WO2012143005A2 - Junction box for solar modules - Google Patents

Junction box for solar modules Download PDF

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Publication number
WO2012143005A2
WO2012143005A2 PCT/DE2012/100108 DE2012100108W WO2012143005A2 WO 2012143005 A2 WO2012143005 A2 WO 2012143005A2 DE 2012100108 W DE2012100108 W DE 2012100108W WO 2012143005 A2 WO2012143005 A2 WO 2012143005A2
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WO
WIPO (PCT)
Prior art keywords
housing
air
junction box
heat exchanger
box according
Prior art date
Application number
PCT/DE2012/100108
Other languages
German (de)
French (fr)
Other versions
WO2012143005A4 (en
WO2012143005A3 (en
Inventor
Thomas Hoffmeister
Roland Pfeffer
Original Assignee
Fpe Fischer Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fpe Fischer Gmbh filed Critical Fpe Fischer Gmbh
Priority to EP12721738.8A priority Critical patent/EP2700104A2/en
Publication of WO2012143005A2 publication Critical patent/WO2012143005A2/en
Publication of WO2012143005A3 publication Critical patent/WO2012143005A3/en
Publication of WO2012143005A4 publication Critical patent/WO2012143005A4/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/20—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer
    • B60T7/203—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer with automatic brake release or reduction in case of reverse travel, e.g. by means of mechanisms mounted on the draw bar
    • B60T7/206—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer with automatic brake release or reduction in case of reverse travel, e.g. by means of mechanisms mounted on the draw bar by means of mechanisms mounted on trailer drum brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
    • F16D65/561—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake
    • F16D65/562—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake arranged between service brake actuator and braking member, and subjected to service brake force
    • 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
    • H02S40/345—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes with cooling means associated with the electrical connection means, e.g. cooling means associated with or applied to the junction box
    • 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

Definitions

  • the invention relates to a junction box for solar modules, which are constructed using inexpensive protection diodes, such as. axial diodes can be constructed with plastic housing, electronic boards and / or other electronic components, and with the same time a good cooling of these components is achieved.
  • inexpensive protection diodes such as.
  • axial diodes can be constructed with plastic housing, electronic boards and / or other electronic components, and with the same time a good cooling of these components is achieved.
  • junction boxes for solar modules are already known from the prior art, with which a good cooling of the electronic components used in the junction boxes (protection diodes) is achieved.
  • junction box for solar modules is shown, in which the electronic components are pressed by pressure elements against the housing or in recesses which correspond to the geometry of the components.
  • electrical insulation is located between the housing and the components an electrical insulation, which preferably consists of thermally conductive silicone rubber.
  • connection box which has a housing which consists of a base body and a housing cover applied thereto. On at least one side wall of the base body at least one receiving chamber is arranged, which protrudes distally from the side wall. In the at least one receiving chamber is at least one sheathed with an insulating electrical component (protective diode), which rests firmly against the inner sides of the receiving chamber and the housing cover.
  • the D are eckel consists of extruded aluminum, has cooling fins and is above the contour of the body over.
  • junction boxes excellent cooling of the protective diodes (or electronic components) is achieved, but they require a relatively high material and manufacturing costs.
  • a major reason for this is that in order to achieve a thermal coupling to the housing of the junction box, only diodes or components can be used, whose housings are made of metal or have a provided for cooling area of metal. In particular, no cost, axial diodes can be used with plastic housing.
  • CN 200910305097 A describes a magnesium-aluminum alloy junction box for a photovoltaic module having a main body inside which a plurality of diodes and terminals are located, and an upper lid.
  • a metal housing is exposed such that an air passage circulating the main body is formed between the metal housing and the main body of the terminal box. It is envisaged that there is an air hole in the metal housing and that the main body of the junction box is provided with a plurality of air outlet holes.
  • the invention has for its object to find a junction box for solar modules, which can be constructed using cost-effective protection diodes, electronic boards and / or other electronic components, and with a nearly equally good cooling of the components is achieved, as in junction boxes, at where the components are thermally coupled to the housing.
  • the starting point is a junction box for solar modules with a metal housing, usually made of aluminum or an aluminum-magnesium alloy, in which there are protective diodes, electronic boards and / or other electronic components which are arranged in the housing so that they account for a large proportion of give off heat generated by them to the air inside the junction box.
  • the electronic components should not have direct thermal contact with the housing.
  • at least a portion of the housing is formed as an air-to-air heat exchanger which allows heat transfer from the air in the housing to the air surrounding the junction box. Due to the at least one heat exchanger, heat generated during operation in the junction box, effectively transported to the outside and discharged to the ambient air.
  • inexpensive protective diodes such as axial diodes with plastic housing, electronic boards or other electronic components without metal surfaces for thermal connection, can be used without having to dispense with a good cooling of these components.
  • the at least one formed in the metal housing air-air heat exchanger is realized by means by which both the inwardly and outwardly facing surface of the housing, in comparison to a corresponding housing with planar shaped housing sides, is increased.
  • cooling fins are formed on the inside and the outside of the housing.
  • other open metal structures for example lamellae, open-pore metal foam which increase the surface area are also conceivable.
  • the number of cooling fins per housing surface and / or the size of the cooling fins of the housing interior facing part differs from the number / size of the outward pointing part. Since the temperature difference between air and cooling fins inside the housing is greater than on the outside, usually the internal cooling fins are made smaller and / or less dense than the outside.
  • the heat transfer eg by using the free thermal convection
  • the inside of the housing and / or outwardly facing part of the at least one air-to-air heat exchanger may be formed so that the number of cooling fins per housing surface and / or the size the cooling fins shows a graduated course.
  • a Ternninalblock of an electrically insulating material, usually plastic is provided which is provided with receptacles for the components.
  • the terminal block is covered by the metal housing.
  • the terminal block is either provided with a cap made of plastic or it is a sufficient distance between the terminal block and metal housing complied with (insulation by means of air layer).
  • Fig. 1 an opened junction box for solar modules
  • Fig. 2 a junction box with a closed lid.
  • the junction box for solar modules consists essentially of the aluminum housing 1, on the two side parts outside 2.1 and 2.2 internal cooling fins are formed, and the terminal block 3 with recordings 4, by means of which the three axial protection diodes 5 on the terminal block 3 are fixed and electrically integrated into the photovoltaic system.
  • the cooling fins 2.1, 2.2 each cover more than 50% of the area of the two side parts.
  • an air-to-air heat exchanger is formed in each case by the outer 2.1 and inner 2.2 cooling fins thermally connected via the housing wall 6.
  • the housing cover 7 is closed (FIG. 2).
  • the axial protection diodes 5 give the heat generated by them to the air inside the junction box, the internal cooling fins 2.2 absorb the heat from the air, the heat is transported through the housing wall 6 to the outer cooling fins 2.1, which in turn the heat to the ambient air.

