DE102010036477A1 - Connection box attaching method for solar module, involves positioning and fastening connection box on covering material, and electrically interconnecting electric terminals with connector lug of box by spot welding process - Google Patents
Connection box attaching method for solar module, involves positioning and fastening connection box on covering material, and electrically interconnecting electric terminals with connector lug of box by spot welding process Download PDFInfo
- Publication number
- DE102010036477A1 DE102010036477A1 DE102010036477A DE102010036477A DE102010036477A1 DE 102010036477 A1 DE102010036477 A1 DE 102010036477A1 DE 102010036477 A DE102010036477 A DE 102010036477A DE 102010036477 A DE102010036477 A DE 102010036477A DE 102010036477 A1 DE102010036477 A1 DE 102010036477A1
- Authority
- DE
- Germany
- Prior art keywords
- junction box
- solar module
- electrical connection
- connection box
- welding process
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003466 welding Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 title claims abstract description 12
- 239000003566 sealing material Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 description 7
- 238000005476 soldering Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
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- 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
Abstract
Description
Ein Solarmodul umfasst eine Solarzellenschicht, welche zwischen einem Rückseitenabdeckmaterial und einem Vorderseitenabdeckmaterial eingebettet und durch geeignete Materialien, beispielsweise Verbundfolie, in eine Verbundstruktur gebracht wird. Bei der Solarzellenschicht kann es sich dabei sowohl um einzelne, serienverschaltete Wafer-Solarzellen als auch um ein als Dünnschichten ganzflächig aufgetragenes Schichtsystem umfassend solaraktive Materialien handeln. Die elektrische Energie, welche die Solarzellenschicht produziert, wird über Anschlusskontakte aufgenommen und üblicherweise durch eine im Rückseitenabdeckmaterial vorgesehene Anschlusskontaktöffnung nach außen geführt, wo der Anschlusskontakt mit einer Anschlussdose elektrisch verbunden wird. Die Anschlussdose dient dabei sowohl als Schutzbarriere der Anschlusskontaktöffnung zur Umwelt, um die Solarzellenschicht vor Feuchtigkeitseintritt zu schützen, zum anderen als Anschluss für den Verbraucher. Die elektrische Verbindung zwischen Anschlusskontakt und Anschlussdose wird derzeit üblicherweise als Lötverbindung ausgeführt. Dazu werden das Solarmodul sowie die Anschlussdose in eine Aufnahmevorrichtung eingelegt. Die Anschlussdose weist eine so genannte Anschlussfahne auf. Dabei handelt es sich um die metallenen Kontakte der Anschlussdose, welche in ihrer Ausführungsform den Anschlüssen einer Flachbatterie ähneln. Sie stellen die mechanische Verbindung der elektrischen Kontakte von Solarmodul und Anschlussdose her. Zur Herstellung der elektrischen Verbindung folgt das manuelle Verlöten der Anschlusskontakte und der Anschlussfahne der Anschlussdose. Abschließend wird die Anschlussdose auf die Moduloberfläche aufgesetzt und durch einen Klebstoff fest mit dieser verbunden. Die zuvor hergestellte elektrische Verbindung ist nun nicht mehr zugänglich. Nachteilig an diesem Vorgehen ist, dass eine manuell gesetzte Lötverbindung immer eine gewisse Fehleranfälligkeit aufweist. Kommt es bei fehlerhafter Ausführung des Lötvorgangs nur zu einer unzureichenden Verteilung des Lots um die beiden Kontakte, so kann eine sogenannte kalte Lötstelle entstehen. Diese ist optisch kaum von einer korrekten Lötverbindung zu unterscheiden, was das Auffinden sehr zeitaufwendig macht. Auch kann es vorkommen, dass eine fehlerhafte Lötstelle erst nach einiger Zeit, zum Beispiel durch mechanische Belastung oder thermischen Stress, ihren Kontakt verliert, so dass ein Fehler erst nach der Endkontrolle, möglicherweise erst nach dem Verkauf an den Kunden offensichtlich wird.A solar module comprises a solar cell layer which is embedded between a backsheet material and a front side cover material and brought into a composite structure by suitable materials, for example composite foil. The solar cell layer can be either single, series-connected wafer solar cells or a layer system applied as a thin film over the entire surface comprising solar-active materials. The electrical energy that produces the solar cell layer is absorbed via terminal contacts and usually led to the outside through a provided in the back cover material connection contact opening, where the terminal contact is electrically connected to a junction box. The junction box serves both as a protective barrier of the connection contact opening to the environment to protect the solar cell layer from moisture ingress, on the other hand as a connection for the consumer. The electrical connection between terminal contact and junction box is currently usually performed as a solder joint. For this purpose, the solar module and the junction box are inserted into a receiving device. The junction box has a so-called connection lug. These are the metal contacts of the junction box, which in their embodiment resemble the terminals of a flat battery. They provide the mechanical connection of the electrical contacts of solar module and junction box. To make the electrical connection follows the manual soldering of the connection contacts and the terminal lug of the junction box. Finally, the junction box is placed on the module surface and firmly connected to it by an adhesive. The previously established electrical connection is no longer accessible. A disadvantage of this procedure is that a manually set solder joint always has a certain susceptibility to errors. If, in the case of faulty execution of the soldering operation, there is only insufficient distribution of the solder around the two contacts, a so-called cold soldering point can arise. This is visually difficult to distinguish from a correct solder joint, which makes finding very time consuming. Also, it may happen that a faulty solder joint loses its contact only after some time, for example due to mechanical stress or thermal stress, so that an error only after the final inspection, possibly only after the sale to the customer becomes obvious.
