JP7120977B2 - 太陽電池及びこれを含む太陽電池パネル - Google Patents
太陽電池及びこれを含む太陽電池パネル Download PDFInfo
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Description
第1または第2電極(42、44)の第1または第2バスバー(42b、44ba)は絶縁膜を貫通して第1または第2導電型の領域{20、30}に接触して形成されることもあり、絶縁膜の上で第1または第2導電型領域(20、30)と離隔して形成されることもできる。このとき、断面で見るときに、第1電極42及び第2電極44の第1及び第2フィンガーライン(44a、44b)及び/または第1及び第2バスバー(42b、44ba)の構造が互いに同じであることもあり、互いに異なることもできる。
または、第1バスバー42b及び/または第2バスバーで切断線(CL)に隣接する部分に長く続く一本の延長パッド部を有する母太陽電池150aを形成した後に、これを第1方向と平行な切断線(CL)に沿って切断しながら1つの延長パッド部二つの外側のパッドになるように切断すれば、各太陽電池150に位置する一つの外側パッドを延長側パッドとして用いて、これの反対側に位置するパッドを端部側パッドとして用いることができる。このとき、延長パッド部の長さは、内側パッドの長さの2倍より大きくすることができる。または、第1バスバー42b及び/または第2バスバーで切断線(CL)に隣接する部分に内側パッドより長い長さを有する二つの外側のパッドを有する母太陽電池150aを形成した後に二つの外側のパッドの間を第1方向と平行な切断線(CL)に沿って切断すると、各太陽電池150に位置する一つの外側パッドを延長側パッドとして用いて、これの反対側に位置するパッドを端部側パッドとして用いることができる。その他の様々な変形が可能である。
Claims (11)
- 第1及び第2太陽電池を含む複数の太陽電池と、
前記第1及び第2太陽電池を電気的に接続する複数の配線材と
を含み、
前記第1及び第2太陽電池の各々は、
半導体基板と
前記半導体基板の一面に、または前記半導体基板の前記一面上に位置する第1導電型領域と、
前記第1導電型領域に電気的に接続される第1電極と
を含み、
前記第1電極は、第1方向に形成され、互いに平行な複数の第1フィンガーラインと前記第1フィンガーラインに電気的に接続され、前記第1方向と交差する第2方向に位置する複数の第1パッド部を含む第1バスバーを含み、
前記複数の第1パッド部は、
前記第2方向に前記半導体基板の両側端に隣接して位置する第1外側パッドと、前記第1外側パッドより内側に配置される複数の第1内側パッドを含み、
前記第1外側パッドと前記複数の第1内側パッドは、前記第1方向の幅が同一であり、
前記第1外側パッドは、前記複数の第1内側パッドのうちの一つの第1内側パッドの長さより前記第2方向に長さが長く、
前記複数の第1内側パッドは、前記第2方向に隣接したものと離れて配置され、
前記第1外側パッドは、
前記第1バスバーの一端側に位置し、前記配線材の端部が位置する第1端部側パッドと前記第1バスバーの他端側に位置し、前記配線材の延長部分に位置する第1延長側パッドを含み、
前記第1端部側パッドの面積と前記第1延長側パッドの面積が互いに異なり、
前記複数の太陽電池がそれぞれ長軸と短軸を有し、
前記第1方向が前記長軸と平行であり、第2方向が前記短軸と平行であり、前記配線材が前記第1及び第2太陽電池を前記短軸に沿って接続し、
前記複数の太陽電池のそれぞれは母太陽電池を切断した単位太陽電池であり、
前記複数の太陽電池のそれぞれは前記第2方向において切断面と非切断面を含み、
前記第1延長側パッドは前記非切断面に隣接して配置され、前記第1端部側パッドは前記切断面に隣接して配置される、太陽電池パネル。 - 前記第1端部側パッドと前記第1延長側パッドは、面積または前記第2方向での全体の長さが互いに異なる、請求項1に記載の太陽電池パネル。
- 前記第1端部側パッドと前記配線材との総重畳面積の合計と前記第1延長側パッドと前記配線材との総重畳面積の合計が互いに異なるか、または前記第1端部側パッドと前記配線材との総重畳長さの合計と前記第1延長側パッドと前記配線材との総重畳長さの合計が互いに異なる、請求項1に記載の太陽電池パネル。
- 前記第1端部側パッドと前記第1延長側パッドはパッドの数が互いに異なる、請求項2に記載の太陽電池パネル。
- 前記第1端部側パッドの面積より前記第1延長側パッドの面積がさらに大きいか、または、
前記第1端部側パッドと前記配線材の総重畳面積の合計より前記第1延長側パッドと前記配線材の総重畳面積の合計が、さらに大きい、請求項1に記載の太陽電池パネル。 - 前記第2方向で前記第1端部側パッドの全体の長さより前記第1延長側パッドの全体の長さがさらに大きいか、または、
前記第1端部側パッドと前記配線材の総重畳長さの合計より前記第1延長側パッドと前記配線材の総重畳長さの合計がさらに大きい、請求項5に記載の太陽電池パネル。 - 前記第1端部側パッドの面積または形成面積が、前記第1内側パッドの面積と同じか大きく、
前記第1延長側パッドの面積または形成面積が、前記第1内側パッドの面積より大きい、請求項5に記載の太陽電池パネル。 - 前記第1及び第2太陽電池の各々は、
前記半導体基板の他面にまたは前記半導体基板の前記他面上に位置する第2導電型領域と、
前記第2導電型領域に電気的に接続される第2電極と
をさらに含み、
前記第2電極は、前記第2方向に位置する複数の第2パッド部を含む第2バスバーを含み、
前記複数の第2パッド部は、前記第2バスバーの一端側に位置する第2延長側パッドと前記第2バスバーの他端側に位置する第2端部側のパッドを含み、
前記第2端部側のパッドの面積より前記第2延長側パッドの面積がさらに大きいか、または前記第2端部側のパッドと前記配線材の総重畳面積の合計より前記第2延長側パッドと前記配線材の総重畳面積の合計が、さらに大きい、請求項5に記載の太陽電池パネル。 - 前記第1延長側パッドの端部が前記第2端部側のパッドの端部と同じかそれより内側に位置する、請求項8に記載の太陽電池パネル。
- 太陽電池の一面に基づいて前記第1方向で前記複数の配線材の数が6個乃至33個であるか、または、前記複数の配線材の幅それぞれが250μm乃至500μmであるか、または、
前記複数の配線材が円形またはラウンドになった部分を含む断面形状を有する、請求項1に記載の太陽電池パネル。 - 前記複数の配線材の幅が前記第2方向での前記第1フィンガーラインの幅より大きく、前記第1方向での前記第1パッド部の幅より小さい、請求項1に記載の太陽電池パネル。
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