CN117117034A - Novel light impact-resistant photovoltaic module and manufacturing method thereof - Google Patents
Novel light impact-resistant photovoltaic module and manufacturing method thereof Download PDFInfo
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- CN117117034A CN117117034A CN202311069045.XA CN202311069045A CN117117034A CN 117117034 A CN117117034 A CN 117117034A CN 202311069045 A CN202311069045 A CN 202311069045A CN 117117034 A CN117117034 A CN 117117034A
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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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- 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
- 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
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/186—Particular post-treatment for the devices, e.g. annealing, impurity gettering, short-circuit elimination, recrystallisation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
Abstract
The embodiment of the application provides a novel light impact-resistant photovoltaic module and a manufacturing method thereof, belonging to the technical field of photovoltaics, and comprising the following steps: providing a photovoltaic backsheet; forming a first supporting layer on one side of the photovoltaic backboard, wherein the first supporting layer is connected with the photovoltaic backboard through a first adhesive film layer; forming a battery string on one side of the first support layer away from the photovoltaic backboard; forming a second support layer on one side of the battery string away from the first support layer; forming a light-transmitting waterproof layer on one side of the second supporting layer, which is away from the battery string, wherein the second supporting layer is connected with the light-transmitting waterproof layer through a second adhesive film layer so as to form a laminated paving piece; the first support layer and the second support layer are made of glass fiber prepreg, and are in direct contact with the battery string; the laminate lay-up is heated and pressed by the laminating apparatus to form a laminate. By the manufacturing method of the photovoltaic module, the impact resistance of the photovoltaic module can be improved, so that the battery performance is protected, and the service life of the battery is prolonged.
Description
Technical Field
The embodiment of the application relates to the technical field of photovoltaics, in particular to a novel light impact-resistant photovoltaic module and a manufacturing method thereof.
Background
The photovoltaic module generally comprises a photovoltaic cell, ultra-white glass, a packaging adhesive film, a packaging backboard and an aluminum alloy frame, but the ultra-white glass has the limitations, the density is higher, and the quality of the manufactured photovoltaic module is higher. For the existing stock commercial roofs, the load is low, so that the application of the photovoltaic module with the single glass structure is not less challenged, and meanwhile, the single module has high quality, so that various inconveniences are brought to constructors.
Therefore, the weight reduction of the photovoltaic module is an urgent task, and if the front plate glass is thinned or even replaced by other light polymer materials, the problem can be solved undoubtedly, but the mechanical performance, especially the impact resistance, of the module is reduced, and if the surface of the module is impacted by a hard object in hail weather or strong wind weather, the module is easily damaged, so that the battery is disabled, and the service life of the module is influenced.
Disclosure of Invention
The embodiment of the application provides a novel light impact-resistant photovoltaic module and a manufacturing method thereof, aiming at solving the problem of low impact resistance of the photovoltaic module.
The first aspect of the embodiment of the application provides a manufacturing method of a novel light impact-resistant photovoltaic module, which comprises the following steps:
providing a photovoltaic backsheet;
forming a first supporting layer on one side of the photovoltaic backboard, wherein the first supporting layer is connected with the photovoltaic backboard through a first adhesive film layer;
forming a battery string on one side of the first support layer away from the photovoltaic backboard;
forming a second support layer on one side of the battery string away from the first support layer;
forming a light-transmitting waterproof layer on one side of the second supporting layer, which is away from the battery string, wherein the second supporting layer is connected with the light-transmitting waterproof layer through a second adhesive film layer so as to form a laminated paving piece;
wherein the materials of the first support layer and the second support layer comprise glass fiber prepreg, and the first support layer and the second support layer are directly contacted with the battery string;
the laminate lay-up is heated and pressed by a laminating apparatus to form a laminate.
Optionally, the battery string comprises a plurality of battery pieces, and the plurality of battery pieces are connected by welding belts;
the battery sheet includes: PERC single sided battery, TOPCON single sided battery, PERC double sided battery, TOPCON double sided battery, and HIT battery.
Optionally, the light-transmitting waterproof layer comprises a fluorine-containing high polymer material layer or a composite material layer;
wherein the fluorine-containing high polymer material layer is compounded by any one of a plurality of layers in ETFE, ECTFE, PVDF, PVF, PCTFE or by any of a plurality of layers in ETFE, ECTFE, PVDF, PVF, PCTFE;
the composite material layer is formed by compounding the fluorine-containing high polymer material layer and a thermoplastic high polymer material, and the thermoplastic high polymer material layer is any one of PET, PETG, PC, PCTG.
Optionally, the fluorine-containing polymer material layer and the thermoplastic polymer material layer are formed through one-time coextrusion or bonding through structural adhesive.
Optionally, the thickness of the light-transmitting waterproof layer is 200 μm or more and 500 μm or less.
Optionally, the materials of the first adhesive film layer include: EVA, POE, EPE.
