CN117577714A - Photovoltaic module and production method thereof - Google Patents
Photovoltaic module and production method thereof Download PDFInfo
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- CN117577714A CN117577714A CN202311812816.XA CN202311812816A CN117577714A CN 117577714 A CN117577714 A CN 117577714A CN 202311812816 A CN202311812816 A CN 202311812816A CN 117577714 A CN117577714 A CN 117577714A
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- adhesive film
- substrate
- film layer
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- liquid adhesive
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000002313 adhesive film Substances 0.000 claims abstract description 269
- 239000000758 substrate Substances 0.000 claims abstract description 123
- 239000007788 liquid Substances 0.000 claims abstract description 99
- 238000004806 packaging method and process Methods 0.000 claims abstract description 31
- 239000003292 glue Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 50
- 239000002994 raw material Substances 0.000 claims description 29
- 238000005507 spraying Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 239000011521 glass Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 239000003960 organic solvent Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000003475 lamination Methods 0.000 description 11
- 239000012528 membrane Substances 0.000 description 11
- 238000010248 power generation Methods 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- -1 Polyethylene vinylacetate Polymers 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000010 aprotic solvent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 229920006124 polyolefin elastomer Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000012780 transparent material Substances 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- 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 application relates to a photovoltaic module and a production method of the photovoltaic module, wherein the photovoltaic module comprises a packaging piece, the packaging piece comprises a substrate and a glue film layer, and the glue film layer is positioned on one side of the substrate along the thickness direction of the packaging piece. The liquid adhesive film on the surface of the substrate is solidified to form an adhesive film layer and is fixed on the substrate, so that the adhesive film layer is prefabricated on the surface of the substrate, and the flatness of the surface of the adhesive film layer can be improved.
Description
Technical Field
The application relates to the technical field of photovoltaic power generation, in particular to a photovoltaic module and a production method of the photovoltaic module.
Background
The photovoltaic module comprises a battery piece, wherein adhesive films and photovoltaic glass are arranged on two sides of the battery piece, and the adhesive films can be connected with the battery piece and the photovoltaic glass after lamination. At present, when the adhesive film is paved on the photovoltaic glass, firstly, the adhesive film is cut into the size corresponding to the photovoltaic glass, then the adhesive film is paved on the surface of the photovoltaic glass, the adhesive film is easy to slip or arch in the process of paving the adhesive film, the adhesive film is misplaced or the surface of the adhesive film is uneven, and in the process of paving the battery piece and laminating, the battery piece is easy to generate hidden crack, so that the product quality is influenced.
Disclosure of Invention
The application provides a photovoltaic module and a production method of the photovoltaic module, which are used for solving the problem of uneven paving of a photovoltaic glass surface adhesive film.
The embodiment of the application provides a photovoltaic module, the photovoltaic module includes: the packaging piece comprises a substrate and a glue film layer, and the glue film layer is positioned on one side of the substrate along the thickness direction of the photovoltaic module; the adhesive film layer is prefabricated on the surface of the substrate, and the liquid adhesive film on the surface of the substrate can be solidified to form the adhesive film layer and is fixed on the substrate.
In one possible embodiment, the thickness of the substrate is 1.5mm to 2.5mm;
the thickness of the adhesive film layer is 0.1mm to 0.5mm.
In one possible embodiment, the substrate is photovoltaic glass.
In one possible embodiment, the thickness of the edge of the adhesive film layer is greater than the thickness of the middle position along the width direction of the package.
In one possible embodiment, along the thickness direction of the package, a plurality of adhesive film layers are disposed on the surface of the substrate, and materials of the plurality of adhesive film layers are different.
In one possible embodiment, a first body portion and a second body portion are included along the adhesive film layer, the second body portion is disposed around the first body portion, and materials of the first body portion and the second body portion are different.
In a possible implementation manner, a concave portion is arranged on one side, provided with the adhesive film layer, of the substrate, and the adhesive film layer can extend into the concave portion.
