JPH03239376A - Solar cell module - Google Patents
Solar cell moduleInfo
- Publication number
- JPH03239376A JPH03239376A JP2035273A JP3527390A JPH03239376A JP H03239376 A JPH03239376 A JP H03239376A JP 2035273 A JP2035273 A JP 2035273A JP 3527390 A JP3527390 A JP 3527390A JP H03239376 A JPH03239376 A JP H03239376A
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- bus bar
- stainless steel
- electrode
- steel substrate
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 51
- 229910001220 stainless steel Inorganic materials 0.000 claims description 34
- 239000010935 stainless steel Substances 0.000 claims description 34
- 239000004065 semiconductor Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 12
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- 229920005989 resin Polymers 0.000 description 15
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- 238000000034 method Methods 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 229910021417 amorphous silicon Inorganic materials 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
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- 239000004020 conductor Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
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- 229910052709 silver Inorganic materials 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000005566 electron beam evaporation Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
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- 238000010248 power generation Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- GHEZEZPMRBDFOI-UHFFFAOYSA-L [Se](=O)([O-])[O-].[In+3].[Cu+2] Chemical compound [Se](=O)([O-])[O-].[In+3].[Cu+2] GHEZEZPMRBDFOI-UHFFFAOYSA-L 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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- 238000009792 diffusion process Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
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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］
本発明は、ステンレス基板上に形成された太陽電池素子
を並列に接続した太陽電池に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a solar cell in which solar cell elements formed on a stainless steel substrate are connected in parallel.
［従来技術］
最近、ＣＯ２の増加による温室効果で地球の温暖化か生
しることが予測され、クリーンなエネルギーの要求かま
すます高まっている。またＣＯ２を排出しない原子力発
電も、安全性を疑問視する声もあり、より安全性の高い
クリーンなエネルギーか望まれている。[Prior Art] Recently, it has been predicted that the greenhouse effect caused by the increase in CO2 will cause global warming, and the demand for clean energy is increasing. There are also voices questioning the safety of nuclear power generation, which does not emit CO2, and there is a desire for safer, cleaner energy.
将来期待されているクリーンなエネルギーの中でも、特
に太陽電池はそのクリーンさと安全性と取扱い易さから
期待か大きい。Among the clean energy sources that are expected to grow in the future, solar cells are particularly promising because of their cleanliness, safety, and ease of handling.
各種太陽電池の中て、非晶質シリコンや銅インジュウム
セレナイト等は大面積に製造てき、製造コストも安価で
あることから、熱心に研究されている。Among various solar cells, amorphous silicon, copper indium selenite, etc. have been manufactured in large areas and are inexpensive to manufacture, and are therefore being actively researched.
更に、太陽電池の中ても、耐候性、耐衝撃性、可どう性
に優れていることから、基板材にステンレス等の金属基
板を用いる場合がある。Furthermore, among solar cells, metal substrates such as stainless steel are sometimes used as substrate materials because of their excellent weather resistance, impact resistance, and flexibility.
従来、ステンレス基板上に形成された太陽電池素子を並
列配線した太陽電池では、配線部の電流損失をてきるた
け少なくするためにステンレス基板面の両端部に上部電
極のための集電用バスバーか設けられていた。上記集電
用バスバーの材料としては、比抵抗の低いＡＩ。Conventionally, in solar cells in which solar cell elements formed on a stainless steel substrate are wired in parallel, current collection bus bars for upper electrodes are installed at both ends of the stainless steel substrate surface in order to minimize current loss in the wiring section. It was set up. The material for the current collecting bus bar is AI, which has a low specific resistance.
Ｃｕ、Ａｇ等か使用されている。Cu, Ag, etc. are used.