Optionally, the thickness of the first adhesive film layer is greater than or equal to 0.2mm and less than or equal to 0.6mm.
Optionally, the second adhesive film layer includes a transparent EVA adhesive film layer, a transparent POE adhesive film layer, or a co-extruded EPE adhesive film layer.
Optionally, the thickness of the second adhesive film layer is greater than or equal to 0.2mm and less than or equal to 0.6mm.
Optionally, the photovoltaic backsheet includes: TPE type back sheet, TPT type back sheet, KPC type back sheet, FFC type back sheet, CPC type back sheet or co-extruded back sheet.
Optionally, the thickness of the photovoltaic back sheet is 0.2mm or more and 0.5mm or less.
The second aspect of the embodiment of the application provides a novel light-weight impact-resistant photovoltaic module, which comprises the novel light-weight impact-resistant photovoltaic module manufactured by the manufacturing method of the novel light-weight impact-resistant photovoltaic module provided by the first aspect of the embodiment of the application.
The beneficial effects are that:
the application provides a novel light impact-resistant photovoltaic module and a manufacturing method thereof, wherein a first supporting layer is formed on one side of a photovoltaic backboard, and the first supporting layer is connected with the photovoltaic backboard through a first adhesive film layer; then forming a battery string on one side of the first supporting layer, which is away from the photovoltaic backboard, and forming a second supporting layer on one side of the battery string, which is away from the first supporting layer; forming a light-transmitting waterproof layer on one side of the second supporting layer, which is far away from the battery string, so that the second supporting layer is connected with the light-transmitting waterproof layer through a second adhesive film layer to form a laminated paving piece; the first support layer and the second support layer are made of glass fiber prepreg, and are directly contacted with the battery string; finally, the laminate lay-up is heated and pressed by a lamination apparatus to form a laminate. Therefore, after the first supporting layer and the second supporting layer are directly contacted with the battery string, the lamination equipment is utilized to enable the first supporting layer and the second supporting layer to be changed from a liquid state into a solid state under the condition of heating and pressurizing, and the battery string is wrapped up, so that the impact resistance of the photovoltaic module can be improved by utilizing the solid first supporting layer and the solid second supporting layer, the battery performance is protected, and the service life of the battery is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart illustrating steps of a method for manufacturing a novel lightweight and impact-resistant photovoltaic module according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a novel lightweight and impact-resistant photovoltaic module according to an embodiment of the present application.
Reference numerals illustrate:
1. a light-transmitting water-blocking layer; 2. a second adhesive film layer; 3. a second support layer; 4. a battery string; 5. a first support layer; 6. a first adhesive film layer; and 7, a photovoltaic backboard.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
Fig. 1 shows a step flow diagram of a method for manufacturing a novel lightweight impact-resistant photovoltaic module. Referring to fig. 1, an embodiment of the application discloses a manufacturing method of a novel light-weight impact-resistant photovoltaic module, which comprises the following steps:
step S01: a photovoltaic backsheet 7 is provided.
Specifically, the photovoltaic backboard 7 is used for packaging the back of the photovoltaic module, and plays roles of water resistance, weather resistance and insulation. The photovoltaic backsheet 7 may comprise a TPE (PVF/PET/PE) type backsheet, a TPT (PVF/PET/PVF) type backsheet, a TPC (PVF/PET/fluorine-containing coating), a KPC (PVDF/PET/fluorine-containing coating) type backsheet, a CPC type backsheet or a co-extruded backsheet.
Wherein the thickness of the photovoltaic back sheet 7 is 0.2mm or more and 0.7mm or less. Illustratively, the thickness of the photovoltaic backsheet 7 may be 0.2mm, 0.3mm, 0.35mm, 0.4mm, 0.5mm, 0.7mm, and so forth. Also, the photovoltaic backsheet 7 may be white, black or transparent in color.
Step S02: a first supporting layer 5 is formed on one side of the photovoltaic backboard 7, and the first supporting layer 5 is connected with the photovoltaic backboard 7 through a first adhesive film layer 6.
Specifically, the first adhesive film layer 6 may include a transparent EVA (ethylene-vinyl acetate copolymer) adhesive film layer, an ultraviolet cut EVA adhesive film layer, a white EVA adhesive film layer, a transparent POE (polyolefin elastomer) adhesive film layer, a white POE adhesive film layer, or a co-extruded EPE (EVA/POE/EVA) adhesive film layer. The first adhesive film layer 6 is used for bonding the photovoltaic backboard 7 and the first support layer 5, wherein the transparent adhesive film layer can transmit sunlight.
Further, the thickness of the first adhesive film thick layer 6 is 0.2mm or more and 0.6mm or less. Illustratively, the thickness of the first adhesive film layer 6 may be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, etc.
In addition, the material of the first support layer 5 includes a glass fiber prepreg, which is formed by compounding glass fiber cloth and resin, wherein the resin can be one or a mixture of several of acrylic resin, unsaturated polyester resin, polyurethane resin, epoxy resin and epoxy vinyl ester resin.