Abstract

The invention relates to a junction box for solar modules, which can be assembled using inexpensive protective diodes, such as axial diodes having a plastic housing, electronic circuit boards and/or other electronic components, and by means of which at the same time good cooling of said electronic components can be achieved. The junction box comprises a metal housing (1), in which protective diodes (5), electronic circuit boards and/or other electronic components are located and are arranged such that they emit a large proportion of the heat they generate during operation into the air in the interior of the junction box. At least one region of the housing is formed as an air-to-air heat exchanger, by virtue of the fact that said region is provided, for example, with internal cooling ribs (2.2) and external cooling ribs (2.1). Said heat exchanger allows a heat transmission from the air in the housing to the air surrounding the junction box.

Description

Anschlussdose für Solarmodule  Junction box for solar modules
Die Erfindung betrifft eine Anschlussdose für Solarmodule, die unter Verwendung von kostengünstigen Schutzdioden, wie z.B. axiale Dioden mit Kunststoffgehäuse, Elektronikplatinen und/oder sonstigen elektronischen Bauteilen aufgebaut werden kann, und mit der gleichzeitig eine gute Kühlung dieser Bauteile erreicht wird. The invention relates to a junction box for solar modules, which are constructed using inexpensive protection diodes, such as. axial diodes can be constructed with plastic housing, electronic boards and / or other electronic components, and with the same time a good cooling of these components is achieved.
Aus dem Stand der Technik sind bereits Anschlussdosen für Solarmodule bekannt, mit denen eine gute Kühlung der in den Anschlussdosen eingesetzten elektronischen Bauteile (Schutzdioden) erreicht wird. Junction boxes for solar modules are already known from the prior art, with which a good cooling of the electronic components used in the junction boxes (protection diodes) is achieved.
So wird in DE 10 2006 027 104 B3 eine Verbindungsbox (Anschlussdose) für Solarmodule gezeigt, in der die elektronischen Bauteile durch Druckelemente gegen das Gehäuse oder in Aussparungen, die der Geometrie der Bauteile entsprechen, gepresst sind. Zur elektrischen Isolation befindet sich zwischen dem Gehäuse und den Bauteilen eine elektrische Isolation, die vorzugsweise aus thermisch leitendem Silicongummi besteht. Thus, in DE 10 2006 027 104 B3, a junction box (junction box) for solar modules is shown, in which the electronic components are pressed by pressure elements against the housing or in recesses which correspond to the geometry of the components. For electrical insulation is located between the housing and the components an electrical insulation, which preferably consists of thermally conductive silicone rubber.
In DE 10 2008 022 298 B3 ist eine Verbindungsbox offenbart, die ein Gehäuse aufweist, das aus einem Grundkörper und einem auf diesem aufgebrachten Gehäusedeckel besteht. An zumindest einer Seitenwand des Grundkörpers ist zumindest eine Aufnahmekammer angeordnet, die distal aus der Seitenwand auskragt. In der zumindest einen Aufnahmekammer befindet sich zumindest ein mit einer Isolierhülle ummanteltes elektrisches Bauteil (Schutzdiode), das an den Innenseiten der Aufnahmekammer sowie am Gehäusedeckel fest anliegt. Der D sind eckel besteht aus extrudiertem Aluminium, weist Kühlrippen auf und steht über der Kontur des Grundkörpers über. DE 10 2008 022 298 B3 discloses a connection box which has a housing which consists of a base body and a housing cover applied thereto. On at least one side wall of the base body at least one receiving chamber is arranged, which protrudes distally from the side wall. In the at least one receiving chamber is at least one sheathed with an insulating electrical component (protective diode), which rests firmly against the inner sides of the receiving chamber and the housing cover. The D are eckel consists of extruded aluminum, has cooling fins and is above the contour of the body over.