第２図は、同・ステンレス基板上に分割された複数の太
陽電池素子を、並列に集積化した従来の太陽電池の該略
図て、光入射側と反対側のステンレス基板面の両端部に
上部電極からの集電用バスバーか、没けられていた。第
２図（ａ）は光入射側の平面図、（ｂ）は裏面の平面図
、（ｃ）は（ａ）図Ｃ−Ｄ間の断面構成図である。第２
図に於て、２００はステンレス基板２０５はｆ部電極側
集電用バスバー、２１１は同一ステンレス基板上に分割
された太陽電池素子、２０４はフィンカー電極、２０１
は下部電極としての金属屑、２０２は光電変換部材とし
ての半導体層、２０３は上部電極としての透明電極層、
２０９はステンレス基板両端にある下部電極集電用バス
バーを接続するバスバー、２０８は複数の太陽電池素ｆ
−のフィンカー電極をつなぐバスバー２０６は複数本の
２０８をまとめて集電するバスバー、２０７は２０９と
２００のステンレス基板か導通するのを防ぐための絶縁
性樹脂、２１０は２（）６と２０５の導通な防ぐための
絶縁材である。上記構造の太陽電池では、２０５の上に
２１０，２０５，２０８を重ねるためにフィンガー電極
からの集電用バスバーの設置−■二程か複雑であること
、裏面側の凹凸が大きいため充填材の使用量か多いこと
なと、ステンレス基板使用の太陽電池のゴス１〜高の要
因の一つになっていた。Figure 2 is a schematic diagram of a conventional solar cell in which multiple solar cell elements are integrated in parallel on the same stainless steel substrate. The bus bar for collecting current from the electrodes had been sunk. FIG. 2(a) is a plan view of the light incident side, FIG. 2(b) is a plan view of the back surface, and FIG. 2(c) is a sectional configuration diagram taken along line C-D in FIG. 2(a). Second
In the figure, 200 is a stainless steel substrate 205, which is a current collecting bus bar on the f part electrode side, 211 is a solar cell element divided on the same stainless steel substrate, 204 is a fincar electrode, and 201
202 is a semiconductor layer as a photoelectric conversion member; 203 is a transparent electrode layer as an upper electrode;
209 is a bus bar connecting the lower electrode current collecting bus bars on both ends of the stainless steel substrate, and 208 is a plurality of solar cell elements f.
- The bus bar 206 connecting the fin car electrodes is a bus bar that collects current from multiple 208. 207 is an insulating resin to prevent conduction between the stainless steel substrates 209 and 200. 210 is the bus bar between 2 () 6 and 205. It is an insulating material to prevent conduction. In the solar cell with the above structure, in order to stack 210, 205, and 208 on top of 205, the installation of the current collection bus bar from the finger electrodes is approximately two or so complicated, and the unevenness of the back side is large, so the filling material is The large amount used was one of the reasons why solar cells using stainless steel substrates were ranked 1 to 1.
そのため、より簡単な構成て、製造コス１への安価な太
陽電池が望まれていた。Therefore, a solar cell with a simpler structure and lower manufacturing cost has been desired.
［発明の目的］
本発明は、■一連の従来の欠点を解決し、簡単な構造で
、かつ製造工程も簡単な、安価な、並列に集積化した太
陽電池モジュールを提供することを目的とする。[Objective of the Invention] The purpose of the present invention is to (1) solve a series of conventional drawbacks and provide an inexpensive, parallel-integrated solar cell module that has a simple structure and a simple manufacturing process. .
［発明の構成及び作用］
本発明者は、−Ｊ二記従来の欠点を解決すべく、鋭意研
究を重ねた結果、並列に集積化したステンレス基板太陽
電池素モジュールに於て、絶縁基体−Ｌに太陽電池素子
を形成したステンレス基板を配置し、該基板より離れた
側部にＬ部電極からの電流を最終的に集電するバスバー
を設けることによって、該り都電極用集電バスバーへの
接続配線か太陽電池基板表側てでき、モジュール構造も
筒中になり、製逍丁程か簡略化てきることがわかった。[Structure and operation of the invention] As a result of extensive research in order to solve the conventional drawbacks mentioned in -J2, the present inventor has discovered that in a stainless steel substrate solar cell module integrated in parallel, an insulating substrate -L By arranging a stainless steel substrate on which a solar cell element is formed on the substrate, and providing a bus bar that ultimately collects the current from the L electrode on the side far from the substrate, it is possible to connect the current to the current collecting bus bar for the capital electrode. It was found that the connection wiring could be made on the front side of the solar cell substrate, and the module structure would be inside the cylinder, simplifying the manufacturing process.
