JP4103299B2 - Photovoltaic power generation apparatus and method of attaching the same - Google Patents

Photovoltaic power generation apparatus and method of attaching the same Download PDF

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JP4103299B2
JP4103299B2 JP2000114171A JP2000114171A JP4103299B2 JP 4103299 B2 JP4103299 B2 JP 4103299B2 JP 2000114171 A JP2000114171 A JP 2000114171A JP 2000114171 A JP2000114171 A JP 2000114171A JP 4103299 B2 JP4103299 B2 JP 4103299B2
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JP2001295438A (en
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満 藤田
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Fuji Electric Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/30—Arrangement of stationary mountings or supports for solar heat collector modules using elongate rigid mounting elements extending substantially along the supporting surface, e.g. for covering buildings with solar heat collectors
    • F24S25/33—Arrangement of stationary mountings or supports for solar heat collector modules using elongate rigid mounting elements extending substantially along the supporting surface, e.g. for covering buildings with solar heat collectors forming substantially planar assemblies, e.g. of coplanar or stacked profiles
    • 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
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S25/61—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules for fixing to the ground or to building structures
    • F24S25/615—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules for fixing to the ground or to building structures for fixing to protruding parts of buildings, e.g. to corrugations or to standing seams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • 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
    • 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
    • Y02B10/20—Solar thermal
    • 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)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Photovoltaic Devices (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は光エネルギーを電気エネルギーに変換する太陽光発電装置に関し、特にフィルム系の太陽電池を用いた太陽光発電装置に関する。
【０００２】
【従来の技術】
近年、地球規模での環境問題への関心の高まりに伴い、光エネルギーを電気エネルギーに変換する太陽光発電装置の実用化が進められている。太陽光発電装置は、光電変換を行う太陽電池及びそれを支える支柱等によって構成され、太陽光を効率よく受光できる建物の屋上等の野外に設置される。
【０００３】
太陽電池の構成としては、表面を保護ガラスで覆った構造が一般的なものあったが、近年、耐熱フィルム基板上にアモルファスシリコン膜を積層した太陽電池セルを鋼板に張り合せ、表面をフッ素系樹脂フィルムで覆ったフィルム系の太陽電池の実用化も進められている。このフィルム系の太陽電池は、フッ素系樹脂フィルムを用いてその表面を覆うこととしているため、その重量を軽量化でき、また、フレキシブル性が高く、衝撃に強い等の利点もあり、今後様々な用途に応用されていくことが期待される。
【０００４】
【発明が解決しようとする課題】
しかし、フィルム系の太陽電池は熱膨張率が高く、このフィルム系の太陽電池を、太陽熱によって高温に達する屋根等に固定した場合、その熱によって太陽電池全体が膨張し、この膨張により、屋根等との固定部から太陽電池に圧力が加わり、太陽電池自体が変形してしまうという問題点がある。
【０００５】
また、フィルム系の太陽電池はフレキシブル性が高いため、風が強い屋外等において取り付けを行う場合、その取り扱いが困難であるという問題点もある。
本発明はこのような点に鑑みてなされたものであり、使用時に太陽電池が高温に達し、太陽電池が膨張した場合であっても、その膨張によって生じる圧力によって太陽電池が変形してしまうことを防止することが可能な太陽光発電装置を提供することを目的とする。
