EP4399748A1 - Module photovoltaïque flexible - Google Patents
Module photovoltaïque flexibleInfo
- Publication number
- EP4399748A1 EP4399748A1 EP22769733.1A EP22769733A EP4399748A1 EP 4399748 A1 EP4399748 A1 EP 4399748A1 EP 22769733 A EP22769733 A EP 22769733A EP 4399748 A1 EP4399748 A1 EP 4399748A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- module
- photovoltaic
- equal
- slot
- slots
- 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.)
- Pending
Links
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- 150000002825 nitriles Chemical class 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
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- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
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- 239000004416 thermosoftening plastic Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
Definitions
- the present invention relates to a photo voltaic module, its method of manufacture and its method of use.
- Photovoltaic modules are usually made flat and remain flat during use. In the case of integration of a photovoltaic module on a curved surface, the photovoltaic module is usually manufactured directly according to the desired curvature. Some modules are flexible in one direction.
- Patent applications US2010229937 and US20190312164 describe photovoltaic modules comprising a plurality of adjacent photovoltaic structures encapsulated in a transparent substrate between an upper layer and a lower protective layer.
- Patent application KR 10-2020-0067110 discloses a photovoltaic panel made from flexible materials, the photovoltaic panel itself being flexible and able to be integrated into a module.
- Patent application KR 10-1775977 describes a photovoltaic module comprising photovoltaic cells encapsulated in a flexible material and covered on either side with flexible films.
- Patent application CN106299002 relates to a photovoltaic module comprising a plurality of cells interconnected by flexible electrical conduction strips and encapsulated in a flexible material so as to adapt to the curvature of the upper surface of aircraft wings. and the deformations of the latter in flight.
- Patent applications KR10-2016-0050659 and US20160126380 describe a photovoltaic module having a plurality of chains of juxtaposed cells, the chains being formed by superimposing cells on a flexible support having electrical lines connecting the cells to each other and to the outside. The different chains are electrically connected to each other on the outside.
- the flexibility is provided by the use of flexible material encapsulating the cells, which makes it possible to have flexibility of the modules for small curvatures and mainly in a single direction.
- Patent application DE 10356690 relates to a photovoltaic module comprising grooves between the photovoltaic structures forming zones of thickness which offers flexibility.
- Patent application US4860509 describes a photovoltaic module between the photovoltaic structures of curved recesses to facilitate folding.
- Such photovoltaic modules cannot be integrated on surfaces with large curvatures, in particular on certain automobile roofs or certain building roofs, in particular because of the thickness of the photovoltaic modules.
- a photovoltaic module comprising a multilayer stack comprising at least: a transparent upper layer defining an upper surface of the module, a lower layer defining a lower surface of the module, at least two photovoltaic structures encapsulated in a transparent polymer encapsulation layer arranged between the lower and upper layers, the two photovoltaic structures being laterally spaced from each other, and at least one slot in the thickness of the photovoltaic module extending longitudinally at least partially between the two structures photovoltaic cells, the slot being closed at at least one of its longitudinal ends.
- encapsulated it is understood that the two photovoltaic structures are arranged in the encapsulation layer so that the latter completely surrounds them.
- Slot means an opening in the thickness of the narrow and elongated photovoltaic module along a longitudinal direction of extension. The presence of the slot in the module makes it possible to integrate, to apply the module to a support of great curvature by allowing the approximation of the photovoltaic structures to each other due to the curvature of the support.
- the slot is closed at one of its ends means that it has a length less than the dimension of the module in the direction of extension of the slot. This makes it possible to retain a strip of material from the module at the end of the slot, in particular for the passage of the electrical connections between the adjacent photovoltaic structures. This also makes it possible to have a one-piece module, which facilitates handling and integration on a curved surface.
- the photovoltaic module is configured to have a maximum radius of curvature in at least one direction, better still in two orthogonal directions, less than or equal to 10 m, better still less than or equal to 3 m.
- the photovoltaic module is configured to have a minimum radius of curvature along at least one direction, better still along two orthogonal directions, greater than or equal to 500 mm, better still greater than or equal to 1 m.
- the module may comprise several slots in the thickness of the photovoltaic module each extending longitudinally between two adjacent photovoltaic structures, the slots each being closed at at least one of their longitudinal ends.
