photovoltaic modules

Abstract

This application relates to a photovoltaic module, including a laminate. The laminate comprises a front panel, solar cells, a fiberglass encapsulant composite layer, and a back panel, stacked sequentially from top to bottom. The solar cells generate electricity, while the front and back panels protect them. The fiberglass encapsulant composite layer comprises a glass fiber layer and encapsulant layers stacked on the upper and lower sides of the glass fiber layer, with the glass fiber layer and encapsulant layers fixedly connected. The photovoltaic module provided in this application adds a fiberglass encapsulant composite layer between the solar cells and the back panel. The base layer of the fiberglass encapsulant composite layer is a glass fiber layer. As an inorganic polymer material, the glass fiber layer has a dense molecular arrangement, effectively absorbing and dispersing the impact energy of external factors, thereby significantly improving the photovoltaic module's impact resistance.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to a photovoltaic module. Background Technology

[0002] Conventional photovoltaic (PV) modules cannot withstand strong impacts, such as those from hail. Due to varying regional climates, especially in areas with extremely harsh climates where hail is frequent, PV modules installed in these regions may be damaged by the impact of hail, leading to power plant shutdowns and severe economic losses. Utility Model Content

[0003] Therefore, it is necessary to provide an impact-resistant photovoltaic module.

[0004] A photovoltaic module includes a laminate comprising a front panel, solar cells, a fiberglass encapsulant composite layer, and a back panel stacked sequentially from top to bottom; wherein the solar cells are used to generate electricity, and the front panel and the back panel are used to protect the solar cells; the fiberglass encapsulant composite layer comprises a glass fiber layer and encapsulant layers stacked on the upper and lower sides of the glass fiber layer, wherein the glass fiber layer and the encapsulant layers are fixedly connected.

[0005] In one embodiment, the glass fiber layer and the adhesive film layer are respectively provided with a first connecting portion and a second connecting portion on their surfaces facing each other, and the glass fiber layer and the adhesive film layer are fixedly connected by the first connecting portion and the second connecting portion.

[0006] In one embodiment, one of the first connecting part and the second connecting part is a hook with an opening on the edge, and the other is a ring with a through hole inside. The hook can enter the through hole to fix the first connecting part and the second connecting part together.

[0007] In one embodiment, the ring is disposed on the glass fiber layer, and the hook is disposed on the adhesive film layer.

[0008] In one embodiment, the adhesive layer located between the glass fiber layer and the battery cell is defined as the first adhesive layer, and the adhesive layer located between the glass fiber layer and the back panel is defined as the second adhesive layer. The first adhesive layer is connected to the battery cell by chemical cross-linking bonding, and the second adhesive layer is connected to the back panel by chemical cross-linking bonding.

[0009] In one embodiment, the thickness of the fiberglass film composite layer is 1 mm to 3 mm.

[0010] In one embodiment, the back panel is a fiberglass board that can improve the impact resistance of the laminate.

[0011] In one embodiment, the upper surface of the front panel is covered with a rigid film to improve the impact resistance of the laminate.

[0012] In one embodiment, the photovoltaic module further includes a frame disposed at the edge of the laminate, the frame having a support portion for supporting the bottom edge of the laminate, the edge of the support portion extending toward the center of the laminate to form an extension portion for supporting part of the laminate.

[0013] In one embodiment, the length of the support portion is H1, and the length of the extension portion is H2, wherein H1 and H2 satisfy: 1 / 6 ≤ H2 / H1 ≤ 1 / 4.

[0014] In one embodiment, the photovoltaic module further includes a frame and corner brackets surrounding the edge of the laminate. The frame includes an adjacent first frame and a second frame, and the corners of the first frame and the second frame are connected by the corner brackets. The corner brackets have a width of 7mm to 10mm.

[0015] Compared with the prior art, the photovoltaic module provided in this application adds a glass fiber film composite layer between the cell and the back panel. The base layer of the glass fiber film composite layer is a glass fiber layer. As an inorganic polymer material, the glass fiber layer has a dense molecular arrangement inside, which can effectively absorb and disperse the impact energy of external factors, thereby significantly improving the impact resistance of the photovoltaic module. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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.