In one possible implementation manner, the photovoltaic module further comprises a battery piece, the packaging piece is arranged on two sides of the battery piece along the thickness direction of the photovoltaic module, and the adhesive film layer faces the battery piece.
The embodiment of the application also provides a production method of the photovoltaic module, which is used for producing the photovoltaic module, the photovoltaic module comprises a packaging piece, the packaging piece comprises a substrate and a glue film layer, and the production method of the photovoltaic module comprises the following steps:
melting the raw materials of the adhesive film layer to form a liquid adhesive film;
spraying the liquid adhesive film to the substrate;
and solidifying the liquid adhesive film into an adhesive film layer.
In one possible embodiment, when the raw material of the adhesive film layer is melted to form a liquid adhesive film, the production method includes:
adding an organic solvent into the raw materials of the adhesive film layer, and uniformly mixing;
heating the raw materials of the adhesive film layer and the organic solvent.
In one possible embodiment, the production method includes, before curing the liquid adhesive film into an adhesive film layer:
melting the raw materials of the multiple adhesive film layers to form liquid adhesive films of multiple different materials;
and sequentially spraying liquid adhesive films of various materials on the surface of a substrate, forming a plurality of adhesive film layers after the liquid adhesive films are solidified, and forming a plurality of adhesive film layers on the surface of the substrate along the thickness direction of the packaging piece.
In one possible embodiment, when the liquid adhesive film is sprayed onto the substrate, the production method includes:
and adjusting the spraying amount of the liquid adhesive film at different positions to enable the spraying amount at the edge position to be larger than that at the middle position, so that the thickness of the edge position of the cured adhesive film layer is larger than that at the middle position.
In one possible embodiment, the adhesive film layer includes a first body portion and a second body portion of different materials, and the second body portion is disposed around the first body portion, and the production method includes, before curing the liquid adhesive film into the adhesive film layer:
melting the raw material of the first main body part into a liquid adhesive film of a first material;
melting the raw material of the second main body part into a liquid adhesive film of a second material;
adjusting the materials of liquid adhesive films sprayed at different positions, and spraying the liquid adhesive film of a first material at the middle position of the substrate and the liquid adhesive film of a second material at the edge position along the width direction of the substrate;
and spraying a liquid adhesive film of a second material at the edge of the substrate along the length direction of the substrate so as to enable the cured adhesive film layer to surround the first main body part by the second main body part.
In one possible embodiment, the method of producing, when curing the liquid adhesive film into an adhesive film layer, comprises:
the temperature of the curing stage is consistent with the temperature of the liquid adhesive film.
The application relates to a photovoltaic module and a production method of the photovoltaic module, wherein the photovoltaic module comprises a packaging piece, the packaging piece comprises a substrate and a glue film layer, and the glue film layer is positioned on one side of the substrate along the thickness direction of the packaging piece. The liquid adhesive film on the surface of the substrate is solidified to form an adhesive film layer and is fixed on the substrate, so that the adhesive film layer is prefabricated on the surface of the substrate, and the flatness of the surface of the adhesive film layer can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is an exploded view of a photovoltaic module provided in an embodiment of the present application;
FIG. 2 is a schematic structural view of an embodiment of a package provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of another embodiment of a package provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of another embodiment of a package provided in an embodiment of the present application.
Reference numerals:
1-a photovoltaic module;
11-packaging;
111-a substrate;
112-an adhesive film layer;
112 a-a first body portion;
112 b-a second body portion;
12-cell.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Detailed Description
For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
As shown in fig. 1 to 4, the embodiment of the application provides a photovoltaic module 1, the photovoltaic module 1 includes a package 11, the package 11 includes a substrate 111 and a film layer 112, and the film layer 112 is located at one side of the substrate 111 along a thickness direction Z of the photovoltaic module 1. The liquid adhesive film on the surface of the substrate 111 is cured to form an adhesive film layer 112, and is fixed on the substrate 111, so that the adhesive film layer 112 is prefabricated on the surface of the substrate 111.