Ein weiterer Nachteil an der manuellen Verlötung ist der hohe Aufwand an Personal und Anlagen. Um die Taktzeiten der restlichen Produktion beizubehalten ist es zumeist nötig, mehrere Lötstationen parallel zu betreiben.Another disadvantage of the manual soldering is the high cost of personnel and equipment. In order to maintain the cycle times of the remaining production, it is usually necessary to operate several soldering stations in parallel.
Ein Verfahren, welches es erlaubt, die Verbindung zwischen Anschlusskontakt und der Anschlussfahne der Anschlussdose auf dem Abdeckmaterial eines Solarmoduls weitgehend zu automatisieren und eine sichere elektrische Verbindung herzustellen ist derzeit für die Solarmodultechnik nicht bekannt.A method which makes it possible to largely automate the connection between the terminal contact and the terminal lug of the junction box on the covering of a solar module and to produce a secure electrical connection is currently not known for the solar module technology.
Erfindungsgemäß ist daher vorgesehen, dass die elektrische Verbindung der Anschlusskontakte mit der Anschlussfahne der Anschlussdose durch ein Punktschweißverfahren hergestellt wird. Ein solches Punktschweißverfahren lässt sich durch geeignete Anlagen automatisieren. Dadurch kann eine hohe Zuverlässigkeit der Lötverbindungen garantiert werden.According to the invention it is therefore provided that the electrical connection of the terminal contacts with the terminal lug of the junction box is made by a spot welding process. Such a spot welding process can be automated by suitable equipment. This guarantees high reliability of the solder joints.
Eine bevorzugte Variante des Verfahrens sieht vor, dass vor der Herstellung der elektrischen Verbindung ein metallischer Dorn unter die Kontaktstelle geführt wird, welcher als Amboss für das Punktschweißverfahren dient. Hierbei kommen dem Dorn im Wesentlichen zwei Funktionen zu. Zum einen dient er als Unterlage und damit dem mechanischen und thermischen Schutz der Solarmoduloberfläche. Im Fall, dass als Punktschweißverfahren das Elektroschweißen gewählt wird, bildet der Dorn eine der beiden Elektroden.A preferred variant of the method provides that prior to the production of the electrical connection, a metallic mandrel is guided under the contact point, which serves as an anvil for the spot welding process. Essentially, the mandrel has two functions. First, it serves as a base and thus the mechanical and thermal protection of the solar module surface. In the case where the electrowelding is selected as the spot welding method, the mandrel forms one of the two electrodes.
Spezielle Varianten des Verfahrens sind dadurch gekennzeichnet, dass die Punktschweißverbindung mit einem der folgenden Verfahren hergestellt wird:
- – Ultraschallschweißen
- – Elektroschweißen
- - ultrasonic welding
- - Electric welding
Eine besonders bevorzugte Variante des Verfahrens sieht vor, dass die Anschlussdose nach dem Herstellen der elektrischen Verbindung mit einem Dichtungsmaterial verfüllt wird. Hierdurch wird ein nachträgliches Beschädigen der Lötverbindung durch mechanisches Einwirken, besonders aber das Eindringen von Feuchtigkeit verhindert. Als Verfüllungsmaterialien kommen beispielsweise Silikon oder Bauschaum in Betracht.A particularly preferred variant of the method provides that the junction box is filled after the establishment of the electrical connection with a sealing material. As a result, a subsequent damage to the solder joint by mechanical action, but especially the penetration of moisture is prevented. Suitable filling materials are, for example, silicone or construction foam.
Eine weitere besonders bevorzugte Variante des Verfahrens sieht vor, dass die Anschlussdose nach dem Herstellen der elektrischen Verbindung mittels eines an der Anschlussdose angebrachten Deckels oder mittels eines separat aufgesetzten Deckels verschlossen wird. Auch hier dient der Deckel dem mechanischen Schutz der Verbindung sowie dem Schutz vor dem Eindringen von Feuchtigkeit und damit einhergehender Korrosion.A further particularly preferred variant of the method provides that the connection box is sealed after the establishment of the electrical connection by means of a cover attached to the junction box or by means of a separately attached lid. Again, the lid serves the mechanical protection of the compound and the protection against the ingress of moisture and concomitant corrosion.
