EP1836734A1 - Unite de connexion pour modules solaires photovoltaiques - Google Patents

Unite de connexion pour modules solaires photovoltaiques

Info

Publication number
EP1836734A1
EP1836734A1 EP05821943A EP05821943A EP1836734A1 EP 1836734 A1 EP1836734 A1 EP 1836734A1 EP 05821943 A EP05821943 A EP 05821943A EP 05821943 A EP05821943 A EP 05821943A EP 1836734 A1 EP1836734 A1 EP 1836734A1
Authority
EP
European Patent Office
Prior art keywords
connection unit
photovoltaic solar
solar modules
modules according
connection
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.)
Withdrawn
Application number
EP05821943A
Other languages
German (de)
English (en)
Inventor
Markus MÜNCH
Eckehard Hofmüller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solarwatt GmbH
Original Assignee
Solarwatt 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 Solarwatt GmbH filed Critical Solarwatt GmbH
Publication of EP1836734A1 publication Critical patent/EP1836734A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • 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 connection unit for photovoltaic solar modules, in particular for photovoltaic solar modules in plate form with exposed connection portions of the conductor consisting of the base housing part, a further housing part and internal electrical connections, which are connected to an electrical unit and a connection cable.
  • connection unit is arranged, wherein the connection contacts protrude from the conductor track plane of the solar module.
  • connection means are bent out of the plane of the conductor track structure parts of the conductor itself, then to a contacting by means of an additional stamped grid.
  • the lead frame is to allow improved heat dissipation from the interior of the connection unit.
  • Connection unit consists of two parts. On a base unit while a removable cover unit is arranged. Again, there is a partial potting of the interior with a filler and a subsequent replacement of individual specific inner parts, in particular the diodes is not possible. Another disadvantage is that the interconnects must be out as a separate output terminals from the plate-shaped solar module according out and in the basic unit into it, which means an additional manufacturing effort. These two parts are then merged during assembly. The removable cover unit allows for different interconnection of the individual solar modules with each other as needed.
  • connection unit is listed in DE 100 50 614 Cl, where a metallic junction box is claimed.
  • the interconnects are also guided by means of additional connecting lines or connecting wires to the outside and are connected within a junction box with protective diodes.
  • These protective diodes are in turn connected to the metallic outer sheath.
  • cooling fins are arranged on this outer jacket.
  • the problem with this technical solution is the penetration of the entire plate-shaped solar module. In connection with the different extent of the interconnected materials such as glass and metal, an increased effort for tightness of the connection unit is required. An easy change of the protective diodes is also not possible.
  • the object of the invention is to provide a connection unit for photovoltaic solar modules that can be quickly connected to the photovoltaic solar module without problems, yet individual parts can be easily replaced, over the entire life of a permanent and good electrical conductive contact is made possible and that the Ruthseinlieit in different equipment is suitable for different tasks.
  • the object is achieved by the features of the first claim.
  • the photovoltaic solar module 2 is provided with partially exposed connection sections of the two conductor tracks 9. If required, these connection sections can also be easily produced on site in the installation of the plate-shaped solar module.
  • the novel Rheinemheit 1, in particular for photovoltaic solar panels 2 in plate form consists of a base body 3 and at least one other housing part, the insertion housing part 6.
  • connection unit 1 is arranged sealingly directly on the surface of a plate-shaped solar module 2.
  • the base body 3 of the connection unit 1 has at least one recess 4, in which electrical contact elements 5 are formed, arranged and positioned so that they can be contacted with a plug-in housing part 6 and its individual parts and / or the conductors of the connection cable or 11 preferably via connectors are.
  • These contact elements 5 are connected to a switching and control unit 7 within the plug-in housing part 6.
  • the contact 8 of the electrical contact elements 5 is arranged in a surprising novel manner in a plane with the support surface on the conductor 9 of the plate-shaped solar module 2.
  • connection unit 1 This has the advantage that, on the one hand, a very flat and structurally simple construction of the connection unit 1 is possible overall and, on the other hand, an automated production of the connection of the connection unit 1 can be realized.
  • Another advantage is that the material structure around the tracks is not changed. In this case, both the shape and the position of the electrical contact elements 5 correspond to the exposed terminal portions 10 of the tracks 9. With the help of the base body 3 of the terminal unit 1, the contact area of the electrical contact elements 5 and the exposed portions of the tracks 9 reliably against any climatic influences permanently completely isolated over a relatively large area.
