては、太陽電池が４直列，１並列の場合を示したが、直並列の形態や数は、太陽光発電システムの仕様によって種々のバリエーションがある。   In addition, in FIG. 10, although the case where the solar cell was 4 series and 1 parallel was shown, the form and number of series-parallel have various variations with the specification of a solar power generation system.

ところで、複数の太陽電池を屋根等の建材に敷設して太陽光発電システムを構築する場合、配線作業を含めて、施工上、下記のような問題がある。前述の太陽電池付屋根瓦を例にとると、軒側の瓦を施工した後に、この瓦から取り出されている出力ケーブル４を、基幹ケーブル７につなぎこむ作業が行われる。従って、屋根の上には軒側の太陽電池付屋根瓦２１から取り出された出力ケーブル４と基幹ケーブル７及び分岐部８が自由な状態で置かれ、この状態では、分岐部８が基幹ケーブル７のねじれにより浮き上がりや、出力ケーブル４と重なる場合がある。   By the way, when constructing a solar power generation system by laying a plurality of solar cells on a building material such as a roof, there are the following problems in construction including wiring work. Taking the roof tile with solar cells as an example, after constructing the roof tile on the eaves side, the work of connecting the output cable 4 taken out from the roof tile to the trunk cable 7 is performed. Therefore, the output cable 4, the main cable 7, and the branch portion 8 taken out from the roof tile 21 with solar cells on the eaves side are placed on the roof in a free state. In this state, the branch portion 8 is the main cable 7. May twist up and overlap the output cable 4.

また、太陽電池付屋根瓦と屋根の野地板とのスペースは僅少のため、分岐部８の厚さ寸法を小とし、野地板と並行且つ密着するようにして設置高さを、かなり小としない限り、水上側の太陽電池付屋根瓦を設置する際に、太陽電池付屋根瓦の裏面に前記分岐部８が当って邪魔になる。このような場合、分岐部８の姿勢修正と太陽電池付屋根瓦の設置確認を繰り返すことが必要となり、施工の作業効率を大きく低下させる問題があった。   In addition, since the space between the roof tile with solar cells and the roof base plate is very small, the thickness of the branching portion 8 is made small, and the installation height is not made small so as to be in parallel and in close contact with the base plate. As long as the roof tile with solar cells on the water side is installed, the branch portion 8 hits the back surface of the roof tile with solar cells and gets in the way. In such a case, it is necessary to repeat the posture correction of the branching portion 8 and the installation confirmation of the roof tiles with solar cells, which causes a problem of greatly reducing the work efficiency of the construction.

前記施工の作業効率を改善するために、前記出力ケーブルや分岐部を仮止め、もしくは予め固定する提案がなされ、特許文献３や特許文献４により出願されている。   In order to improve the work efficiency of the construction, proposals have been made to temporarily fix or fix the output cable and the branch part in advance, and patent applications 3 and 4 have been filed.

特許文献３の発明は、同公報の記載によれば、「野地板上に載置されたままの電力ケーブルは、太陽電池モジュールの葺設作業の際には、乱れたケーブルが作業者の足で踏まれて断線したり、先端の接続端子が既に固定した太陽電池モジュールと野地板の間に入って取り出し不能となるといった不都合が生じ易く、作業能率低下の原因になるとともに施工における安全性の点からも問題があることに鑑みてなされた発明」であり、「電力ケーブルを屋根本体に仮止めする仮止め手段を備え、前記仮止め手段は、電力ケーブルを屋根本体に拘束して、屋根上における姿勢の乱れを防止するものをいい、粘着テープやステープルを用いることも含まれるが、特に、前記電力ケーブルの長手方向に沿った外被表面に単若しくは複数の薄肉突片又は略全長に渡り連続した薄肉突条を設けるとともに、前記仮止め手段を当該突片又は突条とこれを屋根本体に止着する釘、ネジ若しくはホッチキス、又はこれらの組み合わせにより構成する。」旨を開示する。   According to the description of the patent publication 3, the power cable that is still placed on the base plate is not connected to the operator's feet when the solar cell module is installed. It is easy to cause inconveniences such as being disconnected by being stepped on, or becoming impossible to take out between the solar cell module and the ground plate where the connection terminal at the tip is already fixed, and it causes a reduction in work efficiency and from the viewpoint of safety in construction The invention has been made in view of the above problems, and includes "temporary fixing means for temporarily fixing the power cable to the roof main body, and the temporary fixing means restrains the power cable to the roof main body and This refers to a device that prevents the posture from being disturbed, and includes the use of adhesive tape and staples. In particular, one or a plurality of thin-walled projecting pieces or substantially A thin protrusion that is continuous over a long length is provided, and the temporary fixing means is constituted by the protrusion or protrusion and a nail, a screw, a staple, or a combination thereof that fixes the protrusion to the roof body. To do.