- each photovoltaic structure comprises at least one photovoltaic cell, for example based on silicon, better still a plurality of photovoltaic cells electrically connected to each other by flexible conductive elements, in particular wires, conductive strips or in direct connection, and arranged according to at least one row.
- the photovoltaic cells of each photovoltaic structure can be arranged in at least two rows, in particular parallel to each other, the rows being electrically connected to each other, preferably by flexible conductive elements, in particular wires, conductive strips or in direct connection.
- the photovoltaic cells of the rows are electrically connected together in series.
- the rows of the same photovoltaic structure can be electrically connected together in parallel, or preferably in series.
- the photovoltaic structures are each elongated along a longitudinal axis.
- the longitudinal axes of the photovoltaic structures are parallel to the direction of extension of the adjacent slot or slots or form an angle less than or equal to 45°, better still less than or equal to 20°, even better less than or equal to 10 to the direction of extension of the slot or slots adjacent slots.
- the photovoltaic structures are parallel to one another.
- the adjacent photovoltaic structures in particular the closest edges of the photovoltaic cells of two adjacent photovoltaic structures, are spaced apart from each other by a distance less than or equal to 50 mm, better still less than or equal to 25 mm, even better still less than or equal to 20 mm before deformation of the photovoltaic module, that is to say flat.
- the adjacent photovoltaic structures in particular the closest edges of the photovoltaic cells of two adjacent photovoltaic structures, are spaced apart from each other by a distance greater than or equal to 5 mm, better still greater than or equal to 10 mm, before deformation of the module photovoltaic, i.e. flat.
- the photovoltaic structures are electrically interconnected within the encapsulation layer, in particular by one or more conductive elements, in particular flexible elements, encapsulated in the encapsulation layer.
- the flexible conductive elements extend into an area of the continuous module of material at the closed end of the slot between adjacent photovoltaic structures.
- the slot(s) are straight.
- the slot or slots can be of another shape, in particular curved or wavy.
- the direction of longitudinal extension of the slot(s) corresponds to the length of the module.
- the slots are parallel to each other.
- the slots are of substantially identical length.
- the slots are of substantially identical shapes.
- the slot or slots have a length greater than or equal to 30%, better still greater than or equal to 40%, better still greater than or equal to 50%, even better still greater than or equal to 60%, preferably greater than or equal to 95%, of the dimension of the photovoltaic module in the direction of extension of the slot.
- the length of the slot(s) is configured so that the strip of material extending between the closed end of the slot and the edge of the module in the direction of longitudinal extension of the slot is of a dimension in the direction of longitudinal extension of the slot greater than or equal to 10 mm, better still greater than or equal to 20 mm.
- the slot or slots have a longitudinal end open to the outside on an edge of the module.
- the slot or slots have two closed longitudinal ends.
- the open longitudinal ends of the successive slots along an axis perpendicular to the direction of longitudinal extension of the slots can alternately open outwards on opposite edges of the module.
- the open longitudinal ends of the successive slots along an axis perpendicular to their direction of longitudinal extension extend outwards from the same edge of the module.
- the maximum width of the slot or slots is less than or equal to 40 mm, preferably between 3 mm and 25 mm, better still between 3 mm and 10 mm, for example of the order of 5 mm.
- the closed end of the or each of the slots has a rounded shape, in particular an oval or circular shape.
- a shape makes it possible to reduce the effect of accumulation of mechanical stresses at the level of the closed end of the slots.
- the closed end of the or each of the slots has a greater dimension transverse to the direction of longitudinal extension of the slot as high as possible while keeping the necessary electrical insulation distances indicated in the IEC 61215 standards. and 61730 vis-à-vis adjacent photovoltaic structures, in particular a diameter greater than or equal to 1 mm.
- the greatest dimension transverse to the direction of longitudinal extension of the closed end of the slot is substantially equal to its width at the level of its opening towards the outside.
- the slot or slots have a variable width over at least part of their length.
- the slot or slots may have a decreasing width over a part of the length of the slot or slots towards the closed end of the corresponding slot.
- the longitudinal edges of the slot can form between them a non-zero angle less than or equal to 20°, better still less than or equal to 15°, even better less than or equal to 5°.
- the slot or slots are of decreasing width from an open end outwards on a side edge of the module to the closed end.
- the slot or slots are of constant width.
- the longitudinal edges of the slot(s) are spaced from the edge of the nearest photovoltaic cell by a minimum distance greater than or equal to 0.5 mm, better still greater than or equal to 5 mm, even better still greater than or equal to 15 mm, Such a distance makes it possible to maintain good insulation between adjacent photovoltaic structures while having a compact module.
