JPH0448660A - Solar battery module - Google Patents
Solar battery moduleInfo
- Publication number
- JPH0448660A JPH0448660A JP2157910A JP15791090A JPH0448660A JP H0448660 A JPH0448660 A JP H0448660A JP 2157910 A JP2157910 A JP 2157910A JP 15791090 A JP15791090 A JP 15791090A JP H0448660 A JPH0448660 A JP H0448660A
- Authority
- JP
- Japan
- Prior art keywords
- interconnector
- solar battery
- solar cell
- electrode
- effective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001154 acute effect Effects 0.000 claims abstract description 10
- 239000004065 semiconductor Substances 0.000 description 14
- 239000000758 substrate Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002109 crystal growth method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、太陽電池セルをインタコネクタによって接
続した太陽電池モジュールに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a solar cell module in which solar cells are connected by interconnectors.
第３図（ａ）、（ｂ）は、例えば太陽電池セルをインタ
コネクタによって接続した従来の太陽電池モジュールを
示す図で、第３図（ａ）は平面構造図であり、第３図（
ｂ）は断面構造図である。3(a) and 3(b) are diagrams showing a conventional solar cell module in which, for example, solar cells are connected by an interconnector, FIG. 3(a) is a plan view of the structure, and FIG.
b) is a cross-sectional structural diagram.
第３図において、１は第１の導電型の半導体基板、２は
第１の導電型の半導体層、３は第２の導電型の半導体層
、４は反射防止膜、５は表面電極で、光電流を収集する
ための集電極（グリッド電極）５ａおよび太陽電池セル
の外部への電気的接続がなされる集電極５ａが連結され
た共通電極（バス電極）５ｂよりなる。６は裏面電極、
７は複数の太陽電池セル、この例では２つの太陽電池セ
ルを電気的に接続するインタコネクタを示す。In FIG. 3, 1 is a semiconductor substrate of a first conductivity type, 2 is a semiconductor layer of a first conductivity type, 3 is a semiconductor layer of a second conductivity type, 4 is an antireflection film, and 5 is a surface electrode. It consists of a common electrode (bus electrode) 5b to which a collector electrode (grid electrode) 5a for collecting photocurrent and a collector electrode 5a for electrical connection to the outside of the solar cell are connected. 6 is the back electrode,
Reference numeral 7 indicates an interconnector that electrically connects a plurality of solar cells, in this example two solar cells.
第３図において、第１の導電型の半導体層２゜第２の導
電型の半導体層３は、ＬＰＥ法、ＭＯＣＶＤ法等の結晶
成長法によって第１の導電型の半導体基板１上に形成さ
れる。そして、反射防止層４、表面電極５．裏面電極６
が形成される。以上のように形成された太陽電池セルは
、溶接等の方法によってインタコネクタ７により他の太
陽電池セルと電気的に接続され、太陽電池モジュールが
形成される。In FIG. 3, a semiconductor layer 2 of a first conductivity type and a semiconductor layer 3 of a second conductivity type are formed on a semiconductor substrate 1 of a first conductivity type by a crystal growth method such as an LPE method or an MOCVD method. Ru. Then, an antireflection layer 4, a surface electrode 5. Back electrode 6
is formed. The solar cell formed as described above is electrically connected to other solar cells by an interconnector 7 by a method such as welding to form a solar cell module.
従来の太陽電池モジュールは思上のように構成されてい
るので、バス電極５ｂおよびインタコネクタ７による接
続部分に入射する光は上部に反射されて太陽電池セルに
入射しないため、光電変換により電流として取り出せず
、実効効率が低くなるという１ｌＪＷｉ点があった。Since the conventional solar cell module is constructed as shown in the diagram, the light that enters the connection part between the bus electrode 5b and the interconnector 7 is reflected at the top and does not enter the solar cell, so it is converted into electric current by photoelectric conversion. There was a 1lJWi point where it could not be taken out and the effective efficiency would be low.
この発明は、上記のような問題点を解消するためになき
れなもので、バス電極およびインタコネクタによる接続
部分に入射する光も有効に利用し、実効効率の高い太陽
電池モジュールを得ることを目的とする。This invention was made in order to solve the above-mentioned problems, and it is possible to obtain a solar cell module with high effective efficiency by effectively utilizing the light incident on the connection part by bus electrodes and interconnectors. purpose.