本発明は、ステンレス基板上に下部電極としての金属電
極層、光電変換部材としての半導体層、上部電極として
の透明電極層、透明電極からの電流を集電するフィンガ
ー状電極か順次形成された太陽電池素子を並列接続した
太陽電池モジュールに於て、該ステンレス基板の周辺に
、複数個のフィンガー電極が接続されたバスバーを複数
本接続して上部電極からの電流を集電するバスバーか、
ステンレス基板と接触することなく設けられたことを特
徴とする太陽電池モジュールである。The present invention provides a solar cell in which a metal electrode layer as a lower electrode, a semiconductor layer as a photoelectric conversion member, a transparent electrode layer as an upper electrode, and a finger-shaped electrode for collecting current from the transparent electrode are sequentially formed on a stainless steel substrate. In a solar cell module in which battery elements are connected in parallel, a plurality of busbars to which a plurality of finger electrodes are connected are connected around the stainless steel substrate to collect current from the upper electrode;
This solar cell module is characterized in that it is installed without contacting a stainless steel substrate.
第１図（ａ）は、本発明により作製される並列に集積化
した太陽電池モジュールの表面の平面図の一例゛Ｃ１（
ｂ）は（ａ）図Ａ−Ｂ間の断面構成図で、モジュール化
時の表面被覆や出力端子の取り出し等を含んでいる。第
１図に於て、１００はステンレス基板、１０１は１部電
極としての金属層、１０２は光電変換部材としての半導
体層、１０３は４二部電極としての透明電極層、１０４
はフィンガー電極、１０５ば下部電極からの集電用バス
バー、１０８は複数の太陽電池素子のフィンガー電極を
つなぐバスバー、１０６は複数本の１０８をまとめて集
電する上部電極側バスバ１０７は１０８とステンレス基
板１００が導通ずるのを防ぐための絶縁性樹脂、１０９
は太陽電池の凹凸を埋めるための充填材、１１０は水分
と気体を透過しにくい絶縁性基体、１１１は透光性表面
保護材、１１２はリート線、１１３はシーリンク材、１
１４は分割された太陽電池素子である。FIG. 1(a) is an example of a plan view of the surface of a solar cell module manufactured in accordance with the present invention that is integrated in parallel.
(b) is a cross-sectional configuration diagram taken along the line A-B in (a), and includes surface coating and output terminal extraction during modularization. In FIG. 1, 100 is a stainless steel substrate, 101 is a metal layer as a one-part electrode, 102 is a semiconductor layer as a photoelectric conversion member, 103 is a transparent electrode layer as a two-part electrode, 104
105 is a finger electrode, 105 is a bus bar for collecting current from the lower electrode, 108 is a bus bar that connects the finger electrodes of multiple solar cell elements, 106 is a bus bar on the upper electrode side that collects current from multiple 108s together, and 107 is made of stainless steel. Insulating resin for preventing conduction of the substrate 100, 109
1 is a filler for filling the unevenness of the solar cell, 110 is an insulating substrate that is difficult for moisture and gas to pass through, 111 is a transparent surface protection material, 112 is a Riet wire, 113 is a sealing material, 1
14 is a divided solar cell element.
本発明による第１図の太陽電池の作製方法を以下に説明
する。ステンレス基板１００に、金属層１０１、半導体
層１０２、透明電極層１０３を順次形成した太陽電池の
透明電極層の一部を除去して、複数の太陽電池素子１１
４に分割する。次に、各太陽電池素子の透明電極Ｈにフ
ィンカー電極１（Ｊ４を形成した後、裏面のステンレス
基板面に、テープ状良導体から成るバスバー１０５を接
続し、ソート線引き出し用開口部を設けた絶縁性基体１
１０と充填材の上に配置する。ついて、−１一部電極か
らの電流を最終的にまとめて集電するバスバー１（）６
を、ステンレス基板１００と接触しないように配置した
後、絶縁樹脂１０７でステンレス基板端部を被覆する。A method for manufacturing the solar cell shown in FIG. 1 according to the present invention will be described below. A plurality of solar cell elements 11 are obtained by removing a part of the transparent electrode layer of a solar cell in which a metal layer 101, a semiconductor layer 102, and a transparent electrode layer 103 are sequentially formed on a stainless steel substrate 100.
Divide into 4. Next, after forming the finker electrode 1 (J4) on the transparent electrode H of each solar cell element, a bus bar 105 made of a tape-shaped good conductor is connected to the back surface of the stainless steel substrate, and an insulator with an opening for drawing out the sorting lines is connected. sexual substrate 1
10 and placed on top of the filler. Then, there is a bus bar 1 ( ) 6 that ultimately collects the current from the -1 partial electrodes.
are arranged so as not to come into contact with the stainless steel substrate 100, and then the ends of the stainless steel substrate are covered with an insulating resin 107.