[0017] Figure 1 This is a schematic diagram of a photovoltaic module disassembled according to an embodiment of this application; Figure 2 This is a schematic diagram of a photovoltaic module disassembled according to another embodiment of this application; Figure 3 This is a schematic diagram of the fiberglass adhesive film composite layer in an unconnected state according to an embodiment of this application; Figure 4 for Figure 3 A schematic diagram of the glass fiber adhesive film composite layer in the connected state; Figure 5 This is a schematic diagram of the border in one embodiment of this application; Figure 6 This is a schematic diagram of a corner code in one embodiment of this application.

[0018] Attached image label: 1. Photovoltaic module; 10. Laminated component; 11. Front panel; 12. Battery cell; 13. Fiberglass film composite layer; 131. Fiberglass layer; 132. Film layer; 133. Hook body; 134. Ring body; 14. Back panel; 15. Rigid film; 16. Encapsulating adhesive film layer; 20. Border; 21. Support; 22. Extension; 30. Corner code. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0020] 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 the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0021] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0024] Please see Figures 1 to 6 This application provides a photovoltaic module 1, including a laminate 10. The laminate 10 includes a front panel 11, a solar cell 12, a fiberglass film composite layer 13, and a back panel 14, which are stacked sequentially from top to bottom. The solar cell 12 is used to generate electricity and is the core part of the photovoltaic module 1. The front panel 11 and the back panel 14 are used to protect the solar cell 12. The fiberglass film composite layer 13 includes a glass fiber layer 131 and film layers 132 stacked on the upper and lower sides of the glass fiber layer 131, and the glass fiber layer 131 and the film layers 132 are fixedly connected.

[0025] It is understood that the photovoltaic module 1 provided in this embodiment adds a fiberglass film composite layer 13 between the solar cell 12 and the back panel 14. The base layer of the fiberglass film composite layer 13 is a glass fiber layer 131. As an inorganic polymer material, the glass fiber layer 131 has a dense molecular arrangement, which can effectively absorb and disperse the impact energy of external factors, thereby significantly improving the impact resistance of the photovoltaic module 1. Moreover, as a composite material made by three-dimensionally combining the glass fiber layer 131 and the film layer 132, the fiberglass film composite layer 13 can not only achieve cross-linking with the solar cell 12, but also increase the rigidity of the back of the photovoltaic module 1 without affecting the power generation efficiency of the solar cell 12. When the photovoltaic module 1 is subjected to impacts such as hail, the fiberglass film composite layer 13 can reduce the deformation of the front of the photovoltaic module 1, thereby preventing the front panel 11 of the photovoltaic module 1 from cracking.

[0026] It should be explained that the substrate of the glass fiber layer 131 is glass fiber. As an inorganic polymer material, glass fiber has a dense molecular arrangement, which can significantly improve the strength of the back side. Types of glass fiber include glass fiber mesh and glass fiber mat.

[0027] Specifically, fiberglass mesh is made from alkali-resistant woven fiberglass fabric (such as fiberglass mesh) as the base material, which is then heat-set at high temperatures with alkali-resistant liquid and reinforcing agents. The woven fiberglass fabric itself is made from alkali-free fiberglass yarn (mainly composed of silicates with good chemical stability) woven with a special weave structure—leno weave. This gives the fiberglass mesh excellent alkali resistance, flexibility, and high tensile strength in both warp and weft directions, making it widely used in interior and exterior building walls to provide insulation, waterproofing, fireproofing, and crack resistance.

[0028] Fiberglass mat is a sheet-like product made by bonding continuous or chopped filaments together in an undirected manner through chemical adhesives or mechanical action.

[0029] The material that forms a three-dimensional bond with the glass fiber layer 131 is the adhesive film layer 132. The adhesive film layer 132 can be made of EVA, EPE, POE, etc. Thus, the glass fiber adhesive film composite layer 13 can not only bond the solar cell 12 and the back panel 14 together, but also improve the back strength of the photovoltaic module 1.