Figurenbeschreibung:Brief Description:
Es zeigt
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Abdeckmaterial des SolarmodulsCovering material of the solar module
- 22
- elektrischer Anschlusskontakt des Solarmodulselectrical connection contact of the solar module
- 33
- Anschlussfahne der AnschlussdoseConnection lug of the junction box
- 44
- Anschlussdosejunction box
- 55
- Werkzeug zum SchweißenTool for welding
- 66
- Dornmandrel
- 77
- Deckel der AnschlussdoseCover of the junction box
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010036477.0A DE102010036477B4 (en) | 2010-07-19 | 2010-07-19 | Method for contacting the electrical junction box of a solar module by means of spot welding connection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010036477.0A DE102010036477B4 (en) | 2010-07-19 | 2010-07-19 | Method for contacting the electrical junction box of a solar module by means of spot welding connection |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102010036477A1 true DE102010036477A1 (en) | 2012-01-19 |
DE102010036477B4 DE102010036477B4 (en) | 2016-06-30 |
Family
ID=45403028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102010036477.0A Expired - Fee Related DE102010036477B4 (en) | 2010-07-19 | 2010-07-19 | Method for contacting the electrical junction box of a solar module by means of spot welding connection |
Country Status (1)
Country | Link |
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DE (1) | DE102010036477B4 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10154234A1 (en) * | 2001-11-07 | 2003-05-22 | Kostal Leopold Gmbh & Co Kg | Arrangement consisting of a panel-like module and a connection unit, connection unit for such an arrangement, method for creating such an arrangement and device for producing such an arrangement |
DE102004010658A1 (en) * | 2003-06-27 | 2005-01-20 | Mitsubishi Denki K.K. | junction box |
DE102008022297A1 (en) * | 2008-03-13 | 2009-09-24 | Fpe Fischer Gmbh | Connection box for solar modules and method for mounting them on the modules |
-
2010
- 2010-07-19 DE DE102010036477.0A patent/DE102010036477B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10154234A1 (en) * | 2001-11-07 | 2003-05-22 | Kostal Leopold Gmbh & Co Kg | Arrangement consisting of a panel-like module and a connection unit, connection unit for such an arrangement, method for creating such an arrangement and device for producing such an arrangement |
DE102004010658A1 (en) * | 2003-06-27 | 2005-01-20 | Mitsubishi Denki K.K. | junction box |
DE102008022297A1 (en) * | 2008-03-13 | 2009-09-24 | Fpe Fischer Gmbh | Connection box for solar modules and method for mounting them on the modules |
Non-Patent Citations (1)
Title |
---|
KAUFMANN, S.; SUTER, P.; JOHO, F.: Cost Reduction In The Assembly of Thin Film Modules By New Back End Processes. In: 24th European Photovoltaic Solar Energy Conference, Hamburg, September 2009, S. 3352-3355. - ISSN / ISBN 3-936338-25-6 * |
Also Published As
Publication number | Publication date |
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DE102010036477B4 (en) | 2016-06-30 |
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Legal Events
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R016 | Response to examination communication | ||
R081 | Change of applicant/patentee |
Owner name: APOLLO PRECISION BEIJING LIMITED, CN Free format text: FORMER OWNER: SOLIBRO GMBH, 06766 THALHEIM, DE Effective date: 20140521 Owner name: APOLLO PRECISION BEIJING LIMITED, CN Free format text: FORMER OWNER: Q-CELLS SE, 06766 WOLFEN, DE Effective date: 20111028 Owner name: BEIJING APOLLO DING RONG SOLAR TECHNOLOGY CO. , CN Free format text: FORMER OWNER: Q-CELLS SE, 06766 WOLFEN, DE Effective date: 20111028 Owner name: BEIJING APOLLO DING RONG SOLAR TECHNOLOGY CO. , CN Free format text: FORMER OWNER: SOLIBRO GMBH, 06766 THALHEIM, DE Effective date: 20140521 Owner name: HANERGY HOLDING GROUP LTD., CN Free format text: FORMER OWNER: SOLIBRO GMBH, 06766 THALHEIM, DE Effective date: 20140521 Owner name: HANERGY HOLDING GROUP LTD., CN Free format text: FORMER OWNER: Q-CELLS SE, 06766 WOLFEN, DE Effective date: 20111028 |
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Owner name: APOLLO PRECISION BEIJING LIMITED, CN Free format text: FORMER OWNER: HANERGY HOLDING GROUP LTD., BEIJING, CN Owner name: BEIJING APOLLO DING RONG SOLAR TECHNOLOGY CO. , CN Free format text: FORMER OWNER: HANERGY HOLDING GROUP LTD., BEIJING, CN |
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Owner name: BEIJING APOLLO DING RONG SOLAR TECHNOLOGY CO. , CN Free format text: FORMER OWNER: APOLLO PRECISION BEIJING LIMITED, BEIJING, CN |
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