その後、基板トて同し列に位置する太陽電池素子を並列
接続するバスバー１０８をフィンカー電極１０４とバス
バー１０６に接続する。次に、充填材と表面保護材で表
面保護材で表面を被覆する。最後に、出力端子となるバ
スバー１０５と１０６にリード線を接続し、リート縁取
り出し箇所をシーリング材てシールして、本発明の太陽
電池モジュールを得る。Thereafter, a bus bar 108 that connects solar cell elements located in the same row on the substrate in parallel is connected to the fin car electrode 104 and the bus bar 106. Next, the surface is coated with a filler and a surface protectant. Finally, lead wires are connected to bus bars 105 and 106, which serve as output terminals, and the lead edge extraction portion is sealed with a sealant to obtain the solar cell module of the present invention.
本発明により、上部電極からの電流を最終的に集電する
ためのバスバーを、複数の太陽電池素子が形成されたス
テンレス基板の側部に設＆−することによって、従来の
太陽電池モジュールにお番プる裏面ての配線を減らし、
裏面部の凹凸を減少させることができる。あわせて、充
填材の使用量を減らし、モジュール化工程の簡略化と自
動化も容易になる。According to the present invention, a bus bar for ultimately collecting current from the upper electrode is installed on the side of a stainless steel substrate on which a plurality of solar cell elements are formed, thereby adding to the conventional solar cell module. Reduce wiring on the back side of the
It is possible to reduce unevenness on the back surface. At the same time, the amount of filler used can be reduced, and the modularization process can be simplified and automated.
本発明に用いられる上部電極からの集電用バスバー１０
６は、比抵抗の低い良導体材料から成り、良導体材料と
しては、銅、銀、ニッケル等の金属箔か用いられる。−
１−、部金属箔は他の金属やハンダか積層されていても
よい。他のバスバー１０５ 、１０８のいずれも、上記
本発明に用いられるバスバー１０６と同様の良導体材料
から戒っている。Bus bar 10 for collecting current from the upper electrode used in the present invention
6 is made of a good conductor material with low specific resistance, and as the good conductor material, metal foil such as copper, silver, nickel, etc. is used. −
1-, the metal foil may be laminated with other metals or solder. Both of the other bus bars 105 and 108 are made of the same good conductive material as the bus bar 106 used in the present invention.
下部電極からの集電用バスバー１０６とステンレス基板
１００の接続は、レーザーによる重ね溶接、ハンダ付け
、導電性接着剤による接着等の方法かある。ハンダ付け
の場合には、ステンレス基板の接合部表面を荒らすこと
、ステンレス用ハンタフラツクスを用いることなとが必
要である。上記導電性接着剤は金属粉末、導電性カーボ
ンフラッフ、炭素ｍ維等の導電性フィラーを高分子化合
物に添加したものである。The current collecting bus bar 106 from the lower electrode and the stainless steel substrate 100 can be connected by lap welding using a laser, soldering, adhesion using a conductive adhesive, or the like. In the case of soldering, it is necessary to roughen the joint surface of the stainless steel substrate and to use hunter flux for stainless steel. The above-mentioned conductive adhesive is made by adding a conductive filler such as metal powder, conductive carbon fluff, carbon fiber, etc. to a polymer compound.
１０７の絶縁樹脂には、ポリエステル、ポリエステルイ
ミド、ポリイミド、ポリウレタン、シリコーン、エポキ
シ、アクリル樹脂、カラスクロス等がある。１０７の絶
縁樹脂の形成力法は、樹脂溶液のスプレーやティップ法
による塗布、粘着剤イ・１フイルムを貼伺ける等の方法
がある。Examples of the insulating resin No. 107 include polyester, polyesterimide, polyimide, polyurethane, silicone, epoxy, acrylic resin, and crow cloth. Methods for forming the insulating resin No. 107 include methods such as spraying a resin solution, coating with a tip method, and pasting an adhesive film.
本発明て用いられる太陽電池素子の金属電極層１０］の
材質としては、Ｔｉ、Ｃｒ、Ｍｏ。The materials of the metal electrode layer 10 of the solar cell element used in the present invention include Ti, Cr, and Mo.