[0030] Schematic illustration: The front panel 11 is a colorless and transparent glass plate to avoid affecting the transmission of sunlight between the front panel 11 and the solar cell 12, thus not affecting the power generation efficiency of the solar cell 12. Furthermore, the glass front panel 11 also protects the internal structure of the laminate 10 (such as the solar cell 12). The front panel 11 increases the stress on the surface of the solar cell 12, making it more resistant to hail impacts. Understandably, the thickness of the glass plate should not be too large, otherwise it will increase the overall weight of the photovoltaic module 1, increasing the difficulty and cost of transporting it. Schematic illustration: The thickness of the glass plate is 2mm to 4mm.

[0031] For illustrative purposes only, please refer to the following: Figure 2 An encapsulating film layer 16 is also provided between the front panel 11 and the solar cell 12. The encapsulating film layer 16 is made of adhesive film. In this way, the encapsulating film layer 16 can play a cross-linking role in connecting the solar cell 12 and the front panel 11 together, thereby increasing the light transmittance of the glass panel and thus improving the power generation of the solar cell 12. However, considering the impact of the encapsulating film on the light transmittance of the front side of the photovoltaic module 1, the encapsulating film layer 16 should not be designed too much and can refer to the existing technology.

[0032] In one embodiment, the glass fiber layer 131 and the adhesive film layer 132 have a first connecting portion and a second connecting portion respectively on their surfaces facing each other, and the glass fiber layer 131 and the adhesive film layer 132 are fixedly connected through the first connecting portion and the second connecting portion. In this way, the glass fiber layer 131 and the adhesive film layer 132 can be compositely connected to form a glass fiber adhesive film composite layer 13.

[0033] Indicatively, the first and second connecting parts can be connected together through physical interlocking or chemical bonding. Specifically, the physical interlocking method can be a biomimetic hook and loop fastener structure. The following explanation uses the example of the first connecting part being located on the adhesive film layer 132. The first connecting part consists of densely packed micro-hooks, formed by adding special loop yarn during the weaving of the fiberglass cloth, and then creating a pile surface through a "pilling" or "brushing" process, followed by cutting or heat setting to form micro-hooks. Meanwhile, the second connecting part is a dense ring-shaped or pile-like structure, formed by adding a very thin layer of specially treated non-woven fabric or woven material to the surface of the fiberglass layer 131 to create a ring surface. When the two are pressed together, the micro-hooks of the first connecting part hook onto the ring surface of the second connecting part, creating a very strong bonding force, thereby connecting the first and second connecting parts together. Another method of physical interlocking is as follows: the adhesive film layer 132 is provided with a first connecting part, which is a regular protrusion, nodule or coil and other concave-convex structure formed on the surface of the adhesive film layer 132 using "3D weaving" or "stitching" technology; at this time, the second connecting part is the adhesive film molten on the surface of the glass fiber layer 131. In this way, when heated and pressurized for lamination, the molten adhesive film will flow and embed into the concave-convex structure on the surface of the adhesive film layer 132. After curing, the adhesive film is mechanically locked by the concave-convex structure of the first connecting part like countless "rivets".

[0034] Schematic illustration: The chemical bonding can be achieved by: providing a first connecting portion on the adhesive film layer 132, i.e., coating the adhesive film layer 132 with a coupling agent (such as a silane coupling agent). One end of the coupling agent molecule has an inorganic-loving group that can firmly bond with SiO2 in the adhesive film layer 132; the other end of the coupling agent molecule has an organic-loving (such as epoxy, polyester) active group (such as amino, epoxy group). Then, a second connecting portion is provided on the glass fiber layer 131, i.e., coating the surface of the glass fiber layer 131 near the adhesive film layer 132 with a corresponding active group, such as epoxy resin. Under pressure and heating conditions, the active groups on the coupling agent in the first connecting portion react chemically with the active groups in the second connecting portion, forming a strong and durable covalent bond, thus connecting the first and second connecting portions together.

