CN116435392B - Flexible photovoltaic module - Google Patents
Flexible photovoltaic module Download PDFInfo
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- CN116435392B CN116435392B CN202310561448.XA CN202310561448A CN116435392B CN 116435392 B CN116435392 B CN 116435392B CN 202310561448 A CN202310561448 A CN 202310561448A CN 116435392 B CN116435392 B CN 116435392B
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- layer
- pet
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- adhesive film
- permeability
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- 238000010030 laminating Methods 0.000 claims abstract description 4
- 239000002313 adhesive film Substances 0.000 claims description 41
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- 239000011737 fluorine Substances 0.000 claims description 8
- 239000010408 film Substances 0.000 description 29
- 239000000463 material Substances 0.000 description 12
- 238000002834 transmittance Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 102100037681 Protein FEV Human genes 0.000 description 1
- 101710198166 Protein FEV Proteins 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H01L31/04—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
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a flexible photovoltaic module, which comprises a PET layer 1, a first high-permeability film 2, a front-layer impact-resistant PET 3 and a second high-permeability film 4 which are sequentially laminated, a solar cell layer 5, a first high-cutoff film 6, a back-layer supporting PET 7, a second high-cutoff film 8 and a back plate 9, wherein the first high-cutoff film, the back-layer supporting PET 7, the second high-cutoff film 8 and the back plate 9 are laminated into a whole through a laminating machine. This flexible photovoltaic module can increase positive luminousness, promotes subassembly generating efficiency, uses special structural design simultaneously, can promote the bulk strength of subassembly, forms better protection to inside battery piece.
Description
Technical Field
The invention belongs to the technical field of photovoltaics, and particularly relates to a flexible photovoltaic module.
Background
In the new energy technology, the photovoltaic module generates electricity as a representative of clean energy, and besides the traditional glass frame module, the light flexible module has the advantages of light weight, convenient installation, wide application scene and the like, and has very wide development prospect in commercial buildings and factory building roofs with civil roofs and partial bearing structures being insufficient.
At present, a light photovoltaic module generally uses high molecular materials such as PET, ETFE, glass fiber and the like as a transparent front layer to replace front glass, so that the weight of the module can be greatly reduced, but the low light transmittance of the materials themselves leads to low photovoltaic power generation efficiency; meanwhile, the material support with higher strength such as front glass is lacked, the overall structural strength of the flexible assembly can be reduced, and the protection of the battery piece inside the photovoltaic assembly can be influenced.
Disclosure of Invention
In view of the above, the invention provides a flexible photovoltaic module, which can increase the front light transmittance, improve the power generation efficiency of the module, and simultaneously, by using a special structural design, the overall strength of the module can be improved, so that better protection is formed on the internal battery piece.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
The utility model provides a flexible photovoltaic module, includes PET layer (1), first high transparent plastic film (2), preceding layer shock resistance PET (3), the high transparent plastic film of second (4) that stack gradually and set up, solar cell layer (5), first high stop plastic film (6), backing layer support PET (7), the high stop plastic film of second (8), backplate (9), through laminator lamination integrated into one piece.
Further, the PET (1) is fluorine-containing uvioresistant coating PET.
Further, the front-layer impact-resistant PET (3) is a fluorine-containing anti-ultraviolet coating front-layer impact-resistant PET (3).
Furthermore, the fluorine-containing anti-ultraviolet coating front layer impact-resistant PET (3) light-receiving surface is plated with an antireflection film.
Further, the first high-permeability adhesive film (2) and the second high-permeability adhesive film (4) are both provided with hollowed areas for placing the front-layer impact-resistant PET (3).
Further, the first high-cut-off adhesive film (6) and the second high-cut-off adhesive film (8) are both provided with hollowed-out areas for placing the back layer to support the PET (7).
Further, the back plate (9) is a highly reflective coated back plate.
The beneficial effects are that: the invention provides a flexible photovoltaic module, which can increase the light transmittance of the front side, improve the power generation efficiency of the module, and simultaneously, the whole strength of the module can be improved by using a special structural design, so that better protection is formed on an internal battery piece.
Drawings
Fig. 1 is a schematic structural diagram of a flexible photovoltaic module according to an embodiment of the present invention.
Fig. 2 is an overall schematic diagram of a flexible photovoltaic module according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second high-permeability film of a flexible photovoltaic module according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a structure of a flexible photovoltaic module before lamination according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a laminated flexible photovoltaic module according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail below with reference to the accompanying drawings and by way of examples of some alternative embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention.
As shown in fig. 1-3, a flexible photovoltaic module comprises a PET layer 1, a first high-permeability film 2, a front-layer impact-resistant PET 3, a second high-permeability film 4, a solar cell layer 5, a first high-cutoff film 6, a back-layer supporting PET 7, a second high-cutoff film 8 and a back plate 9 which are sequentially laminated, and laminated and integrally formed through a laminating machine.