Further, in practical application, in order to improve the weather resistance and flame retardance of the glass fiber prepreg, an ultraviolet absorber and a flame retardant can be added into a resin formula so as to ensure the reliability of the composite material in outdoor long-term use.
The glass fiber cloth and resin can be compounded in the following way: the method comprises the steps of taking glass fiber cloth as a matrix, pulling the glass fiber cloth at the speed of 0.5-2 m/s by means of impregnating liquid resin, pressing a solid resin adhesive film or spraying solid powder, ensuring that the resin is fully contacted with the glass fiber, then controlling the resin content by using a scraper or a metering roller, removing redundant resin, compounding the glass fiber cloth and the resin together, heating the compounded glass fiber cloth and the resin through a high-temperature oven at 60-130 ℃, applying release films or release papers on two sides of the compounded glass fiber cloth and the resin, rolling to obtain glass fiber prepreg, and finally cutting into required sizes for standby according to the size of a photovoltaic module.
Further, the glass fiber cloth may have a grammage in the range of 30 g/square meter to 800 g/square meter, and for example, the glass fiber cloth may have a grammage in the range of: 30 g/square meter, 50 g/square meter, 100 g/square meter, 200 g/square meter, 400 g/square meter, 600 g/square meter, etc. Also, the glass fiber cloth may be in a plain, twill, or satin shape, or the like.
Wherein, the weight ratio of the glass fiber cloth to the resin is more than or equal to 10:50 parts, and 50 or less: 10 parts, illustratively, the weight ratio of fiberglass cloth to resin may be 10:30 parts, 10:20 parts, 10:10 parts, 30:20 parts, 13:7 parts, 20:10 parts, and the like.
Step S03: a string of cells 4 is formed on the side of the first support layer 5 facing away from the photovoltaic backsheet 7.
Specifically, the battery string 4 includes a plurality of battery pieces, and a plurality of the battery pieces are connected by a solder tape.
Wherein, the battery piece includes: a PERC (emitter passivated and back contact battery) single-sided battery, a TOPCON (tunnel oxidized passivated battery) single-sided battery, a PERC double-sided battery, a TOPCON double-sided battery, or a HIT (heterojunction battery) battery, the double-sided battery sheet can realize double-sided power generation.
Further, in the embodiment of the present application, the first support layer 5 is in direct contact with the battery string 4, that is, no other film layer, such as a glue film layer, is provided between the first support layer 5 and the battery string 4, and after the first support layer 5 and the battery string 4 are laminated by the laminating device, the resin material contained in the first support layer 5 is directly adhered to the battery string 4; therefore, the adhesive film layer between the first supporting layer 5 and the battery string 4 can be omitted, so that the manufacturing steps of the whole photovoltaic module are reduced, the manufacturing cost is saved, and the manufacturing efficiency is improved.
Step S04: a second support layer 3 is formed on the side of the battery string 4 facing away from the first support layer 5.
Specifically, the material of the second support layer 3 includes glass fiber prepreg, and the glass fiber prepreg is formed by compounding glass fiber cloth and resin, wherein the resin can be one or a mixture of several of acrylic resin, unsaturated polyester resin, polyurethane resin, epoxy resin and epoxy vinyl ester resin.
Further, in practical application, in order to improve the weather resistance and flame retardance of the glass fiber prepreg, an ultraviolet absorber and a flame retardant can be added into a resin formula so as to ensure the reliability of the composite material in outdoor long-term use.
The glass fiber cloth and resin can be compounded in the following way: the method comprises the steps of taking glass fiber cloth as a matrix, pulling the glass fiber cloth at the speed of 0.5-2 m/s by means of impregnating liquid resin, pressing a solid resin adhesive film or spraying solid powder, ensuring that the resin is fully contacted with the glass fiber, then controlling the resin content by using a scraper or a metering roller, removing redundant resin, compounding the glass fiber cloth and the resin together, heating the compounded glass fiber cloth and the resin through a high-temperature oven at 60-130 ℃, applying release films or release papers on two sides of the compounded glass fiber cloth and the resin, rolling to obtain glass fiber prepreg, and finally cutting into required sizes for standby according to the size of a photovoltaic module.
Further, the glass fiber cloth may have a grammage in the range of 30 g/square meter to 400 g/square meter, and for example, the glass fiber cloth may have a grammage in the range of: 30 g/square meter, 50 g/square meter, 100 g/square meter, 200 g/square meter, 250 g/square meter, 260 g/square meter, 300 g/square meter, etc., and the glass fiber cloth may be in the shape of plain weave, twill weave, satin weave, etc.
Wherein, the weight ratio of the glass fiber cloth to the resin is more than or equal to 10:50 parts, and 50 or less: 10 parts, illustratively, the weight ratio of fiberglass cloth to resin may be 10:30 parts, 10:20 parts, 10:10 parts, 11:9 parts, 30:20 parts, and the like.