[0035] In one embodiment, see Figure 3 and Figure 4One of the first connecting part and the second connecting part is a hook 133 with an opening on the edge, and the other is a ring 134 with a through hole inside. The hook 133 can enter the through hole to fix the first connecting part and the second connecting part, thereby combining the glass fiber layer 131 and the adhesive film layer 132 into a glass fiber adhesive film composite layer 13.

[0036] Schematic illustration: the first connecting portion is disposed on the adhesive film layer 132, and the second connecting portion is disposed on the fiberglass layer 131; the first connecting portion is a hook 133, and the second connecting portion is a loop 134. In this embodiment, as... Figure 3 The diagram shows the unconnected state of the glass fiber layer 131 and the adhesive film layers 132 located on its upper and lower sides in this embodiment. Figure 4 The diagram shows the connection state of the glass fiber layer 131 and the adhesive film layer 132 to form a glass fiber adhesive film composite layer 13.

[0037] Specifically, the fiberglass adhesive film composite layer 13 employs physical bonding. Simply press the adhesive film layers 132 on the upper and lower sides of the fiberglass layer 131 against the fiberglass layer 131. The hooks 133 on the upper and lower adhesive film layers 132 can then enter the through-holes of the rings 134 on the corresponding surfaces of the fiberglass layer 131 through their openings. The hooks 133 and rings 134 hook together, thus connecting the fiberglass layer 131 and the adhesive film layers 132 on its upper and lower sides from an unconnected state to a connected state, forming the composite fiberglass adhesive film composite layer 13. (See reference...) Figure 3 and Figure 4 Thus, the manufacturing process of the fiberglass adhesive film composite layer 13 is simple, requiring only a simple press on the machine to complete the operation. The composite state of the fiberglass adhesive film composite layer 13 is reversible; it can be restored to an unconnected state, allowing the fiberglass layer 131 to be used separately from the two adhesive film layers 132, thereby expanding the applicable scenarios for the fiberglass adhesive film composite layer 13.

[0038] Furthermore, traditional composite material manufacturing methods typically involve mixing various materials in a specific ratio, heating and melting them in a twin-screw extruder to form the composite material. However, this method is cumbersome, and the heating and melting of the materials can generate polluting gases, leading to environmental pollution. In contrast, the fiberglass film composite layer 13 in this embodiment does not require high-temperature melting and lamination by a machine, making it environmentally friendly, saving manufacturing steps, and reducing costs.

[0039] Furthermore, the ring 134 is disposed on the glass fiber layer 131, and the hook 133 is disposed on the adhesive film layer 132. It can be understood that when separating the connected glass fiber adhesive film composite layer 13 into the glass fiber layer 131 and the adhesive film layer 132, it is only necessary to tear the adhesive film layer 132 in the direction away from the glass fiber layer 131. In this way, the glass fiber adhesive film composite layer 13 can be separated from the connected state to the non-connected state more easily.

[0040] Furthermore, the hook body 133 and the adhesive film layer 132 are integrally formed, and the ring body 134 and the fiberglass layer 131 are integrally formed, thereby simplifying the manufacturing process of the fiberglass layer 131 and the adhesive film layer 132.

[0041] In one embodiment, the adhesive film layer 132 located between the glass fiber layer 131 and the battery cell 12 is defined as the first adhesive film layer, and the adhesive film layer 132 located between the glass fiber layer 131 and the back panel 14 is defined as the second adhesive film layer. The first adhesive film layer is connected to the battery cell 12 by chemical cross-linking bonding, and the second adhesive film layer is connected to the back panel 14 by chemical cross-linking bonding. It should be explained that both the first and second adhesive film layers are adhesive. During the process of laminating the front panel 11, the battery cell 12, the glass fiber adhesive film composite layer 13, and the back panel 14 into the laminate 10, the first and second adhesive film layers will melt under the high temperature of lamination, thereby cross-linking with the battery cell 12 or the back panel 14. In this way, the first adhesive film layer can cross-link with the battery cell 12 using its own adhesiveness, and the second adhesive film layer can also cross-link with the back panel 14 using its own adhesiveness, thereby simplifying the manufacturing process of the laminate 10.

