EP2289111A2 - Module solaire léger, résistant à la flexion et autoportant et procédé de fabrication d'un tel module - Google Patents

Module solaire léger, résistant à la flexion et autoportant et procédé de fabrication d'un tel module

Info

Publication number
EP2289111A2
EP2289111A2 EP09761413A EP09761413A EP2289111A2 EP 2289111 A2 EP2289111 A2 EP 2289111A2 EP 09761413 A EP09761413 A EP 09761413A EP 09761413 A EP09761413 A EP 09761413A EP 2289111 A2 EP2289111 A2 EP 2289111A2
Authority
EP
European Patent Office
Prior art keywords
layer
solar
adhesive layer
optionally
sandwich element
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Withdrawn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
EP09761413A
Other languages
German (de)
English (en)
Inventor
Hubert Ehbing
Gunther Stollwerck
Dirk Wegener
Jens Krause
Elke Springer
Heike Schmidt
Frank Schauseil
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.)
Bayer Intellectual Property GmbH
Original Assignee
Bayer MaterialScience AG
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 Bayer MaterialScience AG filed Critical Bayer MaterialScience AG
Publication of EP2289111A2 publication Critical patent/EP2289111A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
    • 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
    • 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
    • H02S20/00—Supporting structures for PV modules
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/23—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • B32B2037/1223—Hot-melt adhesive film-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/12—Photovoltaic modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor

