Packaging structure and multi-layer composite solar cell panel module

Abstract

The utility model relates to the technical field of solar cells, in particular to a packaging structure which comprises a first packaging structure layer, the first packaging structure layer is provided with a plurality of through holes, and the through holes can penetrate through the upper surface and the lower surface of the first packaging structure layer. The utility model further provides a multi-layer composite solar cell panel module which is provided with a first packaging structure layer. Compared with the prior art, the stress distribution of the first packaging structure layer can be changed through the through holes, so that the stress is redistributed around the through holes, the phenomenon of stress concentration is relieved, more uniform deformation of the first packaging structure layer during bending is facilitated, local overhigh stress of the first packaging structure layer is reduced, and the reliability of the packaging structure layer is improved. Therefore, the first packaging structure layer is ensured not to be cracked or fractured due to overlarge stress in the bending process, and the condition that all layers of the solar cell panel module are not cracked or layered is ensured, so that the cell can obtain a good sealing protection effect, the use reliability of the solar cell module is improved, and the service life of the solar cell module is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of solar cell technology, and in particular to an encapsulation structure and a multilayer composite solar panel module. Background Technology

[0002] In related technologies, solar panel modules, starting from the light-receiving side, sequentially consist of a transparent front substrate, an encapsulation material layer, solar cell elements, another encapsulation material layer, and a back protective sheet, enabling them to generate electricity by allowing sunlight to enter the solar cell elements. However, during transportation or installation, solar panel modules are inevitably subject to bending due to external forces. Once the bending reaches a certain extent, cracks or delamination can occur, preventing the cells from achieving proper sealing and protection, severely limiting the reliability and lifespan of the solar panel module.

[0003] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a packaging structure that effectively solves the technical defects of solar panel modules in the prior art, such as cracking or delamination caused by bending, thereby improving the reliability and service life of solar panel modules.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a packaging structure, characterized in that it includes a first packaging structure layer, the first packaging structure layer having a plurality of through holes, the plurality of through holes being able to penetrate the upper and lower surfaces of the first packaging structure layer.

[0006] As a preferred option, the first encapsulation structure layer is any one of a double-coated fluorinated backplane, a trifluorocarbon coated backplane, or a single-sided fluorinated backplane.

[0007] As a preferred embodiment, the through-hole includes at least a first row of through-holes and a second row of through-holes, the first row of through-holes and the second row of through-holes being arranged along the longitudinal spacing of the first packaging structure layer;

[0008] The first row of through holes has multiple first through holes arranged along the lateral spacing of the first packaging structure layer, and the second row of through holes has multiple second through holes arranged along the lateral spacing of the first packaging structure layer. The multiple first through holes and the multiple second through holes are arranged alternately.

[0009] As a preferred embodiment, a second through hole is located between two first through holes, and the second through hole and the two first through holes are arranged in an equilateral triangle structure.

[0010] As a preferred embodiment, the thickness of the first encapsulation structure layer is between 0.05mm and 0.35mm, the diameter of the through hole is between 0.5mm and 2.0mm, and the hole edge distance between two through holes is between 1mm and 5mm.

[0011] The beneficial effect of the encapsulation structure provided in this application is that, compared with the prior art, by setting a first encapsulation structure layer with several through holes, when the solar panel module is installed with the first encapsulation structure layer, the stress distribution of the first encapsulation structure layer can be changed through the through holes, so that the stress is redistributed around the holes, thereby reducing the phenomenon of stress concentration. This helps the first encapsulation structure layer to deform more evenly when bent, reducing the local excessive stress in the first encapsulation structure layer, ensuring that the first encapsulation structure layer will not crack or break due to excessive stress during bending, and thus ensuring that there will be no cracking or delamination between the layers of the solar panel module, ensuring that the cells can obtain good sealing protection, and improving the reliability and service life of the solar panel module.

[0012] This application also provides a multilayer composite solar panel module, including an encapsulation structure.