  • connection unit 1 is characterized in that it can be easily mounted and the plug-in housing part 6 is easily removable at any time, and can be converted in a simple manner for other connection conditions depending on the intended use of the plate-shaped solar module 2. Additional measures relating to the position and shape of the tracks 9 of the plate-shaped solar module 2 for the purpose of subsequent contacting, in contrast to the prior art are not required.
  • connection unit 1 according to the invention for photovoltaic solar modules one or more connection cables 11 are connected to the electrical contact elements 5 and the switching and control unit 7 within the base housing part 3 such that the base body 3 positions the connection cable or cables 11 by means of special cable accessories. attached and at the same time sufficiently isolated.
  • the main advantage is also seen here in a comparison with the prior art simplified construction.
  • connection unit 1 for photovoltaic solar modules 2 various electrical and / or electronic components and / or power electronic circuit units and / or integrated circuits can be arranged and interconnected in the internal switching and control unit 7 as a function of the specific application.
  • the entire plug-in housing part 6 is formed as a heat sink in order to optimally dissipate the heat produced, for example, in the electronic switching and control unit 7, and to be able to maintain an upper temperature limit within the connection unit 1.
  • connection unit 1 for photovoltaic solar modules 2 it is particularly advantageous to design the plug-in housing part 6 of the connection unit 1 for photovoltaic solar modules 2 as plastic injection-molded parts or cast molded parts with appropriate dimensions. This ensures easy installation and variability of the design depending on the application.
  • connection unit 1 for photovoltaic solar modules can be designed so that a passive and / or active cooling device is arranged on or in the plug-in housing part 6.
  • This cooling device can relate its energy requirement both via a third flange and via the solar module itself.
  • the advantage is in particular that then in the switching and control unit 7 and very temperature-sensitive electronic components can be arranged and interconnected.
  • the arrangement of a heating mechanism is conceivable under special climatic conditions.
  • the insertion housing part 6 consists of a flat-forming electrical connection unit 21 and a cooling body part 22 resting thereon and / or an additional insertion connection part of suitable design.
  • At least one contacting opening 23 for carrying out the contact elements 5 is arranged in the bottom of the insert molding part 20 of the connection unit 1. Furthermore, a loading area 24 is arranged which corresponds to the shape and the dimensions of the flat-type electrical connection unit 21. Immediately above a receiving shaft 25 is provided for a preformed heat sink member 22, wherein the flat electrical connecting unit 21 is connected by means of electrical contact elements 5 with the tracks 9 of the plate-shaped solar module 2 and the connecting cable 11.
  • the insert molding 20 simultaneously contains the connection cable 11 and positions it by means of a cable interconnection and fastening opening 26 and at the same time realizes the strain relief and the securing of the insulation.
  • the flat electrical connecting unit 21 consists of a flat diode.
  • one or more bypass diodes or other types of diodes can be connected to the electrical connection unit 21.
  • connection unit 1 for photovoltaic solar modules 2
  • a battery charging regulator can likewise be integrated in the electrical connection unit 21 at the same time in order to be able to carry out the direct charging in accordance with specially adapted batteries.
  • connection unit 1 where an inverter circuit is integrated in the electrical connection unit 21, is also possible.
  • the internally arranged electrical contact elements 5 of the connection unit 1 for photovoltaic solar modules 2 are advantageously designed as spring contacts with blade connectors and are positioned by a special housing interior training of the body 3 and fixed sufficiently fixed in their position that they are suitable for multiple plug-in operations without contacting problems.
  • one or more seals may additionally be arranged on or around the recess 4 in the region of the support on the plate-shaped solar module 2 or also on the entire outer edge on the support surface of the connection unit 1 in order to improve the sealing of the connection unit 1 with respect to the photovoltaic solar module 2 and to reliably protect the electrical contact elements 5 or the components of the internal switching and control device 7 against disturbing contamination or climatic influences. This is particularly advantageous if the plate-shaped photovoltaic solar module 2 is exposed to climatic and other mechanical stresses.
  • a further improvement of the insulation protection can be achieved if the recess 4 is isolated after contacting with a suitable casting compound.
  • connection unit 1 for photovoltaic solar modules 2 within the switching and control device 7, a self-diagnostic device.