Definitions

  • the present invention relates to a photovoltaic solar module and a method for its production.
  • Solar modules are components for direct generation of electricity from sunlight. Key factors for a cost-efficient generation of solar power are the efficiency of the solar cells used, as well as the manufacturing costs and the durability of the solar modules.
  • a solar module usually consists of a framed composite of glass, interconnected solar cells, an embedding material and a backside construction.
  • the front glass protects against mechanical and weather influences. It must have the highest transparency in order to minimize absorption losses in the optical spectral range of 300 nm to 1150 nm and thus efficiency losses of the silicon solar cells usually used for power generation.
  • hardened, low-iron white glass usually hardened, low-iron white glass
  • the glass provides a significant contribution to the rigidity of the module.
  • the embedding material (usually EVA (ethyl vinyl acetate) films used) is used for bonding the entire module network. EVA melts during a lamination process at about 150 0 C, flows into the interstices of the soldered solar cells and is thermally crosslinked.
  • the back of the module protects the solar cells and the embedding material from moisture and oxygen. In addition, it serves as mechanical protection against scratching etc. when mounting the solar modules and as electrical insulation.
  • another glass or a composite foil can be used.
  • PVF polyvinyl fluoride
  • PET polyethylene terephthalate
  • PVF aluminum PVF are used.
  • the encapsulating materials used in solar module construction must in particular have good barrier properties against water vapor and oxygen. Water vapor or oxygen does not attack the solar cells themselves, but causes corrosion of the metal contacts and chemical degradation of the EVA embedding material. A destroyed solar cell contact leads to a complete failure of the module, since normally all solar cells in a module are electrically connected in series. A degradation of the EVA is shown by a the module, combined with a corresponding reduction in power through light absorption and a visual deterioration.
  • Today, about 80% of all modules are encapsulated with one of the described composite foils on the back, and about 15% of the solar modules use front and back glass. In this case, as embedding material instead of EVA partially highly transparent, but only slowly (several hours) hardening casting resins
  • solar modules In order to achieve competitive electricity generation costs of solar power despite the relatively high investment costs, solar modules must achieve long operating times. Today's solar modules are therefore designed for a service life of 20 to 30 years. In addition to high weathering stability, high demands are placed on the thermal stability of the modules, whose temperature during operation can fluctuate cyclically between 80 ° C at full solar irradiation and temperatures below the freezing point. Accordingly, solar modules undergo extensive stability tests (standard tests to IEC 61215 and IEC 61730), which include weather tests (UV irradiation, damp heat, temperature change), but also hail impact tests and tests of electrical insulation capacity.
  • said aluminum frames In order to prevent the ingress of water and oxygen, said aluminum frames have an additional seal on their inner side facing the solar module. Furthermore disadvantageous added that aluminum frames are made of rectangular profiles and therefore is severely limited in terms of their shape.
  • the polymeric material used is an elastomeric polyurethane.
  • the said polyurethane should preferably have an E modulus in a range of 200 to 10,000 psi (corresponding to about 1.4 to 69.0 N / mm 2 ).
  • reinforcing members of, for example, a polymeric material, steel, or aluminum may be incorporated into the frame when formed.
  • fillers can be incorporated into the frame material. These may be, for example, platelet-type fillers such as the mineral wollastonite or needle-like / fibrous fillers such as glass fibers.
  • DE 37 37 183 Al also describes a method for producing the plastic frame of a solar module, wherein the Shore hardness of the material used is preferably adjusted so that a sufficient rigidity of the frame and an elastic receptacle of the solar generator is ensured.
  • the modules described above are erected by means of stand constructions or, for example, mounted on roof structures. They require a certain modulus rigidity, which is adversely affected by a (plastic) frame and the relatively heavy, about 3 to 4 mm thick front glass.
  • the front screen already has a certain absorption due to its thickness, which in turn adversely affects the efficiency of the solar module.
  • Foil modules are the embedding of solar cells between two plastic films, possibly also between a front, translucent film and a flexible sheet (aluminum or stainless steel) on the back.
  • aluminum or stainless steel aluminum or stainless steel
  • "UNIsolar ®” film laminates consist of thin, thin-film silicon vapor-deposited on thin stainless steel sheet, embedded between two plastic sheets, which then have to be applied to a rigid support structure such as sheet roofs or roof elements
  • DE 10 2005 032 716 A1 describes a flexible solar module that subsequently has to be applied to a rigid support structure.
  • the disadvantage here is the additional step, the subsequent bonding with a support structure. Due to the different coefficients of thermal expansion of the plastic frame and the glass occurred in the past again and again delamination of moisture penetration into the inner region of the solar module, which ultimately led to the destruction of the module.
  • the solar module should have the lowest possible basis weight and at the same time be as rigid as possible, so that no or only a very simple support or mounting structure is required and it can be handled easily. Furthermore, the solar module should have sufficient composite long-term stability to prevent delamination and / or moisture from entering.
  • the invention relates to a solar module with a structure structure
  • a sandwich element C) comprising at least one core layer and at least one outer layer located on each side of the core layer, optionally with attachment and electrical connection elements.
  • the solar module Due to its sufficiently high bending stiffness, such a construction has sufficiently high stability. Due to this sufficiently high rigidity, the solar module is easy to handle and does not bend even after a long time (for example, with a spaced attachment to non-vertical surfaces).
  • the difference of the coefficient of thermal expansion of the sandwich element C) compared to that of the transparent layer A) and that of the solar cells is very small, so that mechanical stresses hardly occur and the risk of delamination is very low.