次に、特許文献４の発明は、「太陽電池モジュールの踏み割れや反りなどに対する強度を確保し、ケーブル等の踏み断線や雨水故障などから保護するこのできる屋根パネル配線構造の提供」を課題とし、この課題の解決手段として、特許文献４においては、下記のような構成を開示する。即ち、「太陽電池モジュールの発生電力を集約させる集約ケーブルを接続させる分岐ジョイントボックスと、この分岐ジョイントボックスおよび集約ケーブルが収められる流し桟とを備える。流し桟は野地板２上面に固定するための断面Ｌ字型脚片部とこの脚片部間に橋架された橋架片部とからなる溝部を有し、その脚片部の側面に設けた切り欠き部に分岐ジョイントボックスが引掛けられ、集約ケーブルとともに流し桟の溝部に収められる。分岐ジョイントボックスの側面には、太陽電池モジュール出力ケーブルが接続されるコネクタを内蔵された突出部が設けられる。」
特開２００２−９３２６号公報（図７、図９） 特開平１０−１３５４９９号公報（図１、図２） 特開２００１−４０８４６号公報（第３〜６頁、図１〜７） 特開平１０−３２５２２３号公報（第２〜４頁、図１〜４） Next, the invention of Patent Document 4 has as its subject “providing a roof panel wiring structure capable of ensuring the strength against a stepping crack or warping of a solar cell module and protecting it from a stepping break of a cable or a rainwater failure”. As a means for solving this problem, Patent Document 4 discloses the following configuration. That is, “a branch joint box for connecting an aggregation cable for aggregating the power generated by the solar cell module and a sink for storing the branch joint box and the aggregation cable. The sink for fixing to the upper surface of the field plate 2 is provided. It has a groove part consisting of an L-shaped leg piece and a bridge piece bridged between the leg pieces, and a branch joint box is hooked on the notch provided on the side of the leg piece, and consolidated. Along with the cable, it is housed in the groove of the sink, and on the side surface of the branch joint box, there is a protruding part with a built-in connector to which the solar cell module output cable is connected.
JP 2002-9326 A (FIGS. 7 and 9) JP-A-10-135499 (FIGS. 1 and 2) JP 2001-40846 A (pages 3-6, FIGS. 1-7) Japanese Patent Laid-Open No. 10-325223 (pages 2 to 4, FIGS. 1 to 4)

しかしながら、上記特許文献３や４の発明によっても、下記のような問題がある。特許文献３によれば、電力ケーブルが釘、ネジ、ホッチキス等の仮止め手段で仮止めされるので、配線の乱れが施工作業の妨げとなることは防止できるが、配線を固定しても分岐ケーブルのねじれによる分岐ジョイントボックスの起き上がりは防止できない。従って、分岐部８の姿勢修正と太陽電池付屋根瓦の設置確認を繰り返す必要が生ずる、前述のような問題は、依然として残る。また、配線を仮固定する箇所数がかなり多くなるので、作業効率が低下する新たな問題が生じ、全体的にみて、施工の作業効率が悪い問題は解消されない。   However, the inventions of Patent Documents 3 and 4 have the following problems. According to Patent Document 3, since the power cable is temporarily fixed by temporary fixing means such as a nail, a screw, and a stapler, it is possible to prevent the disturbance of the wiring from interfering with the construction work. The rise of the branch joint box due to the twisting of the cable cannot be prevented. Therefore, the above-described problem still remains that it is necessary to repeat the posture correction of the branching portion 8 and the installation confirmation of the roof tiles with solar cells. In addition, since the number of places where the wiring is temporarily fixed is considerably increased, a new problem of lowering work efficiency occurs, and the problem of poor work efficiency of construction as a whole cannot be solved.

また、特許文献４によれば、分岐ジョイントボックス（分岐部）が流し桟に収められるので、出力ケーブルの節目ともいうべき分岐ジョイントボックスが確実に固定されるが、「流し桟」の部品および取り付け作業が必要となり、施工工数および部品コストが増大する。また、金属製の流し桟のエッジでケーブルを破損し、短絡を招く恐れもある。   Further, according to Patent Document 4, since the branch joint box (branch portion) is housed in the sink, the branch joint box, which can also be called a node of the output cable, is securely fixed. Work is required, and the number of construction steps and parts costs increase. In addition, the cable may be damaged at the edge of the metal sink, causing a short circuit.

この発明は、上記の点に鑑みてなされたもので、本発明の課題は、部品点数や施工工数の増大なしに、出力ケーブルの分岐部を確実に固定することにより、太陽電池付屋根瓦の敷設作業や配線接続作業の容易性および確実性の向上を図った屋根材一体型太陽電池モジュールを提供することにある。   The present invention has been made in view of the above points, and the object of the present invention is to securely fix the branch portion of the output cable without increasing the number of parts and the number of construction steps, so that the roof tile with solar cells can be obtained. An object of the present invention is to provide a roof material-integrated solar cell module that is improved in ease and certainty of laying work and wiring connection work.

上記課題は、以下により達成される。即ち、この発明によれば、屋根材ブロック（屋根瓦）の上面に太陽電池を設けた構成になり、その複数枚をアレイ状に並べて屋根面に横葺きし、その棟側に沿って敷設した配線用の基幹ケーブルに、前記太陽電池から引き出した電気出力ケーブルの分岐ケーブルを電気的に接続するための分岐部を介して、前記複数個の太陽電池を直列または並列に接続して太陽光発電システムを構築するようにした屋根材一体型太陽電池モジュールにおいて、前記分岐部は、屋根下地材へ直接固定することを可能とした固定手段を備え、前記分岐部の固定手段は、前記屋根瓦を屋根下地材へ固定するためのＬ字状釘と、このＬ字状釘の一辺に設けた凸部に係合するように、前記分岐部における固定部に設けた凹部とからなることを特徴とする（請求項１）。 The above-mentioned subject is achieved by the following. That is, according to the present invention, the solar cell is provided on the top surface of the roofing material block (roof tile), and a plurality of the batteries are arranged in an array and laid on the roof surface, and laid along the ridge side. Solar power generation by connecting the plurality of solar cells in series or in parallel to a trunk cable for wiring via a branch portion for electrically connecting a branch cable of an electrical output cable drawn from the solar cell In the roof material-integrated solar cell module configured to construct a system, the branch portion includes a fixing means that can be directly fixed to a roof base material, and the fixing means of the branch portion includes the roof tile. wherein an L-shaped nail for fixing to the roof bed material, so as to engage the convex portion provided on one side of the L-shaped nails, the Rukoto such and a recess formed in the fixed portion of the branch portion (Claim 1).