  • a defective solar module immediately recognizable in a malfunction of the operation or a decrease in the power generated z. B. due to aging can be detected or displayed in good time and the defective solar module can then be replaced.
  • the plug-in housing part 6 in such a way and to arrange it in the main body 3 that it can easily be exchanged quickly and exchanged as required, for example during wear or change in use of the photovoltaic solar module, and adapted to the different usage requirements.
  • connection unit 1 for photovoltaic solar modules 2 lies in its simple, structured few embodiments contained component, its direct coupling to the solar module, its particularly flat and fully insulating design and a very good cooling effect. Furthermore, due to the problem-free interchangeability of the inner parts of the connection unit 1, such as in particular the electrical contact elements and the switching and control unit 7 at any time an adaptation to new connection conditions reached.
  • the invention will be explained in more detail below in an exemplary embodiment with reference to the figures 1 to 3.
  • Fig.l shows a terminal unit 1 according to the invention in its arrangement on a photovoltaic solar panel in plate form
  • connection unit 1 shows a sectional view of a connection unit 1 according to the invention
  • Fig. 3 shows a preferred embodiment with their individual parts
  • FIGS. 1 and 2 show a connection unit 1 according to the invention for a photovoltaic plate-shaped solar module 2, where the connection sections 10 of the conductor track 9 are exposed and accessible from the outside, d. H. in the surface of the plate-shaped solar module, a kind of window is arranged in the cover layer.
  • Connection unit 1 consists of a base housing, the base body 3 and at least one further housing part, the insertion housing part 6.
  • the connection unit 1 is arranged sealingly directly on the surface of the plate-shaped solar module 2. A tight fit and a secure seal takes place when the main body 3 is glued completely flat with the surface of the plate-shaped solar module 2.
  • Connecting unit 1 further has at least one recess 4.
  • electrical contact elements 5 are constructed and arranged in the base body 3, which they are connected both within the body 3 and according to the invention are in a plane with the support surface on the conductor 9 and allow a reliable contact 8 of the electrical contact elements 5.
  • the electrical contact elements 5 are fastened as double-angled spring elements.
  • the spring elements with a leg are resilient on the surface of the conductor 9 of the plate-shaped solar mode 2.
  • the legs of the electrical contact elements 5 can also be connected to the conductor tracks in a material-locking manner. The shape and position of the resting legs corresponds to the position, the shape and the dimensions of the tracks 9 in the area of the exposed terminal portions 10.
  • the electrical contact elements 5 end in flat connectors. These are positioned after that Insertion of the switching and control unit 7 inevitably Kontalcttechnik with their terminal lugs takes place.
  • the conductors of one or more connection cables 11 can also be interconnected if required.
  • a connection of the or the connection cable 11 in the region of the recess 4 with the electrical contact elements 5 is generally possible.
  • the switching and control unit 7 is disposed below the plug-in housing part 6 and fixed. For better sealing is here at the front area, which is directed to the terminal lugs, an additional seal (not numbered in the drawing) arranged.
  • the plug-in housing part 6 is executable depending on the application in different heights.
  • the plug-in housing part 6 and the switching and control unit 7 can be designed as a housing part, or both can be glued together.
  • the base body 3 is designed as a protective cover to the insert molding 20, wherein the base body 3 can be pushed or clicked over the insertion molding 20.
  • FIG. 3 shows how the connecting cable 11 is connected to the main body 3, here identical to the insert molded part 26.
  • the connecting cable 11 by a suitable rubber-elastic body which is locked in the Jardinverschluungs- and -befest Trentsöffhung 26 of the insert molding 20 via structural measures, attached and positioned simultaneously. In this way, both a strain relief and a seal is realized at the same time.
  • the cable connecting and fixing opening 26 is closed with a weatherproof molding compound.
  • This flat diode is connected to the heat sink 22 to allow a good heat dissipation.
  • the heat sink 22 is made of an aluminum extruded part.
  • the shape and dimensions of the flat electrical connection unit 22 are precisely matched to the dimensions of the insertion area 24.
  • flat electrical connection unit 21 and heat sink 22 practically the plug-in housing part 6 accordingly, is in the insert molding 20 formed in this area a Aufschahmeschacht 25.
  • Aufhahmeschacht 25 of the insert molding 20 the inserted parts individually or together depending on the execution by means of suitable structural measures for a sufficiently strong but also easily disassembled, locked.
  • connection unit 1 serves to dissipate energy from the photovoltaic solar module in the form of a plate to potential consumers and, in particular, to protect and extend the service life of the electrical connections and / or internal electronic components.