【０００６】
また、本発明の他の目的は、フィルム系の太陽電池が用いられた場合であっても、取り付け施工を容易に行うことが可能な太陽光発電装置を提供することである。
【０００７】
【課題を解決するための手段】
本発明では上記課題を解決するために、光エネルギーを電気エネルギーに変換する太陽光発電装置において、上部に配置溝を有し、折板屋根に第１のボルトによってねじ止めされる固定台と、縁部分に折り返し部を有し、前記折り返し部の少なくとも一部が前記配置溝の内部に配置された状態で、前記固定台の上部に配置される太陽電池と、前記太陽電池の上面側に配置され、前記固定台に第２のボルトによってねじ止めされる上面カバーと、を備え、前記固定台及び前記上面カバーは、前記第２のボルトによるねじ止めのためのねじ止め穴を有し、前記太陽電池は、前記第２のボルトの断面径に対して大きく形成され前記第２のボルトが挿通される取り付け穴を有し、前記固定台の上部に配置された前記太陽電池と前記上面カバーとの間に空間的余裕を持たせるように、前記上面カバーのねじ止め穴に前記第２のボルトの一端側が固定され、前記太陽電池の前記取り付け穴に前記第２のボルトが挿通され、前記固定台のねじ止め穴に前記第２のボルトの他端側が固定されており、前記折り返し部を前記配置溝の内部に配置した状態で、前記折り返し部と前記配置溝の側壁との間に空間的余裕を持たせるように、前記配置溝の幅寸法が前記折り返し部の厚み寸法よりも大きく設定されていることを特徴とする太陽光発電装置が提供される。
【０００８】
ここで、固定台は、折板屋根にねじ止めされ、太陽電池は、固定台の配置溝の内部に折り返し部を配置した状態で固定台の上部に配置され、上面カバーは、固定台にねじ止めされる。
【００１１】
また、光エネルギーを電気エネルギーに変換する太陽光発電装置の取り付け方法において、固定台を、折板屋根に第１のボルトによってねじ止めし、前記固定台の上部に、縁部分に折り返し部を有する太陽電池を、前記折り返し部の少なくとも一部を前記固定台の配置溝の内部に配置した状態で配置し、前記太陽電池の上面側に、上面カバーを、前記固定台に第２のボルトによってねじ止めした状態で配置し、前記上面カバーは、前記固定台の上部に配置された前記太陽電池との間に空間的余裕を持たせるように、前記上面カバーのねじ止め穴に前記第２のボルトの一端側を固定し、前記太陽電池に形成され前記第２のボルトの断面径に対して大きく形成されている取り付け穴に前記第２のボルトを挿通し、前記固定台のねじ止め穴に前記第２のボルトの他端側を固定した状態で配置し、前記配置溝は、前記折り返し部を前記配置溝の内部に配置した状態で、前記折り返し部と前記配置溝の側壁との間に空間的余裕を持たせるように、前記配置溝の幅寸法が前記折り返し部の厚み寸法よりも大きく設定されていることを特徴とする太陽光発電装置の取り付け方法が提供される。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
図１は、本形態における太陽光発電装置１０の構成を示した組み立て図であり、図２は、組み立て後の太陽光発電装置１０の構成を示した斜視図である。
【００１３】
太陽光発電装置１０は、固定台を構成する基礎固定台１５ａ、１５ｂ及び下台１４ａ〜１４ｃ、光電変換を行うフィルム系の太陽電池である太陽電池１２ａ、１２ｂ、太陽電池１２ａ、１２ｂの上面に配置され、下台１４ａ〜１４ｃにねじ止めされる上面カバー１１ａ〜１１ｃ、上面カバー１１ａ〜１１ｃを下台１４ａ〜１４ｃにねじ止めするボルト１３ａ〜１３ｈ、及び下台１４ａ〜１４ｃを基礎固定台１５ａ、１５ｂにねじ止めするボルト１６ａ〜１６ｋによって構成され、ボルト２１ａ〜２１ｌにより、折板屋根２０にねじ止めされる。
【００１４】
基礎固定台１５ａ、１５ｂは、長方形の板を、互いに平行な２本の折り返し線において、同一方向に９０°ずつ折り返し、この折り返し線に垂直な断面形状がコの字形となるように形成されたコの字形の構造体であり、そのコの字形の上部及び下部に当たる部分にねじ止めのためのねじ止め穴を有している。
【００１５】
下台１４ａ〜１４ｃは、長方形の板を、互いに平行な２本の折り返し線において、同一方向に９０°ずつ折り返し、これにより形成される断面形状がコの字形の構造体を、２つずつ背中合わせに張り合わせたような形状を有している。このコの字形の構造体の張り合せは、相互の張り合せ部分に隙間を持たせて行われ、この隙間が、下台１４ａ〜１４ｃの上部に構成される配置溝１４ａａ、１４ｂａ、１４ｃａとなる。また、下台１４ａ〜１４ｃの上下部分にもねじ止め穴が形成される。
【００１６】
上面カバー１１ａ〜１１ｃは、直方体の板形状であり、ねじ止めのためのねじ止め穴を有している。
基礎固定台１５ａ、１５ｂ、下台１４ａ〜１４ｃ、上面カバー１１ａ〜１１ｃに用いる材料としては、風、雪等の屋外環境に耐えうるだけの機械的強度、及び長期間の屋外使用に耐えうるだけの信頼性を有する材料であれば、ステンレス等、特に制限なく使用できる。
【００１７】
太陽電池１２ａ、１２ｂは、ステンレス基板上にアモルファスシリコン膜を積層した太陽電池セルを鋼板に張り合せ、表面をフッ素系樹脂フィルムで覆った長方形の板形状を有している。太陽電池１２ａ、１２ｂの縁部分は、各辺に平行かつ同一方向に９０°で折り返され、これにより、各辺ごとに折り返し部１２ａｅ、１２ａｆ、１２ｂｅ、１２ｂｆが構成される。この折り返し部１２ａｅ、１２ａｆ、１２ｂｅ、１２ｂｆの詳細については後述する。また、太陽電池１２ａ、１２ｂには、ボルト１３ａ〜１３ｈの断面径に対し、形状的に余裕を持たせた取り付け穴１２ａａ〜１２ａｄ、１２ｂａ〜１２ｂｄが形成される。
【００１８】
次に、太陽光発電装置１０全体の配置構成について説明する。
太陽光発電装置１０が設置されることとなる折板屋根２０は、波型に形成された凹凸部を有している。太陽光発電装置１０の折板屋根２０への取り付けは、基礎固定台１５ａ、１５ｂを、折板屋根２０が有する凹凸と直角になるように配置し、この凹凸部の凸部分上部に基礎固定台１５ａ、１５ｂの下部を、ボルト２１ｈ〜２１ｌによってねじ止め固定することにより行われる。ここで、ボルト２１ｈ〜２１ｌは、折板屋根２０を図示していない屋根筐体に固定するために使用されているものであり、それらを流用することにより、基礎固定台１５ａ、１５ｂの固定を行う。
【００１９】
折板屋根２０の上部にねじ止め固定された基礎固定台１５ａ、１５ｂのさらに上部には、下台１４ａ〜１４ｃが基礎固定台１５ａ、１５ｂと垂直に配置され、この下台１４ａ〜１４ｃの下部は、基礎固定台１５ａ、１５ｂの上部に、ボルト１６ａ〜１６ｋによってそれぞれねじ止め固定される。なお、ここでの下台１４ａ〜１４ｃの基礎固定台１５ａ、１５ｂへの取り付けは、下台１４ａ〜１４ｃが太陽電池１２ａ、１２ｂの縁部分を保持できるように行われる。