Further, in the embodiment of the present application, the second support layer 3 is in direct contact with the battery string 4, that is, no other film layer, such as a glue film layer, is provided between the second support layer 3 and the battery string 4, and after the connection between the second support layer 3 and the battery string 4 is laminated by the laminating device, the resin material contained in the second support layer 3 is directly bonded with the battery string 4; therefore, the adhesive film layer between the second supporting layer 3 and the battery string 4 can be omitted, so that the manufacturing steps of the whole photovoltaic module are reduced, the manufacturing cost is saved, and the manufacturing efficiency is improved.
S05: and a light-transmitting waterproof layer 1 is formed on one side, away from the battery string 4, of the second support layer 3, and the second support layer 3 is connected with the light-transmitting waterproof layer 1 through a second adhesive film layer 2 so as to form a laminated paving piece.
Specifically, the second adhesive film layer 2 may include a transparent EVA adhesive film layer, a transparent POE adhesive film layer, or a co-extruded EPE adhesive film layer. The second adhesive film layer 2 is used for bonding the second supporting layer 3 and the light-transmitting waterproof layer 1, wherein the transparent adhesive film layer can transmit sunlight.
Further, the thickness of the second adhesive film thick layer is more than or equal to 0.2mm and less than or equal to 0.6mm. Illustratively, the thickness of the second adhesive film layer 2 may be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.55mm, 0.6mm, etc.
In addition, the light-transmitting waterproof layer 1 is a fluorine-containing high polymer material layer or a composite material layer.
Specifically, the fluorine-containing polymer material layer is compounded by any one of ETFE (ethylene-tetrafluoroethylene copolymer), ECTFE (ethylene chlorotrifluoroethylene copolymer), PVDF (polyvinylidene fluoride), PVF (polyvinyl fluoride), PCTFE (polytrifluoroethylene), or by any plurality of layers in ETFE, ECTFE, PVDF, PVF, PCTFE;
the composite material layer is formed by compounding a fluorine-containing polymer material layer and a thermoplastic polymer material, wherein the thermoplastic polymer material layer is any one of PET (polyethylene terephthalate), PETG (polyethylene terephthalate-1, 4-cyclohexanedimethanol ester), PC (polycarbonate) and PCTG (composite material formed by polyethylene terephthalate-1, 4-cyclohexanedimethanol ester and polycarbonate), and the fluorine-containing polymer material layer and the thermoplastic polymer material can be formed by one-time coextrusion or adhesive bonding through EVA or acrylic acid structure.
Further, the light-transmitting water-blocking layer 1 has a thickness of 200 μm or more and 500 μm or less.
Step S06: the laminate lay-up is heated and pressed by a laminating apparatus to form a laminate.
Specifically, the step of laminating the laminate lay-up by the laminating apparatus comprises:
step S061: heating the laminating apparatus to a first temperature in advance; the laminate lay-up is placed in a laminating apparatus.
Specifically, the first temperature is 110 ℃ or higher and 150 ℃ or lower, and the heating time at the first temperature is 100 seconds or higher and 1500 seconds or lower.
Step S062: the lamination equipment starts to draw a vacuum.
Specifically, the time for evacuation is 60 seconds or more and 540 seconds or less.
Step S063: after the evacuation is completed, the lamination device applies lamination pressure to the laminate lay-up.
Specifically, the lamination pressure was-10 KPa, and the lamination time was the difference between the heating time at the first temperature and the time of evacuation.
Step S064: after lamination is completed, the lay-up is cooled at a second temperature while cooling pressure is applied to the lay-up.
Specifically, the second temperature is 20 ℃ or higher and 60 ℃ or lower; the cooling pressure is more than or equal to-50 KPa and less than or equal to-30 KPa, and the cooling time is more than or equal to 300 seconds and less than or equal to 900 seconds.
Example two
The embodiment of the application also provides a novel light impact-resistant photovoltaic module, which comprises the novel light impact-resistant photovoltaic module manufactured by the manufacturing method of the novel light impact-resistant photovoltaic module provided by the embodiment I of the application.
The application provides a novel light impact-resistant photovoltaic module and a manufacturing method thereof, wherein a photovoltaic backboard 7 is provided, a first supporting layer 5 is formed on one side of the photovoltaic backboard 7, and the first supporting layer 5 is connected with the photovoltaic backboard 7 through a first adhesive film layer 6; forming a cell string 4 on the side of the first support layer 5 facing away from the photovoltaic backsheet 7, and then forming a second support layer 3 on the side of the cell string 4 facing away from the first support layer 5; a light-transmitting waterproof layer 1 is formed on one side, away from the battery strings 4, of the second supporting layer 3, and the second supporting layer 3 is connected with the light-transmitting waterproof layer 1 through a second adhesive film layer 2 so as to form a laminated paving piece; wherein the materials of the first support layer 5 and the second support layer 3 comprise glass fiber prepreg, and the first support layer 5 and the second support layer 3 are directly contacted with the battery string 4; finally, the laminate lay-up is heated and pressed by a lamination apparatus to form a laminate. In this way, the first supporting layer 5 and the second supporting layer 3 are changed from liquid state to solid state to wrap the battery string 4 under the condition of heating and pressurizing, so that the impact resistance of the photovoltaic module can be improved, the battery performance is protected, and the service life of the battery is prolonged.