- the slot can be filled, in particular after curvature on the final surface, with a filling material, in particular based on a polymer.
- a filling material in particular based on a polymer.
- the module may comprise at least two adjacent and joined sub-modules each comprising at least two photovoltaic structures as described above and at least one slot as described above extending between the two photovoltaic structures of the sub-module.
- the photovoltaic structures of the same sub-module are electrically connected in series.
- the two sub-modules can be connected electrically in parallel or in series with respect to each other.
- the slot or slots of each sub-module have an open end towards the outside of the same edge of the module.
- the slots of the two sub-modules open outwards on two opposite side edges of the module.
- the photovoltaic structures of the two sub-modules extend along the same longitudinal axis two by two and the slot or slots of the two sub-modules extend two by two in the same direction of longitudinal extension.
- each photovoltaic structure of two sub-modules comprises at least two rows of photovoltaic cells, in particular parallel to each other, the rows of the same photovoltaic structure being electrically connected to each other, in particular in series.
- the module or each sub-module may comprise at least n photovoltaic structures spaced from each other laterally and separated from each other by at least n-1 slots as described above, n is greater than or equal to 2, better still greater than or equal to 4.
- the n photovoltaic structures are electrically connected in series with each other.
- the width of each structure is less than or equal to 220 mm, better still less than or equal to 165 mm, better still less than or equal to 90 mm.
- the photovoltaic structures are parallel.
- each photovoltaic structure extends over more than 60%, better still more than 70% of the dimension of the module or of the sub-module along the longitudinal axis of the photovoltaic structure.
- the slots extend over more than 50% of the dimension of the module or of the sub-module in the direction of extension of said slot, better over more than 60%, even better over more by 95%.
- each photovoltaic structure has a thickness, in particular corresponding to the thickness of the cells with the flexible conductive elements, of between 100 and 800 ⁇ m.
- the upper layer is a glass or polymer plate, in particular made of a transparent material, preferably chosen from ethylene chlorotrifluoroethylene (ECTFE), fluorinated ethylene propylene (FEP), ethylene tetrafluoroethylene (ETFE), poly(vinylidene fluoride) (PVDF), polyacrylic methyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), and their mixture or a multilayer of the aforementioned materials.
- ECTFE ethylene chlorotrifluoroethylene
- FEP fluorinated ethylene propylene
- ETFE ethylene tetrafluoroethylene
- PVDF poly(vinylidene fluoride)
- PMMA polyacrylic methyl methacrylate
- PC polycarbonate
- PET polyethylene terephthalate
- the top layer may be of a flexible material.
- the thickness of the upper layer can be between 10 ⁇ m and 3000 ⁇ m.
- the lower layer is a plate of glass or polymer, in particular made of a prepreg of a polymer impregnating fibers, in particular having a basis weight less than or equal to 600 g/m 2 .
- the polymer can be made of a material chosen from polyesters, epoxy, silicones, PMMA, PC, rubber, nitriles, acrylics, polyamides, polyurethane.
- the fibers can include magnetic or mineral fillers, glass, carbon, aramid or natural fibers such as hemp, linen or silk.
- the lower layer can be made of a polymer material alone.
- the lower layer can be of a flexible material.
- the bottom layer can be opaque or transparent.
- the lower layer is magnetic, in particular it comprises a magnetic material. This facilitates the mechanical holding of the module on the curved surface, in particular when the support of the module has ferromagnetic properties, and thus facilitates its installation and its dismantling.
- the lower layer can be formed by a composite material formed from a synthetic elastomer, for example a butadiene-acrylonitrile copolymer, filled with a powder of a hard ferromagnetic material, preferably magnetized, for example strontium ferrite grains.
- a synthetic elastomer for example a butadiene-acrylonitrile copolymer
- a powder of a hard ferromagnetic material preferably magnetized, for example strontium ferrite grains.
- the powder of the lower layer has a Curie temperature greater than or equal to the maximum temperature reached by the lower layer during the manufacture of the module, in particular during the step of laminating the layers together.
- the module may comprise a ferromagnetic plate, in particular made of integrated steel, in particular placed between the photovoltaic structures and a lower face of the module.
- the plate can be integrated into the polymer encapsulation layer or integrated into the lower layer.
