JPH07135334A - Fabrication of solar cell with bypass diode - Google Patents
Fabrication of solar cell with bypass diodeInfo
- Publication number
- JPH07135334A JPH07135334A JP5161171A JP16117193A JPH07135334A JP H07135334 A JPH07135334 A JP H07135334A JP 5161171 A JP5161171 A JP 5161171A JP 16117193 A JP16117193 A JP 16117193A JP H07135334 A JPH07135334 A JP H07135334A
- Authority
- JP
- Japan
- Prior art keywords
- bypass diode
- solar cell
- interconnector
- electrode
- solar
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000007772 electrode material Substances 0.000 claims abstract description 8
- 238000010304 firing Methods 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/142—Energy conversion devices
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、太陽電池セルに関し、
特に太陽電池モジュールに影が生じた場合に発生する大
幅な出力低下や逆バイアス電圧によって太陽電池セルが
過熱し事故を引き起こすことを防止するバイパスダイオ
ードを付した太陽電池セルの製造方法に関する。FIELD OF THE INVENTION The present invention relates to a solar cell,
In particular, the present invention relates to a method of manufacturing a solar battery cell having a bypass diode that prevents a solar battery cell from overheating and causing an accident due to a large output drop or reverse bias voltage that occurs when a shadow occurs on the solar battery module.
【０００２】[0002]
【従来の技術】従来の技術について図３及び図４を参照
して説明する。図３（ａ）及び（ｂ）は従来のバイパス
ダイオード付き太陽電池セルの製造工程を示す断面図、
図４は従来のバイパスダイオードの断面図である。2. Description of the Related Art A conventional technique will be described with reference to FIGS. 3A and 3B are cross-sectional views showing a manufacturing process of a conventional solar cell with a bypass diode,
FIG. 4 is a sectional view of a conventional bypass diode.
【０００３】図３（ａ）の太陽電池セル１０は、Ｐ型Ｓ
ｉウェハ１１上にｎ+層１２が形成されており、この表
裏にそれぞれ表Ａｇ電極１３及び裏Ａｇ電極１４が形成
され、さらにその上に半田ディップ１５が施されてい
る。The solar battery cell 10 shown in FIG. 3A is a P-type S.
An n + layer 12 is formed on an i-wafer 11, a front Ag electrode 13 and a back Ag electrode 14 are formed on the front and back, respectively, and a solder dip 15 is further applied thereon.
【０００４】一方、図４のバイパスダイオード１６は、
Ｐ層１７とｎ+層１８のＰＮ層の表裏にそれぞれ表Ａｇ
電極１９及び裏Ａｇ電極２０が形成され、さらにその上
に半田ディップ１５が施されている。On the other hand, the bypass diode 16 shown in FIG.
On the front and back of the PN layer of the P layer 17 and the n + layer 18, front Ag is provided, respectively.
An electrode 19 and a back Ag electrode 20 are formed, and a solder dip 15 is further applied thereon.
【０００５】従来のバイパスダイオード付き太陽電池セ
ルは、図３（ａ）の半田ディップ済みの太陽電池セル１
０を２００°Ｃに加熱し、セル上の任意の位置に図４の
半田ディップ済みのバイパスダイオード１６を搭載す
る。そして、さらに太陽電池セル１０及びバイパスダイ
オード１６上にインターコネクタ２１をそれぞれのせ
て、各々を半田付けにて接続固定する。The conventional solar cell with a bypass diode is the solar cell 1 with solder dip shown in FIG. 3 (a).
0 is heated to 200 ° C., and the solder-dipped bypass diode 16 of FIG. 4 is mounted at an arbitrary position on the cell. Then, the interconnector 21 is further placed on the solar battery cell 10 and the bypass diode 16, and each is connected and fixed by soldering.
【０００６】[0006]
【発明が解決しようとする課題】ところが、上記した従
来のバイパスダイオード付き太陽電池の製造工程におい
ては、太陽電池セル１０、バイパスダイオード１６、イ
ンターコネクタ２１を同時に加熱して半田付けを行って
いるため、太陽電池セル１０、バイパスダイオード１
６、インターコネクタ２１間の位置ずれが起こりやすく
信頼性が低下する、という問題があった。However, in the manufacturing process of the conventional solar cell with the bypass diode, the solar cell 10, the bypass diode 16, and the interconnector 21 are heated at the same time for soldering. , Solar cell 10, bypass diode 1
6. There was a problem that the positional displacement between the interconnectors 21 is likely to occur and the reliability is lowered.