The following five embodiments are provided in the examples of the present application, and five different novel lightweight impact-resistant photovoltaic modules are manufactured, and corresponding performance tests are performed, with the following results:
in the first embodiment, the photovoltaic back sheet 7 is a TPC type white back sheet, and the thickness of the photovoltaic back sheet 7 is 0.35mm.
The first adhesive film layer 6 adopts an ultraviolet cut-off EVA adhesive film layer, and the thickness of the first adhesive film layer 6 is 0.3mm.
The first supporting layer 5 is formed by compounding liquid epoxy resin and glass fiber plain cloth with gram weight of 600 g/square meter, and the resin content is 35%.
The battery piece adopts PERC single-sided battery.
The second supporting layer 3 is formed by compounding liquid epoxy resin and glass fiber plain cloth with the gram weight of 200 g/square meter, and the resin content is 40%.
The second adhesive film layer 2 adopts a transparent EVA adhesive film layer, and the thickness of the second adhesive film layer 2 is 0.55mm.
The light-transmitting waterproof layer 1 is formed by bonding an ultraviolet-cut-off ETFE layer in a fluorine-containing high polymer material layer and a PET layer in a thermoplastic high polymer material layer through acrylic structural adhesive, wherein the thickness of the ultraviolet-cut-off ETFE layer is 25 mu m, the thickness of the acrylic structural adhesive is 15 mu m, the thickness of a PET base layer is 300 mu m, and corona treatment is added to the surfaces of two sides of the PET layer so as to increase the bonding force between the PET layer and a transparent EVA adhesive film layer. Compared with the common ETFE layer, the ultraviolet-cut ETFE layer is added with an ultraviolet absorber and an ultraviolet shielding agent on the surface of the material, so that ultraviolet rays can be prevented from entering the interior of the component, and the performance of the material in the component can be protected.
The technological parameters of the lamination equipment lamination layer paving piece are as follows: the lamination temperature was 140 ℃, the evacuation time was 180 seconds, the lamination pressure was-10 KPa, the lamination time was 1200 seconds, the cold pressing temperature was 25 ℃, the cold pressing pressure was-50 KPa, and the cold pressing time was 720 seconds. The resin in the first supporting layer 5 and the second supporting layer 3 is converted from liquid state to solid state at the temperature of 140 ℃ to wrap the battery piece, and the structures of the outer layers are bonded into a whole through the first adhesive film layer 6 and the second adhesive film layer 2, so that the anti-impact photovoltaic module is manufactured.
In the second embodiment, the photovoltaic back sheet 7 is a CPC type transparent back sheet, and the thickness of the photovoltaic back sheet 7 is 0.35mm.
The first adhesive film layer 6 adopts transparent POE adhesive film, and the thickness of the first adhesive film layer 6 is 0.5mm.
The first supporting layer 5 is formed by compounding liquid epoxy resin and glass fiber plain cloth with the gram weight of 400 g/square meter, and the resin content is 35%.
The battery piece adopts a HIT double-sided power generation battery.
The second supporting layer 3 is formed by compounding solid epoxy vinyl ester resin and glass fiber plain cloth with the gram weight of 250 g/square meter, and the resin content is 45%.
The second adhesive film layer 2 adopts a transparent POE adhesive film layer, and the thickness of the second adhesive film is 0.5mm.
The light-transmitting water-blocking layer 1 is formed by adhering an ultraviolet-blocking PVF layer in a fluorine-containing high polymer material layer and a PET layer in a thermoplastic high polymer material layer through acrylic acid structure adhesive, wherein the thickness of the ultraviolet-blocking PVF layer is 30 mu m, the thickness of the acrylic acid structure adhesive is 15 mu m, the thickness of the PET layer is 350 mu m, and the surface of the PET layer is subjected to frosting treatment so as to increase the adhesion between the PET layer and a transparent POE adhesive film layer.
The technological parameters of the lamination equipment lamination layer paving piece are as follows: the lamination temperature was 145 ℃, the evacuation time was 240 seconds, the lamination pressure was-10 KPa, the lamination time was 960 seconds, the cold pressing temperature was 30 ℃, the cold pressing pressure was-30 KPa, and the cold pressing time was 360 seconds. The resin in the first supporting layer 5 and the second supporting layer 3 is converted from liquid state to solid state at 145 ℃ to wrap the battery piece, and the structures of the layers on the outer side are bonded into a whole through the first adhesive film layer 6 and the second adhesive film layer 2, so that the anti-impact double-sided power generation photovoltaic module is manufactured, and the gain of the photovoltaic module is 15% compared with that of the single-sided power generation photovoltaic module.