- the lower layer may be multilayered and comprise an underlayer made of a magnetic material, in particular as described previously, and the ferromagnetic plate, in particular made of steel.
- the bottom layer may include an encapsulant underlayer or an adhesive between the magnetic underlayer and the ferromagnetic plate.
- Such a ferromagnetic plate improves the holding of the module on its magnetic support by increasing the force necessary to tear the module from the support.
- the thickness of the lower layer can be between 10 ⁇ m and 10mm.
- the encapsulation layer can be formed of at least two sub-layers laminated together, a sub-layer extending between the photovoltaic structures and the upper layer and a sub-layer extending between the photovoltaic structures and the layer lower.
- the encapsulation layer is made of a flexible material.
- the encapsulation layer may be made of a material chosen from crosslinked ethylene-vinyl acetate (EVA) elastomers, crosslinked thermoplastic polyolefin (POR)-based elastomers, polyolefin-based thermoplastic elastomers (TPO), silicone , thermoplastic polyurethane, polyvinyl butyral and/or functional polyolefin, ionomers (“ionically cross-linked” thermoplastic copolymer).
- EVA crosslinked ethylene-vinyl acetate
- POR crosslinked thermoplastic polyolefin
- TPO polyolefin-based thermoplastic elastomers
- silicone silicone
- thermoplastic polyurethane polyvinyl butyral and/or functional polyolefin
- ionomers ionically cross-linked” thermoplastic copolymer
- the thickness of the encapsulation layer may be greater than or equal to 200 ⁇ m, in particular between 400 ⁇ m and 1000 ⁇ m.
- the upper, lower and encapsulation layers are made of materials each having a Young's modulus of less than 5 GPa.
- the encapsulation layer is in direct contact with the upper and lower layers.
- the module and/or the sub-modules can have polygonal contours, in particular rectangular or square, oval or circular.
- the length of the module can be between 75 mm and 4 m, better still between 1 m and 2 m.
- the module comprises a junction box electrically connected to the photovoltaic structures for connecting the photovoltaic structures to an electrical source.
- the module may comprise an adhesive or one or more double-sided adhesive tapes on its lower surface intended to come into contact with the support.
- the adhesive or tape can be arranged on the periphery of the lower surface of the module, in particular on certain areas only or on the entire periphery of the latter.
- the invention also relates to a method of manufacturing the module as described previously comprising: the determination of the difference in dimension between the module when it is flat and the same module affixed to a surface having a radius of curvature corresponding to a radius of predetermined maximum curvature, the cutting in the thickness of the multilayer stack of the slot(s) so that the cumulative width of the slots in at least one direction is greater than or equal to the difference in dimension determined.
- the method may include filling the slot or slots with a filling material, in particular based on a polymer.
- the method may include laminating the top, encapsulating, and bottom layers together.
- the process may include the magnetization of the lower layer of the module after the lamination of the different layers together.
- the method may include adding an adhesive or one or more adhesive tapes to the bottom surface of the module.
- the invention also relates to a method of using a photovoltaic module as described above comprising the deformation of the module to conform to a surface, in particular a curved surface, with a radius of curvature greater than or equal to 500 mm, better greater than or equal to 1 m.
- the surface can be the roof of a vehicle or a building, in particular a magnetic surface.
- the method may include the magnetization of the module by its lower layer on the surface, the surface being magnetic.
- the process may include bonding the bottom surface of the module to the surface using adhesive or double-sided adhesive tapes.
- the surface on which the module is positioned has a radius of curvature greater than or equal to 500 mm, better still greater than or equal to 1 m.
- the method may include positioning the module so that the direction of the module having the smallest radius of curvature is parallel to the direction of the module intercepting the greatest number of slots, in particular perpendicular to the direction of extension of the slots.
- FIG 1 schematically represents an example of a photovoltaic module
- FIG 2 is a sectional view along II-II of the photovoltaic module example of Figure 1,
- FIG 3 is a sectional view along III-III of the photovoltaic module example of Figure 1
- FIG 4 is a sectional view along IV-IV of the photovoltaic module example of Figure 1
- FIG 5 is an enlargement of detail V in figure 1,
- FIG 6 schematically represents a variant of photovoltaic module
- FIG 7 schematically represents a variant of photovoltaic module
- FIG 8 schematically represents a variant of photovoltaic module
- FIG 9 schematically represents a variant of photovoltaic module
- Fig 10 is a sectional view of a photo voltaic module variant.