[0013] As a preferred embodiment, the multi-layer composite solar panel module includes a backsheet structure layer, a plurality of solar cells, a second encapsulation structure layer, and a front panel structure layer; the plurality of solar cells are disposed on the upper surface of the backsheet structure layer, the first encapsulation structure layer is disposed on the upper surface of the plurality of solar cells, the second encapsulation structure layer is disposed on the upper surface of the first encapsulation structure layer, and the front panel structure layer is disposed on the upper surface of the second encapsulation structure layer.

[0014] As a preferred embodiment, the backsheet structure layer and the battery cell are connected together by an adhesive film layer; the battery cell and the first encapsulation structure layer are connected together by an adhesive film layer; the first encapsulation structure layer and the second encapsulation structure layer are connected together by an adhesive film layer; and the second encapsulation structure layer and the front panel structure layer are connected together by an adhesive film layer.

[0015] The adhesive film layer can be any one of the following: transparent EVA film, white EVA film, conventional POE film, co-extruded POE film, PVDF film, SGP film, or acrylic film.

[0016] As a preferred embodiment, the adhesive film layers located on the upper and lower surfaces of the first encapsulation structure layer can be embedded in the through holes after being hot-melted and bonded.

[0017] Compared with existing technologies, embedding the plastic of the adhesive film layer into the through-holes makes the connection between the adhesive film layer and the first encapsulation structure layer more secure, providing stronger support and constraint during bending. This helps to improve the shape integrity of the solar cell module during bending and reduces the risk of delamination or cracking during bending. Moreover, when the first encapsulation structure layer is bent, the plastic embedded in the through-holes can play a supporting and buffering role, which can further improve the first encapsulation structure layer's resistance to stress concentration during bending and further enhance its bending performance stability.

[0018] As a preferred option, the upper surface of the front panel structural layer is printed with a textured structure using Teflon woven fabric or metal mesh.

[0019] As a preferred embodiment, the front panel structural layer is either an ETFE film or a PVF film. The textured structure includes recesses on the upper surface of the front panel structural layer and protrusions on the upper surface of the front panel structural layer. The spacing between a protrusion and a recess forms a mesh-like textured structure.

[0020] Compared with existing technologies, firstly, by setting a textured structure on the upper surface of the front panel structure layer, the angle of light incidence can be changed, allowing more light to enter the solar cell; when light enters at a larger angle, the textured structure can act as a light-concentrating structure, guiding the light to enter the solar cell more effectively, improving the light capture efficiency, increasing the light transmittance by 3%-5%, thereby increasing the short-circuit current of the solar cell and further improving the power generation efficiency.

[0021] Secondly, the textured structure can reduce the reflection and refraction of light on the front panel structure layer, which can not only eliminate glare and light pollution, but also cause some of the reflected light to be refracted and re-enter the surface of the solar cell, allowing more light to reach the solar cell; thereby improving the conversion efficiency of the cell and reducing the power loss of the solar cell module.

[0022] Thirdly, the textured structure can disperse external impacts and play a good buffering role; when the front panel structure layer is subjected to external impacts, it can better resist the impact force, reduce the risk of damage caused by local stress concentration, and thus improve the impact resistance of the solar panel module. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the layered structure of the multilayer composite solar panel module provided in the embodiments of this application;

[0025] Figure 2 yes Figure 1 The diagram shows an exploded view of the three-dimensional structure of a multi-layer composite solar panel module.

[0026] Figure 3 yes Figure 1 The top view of the first encapsulation structure layer in the multi-layer composite solar panel module shown.

[0027] The following are the labeling elements in the figure:

[0028] 100. Multi-layer composite solar panel module;

[0029] 10. Backsheet structure layer; 20. Battery cell; 30. Encapsulation structure layer; 31. First encapsulation structure layer; 32. Second encapsulation structure layer; 33. First through hole; 34. Second through hole; 40. Front panel structure layer; 41. Recessed dot; 42. Raised dot; 50. Adhesive film layer. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] Please refer to the following: Figures 1 to 3 The encapsulation structure provided in the embodiments of this application will now be described. Since the encapsulation structure is an encapsulation structure layer in the solar panel module, a multilayer composite solar panel module 100 will be used as an example in the embodiments of this application.