前記構成によれば、部品点数や施工工数の増大なしに、出力ケーブルの分岐部を確実に固定することができるので、従来の問題点が解消され、太陽電池モジュールの敷設作業や配線接続作業が容易かつ確実となる。即ち、前記構成によれば、分岐部の固定に、太陽電池付屋根瓦の左右の重なる部分の下側を、軒側下段の太陽電池付屋根材の取付穴を通して固定するのに用いるＬ状釘を流用することができるので、専用工具・専用の取付金具を必要とせず作業効率の向上やコストダウンが可能となる。また、この場合には、単なる釘と釘貫通用の貫通穴を用いて固定するような構成とは異なり、分岐部に貫通穴用のスペースを必要としないので、分岐部のコンパクト化が図れる。 According to the above configuration, the branch portion of the output cable can be securely fixed without increasing the number of parts and construction man-hours, so the conventional problems are solved, and the solar cell module laying work and wiring connection work are eliminated. Easy and reliable. That is, according to the said structure, the L-shaped nail used to fix the lower side of the left and right overlapping portions of the roof tile with solar cells through the mounting holes of the roof member with solar cells on the eaves side lower side for fixing the branch portion Therefore, it is possible to improve work efficiency and reduce costs without the need for dedicated tools or dedicated mounting brackets. Further, in this case, unlike a configuration in which the nails are fixed using a through hole for penetrating the nail, a space for the through hole is not required in the branch portion, so that the branch portion can be made compact.

また、前記請求項１の発明の実施態様としては、下記請求項２の発明が好ましい。即ち、前記請求項１に記載のモジュールにおいて、前記基幹ケーブルは正負の両極性に対応する２芯ケーブルとし、前記分岐部は、前記２芯ケーブルと分岐ケーブルとの電気的接続部および各ケーブルの分岐部導入部全体を樹脂成型により絶縁被覆してなるものとすることを特徴とする（請求項２）。これにより、分岐部の電気絶縁性が向上するとともに、分岐部が比較的、強度を有する塊状の部品となるので、分岐部の固定構造を容易化することができる。 As an embodiment of the invention of claim 1, the invention of claim 2 is preferable. That is, in the module according to claim 1, the backbone cable is a two-core cable corresponding to both positive and negative polarities, and the branch portion includes an electrical connection portion between the two-core cable and the branch cable and each cable. The entire branch part introduction part is formed by insulating coating by resin molding (claim 2). As a result, the electrical insulation of the branch portion is improved, and the branch portion becomes a massive part having a relatively high strength. Therefore, the fixing structure of the branch portion can be facilitated.

さらに、前記課題は、下記請求項３の発明によっても達成される。即ち、屋根材ブロック（屋根瓦）の上面に太陽電池を設けた構成になり、その複数枚をアレイ状に並べて屋根面に横葺きし、その棟側に沿って敷設した配線用の基幹ケーブルに、前記太陽電池から引き出した電気出力ケーブルの分岐ケーブルを電気的に接続するための分岐部を介して、前記複数個の太陽電池を直列または並列に接続して太陽光発電システムを構築するようにした屋根材一体型太陽電池モジュールにおいて、前記基幹ケーブルは正負の両極性に対応する２芯ケーブルとし、前記分岐部は、前記２芯ケーブルと分岐ケーブルとの電気的接続部および各ケーブルの分岐部導入部全体を樹脂成型により絶縁被覆してなるものとし、前記分岐部は、各ケーブルを対向する側端面部からそれぞれ導出する直方体状の樹脂成型体からなり、ケーブルの軸方向に沿った矩形状の軸断面を有し、かつ屋根下地材に接する面と反対側の上面と屋根下地材と直角な側面とでなす軸方向の少なくとも一つの稜は、傾斜面を有するものとし、前記分岐部の固定手段は、屋根瓦により前記傾斜面を介して分岐部を屋根面に押圧するものとしてなることを特徴とする（請求項３）。前記構成によれば、分岐部の基幹ケーブルに並行な端部に設けた前記傾斜面部を、屋根瓦の棟側上辺縁下部と屋根下地材との隙間に嵌め込んで固定することができ、これにより、取付工具及び金具を一切必要とせず、容易に分岐部を固定することが可能となり大幅な作業効率の向上、コストダウンが図れる。 Further, the above object can be achieved by the invention of claim 3 below. That is, a solar cell is provided on the upper surface of the roofing material block (roof tile), and a plurality of the pieces are arranged in an array and laid on the roof surface, and the basic cable for wiring is laid along the ridge side. The solar power generation system is constructed by connecting the plurality of solar cells in series or in parallel via a branch portion for electrically connecting a branch cable of the electrical output cable drawn from the solar cell. In the roof material-integrated solar battery module, the trunk cable is a two-core cable corresponding to both positive and negative polarities, and the branch portion is an electrical connection portion between the two-core cable and the branch cable and a branch portion of each cable. the entire inlet part and made with insulating coating by resin molding, the branch portion is made rectangular resin molded deriving respectively from the side end face facing the respective cable, At least one ridge in the axial direction formed by an upper surface opposite to the surface in contact with the roof base material and a side surface perpendicular to the roof base material has an inclined surface. The fixing means for the branch portion is configured to press the branch portion against the roof surface via the inclined surface by roof tiles (Claim 3 ). According to the above configuration, the inclined surface portion provided at the end parallel to the trunk cable of the branching portion can be fitted and fixed in the gap between the lower ridge side upper edge of the roof tile and the roof base material. Therefore, it is possible to easily fix the branch portion without requiring any mounting tools and metal fittings, and it is possible to greatly improve work efficiency and reduce costs.