In the third embodiment, the photovoltaic back sheet 7 is a TPE type white back sheet, and the thickness of the photovoltaic back sheet 7 is 0.7mm.
The first adhesive film layer 6 adopts a white EVA adhesive film layer, and the thickness of the first adhesive film layer 6 is 0.3mm.
The first supporting layer 5 is formed by compounding acrylic resin powder and glass fiber plain cloth with gram weight of 200 g/square meter, and the resin content is 50%.
The battery piece adopts PERC single-sided power generation battery.
The second supporting layer 3 is formed by compounding acrylic resin powder and glass fiber plain cloth with gram weight of 200 g/square meter, and the resin content is 55%.
The second adhesive film layer 2 adopts a transparent EVA adhesive film layer, and the thickness of the second adhesive film layer 2 is 0.5mm.
The light-transmitting waterproof layer 1 is formed by adhering an ultraviolet-cut-off ETFE layer in a fluorine-containing high polymer material layer and a PET layer in a thermoplastic high polymer material layer through acrylic acid structural adhesive, wherein the thickness of the ultraviolet-cut-off ETFE layer is 25 mu m, the thickness of the acrylic acid structural adhesive is 10 mu m, the thickness of the PET layer is 300 mu m, and the surface of the PET layer is subjected to corona treatment so as to increase the adhesive force between the PET layer and the transparent EVA adhesive film layer and the acrylic acid structural adhesive.
The technological parameters of the lamination equipment lamination layer paving piece are as follows: the lamination temperature was 150 ℃, the evacuation time was 360 seconds, the lamination pressure was-10 KPa, the lamination time was 780 seconds, the cold pressing temperature was 25 ℃, the cold pressing pressure was-50 KPa, and the cold pressing time was 600 seconds. The resin in the first supporting layer 5 and the second supporting layer 3 is converted from liquid state to solid state at 150 ℃ to wrap the battery piece, and the structures of the outer layers are bonded into a whole through the first adhesive film layer 6 and the second adhesive film layer 2, so that the anti-impact photovoltaic module is manufactured.
In the fourth embodiment, the photovoltaic back sheet 7 is a TPE type white back sheet, and the thickness of the photovoltaic back sheet 7 is 0.7mm.
The first adhesive film layer 6 adopts a white EVA adhesive film layer, and the thickness of the first adhesive film layer 6 is 0.3mm.
The first supporting layer 5 is formed by compounding acrylic resin powder and glass fiber plain cloth with gram weight of 200 g/square meter, and the resin content is 50%.
The battery piece adopts PERC single-sided power generation battery.
The second supporting layer 3 is formed by compounding acrylic resin powder and glass fiber plain cloth with gram weight of 200 g/square meter, and the resin content is 55%.
The second adhesive film layer 2 adopts a transparent EVA adhesive film layer, and the thickness of the second adhesive film layer 2 is 0.5mm.
The light-transmitting waterproof layer 1 is formed by adhering an ultraviolet-cutting PVDF layer in a fluorine-containing high polymer material layer and a PET layer in a thermoplastic high polymer material layer through acrylic acid structural adhesive, wherein the PET layer is coated with a fluorine-containing coating layer away from the ultraviolet-cutting PVDF layer, the thickness of the ultraviolet-cutting PVDF layer is 20 mu m, the thickness of the acrylic acid structural adhesive is 10 mu m, and the thickness of the PET layer is 275 mu m.
The technological parameters of the lamination equipment lamination layer paving piece are as follows: the lamination temperature was 150 ℃, the evacuation time was 360 seconds, the lamination pressure was-10 KPa, the lamination time was 780 seconds, the cold pressing temperature was 25 ℃, the cold pressing pressure was-50 KPa, and the cold pressing time was 600 seconds. The resin in the first supporting layer 5 and the second supporting layer 3 is converted from liquid state to solid state at 150 ℃ to wrap the battery piece, and the structures of the outer layers are bonded into a whole through the first adhesive film layer 6 and the second adhesive film layer 2, so that the anti-impact photovoltaic module is manufactured.
In the fifth embodiment, the photovoltaic back sheet 7 is a TPE type white back sheet, and the thickness of the photovoltaic back sheet 7 is 0.7mm.
The first adhesive film layer 6 adopts a white EVA adhesive film layer, and the thickness of the first adhesive film layer 6 is 0.3mm.
The first supporting layer 5 is formed by compounding acrylic resin powder and glass fiber plain cloth with gram weight of 200 g/square meter, and the resin content is 50%.
The battery piece adopts PERC single-sided power generation battery.
The second supporting layer 3 is formed by compounding acrylic resin powder and glass fiber plain cloth with gram weight of 200 g/square meter, and the resin content is 55%.