Landscapes

  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne une unité de connexion pour modules solaires photovoltaïques comportant des sections de connexion du tracé conducteur, dégagées. L'invention vise à mettre au point une unité de connexion permettant une connexion rapide sur un module solaire photovoltaïque et un remplacement aisé de pièces constitutives individuelles. Selon l'invention, ledit module solaire (2) est muni de sections de connexion dégagées des tracés conducteurs (9). L'unité de connexion (1) comprend un corps de base (3) et au moins une partie de boîtier de baie (6). Des éléments de contact et des composants électriques se trouvent à l'intérieur. L'unité de connexion (1) est placée de manière étanche directement sur la surface d'un module solaire (2). Le corps de base (3) présente un évidement (4) dans lequel des éléments de contact électriques (5), en position horizontale à l'intérieur, sont conçus, disposés et positionnés de sorte qu'un contact puisse être établi avec une partie du boîtier de baie (6) et ses pièces constitutives et/ou les conducteurs du câble de connexion (11) par l'intermédiaire de fiches de raccordement. Ces éléments de contact (5) sont commutés avec une unité de commutation et de commande (7) à l'intérieur de la partie de boîtier de baie (6). Le système de mise en contact (8) des éléments de contact électriques (5) est disposé dans un plan avec la surface d'appui sur le tracé conducteur (9) du module solaire (2). L'unité de connexion (1) sert à dissiper l'énergie dégagée par le module solaire photovoltaïque (2), en direction de consommateurs, ainsi qu'à protéger les connexions électriques et les composants électroniques situés dedans et à en prolonger la durée de vie.
EP05821943A 2004-11-09 2005-11-08 Unite de connexion pour modules solaires photovoltaiques Withdrawn EP1836734A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004053942A DE102004053942A1 (de) 2004-11-09 2004-11-09 Anschlusseinheit für photovoltaische Solarmodule
PCT/EP2005/011893 WO2006050890A1 (fr) 2004-11-09 2005-11-08 Unite de connexion pour modules solaires photovoltaiques

Publications (1)

Publication Number Publication Date
EP1836734A1 true EP1836734A1 (fr) 2007-09-26

Family

ID=35788155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05821943A Withdrawn EP1836734A1 (fr) 2004-11-09 2005-11-08 Unite de connexion pour modules solaires photovoltaiques

Country Status (4)

Country Link
US (1) US20080006321A1 (fr)
EP (1) EP1836734A1 (fr)
DE (1) DE102004053942A1 (fr)
WO (1) WO2006050890A1 (fr)

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WO2006050890A1 (fr) 2006-05-18
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