また、前記請求項３に記載のモジュールにおいて、前記傾斜面は、前記屋根下地材に接する面と反対側の上面と屋根下地材と直角な側面とでなす軸方向の二つの稜に設け、前記矩形状の軸断面は、実質的に、矩形と台形とを組み合わせた六角形状断面としてなることを特徴とする（請求項４）。太陽光発電システムの仕様によっては、基幹ケーブルの正負の向きを逆にする、即ち分岐部の向きを上下１８０度反転させる必要性が生ずるが、この場合においても、前記請求項４の発明の構成によれば、分岐部の上下両側に傾斜面部があるので、前記傾斜面部を介しての分岐部の固定がいかなる場合にも容易に可能となる。 Further, in the module according to claim 3 , the inclined surface is provided on two ridges in an axial direction formed by an upper surface opposite to a surface in contact with the roof base material and a side surface perpendicular to the roof base material, The rectangular axial section is substantially a hexagonal section combining a rectangle and a trapezoid (claim 4 ). Depending on the specifications of the photovoltaic power generation system, it may be necessary to reverse the direction of the positive and negative of the main cable, that is, to reverse the direction of the branching portion by 180 degrees. In this case as well, the configuration of the invention of claim 4 Since there are inclined surface portions on both the upper and lower sides of the branch portion, the branch portion can be easily fixed through the inclined surface portion in any case.

この発明によれば、部品点数や施工工数の増大なしに、出力ケーブルの分岐部を確実に固定することができ、太陽電池付屋根瓦の敷設作業や配線接続作業の容易化，確実化を図り、屋根材一体型太陽電池モジュールのコスト低減を図ることができる。   According to the present invention, the branch portion of the output cable can be securely fixed without increasing the number of parts and the number of man-hours, thereby facilitating and ensuring the installation work and wiring connection work of the roof tile with solar cell. In addition, the cost of the roof material integrated solar cell module can be reduced.

次に、この発明の実施形態に関して、図１ないし図８に基いて説明する。図１は本発明の実施形態に係る屋根材一体型太陽電池モジュールの模式的構成図、図２は図１のモジュールの配線図の一例（４直列１並列）を示す図、図３は本発明に関わる参考例として示す分岐部の構成断面図、図４は本発明に関わる参考例として示す貫通穴と釘を使用した分岐部の実施態様の斜視図、図５は凹部とＬ状釘を使用した本発明の分岐部の実施態様の斜視図、図６は端部に傾斜加工を施した本発明の分岐部の実施態様の斜視図、図７は図６の分岐部を屋根瓦の棟側上辺縁下部と屋根下地材との隙間へ嵌め込んで固定した状態を示す断面図、図８は図７の一部拡大断面図である。 Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of a roof material integrated solar cell module according to an embodiment of the present invention, FIG. 2 is a diagram showing an example (4 series 1 parallel) of the module of FIG. 1, and FIG. configuration sectional view of a bifurcation showing a reference example relating to FIG. 4 is a perspective view of an embodiment of a bifurcation using the through hole and the nail shown as a reference example according to the present invention, FIG. 5 using the recess and L Jokugi perspective view of an embodiment of a bifurcation of the present invention, FIG. 6 is a perspective view of an embodiment of a bifurcation of the present invention subjected to inclined machining on the end, 7 ridge side of the roof tiles the bifurcation 6 FIG. 8 is a partially enlarged cross-sectional view of FIG. 7, and FIG. 8 is a cross-sectional view showing a state in which the upper edge of the lower edge and the roof base material are fitted and fixed.

図１および図２において、図９および図１０に示す部材と同一機能部材には同一符号を付してその詳細説明を省略する。図１において、屋根瓦２の表面に設けられた凹部に太陽電池１が配設されてなる太陽電池付屋根瓦２１が、軒先から棟に向かって水上側の太陽電池付屋根瓦２１の下側端部が水下側の太陽電池付屋根瓦２１の上辺縁部２ｂと重なるように配設され、野地板３０に敷かれたルーフィング材３１上に葺設される。屋根瓦２の上辺縁部から取り出された出力ケーブル４にはプラグ５及びソケット６が取り付けられており、隣接した太陽電池付屋根瓦２１の正極と負極の上記プラグ５とソケット６を直列接続して、図示しないパワーコンディショナーの入力電圧、一般的にはＤＣ２００Ｖの電圧を得る。   1 and 2, members having the same functions as those shown in FIGS. 9 and 10 are denoted by the same reference numerals, and detailed description thereof is omitted. In FIG. 1, a roof tile 21 with solar cells in which solar cells 1 are arranged in a recess provided on the surface of the roof tile 2 is below the roof tile 21 with solar cells on the water side from the eaves toward the ridge. The end is disposed so as to overlap the upper edge 2b of the roof tile 21 with solar cells under water, and is installed on a roofing material 31 laid on the field board 30. A plug 5 and a socket 6 are attached to the output cable 4 taken out from the upper edge of the roof tile 2, and the positive and negative plugs 5 and the socket 6 of the adjacent roof tile with solar cell 21 are connected in series. Thus, an input voltage of a power conditioner (not shown), generally a voltage of DC 200V is obtained.