Mit den beiden Anschlussdosen wird zwar eine hervorragende Kühlung der Schutzdioden (bzw. der elektronischen Bauteile) erreicht, sie bedingen jedoch einen relativ hohen Material- und Fertigungsaufwand. Ein wesentlicher Grund dafür ist, dass, um eine thermische Kopplung an das Gehäuse der Anschlussdose zu erreichen, ausschließlich Dioden bzw. Bauteile eingesetzt werden können, deren Gehäuse aus Metall bestehen oder die einen zur Kühlung vorgesehenen Bereich aus Metall aufweisen. Insbesondere können keine kostengünstigen, axialen Dioden mit Kunststoffgehäuse verwendet werden. Although the two junction boxes excellent cooling of the protective diodes (or electronic components) is achieved, but they require a relatively high material and manufacturing costs. A major reason for this is that in order to achieve a thermal coupling to the housing of the junction box, only diodes or components can be used, whose housings are made of metal or have a provided for cooling area of metal. In particular, no cost, axial diodes can be used with plastic housing.
Schließlich wird in CN 200910305097 A ein Anschlusskasten aus einer Magnesium- Aluminium-Legierung für ein Photovoltaik-Modul mit einem Hauptkörper, in dessen Inneren sich mehrere Dioden sowie Anschlusseinrichtungen befinden, und einem Oberdeckel beschrieben. Auf dem Hauptkörper des Anschlusskastens ist ein Metallgehäuse derart ausgesetzt, dass ein den Hauptkörper umlaufender Luftkanal zwischen dem Metallgehäuse und dem Hauptkörper des Anschlusskastens gebildet ist. Es ist vorgesehen, dass sich im Metallgehäuse ein Luftloch befindet und dass der Hauptkörper des Anschlusskastens mit mehreren Luftaustrittslöchern versehen ist. Finally, CN 200910305097 A describes a magnesium-aluminum alloy junction box for a photovoltaic module having a main body inside which a plurality of diodes and terminals are located, and an upper lid. On the main body of the terminal box, a metal housing is exposed such that an air passage circulating the main body is formed between the metal housing and the main body of the terminal box. It is envisaged that there is an air hole in the metal housing and that the main body of the junction box is provided with a plurality of air outlet holes.
Die sehr gute Kühlung der ersten beiden Lösungen wird mit diesem Anschlusskasten bei Weitem nicht erreicht. The very good cooling of the first two solutions is far from being achieved with this junction box.
Der Erfindung liegt die Aufgabe zugrunde, eine Anschlussdose für Solarmodule zu finden, die unter Verwendung von kostengünstigen Schutzdioden, Elektronikplatinen und/oder sonstigen elektronischen Bauteilen aufgebaut werden kann, und mit der eine nahezu gleich gute Kühlung der Bauteile erreicht wird, wie in Anschlussdosen, bei denen die Bauteile thermisch an das Gehäuse gekoppelt sind. The invention has for its object to find a junction box for solar modules, which can be constructed using cost-effective protection diodes, electronic boards and / or other electronic components, and with a nearly equally good cooling of the components is achieved, as in junction boxes, at where the components are thermally coupled to the housing.
Die Aufgabe der Erfindung wird durch die Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Ausführungen der Erfindung ergeben sich aus den Ansprüchen 2 bis 9. The object of the invention is solved by the features of claim 1. Further advantageous embodiments of the invention will become apparent from the claims 2 to 9.
Ausgegangen wird von einer Anschlussdose für Solarmodule mit einem Metallgehäuse, üblicherweise aus Aluminium oder aus einer Aluminium-Magnesium-Legierung, in dem sich Schutzdioden, Elektronikplatinen und/oder sonstige elektronische Bauteile befinden, die so im Gehäuse angeordnet sind, dass sie einen großen Anteil der von ihnen im Betrieb erzeugten Wärme an die Luft im Inneren der Verbindungsdose abgeben. Insbesondere sollen die elektronischen Bauteile keinen direkten thermischen Kontakt zum Gehäuse haben. Nach Maßgabe der Erfindung ist mindestens ein Bereich des Gehäuses als Luft-Luft- Wärmetauscher, der einen Wärmeübertrag von der Luft im Gehäuse auf die die Verbindungsbox umgebende Luft ermöglicht, ausgeformt. Durch den