【００２０】
基礎固定台１５ａ、１５ｂの上部にねじ止め固定された下台１４ａ〜１４ｃは、それぞれが有する配置溝１４ａａ、１４ｂａ、１４ｃａを上部に配置することとなり、太陽電池１２ａ、１２ｂは、それらが有する折り返し部１２ａｅ、１２ａｆ、１２ｂｅ、１２ｂｆを配置溝１４ａａ、１４ｂａ、１４ｃａの内部に配置した状態で、下台１４ａ〜１４ｃの上部に配置されることとなる。
【００２１】
太陽電池１２ａ、１２ｂの上部には、太陽電池１２ａ、１２ｂの受光部を覆わないような位置に上面カバー１１ａ〜１１ｃが配置され、各上面カバー１１ａ〜１１ｃは、ボルト１３ａ〜１３ｈによって下台１４ａ〜１４ｃにねじ止め固定される。ここでのねじ止め固定は、太陽電池１２ａ、１２ｂを、上面カバー１１ａ〜１１ｃと下台１４ａ〜１４ｃとの間に挟み込み、太陽電池１２ａ、１２ｂの取り付け穴１２ａａ〜１２ａｄ、１２ｂａ〜１２ｂｄに、ボルト１３ａ〜１３ｈを通過させた状態で行われるが、このねじ止めによって太陽電池１２ａ、１２ｂが強固に固定されることはない。このように、太陽電池１２ａ、１２ｂを強固に固定しないことにより、太陽電池１２ａ、１２ｂが高温に熱せられ膨張した場合であっても、太陽電池１２ａ、１２ｂの固定部から太陽電池１２ａ、１２ｂに無理な力が加わることを回避することができる。なお、この詳細構成については後述する。
【００２２】
次に、太陽電池の配置構成の詳細について説明する。
図３は、太陽電池１２ａの構成を示した平面図であり、図４はその断面図である。ここで、図４の（ａ）は、図３に示した太陽電池１２ａのＡ−Ａ断面図であり、図４の（ｂ）は、そのＢ−Ｂ断面図である。
【００２３】
前述したように、太陽電池１２ａは、取り付け穴１２ａａ〜１２ａｄを有している。各取り付け穴１２ａａ〜１２ａｄは、太陽電池１２ａの受光部１２ａｉを避けた位置に構成され、ボルト１３ａ〜１３ｈの断面径に対して余裕を持たせた大きさで構成される。また、取り付け穴１２ａａ〜１２ａｄの形状は、円、楕円、四角等どのようなものであってもよいが、太陽電池１２ａの長手方向に長い楕円、長方形等であることが、より望ましい。太陽電池１２ａが熱せられた際の太陽電池１２ａの膨張幅は、長手方向の方が大きく、その膨張分を吸収するだけの空間が必要だからである。
【００２４】
また、前述したように、太陽電池１２ａは、折り返し部１２ａｅ〜１２ａｈを有している。折り返し部１２ａｅ〜１２ａｈは、太陽電池１２ａの４辺を同一方向に９０°だけ折り返した部分であり、このように折り返し部１２ａｅ〜１２ａｈを設けることによって、太陽電池１２ａに、腰を持たせ、太陽電池１２ａの取り付け施工作業を容易にすることができる。
【００２５】
図５は、太陽電池１２ａ、１２ｂが、上面カバー１１ｂと下台１４ｂとによって挟み込まれた様子を示した平面図であり、図６は、図５のＣ−Ｃ断面図を、図７は、図５のＤ−Ｄ断面図をそれぞれ示している。
【００２６】
図５〜図７に示すように、下台１４ｂの上部には、太陽電池１２ａ、１２ｂが、その折り返し部１２ａｆ、１２ｂｅを配置溝１４ｂａの内部に配置した状態で配置されている。ここで、図６に示すように、配置溝１４ｂａの内部に配置されている折り返し部１２ａｆ、１２ｂｅは、配置溝１４ｂａの隙間に対し、空間的に余裕を持たせて配置されており、この配置溝１４ｂａによって太陽電池１２ａ、１２ｂが固定されることはない。また、図７に示すように、折り返し部１２ａｇ、１２ａｈは、その内側部分が下台１４ｂの縁部分に対し、空間的に余裕を持たせて配置されており、この折り返し部１２ａｇ、１２ａｈによって下台１４ｂの縁部分に太陽電池１２ａが固定されることはない。さらに、図６、図７に示すように、上面カバー１１ｂ及び下台１４ｂは、太陽電池１２ａを上下方向から空間的に余裕を持たせて挟み込んでいるため、上面カバー１１ｂ及び下台１４ｂによって太陽電池１２ａが固定されることはない。また、取り付け穴１２ａａ〜１２ａｄ、１２ｂａ〜１２ｂｄは、ボルト１３ａ〜１３ｈの径に対し、空間的に余裕を持たせて構成されているため、取り付け穴１２ａａ〜１２ａｄ、１２ｂａ〜１２ｂｄにより、太陽電池１２ａ、１２ｂが固定されることはない。
【００２７】
このように、本形態では、折板屋根に基礎固定台１５ａ、１５ｂをねじ止め固定し、基礎固定台１５ａ、１５ｂの上部に下台１４ａ〜１４ｃをねじ止め固定し、下台１４ａ〜１４ｃの配置溝１４ａａ〜１４ｃａ内部に折り返し部１２ａｅ、１２ａｆ、１２ｂｅ、１２ｂｆを配置した状態で、下台１４ａ〜１４ｃの上部に太陽電池１２ａ、１２ｂを配置し、さらにその上部に配置した上面カバー１１ａ〜１１ｃを下台１４ａ〜１４ｃにねじ止め固定することとしたため、太陽電池１２ａ、１２ｂが直接固定されることはなく、使用時に太陽電池１２ａ、１２ｂが高温に達し、太陽電池１２ａ、１２ｂが膨張した場合であっても、その膨張によって固定部から太陽電池１２ａ、１２ｂに圧力が加わり、太陽電池１２ａ、１２ｂが変形してしまうことを防止することが可能となる。
【００２８】
また、太陽電池１２ａ、１２ｂに折り返し部を設けることとしたため、太陽電池１２ａ、１２ｂに腰を持たせることができ、太陽電池１２ａ、１２ｂの取り付け施工を容易に行うことが可能となる。
【００２９】
なお、本形態では太陽電池としてフィルム系の太陽電池を用いることとしたが、特にそれに限定されるものではなく、その他の構成の太陽電池であってもよい。
【００３０】
また、本形態では、下台１４ａ〜１４ｃの配置溝１４ａａ〜１４ｃａ内部に折り返し部１２ａｅ、１２ａｆ、１２ｂｅ、１２ｂｆを配置した状態で、下台１４ａ〜１４ｃの上部に太陽電池１２ａ、１２ｂを配置し、さらにその上部に配置した上面カバー１１ａ〜１１ｃを下台１４ａ〜１４ｃにねじ止め固定することとしたが、ガラス基板等を用いたフレキシブル性が低い太陽電池を用いる場合、図８に示すような押さえ機構３１ａ、３１ｂ、３２によって太陽電池３０、３０ａ、３０ｂを保持することとしてもよい。ここで、図８の（ａ）では、段違いに構成した２平面を平行に配置し、それらを接続することにより押さえ機構３１ａ、３１ｂを構成し、押さえ機構３１ａ、３１ｂを基礎固定台１５ａの上部にねじ止め固定し、押さえ機構３１ａ、３１ｂの内側部分と、基礎固定台１５ａの上面部分との間に太陽電池３０を、余裕を持たせて配置し、これにより太陽電池３０の保持を行っている。また、図８の（ｂ）では、コの字形の先端部分を両側に９０°ずつ折り返すことによって押さえ機構３２を構成し、その押さえ機構３２を基礎固定台１５ａの上部にねじ止め固定し、押さえ機構３２の折り返し部の下部と、基礎固定台１５ａの上面との間に太陽電池３０ａ、３０ｂを、余裕を持たせて配置し、これにより太陽電池３０の保持を行っている。