【０００７】また、位置ずれ防止のためには、組み立て
作業に時間がかかりコストも高くつくという問題もあっ
た。Further, there has been a problem that assembling work is time-consuming and costly in order to prevent the displacement.
【０００８】そこで、本発明の目的は、太陽電池セル、
バイパスダイオード、インターコネクタ間の位置ずれの
ない高信頼性の太陽電池を提供することにある。Therefore, an object of the present invention is to provide a solar cell,
An object of the present invention is to provide a highly reliable solar cell with no displacement between the bypass diode and the interconnector.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するため
に本発明は、太陽電池セルの表面電極上にバイパスダイ
オードが搭載され、該バイパスダイオードの上面にイン
ターコネクタが接続されてなるバイパスダイオード付き
太陽電極セルの製造方法において、前記太陽電池セル上
に表面電極材料を設け該表面電極材料上にバイパスダイ
オードを載置する工程と、前記表面電極材料の焼成によ
って前記バイパスダイオードを固定する工程と、を含ん
でなることを特徴とする。In order to achieve the above-mentioned object, the present invention has a bypass diode in which a bypass diode is mounted on the surface electrode of a solar cell and an interconnector is connected to the upper surface of the bypass diode. In the method of manufacturing a solar electrode cell, a step of providing a surface electrode material on the solar cell and placing a bypass diode on the surface electrode material; a step of fixing the bypass diode by firing the surface electrode material; It is characterized by comprising.
【００１０】また、表面電極への搭載前のバイパスダイ
オードの上面に、予めインターコネクタを熔接によって
接続してなることを特徴とする。Further, an interconnector is previously connected by welding to the upper surface of the bypass diode before being mounted on the surface electrode.
【００１１】[0011]
【作用】以上のように、本発明においては表面電極材料
の焼成とバイパスダイオードの接続固定を同時に行って
おり、インターコネクタの接続はこの工程の後に行う。
つまり、バイパスダイオードと太陽電極セルとが固定さ
れた状態においてインターコネクタを接続するので、従
来のように太陽電池セル、バイパスダイオード、インタ
ーコネクタの３者間の位置ずれが生じることはなく、特
性が不安定となる、信頼性が低下するといった問題は発
生しない。さらに、表面電極焼成は不可欠な工程である
が、この工程と同時にバイパスダイオードを接続固定す
るので、作業の効率化、コストダウンを図れる。As described above, in the present invention, the firing of the surface electrode material and the connection and fixing of the bypass diode are simultaneously performed, and the interconnector is connected after this step.
That is, since the interconnector is connected in a state in which the bypass diode and the solar electrode cell are fixed, there is no positional displacement between the solar battery cell, the bypass diode, and the interconnector as in the conventional case, and the characteristics are improved. Problems such as instability and reduced reliability do not occur. Further, the surface electrode firing is an indispensable step, but since the bypass diode is connected and fixed at the same time as this step, work efficiency and cost reduction can be achieved.
【００１２】また、表面電極への搭載前のバイパスダイ
オードの上面に、予め前記インターコネクタを熔接によ
って接続する方法によれば、太陽電池セルとインターコ
ネクタ接続済みのバイパスダイオードとを正確に固定す
るだけでよく、位置決めを正確にできる。According to the method of connecting the interconnector to the upper surface of the bypass diode before mounting on the surface electrode by welding in advance, the solar cell and the bypass diode already connected to the interconnector are simply fixed. The positioning is accurate.
【００１３】[0013]
【実施例】本発明の一実施例について、図１及び図２を
参照して説明する。図１（ａ）及び（ｂ）は本実施例に
よる太陽電池セルの製造方法を説明するための太陽電池
セルの断面図、図２は本発明の他の実施例を説明するた
めのバイパスダイオードの断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 (a) and 1 (b) are cross-sectional views of a solar battery cell for explaining a method of manufacturing a solar battery cell according to this embodiment, and FIG. 2 shows a bypass diode for explaining another embodiment of the present invention. FIG.
【００１４】なお、図３及び図４の従来例と同一機能部
分には同一記号を付している。ここでは、主に従来例と
異なる点についてのみ説明する。The same functional parts as those of the conventional example shown in FIGS. 3 and 4 are designated by the same symbols. Here, only the points different from the conventional example will be described.
