JP5150879B2 - Iii−v属半導体太陽電池を使用する集中太陽光発電システムモジュール - Google Patents
Iii−v属半導体太陽電池を使用する集中太陽光発電システムモジュール Download PDFInfo
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Description
太陽電池レシーバは、太陽エネルギを電気に変換する。ここで記載される種々の実施形態において、三重接合III−V属化合物半導体太陽電池が用いられるが、用途に応じて、他のタイプの太陽電池を使用することが可能である。太陽電池レシーバは、ときどき、追加のコンポーネント(例えば、出力装置又は他の太陽電池レシーバと接続するためのコネクタ)を含む。
図1は、太陽エネルギから電気を生成するソーラーパネル10の一実施形態を示す。パネル10は、複数の太陽電池モジュール20を含む。この図において、24個の太陽電池モジュール20が示されている。各モジュール20は、1つ以上の太陽電池レシーバ(例えば、図2Aのアイテム12a)、太陽電池レシーバの太陽電池上に太陽光を集中させるための対応するレンズ(例えば、図2Aのアイテム204a)を備えることができる。複数のパネル10が提供される場合は、それらは普通は直列に接続されるが、他の実施形態では平行又は直並列にパネルが接続される。
図2Aは、レンズ22a〜22jのアレイ(それらのうち、4つは図示されていない)及び対応する太陽電池レシーバ12a〜12j(図4のアイテム12の形態でそれぞれ示されている)を備えた太陽電池モジュール20の実施形態を示す。いくつかの実施形態において、太陽電池モジュールは、14個のレンズ、及び14個の対応する太陽電池レシーバを備えている。図示された実施形態では、アレイは「7×2」である。
図3は、太陽電池モジュール20の太陽電池レシーバ12(例えば、図2Aの12a)の回路図を示している。このレシーバは、直列に配列された上部セル30a、中間セル30b及び底部セル30cを備えた三重接合III−V属化合物半導体太陽電池30を含む。太陽電池モジュールで実施されるとき、太陽電池30は、レンズ(図2A及び図2B参照)からの集められた太陽エネルギを受け取るように配置される。
図7A、図7B及び図7Cは、例えば、図2Aのアイテム12a〜12j又は図4のアイテム12のような太陽電池レシーバで使用される、太陽電池730の第2の実施形態を示す。太陽電池730は、nオンp極を有する多接合太陽電池であり、Ge基板上のInGaP/(In)GaAsIII−V属化合物で構成される。太陽電池730はまた、セルの寿命(EOL)特性を最大化するとともに、カバーガラス相互接続セル(CIC)又は太陽電池アセンブリ(SCA)レベルにおける反射が最小になるように、スペクトル反射特性が設計された反射防止コーティングを含む。図7A及び図8Bは、n極側からの透視図である。
図8は、太陽電池830及び関連するダイオード814を備えた太陽電池レシーバ812の他の実施形態を示している。太陽電池レシーバ812は、図4のレシーバ12と実質的に同じ手段における用途で使用することができる。太陽電池830は、ダイオード814に電気的に接続されている。この実施形態では、太陽電池830の上部表面は、太陽電池830の2つの端を占めるコンタクト領域801を備えている。いくつかの実施形態において、コンタクト領域801は、電気接続を可能にしながら、太陽エネルギを電気に変換する領域を最大化できるように可能な限り小さく作られる。太陽電池830の特定の寸法は用途に応じて変更されるが、標準的な寸法は約1cm平方である。例えば、標準的な寸法の組み合わせは、全体で約12.58mm×12.58mm、厚さ約0.160mm、トータル活性領域は約108mm2である。例えば、約12.58mm×12.58mmの太陽電池830において、コンタクト領域801は、幅約0.98mm、開口領域は約10mm×10mmである。コンタクト領域801は、種々の導電材料で作ることができる。この実施形態では、光を受けるのは、太陽電池830のn導電側であり、よって、コンタクト領域801は、太陽電池830のn導電側に配置される。
制御不可能な放電の問題を解決するのに加えて、アンダーフィル及び/又はグラブトップ(絶縁保護コーティング)の使用は、追加的な予期しない利点を生じる結果となり得る。
異なる太陽集中での太陽電池レシーバ(アイテム12)のテストの実施結果は、以下のデータのとおりである。470Suns及び1150Sunsにおけるテストは、太陽電池モジュールアセンブリ(例えば、アイテム20)の部分としての太陽電池レシーバ12を実験材料とした。
Voc(オープン回路電圧): 2.583V(1Sun),3.051V(470Suns),3.078V(1150Suns)
Jsc(ショート回路電流):13.9mA/cm2(1Sun),6.49A/cm2(470Suns),15.92A/cm2(1150Suns)
Vmp(最大パワー点での電圧):2.32V(1Sun),2.704V(470Suns),2.523V(1150Suns)
Jmp(最大パワー点での電流):13.46mA/cm2(1Sun),6.27A/cm2(470Suns),15.04A/cm2(1150Suns)
Pmp(最大パワー点):31.23mW/cm2(1Sun),17.03W/cm2(470Suns),38.03W/cm2(1150Suns)
Claims (8)
- 太陽エネルギを電気に変換する太陽電池モジュールであって、
第1側面と、前記第1側面と反対側の第2側面とを有するハウジングと、