【００３１】
さらに、本形態では、太陽電池１２ａ、１２ｂに取り付け穴を形成することとしたが、取り付け穴を構成しない太陽電池を使用することとしてもよい。この場合、上面カバー１１ａ〜１１ｃの下台１４ａ〜１４ｃへのねじ止め固定は、太陽電池の縁の外側部分をボルトによって固定することにより行うこととなる。
【００３２】
【発明の効果】
以上説明したように本発明では、折板屋根に固定台をねじ止め固定し、固定台の配置溝内部に折り返し部を配置した状態で、固定台の上部に太陽電池を配置し、さらにその上部に配置した上面カバーを固定台にねじ止め固定することとしたため、太陽電池が直接固定されることはなく、使用時に太陽電池が高温に達し、太陽電池が膨張した場合であっても、その膨張によって固定部から太陽電池に圧力が加わり、太陽電池が変形してしまうことを防止することが可能となる。
【００３３】
また、太陽電池に折り返し部を設けることとしたため、太陽電池に腰を持たせることができ、太陽電池１の取り付け施工を容易に行うことが可能となる。
【図面の簡単な説明】
【図１】太陽光発電装置の構成を示した組み立て図である。
【図２】組み立て後の太陽光発電装置の構成を示した斜視図である。
【図３】太陽電池の構成を示した平面図である。
【図４】図３に示した太陽電池の断面図である。
【図５】太陽電池が、上面カバーと下台とによって挟み込まれた様子を示した平面図である。
【図６】図５のＣ−Ｃ断面図である。
【図７】図５のＤ−Ｄ断面図である。
【図８】押さえ機構によって太陽電池を保持した構成を示した斜視図である。
【符号の説明】
１０ 太陽光発電装置
１１ａ〜１１ｃ 上面カバー
１２ａ、１２ｂ 太陽電池
１２ａｂ〜１２ａｄ、１２ｂａ〜１２ｂｄ 取り付け穴
１２ａｅ〜１２ａｈ、１２ｂｅ、１２ｂｆ 折り返し部
１４ａ〜１４ｃ 下台
１４ａａ〜１４ｃａ 配置溝
１５ａ、１５ｂ 基礎固定台
２０ 折板屋根
３０、３０ａ、３０ｂ 太陽電池
３１ａ、３１ｂ、３２ 押さえ機構[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a photovoltaic power generation apparatus that converts light energy into electrical energy, and more particularly to a photovoltaic power generation apparatus that uses a film-type solar cell.
[0002]
[Prior art]
In recent years, with the growing interest in environmental problems on a global scale, the practical use of solar power generation devices that convert light energy into electrical energy has been promoted. A solar power generation device is composed of a solar cell that performs photoelectric conversion, a support column that supports the solar cell, and the like, and is installed outdoors such as a rooftop of a building that can efficiently receive sunlight.
[0003]
As a structure of the solar cell, a structure in which the surface is covered with a protective glass was common, but recently, a solar cell in which an amorphous silicon film is laminated on a heat-resistant film substrate is bonded to a steel plate, and the surface is fluorine-based. Commercialization of a film-type solar cell covered with a resin film is also in progress. This film-based solar cell uses a fluororesin film to cover its surface, so its weight can be reduced, and it has advantages such as high flexibility and resistance to impact. It is expected to be applied to applications.
[0004]
[Problems to be solved by the invention]
However, the film-type solar cell has a high coefficient of thermal expansion. When this film-type solar cell is fixed to a roof or the like that reaches a high temperature by solar heat, the entire solar cell expands due to the heat, and this expansion causes a roof or the like. There is a problem in that pressure is applied to the solar cell from the fixed portion and the solar cell itself is deformed.
[0005]
In addition, since the film-type solar cell has high flexibility, there is a problem that it is difficult to handle the film-type solar cell when it is attached outdoors where wind is strong.