mindestens einen Wärmetauscher wird Wärme, die während des Betriebs in der Anschlussdose entsteht, effektiv nach außen transportiert und an die Umgebungsluft abgegeben. Infolgedessen können kostengünstige Schutzdioden, wie z.B. axiale Dioden mit Kunststoffgehäuse, Elektronikplatinen oder sonstige elektronische Bauteile ohne Metallflächen zur thermischen Anbindung, eingesetzt werden, ohne dass auf eine gute Kühlung dieser Komponenten verzichtet werden muss. The starting point is a junction box for solar modules with a metal housing, usually made of aluminum or an aluminum-magnesium alloy, in which there are protective diodes, electronic boards and / or other electronic components which are arranged in the housing so that they account for a large proportion of give off heat generated by them to the air inside the junction box. In particular, the electronic components should not have direct thermal contact with the housing. In accordance with the invention, at least a portion of the housing is formed as an air-to-air heat exchanger which allows heat transfer from the air in the housing to the air surrounding the junction box. Due to the at least one heat exchanger, heat generated during operation in the junction box, effectively transported to the outside and discharged to the ambient air. As a result, inexpensive protective diodes, such as axial diodes with plastic housing, electronic boards or other electronic components without metal surfaces for thermal connection, can be used without having to dispense with a good cooling of these components.
Der mindestens eine im Metallgehäuse ausgeformte Luft-Luft-Wärmetauscher ist durch Mittel realisiert, durch die sowohl die nach innen als auch die nach außen weisende Oberfläche des Gehäuses, im Vergleich zu einem entsprechenden Gehäuse mit planar ausgeformten Gehäuseseiten, vergrößert wird. Bevorzugt sind auf der Innen- und der Außenseite des Gehäuses Kühlrippen ausgeformt. Denkbar sind jedoch auch andere offene Metallstrukturen (z.B. Lamellen, offenporiger Metallschaum), die eine Vergrößerung der Oberfläche bewirken. The at least one formed in the metal housing air-air heat exchanger is realized by means by which both the inwardly and outwardly facing surface of the housing, in comparison to a corresponding housing with planar shaped housing sides, is increased. Preferably, cooling fins are formed on the inside and the outside of the housing. However, other open metal structures (for example lamellae, open-pore metal foam) which increase the surface area are also conceivable.
Um einen optimalen Wärmeübertrag von innen nach außen zu erzielen, unterscheidet sich die die Anzahl der Kühlrippen pro Gehäusefläche und/oder die Größe der Kühlrippen des ins Gehäuseinnere weisenden Teils (des mindestens einen Luft-Luft- Wärmetauschers) von der Anzahl/Größe des nach außen weisenden Teils. Da die Tem- peraturdifferenz zwischen Luft und Kühlrippen im Innern des Gehäuses größer ist als auf der Außenseite, werden üblicherweise die innen liegenden Kühlrippen kleiner ausgeführt und/oder weniger dicht angeordnet als die außen liegenden. In order to achieve optimum heat transfer from the inside to the outside, the number of cooling fins per housing surface and / or the size of the cooling fins of the housing interior facing part (the at least one air-to-air heat exchanger) differs from the number / size of the outward pointing part. Since the temperature difference between air and cooling fins inside the housing is greater than on the outside, usually the internal cooling fins are made smaller and / or less dense than the outside.