When the adhesive film layer 112 is disposed on the substrate 111, the raw material of the adhesive film layer 112 can be melted into a liquid adhesive film, and the liquid adhesive film is disposed on the surface of the substrate 111, so that the liquid adhesive film has ductility and can be flatly laid on the surface of the substrate 111, and after being cured into the adhesive film layer 112, the adhesive film layer 112 is fixed on the surface of the substrate 111, so as to improve the flatness of the surface of the adhesive film layer 112.
As shown in fig. 1, in one possible embodiment, the photovoltaic module 1 further includes a battery piece 12, and the packages 11 are disposed on both sides of the battery piece 12 along the thickness direction Z of the photovoltaic module 1. The adhesive film layers 112 in the package 11 are all located on the side of the substrate 111 facing the battery cells 12.
In the photovoltaic module 1, the packaging member 11 is used for protecting the battery piece 12, so that the damage possibility of the battery piece 12 is reduced, and the service life of the photovoltaic module 1 is prolonged. The packaging piece 11 is provided with the glued membrane layer 112 towards one side of battery piece 12, after battery piece 12 and packaging piece 11 pass through the lamination, and packaging piece 11 passes through glued membrane layer 112 to be connected with battery piece 12, improves glued membrane layer 112 surface's roughness can reduce the hidden possibility of splitting of battery piece 12 in the lamination process.
In one possible embodiment, the substrate 111 is photovoltaic glass, which has better light transmittance, so that the battery piece 12 can receive more sunlight, which is beneficial to improving the power generation efficiency of the photovoltaic module 1, and meanwhile, the photovoltaic glass has higher mechanical strength and better corrosion resistance, which is beneficial to improving the service life of the photovoltaic glass.
In one possible embodiment, the substrate 111 may be made of a transparent plastic plate or other transparent material, so that solar light can pass through the substrate 111 to irradiate the battery piece 12, and meanwhile, the influence of the external environment on the battery piece 12 can be reduced.
In one possible embodiment, the thickness of the substrate 111 is 1.5mm to 2.5mm.
The thickness of the substrate 111 may be 1.5mm, 2mm, 2.5mm, and the like, preferably 2mm, and the substrate 111 is located at two sides of the battery piece 12, solar light can pass through the substrate 111 to irradiate the battery piece 12, if the thickness of the substrate 111 is too large, the light transmittance of the substrate 111 can be reduced, the power generation efficiency of the photovoltaic module 1 is reduced, the production cost and the transportation cost of the photovoltaic module 1 can be increased, the influence of the external environment on the battery piece 12 can be reduced by the substrate 111, the service life of the photovoltaic module 1 can be prolonged, and if the thickness of the substrate 111 is too small, the strength and the like of the substrate 111 can be reduced, and the service life of the photovoltaic module 1 can be further reduced.
In one possible embodiment, the thickness of the glue film layer 112 is 0.1mm to 0.5mm.
The thickness of the adhesive film layer 112 may be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, and the like, preferably 0.3mm, where the adhesive film layer 112 is used to connect the substrate 111 and the battery plate 12, if the thickness of the adhesive film layer 112 is too small, the connection strength between the substrate 111 and the battery plate 12 may be reduced, and further the reliability of the photovoltaic module 1 may be affected, and if the thickness of the adhesive film layer 112 is too large, the light transmittance of the adhesive film layer 112 may be reduced, and further the power generation efficiency of the photovoltaic module 1 may be reduced.
In one possible embodiment, as shown in fig. 2, the thickness of the adhesive film 112 is different at different positions along the width direction of the package 11, and the thickness of the edge position is greater than the thickness of the middle position.