The present invention has been made in view of such points, and even when the solar cell reaches a high temperature during use and the solar cell expands, the solar cell is deformed by the pressure generated by the expansion. It aims at providing the solar power generation device which can prevent.
[0006]
Another object of the present invention is to provide a solar power generation apparatus that can be easily installed even when a film-type solar cell is used.
[0007]
[Means for Solving the Problems]
In the present invention, in order to solve the above-mentioned problem, in a photovoltaic power generation apparatus that converts light energy into electric energy, a fixing base that has an arrangement groove on the upper part and is screwed to the folded plate roof by a first bolt ; A solar cell disposed at the upper part of the fixed base in a state in which a folded portion is provided at an edge portion and at least a part of the folded portion is disposed in the arrangement groove, and disposed on the upper surface side of the solar cell. And an upper surface cover screwed to the fixing base with a second bolt, and the fixing base and the upper surface cover have screw holes for screwing with the second bolt, The solar cell has a mounting hole that is formed to be larger than the cross-sectional diameter of the second bolt and through which the second bolt is inserted, and the solar cell and the upper surface cover that are disposed at the upper part of the fixing base. Between One end side of the second bolt is fixed to the screwing hole of the upper surface cover so as to have a sufficient margin, the second bolt is inserted into the mounting hole of the solar cell, and the screw of the fixing base The other end side of the second bolt is fixed to the stop hole, and a space is provided between the folded portion and the side wall of the placement groove in a state where the turned portion is disposed in the placement groove. Thus, a solar power generation device is provided in which a width dimension of the arrangement groove is set larger than a thickness dimension of the folded portion .
[0008]
Here, the fixing base is screwed to the folded plate roof, the solar cell is arranged at the upper part of the fixing base with the folded portion arranged inside the arrangement groove of the fixing base, and the upper surface cover is screwed to the fixing base. Stopped.
[0011]
Moreover, in the attachment method of the solar power generation device which converts light energy into electrical energy, the fixing base is screwed to the folded plate roof with a first bolt, and a folded portion is provided at an edge portion at the upper portion of the fixing base. The solar cell is disposed in a state where at least a part of the folded portion is disposed inside the disposition groove of the fixing base, and an upper surface cover is provided on the upper surface side of the solar battery, and the fixing base is screwed with a second bolt. The second bolt is inserted into the screw hole of the upper surface cover so that a space is provided between the upper surface cover and the solar cell disposed on the upper part of the fixed base. One end side of the fixing bolt is fixed, the second bolt is inserted into a mounting hole formed in the solar cell and formed to be larger than a cross-sectional diameter of the second bolt, and the fixing bolt is screwed into the screw hole. First The other end of the bolt is fixed, and the arrangement groove has a space margin between the turn-up portion and the side wall of the arrangement groove in a state where the turn-up portion is arranged inside the placement groove. A solar power generation apparatus mounting method is provided in which a width dimension of the arrangement groove is set larger than a thickness dimension of the folded portion .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an assembly diagram illustrating a configuration of a solar power generation device 10 according to the present embodiment, and FIG. 2 is a perspective view illustrating a configuration of the solar power generation device 10 after assembly.
[0013]
The solar power generation device 10 is disposed on the upper surfaces of the base fixing bases 15a and 15b and the lower bases 14a to 14c constituting the fixing base, the solar cells 12a and 12b, which are film-type solar cells that perform photoelectric conversion, and the solar cells 12a and 12b. The upper covers 11a to 11c screwed to the lower bases 14a to 14c, the bolts 13a to 13h for screwing the upper cover 11a to 11c to the lower bases 14a to 14c, and the lower bases 14a to 14c to the base fixing bases 15a and 15b are screwed. It comprises bolts 16a to 16k to be fastened, and is screwed to the folded plate roof 20 with bolts 21a to 21l.
[0014]
The base fixing bases 15a and 15b were formed so that a rectangular plate was folded 90 degrees in the same direction at two folding lines parallel to each other, and the cross-sectional shape perpendicular to the folding lines was a U-shape. It is a U-shaped structure, and has a screw-fastening hole for screwing in a portion corresponding to an upper part and a lower part of the U-shaped structure.
[0015]
The lower bases 14a to 14c fold a rectangular plate 90 degrees in the same direction at two folding lines parallel to each other, and a structure with a U-shaped cross section formed thereby is back-to-back two by two. It has a shape that is pasted together. The U-shaped structures are bonded to each other by providing a gap between the bonded portions, and the gaps form arrangement grooves 14aa, 14ba, and 14ca formed on the upper portions of the lower bases 14a to 14c. Screw holes are also formed in the upper and lower portions of the lower bases 14a to 14c.
[0016]
The upper surface covers 11a to 11c have a rectangular parallelepiped plate shape and have screw holes for screwing.
The materials used for the base fixing bases 15a and 15b, the lower bases 14a to 14c, and the upper surface covers 11a to 11c are mechanical strength that can withstand outdoor environments such as wind and snow, and can withstand long-term outdoor use. Any material having reliability can be used without particular limitation, such as stainless steel.
[0017]
The solar cells 12a and 12b have a rectangular plate shape in which a solar cell in which an amorphous silicon film is laminated on a stainless steel substrate is bonded to a steel plate and the surface is covered with a fluorine-based resin film. The edge portions of the solar cells 12a and 12b are folded back at 90 ° in parallel with each side and in the same direction, and thereby folded portions 12ae, 12af, 12be, and 12bf are formed for each side. Details of the folded portions 12ae, 12af, 12be, and 12bf will be described later. Moreover, the solar cells 12a and 12b are provided with mounting holes 12aa to 12ad and 12ba to 12bd having a shape with respect to the cross-sectional diameters of the bolts 13a to 13h.