  • the sandwich element C) of the solar module according to the invention further serves to seal the solar module against external influences.
  • an additional barrier layer for example in the form of a barrier film
  • this seal can be additionally optimized. It is preferably applied directly in the production of the sandwich element and can be located both on the side facing away from the adhesive layer of the sandwich element and between the adhesive layer and sandwich element.
  • the barrier film can be inserted, for example, in the pressing tool before the sandwich element is inserted.
  • the barrier layer can also be produced by InMold coating by spraying the barrier layer into the pressing tool before inserting the sandwich element. Alternatively, the barrier film can also be subsequently glued to the sandwich element. A subsequent encapsulation of the sandwich element with a barrier layer is also possible.
  • the attachment of the solar module to the respective substrate for example, house roofs or walls
  • the solar module therefore preferably has in the sandwich element already integrated fastening means, recesses and / or holes, via which an attachment to the respective substrate can take place.
  • the sandwich element preferably receives the electrical connection elements, so that subsequent attachment, e.g. can be omitted from junction boxes.
  • the sandwich element C) is preferably based on polyurethane (PUR), since in this case particularly high bending stiffnesses are obtained.
  • PUR polyurethane
  • Such a sandwich element C) consists of a core layer and on both sides of the core layer arranged fiber layers, which are impregnated with a polyurethane resin.
  • the known methods come into question: NafpurTec method, LFI / FipurTec method or
  • the polyurethane resin used can be obtained by reacting
  • At least one polyol component having an average OH number of 300 to 700 and containing at least one short-chain and one long-chain polyol, the starting polyols having a functionality of 2 to 6,
  • AIs long-chain polyols are preferably suitable polyols having at least two to not more than six isocyanate-reactive H atoms; Polyester polyols and polyether polyols which have OH numbers of from 5 to 100, preferably from 20 to 70, particularly preferably from 28 to 56, are preferably used.
  • Preferred short-chain polyols are those which have OH numbers of from 150 to 2,000
  • Water is used in amounts of 0 to 3.0, preferably 0 to 2.0 parts by weight per 100 parts by weight of polyol formulation (components 2) to 6)).
  • the usual activators for the blowing and crosslinking reaction e.g. Amines or metal salts used.
  • Suitable foam stabilizers are preferably polyether siloxanes, preferably water-soluble components.
  • the stabilizers are usually used in amounts of from 0.01 to 5 parts by weight, based on 100 parts by weight of the polyol formulation (components 2) to 6)).
  • the reaction mixture for the preparation of the polyurethane resin can optionally be added to auxiliaries, release agents and additives, for example surface-active additives, such as. Emulsifiers, flame retardants, nucleating agents, antioxidants, lubricants and mold release agents, dyes, dispersants, blowing agents and pigments.
  • surface-active additives such as. Emulsifiers, flame retardants, nucleating agents, antioxidants, lubricants and mold release agents, dyes, dispersants, blowing agents and pigments.
  • the components are reacted in amounts such that the equivalence ratio of the NCO groups of the polyisocyanates 1) to the sum of the isocyanate-reactive hydrogens of components 2) and 3) and optionally 4), 5) and 6) 0.8: 1 to 1.4: 1, preferably 0.9: 1 to 1.3: 1.
  • rigid foams preferably polyurethane (PUR) or polystyrene foams, Balsahölzer, corrugated sheets, spacers (for example, from large-pored open plastic foams), honeycomb structures, such as metals, impregnated papers or plastics, or from the state
  • PUR polyurethane
  • honeycomb structures such as metals, impregnated papers or plastics, or from the state
  • the technique eg Klein, B., lightweight construction, Verlag Vieweg, Braunschweig / Wiesbaden, 2000, page 186 ff
  • moldable, in particular thermoformable, rigid foams (eg rigid polyurethane foams) and honeycomb structures which enable a curved or a three-dimensional shaping of the solar module to be produced.
  • hard foams with good insulating properties are preferred.
  • the Element C) in particular the core layer also serves for the isolation, in particular the thermal insulation.
  • glass fiber mats As fiber material for the fiber layers, glass fiber mats, glass fiber mats, Glasmaschinewirrlagen, glass fiber fabric, cut or ground glass or mineral fibers, natural fiber mats and knitted fabrics, cut natural fibers, as well as fiber mats, nonwovens and -wirirke based on
  • Polymer, carbon or aramid fibers and their mixture can be used.
  • the production of the sandwich elements C) can be carried out so that first of all a fibrous layer is applied to the core layer on both sides, which is acted upon by the polyurethane starting components 1) to 6).
  • the fiber reinforcing material can also be incorporated with the polyurethane raw materials 1) to 6) by suitable mixing head technology.
  • the thus prepared blank from the three layers is transferred to a mold and the mold is closed. The reaction of the PUR components bonds the individual layers together.
  • the sandwich element C) is characterized by a low basis weight of 1500 to 4000 g / m 2 and a high flexural strength of 0.5 to 5 ⁇ 10 6 N / mm 2 (based on 10 mm sample width).
  • the sandwich element in comparison to other supporting structures made of plastics or metals, such as plastic blends (polycarbonate / acrylonitrile-butadiene-styrene, polyphenylene oxide / polyamide), sheet-molding compound (SMC) or aluminum and steel sheet at comparable bending stiffness significantly lower basis weights ,
  • plastic blends polycarbonate / acrylonitrile-butadiene-styrene, polyphenylene oxide / polyamide
  • SMC sheet-molding compound
  • aluminum and steel sheet at comparable bending stiffness significantly lower basis weights
  • the transparent layer A) may consist of the following materials: glass, polycarbonate, polyester, polymethyl methacrylate, polyvinyl chloride, fluorine-containing polymers, epoxies, thermoplastic polyurethanes or any combination of these materials. Furthermore, it is also possible to use transparent polyurethanes based on aliphatic isocyanates. As Isocyante HDI (hexamethylene diisocyanate), EPDI (isophorone diisocyanate) and / or H 12-MDI (saturated Methylendiphenyldiisocyanat) are used. Come as a polyol component
  • Polyether and / or polyester polyols for use and chain extenders preferably aliphatic systems are used.
  • the layer A) can be designed as a plate, film or composite film.
  • a transparent protective layer for example in the form of a lacquer or a plasma layer.