In the lamination process of the photovoltaic module 1, the packaging piece 11 can be heated, the adhesive film layer 112 is melted, the adhesive film layer 112 has certain fluidity after being melted, in the lamination process, the pressure of the laminating machine on the edge position of the packaging piece 11 can be larger than the pressure of the middle position, the edge of the packaging piece 11 can be caused to overflow, the thickness of the edge position of the adhesive film layer 112 can play a buffering role on the pressure of the laminating machine, and the possibility of overflowing of the edge position is reduced. The thickness of the middle position of the adhesive film layer 112 is smaller, a step is formed between the adhesive film layer 112 and the edge position, and air bubbles generated by the adhesive film layer 112 in the lamination process can be discharged from the junction of the edge position and the middle position, so that the possibility of the adhesive film layer 112 having air bubbles after lamination is reduced.
In one possible embodiment, the bump is formed on the side of the adhesive film 112 away from the substrate 111 at a position of greater thickness in the adhesive film 112. The adhesive film layer 112 may further include a plurality of protruding portions, so that the thickness of the adhesive film layer 112 at the position where the protruding portions are disposed is greater than that of other positions, and the plurality of protruding portions are disposed at intervals along the length direction or the width direction of the package 11.
The photovoltaic module 1 comprises a plurality of battery pieces 12, the battery pieces 12 are connected through welding strips, welding spots welded by the battery pieces 12 can be positioned between adjacent protruding parts, acting force of the adhesive film layer 112 on the welding spots in the lamination process is reduced, the possibility of hidden cracking of welding positions of the battery pieces 12 is reduced, and the yield of the photovoltaic module 1 is improved.
As shown in fig. 3, in one possible embodiment, a plurality of adhesive film layers 112 are disposed on the surface of the substrate 111, and the plurality of adhesive film layers 112 are sequentially disposed on the surface of the substrate 111 along the thickness direction of the package 11, and the materials of the plurality of adhesive film layers 112 are different.
The material of the multiple adhesive film layers 112 can be polyolefin elastomer (POE adhesive film for short), and the POE adhesive film has the characteristics of low water vapor transmittance, good heat resistance, good aging resistance, strong PID resistance and the like, so that the power generation and the service life of the photovoltaic module 1 can be improved, but the raw materials of the POE adhesive film are short, and the price is higher. The material of the plurality of adhesive film layers 112 may also be polyethylene-polyvinyl acetate copolymer (Polyethylene vinylacetate, EVA), which is called EVA adhesive film, which has high transparency and adhesion, and also has high durability, and is capable of resisting high temperature, moisture, ultraviolet rays, etc., so that the power generation and reliability of the photovoltaic module 1 can be improved, but the anti-PID performance of the EVA adhesive film is poor. The adhesive film layer 112 may also be other materials that can be used to bond the battery sheet 12 and the substrate 111. The surface of the substrate 111 is provided with a plurality of adhesive film layers 112 made of different materials, so that the package 11 can have the properties of the adhesive film layers 112, thereby improving the power generation efficiency, the service life and the like of the photovoltaic module 1.
In one possible embodiment, three adhesive film layers 112 may be disposed along a direction away from the substrate 111, where the three adhesive film layers 112 are an EVA adhesive film, a POE adhesive film, and an EVA adhesive film, respectively, to form an EPE adhesive film.
The EVA adhesive film and the POE adhesive film have good heat resistance and ageing resistance, and the EVA adhesive film also has good ultraviolet resistance, so that the EPE adhesive film has good weather resistance, can reduce the influence of external environment on the battery piece 12, and is beneficial to prolonging the service life of the photovoltaic module 1; the water vapor permeability of the POE adhesive film is low, and is about 1/5 of that of the EVA adhesive film with the same thickness, so that the EPE adhesive film also has lower water vapor permeability, and the possibility that water vapor enters the photovoltaic module 1 to be contacted with the battery piece 12 can be reduced; the POE adhesive film also has strong PID resistance, and the EPE adhesive film also has strong PID resistance, so that the power generation efficiency of the photovoltaic module 1 can be improved; meanwhile, the POE adhesive film and the EVA adhesive film are combined, so that the using amount of the POE adhesive film can be reduced, and the production cost of the packaging piece 11 can be reduced.