[0042] Furthermore, the thickness of the fiberglass encapsulant composite layer 13 is between 1 mm and 3 mm. It is understandable that if the thickness of the fiberglass encapsulant composite layer 13 is less than 1 mm, the manufacturing bottleneck cannot be overcome; if the thickness of the fiberglass encapsulant composite layer 13 is greater than 3 mm, it will be too thick, thus increasing the weight of the photovoltaic module 1. Therefore, the thickness of the fiberglass encapsulant composite layer 13 in this embodiment is just right. Thus, the fiberglass encapsulant composite layer 13 can improve the impact resistance of the photovoltaic module 1 without increasing its weight.

[0043] In one embodiment, the back panel 14 is a glass plate, which makes the cost of the photovoltaic module 1 more economical.

[0044] In another embodiment, the back panel 14 is a fiberglass board that improves the impact resistance of the laminate 10. It is understood that, compared to traditional glass back panels, the addition of a fiberglass structure within the fiberglass board further enhances the strength of the back panel 14 in the photovoltaic module 1, making the module less prone to deformation after being impacted by hail, thus preventing the front panel 11 from shattering. Because this embodiment uses a stronger and more deformation-resistant fiberglass board, it enhances the stiffness of the back side of the photovoltaic module 1, achieving deformation resistance and increasing the impact resistance of the photovoltaic module 1. It should also be noted that the fiberglass board in this embodiment is a multi-layered back panel material. Specifically, the fiberglass board includes one layer of fiberglass and two layers of weather-resistant resin. The fiberglass layer 131 provides mechanical and electrical insulation properties. Schematic, the fiberglass layer 131 can use a mesh and surface mat structure. The weather-resistant resin structure is an extruded planar structure that improves the weather resistance of the fiberglass board.

[0045] In one embodiment, see Figure 2 The upper surface of the front panel 11 is covered with a rigid film 15 to improve the impact resistance of the laminate 10. Thus, when the rigid film 15 is attached to the upper surface of the front panel 11, it can reduce the impact force of impacting objects (such as hail) on the solar cell 12, thereby improving the impact resistance of the photovoltaic module 1 in this embodiment. Schematic, the rigid film 15 is a polycarbonate film, made from polycarbonate resin through processes such as extrusion, calendering, or casting. The polycarbonate film has high transparency (light transmittance up to 90%), impact resistance (can withstand external force without deformation), high temperature resistance (operating temperature range -100℃ to 135℃), and excellent weather resistance (stable UV resistance). Its thickness is typically between 0.15mm and 3mm. Thus, the polycarbonate film neither increases the weight of the photovoltaic module 1 nor affects the light path from the outside of the rigid film 15 to the surface of the solar cell 12, meaning it does not affect the power generation efficiency of the solar cell 12.

[0046] In one embodiment, see Figure 5 The photovoltaic module 1 also includes a frame 20 disposed at the edge of the laminate 10. The frame 20 has a support portion 21 for supporting the bottom edge of the laminate 10. The edge of the support portion 21 extends toward the center of the laminate 10 to form an extension portion 22, which supports the portion 21 on the laminate 10. In this way, the extension portion 22 increases the support area of ​​the frame 20 for the photovoltaic module 1, enhances the load-bearing capacity of the frame 20, and reduces the possibility of deformation of the photovoltaic module 1 when it is impacted by other objects, thereby improving the impact resistance of the photovoltaic module 1.

[0047] Preferably, the length of the support portion 21 is H1, and the length of the extension portion 22 is H2, where H1 and H2 satisfy: 1 / 6 ≤ H2 / H1 ≤ 1 / 4. It is understood that if H2 / H1 > 1 / 4, the weight of the entire photovoltaic module 1 would increase excessively, thus affecting production and transportation costs; if H2 / H1 is less than 1 / 6, the extension portion 22 is too short and cannot effectively increase the support for the photovoltaic module 1. Therefore, 1 / 6 ≤ H2 / H1 ≤ 1 / 4 is just right. In this way, the extension portion 22 can effectively enhance the load-bearing capacity of the frame 20, thereby improving the impact resistance of the photovoltaic module 1.