また、図２の配線図に示すように、両端の太陽電池付屋根瓦２１の直列接続されていない出力ケーブル４は正極４ａ・負極4ｂ各々を、２芯ケーブルを使用して正負極を一本化した基幹ケーブル７から分岐部８を介して分岐された分岐ケーブル（正極９ａ、負極９ｂ）にそれぞれプラグ５及びソケット６によって並列に接続し、１つの太陽電池ユニットを形成している。なお、図２において、部番１０は、分岐部８内に設けた逆流ダイオードである。上記のようなユニットが複数、基幹ケーブル７に接続され、図示しないパワーコンディショナーへ配線されて交流電圧に変換される。   As shown in the wiring diagram of FIG. 2, the output cable 4 of the roof tiles 21 with solar cells at both ends is not connected in series, each of the positive electrode 4a and the negative electrode 4b, one positive and negative electrode using a two-core cable. One solar cell unit is formed by connecting the branched cable (the positive electrode 9a and the negative electrode 9b) branched from the converted basic cable 7 via the branch part 8 in parallel by the plug 5 and the socket 6, respectively. In FIG. 2, the part number 10 is a backflow diode provided in the branch part 8. A plurality of units as described above are connected to the main cable 7, wired to a power conditioner (not shown), and converted into an AC voltage.

なお、本発明で用いられる太陽電池１について以下に詳述する。太陽電池１に用いる半導体は、特に限定されるものではないが、例えば、シリコン系半導体、化合物系半導体等の材料からなり、単結晶系や多結晶系の結晶系半導体やアモルファス系半導体が挙げられる。これらの内、特に結晶系シリコン太陽電池は、高い信頼性、エネルギー変換効率等によって、屋根材一体型太陽電池として屋外用途において好適に用いられる。又、アモルファス系シリコン太陽電池は、現状では上記結晶系シリコン太陽電池に比べてエネルギー変換効率等が低いものの、低コスト薄膜系太陽電池として期待されるものである。   In addition, the solar cell 1 used by this invention is explained in full detail below. Although the semiconductor used for the solar cell 1 is not particularly limited, for example, it is made of a material such as a silicon-based semiconductor or a compound-based semiconductor, and examples thereof include a single crystal system, a polycrystalline crystal semiconductor, and an amorphous semiconductor. . Of these, crystalline silicon solar cells are particularly suitable for outdoor use as roofing material integrated solar cells due to high reliability, energy conversion efficiency, and the like. Amorphous silicon solar cells are expected as low-cost thin-film solar cells, although the energy conversion efficiency and the like are currently lower than those of the crystalline silicon solar cells.

上記太陽電池１としては、結晶系半導体、化合物系半導体やこれらの半導体とアモルファス系半導体の積層構造のセルからなる多数の素子を１枚の基板に集積したモジュールが用いられてもよいが、大面積の１枚のアモルファス系シリコン太陽電池素子からなるモジュールを用いることもできる。又、これらの太陽電池は、通常、その表面に例えば、普通又は強化ガラス、アクリル樹脂板、ＰＴＦＥ系薄膜等の透明性の高い表面保護材が積層される。   As the solar cell 1, a module in which a large number of elements composed of cells of a crystalline semiconductor, a compound semiconductor, or a stacked structure of these semiconductors and an amorphous semiconductor are integrated on a single substrate may be used. A module composed of one amorphous silicon solar cell element having an area can also be used. In addition, these solar cells are usually laminated on the surface with a highly transparent surface protective material such as ordinary or tempered glass, an acrylic resin plate, a PTFE-based thin film, and the like.

上記太陽電池がその表面に配設される屋根瓦の材料は、特に限定されるものではないが、例えば、セメント等の無機材料、アルミニウムや鉄鋼等の金属材料、ポリカーボネートや繊維強化プラスチック等の有機材料もしくはこれらを複合した基板からなるもの等が挙げられる。   The material of the roof tile on which the solar cell is disposed is not particularly limited. For example, inorganic materials such as cement, metal materials such as aluminum and steel, organic materials such as polycarbonate and fiber reinforced plastic, and the like. Examples thereof include materials and materials made of a composite substrate.

太陽電池１の好ましい構成について、さらに具体的に例示的に述べる。太陽電池１に用いる太陽電池素子としては、厚さ１０μｍから１００μｍの高分子材料フィルム基板上に非結晶シリコン薄膜などから形成された光電変換層とＡｇやＡｌ、ＺｎＯの層が電極層として形成された１枚の薄膜太陽電池を用い、上記太陽電池素子の正極及び負極の発電出力を、図示しない導電フィルムを用いて、前記出力端子ボックス１１内に集電し、出力ケーブル４に通電する。   The preferred configuration of the solar cell 1 will be described more specifically by way of example. As a solar cell element used for the solar cell 1, a photoelectric conversion layer formed of an amorphous silicon thin film or the like and a layer of Ag, Al, ZnO are formed as an electrode layer on a polymer material film substrate having a thickness of 10 μm to 100 μm. In addition, a single thin film solar cell is used, and the power generation outputs of the positive and negative electrodes of the solar cell element are collected in the output terminal box 11 using a conductive film (not shown), and the output cable 4 is energized.