Ｗ、ＡＩ、Ａｇ、Ｎｉ等か用いられ、形成力法としては
抵抗加熱蒸着、電子ビーム蒸着、スパッタリンク法等か
ある。W, AI, Ag, Ni, etc. are used, and forming force methods include resistance heating evaporation, electron beam evaporation, sputter link method, etc.
本発明で用いられる太陽電池素子の光電変換部材として
の半導体層１０２には、ｐｉｎ接合非晶質シリコン、Ｐ
ｎ接合多結晶シリコン、Ｃｕ１ｎｓｅ２／Ｃｄｓ等の化
合物半導体か挙げられる。The semiconductor layer 102 as a photoelectric conversion member of the solar cell element used in the present invention includes pin junction amorphous silicon, P
Examples include n-junction polycrystalline silicon and compound semiconductors such as Cu1nse2/Cds.
上記半導体層は、非晶質シリコンの場合、シランカス等
のプラズマＣＶＤにより、多結晶シリコンの場合、溶融
シリコンのシート化によりＣｕ １ｎｓｅ２／Ｃｄｓの
場合には、電子ビーム蒸着、スパッタリング、電析（電
解液の電気分解による析出）等の方法で、形成される。In the case of amorphous silicon, the above-mentioned semiconductor layer is formed by plasma CVD such as Silancus, in the case of polycrystalline silicon, formed into a sheet of molten silicon, and in the case of Cu 1nse2/Cds, electron beam evaporation, sputtering, electrodeposition (electrodeposition). It is formed by a method such as deposition by electrolysis of a liquid.
本発明て用いられる太陽電池素子の透明電極１０３に用
いる材料としては、１ｎ２０ｓ、 Ｓｎｏ□。Materials used for the transparent electrode 103 of the solar cell element used in the present invention include 1n20s and Sno□.
Ｉｎ２Ｏ３−８ｎｏ２．ＺｎＯ，Ｔｉｏ２．Ｃｄ２．Ｓ
ｎｏ、＋高濃度不純物トープした結晶性半導体層等があ
り、形成力法としては抵抗加熱蒸着、電子ビーム蒸着、
スパッタリンク法、スプレー法、ＣＶＤ法、不純物拡散
等がある。透明電極ｌｌ１１３の−・部を除去して太陽
電池素子に分離する方法には、ＦｃＣ１，、ｌｌＣｌを
含むエツチングペーストのスクリーン印刷等てパターン
ニンクする方法などがある。In2O3-8no2. ZnO, Tio2. Cd2. S
There are crystalline semiconductor layers doped with high-concentration impurities, etc. Formation methods include resistance heating evaporation, electron beam evaporation,
Examples include a sputter link method, a spray method, a CVD method, and an impurity diffusion method. A method of removing the - part of the transparent electrode 113 and separating it into solar cell elements includes a patterning method such as screen printing of an etching paste containing FcC1, 11Cl.
フィンガー電極１０４は導電性樹脂やハンダペーストで
形成され、導電性樹脂は、微粉末状の銀、金、銅、ニッ
ケル、カーボン等をバインターポリマーと分散させたも
のか使用される。The finger electrode 104 is formed of a conductive resin or solder paste, and the conductive resin used is one in which finely powdered silver, gold, copper, nickel, carbon, etc. are dispersed with a binder polymer.
上記バインダーポリマーとしては、ボリエステル、エポ
キシ、アクリル、アルキド、ポリビニルアセデート、ゴ
ム、ウレタン、フェノール等の樹脂かある。フィンカー
電極１（）４は、−に記導電性樹脂のスクリーン印刷算
の方法で作製される。同列に（）７置する複数個のフィ
ンガー電極をつなぐバスパー１０８は、導電性接着剤な
とて接続される。Examples of the binder polymer include resins such as polyester, epoxy, acrylic, alkyd, polyvinyl acedate, rubber, urethane, and phenol. The finker electrode 1 ( ) 4 is manufactured by the screen printing method of conductive resin described in -. A busper 108 connecting a plurality of finger electrodes arranged in the same row is connected using a conductive adhesive.
バスバー１０６と １０８は導電性接着剤、ハンター、
レーザー溶接などで、接続される。Busbars 106 and 108 are made of conductive adhesive, Hunter,
They are connected by laser welding, etc.