  • the transparent layer A) could be set softer, whereby voltages in the module can be further reduced. Protection against external influences would take over the additional protective layer.
  • the adhesive layer B) has the following properties: high transparency in the range of 350 nm to 1 150 nm, good adhesion to silicon and to the material of the transparent layer A) and to the sandwich element C).
  • the adhesive layer may consist of one or more adhesive films, which are laminated to the layer A) and / or the sandwich element.
  • the adhesive layer B) is soft to compensate for the stresses caused by the different thermal expansion coefficients of transparent layer A), solar cells and sandwich element C).
  • the adhesive layer B) is preferably made of a thermoplastic polyurethane, which may optionally be colored.
  • the coefficient of thermal expansion of sandwich element C) is preferably 10 to 20 ⁇ 10 -6 K -1 , depending on the sandwich composition and fiber reinforcement.
  • the solar module preferably has a circumferential polyurethane frame, which can be retrofitted by RIM, R-RIM, S-RIM, RTM, spraying or casting.
  • Another object of the invention is a method for producing the solar modules according to the invention, characterized in that
  • a sandwich element C) comprising at least one core layer and at least one outer layer located on each side of the core layer and optionally with
  • an adhesive layer B) in the form of a plastic film or as a mass is applied to the sandwich element C),
  • the solar cells are placed on the adhesive layer B) or embedded in the adhesive layer B) or a solar film is applied to the adhesive layer B),
  • a transparent plastic film optionally having an adhesive layer B), and / or a transparent layer A) is applied to the solar cells
  • the abovementioned layer structure is optionally pressed in with the effect of temperature and / or optionally under application of a vacuum.
  • the sandwich element C) can be presented either as a finished pressed or bonded sandwich element or as a non-bonded sandwich element in which the layers have not yet been pressed or joined.
  • the method can also be carried out by initially introducing the transparent layer A) (eg a plastic film). Subsequently, an adhesive layer B) in the form of a Plastic film or as a mass applied to the layer A). The solar cells or the solar film are placed on the adhesive layer B) or embedded in the adhesive layer B). Subsequently, a sandwich element C), which optionally has an adhesive layer B), is applied. Preferably, then optionally pressed under the influence of temperature.
  • the transparent layer A eg a plastic film
  • an adhesive layer B in the form of a Plastic film or as a mass applied to the layer A.
  • the solar cells or the solar film are placed on the adhesive layer B) or embedded in the adhesive layer B).
  • a sandwich element C which optionally has an adhesive layer B
  • is applied Preferably, then optionally pressed under the influence of temperature.
  • the method can also be carried out so that initially a finished film module from the
  • this film module has an adhesive layer B), preferably of thermoplastic polyurethane, on the side facing the sandwich element to be applied.
  • a not yet connected film module can be submitted by initially a transparent layer A) is submitted. Subsequently, an adhesive layer B) in the form of a plastic film or as a mass on the transparent layer A) is applied. Subsequently, the solar cells or the solar film are placed on the adhesive layer B) or embedded in the adhesive layer B). Subsequently, if necessary, a further adhesive layer B) - preferably applied from a thermoplastic polyurethane.
  • not yet connected film module On the presented, finished connected film module or on the only presented, not yet connected film module then also preferably not yet pressed sandwich element (preferably a PUR sandwich) is placed. Subsequently, if necessary, the mixture is compressed while increasing the temperature. The pressing process hardens the sandwich element and connects it to the film module in the same work step. Will not be connected
  • sandwich element preferably a PUR sandwich
  • the pressing operation is used simultaneously to connect the laminate layers with each other.
  • additional functional layers and elements can be inserted before the pressing process and connected to the solar module by the pressing process.
  • a barrier foil against oxygen and moisture e.g.
  • PVF polyvinyl fluoride
  • PET polyethylene terephthalate
  • PVF aluminum PVF composite films PVF barrier films
  • these barrier films in turn have an adhesive layer for good adhesion to the sandwich element C).
  • these barrier films can also be attached to the rear side (the side facing away from the light) of the sandwich element C).
  • an additional insulation layer for example, a rigid polyurethane foam.
  • media lines can be pressed with. These lines can be made of plastic or plastic Copper exist. Preferably, these lines are placed close to the layer B) and can be used for cooling the solar module via a heat dissipating medium (eg water). By an internal cooling of the solar module, the electrical efficiency can be increased.
  • a heat dissipating medium eg water
  • the solar modules according to the invention generate electricity and at the same time act as an insulating layer, so that they can also be used well as a roofing. They are very light and stiff at the same time. By pressing, they can also be converted into three-dimensional structures, so that they can be well adapted to voddede roof structures.
  • the arrangement consists of a transparent adhesive layer 1, in which the cell connectors 2 are connected
  • Solar cells 3 are embedded. Above it is a transparent, UV-stable, thin front layer 4, consisting for example of a thin glass pane. On the back side there is the load-bearing sandwich element 5, consisting of a core layer 6 and glass fiber layers 7 bonded by polyurethane. Fastening elements 8 and an electrical junction box 9 are integrated into the load-bearing sandwich element.
  • the sandwich element is followed by a barrier film 10, which prevents the entry of water and oxygen.
  • the solar module has a circumferential edge protection 11 made of elastomeric polyurethane, which prevents lateral penetration of water, dirt and oxygen.
  • the front layer used was a 125 ⁇ m thick polycarbonate film (type Makrofol® DE 1-4 from Bayer MaterialScience AG, Leverkusen). Two 480 .mu.m thick EVA films were used (type Vista ® from Solar Etimex, Rottenacker) as an adhesive layer. As a sandwich element Baypreg ® sandwich was used.
  • the solar module thus produced was in a solar simulator under a standard spectrum
  • the un-weathered module had an efficiency of 13.4% (+/- 0.5%).
  • a climate change test was carried out with the module. 302 cycles were cycled (between -40 0 C and + 85 ° C). After this weathering, the efficiency measured in the solar simulator was 12.8% (+/- 0.5%).

