JP6222902B2 - 太陽電池および太陽電池アセンブリ - Google Patents
太陽電池および太陽電池アセンブリ Download PDFInfo
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- JP6222902B2 JP6222902B2 JP2012155289A JP2012155289A JP6222902B2 JP 6222902 B2 JP6222902 B2 JP 6222902B2 JP 2012155289 A JP2012155289 A JP 2012155289A JP 2012155289 A JP2012155289 A JP 2012155289A JP 6222902 B2 JP6222902 B2 JP 6222902B2
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- H—ELECTRICITY
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- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
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- H01L27/142—Energy conversion devices
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- H01L31/042—PV modules or arrays of single PV cells
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- H01L31/042—PV modules or arrays of single PV cells
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- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact solar cells
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- H01L31/0264—Inorganic materials
- H01L31/0304—Inorganic materials including, apart from doping materials or other impurities, only AIIIBV compounds
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Description
a) 太陽電池を準備する段階、
b) 太陽電池の接着剤の後側の、少なくとも、全ての前側接点パッドの下部の位置に、好ましくは加硫シリコーン接着剤、を塗布する段階、
c) 太陽電池を、その後側を支持構造体の上に置いて配置する段階、
d) 太陽電池が配置された支持構造体上に熱および/または圧力を与えることによって、接着剤を硬化する段階、
e) 段階c)において配置された他の太陽電池でa)からd)の段階を繰り返して、相互接続される、関連する接点パッドが互いに近くに配置されるようにする段階、
f) 関連する接点パッドを接続するために、インターコネクタを配置し、溶接する段階、
g) 所定の数の太陽電池が支持構造体に取り付けられ、電気的に相互接続されるまで、段階e)およびf)を繰り返す段階。
d1) 全ての前側接点パッド位置の下部の位置で、接着剤をまず硬化する段階、
d2) その後、残りの接着位置で接着剤を硬化する段階、
段階d1)および段階d2)の間の太陽電池の機械的および/または電気的一体性を試験する追加の段階を提供することによって、太陽電池が支持構造体に完全に固定される前に、試験段階を実施することが可能になる。残りの接着部分において接着剤は硬化されておらずしたがって未だ柔軟であるため、試験された太陽電池において欠陥が検知された場合、太陽電池は容易に取り除かれ、他の太陽電池で置き換えることができる。
R = 10mΩcm*140μm/(3*7mm2) = 0.7mΩ
4 半導体基板
8 第2電気接点
9 第1電気接点
10 第1電気接点パッド
12 反射防止コーティング
304 第2電気接点
305 グルーブ
Claims (15)
- 少なくとも3つの相互接続可能な太陽電池の太陽電池アセンブリであって、
−各々の太陽電池(C;804、802、808、1010)が前面(4’)および後面(4”)を有する半導体基板(4)を備え、
・第1のp−n接合(3)が、基板(4)中の、その前面(4’)の近くに提供され、前記p−n接合は基板を、第1ドーピングを有する前部(306)および第2ドーピングを有する後部(303)に分離し、