[0018]
Next, the arrangement configuration of the entire solar power generation device 10 will be described.
The folded plate roof 20 on which the solar power generation device 10 is installed has an uneven portion formed in a corrugated shape. The solar power generation apparatus 10 is attached to the folded plate roof 20 by placing the foundation fixing bases 15a and 15b at right angles to the unevenness of the folded plate roof 20, and the foundation fixing table above the convex portion of the uneven portion. It is performed by screwing and fixing the lower portions of 15a and 15b with bolts 21h to 21l. Here, the bolts 21h to 21l are used for fixing the folded plate roof 20 to a roof casing (not shown), and by fixing them, the foundation fixing bases 15a and 15b can be fixed. Do.
[0019]
Lower bases 14a to 14c are arranged perpendicularly to the base fixing bases 15a and 15b at the upper part of the base fixing bases 15a and 15b fixed to the upper part of the folded plate roof 20, and the lower parts of the lower bases 14a to 14c are Screws are fixed to the upper portions of the foundation fixing bases 15a and 15b by bolts 16a to 16k, respectively. Here, attachment of the lower bases 14a to 14c to the base fixing bases 15a and 15b is performed so that the lower bases 14a to 14c can hold the edge portions of the solar cells 12a and 12b.
[0020]
The lower bases 14a to 14c screwed and fixed to the upper parts of the base fixing bases 15a and 15b have the arrangement grooves 14aa, 14ba, and 14ca included in the upper parts thereof, and the solar cells 12a and 12b are folded portions of the lower bases 14a to 14c. 12ae, 12af, 12be, and 12bf are arranged on the upper portions of the lower bases 14a to 14c in a state in which the arrangement grooves 14aa, 14ba, and 14ca are arranged.
[0021]
Upper surface covers 11a to 11c are arranged at positions above the solar cells 12a and 12b so as not to cover the light receiving portions of the solar cells 12a and 12b. The upper surface covers 11a to 11c are respectively mounted on the lower bases 14a to 11h by bolts 13a to 13h. 14c is fixed with screws. Here, the screws are fixed by sandwiching the solar cells 12a and 12b between the upper surface covers 11a to 11c and the lower bases 14a to 14c, and attaching the bolts 13a to the mounting holes 12aa to 12ad and 12ba to 12bd of the solar cells 12a and 12b. The solar cells 12a and 12b are not firmly fixed by this screwing. Thus, even if it is a case where solar cell 12a, 12b is heated and expanded by high temperature by not fixing solar cell 12a, 12b firmly, it is solar cell 12a, 12b from the fixing part of solar cell 12a, 12b. It is possible to avoid applying excessive force. This detailed configuration will be described later.
[0022]
Next, details of the arrangement configuration of the solar cell will be described.
FIG. 3 is a plan view showing the configuration of the solar cell 12a, and FIG. 4 is a sectional view thereof. Here, (a) of FIG. 4 is an AA cross-sectional view of the solar cell 12a shown in FIG. 3, and (b) of FIG. 4 is a BB cross-sectional view thereof.
[0023]
As described above, the solar cell 12a has the attachment holes 12aa to 12ad. Each of the mounting holes 12aa to 12ad is configured at a position avoiding the light receiving portion 12ai of the solar cell 12a, and is configured to have a margin with respect to the cross-sectional diameters of the bolts 13a to 13h. The mounting holes 12aa to 12ad may have any shape such as a circle, an ellipse, or a square, but more preferably an ellipse or a rectangle that is long in the longitudinal direction of the solar cell 12a. This is because the expansion width of the solar cell 12a when the solar cell 12a is heated is larger in the longitudinal direction, and a space for absorbing the expansion is required.
[0024]
Moreover, as described above, the solar cell 12a has the folded portions 12ae to 12ah. The folded portions 12ae to 12ah are portions in which the four sides of the solar cell 12a are folded by 90 ° in the same direction. By providing the folded portions 12ae to 12ah in this way, The installation work of the battery 12a can be facilitated.
[0025]
5 is a plan view showing a state in which the solar cells 12a and 12b are sandwiched between the upper surface cover 11b and the lower base 14b, FIG. 6 is a cross-sectional view taken along the line CC in FIG. 5, and FIG. 5 shows a DD cross-sectional view of FIG.
[0026]
As shown in FIGS. 5 to 7, solar cells 12 a and 12 b are arranged on the upper portion of the lower base 14 b in a state where the folded portions 12 af and 12 be are arranged inside the arrangement groove 14 ba. Here, as shown in FIG. 6, the folded portions 12af and 12be arranged inside the arrangement groove 14ba are arranged with a spatial margin with respect to the gap of the arrangement groove 14ba. The solar cells 12a and 12b are not fixed by the groove 14ba. Further, as shown in FIG. 7, the folded portions 12ag and 12ah are arranged such that the inner portions of the folded portions 12ag and 12ah have a spatial margin with respect to the edge portion of the lower base 14b, and the lower base 14b is formed by the folded portions 12ag and 12ah. The solar cell 12a is not fixed to the edge portion of the. Further, as shown in FIGS. 6 and 7, the upper surface cover 11b and the lower base 14b sandwich the solar cell 12a with a margin in the vertical direction, so that the solar cell 12a is interposed between the upper surface cover 11b and the lower base 14b. Is never fixed. In addition, the mounting holes 12aa to 12ad and 12ba to 12bd are configured to have a spatial margin with respect to the diameters of the bolts 13a to 13h. Therefore, the solar cells 12a are formed by the mounting holes 12aa to 12ad and 12ba to 12bd. , 12b is not fixed.