この発明に係る太陽電池モジュールは、隣り合う一方の
太陽電池セルの裏面電極にインタコネクタの一端を接続
し、この接続部からインタコネクタを垂直に折り曲げて
、この太陽電池セルの端面に沿うように伸ばし、さらに
この太陽電池セル表面より高い位置で４５°以下の鋭角
をなすように隣り合う他方の太陽電池セルの方向に折り
曲げて入射光を反射する反射面とし、さらに前記インタ
コネクタの他端を折り曲げて他方の太陽電池セルのバス
電極に接続したものである。In the solar cell module according to the present invention, one end of the interconnector is connected to the back electrode of one of the adjacent solar cells, and the interconnector is bent perpendicularly from this connection part so as to fit along the end surface of the solar cell. Stretch it out, and then bend it in the direction of the other adjacent solar cell so as to form an acute angle of 45° or less at a position higher than the surface of the solar cell to form a reflective surface that reflects incident light, and furthermore, the other end of the interconnector It is bent and connected to the bus electrode of the other solar cell.
この発明における太陽電池モジュールは、バス電極とイ
ンタコネクタによる接続部分に入射する光を太陽電池セ
ル表面より高い位置で鋭角をなすように形成したインタ
コネクタ端部の反射面にょっ刃太陽電池セルの光を電流
に変えることのできる有効な部分に反射させることによ
り、実質的な有効面積を増やす乙とができ、実効効率を
高くすることができる。The solar cell module according to the present invention has a solar cell that has a reflective surface at the end of the interconnector formed at an acute angle at a position higher than the surface of the solar cell. By reflecting light on an effective part that can convert it into electric current, it is possible to increase the substantial effective area and increase the effective efficiency.
以下、この発明の一実施例を図面について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図（ａ） （ｂ）はこの発明の一実施例を示す
太陽電池モジュールの平面構造図および断面構造図であ
る。第１図において、１は第１の導電型の半導体基板、
２は第１の導電型の半導体層・３は第２の導電型の半導
体層、４は反射防止膜、５は表面電極で、グリッド電極
５ａとバス電極５ｂとからなる。６は裏面電極、７はイ
ンタコネクタで、その一端が１つの太陽電池セルの裏面
電極６に接続され、その接続部から垂直に折り曲げられ
、その太陽電池セルの端面に沿うように伸ばし、かつ太
陽電池セル表面より高い位置で４５°以下の鋭角をなす
ように隣の太陽電池セルの方向に折り曲げられて入射光
を電流に変換する太陽電池セルの有効な部分に反射させ
る反射面７ａが形成され、さらに、隣の太陽電池セルの
バス電極５ｂとはバス電極５ｂ上の太陽電池セルの周縁
部に最も遠いところで周縁部の方向に折り曲げられて接
続されている。FIGS. 1(a) and 1(b) are a plan view and a cross-sectional view of a solar cell module showing an embodiment of the present invention. In FIG. 1, 1 is a semiconductor substrate of a first conductivity type;
2 is a semiconductor layer of a first conductivity type, 3 is a semiconductor layer of a second conductivity type, 4 is an antireflection film, and 5 is a surface electrode, which consists of a grid electrode 5a and a bus electrode 5b. 6 is a back electrode, and 7 is an interconnector, one end of which is connected to the back electrode 6 of one solar cell, bent vertically from the connection part, extended along the end surface of the solar cell, and connected to the solar cell. A reflective surface 7a is formed at a position higher than the surface of the battery cell and is bent toward the adjacent solar cell so as to form an acute angle of 45° or less, and reflects incident light to an effective part of the solar cell that converts the incident light into an electric current. Further, the bus electrode 5b of the adjacent solar cell is connected to the peripheral edge of the solar cell on the bus electrode 5b by being bent in the direction of the peripheral edge at the farthest point.
そして、裏面電極６との接続部から鋭角をなす頂点部分
、すなわち垂直部分７ｂはメツシュ構造となっており、
太陽電池セルを接続するときの機械的ストレスを低減す
る構成となっている。The apex portion forming an acute angle from the connection portion with the back electrode 6, that is, the vertical portion 7b has a mesh structure.