[0048] In one embodiment, the photovoltaic module 1 further includes a frame 20 and corner brackets 30 surrounding the edge of the laminate 10. The frame 20 includes adjacent first and second frames, and the corners of the first and second frames are connected by corner brackets 30. The width K of the corner brackets 30 is 7mm to 10mm, and the width of the corner brackets 30 can be found in [reference needed]. Figure 6 As shown in the diagram. It is understood that the width of existing corner brackets is generally around 6.5mm. In this embodiment, the width of corner bracket 30 is greater than that of existing corner brackets. Since corner bracket 30 is located within the cavity at the corner of the frame 20 to connect adjacent first and second frames, the widened corner bracket 30 increases the support for the frame 20, thereby enhancing the strength at the connection between the first and second frames, and ultimately improving the impact resistance of the photovoltaic module 1. It should also be explained that the first and second frames are two interconnected frames 20; the connection method between the first frame, the second frame, and the corner bracket 30 can be performed according to existing methods, which will not be elaborated upon in this application.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A photovoltaic module, characterized in that, The system includes a laminate (10), which comprises a front panel (11), a battery cell (12), a fiberglass film composite layer (13), and a back panel (14) stacked sequentially from top to bottom. The battery cell (12) is used to generate electricity, and the front panel (11) and the back panel (14) are used to protect the battery cell (12). The fiberglass film composite layer (13) comprises a glass fiber layer (131) and film layers (132) stacked on the upper and lower sides of the glass fiber layer (131), and the glass fiber layer (131) and the film layer (132) are fixedly connected. The glass fiber layer (131) and the adhesive film layer (132) are respectively provided with a first connecting part and a second connecting part on their surfaces facing each other, and the glass fiber layer (131) and the adhesive film layer (132) are fixedly connected by the first connecting part and the second connecting part; One of the first connecting part and the second connecting part is a hook (133) with an opening on the edge, and the other is a ring (134) with a through hole inside. The hook (133) can enter the through hole to fix the first connecting part and the second connecting part.

2. The photovoltaic module according to claim 1, characterized in that, The ring (134) is disposed on the glass fiber layer (131), and the hook (133) is disposed on the adhesive film layer (132).

3. The photovoltaic module according to claim 1, characterized in that, The adhesive film layer (132) located between the glass fiber layer (131) and the battery cell (12) is defined as the first adhesive film layer, and the adhesive film layer (132) located between the glass fiber layer (131) and the back panel (14) is defined as the second adhesive film layer. The first adhesive film layer is connected to the battery cell (12) by chemical cross-linking bonding, and the second adhesive film layer is connected to the back panel (14) by chemical cross-linking bonding.

4. The photovoltaic module according to any one of claims 1 to 3, characterized in that, The thickness of the fiberglass film composite layer (13) is 1 mm to 3 mm.

5. The photovoltaic module according to any one of claims 1 to 3, characterized in that, The back panel (14) is a fiberglass board that can improve the impact resistance of the laminate (10).

6. The photovoltaic module according to any one of claims 1 to 3, characterized in that, The upper surface of the front panel (11) is covered with a rigid film (15) to improve the impact resistance of the laminate (10).

7. The photovoltaic module according to any one of claims 1 to 3, characterized in that, The photovoltaic module (1) further includes a frame (20) disposed at the edge of the laminate (10). The frame (20) has a support portion (21) for supporting the bottom edge of the laminate (10). The edge of the support portion (21) extends toward the center of the laminate (10) to form an extension portion (22). The extension portion (22) is used to support the portion (21) to separate the laminate (10).

8. The photovoltaic module according to claim 7, characterized in that, The length of the support part (21) is H1, and the length of the extension part (22) is H2. H1 and H2 satisfy: 1 / 6≤H2 / H1≤1 / 4.

9. The photovoltaic module according to any one of claims 1 to 3, characterized in that, The photovoltaic module (1) also includes a frame (20) and a corner bracket (30) surrounding the edge of the laminate (10). The frame (20) includes an adjacent first frame and a second frame. The corners of the first frame and the second frame are connected by the corner bracket (30). The width of the corner bracket (30) is 7mm to 10mm.

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