Lightweight packaging plate and photovoltaic module thereof

Abstract

The utility model discloses a light packaging sheet material and a photovoltaic assembly thereof. The light packaging sheet material comprises a hollow sheet material with an internal hollow structure. Wherein at least the left side edge and the right side edge of the hollow plate protrude and extend upwards relative to one surface of the hollow plate, so that the surface of the hollow plate forms a step surface; according to the utility model, on the basis of realizing the light photovoltaic module, the good enhanced protection of the photovoltaic module is realized, the industrial application of the hollow plate as a photovoltaic module packaging plate can be powerfully promoted, and the installation performance of the light photovoltaic module is further improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic modules, and in particular to a lightweight encapsulation board and its photovoltaic module. Background Technology

[0002] To reduce the weight of photovoltaic modules while ensuring their encapsulation performance, many technologies have proposed using honeycomb panels with a hollow structure to replace the traditional frame and liner structure of photovoltaic modules.

[0003] With the large-scale application of honeycomb panels with hollow structures, some technical problems have emerged. The applicant hopes to find technical solutions to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a lightweight encapsulation board and its photovoltaic module, which, while achieving lightweight photovoltaic modules, also provides excellent protection for the photovoltaic modules. This can strongly promote the industrial application of hollow boards as encapsulation boards for photovoltaic modules and further improve the installation performance of lightweight photovoltaic modules.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A lightweight encapsulation board includes a hollow board with an internal hollow structure; wherein at least the left and right sides of the hollow board extend upwardly relative to a surface of the hollow board, such that the surface of the hollow board forms a stepped surface.

[0007] Preferably, the thickness of the hollow sheet is 3-30mm; the left and right sides protrude upwards from the surface of the hollow sheet by 2-40mm, preferably 2-15mm; or preferably 5-25mm; or preferably 2-5mm; or preferably 5-15mm.

[0008] Preferably, the hollow sheet comprises a hollow sheet matrix extruded from a thermoplastic material, and at least one surface of the hollow sheet matrix is ​​provided with a reinforcing layer.

[0009] Preferably, the hollow sheet is formed by encapsulating and compositing at least two hollow sheet substrates stacked in different directions.

[0010] Preferably, the cross-sectional shape of the hollow structure is honeycomb type and / or polygonal type and / or circular type and / or triangular type and / or rectangular type and / or irregular type.

[0011] Preferably, a portion of the internal hollow structure is filled with a material core to enhance the internal hollow structure.

[0012] Preferably, the hollow sheet includes a hollow edge region, and a composite material frame or a metal frame is used to fix and connect part or all of the edge region to achieve structural reinforcement and protection of the edge region.

[0013] Preferably, a photovoltaic module includes a battery encapsulation body integrated with the battery and a lightweight encapsulation plate as described above; wherein the back of the battery encapsulation body is in encapsulation contact with the stepped surface, and the two sides of the battery encapsulation body are respectively in encapsulation contact with the left and right sides of the hollow plate.

[0014] Preferably, the battery package includes at least a front panel, a first adhesive film, a battery, and a second adhesive film, and the battery package is pre-encapsulated or encapsulated together with the lightweight packaging material.

[0015] Preferably, the hollow sheet includes a hollow edge region that is connected to its internal hollow structure; a reinforcing core material or rope is inserted through the edge region, and the rope also serves as a flexible support for mounting the photovoltaic module on the base surface.

[0016] It should be specifically noted that the front panel involved in this application can adopt a known photovoltaic module front panel structure, such as tempered glass, ultra-thin tempered glass, transparent PET film, or any other known front panel material; each encapsulation film layer can adopt any known encapsulation film structure in the prior art, and this application does not impose any special restrictions on it. For example, EVA (Polyethylene vinylacetate) film, POE film (belonging to polyolefin elastomer film), EPE film (a sandwich-type co-extruded structure film of EVA-POE-EVA), PVB (Polyvinyl Butyral Film), etc. can be used; the cells involved in this application can be any known photovoltaic cell string layer in the prior art, without limitation on its crystal type, material type, or cell shape, etc., all of which are within the scope of this application and can be arbitrarily varied.