- a photovoltaic module 10 comprising a multilayer stack formed by at least one transparent upper layer 20 and a lower layer 25 defining the opposite surfaces of the module 10 having photovoltaic structures s 30 in a layer of encapsulation 22, as can be seen in FIG. 2.
- the surfaces of the module have a rectangular outline.
- the module 10 comprises between 2 and 60 photovoltaic structures 30.
- the upper layer 20 and the lower layer 25 are made of a flexible material, in particular the upper layer 20 is made of ETFE or PET and the lower layer 25 is for example made of nitrile rubber containing magnetized ferrites.
- the upper layer 20 and the lower layer 25 have respective thicknesses 5 and z of between 10 ⁇ m and 1 mm for the thickness 5 and between 500 ⁇ m and 10 mm for the thickness z, in particular substantially equal to 500 ⁇ m.
- the lower layer 25 can be transparent or opaque.
- the encapsulation layer 22 can be formed during manufacture by laminating together two sub-layers arranged on either side of the photovoltaic structures 30.
- the encapsulation layer 22 is made of a flexible material, in particular a thermoplastic polymer material such as TPO.
- the encapsulation layer 22 has a thickness e of between 200 and 1000 ⁇ m, for example substantially equal to 400 ⁇ m.
- the encapsulation layer 22 is preferably in direct contact with the upper 20 and lower 25 layers.
- the magnetized ferrites of the lower layer 25 have a Curie temperature higher than the temperature reached by the lower layer 25 during the module manufacturing process, in particular during the lamination of the layers together.
- the ferrites of the lower layer 25 are magnetized after the step of laminating the layers together, the Curie temperature of the ferrites can then be lower than the maximum temperature of the lower layer 25 reached during the lamination of the layers together. .
- the photovoltaic structures 30 comprise a single row of photovoltaic cells 32 electrically connected together in series by flexible conductive elements 35, in particular conductive wires or strips. Each row can comprise one or more cells 35, preferably between 2 and 80 cells 35. Preferably, the photovoltaic structures 30 are parallel to each other and extend longitudinally over part of the length of the module.
- the cells 35 of the row are spaced apart by a distance c, measured between the nearest edges of the adjacent cells, of between ⁇ 2 mm and 200 mm, for example substantially equal to 3 mm.
- all the cells 35 are of the same substantially square shape when viewed from above and of the same thickness. They each extend in top view over an area less than or equal to 246 cm 2 , in particular between 243 cm 2 and 245 cm 2 , for example substantially equal to 244 cm 2 . They are lined up in row. However, it could be otherwise, the cells could be connected in parallel, be of different shapes and/or dimensions between them and/or not be aligned. The cells could for example be rectangular.
- the adjacent photovoltaic structures 30 are spaced apart by a distance d, measured between the closest edges of the cells, of between 1 mm and 50 mm, in particular substantially equal to 10 mm.
- the photovoltaic structures 30 are spaced from each other laterally and are separated by a slot 40 in the thickness of the module.
- the slot 40 crosses all of the layers 20, 22 and 25 mentioned above over a length / less than the dimension of the module in the direction of longitudinal extension of the slot, here the length D of the module.
- the adjacent photovoltaic structures 30 are interconnected, in particular in series, by flexible conductive elements 37, in particular conductive wires or strips, connecting together the adjacent end cells of the adjacent photovoltaic structures, the conductive elements 37 pass through the layer encapsulation 22 at the end of slot 40.
- the slots 40 extend into the space between adjacent photovoltaic structures 30 along the length of the module 10 parallel to the photovoltaic structures 30. Preferably, as shown, the slots 40 extend the full length of the photovoltaic structures 30 In the example illustrated, the slots 40 are open at one end 42 towards the outside and are closed at the other end 45. The successive slots 40 along a direction perpendicular to the direction of longitudinal extension of the slots alternately opens outwards on the opposite edges of the module 10.
- the module 10 forms a continuous circuit of material which winds between the slots and in which a continuous electric circuit is formed by the series connection of the cells 32 electrically connected by the conductive elements 35 and 37.
- the slots 40 may extend over a length f greater than or equal to 95% of the length D of the module.
- the slot 40 is as long as possible while maintaining a mechanical strength of the module, an electrical interconnection of the photovoltaic structures and sufficient electrical insulation between the adjacent cells according to the IEC 61215 and 61730 standards.