[0036] The multi-layer composite solar panel module 100 includes a back sheet structure layer 10, a plurality of solar cells 20 disposed on the upper surface of the back sheet structure layer 10, an encapsulation structure layer 30 disposed on the upper surface of the plurality of solar cells 20, a front panel structure layer 40 disposed on the upper surface of the encapsulation structure layer 30, and the upper surface of the front panel structure layer 40 is provided with a textured structure transferred by means of Teflon woven fabric or metal mesh.

[0037] Specifically, firstly, the uneven texture structure can change the angle of light incidence, allowing more light to enter the solar cell 20; when light enters at a larger angle, the uneven texture structure can concentrate the light, guiding the light to enter the solar cell 20 more effectively, improving the light capture efficiency, increasing the light transmittance by 3%-5%, increasing the short-circuit current of the solar cell 20, and further improving the power generation efficiency.

[0038] Secondly, the textured structure can reduce the reflection and refraction of light on the front panel structure layer 40, which can not only eliminate glare and light pollution, but also cause some of the reflected light to be refracted and re-enter the surface of the solar cell 20, so that more light can reach the solar cell 20; thereby improving the conversion efficiency of the cell and reducing the power loss of the solar cell module.

[0039] Thirdly, the textured structure can disperse external impacts and play a good buffering role; when the front panel structural layer 40 is subjected to external impacts, it can better resist the impact force, reduce the risk of damage caused by local stress concentration, and thus improve the impact resistance of the solar panel module.

[0040] In some embodiments, a textured structure is disposed on the upper surface of the front panel structure layer 40. The textured structure includes recesses 41 recessed on the upper surface of the front panel structure layer 40 and protrusions 42 protruding on the upper surface of the front panel structure layer 40. The spacing between a protrusion 42 and a recess 41 forms a mesh-like textured structure.

[0041] It should be noted that the transfer of the raised texture structure is achieved by heating the Teflon woven fabric or metal mesh and then hot-pressing it onto the front panel structural layer 40, so that the raised texture structure is transferred onto the upper surface of the front panel structural layer 40 through the Teflon woven fabric or metal mesh.

[0042] Specifically, the front panel structural layer 40 is either an ETFE film or a PVF film.

[0043] ETFE film, an ethylene-tetrafluoroethylene copolymer, is a high-performance fluoroplastic. Using ETFE film in the front panel structural layer 40 improves its light transmittance, contributing to increased power generation efficiency of the solar cell 20. Furthermore, it has broad spectral transmittance, effectively allowing light of different wavelengths to pass through. Simultaneously, ETFE material exhibits strong weather resistance, resisting the effects of ultraviolet radiation, temperature changes, wind, rain, and other environmental factors for extended periods without significant performance degradation. When used outdoors, there are no concerns about aging, discoloration, or cracking due to long-term exposure, maintaining a long service life and stable performance. Therefore, ETFE film is the preferred choice for the front panel structural layer 40.

[0044] PVF film is polyvinyl fluoride, a high-performance fluoropolymer film; the front panel structural layer 40 uses PVF film, which can protect photovoltaic modules from the effects of ultraviolet rays, moisture and chemical corrosion, and extend their service life.

[0045] In other embodiments, a plurality of battery cells 20 are arranged in a square array on the upper surface of the backplane structure layer 10 and connected in series or parallel by means of flexible flat cables, ordinary wires, or soldering. The encapsulation structure layer includes a first encapsulation structure layer 31 disposed on the upper surface of the plurality of battery cells 20 and a second encapsulation structure layer 32 disposed on the upper surface of the first encapsulation structure layer 31, and the front panel structure layer 40 is disposed on the upper surface of the second encapsulation structure layer 32.