前記ハウジングの前記第1側面に接続されたフレネルレンズのアレイ総体と、
前記ハウジングの前記第2側面上に配置された複数の太陽電池レシーバと、
前記レンズのそれぞれの前記光路内に配置された複数の2次的光エレメントであって、前記2次的光エレメントのそれぞれが、複数の反射壁を有するテーパ状のそれぞれの光チャンネルを画定する、複数の2次的光エレメントと、を備え、
前記太陽電池レシーバのそれぞれは、
1つ又は2つ以上のIII−V属化合物半導体層を含み、約1cm×約1cmの寸法を有する太陽電池と、
ボディ、アノード端子及びカソード端子を有し、かつ前記太陽電池に並列接続されたダイオードと、
前記太陽電池及び前記ダイオードを支持する基板であって、前記ダイオードのボディは上部及び底部を有し、前記底部は前記上部より前記基板の近くに配置されている、基板と、
前記ダイオードのボディの前記上部の上に配置され、前記基板に拡がり、前記ダイオードのボディ、アノード端子及びカソード端子を実質上密閉しているコーティングと、
前記ダイオードのボディの前記底部と前記基板との間の実質上すべての隙間を占めているアンダーコーティングと、
前記太陽電池及び前記ダイオードに並列接続され、かつ1つ以上の離れた太陽電池レシーバに電気接続を提供するように適合された第1及び第2電気端子と、を備え、
前記太陽電池のそれぞれは、各レンズ及び各光チャンネルの光路内に配置され、
前記コーティングは、前記太陽電池の部分には形成されていない、ことを特徴とする太陽電池モジュール。 - 前記アンダーコーティングは、前記ダイオードと前記基板との間に空気の隙間が無いように配置されていることを特徴とする請求項1記載の太陽電池モジュール。
- 前記フレネルレンズアレイ総体は、前記ハウジングに位置合わせエレメントを接続するように適合された位置合わせエレメントを有するアクリル性シートであることを特徴とする請求項1記載の太陽電池モジュール。
- 前記フレネルレンズアレイ総体の各レンズの焦点距離は、38.1cm〜50.8cmであることを特徴とする請求項1記載の太陽電池モジュール。
- 前記太陽電池は、少なくとも3つの領域を有する多接合セルであり、
前記領域はそれぞれ、ゲルマニウム含有基板、前記ゲルマニウム含有基板上に配置されたInGaAs又はGaAs含有層、及び前記InGaAs又はGaAs含有層上に配置されたInGaPを有することを特徴とする請求項1記載の太陽電池モジュール。 - 前記2次的光エレメントは、高反射の内側表面を有する略台形の固体であることを特徴とする請求項1記載の太陽電池モジュール。
- 前記光チャンネルは、光入口及び光出口によって画定され、前記光入口は、前記光出口より広いことを特徴とする請求項1記載の太陽電池モジュール。
- 前記光出口は、前記太陽電池とほぼ同じ寸法を有するように形成されていることを特徴とする請求項1記載の太陽電池モジュール。
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-
2008
- 2008-02-11 US US12/069,642 patent/US8093492B2/en not_active Expired - Fee Related
- 2008-11-04 US US12/264,369 patent/US20090199891A1/en not_active Abandoned
- 2008-11-07 ES ES200803187A patent/ES2378392A1/es active Pending
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2009
- 2009-01-16 KR KR1020090003929A patent/KR101224923B1/ko not_active IP Right Cessation
- 2009-01-20 TW TW098102103A patent/TW200941749A/zh unknown
- 2009-01-23 CN CN200910009814.0A patent/CN101510571B/zh not_active Expired - Fee Related
- 2009-01-27 DE DE102009006286A patent/DE102009006286A1/de not_active Withdrawn
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Also Published As
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US8093492B2 (en) | 2012-01-10 |
TW200941749A (en) | 2009-10-01 |
CN101510571B (zh) | 2014-03-26 |
DE102009006286A1 (de) | 2009-10-01 |
ES2378392A1 (es) | 2012-04-12 |
CN101510571A (zh) | 2009-08-19 |
KR20090086906A (ko) | 2009-08-14 |
US20090199890A1 (en) | 2009-08-13 |
JP2009188410A (ja) | 2009-08-20 |
US20090199891A1 (en) | 2009-08-13 |
KR101224923B1 (ko) | 2013-01-23 |
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