充填材１０９としてはエチレン−酢酸ビニル共重合体、
ポリビニルアセデート、シリコーン樹脂等が挙げられる
。As the filler 109, ethylene-vinyl acetate copolymer,
Examples include polyvinyl acedate, silicone resin, and the like.
水分と気体と透過性の少ない絶縁性基体１１０には、フ
チルゴム、絶縁樹脂被覆したアルミニウム基等の金属板
、またはポリフッ化ヒニリテン等のフッ素樹脂フィルム
やポリエステル、ポリエチレン、ポリプロピレンの樹脂
フィルムてうくネー１−されたアルミ箔等がある。The insulating substrate 110, which has low permeability to moisture and gas, may include phtyl rubber, a metal plate such as an aluminum base coated with an insulating resin, a fluororesin film such as polyfluorinated polyethylene, or a resin film made of polyester, polyethylene, or polypropylene. - There are aluminum foils etc.
表面保護層Ｉ１１は、透光性かあり紫外線やオソンに安
定な耐候性かあることか必要てあり、フッ素樹脂フィル
ム／エチレン−酢酸ビニル共重合体の二層構造のもの（
光入射側はフッ素樹脂フィルム）、シリコーン樹脂、フ
ッ素樹脂塗料等か挙げられる。The surface protective layer I11 needs to be transparent, stable against ultraviolet rays and ozone, and has a two-layer structure of fluororesin film/ethylene-vinyl acetate copolymer (
On the light incident side, examples include fluororesin film), silicone resin, and fluororesin paint.
本発明に用いられるシーリンク材には、水分等を透過し
ないシリコーン樹脂やツチルゴム等かある。Sealink materials used in the present invention include silicone resins and tutyl rubber that do not allow moisture to pass through.
なお、本発明は第１図に示した太陽電池モジュールの構
成のみに限定されるものてはない。Note that the present invention is not limited to the configuration of the solar cell module shown in FIG. 1.
［実施例］
以下、実施例に基づき本発明の詳細な説明する。なお、
本発明はこれらの実施例に限定されるものではない。[Examples] Hereinafter, the present invention will be described in detail based on Examples. In addition,
The present invention is not limited to these examples.
第１図の構成の本発明の太陽電池に於て、半導体層１０
２か非晶質シリコンである場合の、作製方法を順次説明
する。In the solar cell of the present invention having the structure shown in FIG.
The manufacturing method in the case of using amorphous silicon will be sequentially explained.
ます、洗浄したロール状ステンレス基板」二に、ロール
ツーロール法て、Ｓｉを１％含有するＡ Ｉ １０１を
スパッタ法により膜厚５０００蒸着し、Ｓ ｉ １＋
、＋ 、 Ｐ Ｈ：ｌ 、 Ｂ ２１＋ ６ 、 Ｈ□
防ガスのプラズマ１
ＣＶＤにより、膜厚１０００〜４０００のｐ／ｉ／ｎの
非晶質シリコン層を２層積み正ねてｐ／ｉ／ｎ ／ ｐ
／ ｉ ／ ｎの光電変換部としての半導体層１０２
を形成した後、膜厚８００のＩＴ○１０３を抵抗加熱基
若て形成した。更に、ＩＴ○のエツチンク剤（ＦｅＣｌ
２ 、 ｔｌｃＬ ）含有ペーストのスクリーン印刷に
より０７０層の一部を除太し、各太陽電池素子に分離し
た６ （ト記構成の太陽電池素子のＡ Ｉ １０１と非
晶質シリコン層１０２との間にシャント防止層としてＺ
ｎＯを形成してもよい。）
次に、フィンガー幅０，２■のフィンガー電極＋０４な
銀ペーストのスクリーン印刷て形成した。その後、非発
電領域の光入射と反対側のステンレス基板両端部に幅１
９ｍｍ、厚みＱ、２ｍｍの銅箔テープ１０５にレーサー
光を照射し接合し、上部電極からの電流を最終的に集電
するバスバー１０６とともに、絶縁性基体１１０Ｌに配
置した。該絶縁性基体は、アルミニウム基板をポリフッ
化ヒニリテン樹脂フィルムてラミネート ２
したものて、その上に充填材シートとしてエチレン−酢
酸ビニル共重合体が重ねられ、リード線か取り出される
位置に、開口部が設けられである。First, on the cleaned rolled stainless steel substrate, a 5,000-thick film of A I 101 containing 1% Si was deposited by sputtering using a roll-to-roll method to form a Si 1+
, + , PH:l , B 21+ 6 , H□
Gas-proof plasma 1 Two layers of p/i/n amorphous silicon layers with a film thickness of 1000 to 4000 are stacked together by CVD to form p/i/n/p.