In one possible embodiment, two adhesive film layers 112 may be further disposed along a direction away from the substrate 111, where the two adhesive film layers 112 are both EVA adhesive films, and different additives may be added to the two EVA adhesive films or the component content in the two EVA adhesive films may be adjusted. For example, an alkaline organic aid may be added to the EVA film on the side away from the substrate 111 to neutralize acetic acid that is deposited during use of the EVA film, reducing the likelihood of corrosion of the battery sheet 12. Two EVA adhesive films added with different organic additives are arranged on the surface of the substrate 111, so that the package 11 can combine the properties of the two EVA adhesive films, and the comprehensive performance of the package 11 is improved.
As shown in fig. 4, in one possible embodiment, the adhesive film layer 112 includes a first main body portion 112a and a second main body portion 112b, where the first main body portion 112a is located at an intermediate position of the substrate 111, the second main body portion 112b is disposed around the first main body portion 112a, and the materials of the first main body portion 112a and the second main body portion 112b are different.
The first main part 112a is located the intermediate position of base plate 111, can be the EVA glued membrane, and the second main part 112b is located the border position of base plate 111, can be the POE glued membrane, compares in the EVA glued membrane, and the steam transmissivity of POE glued membrane is lower, heat aging resistance can be better, sets up the POE glued membrane in the border position, can reduce the inside possibility of steam entering photovoltaic module 1, is favorable to improving the reliability and the life of photovoltaic module 1. Meanwhile, the strong PID resistance of the POE adhesive film is good, and because the positive ions in the PID effect drift is caused by the bias voltage between the frame and the battery, most of PID attenuation generating parts start from the battery piece 12 which is close to the edge position of the frame in the photovoltaic module 1, the POE adhesive film is arranged at the edge of the substrate 111, so that the POE adhesive film corresponds to the position which is easy to generate the PID effect, and the possibility of generating the PID effect of the photovoltaic module 1 is reduced. The raw materials of POE glued membrane are short, and the price is higher, sets up EVA glued membrane in the intermediate position of base plate 111 and can reduce the manufacturing cost of glued membrane layer 112.
In one possible embodiment, the material of the first body portion 112a is EVA, and the material of the second body portion 112b is POE, so that the positions of the first body portion 112a and the second body portion 112b in the adhesive film layer 112 can be adjusted according to the position of the battery cell 12 in the photovoltaic module 1 or other requirements.
In one possible embodiment, the surface of the substrate 111 facing the adhesive film layer 112 is provided with a recess, and the adhesive film layer 112 can extend into the recess.
The adhesive film layer 112 extends into the concave portion, so that the relative position between the adhesive film layer 112 and the substrate 111 can be limited along the length direction and/or the width direction of the substrate 111, meanwhile, the contact area between the substrate 111 and the adhesive film layer 112 can be increased, the possibility that the adhesive film layer 112 slides relative to the substrate 111 is reduced, and the reliability of the package 11 is improved.
The embodiment of the application also provides a production method of the photovoltaic module 1, which is used for producing the photovoltaic module 1, the photovoltaic module 1 comprises a packaging piece 11, the packaging piece 11 comprises a substrate 111 and a glue film layer 112, and the production method comprises the following steps:
s1, melting raw materials of a glue film layer 112 into a liquid glue film;
s2, spraying the liquid adhesive film to the substrate 111;
s3, solidifying the liquid adhesive film into an adhesive film layer 112.
The liquid adhesive film is sprayed to the substrate 111, has ductility, improves the balance of the liquid adhesive film laid on the substrate 111, and can improve the surface flatness of the adhesive film layer 112 after the liquid adhesive film is solidified into the adhesive film layer 112. The photovoltaic module 1 further comprises a battery piece 12, the two sides of the battery piece 12 are provided with packaging pieces 11 along the thickness direction of the photovoltaic module 1, a glue film layer 112 in the packaging pieces 11 faces the battery piece 12, and the packaging pieces 11 are connected with the battery piece 12 through lamination. In the lamination process, the higher flatness of the surface of the adhesive film layer 112 can reduce the acting force of the adhesive film layer 112 on the battery piece 12, so as to reduce the possibility of hidden cracking of the battery piece 12.