【００１５】図１（ａ）及び（ｂ）に示す実施例の特徴
は、図３及び図４の従来例のように、太陽電池セル１
０、バイパスダイオード１６、インターコネクタ２１を
同時に加熱して半田付けを行うのではなく、まず太陽電
池セル１０にバイパスダイオード１６を接続しておき、
その後にインターコネクタ２１を接続固定するというよ
うに接続を２段階に分けた点にある。The feature of the embodiment shown in FIGS. 1 (a) and 1 (b) is that the solar cell 1 is different from the conventional example shown in FIGS.
0, the bypass diode 16, and the interconnector 21 are not simultaneously heated and soldered, but the bypass diode 16 is first connected to the solar cell 10,
After that, the connection is divided into two stages such that the interconnector 21 is connected and fixed.
【００１６】具体的には、図１に示すように、まずＰ型
Ｓｉウェハ１１にｎ+層１２を拡散し、裏Ａｇ電極１４
を形成する。次に、表Ａｇ電極１３を形成するためにウ
ェハ表面にＡｇペースト１３’を印刷し、この状態で２
ｍｍ角のペレット状のバイパスダイオード１６を任意の
位置に載置し、このまま表電極の焼成を行う。これによ
り、バイパスダイオード１６が太陽電極セル１０’の表
電極に接続される。Specifically, as shown in FIG. 1, first, an n + layer 12 is diffused in a P-type Si wafer 11 and then a back Ag electrode 14 is formed.
To form. Next, Ag paste 13 ′ is printed on the surface of the wafer to form the front Ag electrode 13, and in this state 2
The mm-square pellet-shaped bypass diode 16 is placed at an arbitrary position, and the front electrode is baked as it is. As a result, the bypass diode 16 is connected to the front electrode of the solar cell 10 '.
【００１７】つまり、この工程においては、表電極の焼
成とバイパスダイオード１６の接続を同時に行ってい
る。この後半田ディップを行い、次いで図１（ｂ）に示
すようにインターコネクタ２１を接続する。That is, in this step, the firing of the front electrode and the connection of the bypass diode 16 are simultaneously performed. After this, solder dipping is performed, and then the interconnector 21 is connected as shown in FIG.
【００１８】上記方法によれば、バイパスダイオード１
６と太陽電極セル１０’とが固定された状態においてイ
ンターコネクタ２１を接続するので、従来のように太陽
電池セル１０’、バイパスダイオード１６、インターコ
ネクタ２１の３者間の位置ずれが生じることはなく、特
性が不安定となる、または信頼性が低下するという問題
は発生しない。According to the above method, the bypass diode 1
Since the interconnector 21 is connected in a state where the solar cell 10 and the solar electrode cell 10 'are fixed to each other, the positional displacement between the solar battery cell 10', the bypass diode 16 and the interconnector 21 does not occur as in the conventional case. There is no problem that the characteristics become unstable or the reliability decreases.
【００１９】さらに、表電極焼成は不可欠な工程である
が、この工程と同時にバイパスダイオード１６を接続固
定するので作業の効率化、コストダウンを図れる。Further, although firing of the front electrode is an indispensable step, since the bypass diode 16 is connected and fixed at the same time as this step, work efficiency and cost reduction can be achieved.
【００２０】また、上記方法は予め太陽電極セル１０’
とバイパスダイオード１６とを接続しておき、その後イ
ンターコネクタ２１を接続するものであるが、予めバイ
パスダイオード１６にインターコネクタ２１を接続して
おいてもよい。即ち、例えば図２に示すように、バイパ
スダイオード１６の表Ａｇ電極１９に対してインターコ
ネクタ２１を予め熔接によって接続しておき、この後に
インターコネクタ接続済みのバイパスダイオード１６を
太陽電池セルに接続するようにしてもよい。ここで、熔
接方法は例えばパラレルギャップ法にて行う。In addition, the above method is performed in advance by using a solar electrode cell 10 '.
And the bypass diode 16 are connected in advance, and then the interconnector 21 is connected. However, the interconnector 21 may be connected to the bypass diode 16 in advance. That is, for example, as shown in FIG. 2, the interconnector 21 is connected in advance to the front Ag electrode 19 of the bypass diode 16 by welding, and then the bypass diode 16 connected to the interconnector is connected to the solar battery cell. You may do it. Here, the welding method is, for example, a parallel gap method.
【００２１】この方法によっても、従来のように太陽電
池セル、バイパスダイオード、インターコネクタの３者
間の位置ずれが生じることはなく、図１（ａ）及び
（ｂ）の実施例と同様、特性の不安定化、信頼性の低下
という問題を解消できる。This method also does not cause the positional displacement among the three members of the solar cell, the bypass diode, and the interconnector as in the conventional case, and has the same characteristics as in the embodiment of FIGS. 1 (a) and 1 (b). It is possible to solve the problems of instability and deterioration of reliability.