また、上記太陽電池１は、例えば、厚さ３ｍｍの白板ガラス板の裏面に、約２００ｍｍ×８００ｍｍサイズの上記のような太陽電池素子を、厚さ０．３ｍｍ〜０．４ｍｍのエチレン−酢酸ビニル共重合体からなる封止材とフッ素樹脂系のバックフィルムで積層された構造とする。上記太陽電池１と屋根瓦２とは、図９において示した屋根瓦２の凹部４１、４２に例えばシリコン系接着材を流し込み、太陽電池１を嵌め込んで一体化する。また、接着材により、屋根瓦２裏面の防水を保つようにする。   In addition, the solar cell 1 includes, for example, the above-described solar cell element having a size of about 200 mm × 800 mm on the back surface of a white glass plate having a thickness of 3 mm, and ethylene-vinyl acetate having a thickness of 0.3 mm to 0.4 mm. A structure in which a sealing material made of a copolymer and a fluororesin-based back film are laminated. The solar cell 1 and the roof tile 2 are integrated by pouring, for example, a silicon-based adhesive into the recesses 41 and 42 of the roof tile 2 shown in FIG. Moreover, the waterproofing of the back surface of the roof tile 2 is maintained by an adhesive.

次に、図３の参考例について述べる。図３において、分岐部８は２芯ケーブルを使用した基幹ケーブル７に、負極側は圧着端子１２ａを介して分岐ケーブル負極９ｂへ、正極側は圧着端子１２ｂ、逆流防止ダイオード１０、圧着端子１２ｃを介して分岐ケーブル正極９ａに接続される。全ての電気的接続が完了した後に、例えばポリエチレン等の樹脂をインサート成型して、防水・絶縁構造の分岐部８を構成する。なお、図３において、８ａは後述する貫通穴である。 Next, a reference example of FIG. 3 will be described. In FIG. 3, the branch part 8 is a basic cable 7 using a two-core cable, the negative electrode side is connected to a branch cable negative electrode 9b via a crimp terminal 12a, the positive electrode side is connected to a crimp terminal 12b, a backflow prevention diode 10, and a crimp terminal 12c. To the branch cable positive electrode 9a. After all the electrical connections are completed, a resin such as polyethylene is insert-molded to form the waterproof / insulating branch portion 8. In FIG. 3, 8a is a through hole to be described later.

次に、図４の参考例の分岐部の構成について述べる。図４において、分岐部８には基幹ケーブル７と直交する端部に膨らみを持たせ分岐部８の板厚方向に貫通穴８ａを対向する位置に２箇所形成する。一列の太陽電池付屋根瓦２１の葺設完了後、配線接続を行い、棟側次列の太陽電池付屋根瓦２１を葺設する前に前記分岐部８に形成した貫通穴８ａに釘１３を通して野地板３０及びルーフィング材３１に固定する。分岐部８に形成した貫通穴８ａを２箇所に設けたのは分岐部８の取り付け方向が、太陽光発電システムの仕様により１８０度変わっても、即ち、分岐部取り付けの上下関係が逆になっても、貫通穴８の位置を同様に確保できるようにするためである。 Next, the configuration of the branch part of the reference example of FIG. 4 will be described. In FIG. 4, the branch portion 8 has a bulge at an end portion orthogonal to the main cable 7, and two through holes 8 a are formed at positions facing the thickness direction of the branch portion 8. After completing the installation of one row of roof tiles with solar cells 21, wiring connections are made, and before installing the next row of roof tiles with solar cells 21 on the building side, nails 13 are passed through the through holes 8 a formed in the branch portion 8. Fix to the field board 30 and the roofing material 31. The through holes 8a formed in the branching portion 8 are provided at two places even if the mounting direction of the branching portion 8 changes by 180 degrees depending on the specifications of the solar power generation system, that is, the vertical relationship of the branching portion mounting is reversed. However, this is because the position of the through hole 8 can be secured in the same manner.

次に、請求項１および２の発明に係る図５の分岐部の構成について述べる。図５の実施態様においては、分岐部８に基幹ケーブル７と直交する方向に凹部８ｂを２箇所設け、Ｌ状釘１４の凸部１４ａが前記分岐部８の凹部８ｂに勘合するようにして野地板３０及びルーフィング材３１に固定する。なお、図５の分岐部の構成を断面図で示すと、概ね図３と同様であるが、図３における貫通穴８ａとその周囲の突出部分は不要である点が異なる。 Next, the structure of the branching section of FIG. 5 according to the inventions of claims 1 and 2 will be described. In the embodiment of FIG. 5, two concave portions 8 b are provided in the branch portion 8 in the direction orthogonal to the main cable 7, and the convex portion 14 a of the L-shaped nail 14 is engaged with the concave portion 8 b of the branch portion 8. Fix to the main plate 30 and the roofing material 31. The cross-sectional view of the structure of the branching portion in FIG. 5 is generally the same as that in FIG. 3 except that the through hole 8a and the protruding portion around it in FIG. 3 are unnecessary.