Further, the PET 1 is fluorine-containing uvioresistant coating PET.
Preferably, the material of the high-permeability adhesive film and the high-cutoff adhesive film is POE.
Further, the front-layer impact-resistant PET 3 is fluorine-containing anti-ultraviolet coating front-layer impact-resistant PET.
The beneficial effects 1 are that: the front surface adopts a multi-layer structure material, namely a PET layer 1 (hard), a first high-permeability film 2 (soft), a front-layer impact-resistant PET 3 (hard) and a second high-permeability film 4 (soft), the impact resistance of the assembly is improved by the buffer effect of the multi-layer structure, and the battery slices in the flexible assembly are protected;
In addition, the back adopts the material with positive structural symmetry, guarantees photovoltaic module's structural symmetry, is difficult for appearing buckling deformation under the subassembly nature placed state and leads to the emergence of inside battery piece atress.
Further, the fluorine-containing anti-ultraviolet coating front layer impact-resistant PET 3 light receiving surface is plated with an antireflection film.
The light transmittance of the response spectrum band (generally 400-1000 nm, the optimal band range is 500-600 nm) of the photovoltaic module is improved by increasing the anti-reflection film with the low refractive index less than or equal to 1.4 material film layer and controlling the film thickness of the anti-reflection film to be 1/4 wavelength of light and the range to be 125-150 nm, and the optical film can be bonded with POE material, so that the light transmittance of the front material to the battery piece can be greatly improved, and the output power of the module is improved.
Further, the first high-permeability adhesive film 2 and the second high-permeability adhesive film 4 are both provided with hollowed areas for placing the front-layer impact-resistant PET3.
Further, the first high-cut-off adhesive film 6 and the second high-cut-off adhesive film 8 are both provided with hollowed-out areas for placing the back layer supporting PET7.
The hollowed-out area of the first high-permeability film 2 is positioned on the backlight surface of the first high-permeability film 2, and the hollowed-out area of the second high-permeability film 4 is positioned on the light-receiving surface of the second high-permeability film 4.
The hollow area of the first high-cut-off adhesive film 6 is located on the backlight surface of the first high-cut-off adhesive film 6, and the hollow area of the second high-cut-off adhesive film 8 is located on the light receiving surface of the second high-cut-off adhesive film 8.
Further, the back plate 9 is a back plate with a high reflection coating, and the material of the back plate may be PET.
Preferably, the thickness of the inner layer PET (front layer anti-impact PET 3 and back layer supporting PET 7) is 0.3mm, the thickness of the material of the inner layer POE (first high transparent adhesive film 2, second high transparent adhesive film 4, first high cut-off adhesive film 6 and second high cut-off adhesive film 8) is 0.45-0.7 mm, the overall size of the POE is consistent with that of the outer layer PET (PET layer 1 and back plate 9), a hollowed-out part basically consistent with that of the inner layer PET is formed in the middle area, the depth is about 0.15mm (half of the PET thickness), the area of the POE hollowed-out part faces the PET to combine and fix the PET, the melting and flowing of the front and back PET of the inner layer in the laminating process can be effectively controlled, the inner layer PET is asymmetric in a displacement structure, and the PET does not cover the battery piece completely, and the protection effect can not be achieved.
As shown in fig. 3, the second high-permeability film 4 is composed of 2 parts, 10 represents a hollowed-out area of the second high-permeability film 4, and 11 represents an edge area of the first high-permeability film 2; the first high-permeability adhesive film 2, the first high-cutoff adhesive film 6 and the second high-cutoff adhesive film 8 have the same structure as the second high-permeability adhesive film 4 and comprise hollow areas and edge areas.
It should be noted that, the hollowed-out area of the first high-permeability film 2 is located on the backlight surface of the first high-permeability film 2, and the hollowed-out area of the second high-permeability film 4 is located on the light receiving surface of the second high-permeability film 4.
The hollow area of the first high-cut-off adhesive film 6 is located on the backlight surface of the first high-cut-off adhesive film 6, and the hollow area of the second high-cut-off adhesive film 8 is located on the light receiving surface of the second high-cut-off adhesive film 8.
