Transparent cover plate for photovoltaic module and photovoltaic module

Abstract

The utility model relates to the field of photovoltaic production, in particular to a transparent cover plate for a photovoltaic module and the photovoltaic module, which comprises a transparent substrate and an adhesive film strip. The transparent substrate comprises a substrate flat plate and barbs; the first surface of the substrate flat plate comprises a film placement area, and a plurality of barbs are arranged in the film placement area; and the adhesive film strip is arranged in the film placement area and is fixedly connected with the transparent substrate through the barb. According to the utility model, the transparent substrate and the adhesive film strip of the photovoltaic assembly are pre-assembled, the barb is arranged on the transparent substrate, and the adhesive film strip and the transparent substrate are firmly fixed by using the barb, so that the transparent substrate and the adhesive film strip are prevented from generating relative displacement and even falling off in the process of transporting the transparent cover plate and assembling the assembly; the alignment assembly of the adhesive film strip and the transparent substrate does not need to be carried out in the final assembly process of the photovoltaic module, so that the total time consumption of the assembly of the photovoltaic module is shortened, the production efficiency of the photovoltaic module is improved, and the overall adhesive film consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic production, in particular to a transparent cover plate for a photovoltaic component and a photovoltaic component. Background Art

[0002] With the development of technology, photovoltaics, as an important renewable energy source, is gaining increasing attention and favor from all walks of life. Photovoltaic modules are laminated structures formed by two cover sheets sandwiching solar cells with adhesive films. In existing technology, the solar cells, adhesive films, and cover sheets are fixed together through heating and pressure. Therefore, the cover sheets, adhesive films, and solar cells must be aligned and laid in sequence within a single process before being pressed. This process is time-consuming and has low production efficiency.

[0003] Therefore, how to achieve the pre-assembly of some structures in a photovoltaic module, shorten the assembly time of the entire photovoltaic module, and reduce the amount of adhesive film used is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to provide a transparent cover plate for a photovoltaic module and a photovoltaic module, so as to solve the problems in the prior art that the overall assembly of the photovoltaic module takes a long time and has low production efficiency.

[0005] In order to solve the above technical problems, the utility model provides a transparent cover for a photovoltaic module, comprising a transparent substrate and an adhesive film strip;

[0006] The transparent substrate includes a substrate plate and barbs;

[0007] The first surface of the base plate includes a film placement area, and a plurality of the barbs are arranged in the film placement area;

[0008] The adhesive film strip is arranged in the film placement area and is fixedly connected to the transparent substrate through the barbs.

[0009] Optionally, in the transparent cover plate for photovoltaic modules, the barbs are transparent barbs.

[0010] Optionally, in the transparent cover plate for photovoltaic modules, the barb is a hook-shaped structure obtained by local deformation of the base plate.

[0011] Optionally, in the transparent cover plate for a photovoltaic module, the transparent substrate is at least one of a glass substrate and a resin substrate.

[0012] Optionally, in the transparent cover for photovoltaic modules, the adhesive film strip is at least one of an EVA adhesive film strip, a POE adhesive film strip, an EPE adhesive film strip, an EP adhesive film strip, a PVB adhesive film strip, and a TPO adhesive film strip;

[0013] And / or, the weight of the adhesive film strip is in the range of 50 g to 400 g;

[0014] and / or, the thickness of the adhesive film strip is in the range of 0.05 mm to 0.45 mm, inclusive;

[0015] And / or, the width of the adhesive film strip is in the range of 5 mm to 150 mm, inclusive.

[0016] Optionally, in the transparent cover for a photovoltaic module, the adhesive film strips are arranged in parallel along a first direction;

[0017] or,

[0018] The adhesive film strips are arranged in a grid shape along a first direction and a second direction; the first direction intersects with the second direction.

[0019] Optionally, in the transparent cover plate for photovoltaic modules, the adhesive film strip is fixedly connected to the transparent substrate by at least one of friction connection, cold pressing connection and thermal bonding.