When the raw material of the adhesive film layer 112 is melted into a liquid adhesive film, the production method further comprises the following steps:
s11, adding an organic solvent into the raw materials of the adhesive film layer 112, and uniformly mixing the organic solvent with the raw materials of the adhesive film layer 112;
s12, heating the raw materials and the organic solvent of the adhesive film layer 112.
The organic solvent added into the raw material of the adhesive film layer 112 may be an organic aprotic solvent such as tetrahydrofuran, so as to facilitate melting the raw material of the adhesive film layer 112 into a liquid adhesive film. The raw materials of the film layer 112 and the organic solvent are mixed and heated to 60-80 ℃ to form a liquid film, the solid-to-liquid ratio of the liquid film is 20-80%, so that the liquid film has certain ductility, and the flatness of the surface of the liquid film can be improved when the liquid film is sprayed on the substrate 111.
In one possible embodiment, the package 11 includes a plurality of adhesive film layers 112, and the plurality of adhesive film layers 112 are sequentially disposed on the surface of the substrate 111 along the thickness direction of the package 11.
Before curing the liquid adhesive film into the adhesive film layer 112, the production method comprises the following steps:
s13, melting the raw materials of the multiple adhesive film layers 112 into liquid adhesive films with different materials;
s21, spraying liquid adhesive films of various materials on the surface of the substrate 111 in sequence, curing the liquid adhesive films into an adhesive film layer 112, and forming the adhesive film layer 112 of various materials on the surface of the substrate 111.
The raw materials of the multiple adhesive film layers 112 are fused into different liquid adhesive films, and then the liquid adhesive films of different materials are sprayed on the surface of the substrate 111 in sequence, so that a plurality of layers of liquid adhesive films of different materials are formed on the surface of the substrate 111. After the spraying of the multi-layer liquid adhesive film is completed, the multi-layer liquid adhesive film is simultaneously cured, so that the adhesive film layer 112 of various materials is formed on the surface of the substrate 111.
In one possible embodiment, the thickness of the adhesive film layer 112 at the edge of the substrate 111 is greater than the thickness of the adhesive film layer 112 at the middle of the substrate 111 along the width direction of the package 11.
Before curing the liquid adhesive film into the adhesive film layer 112, the production method comprises the following steps:
s22, adjusting the spraying amount of the liquid adhesive film at different positions to enable the spraying amount at the edge position to be larger than that at the middle position, so that the thickness of the edge position of the cured adhesive film layer 112 is larger than that at the middle position.
The thickness of the adhesive film layer 112 at the edge position of the substrate 111 is greater than that of the adhesive film layer 112 at the middle position, so that the possibility of glue overflow or bubble generation of the photovoltaic module 1 can be reduced after lamination. The liquid adhesive film has certain viscosity, and after the spraying amount of the liquid adhesive film at different positions is adjusted, the thickness of the liquid adhesive film at different positions of the substrate 111 can be increased, and the larger the spraying amount of the liquid adhesive film is, the larger the thickness of the liquid adhesive film is. The spraying amount of the liquid adhesive film at the edge position of the substrate 111 is increased, and after curing, the thickness of the adhesive film layer 112 at the edge position of the substrate 111 can be made larger than that of the adhesive film layer 112 at the middle position.
In one possible embodiment, the adhesive film layer 112 includes a plurality of protrusions disposed at intervals along the length direction or the width direction of the package 11. In order to produce the adhesive film layer 112, when the liquid adhesive film is sprayed onto the surface of the substrate 111, the spraying amount of the liquid adhesive film disposed at different positions of the substrate 111 may be adjusted, the spraying amount of the liquid adhesive film at the position corresponding to the protruding portion may be increased, and after curing, the adhesive film layer 112 having a plurality of protruding portions may be formed.