Zur weiteren Verbesserung des Wärmeübertrags (z.B. durch Nutzung der freien thermischen Konvektion) kann der ins Gehäuseinnere und/oder der nach außen weisenden Teil des mindestens einen Luft-Luft-Wärmetauschers so ausgeformt sein, dass die Anzahl der Kühlrippen pro Gehäusefläche und/oder die Größe der Kühlrippen einen graduierten Verlauf zeigt. Für den Anschluss der Schutzdioden, Elektronikplatinen und/oder sonstigen elektronische Bauteile ist ein Ternninalblock aus einem elektrisch isolierenden Material, üblicherweise Kunststoff, vorgesehen, der mit Aufnahmen für die Bauteile versehen ist. Bei montierter Verbindungsdose wird der Terminalblock vom Metallgehäuse überdeckt. Zur elektrischen Isolation des Terminalblocks vom Metallgehäuse wird der Terminalblock entweder mit einer Kappe aus Kunststoff versehen oder es wird ein ausreichender Abstand zwischen den Terminalblock und Metallgehäuse eingehalten (Isolation mittels Luftschicht). To further improve the heat transfer (eg by using the free thermal convection) of the inside of the housing and / or outwardly facing part of the at least one air-to-air heat exchanger may be formed so that the number of cooling fins per housing surface and / or the size the cooling fins shows a graduated course. For the connection of the protective diodes, electronic boards and / or other electronic components, a Ternninalblock of an electrically insulating material, usually plastic, is provided which is provided with receptacles for the components. When the junction box is mounted, the terminal block is covered by the metal housing. For electrical insulation of the terminal block from the metal housing, the terminal block is either provided with a cap made of plastic or it is a sufficient distance between the terminal block and metal housing complied with (insulation by means of air layer).
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert; hierzu zeigen: The invention will be explained in more detail with reference to an embodiment; show:
Fig. 1 : eine geöffnete Anschlussdose für Solarmodule; Fig. 1: an opened junction box for solar modules;
Fig. 2: eine Anschlussdose mit geschlossenem Deckel. Fig. 2: a junction box with a closed lid.
Wie aus Fig. 1 ersichtlich, besteht die Anschlussdose für Solarmodule im Wesentlichen aus dem Aluminiumgehäuse 1 , an dessen beiden Seitenteilen außen- 2.1 und innenliegende 2.2 Kühlrippen ausgeformt sind, und dem Terminalblock 3 mit Aufnahmen 4, mittels derer die drei axialen Schutzdioden 5 am Terminalblock 3 befestigt und elektrisch in die Fotovoltaikanlage eingebunden werden. Die Kühlrippen 2.1 , 2.2 überdecken jeweils mehr als 50 % der Fläche der beiden Seitenteile. As can be seen from Fig. 1, the junction box for solar modules consists essentially of the aluminum housing 1, on the two side parts outside 2.1 and 2.2 internal cooling fins are formed, and the terminal block 3 with recordings 4, by means of which the three axial protection diodes 5 on the terminal block 3 are fixed and electrically integrated into the photovoltaic system. The cooling fins 2.1, 2.2 each cover more than 50% of the area of the two side parts.
In den Bereichen der Seitenteile, in denen die Kühlrippen 2.1 , 2.2 ausgeformt sind, wird durch die über die Gehäusewand 6 thermisch verbundenen außen- 2.1 und innenliegenden 2.2 Kühlrippen jeweils ein Luft-Luft-Wärmetauscher gebildet. In the areas of the side parts in which the cooling fins 2.1, 2.2 are formed, an air-to-air heat exchanger is formed in each case by the outer 2.1 and inner 2.2 cooling fins thermally connected via the housing wall 6.
Beim Betrieb der Fotovoltaikanlage ist der Gehäusedeckel 7 geschlossen (Fig. 2). Die axialen Schutzdioden 5 geben die von ihnen erzeugte Wärme an die Luft im Innern der Anschlussdose ab, die innenliegenden Kühlrippen 2.2 nehmen die Wärme aus der Luft auf, die Wärme wird durch die Gehäusewand 6 zu den außen liegenden Kühlrippen 2.1 transportiert, die ihrerseits die Wärme an die Umgebungsluft abgeben. Liste der verwendeten Bezugszeichen During operation of the photovoltaic system, the housing cover 7 is closed (FIG. 2). The axial protection diodes 5 give the heat generated by them to the air inside the junction box, the internal cooling fins 2.2 absorb the heat from the air, the heat is transported through the housing wall 6 to the outer cooling fins 2.1, which in turn the heat to the ambient air. List of reference numbers used
1 Aluminiumgehäuse 1 aluminum housing
2.1 außenliegende Kühlrippe 2.1 external cooling rib
2.2 Innenliegende Kühlrippe2.2 Internal cooling rib
3 Terminalblock 3 terminal block
4 Aufnahme  4 recording
5 Schutzdiode  5 protection diode
6 Gehäusewand  6 housing wall
7 Gehäusedeckel  7 housing cover