[0017] The advantages and beneficial effects of this utility model are as follows: This application proposes using a hollow sheet material with an internal hollow structure as a lightweight encapsulation material. The left and right sides of the hollow sheet material extend upward relative to one surface of the hollow sheet material, so that the surface of the hollow sheet material forms a stepped surface. When applied to photovoltaic module encapsulation, the two sides of the battery encapsulation body can be respectively encapsulated and contacted with the left and right sides of the hollow sheet material. On the basis of realizing a lightweight photovoltaic module, it can achieve good enhanced protection for the photovoltaic module, which can strongly promote the industrial application of hollow sheet material as a photovoltaic module encapsulation material and further improve the installation performance of lightweight photovoltaic modules. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of photovoltaic module 1 in Embodiment 1 of this application;

[0019] Figure 2 This is an enlarged view of the structure at point A in Embodiment 1 of this application;

[0020] Figure 3 This is a partial cross-sectional structural diagram of the lightweight packaging plate in Embodiment 2 of this application;

[0021] Figure 4a This is a schematic diagram of the installation structure of photovoltaic module 1' in Embodiment 2 of this application;

[0022] Figure 4b yes Figure 4a Enlarged view of the structure at point B in the image;

[0023] Figure 5 This is a schematic diagram of the structure of the photovoltaic module in Embodiment 4 of this application;

[0024] Figure 6 This is a schematic diagram of the structure of the hollow sheet material through which the steel wire rope passes in the photovoltaic module provided in Embodiment 1 of this application in Embodiment 5 of this application;

[0025] Figure 7 yes Figure 6 A magnified schematic diagram of the local structure;

[0026] Figure 8a This is a schematic diagram of the photovoltaic module installation structure in Embodiment 6 of this application;

[0027] Figure 8b yes Figure 8a Enlarged view of the structure at point C. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1 and combined Figure 2 As shown, a lightweight encapsulation board includes a hollow board 10 with an internal hollow structure 11; wherein at least the left and right sides of the hollow board 10 extend upward relative to a surface of the hollow board, such that the surface of the hollow board 10 forms a stepped surface 12.

[0030] Preferably, in this embodiment, the thickness of the hollow sheet 10 is 3-30mm; the left and right sides protrude upwards from the surface of the hollow sheet 10 by 2-40mm, preferably 2-15mm; or preferably 5-25mm; or preferably 2-5mm; or preferably 5-15mm.

[0031] Preferably, in this embodiment, the hollow sheet 10 includes a hollow sheet matrix extruded from a thermoplastic material (any suitable thermoplastic material known to the public can be used, which is a conventional technical choice for those skilled in the art; specifically, preferably, in this embodiment, the thermoplastic material is polycarbonate (PC) material). At least one surface of the hollow sheet matrix is ​​provided with a reinforcing layer (not shown in the figure). It should be noted that the reinforcing layer can be a unidirectional tape or a composite material layer with a reinforcing effect (e.g., glass fiber or carbon fiber).

[0032] In this embodiment, the cross-sectional shape of the hollow structure 11 is polygonal. In other embodiments, it may be honeycomb and / or circular and / or triangular and / or rectangular and / or irregular. This embodiment does not limit it to this.

[0033] This embodiment 1 also proposes a photovoltaic module 1, including a battery encapsulation body 20 encapsulated and composited as one unit, and a lightweight encapsulation plate (i.e., a hollow plate 10) as described above in this embodiment; wherein, the back side of the battery encapsulation body 20 is in encapsulation contact with the stepped surface 12, and the two sides of the battery encapsulation body 20 are respectively encapsulated and contacted with the left and right sides of the hollow plate 10; preferably, in this embodiment, the battery encapsulation body 20 includes at least a front panel, a first encapsulating film, a battery, and a second encapsulating film, and the battery encapsulation body is pre-encapsulated and composited; of course, in other embodiments, the front panel, the first encapsulating film, the battery, the second encapsulating film, and the lightweight encapsulation plate can also be encapsulated and composited as one unit, which are conventional technical choices for those skilled in the art; specifically preferably, in this embodiment, the front panel is made of polycarbonate PC film or reinforced polyethylene terephthalate PET film.

[0034] Example 2: The remaining technical solutions of Example 2 are the same as those of Example 1, except that in Example 2, please refer to... Figure 3As shown, in this embodiment, the cross-sectional shape of the hollow structure 11' is circular, and a portion of the internal hollow structure 11' is filled with a material core 13 to enhance the internal hollow structure. In this embodiment, during fabrication, the material core 13 can be integrally formed with the hollow plate 10', or it can be subsequently inserted separately into the hollow plate 10' to achieve structural reinforcement. Please refer to further details. Figure 4a and Figure 4b As shown, since the lightweight encapsulation board provided in this embodiment achieves good structural reinforcement, the traditional mounting block structure 2 can be used to achieve rapid and stable installation of the lightweight photovoltaic module 1' on the base surface 3.