The adhesive film layer 112 on the surface of the substrate 111 includes a first body portion 112a and a second body portion 112b, and the first body portion 112a and the second body portion 112b are made of different materials. The first body 112a is located at a center of the substrate 111, and the second body 112b is disposed around the first body 112 a.
Before curing the liquid adhesive film into the adhesive film layer 112, the production method comprises the following steps:
s14, fusing the raw material of the first main body part 112a into a liquid adhesive film of a first material;
s15, fusing the raw material of the second main body part 112b into a liquid adhesive film of a second material;
s23, adjusting the materials of the liquid adhesive films sprayed at different positions along the width direction of the substrate 111, so that the liquid adhesive film of the first material is sprayed at the middle position of the substrate 111, and the liquid adhesive film of the second material is sprayed at the edge position;
and S24, spraying a liquid adhesive film of a second material on the edge of the substrate 111 along the length direction of the substrate 111 so that the cured adhesive film layer 112, wherein the adhesive film layer 112 of the second material surrounds the adhesive film layer 112 of the first material.
The liquid adhesive film of the second material is sprayed at the edge position of the substrate 111 in the width direction of the substrate 111, then the liquid adhesive film of the second material is sprayed at the edge of the substrate 111 in the length direction of the substrate 111, and the liquid adhesive film of the second material at the edge position of the substrate 111 in the length direction and the edge position in the width direction are connected to each other so that the liquid adhesive film of the second material is disposed around the liquid adhesive film of the first material, and after being cured into the adhesive film layer 112, the second body portion 112b is disposed around the first body portion 112 a.
In curing the liquid adhesive film into the adhesive film layer 112, the production method comprises the following steps:
s31, the temperature of the curing stage is consistent with that of the liquid adhesive film.
The liquid adhesive film can be cured by drying and the like, and the temperature in the curing process can be 60-80 ℃ consistent with the temperature of the liquid adhesive film, so that the difference between the structure of the adhesive film layer 112 formed by curing the liquid adhesive film and the structure of the liquid adhesive film sprayed on the substrate 111 can be reduced.
The embodiment of the application provides a photovoltaic module 1 and a production method of the photovoltaic module, wherein the photovoltaic module 1 comprises a packaging piece 11, the packaging piece 11 comprises a substrate 111 and a glue film layer 112, and the glue film layer 112 is located on one side of the substrate 111 along the thickness direction of the packaging piece 11. The liquid adhesive film on the surface of the substrate 111 is cured to form an adhesive film layer 112, and is fixed on the substrate 111, so that the adhesive film layer 112 is prefabricated on the surface of the substrate 111, and the surface flatness of the adhesive film layer 112 can be improved.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (14)
1. A photovoltaic module, characterized in that the photovoltaic module (1) comprises: the packaging piece (11), the packaging piece (11) comprises a substrate (111) and a glue film layer (112), and the glue film layer (112) is positioned on one side of the substrate (111) along the thickness direction of the photovoltaic module (1); the adhesive film layer (112) is prefabricated on the surface of the substrate (111), and the liquid adhesive film on the surface of the substrate (111) can be solidified to form the adhesive film layer (112) and is fixed on the substrate (111).
2. The photovoltaic module according to claim 1, characterized in that the thickness of the substrate (111) is 1.5mm to 2.5mm;
the thickness of the adhesive film layer (112) is 0.1mm to 0.5mm.
3. The photovoltaic module according to claim 1, characterized in that the substrate (111) is any one of photovoltaic glass or transparent plastic plate.
4. The photovoltaic module according to claim 1, wherein the thickness of the adhesive film layer (112) at the edge position is greater than the thickness at the intermediate position in the width direction of the package (11).
5. The photovoltaic module according to claim 1, wherein a plurality of adhesive film layers (112) are provided on the surface of the substrate (111) in the thickness direction of the package (11), and the materials of the plurality of adhesive film layers (112) are different.