Claims

Patentansprüche claims
1 . Anschlussdose für Solarmodule mit einem Metallgehäuse (1 ), in dem sich 1 . Junction box for solar modules with a metal housing (1) in which
Schutzdioden (5), Elektronikplatinen und/oder sonstige elektronische Bauteile befinden, die derart angeordnet sind, dass sie einen großen Anteil der von ihnen im Betrieb erzeugten Wärme an die Luft im Inneren der Verbindungsdose abgeben, dadurch gekennzeichnet, dass mindestens ein Bereich des Gehäuses als Luft-Luft-Wärmetauscher, der einen Wärmeübertrag von der Luft im Gehäuse auf die die Verbindungsbox umgebende Luft ermöglicht, ausgeformt ist.  Protective diodes (5), electronic boards and / or other electronic components which are arranged such that they deliver a large proportion of the heat generated in operation to the air inside the junction box, characterized in that at least a portion of the housing as Air-to-air heat exchanger, which allows a heat transfer from the air in the housing to the air surrounding the junction box is formed.
2. Anschlussdose nach Anspruch 1 , dadurch gekennzeichnet, dass der mindestens eine im Metallgehäuse (1 ) ausgeformte Luft-Luft-Wärmetauscher durch Mittel realisiert ist, durch die sowohl die nach innen als auch die nach außen weisende Oberfläche des Gehäuses (1 ) gegenüber einem Gehäuse mit planaren Gehäuseseiten vergrößert wird. 2. Junction box according to claim 1, characterized in that the at least one in the metal housing (1) formed air-air heat exchanger is realized by means by which both the inwardly and outwardly facing surface of the housing (1) against a Housing with planar sides of the housing is enlarged.
3. Anschlussdose nach Anspruch 2, dadurch gekennzeichnet, dass der mindestens eine Luft-Luft. -Wärmetauscher durch Kühlrippen (2.1 , 2.2), die auf der Innen- und der Außenseite des Gehäuses (1 ) angeordnet sind, realisiert ist. 3. Junction box according to claim 2, characterized in that the at least one air-air. Heat exchanger by cooling fins (2.1, 2.2), which are arranged on the inside and the outside of the housing (1) is realized.
4. Anschlussdose nach Anspruch 3, dadurch gekennzeichnet, dass sich die Anzahl der Kühlrippen (2.1 , 2.2) pro Gehäusefläche und die Größe der Kühlrippen (2.1 , 2.2) des ins Gehäuseinnere weisenden Teils des mindestens einen Luft- Luftwärmetauschers vom nach außen weisenden Teil unterscheidet, wobei die jeweilige Anzahl und Größe der Kühlrippen (2.1 , 2.2 so gewählt ist, dass ein optimaler Wärmeübertrag von innen nach außen erreicht wird. 4. Junction box according to claim 3, characterized in that the number of cooling fins (2.1, 2.2) per housing surface and the size of the cooling fins (2.1, 2.2) of the housing interior facing part of the at least one air-air heat exchanger differs from the outwardly facing part , Wherein the respective number and size of the cooling fins (2.1, 2.2 is selected so that an optimal heat transfer is achieved from the inside out.
5. Anschlussdose nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Anzahl der Kühlrippen (2.1 , 2.2) pro Gehäusefläche und die Größe der Kühlrippen (2.1 ,2.2) des ins Gehäuseinnere und/oder des nach außen weisenden Teils des mindestens einen Luft-Luft-Wärmetauschers einen graduierten Verlauf aufweisen. 5. Junction box according to one of claims 1 to 4, characterized in that the number of cooling fins (2.1, 2.2) per housing surface and the size of the cooling fins (2.1, 2.2) of the housing interior and / or the outwardly facing part of the at least one Air-to-air heat exchanger have a graduated course.
6. Anschlussdose nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass an zwei gegenüberliegenden Seiten des Gehäuses (1 ) jeweils ein Luft-Luft- Wärmetauscher, der sich über mindestens 50 % der Fläche der Seite erstreckt, ausgeformt ist. 6. Junction box according to one of claims 1 to 5, characterized in that on two opposite sides of the housing (1) in each case an air-air heat exchanger which extends over at least 50% of the surface of the side is formed.
7. Anschlussdose nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Gehäuse aus Aluminium oder aus einer Aluminium-Magnesium- Legierung besteht. 7. Junction box according to one of claims 1 to 6, characterized in that the housing consists of aluminum or of an aluminum-magnesium alloy.
8. Anschlussdose nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie einen vom Metallgehäuse (1 ) überdeckten Terminalblock (3) aus einem elektrisch isolierendem Material aufweist, der mit Aufnahmen (4) für Schutzdioden (5), Elektronikplatinen und/oder sonstige elektronische Bauteile versehen ist. 8. Junction box according to one of claims 1 to 7, characterized in that it comprises a metal housing (1) covered terminal block (3) made of an electrically insulating material with receptacles (4) for protection diodes (5), electronic boards and / or other electronic components is provided.
9. Anschlussdose nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass axiale Schutzdioden (5) mit Kunststoffgehäusen eingesetzt sind. 9. Junction box according to one of claims 1 to 8, characterized in that axial protective diodes (5) are used with plastic housings.
PCT/DE2012/100108 2011-04-21 2012-04-18 Junction box for solar modules WO2012143005A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12721738.8A EP2700104A2 (en) 2011-04-21 2012-04-18 Junction box for solar modules