[0020] Optionally, in the transparent cover plate for a photovoltaic module, a projection size of the barb on the base plate does not exceed 0.05 mm;

[0021] And / or the height of the barb does not exceed 0.05 mm.

[0022] Optionally, in the transparent cover plate for a photovoltaic module, the height between the tip of the barb and the base plate is half the height of the barb.

[0023] A photovoltaic assembly, comprising the transparent cover plate as described above;

[0024] The first surface of the base plate of the transparent cover plate faces the inner side of the photovoltaic assembly.

[0025] The transparent cover plate for a photovoltaic module provided by the present invention includes a transparent base and a film strip; the transparent base includes a base plate and barbs; the first surface of the base plate includes a film placement area, and a plurality of barbs are provided in the film placement area; the film strip is provided in the film placement area and fixedly connected to the transparent base via the barbs. The present invention pre-assembles the transparent base and film strip of the photovoltaic module, provides barbs on the transparent base, and uses the barbs to firmly fix the film strip to the transparent base, thereby preventing the transparent base and film strip from relative displacement or even falling off during transportation and assembly of the transparent cover plate. There is no need to align the film strip and the transparent base during the final assembly of the photovoltaic module, thereby greatly shortening the total time required for photovoltaic module assembly, improving the production efficiency of the photovoltaic module, and reducing the overall amount of film used. The present invention also provides a photovoltaic module with the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is an exploded view of the structure of a specific embodiment of a transparent cover plate for a photovoltaic module provided by the utility model;

[0028] Figure 2 A partial top view of another specific embodiment of a transparent cover plate for a photovoltaic module provided by the present invention;

[0029] Figure 3 This is an exploded view of the structure of another specific embodiment of the transparent cover for photovoltaic modules provided by the present invention;

[0030] Figure 4 The present invention is a schematic structural cross-sectional view of a specific embodiment of a transparent cover plate for a photovoltaic module provided by the present invention.

[0031] In the figure, it includes 10-transparent substrate, 11-substrate plate, 12-hook, 20, 20a, 20b-film strip. DETAILED DESCRIPTION

[0032] To help those skilled in the art better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the embodiments described are only a portion of the present invention, not all of the embodiments. All other embodiments derived by those skilled in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0033] The core of the utility model is to provide a transparent cover for photovoltaic modules, a structural diagram of a specific embodiment of which is shown in FIG. Figures 1 to 4 As shown, it is called the specific embodiment 1, including a transparent substrate 10 and a film strip 20;

[0034] The transparent substrate 10 includes a substrate plate 11 and barbs 12;

[0035] The first surface of the base plate 11 includes a film placement area, and a plurality of the barbs 12 are arranged in the film placement area;

[0036] The adhesive film strip 20 is disposed in the film placement area and is fixedly connected to the transparent substrate 10 via the barbs 12 .

[0037] For reference Figure 1 , Figure 1 The figure is an exploded view of the structure of the transparent cover plate for photovoltaic modules.

[0038] Preferably, the barbs 12 are transparent barbs 12. By defining the barbs 12 as light-transmissive barbs 12, light shielding by the transparent cover can be further avoided, allowing more light to enter the surface of the solar cell in the photovoltaic module, thereby improving the photovoltaic module's photoelectric conversion efficiency.

[0039] It should be noted that the barb 12 can also be an opaque barb 12. Since the area of ​​the barb 12 on the substrate is very small, even if the substrate plate 11 is transparent and the barb 12 is opaque, the substrate as a whole is transparent and can still be considered as a transparent substrate 10.

[0040] As a specific embodiment, the barb 12 is a hook-shaped structure formed by local deformation of the base plate 11. That is, in this specific embodiment, the base plate 11 and the barb 12 are originally integrated, and through subsequent processing procedures, they are shaped into a flat base plate 11 and the barb 12 on the base plate 11. For example, the material is first processed into a flat shape as a whole, and then the barb 12 is formed on the first surface using a needle or other means, or the barb 12 is formed on the first surface using a mold pressurization method. The present invention does not limit this. Obviously, in this specific embodiment, the base plate 11 and the barb 12 are defined as an integrated structure, which has better connection stability between the two, while further reducing the complexity of the production process of the transparent cover, improving production efficiency and yield rate.