[0046] Specifically, the first encapsulation structure layer 31 and the second encapsulation structure layer 32 are any one of a double-coated fluorine-containing structure backplate, a trifluorocarbon coating structure backplate, and a single-sided fluorine-containing structure backplate, and at least the first encapsulation structure layer 31 is provided with a plurality of through holes penetrating its upper and lower surfaces. By providing through holes in the first encapsulation structure layer 31 near the solar cells 20, the stress distribution of the first encapsulation structure layer 31 can be altered during bending. This redistributes stress around the holes, mitigating stress concentration and allowing for more uniform deformation during bending. This reduces localized excessive stress in the first encapsulation structure layer 31, preventing cracking or breakage due to excessive stress during bending. The first encapsulation structure layer 31 provides reliable isolation from external gases and liquids for the solar cells 20, improving the reliability and lifespan of the solar panel module. Simultaneously, it reduces the overall mass of the first encapsulation structure layer 31, decreasing the inertial force required during bending and making it easier to bend. Furthermore, the through holes enhance the flexibility of the first encapsulation structure layer 31, allowing localized areas to adapt more flexibly to strain requirements during bending.

[0047] Preferably, the through-holes include at least a first row of through-holes and a second row of through-holes, which are arranged along the longitudinal spacing of the first encapsulation structure layer 31. The first row of through-holes has a plurality of first through-holes 33 arranged along the transverse spacing of the first encapsulation structure layer 31, and the second row of through-holes has a plurality of second through-holes 34 arranged along the transverse spacing of the first encapsulation structure layer 31. The plurality of first through-holes 33 and the plurality of second through-holes 34 are staggered. A second through-hole 34 is located between two first through-holes 33, and the second through-hole 34 and the two first through-holes 33 are arranged in an equilateral triangle structure. This structure can improve the uniformity of stress distribution by utilizing the equilateral triangle structure formed between the first through-holes 33 and the second through-holes 34, so that the bending performance of each part of the first encapsulation structure layer 31 is consistent during bending.

[0048] More specifically, the thickness of the first encapsulation layer 31 is between 0.05 mm and 0.35 mm, preferably 0.27 mm. The diameter of the through-hole is between 0.5 mm and 2.0 mm, and the distance between the edges of two through-holes is between 1 mm and 5 mm. The through-hole can be any of the following: circular, rectangular, oblong, diamond, hexagonal, cross-shaped, triangular, elliptical, figure-eight, or cloverleaf. The shape of these through-holes can be adapted to meet actual production needs.

[0049] It should be noted that only the first encapsulation structure layer has through holes, while the second encapsulation structure layer does not. This structure ensures the bending performance of the solar panel module while improving the sealing effect of the solar cells, preventing external moisture and debris from entering the solar cells, thereby enhancing the protection of the solar cells.

[0050] In other embodiments, the backsheet structure layer 10 and the battery cell 20 are connected together by an adhesive film layer 50, the battery cell 20 and the first encapsulation structure layer 31 are connected together by an adhesive film layer 50, the first encapsulation structure layer 31 and the second encapsulation structure layer 32 are connected together by an adhesive film layer 50, and the second encapsulation structure layer 32 and the front panel structure layer 40 are connected together by an adhesive film layer 50. The adhesive film layer 50 is any one of transparent EVA film, white EVA film, conventional POE film, co-extruded POE film, PVDF film, SGP film or acrylic film.

[0051] Specifically, the adhesive film layer 50 located on the upper and lower surfaces of the first encapsulation structure layer 31, after being heat-melted bonded, allows the plastic of the adhesive film layer 50 to be embedded in the through-holes. By embedding the plastic of the adhesive film layer 50 into the through-holes, the connection between the adhesive film layer 50 and the first encapsulation structure layer 31 becomes stronger, providing stronger support and constraint during bending. This helps to improve the shape integrity of the solar panel module during bending and reduces the risk of delamination or cracking during bending. Moreover, when the first encapsulation structure layer 31 is bent, the plastic embedded in the through-holes can play a supporting and buffering role, further improving the first encapsulation structure layer 31's resistance to stress concentration during bending and further enhancing its bending performance stability.