次に、請求項３の発明に係る図６の分岐部の構成および同分岐部を屋根瓦で固定する構成を示す図７および図８について述べる。図６の実施態様においては、分岐部８に基幹ケーブル７と並行で且つ両端に１０°〜４５°の傾斜面を有する傾斜部８ｃを設ける。図７，８に示すように、一列の太陽電池付屋根瓦２１の葺設及び配線接続完了後、野地板３０及びルーフィング材３１上で分岐部８を滑らせて、屋根材の棟側上辺縁下部２ａとの隙間に分岐部８の傾斜部８ｃを嵌め込み、棟側から分岐部８を叩いて、傾斜部８ｃを瓦の上辺縁下部２ａ部に押し込んで、分岐部を固定する。分岐部８の両側に傾斜部８ｃを設けた理由は、前述のように、分岐部８の方向が１８０度変わっても、傾斜部８ｃが屋根材の棟側上辺縁下部２ａに対応できるようにするためである。 Next, FIG. 7 and FIG. 8 which show the structure of the branch part of FIG. 6 which concerns on invention of Claim 3 , and the structure which fixes the branch part with a roof tile are described. In the embodiment of FIG. 6, the branch portion 8 is provided with an inclined portion 8 c that is parallel to the main cable 7 and has inclined surfaces of 10 ° to 45 ° at both ends. As shown in FIGS. 7 and 8, after the installation of the roof tiles with solar cells 21 and the wiring connection is completed, the branch part 8 is slid on the field board 30 and the roofing material 31, and the roof edge on the ridge side of the roof material The inclined portion 8c of the branching portion 8 is fitted into the gap with the lower portion 2a, the branching portion 8 is hit from the ridge side, and the inclined portion 8c is pushed into the lower edge 2a portion of the roof tile to fix the branching portion. The reason why the inclined portions 8c are provided on both sides of the branching portion 8 is that, as described above, even if the direction of the branching portion 8 changes by 180 degrees, the inclined portion 8c can correspond to the lower edge 2a on the ridge side of the roofing material. It is to do.

上記本発明の実施態様によれば、太陽電池付屋根瓦の葺設工数を著しく低減し、かつ太陽電池付屋根瓦の配線接続作業が極めて迅速・容易且つ確実に実施でき、太陽光発電システムのコストを大幅に低減させることができる。   According to the embodiment of the present invention, the number of man-hours for installing the roof tile with solar cells can be remarkably reduced, and the wiring connection work of the roof tile with solar cells can be carried out extremely quickly, easily, and reliably. Cost can be greatly reduced.

本発明の実施形態に係る屋根材一体型太陽電池モジュールの模式的構成図。The typical block diagram of the roofing material integrated solar cell module which concerns on embodiment of this invention. 図１のモジュールの配線図の一例（４直列１並列の場合）を示す図。The figure which shows an example (in the case of 4 series 1 parallel) of the wiring diagram of the module of FIG. 本発明に関わる参考例として示す分岐部の構成断面図。Sectional drawing of the structure of the branch part shown as a reference example in connection with this invention. 本発明に関わる参考例として示す貫通穴と釘を使用した分岐部の斜視図。 Oblique view of bifurcation using the through hole and the nail shown as a reference example according to the present invention. 凹部とＬ状釘を使用した本発明の分岐部の実施態様の斜視図。The perspective view of the embodiment of the branch part of this invention using a recessed part and an L-shaped nail. 端部に傾斜加工を施した本発明の異なる分岐部の実施態様の斜視図。The perspective view of the embodiment of the different branch part of this invention which gave the inclination process to the edge part. 図６の分岐部を屋根瓦の棟側上辺縁下部と屋根下地材との隙間へ嵌め込んで固定した状態を示す断面図。Sectional drawing which shows the state which fitted and fixed the branch part of FIG. 6 in the clearance gap between the ridge side upper edge lower part of a roof tile, and a roof base material. 図７の一部拡大断面図。The partially expanded sectional view of FIG. 従来の太陽電池付屋根瓦の構成の一例の分解斜視図。The disassembled perspective view of an example of the structure of the conventional roof tile with a solar cell. 図９の太陽電池付屋根瓦の敷設および配線構造の説明図。Explanatory drawing of laying | laying and wiring structure of the roof tile with a solar cell of FIG.

１ 太陽電池
２ 屋根瓦
４ 出力ケーブル
５ プラグ
６ ソケット
７ 基幹ケーブル
８ 分岐部
８ａ 貫通穴
８ｂ 凹部
８ｃ 傾斜部
９ａ，９ｂ 分岐ケーブル
１０ 逆流ダイオード
１１ 端子ボックス
１３ 釘
１４ Ｌ字状釘
１４ａ 凸部
２１ 太陽電池付屋根瓦
３０ 野地板
３１ ルーフィング材
DESCRIPTION OF SYMBOLS 1 Solar cell 2 Roof tile 4 Output cable 5 Plug 6 Socket 7 Core cable 8 Branch part 8a Through hole 8b Concave part 8c Inclination part 9a, 9b Branch cable 10 Backflow diode 11 Terminal box 13 Nail 14 L-shaped nail 14a Convex part 21 Sun Roof tile with batteries 30 Field plate 31 Roofing material

Claims (4)