・さらなるp−n接合(1)を含む前層(1’)は基板(4)の前面(4’)に提供され、前記p−n接合は前層(1’)を、前記第1ドーピングを有する前部および前記第2ドーピングを有する後部に分離し、前記前層の前部は前記基板の前部(306)に向けられず、
・少なくとも1つの第1電気接点(9)が太陽電池の前側(C’)に提供され、前記前層(1’)の前部に電気的に接続され、
・太陽電池(C)の後側(C”)に提供される少なくとも1つの第2電気接点(8)が、太陽電池(C)の前側(C’)に提供される接点(304)に電気的に接続され、
・前記少なくとも1つの第2電気接点(304)が、太陽電池(C)の前側(C’)に開口し、基板(4)の後部(303)に延びるグルーブ(305)の底部表面に配置され、
・第2電気接点(8)と接点(304)との間の前記電気的接続が、基板(4)の後部(303)によって提供され、
・カバーガラス(403、1008)が各々の太陽電池(804、802、808、1010)の前層の前面に提供され、
・前記カバーガラス(403)が、第2電気接点(304)の位置に切り欠き(404)を備え、切り欠き(404)は電気接点(304)の接点パッド(304’)と同じサイズを有し、
−前記太陽電池アセンブリにおいて、
・各太陽電池(C)の第1および第2電気接点(9,8)の第1および第2電気接点パッド(10、304’)が、各々、前記太陽電池が太陽電池の列を形成するとき、第1太陽電池の第1電気接点パッド(10)が隣接する太陽電池の第2電気接点パッド(304’)の近くに配置され、前記第1太陽電池の第2電気接点パッド(304’)がさらなる隣接する太陽電池の第1電気接点パッド(10)の近くに配置されるように位置決めされ、
・インターコネクタ(503、504)が、前記第1太陽電池の各第1電気接点パッド(10)を前記隣接する太陽電池の隣接する第2電気接点パッド(304’)と接続するように、かつ前記第1太陽電池の各第2電気接点パッド(304’)を前記さらなる隣接する太陽電池の隣接する第1電気接点パッド(10)と接続するように、提供され、
・各インターコネクタ(503、504)のサイズは、インターコネクタの要素が、前記インターコネクタによって接続される太陽電池の前面(C’)から突き出さないようなものであり、
・各インターコネクタ(503、504)が、インターコネクタ(503、504)の前面を覆うカバー部品(600)を備える、
ことを特徴とする太陽電池アセンブリ。 - 少なくとも3つの相互接続可能な太陽電池の太陽電池アセンブリであって、
−各々の太陽電池(C;804、802、808、1010)が前面(4’)および後面(4”)を有する半導体基板(4)を備え、
・第1のp−n接合(3)が、基板(4)中の、その前面(4’)の近くに提供され、前記p−n接合は基板を、第1ドーピングを有する前部(306)および第2ドーピングを有する後部(303)に分離し、
・さらなるp−n接合(1)を含む前層(1’)は基板(4)の前面(4’)に提供され、前記p−n接合は前層(1’)を、前記第1ドーピングを有する前部および前記第2ドーピングを有する後部に分離し、前記前層の前部は前記基板の前部(306)に向けられず、
・少なくとも1つの第1電気接点(9)が太陽電池の前側(C’)に提供され、前記前層(1’)の前部に電気的に接続され、
・太陽電池(C)の後側(C”)に提供される少なくとも1つの第2電気接点(8)が、太陽電池(C)の前側(C’)に提供される接点(304)に電気的に接続され、
・前記少なくとも1つの第2電気接点(304)が、太陽電池(C)の前側(C’)に開口し、基板(4)の後部(303)に延びるグルーブ(305)の底部表面に配置され、
・第2電気接点(8)と接点(304)との間の前記電気的接続が、基板(4)の後部(303)によって提供され、
・カバーガラス(403、1008)が各々の太陽電池(804、802、808、1010)の前層の前面に提供され、
・前記カバーガラス(403)が、第2電気接点(304)の位置に切り欠き(404)を備え、切り欠き(404)は電気接点(304)の接点パッド(304’)と同じサイズを有し、
−前記太陽電池アセンブリにおいて、
・各太陽電池の第1および第2電気接点の第1および第2電気接点パッドが、各々、前記太陽電池が太陽電池のアレイを形成するとき、第1太陽電池の第1電気接点パッドが隣接する太陽電池の第2電気接点パッドの近くに配置され、前記第1太陽電池の第2電気接点パッドがさらなる隣接する太陽電池の第1電気接点パッドの近くに配置されるよう位置決めされ、
・インターコネクタが、前記第1太陽電池の各第1電気接点パッドを前記隣接する太陽電池の隣接する第2電気接点パッドと接続するように、かつ前記第1太陽電池の各第2電気接点パッドを前記さらなる隣接する太陽電池の隣接する第1電気接点パッドと接続するように、提供され、
・各インターコネクタのサイズは、インターコネクタの要素が、前記インターコネクタによって接続される太陽電池の前面から突き出さないようなものであり、