The structure is designed to reduce mechanical stress when connecting solar cells.
上記実施例に示した第１図の構造かもわかるように、こ
の実施例においては、バス電極５ｂおよびインタコネク
タ７による接続部に入射した光を太陽電池セルより高い
位置で鋭角をなすように形成したインタコネクタ７の反
射面によって太陽電池セルの光を電流に変換する有効な
部分に反射させることにより有効面積を増やすことがで
き、実効効率を高くすることができる。As can be seen from the structure of FIG. 1 shown in the above embodiment, in this embodiment, the light incident on the connection portion between the bus electrode 5b and the interconnector 7 is formed so as to form an acute angle at a position higher than the solar cell. The reflective surface of the interconnector 7 reflects light from the solar cell to an effective portion that converts it into current, thereby increasing the effective area and increasing the effective efficiency.
また、インタコネクタ７の垂直部分７ｂをメツシュ構造
とすることにより、インタコネクタ７で太陽電池セルを
接続するときの機械的ストレスを減らすことができ、太
陽電池セルの熱サイクル試験等での特性劣化、太陽電池
セルの割れなどを減らし、歩留りや信頼性を向上するこ
とができる。In addition, by forming the vertical portion 7b of the interconnector 7 into a mesh structure, it is possible to reduce mechanical stress when connecting solar cells with the interconnector 7, thereby reducing the characteristic deterioration of the solar cells during thermal cycle tests, etc. , it is possible to reduce cracks in solar cells and improve yield and reliability.
なお、上記実施例ではバス電極５ｂとインタコネクタ７
との接続部が太陽電池セルの一辺の長さに近い太陽電池
セルについて説明したが、バス電極５ｂとインタコネク
タ７との接続部が小さい太陽電池セルにおいても、第２
図（ａ） （ｂ）に示すように、バス電極５Ｃへの
接続部と同じ幅のインタコネクタ７を太陽電池セルより
高い位置で鋭角となる部分を形成することにより、イン
タコネクタ７で接続した部分に関して同様の効果が得ら
れる。Note that in the above embodiment, the bus electrode 5b and the interconnector 7
Although the description has been made of a solar cell in which the connection part between the bus electrode 5b and the interconnector 7 is close to the length of one side of the solar cell cell, even in a solar cell in which the connection part between the bus electrode 5b and the interconnector 7 is small, the second
As shown in Figures (a) and (b), the interconnector 7, which has the same width as the connection part to the bus electrode 5C, is connected by forming an acute angle part at a position higher than the solar cell. A similar effect can be obtained with respect to parts.
思上説明したように、この発明は、隣り合う一方の太陽
電池セルの裏面電極にインタコネクタの一端を接続し、
この接続部からインタコネクタを垂直に折り曲げて、こ
の太陽電池セルの端面に沿うように伸ばし、さらにこの
太陽電池セル表面より高い位置で４５°息下の鋭角をな
すように隣り合う他方の太陽電池セルの方向に折り曲げ
て入射光を反射する反射面とし、さらにインタコネクタ
の他端を折り曲げて他方の太陽電池セルのバス電極に接
続したので、入射光を有効に利用し、実効効率の高い太
陽電池モジュールを得ることができる効果が得られる。As explained above, this invention connects one end of the interconnector to the back electrode of one adjacent solar cell,
Bend the interconnector vertically from this connection part, extend it along the end face of this solar cell, and then attach it to the other adjacent solar cell so that it forms an acute angle of 45° at a position higher than the surface of this solar cell. By bending it in the direction of the cell to create a reflective surface that reflects incident light, and further bending the other end of the interconnector and connecting it to the bus electrode of the other solar cell, the incident light can be used effectively and solar panels with high effective efficiency can be used. The effect that a battery module can be obtained is obtained.
