Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L31/00—Semiconductor devices 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; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
  • H01L31/02—Details
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L31/00—Semiconductor devices 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; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
  • H01L31/04—Semiconductor devices 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; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
  • H01L31/042—PV modules or arrays of single PV cells
  • H01L31/048—Encapsulation of modules
  • H01L31/049—Protective back sheets
• • 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 solar module with backsheet, which protects the interior of the solar module against moisture, partially against ultraviolet light and mechanical influences and is electrically insulating, wherein the backsheet is composed of at least two different films or constructed, between which an adhesive layer is located.
• Such solar modules with backsheets are diverse, for example from DE 10 2008 027 000 AI, known and the backsheets have the advantage that they protect the interior of the solar module in the manner mentioned and shield the fitter against the electrical current, where they have a high Life expectancy of, for example, about 25 years, so that they can perform this protective function correspondingly long without repair and results in a high current efficiency.
• the single film or the position of the backsheet located furthest outwards in the position of use is in part effective against ultraviolet light and against moisture.
• the film located further inside usually serves for electrical insulation and can at the same time serve as a connecting film to the Einkappslungsmaterial or the embedding mass of the solar module or to serve a third layer or film of the multilayer back sheet.
• a solar module with backsheet of the type defined above that in at least one adhesive layer between two sheets of the backsheet detectable pigments are incorporated.
• the backsheet contains no or "false" detectable pigments
• the backsheet has at least three individually stacked, in particular different individual films, each between have an adhesive layer, and when the detectable pigments are incorporated in at least one or all of the adhesive layers.
• a significant advantage is the fact that the pigments are arranged in the adhesive layer (s), so that the different individual foils from which the backsheet is constructed can be unchanged, ie they can continue to perform their sub-functions well. These individual films are thus advantageously free of pigment or detection agent, so they do not require any special additional processing.
• the very common case of one consisting of three individual foils Backsheet thus allows the storage of the pigments used as detection means in one or in two adhesive layers in order to also be able to produce differences to plagiarisms.
• detectable pigments are provided which react to predetermined preselected detection agents. It can thereby be achieved that detection means other than these are not recognized and thus also those "incorrect" detection means containing solar modules are not assigned to the original manufacturer.
• detection means other than these are not recognized and thus also those "incorrect" detection means containing solar modules are not assigned to the original manufacturer.
• a particularly favorable embodiment can provide that the embedded in at least one adhesive layer detection means pigments of rare Earths or rare earth compounds Such detection means are known per se, so that they allow a correspondingly simple verification.
• the detection means or pigments are expediently infrared and / or ultraviolet sensitive.
• the thickness of each of the different backsheet forming films may be from 6 to 500 microns, preferably from about 50 to 250 microns. Such film thicknesses provide a robust and durable backsheet.
• the different individual films forming the backsheet can all be different plastic films or else plastic films and an aluminum foil.
• a solar energy system results.
• dul whose backsheet may indeed be constructed from conventional unmodified individual foils, but contains within the or the adhesive layers admixed substances as a detection agent, in particular pigments of rare earths or of oxides of rare earths.
• they may be security pigments, as described in DE 10 2007 058 601 AI as state of the art and / or as innovation.
• FIG. 1 shows a section extending from the surface to the backsheet through a solar or photovoltaic module in the form of a laminate, consisting of a glass plate facing the sun in the position of use, a core layer and the backsheet according to the invention
• FIG. 2 greatly enlarged and with gaps which are not present in practice two individual foils forming a backsheet film and an adhesive layer arranged therebetween, FIG.
• FIG. 3 a representation corresponding to FIG. 2 of the construction of a backsheet with three individual foils and according to two adhesive layers and FIG. 3
• Fig. 4 the structure of a backsheet of four individual sheets with three adhesive layers.
• a generally denoted by 1, in Fig. 1 schematically illustrated in section solar or photovoltaic module has in a known manner at its lower or rear position in use position a backsheet 2, which the interior of the solar module 1 against moisture, in part against ultraviolet light or protects mechanical influences and is electrically insulating.
• a glass plate 3 On the upper side facing away from the backsheet 2 is a glass plate 3 and between this and the backsheet 2, a core layer 4 is arranged, the main part of which is the solar cell system 5, which is arranged in an embedding mass 6, which is provided on both sides of this solar cell system 5.
• the glass plate 3 is located on the optically active side of the solar cells 5, while the backsheet 2 closes the back of these solar cells 5 and acts directly on the embedding mass 6.
• the backsheet 2 can be constructed from at least two different individual foils 7 and 8 with an adhesive layer 9 arranged therebetween.
• Fig. 3 shows an embodiment in which the backsheet 2 consists of three individual sheets 7, 8 and 10 and two intermediate adhesive layers 9, while according to FIG. 4, the structure of the backsheet 2 four individual sheets 7, 8, 10 and 11 with according to three adhesive layers 9 includes.
• at least one adhesive layer 9 incorporates a detection means, not visible in the drawing, in the form of detectable pigments.
• the individual films 7, 8, 10 and optionally 11 may therefore consist of commercially available materials and only at their bonding is to be ensured in at least one adhesive layer 9 or optionally in two or more adhesive layers 9 for the storage of the detection means.
• FIG. 3 shows, for example, in schematic form the structure of the backsheet 2 of three superimposed different individual sheets 7, 8 and 10, each having an adhesive layer 9 between them, wherein the detection means or the detectable pigments incorporated in one or both adhesive layers 9 could be.
• Detectable pigments are provided which react to predetermined preselected detection means, for example irradiations.
• Both the thickness of the individual individual films forming the backsheet 2 and the materials of these films are known, and the thickness may be between about 6 to about 500 micrometers, preferably about 50 to 250 micrometers.
• the solar module 1 with conventional structure and thereby a backsheet 2 should be nondestructively identified and / or assigned to a specific manufacturer, that in the consisting of individual sheets and at least one adhesive layer 9 rear side of this adhesive layer 9 detectable pigments or detection means are embedded.

Landscapes

• Physics & Mathematics (AREA)
• Condensed Matter Physics & Semiconductors (AREA)
• Electromagnetism (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Power Engineering (AREA)
• Photovoltaic Devices (AREA)
• Laminated Bodies (AREA)
• Adhesives Or Adhesive Processes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=45315716

Family Applications (1)

Country Status (4)

Citations (2)

Family Cites Families (7)

• 2011
  • 2011-02-09 DE DE102011010776.2A patent/DE102011010776B4/de not_active Expired - Fee Related
  • 2011-12-02 EP EP11794035.3A patent/EP2673808A1/fr not_active Withdrawn
  • 2011-12-02 CN CN2011800671551A patent/CN103380499A/zh active Pending
  • 2011-12-02 WO PCT/EP2011/006041 patent/WO2012107063A1/fr active Application Filing

Patent Citations (2)

Non-Patent Citations (1)

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