[0052] Furthermore, when the front panel structural layer 40 is printed with a textured structure using Teflon woven fabric or metal mesh, the lower surface of the front panel structural layer 40 will form raised points 42 according to the positions of the recessed points 41, and the positions of the raised points 42 will form recessed points 41. This allows the plastic of the adhesive film layer 50 to be embedded in the recessed points 41 at the bottom of the front panel structural layer 40, while the raised points 42 on the lower surface of the front panel structural layer 40 are embedded in the plastic of the adhesive film layer 50, thereby improving the bonding strength between the front panel structural layer 40 and the adhesive film layer 50.

[0053] More specifically, the backsheet structural layer 10 is any one of a double-coated fluorinated structural backsheet, a trifluorocarbon coated structural backsheet, a single-sided fluorinated structural backsheet, a glass fiber reinforced polypropylene structural backsheet, an epoxy glass fiber prepreg structural backsheet, or an acrylic powder coated glass fiber structural backsheet.

[0054] The double-coated fluorinated structural backsheet uses PET polyester film as the middle layer, with fluorinated materials, such as PVDF (polyvinylidene fluoride) or FEVE (ethylene fluoride vinyl ether copolymer), coated on both sides, and then dried and cured to form a film. The double-coated fluorinated structural backsheet offers excellent weather resistance, effectively resisting the corrosion of the backsheet by environmental factors such as ultraviolet radiation, high temperature, and humidity, thereby extending its service life. Its good electrical insulation properties ensure the safety of the photovoltaic module during long-term use. It also possesses a certain degree of moisture barrier performance, preventing moisture from entering the module and causing corrosion of the cells and welds.

[0055] The trifluorocarbon coated backsheet consists of three layers: an outer trifluorocarbon coating, a middle PET polyester film, and an inner layer typically made of EVA or other adhesive materials. The outer trifluorocarbon coating exhibits excellent weather resistance and strong UV reflection and absorption capabilities, effectively blocking UV damage to the middle PET layer and the inner layer materials. It also possesses good water repellency and stain resistance, making the backsheet surface less prone to dust and dirt accumulation and maintaining good insulation performance. Furthermore, it exhibits a certain degree of abrasion resistance and corrosion resistance.

[0056] A single-sided fluorinated backsheet consists of an outer fluorinated material (such as PVF, PVDF, or THV), a middle PET matrix, and an inner EVA or other adhesive material. The outer fluorinated material provides excellent weather resistance, effectively resisting damage from environmental factors such as ultraviolet radiation, high temperatures, and humidity, and protecting the middle PET layer from aging. The middle PET layer provides the mechanical and insulation properties of the backsheet. The inner material primarily serves to bond with the encapsulation materials inside the module. Compared to double-sided fluorinated backsheets, its cost is relatively lower.

[0057] Fiberglass reinforced polypropylene structural backsheets are primarily composed of fiberglass as the reinforcing material, combined with polypropylene resin. They possess high mechanical strength and rigidity, effectively resisting external mechanical impacts and pressures, providing excellent support and protection for photovoltaic modules. They also exhibit good chemical corrosion resistance and dimensional stability; their insulation properties are excellent, and they have low water absorption, which can, to some extent, prevent moisture intrusion.

[0058] Epoxy fiberglass prepreg structural backsheets are made with epoxy resin as the matrix material and fiberglass cloth as the reinforcing material. They are manufactured through a prepreg process where epoxy resin is impregnated into the fiberglass cloth, followed by curing. They possess excellent mechanical properties, including high strength, high modulus, and good impact resistance, effectively protecting photovoltaic modules from external mechanical damage. They also exhibit good electrical insulation properties and heat resistance, maintaining stable performance over a wide temperature range.

[0059] Acrylic powder-coated fiberglass structural backsheets are made by uniformly coating acrylic powder onto the surface of fiberglass cloth using electrostatic spraying and other processes, followed by curing. The outer acrylic powder coating has good weather resistance and UV resistance, which can resist UV damage to the fiberglass cloth to a certain extent; it also has good chemical corrosion resistance and abrasion resistance; the fiberglass cloth provides the backsheet with high strength and good insulation properties.