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Fluid Mechanics (AREA)
  • Photovoltaic Devices (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un module solaire composé d'une couche adhésive transparente (1) dans laquelle sont intégrées les cellules solaires (3) interconnectées par des connecteurs de cellule (2). Une couche avant mince transparente (4) stable aux rayons UV, par exemple composée d'une fine plaque de verre, se trouve au-dessus de ladite couche adhésive. L'élément sandwich porteur (5) composé d'une couche centrale (6) et de couches de fibres de verre (7) reliées par du polyuréthane se trouve sur la face arrière. Des éléments de fixation (8) et une prise électrique (9) sont intégrés dans l'élément sandwich porteur. Un film barrière (10) empêchant l'entrée d'eau et d'oxygène est adjacent à l'élément sandwich. Le module solaire présente une protection de bord circonférentielle (11) en polyuréthane élastomère qui empêche la pénétration d'eau, de poussière et d'oxygène par les côtés. L'invention concerne également un procédé de production dudit module solaire.
EP09761413A 2008-06-12 2009-06-03 Module solaire léger, résistant à la flexion et autoportant et procédé de fabrication d'un tel module Withdrawn EP2289111A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008028069 2008-06-12
DE102009014348A DE102009014348A1 (de) 2008-06-12 2009-03-21 Leichtes, biegesteifes und selbsttragendes Solarmodul sowie ein Verfahren zu dessen Herstellung
PCT/EP2009/003951 WO2009149850A2 (fr) 2008-06-12 2009-06-03 Module solaire léger, résistant à la flexion et autoportant et procédé de fabrication d'un tel module

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EP2289111A2 true EP2289111A2 (fr) 2011-03-02

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US (1) US20110155222A1 (fr)
EP (1) EP2289111A2 (fr)
JP (1) JP2011523221A (fr)
KR (1) KR20110014198A (fr)
CN (1) CN102067329A (fr)
AU (1) AU2009256920A1 (fr)
BR (1) BRPI0915003A2 (fr)
CA (1) CA2727413A1 (fr)
DE (1) DE102009014348A1 (fr)
IL (1) IL209544A0 (fr)
MX (1) MX2010013465A (fr)
WO (1) WO2009149850A2 (fr)

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CN102067329A (zh) 2011-05-18
KR20110014198A (ko) 2011-02-10
BRPI0915003A2 (pt) 2019-09-24
JP2011523221A (ja) 2011-08-04
AU2009256920A1 (en) 2009-12-17
WO2009149850A2 (fr) 2009-12-17
CA2727413A1 (fr) 2009-12-17
WO2009149850A3 (fr) 2010-11-04
MX2010013465A (es) 2010-12-21
IL209544A0 (en) 2011-01-31
DE102009014348A1 (de) 2009-12-17
US20110155222A1 (en) 2011-06-30

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