6. The photovoltaic module according to claim 1, characterized in that a first body portion (112 a) and a second body portion (112 b) are included along the glue film layer (112), the second body portion (112 b) is arranged around the first body portion (112 a), and the materials of the first body portion (112 a) and the second body portion (112 b) are different.
7. The photovoltaic module according to claim 1, characterized in that a recess is provided on the side of the substrate (111) on which the adhesive film layer (112) is provided, the adhesive film layer (112) being capable of extending into the recess.
8. The photovoltaic module according to claim 1, characterized in that the photovoltaic module (1) further comprises a cell (12), the package (11) is provided on both sides of the cell (12) in the thickness direction of the photovoltaic module (1), and the adhesive film layer (112) faces the cell (12).
9. A production method of a photovoltaic module for producing a photovoltaic module, the photovoltaic module comprising a package comprising a substrate and a glue film layer, characterized in that the production method of the photovoltaic module (1) comprises:
melting the raw material of the adhesive film layer (112) to form a liquid adhesive film;
spraying the liquid adhesive film to the substrate (111);
the liquid adhesive film is solidified into an adhesive film layer (112).
10. The method of producing a photovoltaic module according to claim 9, wherein when the raw material of the adhesive film layer is melted to form a liquid adhesive film, the method comprises:
adding an organic solvent into the raw materials of the adhesive film layer (112), and uniformly mixing;
heating the raw material of the adhesive film layer (112) and the organic solvent.
11. The method of producing a photovoltaic module according to claim 9, characterized in that before curing the liquid adhesive film into an adhesive film layer (112), the method of producing comprises:
melting raw materials of a plurality of adhesive film layers (112) to form liquid adhesive films of a plurality of different materials;
liquid adhesive films of various materials are sequentially sprayed on the surface of a substrate (111), a plurality of adhesive film layers (112) are formed after the multi-layer liquid adhesive films are solidified, and the surface of the substrate (111) is provided with a plurality of adhesive film layers (112) along the thickness direction of the packaging piece (11).
12. The method of producing a photovoltaic module according to claim 9, characterized in that, when spraying the liquid adhesive film to the substrate (111), the method of producing comprises:
and adjusting the spraying amount of the liquid adhesive film at different positions to enable the spraying amount at the edge position to be larger than that at the middle position, so that the thickness of the edge position of the cured adhesive film layer (112) is larger than that at the middle position.
13. The method of producing a photovoltaic module according to claim 9, wherein the film layer comprises a first body portion and a second body portion of different materials, and the second body portion is disposed around the first body portion, characterized in that before curing the liquid film into the film layer (112), the method of producing comprises:
melting the raw material of the first main body part into a liquid adhesive film of a first material;
melting the raw material of the second main body part into a liquid adhesive film of a second material;
adjusting the materials of liquid adhesive films sprayed at different positions, and spraying the liquid adhesive film of a first material at the middle position of the substrate (111) and the liquid adhesive film of a second material at the edge position along the width direction of the substrate (111);
and spraying a liquid adhesive film of a second material along the length direction of the substrate (111), so that the cured adhesive film layer (112) is formed at the edge position of the substrate (111), and the second main body part (112 b) surrounds the first main body part (112 a).
14. The method of producing a photovoltaic module according to claim 9, characterized in that, in curing the liquid adhesive film into an adhesive film layer (112), the method comprises:
the temperature of the curing stage is consistent with the temperature of the liquid adhesive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311812816.XA CN117577714A (en) | 2023-12-26 | 2023-12-26 | Photovoltaic module and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311812816.XA CN117577714A (en) | 2023-12-26 | 2023-12-26 | Photovoltaic module and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117577714A true CN117577714A (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311812816.XA Pending CN117577714A (en) | 2023-12-26 | 2023-12-26 | Photovoltaic module and production method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN117577714A (en) |
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- 2023-12-26 CN CN202311812816.XA patent/CN117577714A/en active Pending
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