- the strip of material at the closed end 45 of the slot may have a dimension m measured between the closed end 45 of the slot and the opposite edge of the module greater than or equal to 5 mm.
- the slots 40 have a decreasing width from their open end 42 to their closed end 45 and the closed end is widened by an opening of substantially circular or oval outline.
- Such a structure allows better conformability to a curved surface.
- the widened end makes it possible to reduce the mechanical stresses at the end of the slot due to the bringing together of the different parts of the module. This avoids deformation or lifting of the module but also makes it more difficult for a crack to propagate at the closed end 45.
- the greatest width t of the slot 40 at the opening to the outside can be between 1 mm and 49 mm, for example substantially equal to 5 mm.
- the greatest width t is defined so as to maintain the necessary electrical insulation distances of the IEC 61215 and 61730 standards between the cells 32.
- the opposite longitudinal edges of the slot can form between them an angle a less than or equal to 15°, better still less than or equal to 10°, and/or less than or equal to 1°.
- the widened end 45 of the slot may have a width u substantially equal to the greatest width t of the slot 40.
- the invention is not limited to this shape of slot, any other shape of slot is envisaged, in particular a slot of rectangular contour, rounded or not at its end, or a slot of variable width over only part of the length of the slot.
- the slots 40 are made by cutting the module after stacking and assembling the different layers
- connection circuit extends from a negative terminal 60 to a positive terminal 62 which are connected to a junction box or electronic circuit associated with the module, not shown, which can be adjacent to the module or remote from the module.
- the junction box is used to electrically connect module 10 to the outside.
- the module 10 When in use, the module 10 is positioned on a surface. Depending on the curvature of the surface, the photovoltaic structures 30 will be able to approach more or less thanks to the slots 40, which makes it possible to bend the module along the median axis X on a curved surface with a small radius of curvature.
- the radius of curvature is greater than or equal to 500 mm, better still greater than or equal to 1 m.
- the module also has some flexibility in length due to the space between the cells of the photovoltaic structures.
- the module is positioned on the surface so that the direction of greatest curvature of the surface is parallel to the direction of greatest curvature of the module, in particular the transverse median axis X.
- the surface may be curved and has a maximum radius of curvature greater than or equal to 500 mm, better 1 m.
- the lower layer 25 is magnetized due to the presence of the magnetized ferrites facilitates its integration on a ferromagnetic surface, in particular sheet metal or steel, such as the roof of a car or a roof of a steel deck building.
- FIGS 6 to 9 illustrate variant embodiments of module 10.
- the embodiment of Figure 6 differs from the embodiment of Figures 1 to 5 in that the photovoltaic structures 30 and the slots 40 extend in the width k of the module 10.
- the embodiment of FIG. 7 differs from the embodiment of FIGS. 1 to 5 in the shape of the slots 40.
- the slots 40 are all identical and have two closed ends 45 and 47 of the same shape as that described previously.
- the slots 40 can be of decreasing width from the center of the slot towards the ends 45 and 47.
- the photovoltaic structures 30 are connected in series by passing conductive elements connecting them alternately in the strip of material on one side or the other. slits.
- the photovoltaic structures 30 can be connected in parallel by passing conductive elements connecting them in the strips of material on both sides of the slots 40.
- the embodiments of Figures 8 and 9 differ from the embodiment of Figures 1 to 5 in that the module 10 comprises two sub-modules 10a and 10b juxtaposed along the length of the module 10, the photovoltaic structures 30 of the two sub-modules s also extending in the length of the module 10.
- the two sub-modules 10a and 10b are symmetrical with respect to each other relative to a median axis of the transverse module X and are electrically connected in parallel with respect to each other. the other.
- the photovoltaic structures 30a and 30b of the sub-modules 10a and 10b have photovoltaic cells 35 electrically connected together in series by conductive elements arranged in two longitudinal rows.
- the photovoltaic structures 30a and 30b of each sub-module 10a and 10b are separated from each other by the slots 40a and 40b respectively.
- the slots 40a of the sub-module 10a are closed at one end 45 close to the central axis X and open towards the exterior on the edge of the opposite sub-module 10a relative to the central axis X.
- the slots 40b of the sub-module -module 10b are closed at one end 45 close to the central axis X and open outwards on the edge of the opposite sub-module 10b relative to the central axis X.