・各インターコネクタ(503、504)が、インターコネクタ(503、504)の前面を覆うカバー部品(600)を備える、
ことを特徴とする太陽電池アセンブリ。 - カバー部品(600)が柔軟な方法でインターコネクタ(503、504)に取り付けられることを特徴とする、請求項1または2に記載の太陽電池アセンブリ。
- 前記カバー部品(600)はカバーガラス片であることを特徴とする、請求項1から3の何れか1項に記載の太陽電池アセンブリ。
- ・p−n接合(2)を含む少なくとも1つの中間層(2’)が、前記基板(4)と前記前層(1’)との間に提供され、前記p−n接合(2)は少なくとも1つの中間層(2’)を、前記第1ドーピングを有する前部および前記第2ドーピングを有する後部に分離し、前記中間層前部は前記基板前部(306)に向けられないことを特徴とする、請求項1から4の何れか1項に記載の太陽電池アセンブリ。
- 前記グルーブ(305)が太陽電池(C)の横側(7’)に提供され、それが横側(7’)にも開口するようにすることを特徴とする、請求項1から5の何れか1項に記載の太陽電池アセンブリ。
- ・前層(1’)の前面が少なくとも部分的に反射防止コーティング(12)を備え、
および/または
・グルーブ(305)の前記底部表面が、少なくとも部分的に反射防止コーティング(12’)を備えた前記第2電気接点(304)の接点パッド(304’)の周囲に提供されることを特徴とする、請求項1から6の何れか一項に記載の太陽電池アセンブリ。 - ・前記太陽電池がIII−V族3接合電池であり、前記基板(4)がゲルマニウムウェハであることを特徴とする、請求項1から7の何れか一項に記載の太陽電池アセンブリ。
- ・前記インターコネクタがU形状(503)構造、またはW形状(504)構造で形成されることを特徴とする、請求項1から8の何れか一項に記載の太陽電池アセンブリ。
- 前記インターコネクタ(503、504)の少なくとも1つの自由端が、関連する電気接点パッド(304’)から離れて上方に曲げられ、グルーブ(500’)の側壁から離れることを特徴とする、請求項1から9の何れか一項に記載の太陽電池アセンブリ。
- ・各インターコネクタ(702)が複数のグリッドフィンガー(705)を含み、その各々が別個に、関連する電気接点パッド(304’)と接触することを特徴とする、請求項1から10の何れか一項に記載の太陽電池アセンブリ。
- ・前記カバーガラス(403、1008)の前面が、第2電気接点パッドの1つ(304’)を収容するグルーブ(500’)に隣接するカバーガラス(403、1008)の側壁の金属化部分(701)に接続される導電性コーティング(700)を備え、
・前記金属化部分(701)が前記第1電気接点パッド(304’)に電気的に接続されることを特徴とする、請求項1から11のの何れか一項に記載の太陽電池アセンブリ。 - ・インターコネクタ(702)の自由端が太陽電池前側に向かって曲げられ、
・インターコネクタ(702)が前記電気接点パッド(304’)に固定されるとき、インターコネクタ(702)の屈曲部分(703)が前記金属化部分(701)に電気的に接続し、
・屈曲部分(703)が、その自由端においてグリッドフィンガー(708)を形成することを特徴とする、請求項12に記載の太陽電池アセンブリ。 - a)太陽電池(1001)を準備する段階、
b)太陽電池(1001)の後側の、少なくとも、全ての前側接点パッド位置(1004)の下部の位置に接着剤を塗布する段階、
c)太陽電池(C)を、その後側を支持構造体(1000)の上に置いて配置する段階、
d)太陽電池(1001)が配置された支持構造体(1000)上に熱および/または圧力を与えることによって、接着剤を硬化する段階、
e)段階c)において配置された他の太陽電池でa)からd)の段階を繰り返して、相互接続される、関連する接点パッドが互いに近くに配置されるようにする段階、
f)関連する接点パッドを接続するために、インターコネクタ(1006)を配置し、溶接する段階、
g)所定の数の太陽電池(1001)が支持構造体(1000)に取り付けられ、電気的に相互接続されるまで、段階e)およびf)を繰り返す段階、
h)各インターコネクタ(503、504)上に、前記インターコネクタ(503、504)の前面を覆うために、カバー部品(600)を配置し、組み込む段階、
を備える請求項1から13の何れか一項に記載の太陽電池アセンブリを製造する方法。 - 段階d)が以下の2つのサブ段階に分けて実施されることを特徴とする、請求項14に記載の太陽電池アセンブリを製造する方法:
d1)全ての前側接点パッド位置(1004)の下部の位置で、接着剤をまず硬化する段階、
d2)その後、残りの接着位置(1003)で接着剤を硬化する段階、
ここで、段階d1)および段階d2)の間に、太陽電池(1001)の機械的および/または電気的一体性を試験する追加の段階が実施される。
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