[0035] Example 3: The remaining technical solutions of Example 3 are the same as those of Example 1. The difference is that in Example 3, the hollow board is composed of at least two hollow board substrates stacked in different directions (e.g., cross-stacked at 45° or 90°), which makes up for the defect that a single hollow board substrate has strength in only one direction.

[0036] Example 4: The remaining technical solutions of Example 4 are the same as those of Example 1, except that in Example 4, please refer to... Figure 5 As shown, the hollow board 10a includes a hollow edge region 14. The edge region 14 is fixedly installed and connected by a metal frame 15 (or a composite material frame in other embodiments) (specifically, a mortise and tenon connection can be used, or other fixing connection methods can be used) to achieve structural reinforcement and protection of the edge region 14.

[0037] Example 5: The remaining technical solutions of Example 5 are the same as those of Example 1, except that, please refer to [link / reference needed] for further details. Figure 6 and Figure 7 As shown, in this embodiment 5, the hollow sheet 10b in the photovoltaic module 1 includes a hollow edge region 16, which is connected to the internal hollow structure; a steel wire rope 4 is inserted through the edge region 16, which also serves as a flexible support for the photovoltaic module 1 to be installed on the base surface; in other embodiments, a reinforcing core material can also be inserted through the edge region to achieve a structural reinforcement effect on the sheet.

[0038] Example 6: The remaining technical solutions of Example 6 are the same as those of Example 1, except that, please refer to [link / reference needed] for further details. Figure 8a and Figure 8b As shown in this embodiment 6, by setting the mounting rail 5 on the base surface 3, and then directly pasting (by tape or adhesive) the photovoltaic module 1 onto the mounting rail 5, the photovoltaic module can be quickly and conveniently installed on the base surface 3.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lightweight packaging board, characterized in that, The invention includes a hollow sheet material with an internal hollow structure; wherein at least the left and right sides of the hollow sheet material extend upwards relative to a surface of the hollow sheet material, such that the surface of the hollow sheet material forms a stepped surface.

2. The lightweight packaging material according to claim 1, characterized in that, The thickness of the hollow sheet is 3-30mm; the left and right sides protrude upwards from the surface of the hollow sheet by 2-40mm.

3. The lightweight packaging material according to claim 2, characterized in that, The left and right sides protrude upwards from the surface of the hollow sheet material by 2-15mm.

4. The lightweight packaging plate according to claim 2, characterized in that, The left and right sides protrude upwards from the surface of the hollow sheet material by 5-25mm.

5. The lightweight packaging plate according to claim 2, characterized in that, The left and right sides protrude upwards by 2-5mm relative to the surface of the hollow sheet.

6. The lightweight packaging material according to claim 2, characterized in that, The left and right sides protrude upwards from the surface of the hollow sheet material by 5-15mm.

7. The lightweight packaging material according to claim 1, characterized in that, The hollow sheet includes a hollow sheet substrate formed by extrusion of a thermoplastic material, and at least one surface of the hollow sheet substrate is provided with a reinforcing layer.

8. The lightweight packaging substrate according to claim 7, characterized in that, The hollow sheet is composed of at least two hollow sheet substrates stacked in different directions and encapsulated together.

9. The lightweight packaging substrate according to claim 7, characterized in that, The cross-sectional shape of the hollow structure is honeycomb type and / or polygonal type and / or circular type and / or triangular type and / or rectangular type and / or irregular type.

10. The lightweight packaging material according to claim 1, characterized in that, Part of the internal hollow structure is filled with a material core, thereby enhancing the internal hollow structure.

11. The lightweight packaging plate according to claim 1, characterized in that, The hollow sheet includes a hollow edge region, and a composite material frame or a metal frame is used to fix and connect part or all of the edge region to achieve structural reinforcement and protection of the edge region.

12. A photovoltaic module, characterized in that, The invention includes a battery encapsulation body that is encapsulated and integrated, and a lightweight encapsulation plate according to any one of claims 1-11; wherein the back side of the battery encapsulation body is in encapsulation contact with the stepped surface, and the two sides of the battery encapsulation body are respectively in encapsulation contact with the left side and right side of the hollow plate.

13. The photovoltaic module according to claim 12, characterized in that, The battery package includes at least a front panel, a first adhesive film, a battery, and a second adhesive film. The battery package is pre-encapsulated or encapsulated together with the lightweight packaging material.

14. The photovoltaic module according to claim 12, characterized in that, The hollow sheet includes a hollow edge region that is connected to its internal hollow structure; a reinforcing core material or rope is inserted through the edge region, and the rope also serves as a flexible support for mounting the photovoltaic module on the base surface.

Images