[0027]
Thus, in this embodiment, the base fixing bases 15a and 15b are screwed and fixed to the folded plate roof, the lower bases 14a to 14c are screwed and fixed to the upper portions of the base fixing bases 15a and 15b, and the arrangement grooves of the lower bases 14a to 14c are fixed. In a state where the folded portions 12ae, 12af, 12be, and 12bf are arranged inside the 14aa to 14ca, the solar cells 12a and 12b are arranged on the upper parts of the lower bases 14a to 14c, and the upper surface covers 11a to 11c arranged on the upper parts are further provided on the lower base 14a. Since the solar cells 12a and 12b are not directly fixed because they are screwed to 14c, even when the solar cells 12a and 12b reach a high temperature and the solar cells 12a and 12b expand during use. Due to the expansion, pressure is applied to the solar cells 12a and 12b from the fixed portion, and the solar cells 12a and 12b may be deformed. It is possible to prevent.
[0028]
Further, since the folded portions are provided in the solar cells 12a and 12b, the solar cells 12a and 12b can be provided with a waist, and the solar cells 12a and 12b can be easily installed.
[0029]
In this embodiment, a film-type solar cell is used as the solar cell. However, the solar cell is not particularly limited thereto, and may be a solar cell having another configuration.
[0030]
Further, in this embodiment, the solar cells 12a and 12b are arranged above the lower bases 14a to 14c in a state where the folded portions 12ae, 12af, 12be and 12bf are arranged inside the arrangement grooves 14aa to 14ca of the lower bases 14a to 14c. The upper surface covers 11a to 11c arranged on the upper part are screwed and fixed to the lower bases 14a to 14c. However, when using a solar cell with low flexibility using a glass substrate or the like, a pressing mechanism 31a as shown in FIG. , 31b, 32 may hold the solar cells 30, 30a, 30b. Here, in FIG. 8 (a), two planes configured in steps are arranged in parallel and connected to each other to form the pressing mechanisms 31a and 31b, and the pressing mechanisms 31a and 31b are arranged above the foundation fixing base 15a. The solar cell 30 is arranged with a margin between the inner portions of the holding mechanisms 31a and 31b and the upper surface portion of the foundation fixing base 15a, thereby holding the solar cell 30. Yes. Further, in FIG. 8B, the pressing mechanism 32 is configured by folding the U-shaped tip part 90 ° on both sides, and the pressing mechanism 32 is screwed and fixed to the upper part of the base fixing base 15a. Solar cells 30a and 30b are arranged with a margin between the lower part of the folded portion of the mechanism 32 and the upper surface of the base fixing base 15a, thereby holding the solar cell 30.
[0031]
Furthermore, in this embodiment, the attachment holes are formed in the solar cells 12a and 12b, but a solar cell that does not constitute the attachment holes may be used. In this case, screwing and fixing to the lower bases 14a to 14c of the upper surface covers 11a to 11c is performed by fixing an outer portion of the edge of the solar cell with a bolt.
[0032]
【The invention's effect】
As described above, in the present invention, the fixing base is screwed and fixed to the folded plate roof, the solar cell is arranged on the upper part of the fixing base in the state in which the folded portion is arranged in the arrangement groove of the fixing base, and the upper part thereof. The top cover placed on the fixed base is screwed and fixed to the fixing base, so the solar cell is not directly fixed, and even when the solar cell reaches a high temperature during use and the solar cell expands, its expansion Thus, it is possible to prevent the solar cell from being deformed by applying pressure to the solar cell from the fixing portion.
[0033]
In addition, since the folded portion is provided in the solar cell, the solar cell can be provided with a waist, and the solar cell 1 can be easily installed.
[Brief description of the drawings]
FIG. 1 is an assembly diagram illustrating a configuration of a solar power generation device.
FIG. 2 is a perspective view showing a configuration of a photovoltaic power generation apparatus after assembly.
FIG. 3 is a plan view showing a configuration of a solar cell.
4 is a cross-sectional view of the solar cell shown in FIG.
FIG. 5 is a plan view showing a state in which a solar cell is sandwiched between an upper surface cover and a lower base.
6 is a cross-sectional view taken along the line CC of FIG.
7 is a cross-sectional view taken along the line DD of FIG.
FIG. 8 is a perspective view showing a configuration in which a solar cell is held by a pressing mechanism.