/i/n semiconductor layer 102 as a photoelectric conversion unit
After forming, a resistance heating base was formed using IT○103 having a film thickness of 800 mm. Furthermore, IT○ etching agent (FeCl
A part of the 070 layer was thinned by screen printing of a paste containing 2, tlcL) and separated into each solar cell element. Z as a shunt prevention layer
nO may also be formed. ) Next, finger electrodes with a finger width of 0.2 mm were formed by screen printing +04 silver paste. After that, a width of 1 cm was applied to both ends of the stainless steel substrate on the opposite side of the light incidence in the non-power generation area.
A copper foil tape 105 of 9 mm, thickness Q, and 2 mm was irradiated with a laser beam and bonded, and placed on an insulating substrate 110L together with a bus bar 106 that ultimately collects current from the upper electrode. The insulating substrate is made by laminating an aluminum substrate with a polyhynyritene fluoride resin film, on which an ethylene-vinyl acetate copolymer is layered as a filler sheet, and an opening is formed at the position where the lead wire is taken out. It is provided.
ついて、ステンレス基板両端部の端面な覆うようにポリ
イミドテープ１０７を接着し１幅２．５１、厚ミ０．１
ｍｍのニッケルメッキを施した銅箔１０８を導電性接着
剤てフィンガー電極に接続した後、銅箔１０８の両末端
部をバスパー１０６にレーザーで接合した。Then, polyimide tape 107 was glued so as to cover both ends of the stainless steel substrate, and the width was 2.51 mm and the thickness was 0.1 mm.
After connecting a copper foil 108 plated with nickel to the finger electrode with a conductive adhesive, both ends of the copper foil 108 were bonded to the busper 106 using a laser.
最後に、エチレン−酢酸ビニル共重合体シート１０９と
紫外線吸収剤入りのポリフッ化ビニリデン樹脂フィルム
１１１てラミネートした後、１０５と１０６の出力端子
部よりり−ｌ−線】１２を取り出し、シリコーン樹脂１
１３で封止して、太陽電池素子を複数個並列接続した太
陽電池を得た。また、上記作製方法で１７ｃｍ＋２のサ
フセルのフィンガー電極１０４を８×１０個、計８０並
列列接続した場合、Ａ Ｍ １ 、５１０Ｏｎ＋Ｗ／ｃ
ｍ２の光照射時の開放端電圧Ｖｏｃと短絡電流Ｔｓｃは
、それそれＶｏｃ ＝］、６３Ｖ、 Ｉｓｃ ＝４．８
Ａであった。Finally, after laminating the ethylene-vinyl acetate copolymer sheet 109 and the polyvinylidene fluoride resin film 111 containing an ultraviolet absorber, the -l- wire] 12 is taken out from the output terminals of 105 and 106, and the silicone resin 1
13 to obtain a solar cell in which a plurality of solar cell elements were connected in parallel. Furthermore, when 8×10 17 cm+2 Safcell finger electrodes 104 are connected in parallel in a total of 80 parallel rows using the above manufacturing method, A M 1 , 510 On+W/c
The open circuit voltage Voc and short circuit current Tsc during light irradiation of m2 are as follows: Voc = ], 63V, Isc = 4.8
It was A.
上記太陽電池モジュールの作製方法ては従来に比へて１
丁程少なくなった。The manufacturing method of the solar cell module described above is 1 compared to the conventional method.
It has become slightly less.
なお、上記実施例ては半導体層に非晶質シリコンを用い
た場合に付いて説明したか、これに限定されるものては
なく、他の多結晶シリコンや化合物半導体においても、
本発明は有効である。It should be noted that although the above embodiments have been described with reference to the case where amorphous silicon is used for the semiconductor layer, the present invention is not limited to this, and may also be applied to other polycrystalline silicon or compound semiconductors.
The present invention is effective.