The second adhesive film layer 2 adopts a transparent EVA adhesive film layer, and the thickness of the second adhesive film layer 2 is 0.5mm.
The light-transmitting water-blocking layer 1 is formed by adhering an ultraviolet-blocking PVF layer in a fluorine-containing high polymer material layer and a PET layer in a thermoplastic high polymer material layer through acrylic acid structural adhesive, wherein the PET layer is coated with a fluorine-containing coating layer away from the ultraviolet-blocking PVF layer, the thickness of the ultraviolet-blocking PVF layer is 20 mu m, the thickness of the acrylic acid structural adhesive is 10 mu m, and the thickness of the PET layer is 275 mu m.
The technological parameters of the lamination equipment lamination layer paving piece are as follows: the lamination temperature was 150 ℃, the evacuation time was 360 seconds, the lamination pressure was-10 KPa, the lamination time was 780 seconds, the cold pressing temperature was 25 ℃, the cold pressing pressure was-50 KPa, and the cold pressing time was 600 seconds. The resin in the first supporting layer 5 and the second supporting layer 3 is converted from liquid state to solid state at 150 ℃ to wrap the battery piece, and the structures of the outer layers are bonded into a whole through the first adhesive film layer 6 and the second adhesive film layer 2, so that the anti-impact photovoltaic module is manufactured.
Comparative example:
the application also provides another photovoltaic module and performs performance test, and the photovoltaic module further comprises a third adhesive film layer and a fourth adhesive film layer on the basis of the photovoltaic module prepared by the application.
Specifically, the third adhesive film layer is located between the battery string 4 and the first supporting layer 5, the fourth adhesive film layer is located between the battery string 4 and the second supporting layer 3, and the third adhesive film layer and the fourth adhesive film layer are transparent EVA adhesive film layers.
The battery string adopts a laminated tile battery string, wherein the laminated tile technology is used as a unique battery piece connecting technology, after the photovoltaic cells are cut into pieces, the photovoltaic cells are welded into strings by using special conductive adhesive materials, and each cut battery piece is partially overlapped during assembly, so that gaps in the assembly are fully utilized, the technology replaces welding strips in the traditional technology, the battery pieces are connected in a front-back lamination mode, the connecting force between the battery pieces is improved on the basis of the traditional technology, the reliability of battery connection is ensured, no metal grid lines exist on the surface, no gaps exist between the battery pieces, the usable area of the surface of the assembly is fully utilized, and the line loss of the traditional metal grid lines is reduced, so that the conversion efficiency of the assembly is greatly improved
The photovoltaic back sheet 7, the first adhesive film 6, the first supporting layer 5, the second supporting layer 3, the second adhesive film 2, the light-transmitting waterproof layer 1 and the lamination step are the same as those of the fifth embodiment of the present application.
The results of performance tests of the photovoltaic modules of the above five embodiments and the comparative examples are shown in table 1:
TABLE 1
According to the test results of the above embodiments, in the first to fifth embodiments, the first support layer 5 and the second support layer 3 are in direct contact with the battery string 4, in the comparative example, the third adhesive film layer and the fourth adhesive film layer are further disposed between the first support layer 5 and the second support layer 3 and the battery string 4, respectively, and the test results show that: the maximum power attenuation ratio of the comparative example is larger than that of the first to fifth embodiments. It is understood that the impact resistance of the photovoltaic modules in the first to fifth embodiments is higher than that of the photovoltaic modules in the comparative example.
In a second aspect, the photovoltaic module unit weight in embodiments one to five is greater than the photovoltaic module unit weight in the comparative example. Therefore, the battery string 4 is directly contacted with the first supporting layer 5 and the second supporting layer 3, so that a third adhesive film layer between the first supporting layer 5 and the battery string 4 and a second adhesive film layer between the second supporting layer 3 and the battery string 4 are omitted, the quality of a single photovoltaic module is reduced, and the installation of constructors is facilitated; meanwhile, the manufacturing steps of the whole photovoltaic module are reduced, the manufacturing cost is saved, and the manufacturing efficiency is improved.
In a third aspect, the power of the photovoltaic module in the second embodiment is greater than the power of the photovoltaic module in the other embodiments. Therefore, the battery string 4 is a double-sided power generation battery string, the photovoltaic backboard 7, the first adhesive film layer 6 and the first supporting layer 5 are also made of transparent materials, double-sided power generation of the photovoltaic module can be realized, the impact resistance and reliability of the photovoltaic module are ensured, and meanwhile, the power of the same area is 15% higher than that of a conventional single-sided power generation photovoltaic module, so that the power generation efficiency of the module is effectively improved.