Preferably, electrical components such as solar cells in the photovoltaic module and four sides of the module are provided with safe electrical gaps (generally 10-30 mm), the sizes of the outer PET (PET layer 1 and the back plate 9) are the sizes of the module, the length and width sizes of the PET layer 1 and the back plate 9 are the same, the length and width sizes of the solar cell layer (5) are smaller than those of the PET layer (1) by 10-30 mm, the sizes of the inner PET (front shock resistant PET 3 and the back layer supporting PET 7) are between the sizes of the module and the sizes of the electrical components, four layers of POE films (a first high transparent film 2, a second high transparent film 4, a first high cut-off film 6 and a second high cut-off film 8) are melted into a whole after the module is laminated, the four sides of the module are of three-layer structure, and the POE materials with low water vapor permeability can effectively block water vapor from entering in the outdoor use process of the module. Fig. 4 is a schematic structure before lamination, and fig. 5 is a schematic structure after lamination, wherein the adhesive film at the edge position is melted and integrated.
The junction box can be arranged on the front and the back of the assembly according to the use requirement, and special equipment is used for removing the non-conductive material of the front layer or the back layer of the circuit bus band position in the power generation unit in actual production.
The beneficial effects are that: the invention provides a flexible photovoltaic module, which can increase the light transmittance of the front side, improve the power generation efficiency of the module, and simultaneously, the whole strength of the module can be improved by using a special structural design, so that better protection is formed on an internal battery piece.
Although the photovoltaic module obtained in this embodiment can obtain an excellent implementation effect when applied to the photovoltaic field, the photovoltaic field is not the only application field of the photovoltaic module, and a person skilled in the art can fully apply the photovoltaic module disclosed in the present invention to other suitable fields based on the characteristics and the technical effects achieved by the photovoltaic module according to the needs of the actual application field, and the application does not need any creative labor, and still belongs to the spirit of the present invention, so the application is also considered as the protection scope of the present invention.
It will be readily understood by those skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention and that various modifications, combinations, substitutions, improvements, etc. may be made without departing from the spirit and principles of the invention.
Claims (6)
1. The flexible photovoltaic module is characterized by comprising a PET layer (1), a first high-permeability adhesive film (2), a front-layer impact-resistant PET (3) and a second high-permeability adhesive film (4) which are sequentially laminated, a solar cell layer (5), a first high-cutoff adhesive film (6), a back-layer supporting PET (7), a second high-cutoff adhesive film (8) and a back plate (9), wherein the first high-cutoff adhesive film, the back-layer supporting PET, the second high-cutoff adhesive film (8) and the back plate are laminated into a whole through a laminating machine;
the PET layer (1) is fluorine-containing uvioresistant coating PET;
The front-layer impact-resistant PET (3) is fluorine-containing anti-ultraviolet coating front-layer impact-resistant PET;
The front layer impact-resistant PET (3) light-receiving surface is plated with an antireflection film, the refractive index of the antireflection film is less than or equal to 1.4, and the thickness of the film layer is 125-150 nm;
The first high-permeability adhesive film (2) and the second high-permeability adhesive film (4) are both provided with hollowed areas for placing the front-layer impact-resistant PET (3).
2. The flexible photovoltaic module according to claim 1, wherein the hollowed-out area of the first high-permeability film (2) is located on the backlight surface of the first high-permeability film (2), and the hollowed-out area of the second high-permeability film (4) is located on the light receiving surface of the second high-permeability film (4).
3. The flexible photovoltaic module according to claim 1, characterized in that the first high-cut-off adhesive film (6) and the second high-cut-off adhesive film (8) are both provided with hollowed-out areas for placing the back layer supporting PET (7).
4. A flexible photovoltaic module according to claim 3, characterized in that the hollowed-out area of the first high-cut-off adhesive film (6) is located on the backlight surface of the first high-cut-off adhesive film (6), and the hollowed-out area of the second high-cut-off adhesive film (8) is located on the light receiving surface of the second high-cut-off adhesive film (8).
5. The flexible photovoltaic module according to claim 1, characterized in that the backsheet (9) is a highly reflective coated backsheet.
6. The flexible photovoltaic module according to claim 1, characterized in that the length-width dimension of the solar cell layer (5) is smaller than the length-width dimension of the PET layer (1) by 10-30 mm, and the length-width dimension of the PET layer (1) is the same as the length-width dimension of the back sheet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310561448.XA CN116435392B (en) | 2023-05-16 | 2023-05-16 | Flexible photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310561448.XA CN116435392B (en) | 2023-05-16 | 2023-05-16 | Flexible photovoltaic module |
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| Publication Number | Publication Date |
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| CN116435392A CN116435392A (en) | 2023-07-14 |
| CN116435392B true CN116435392B (en) | 2024-07-30 |
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| CN202310561448.XA Active CN116435392B (en) | 2023-05-16 | 2023-05-16 | Flexible photovoltaic module |
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| AT12996U1 (en) * | 2011-06-07 | 2013-03-15 | Austria Tech & System Tech | PHOTOVOLTAIC MODULE AND USE THEREOF |
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