[0060] More specifically, the first encapsulation structure layer 31 and the second encapsulation structure layer 32 are any one of a double-coated fluorinated backplane, a trifluorocarbon coated backplane, or a single-sided fluorinated backplane. That is to say, the first encapsulation structure layer 31 and the second encapsulation structure layer 32 have the same structure as when the backplane structure layer 10 adopts a double-coated fluorinated backplane, a trifluorocarbon coated backplane, or a single-sided fluorinated backplane, the difference being that the first encapsulation structure layer 31 is provided with a through-hole structure.

[0061] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A packaging structure, characterized in that, It includes a first encapsulation structure layer (31), which has a plurality of through holes that can penetrate the upper and lower surfaces of the first encapsulation structure layer (31). The through holes include at least a first row of through holes and a second row of through holes, the first row of through holes and the second row of through holes being arranged along the longitudinal spacing of the first encapsulation structure layer (31); The first row of through holes has multiple first through holes (33) arranged along the lateral spacing of the first encapsulation structure layer (31), and the second row of through holes has multiple second through holes (34) arranged along the lateral spacing of the first encapsulation structure layer (31). The multiple first through holes (33) and the multiple second through holes (34) are arranged alternately.

2. The packaging structure according to claim 1, characterized in that, The first encapsulation structure layer (31) is any one of a double-coated fluorine-containing structural backplate, a trifluorocarbon coated structural backplate, or a single-sided fluorine-containing structural backplate.

3. The packaging structure according to claim 1 or 2, characterized in that, A second through hole (34) is located between two first through holes (33), and the second through hole (34) and the two first through holes (33) are arranged in an equilateral triangle structure; The thickness of the first encapsulation structure layer (31) is between 0.05 mm and 0.35 mm, the diameter of the through hole is between 0.5 mm and 2.0 mm, and the hole edge distance between two through holes is between 1 mm and 5 mm.

4. A multi-layer composite solar panel module, characterized in that, Includes the packaging structure described in any one of claims 1-3.

5. The multi-layer composite solar panel module according to claim 4, characterized in that, The multi-layer composite solar panel module includes a backsheet structure layer (10), a number of solar cells (20), a second encapsulation structure layer (32), and a front panel structure layer (40); the number of solar cells (20) are disposed on the upper surface of the backsheet structure layer (10), the first encapsulation structure layer (31) is disposed on the upper surface of the number of solar cells (20), the second encapsulation structure layer (32) is disposed on the upper surface of the first encapsulation structure layer (31), and the front panel structure layer (40) is disposed on the upper surface of the second encapsulation structure layer (32).

6. The multi-layer composite solar panel module according to claim 5, characterized in that, The backsheet structure layer (10) and the battery cell (20) are connected together by an adhesive film layer (50). The battery cell (20) and the first encapsulation structure layer (31) are connected together by an adhesive film layer (50). The first encapsulation structure layer (31) and the second encapsulation structure layer (32) are connected together by an adhesive film layer (50). The second encapsulation structure layer (32) and the front panel structure layer (40) are connected together by an adhesive film layer (50). The film layer (50) is any one of transparent EVA film, white EVA film, POE film, co-extruded POE film, PVDF film, SGP film or acrylic film.

7. The multi-layer composite solar panel module according to claim 6, characterized in that, After the adhesive film layer (50) located on the upper and lower surfaces of the first encapsulation structure layer (31) is hot-melted and bonded, the plastic of the adhesive film layer (50) can be embedded in the through hole.

8. The multi-layer composite solar panel module according to any one of claims 5-7, characterized in that, The upper surface of the front panel structural layer (40) is printed with a textured structure by Teflon woven fabric or metal mesh.

9. The multi-layer composite solar panel module according to claim 8, characterized in that, The front panel structure layer (40) is either an ETFE film or a PVF film. The textured structure includes recesses (41) recessed on the upper surface of the front panel structure layer (40) and protrusions (42) protruding on the upper surface of the front panel structure layer (40). The spacing between a protrusion (42) and a recess (41) forms a mesh-like textured structure.

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