In summary, the application provides a novel light impact-resistant photovoltaic module and a manufacturing method thereof, and provides a photovoltaic backboard, wherein a first supporting layer is formed on one side of the photovoltaic backboard, and the first supporting layer is connected with the photovoltaic backboard through a first adhesive film layer; forming a battery string on one side of the first support layer, which is away from the photovoltaic backboard, and then forming a second support layer on one side of the battery string, which is away from the first support layer; forming a light-transmitting waterproof layer on one side of the second supporting layer, which is away from the battery strings, and connecting the second supporting layer with the light-transmitting waterproof layer through a second adhesive film layer to form a laminated paving piece; the first support layer and the second support layer are made of glass fiber prepreg, and are directly contacted with the battery string; finally, the laminate lay-up is heated and pressed by a lamination apparatus to form a laminate.
Therefore, the first supporting layer and the second supporting layer are changed from liquid state into solid state to wrap the battery string under the condition of heating and pressurizing, and the shock resistance of the photovoltaic module can be improved, so that the battery performance is protected, and the service life of the battery is prolonged.
In addition, the double-sided power generation of the assembly can be realized by adopting the double-sided power generation battery, the transparent first adhesive film layer, the transparent second adhesive film layer, the transparent photovoltaic backboard and the transparent light-transmitting waterproof layer, so that the impact resistance and the reliability of the assembly are ensured, and meanwhile, the power of the same area is about 15 percent higher than that of the conventional single-sided power generation flexible assembly, and the power generation efficiency of the assembly is effectively improved.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
It should also be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Moreover, relational terms such as "first" and "second" may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, or order, and without necessarily being construed as indicating or implying any relative importance. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or terminal device comprising the element.
The foregoing has outlined rather broadly the more detailed description of the application in order that the detailed description of the application that follows may be better understood, and in order that the present contribution to the art may be better appreciated. While various modifications of the embodiments and applications of the application will occur to those skilled in the art, it is not necessary and not intended to be exhaustive of all embodiments, and obvious modifications or variations of the application are within the scope of the application.
Claims (12)
1. The manufacturing method of the novel light impact-resistant photovoltaic module is characterized by comprising the following steps of:
providing a photovoltaic backsheet;
forming a first supporting layer on one side of the photovoltaic backboard, wherein the first supporting layer is connected with the photovoltaic backboard through a first adhesive film layer;
forming a battery string on one side of the first support layer away from the photovoltaic backboard;
forming a second support layer on one side of the battery string away from the first support layer;
forming a light-transmitting waterproof layer on one side of the second supporting layer, which is away from the battery string, wherein the second supporting layer is connected with the light-transmitting waterproof layer through a second adhesive film layer so as to form a laminated paving piece;
wherein the materials of the first support layer and the second support layer comprise glass fiber prepreg, and the first support layer and the second support layer are directly contacted with the battery string;
the laminate lay-up is heated and pressed by a laminating apparatus to form a laminate.
2. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the battery string comprises a plurality of battery pieces, and the battery pieces are connected by welding belts;
the battery sheet includes: PERC single sided battery, TOPCON single sided battery, PERC double sided battery, TOPCON double sided battery, and HIT battery.
3. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the light-transmitting waterproof layer comprises a fluorine-containing high polymer material layer or a composite material layer;
wherein the fluorine-containing high polymer material layer is compounded by any one of a plurality of layers in ETFE, ECTFE, PVDF, PVF, PCTFE or by any of a plurality of layers in ETFE, ECTFE, PVDF, PVF, PCTFE;
the composite material layer is formed by compounding the fluorine-containing high polymer material layer and a thermoplastic high polymer material, and the thermoplastic high polymer material layer is any one of PET, PETG, PC, PCTG.
4. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 3, wherein the method comprises the following steps:
the fluorine-containing polymer material layer and the thermoplastic polymer material layer are formed through one-time co-extrusion or structural adhesive bonding.
5. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the thickness of the light-transmitting waterproof layer is more than or equal to 200 mu m and less than or equal to 500 mu m.
6. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the material of the first adhesive film layer comprises: EVA, POE, EPE.
7. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the thickness of the first adhesive film layer is more than or equal to 0.2mm and less than or equal to 0.6mm.
8. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the second adhesive film layer comprises a transparent EVA adhesive film layer, a transparent POE adhesive film layer or a co-extrusion EPE adhesive film layer.
9. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the thickness of the second adhesive film layer is more than or equal to 0.2mm and less than or equal to 0.6mm.
10. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 1, wherein the method comprises the following steps:
the photovoltaic backsheet includes: TPE type back sheet, TPT type back sheet, KPC type back sheet, FFC type back sheet, CPC type back sheet or co-extruded back sheet.
11. The method for manufacturing the novel light impact-resistant photovoltaic module according to claim 10, wherein the method comprises the following steps:
the thickness of the photovoltaic backboard is more than or equal to 0.2mm and less than or equal to 0.7mm.
12. Novel light-weight impact-resistant photovoltaic module is characterized in that:
a novel lightweight impact-resistant photovoltaic module comprising the novel lightweight impact-resistant photovoltaic module produced by the production method of the novel lightweight impact-resistant photovoltaic module of any one of claims 1 to 11.
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