- the photovoltaic structures 30a of the sub-module 10a connected electrically between them at the level of the central part of the module. The same is true for the photovoltaic structures 30b of the sub-module 10a.
- the two sub-modules 10a and 10b can be electrically connected together in parallel, as illustrated in figure 8, or be connected together in series, as illustrated in figure 9.
- the embodiment of FIG. 10 differs from the embodiment of FIGS. 1 to 5 in the structure of the lower layer 25.
- the lower layer 25 is multi-layered and comprises a sub-layer 70 having the previously mentioned structure, i.e. being for example nitrile rubber containing magnetized ferrites, and a ferromagnetic plate 72.
- the ferromagnetic plate 72 may be encapsulated in an underlayer of encapsulant 74 as shown. Alternatively, it is attached to the underlayer 70 by an adhesive or encapsulated in the encapsulation layer 22.
- the module 10 can also have an adhesive or an adhesive tape 80 on its underside intended to come into contact with the surface to be covered, as can be seen in Fig. 10, adhesive or tape 80 may be positioned on the periphery of the lower face.
- the module can have any other shape, depending on the surface to be covered.
- the slots can take other shapes than those described. They may not all be parallel to each other and/or of different shapes.
- the photovoltaic structures can have more than two rows. Adjacent photovoltaic structures can be tilted relative to each other. The cells of a row can be staggered.
- the slots can be filled with an elastic material.
Landscapes
- Photovoltaic Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2109356A FR3126810B1 (fr) | 2021-09-07 | 2021-09-07 | Module photovoltaïque flexible |
| PCT/EP2022/074182 WO2023036663A1 (fr) | 2021-09-07 | 2022-08-31 | Module photovoltaïque flexible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4399748A1 true EP4399748A1 (fr) | 2024-07-17 |
Family
ID=78827919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22769733.1A Pending EP4399748A1 (fr) | 2021-09-07 | 2022-08-31 | Module photovoltaïque flexible |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4399748A1 (fr) |
| FR (1) | FR3126810B1 (fr) |
| WO (1) | WO2023036663A1 (fr) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4860509A (en) * | 1987-05-18 | 1989-08-29 | Laaly Heshmat O | Photovoltaic cells in combination with single ply roofing membranes |
| DE10356690B4 (de) * | 2003-07-05 | 2008-07-03 | Pvflex Solar Gmbh | Flexibles Solarmodul zur Dachintegration mit kristallinen Siliziumzellen |
| JP5300538B2 (ja) * | 2009-03-13 | 2013-09-25 | 三洋電機株式会社 | 太陽電池モジュール |
| US20160126380A1 (en) | 2014-10-30 | 2016-05-05 | Sung Un CHANG | Flexible solar panel and method of fabricating the same |
| KR20160050659A (ko) | 2014-10-30 | 2016-05-11 | 장성은 | 플렉시블 태양광 발전 판넬 제조 방법 및 이를 이용한 조립식 태양광 발전 장치 |
| KR101775977B1 (ko) | 2016-03-30 | 2017-09-20 | (재)한국나노기술원 | 플렉시블 태양전지 모듈의 제조방법 및 그에 의해 제조된 플렉시블 태양전지 모듈 |
| CN106299002B (zh) | 2016-09-14 | 2017-07-14 | 中国电子科技集团公司第四十八研究所 | 柔性太阳电池组件及其制备方法和应用 |
| US20190312164A1 (en) * | 2016-12-15 | 2019-10-10 | Panasonic Intellectual Property Management Co., Ltd. | Solar cell module |
| KR102407847B1 (ko) | 2018-12-03 | 2022-06-10 | 박은주 | 플랙시블 솔라 패널의 제조방법 및 그에 따라 제조된 플랙시블 솔라 패널 |
| CN109920878B (zh) | 2019-02-28 | 2021-05-07 | 苏州携创新能源科技有限公司 | 一种柔性光伏组件制造方法 |
-
2021
- 2021-09-07 FR FR2109356A patent/FR3126810B1/fr active Active
-
2022
- 2022-08-31 WO PCT/EP2022/074182 patent/WO2023036663A1/fr not_active Ceased
- 2022-08-31 EP EP22769733.1A patent/EP4399748A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3126810B1 (fr) | 2025-04-04 |
| WO2023036663A1 (fr) | 2023-03-16 |
| FR3126810A1 (fr) | 2023-03-10 |
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