【００２２】また、上記両実施例を組み合わせて、予め
インターコネクタを接続した図２に示すバイパスダイオ
ードを、図１のように表電極焼成時に固定するようにし
てもよい。Further, by combining the above embodiments, the bypass diode shown in FIG. 2 to which the interconnector is connected in advance may be fixed during firing of the front electrode as shown in FIG.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
太陽電池セル、バイパスダイオード、インターコネクタ
の３者間の位置ずれを防止でき、特性の安定化、信頼性
の向上を図れる。さらに、工程を簡略化できるので、作
業効率を高め、コストダウンできる。As described above, according to the present invention,
It is possible to prevent positional deviation between the solar battery cell, the bypass diode, and the interconnector, thereby stabilizing the characteristics and improving the reliability. Furthermore, since the process can be simplified, work efficiency can be improved and cost can be reduced.
【図１】（ａ）及び（ｂ）はそれぞれ、本発明の一実施
例によるバイパスダイオード付き太陽電池の製造工程図
である。1A and 1B are respectively manufacturing process diagrams of a solar cell with a bypass diode according to an embodiment of the present invention.
【図２】本発明の他の実施例を示すバイパスダイオード
の断面図である。FIG. 2 is a cross-sectional view of a bypass diode showing another embodiment of the present invention.
【図３】（ａ）及び（ｂ）はそれぞれ、従来例によるバ
イパスダイオード付き太陽電池の製造工程図である。3A and 3B are respectively manufacturing process diagrams of a solar cell with a bypass diode according to a conventional example.
【図４】従来例によるバイパスダイオードの断面図であ
る。FIG. 4 is a cross-sectional view of a bypass diode according to a conventional example.
１０’ 太陽電池セル １３ 表Ａｇ電極 １３’ Ａｇペースト １６ バイパスダイオード ２１ インターコネクタ 10 'solar cell 13 table Ag electrode 13' Ag paste 16 bypass diode 21 interconnector
Claims (2)
オードが搭載され、該バイパスダイオードの上面にイン
ターコネクタが接続されてなるバイパスダイオード付き
太陽電極セルの製造方法において、 前記太陽電池セル上に表面電極材料を設け該表面電極材
料上にバイパスダイオードを載置する工程と、前記表面
電極材料の焼成によって前記バイパスダイオードを固定
する工程と、を含んでなることを特徴とするバイパスダ
イオード付き太陽電極セルの製造方法。1. A method of manufacturing a solar electrode cell with a bypass diode, wherein a bypass diode is mounted on a surface electrode of a solar cell, and an interconnector is connected to an upper surface of the bypass diode, wherein a surface is provided on the solar cell. A solar electrode cell with a bypass diode, comprising: a step of providing an electrode material and mounting a bypass diode on the surface electrode material; and a step of fixing the bypass diode by firing the surface electrode material. Manufacturing method.
イパスダイオードの上面にインターコネクタが接続され
てなるバイパスダイオード付き太陽電極セルの製造方法
において、 前記表面電極への搭載前のバイパスダイオードの上面
に、予め前記インターコネクタを熔接によって接続して
なることを特徴とするバイパスダイオード付き太陽電極
セルの製造方法。2. A method of manufacturing a solar electrode cell with a bypass diode, wherein an interconnector is connected to an upper surface of a bypass diode mounted on a surface electrode of a solar battery cell, wherein the bypass diode before mounting on the surface electrode is provided. A method of manufacturing a solar electrode cell with a bypass diode, characterized in that the interconnector is previously connected to the upper surface by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5161171A JPH07135334A (en) | 1993-06-30 | 1993-06-30 | Fabrication of solar cell with bypass diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5161171A JPH07135334A (en) | 1993-06-30 | 1993-06-30 | Fabrication of solar cell with bypass diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07135334A true JPH07135334A (en) | 1995-05-23 |
Family
ID=15729943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5161171A Pending JPH07135334A (en) | 1993-06-30 | 1993-06-30 | Fabrication of solar cell with bypass diode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07135334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101149463B1 (en) * | 2010-11-23 | 2012-05-24 | 한국에너지기술연구원 | Solar cell module having bypass element |
-
1993
- 1993-06-30 JP JP5161171A patent/JPH07135334A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101149463B1 (en) * | 2010-11-23 | 2012-05-24 | 한국에너지기술연구원 | Solar cell module having bypass element |
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