Applications Claiming Priority (2)

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DE102011002215.5 2011-04-21
DE102011002215A DE102011002215A1 (en) 2011-04-21 2011-04-21 Junction box for solar modules

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WO2012143005A2 true WO2012143005A2 (en) 2012-10-26
WO2012143005A3 WO2012143005A3 (en) 2013-01-24
WO2012143005A4 WO2012143005A4 (en) 2013-03-28

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CN104242815A (en) * 2014-09-29 2014-12-24 谢英健 Photovoltaic solar junction box
CN105790704A (en) * 2016-06-03 2016-07-20 浙江人和光伏科技有限公司 Junction box for solar cell

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DE102008022298B3 (en) 2008-03-13 2009-04-16 Fpe Fischer Gmbh Junction box for solar module of solar plant, has electrical component e.g. bypass diode, and electrical connection, which are arranged in housing, where component firmly lies on interior sides of chamber and at housing cover

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DE102006027104B3 (en) 2006-06-09 2007-08-23 Fpe Fischer Gmbh Solar panel connection box, has electronic components pressed against housing and electrical insulation provided between housing and components, where electrical insulation is made of thermally conductive silicone rubber
DE102008022298B3 (en) 2008-03-13 2009-04-16 Fpe Fischer Gmbh Junction box for solar module of solar plant, has electrical component e.g. bypass diode, and electrical connection, which are arranged in housing, where component firmly lies on interior sides of chamber and at housing cover

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104242815A (en) * 2014-09-29 2014-12-24 谢英健 Photovoltaic solar junction box
CN105790704A (en) * 2016-06-03 2016-07-20 浙江人和光伏科技有限公司 Junction box for solar cell

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EP2700104A2 (en) 2014-02-26
DE102011002215A1 (en) 2012-10-25
WO2012143005A4 (en) 2013-03-28
WO2012143005A3 (en) 2013-01-24

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