屋根材ブロック（屋根瓦）の上面に太陽電池を設けた構成になり、その複数枚をアレイ状に並べて屋根面に横葺きし、その棟側に沿って敷設した配線用の基幹ケーブルに、前記太陽電池から引き出した電気出力ケーブルの分岐ケーブルを電気的に接続するための分岐部を介して、前記複数個の太陽電池を直列または並列に接続して太陽光発電システムを構築するようにした屋根材一体型太陽電池モジュールにおいて、
前記分岐部は、屋根下地材へ直接固定することを可能とした固定手段を備え、前記分岐部の固定手段は、前記屋根瓦を屋根下地材へ固定するためのＬ字状釘と、このＬ字状釘の一辺に設けた凸部に係合するように、前記分岐部における固定部に設けた凹部とからなることを特徴とする屋根材一体型太陽電池モジュール。 It becomes the structure which provided the solar cell on the upper surface of the roofing material block (roof tile), arranged a plurality of them in an array and laid on the roof surface, and the basic cable for wiring laid along the ridge side, A roof in which a solar power generation system is constructed by connecting the plurality of solar cells in series or in parallel via a branch portion for electrically connecting a branch cable of an electrical output cable drawn from the solar cell. In the material-integrated solar cell module,
The branch portion includes fixing means that can be directly fixed to the roof base material. The fixing means of the branch portion includes an L-shaped nail for fixing the roof tile to the roof base material, and the L-shaped nail. shaped so as to engage the convex portion provided on one side of the nail, roofing material integrated type solar cell module, wherein Rukoto such and a recess formed in the fixed portion of the branch portion. 請求項１に記載のモジュールにおいて、前記基幹ケーブルは正負の両極性に対応する２芯ケーブルとし、前記分岐部は、前記２芯ケーブルと分岐ケーブルとの電気的接続部および各ケーブルの分岐部導入部全体を樹脂成型により絶縁被覆してなるものとすることを特徴とする屋根材一体型太陽電池モジュール。   2. The module according to claim 1, wherein the backbone cable is a two-core cable corresponding to both positive and negative polarities, and the branch portion includes an electrical connection portion between the two-core cable and the branch cable, and a branch portion introduction of each cable. A roof material-integrated solar cell module, wherein the entire part is formed by insulating coating by resin molding. 屋根材ブロック（屋根瓦）の上面に太陽電池を設けた構成になり、その複数枚をアレイ状に並べて屋根面に横葺きし、その棟側に沿って敷設した配線用の基幹ケーブルに、前記太陽電池から引き出した電気出力ケーブルの分岐ケーブルを電気的に接続するための分岐部を介して、前記複数個の太陽電池を直列または並列に接続して太陽光発電システムを構築するようにした屋根材一体型太陽電池モジュールにおいて、
前記基幹ケーブルは正負の両極性に対応する２芯ケーブルとし、前記分岐部は、前記２芯ケーブルと分岐ケーブルとの電気的接続部および各ケーブルの分岐部導入部全体を樹脂成型により絶縁被覆してなるものとし、
前記分岐部は、各ケーブルを対向する側端面部からそれぞれ導出する直方体状の樹脂成型体からなり、ケーブルの軸方向に沿った矩形状の軸断面を有し、かつ屋根下地材に接する面と反対側の上面と屋根下地材と直角な側面とでなす軸方向の少なくとも一つの稜は、傾斜面を有するものとし、前記分岐部の固定手段は、屋根瓦により前記傾斜面を介して分岐部を屋根面に押圧するものとしてなることを特徴とする屋根材一体型太陽電池モジュール。 It becomes the structure which provided the solar cell on the upper surface of the roofing material block (roof tile), arranged a plurality of them in an array and laid on the roof surface, and the basic cable for wiring laid along the ridge side, A roof in which a solar power generation system is constructed by connecting the plurality of solar cells in series or in parallel via a branch portion for electrically connecting a branch cable of an electrical output cable drawn from the solar cell. In the material-integrated solar cell module,
The backbone cable is a two-core cable corresponding to both positive and negative polarities, and the branch portion is formed by insulating and covering the electrical connection portion between the two-core cable and the branch cable and the entire branch portion introduction portion of each cable by resin molding. And
The branch portion is formed of a rectangular parallelepiped resin molded body that leads each cable from opposing side end surface portions, has a rectangular axial cross section along the axial direction of the cable, and a surface in contact with the roof base material At least one ridge in the axial direction formed by the upper surface on the opposite side and the side surface perpendicular to the roof base material has an inclined surface, and the fixing means for the branch portion is a branch portion via the inclined surface by a roof tile. A roof material-integrated solar battery module, wherein the roof material-integrated solar battery module is pressed against the roof surface. 請求項３に記載のモジュールにおいて、前記傾斜面は、前記屋根下地材に接する面と反対側の上面と屋根下地材と直角な側面とでなす軸方向の二つの稜に設け、前記矩形状の軸断面は、実質的に、矩形と台形とを組み合わせた六角形状断面としてなることを特徴とする屋根材一体型太陽電池モジュール。 The module according to claim 3 , wherein the inclined surface is provided on two ridges in an axial direction formed by an upper surface opposite to a surface in contact with the roof base material and a side surface perpendicular to the roof base material. The roof material integrated solar cell module, wherein the axial cross section is substantially a hexagonal cross section combining a rectangle and a trapezoid.
JP2004075713A 2004-03-17 2004-03-17 Roof material integrated solar cell module Expired - Fee Related JP4326990B2 (en)

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