[Explanation of symbols]
10 Photovoltaic power generation devices 11a to 11c Top cover 12a, 12b Solar cells 12ab to 12ad, 12ba to 12bd Mounting holes 12ae to 12ah, 12be, 12bf Folded portions 14a to 14c Lower bases 14aa to 14ca Arrangement grooves 15a and 15b Foundation fixing base 20 Fold Plate roof 30, 30a, 30b Solar cells 31a, 31b, 32 Holding mechanism

Claims (6)

光エネルギーを電気エネルギーに変換する太陽光発電装置において、
上部に配置溝を有し、折板屋根に第１のボルトによってねじ止めされる固定台と、
縁部分に折り返し部を有し、前記折り返し部の少なくとも一部が前記配置溝の内部に配置された状態で、前記固定台の上部に配置される太陽電池と、
前記太陽電池の上面側に配置され、前記固定台に第２のボルトによってねじ止めされる上面カバーと、
を備え、
前記固定台及び前記上面カバーは、前記第２のボルトによるねじ止めのためのねじ止め穴を有し、
前記太陽電池は、前記第２のボルトの断面径に対して大きく形成され前記第２のボルトが挿通される取り付け穴を有し、
前記固定台の上部に配置された前記太陽電池と前記上面カバーとの間に空間的余裕を持たせるように、前記上面カバーのねじ止め穴に前記第２のボルトの一端側が固定され、前記太陽電池の前記取り付け穴に前記第２のボルトが挿通され、前記固定台のねじ止め穴に前記第２のボルトの他端側が固定されており、
前記折り返し部を前記配置溝の内部に配置した状態で、前記折り返し部と前記配置溝の側壁との間に空間的余裕を持たせるように、前記配置溝の幅寸法が前記折り返し部の厚み寸法よりも大きく設定されていることを特徴とする太陽光発電装置。In a photovoltaic power generation device that converts light energy into electrical energy,
A fixing base having an arrangement groove at the top and screwed to the folded plate roof by a first bolt ;
A solar cell disposed on an upper portion of the fixed base, with a folded portion at an edge portion, with at least a part of the folded portion being disposed inside the placement groove;
An upper surface cover disposed on the upper surface side of the solar cell and screwed to the fixed base by a second bolt ;
With
The fixing base and the upper surface cover have screw holes for screwing with the second bolts,
The solar cell has a mounting hole that is formed larger than a cross-sectional diameter of the second bolt and through which the second bolt is inserted,
One end side of the second bolt is fixed to a screw hole of the upper surface cover so as to provide a space between the solar cell disposed on the upper part of the fixing base and the upper surface cover, The second bolt is inserted into the mounting hole of the battery, and the other end of the second bolt is fixed to the screwing hole of the fixing base;
In a state where the folded portion is disposed inside the placement groove, the width dimension of the placement groove is a thickness dimension of the folded portion so as to provide a spatial margin between the folded portion and the side wall of the placement groove. A photovoltaic power generation device characterized by being set larger than the above . 前記固定台は、前記折板屋根が有する凹凸と直角に、前記折板屋根に前記第１のボルトによってねじ止め固定される基礎固定台と、上部に前記配置溝を有し、前記基礎固定台の上部に第３のボルトによってねじ止め固定される下台とによって構成され、前記上面カバーは、前記第２のボルトによって前記下台にねじ止めされることを特徴とする請求項１記載の太陽光発電装置。  The fixing base has a foundation fixing base that is fixed to the folding plate roof with the first bolts at right angles to the unevenness of the folded plate roof, and has the placement groove at the top, and the base fixing base. 2. The photovoltaic power generation according to claim 1, wherein the upper surface cover is fixed to the lower base by the second bolt, and the upper cover is fixed to the lower base by the second bolt. apparatus. 前記第１のボルトは、前記折板屋根を固定するボルトであり、  The first bolt is a bolt for fixing the folded plate roof,
前記基礎固定台は、前記折板屋根を固定する前記第１のボルトを用いて、前記折板屋根の上面にねじ止め固定されることを特徴とする請求項２記載の太陽光発電装置。  The photovoltaic power generation apparatus according to claim 2, wherein the foundation fixing base is screwed and fixed to the upper surface of the folded plate roof using the first bolts for fixing the folded plate roof. 前記基礎固定台は、前記折板屋根を固定する前記第１のボルトの位置に対応するボルト穴を有することを特徴とする請求項３記載の太陽光発電装置。  The photovoltaic power generation apparatus according to claim 3, wherein the foundation fixing base has a bolt hole corresponding to a position of the first bolt for fixing the folded plate roof. 前記下台は、前記太陽電池の縁部分を保持できる位置に取り付けられることを特徴とする請求項２記載の太陽光発電装置。  The solar power generator according to claim 2, wherein the lower base is attached to a position where an edge portion of the solar cell can be held. 光エネルギーを電気エネルギーに変換する太陽光発電装置の取り付け方法において、  In the method of installing a photovoltaic power generation device that converts light energy into electrical energy,
固定台を、折板屋根に第１のボルトによってねじ止めし、  The fixing base is screwed to the folded plate roof with a first bolt,
前記固定台の上部に、縁部分に折り返し部を有する太陽電池を、前記折り返し部の少なくとも一部を前記固定台の配置溝の内部に配置した状態で配置し、  On the upper part of the fixed base, a solar cell having a folded part at an edge part is disposed in a state where at least a part of the folded part is disposed inside the arrangement groove of the fixed base,
前記太陽電池の上面側に、上面カバーを、前記固定台に第２のボルトによってねじ止めした状態で配置し、  On the upper surface side of the solar cell, an upper surface cover is arranged in a state where it is screwed to the fixed base with a second bolt,
前記上面カバーは、前記固定台の上部に配置された前記太陽電池との間に空間的余裕を持たせるように、前記上面カバーのねじ止め穴に前記第２のボルトの一端側を固定し、前記太陽電池に形成され前記第２のボルトの断面径に対して大きく形成されている取り付け穴に前記第２のボルトを挿通し、前記固定台のねじ止め穴に前記第２のボルトの他端側を固定した状態で配置し、  The upper surface cover fixes one end side of the second bolt to the screw hole of the upper surface cover so as to give a spatial margin between the solar cell and the solar cell disposed on the upper part of the fixing table, The second bolt is inserted into a mounting hole formed in the solar cell and formed to be larger than a cross-sectional diameter of the second bolt, and the other end of the second bolt is inserted into a screw hole of the fixing base. Place with the side fixed,
前記配置溝は、前記折り返し部を前記配置溝の内部に配置した状態で、前記折り返し部と前記配置溝の側壁との間に空間的余裕を持たせるように、前記配置溝の幅寸法が前記折り返し部の厚み寸法よりも大きく設定されていることを特徴とする太陽光発電装置の取り付け方法。  The arrangement groove has a width dimension of the arrangement groove so that a space is provided between the turn-up portion and a side wall of the arrangement groove in a state where the folded portion is arranged inside the arrangement groove. A method for attaching a photovoltaic power generation apparatus, wherein the thickness is set to be larger than a thickness dimension of the folded portion.
JP2000114171A 2000-04-14 2000-04-14 Photovoltaic power generation apparatus and method of attaching the same Expired - Fee Related JP4103299B2 (en)

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