［発明の効果］
本発明によれば、従来のステンレス基板］；の太陽電池
素子を並列接続した太陽電池モジュールの欠点を解決し
、上部電極側の集電バスバーを太陽電池基板周辺部に設
けることによって、モジュールの構造と製造工程を簡略
化でき、製造コストも低減てきる。[Effects of the Invention] According to the present invention, the drawbacks of a solar cell module in which solar cell elements of the conventional stainless steel substrate are connected in parallel can be solved, and a current collecting bus bar on the upper electrode side can be provided around the solar cell substrate. This simplifies the module structure and manufacturing process, and reduces manufacturing costs.
第１図（ａ）、（ｂ）は本発明による太陽電池モジュー
ルの一例を示す平面図と断面図、第２図（ａ）、（ｂ）
、（Ｃ）は従来のステンレス基板を用いた太陽電池モジ
ュールの正面図、裏面図及び断面図である。
１００．２００・・・ステンレス基板
１０１．２０１・・・金属層
１０２．２０２・・・半導体層、
１０３．２０３・・・透明電極層、
１０４．２０４・・・フィンガー電極、１０５．２０５
，２０９・・・下部電極側バスバー１０５．２０６・・
・」二部電極側バスバー１０７．２０７・・・絶縁性樹
脂、
１０８．２０８・・・フィンガー電極をつなぐバスバー
２１０・・・絶縁材、
１０９・・・充填材、
１１０・・・絶縁性基体、
ＩＨ・・・表面保護材
＋１２・・・ソート線
１１３・・・シーリンク材
１１４．２１１・・・太陽電池素子。
５
６FIGS. 1(a) and (b) are a plan view and a sectional view showing an example of a solar cell module according to the present invention, and FIGS. 2(a) and (b) are
, (C) are a front view, a back view, and a sectional view of a solar cell module using a conventional stainless steel substrate. 100.200... Stainless steel substrate 101.201... Metal layer 102.202... Semiconductor layer, 103.203... Transparent electrode layer, 104.204... Finger electrode, 105.205
, 209...lower electrode side bus bar 105.206...
・"Two-part electrode side bus bar 107.207...Insulating resin, 108.208...Bus bar 210 connecting finger electrodes...Insulating material, 109...Filling material, 110...Insulating base, IH...Surface protection material +12...Sort line 113...Seal link material 114.211...Solar cell element. 5 6
Claims (1)
電変換部材としての半導体層、上部電極としての透明電
極層、透明電極からの電流を集電するフィンガー状電極
が順次形成された太陽電池素子を並列接続した太陽電池
モジュールに於て、該ステンレス基板の側部に、複数個
のフィンガー電極か接続されたバスバーを複数本接続し
て上部電極からの電流を集電するバスバーが、ステンレ
ス基板と接触することなく設けられたことを特徴とする
太陽電池モジュール。Solar cell elements in which a metal electrode layer as a lower electrode, a semiconductor layer as a photoelectric conversion member, a transparent electrode layer as an upper electrode, and a finger-shaped electrode to collect current from the transparent electrode are sequentially formed on a stainless steel substrate are arranged in parallel. In the connected solar cell module, a bus bar that collects current from the upper electrode by connecting a plurality of finger electrodes or a plurality of connected bus bars to the side of the stainless steel substrate contacts the stainless steel substrate. A solar cell module characterized in that it is installed without any problems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2035273A JPH03239376A (en) | 1990-02-16 | 1990-02-16 | Solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2035273A JPH03239376A (en) | 1990-02-16 | 1990-02-16 | Solar cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03239376A true JPH03239376A (en) | 1991-10-24 |
Family
ID=12437182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2035273A Pending JPH03239376A (en) | 1990-02-16 | 1990-02-16 | Solar cell module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03239376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06275857A (en) * | 1993-03-17 | 1994-09-30 | Nec Corp | Solar battery power supply |
| WO2005038934A1 (en) * | 2003-10-17 | 2005-04-28 | Canon Kabushiki Kaisha | Photovoltaic element and method of producing photovoltaic element |
-
1990
- 1990-02-16 JP JP2035273A patent/JPH03239376A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06275857A (en) * | 1993-03-17 | 1994-09-30 | Nec Corp | Solar battery power supply |
| WO2005038934A1 (en) * | 2003-10-17 | 2005-04-28 | Canon Kabushiki Kaisha | Photovoltaic element and method of producing photovoltaic element |
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