第１図（ａ） （ｂ）はこの発明の一実施例による
太陽電池モジュールを示す平面構造図および断面構造図
、第２図（ａ）、（ｂ）はこの発明の他の実施例を示す
平面構造図および断面構造図、第３図（ａ）、（ｂ）は
従来の太陽電池モジュルを示す平面構造図および断面構
造図である。
図において、１は第１の導電型の半導体基板、２は第１
の導電型の半導体層、３は第２の導電型の半導体層、４
は反射防止膜、５は表面電極（５ａはグリッド電極、５
ｂはバス電極）、６は裏面電極、７はインタコネクタ、
７ａは反射面、７ｂは垂直部分である。
なお、各図中の同一符号は同一または相当部分を示す。
代理人 大 岩 増 雄 （外２名）第１図
第２図
５Ｃバス電」にFIGS. 1(a) and 1(b) are plan view and cross-sectional structural views showing a solar cell module according to one embodiment of the present invention, and FIGS. 2(a) and (b) show another embodiment of the present invention. FIGS. 3(a) and 3(b) are a plan view and a cross-sectional view of a conventional solar cell module. In the figure, 1 is a semiconductor substrate of a first conductivity type, 2 is a first conductivity type semiconductor substrate, and 2 is a first conductivity type semiconductor substrate.
3 is a semiconductor layer of a second conductivity type; 4 is a semiconductor layer of a second conductivity type;
5 is an anti-reflection film, 5 is a surface electrode (5a is a grid electrode, 5 is a
b is the bus electrode), 6 is the back electrode, 7 is the interconnector,
7a is a reflective surface, and 7b is a vertical portion. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent: Masuo Oiwa (2 others) Figure 1 Figure 2 5C bus tram”
Claims (1)
って接続した太陽電池モジュールにおいて、隣り合う一
方の太陽電池セルの裏面電極に前記インタコネクタの一
端を接続し、この接続部から前記インタコネクタを垂直
に折り曲げて、この太陽電池セルの端面に沿うように伸
ばし、さらにこの太陽電池セル表面より高い位置で４５
゜以下の鋭角をなすように隣り合う他方の太陽電池セル
の方向に折り曲げて入射光を反射する反射面とし、さら
に前記インタコネクタの他端を折り曲げて前記他方の太
陽電池セルのバス電極に接続したことを特徴とする太陽
電池モジュール。In a solar cell module in which a plurality of parallel solar cells are connected by an interconnector, one end of the interconnector is connected to the back electrode of one of the adjacent solar cells, and the interconnector is vertically connected from this connection part. Bend it and stretch it along the end face of this solar cell, and then stretch it at a position higher than the surface of this solar cell.
The interconnector is bent in the direction of the other adjacent solar cell so as to form an acute angle of less than 1000 degrees to form a reflective surface that reflects incident light, and the other end of the interconnector is further bent and connected to the bus electrode of the other solar cell. A solar cell module characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2157910A JPH0448660A (en) | 1990-06-14 | 1990-06-14 | Solar battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2157910A JPH0448660A (en) | 1990-06-14 | 1990-06-14 | Solar battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448660A true JPH0448660A (en) | 1992-02-18 |
Family
ID=15660124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2157910A Pending JPH0448660A (en) | 1990-06-14 | 1990-06-14 | Solar battery module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448660A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0621501A (en) * | 1992-03-31 | 1994-01-28 | Canon Inc | Solar cell module and manufacture thereof |
| JP2005243972A (en) * | 2004-02-26 | 2005-09-08 | Kyocera Corp | Solar cell module |
| JP2008159895A (en) * | 2006-12-25 | 2008-07-10 | Sanyo Electric Co Ltd | Solar cell and solar cell module |
| US10847695B2 (en) | 2015-02-27 | 2020-11-24 | Nichia Corporation | Light emitting device |
-
1990
- 1990-06-14 JP JP2157910A patent/JPH0448660A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0621501A (en) * | 1992-03-31 | 1994-01-28 | Canon Inc | Solar cell module and manufacture thereof |
| JP2005243972A (en) * | 2004-02-26 | 2005-09-08 | Kyocera Corp | Solar cell module |
| JP4570373B2 (en) * | 2004-02-26 | 2010-10-27 | 京セラ株式会社 | Solar cell module |
| JP2008159895A (en) * | 2006-12-25 | 2008-07-10 | Sanyo Electric Co Ltd | Solar cell and solar cell module |
| US8481844B2 (en) | 2006-12-25 | 2013-07-09 | Sanyo Electric Co., Ltd. | Solar cell and solar cell module |
| US10847695B2 (en) | 2015-02-27 | 2020-11-24 | Nichia Corporation | Light emitting device |
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