[0041] Furthermore, the transparent substrate 10 is at least one of a glass substrate and a resin substrate. Both the glass substrate and the resin substrate have good structural strength and excellent light transmittance, and can be selected according to actual needs. Of course, other types of transparent substrates 10 can also be used, and the present invention is not limited thereto.

[0042] Furthermore, the adhesive film strip 20 is at least one of an EVA adhesive film strip 20, a POE adhesive film strip 20, an EPE adhesive film strip 20, an EP adhesive film strip 20, a PVB adhesive film strip 20, and a TPO adhesive film strip 20. All of the above adhesive film strips 20 have sufficient viscosity and a large deformation coefficient while ensuring high transparency, and can help stabilize the photovoltaic module structure while providing protection for the solar cells therein. Of course, other types of adhesive film strips 20 can also be selected according to actual circumstances, and the present invention is not limited thereto.

[0043] The gram weight of the adhesive film strip 20 ranges from 50 grams to 400 grams, such as any one of 50.0 grams, 222.5 grams or 400.0 grams; the thickness of the adhesive film strip 20 ranges from 0.05 mm to 0.45 mm, including endpoint values, such as any one of 0.050 mm / 0.153 mm or 0.450 mm; the width of the adhesive film strip 20 ranges from 5 mm to 150 mm, including endpoint values, such as any one of 5.0 mm, 78.1 mm or 150.0 mm.

[0044] The above-mentioned parameter limitation of the adhesive film strip 20 is the optimal range obtained after a large number of theoretical calculations and actual tests. Within the above-mentioned range, the adhesive film strip 20 can well protect the solar cell sandwiched by the transparent cover after the lamination process of the photovoltaic module, and it will not be too thick to affect the performance of the module. At the same time, it can also be firmly connected with the barb 12 to avoid falling off. Of course, the above-mentioned parameters can also be adjusted accordingly according to actual conditions, and the present utility model does not limit them here.

[0045] In addition, the adhesive film strips 20 are arranged in parallel along the first direction. That is, all the adhesive film strips 20 are arranged in a "chuan" shape on the first surface, which has a simple structure and is convenient for production, and it is easy to control the overall thickness of the component.

[0046] Alternatively, as another specific embodiment, the adhesive film strips 20 are arranged in a grid pattern along the first direction and the second direction; the first direction intersects with the second direction. In this specific embodiment, the adhesive film strips 20 are divided into two categories, one category extends along the first direction, and the other category extends along the second direction. This setting method can greatly improve the connection stability between the adhesive film strips 20 and the transparent substrate 10. Of course, further, the first direction is perpendicular to the second direction, which can be referred to Figure 2 and Figure 3 , Figure 2 is the top view of the arrangement of the adhesive film strips 20 on the film placement area, Figure 3 is Figure 2 the exploded view of the structure of the corresponding transparent cover plate, Figure 2 and Figure 3 In [reference document], the adhesive film strips 20 extending along the first direction are represented by 20a, and the adhesive film strips 20 extending along the second direction are represented by 20b. When the first direction is perpendicular to the second direction, a relatively small amount of adhesive film strip 20 material can cover a larger area.

[0047] As a preferred embodiment, the adhesive film strips 20 are fixedly connected to the transparent substrate 10 by at least one of friction connection, cold press connection, and thermal bonding. The friction connection means that the adhesive film strips 20 are adhered to the transparent substrate 10 through friction, which can be that the adhesive film strips 20 slide on the transparent substrate 10 and are finally fixed, or the transparent substrate 10 slides on the adhesive film strips 20 and is finally fixed, or the adhesive film strips 20 and the transparent substrate 10 slide relatively and are finally fixed; the number of friction points starts from 1 and has no upper limit, which can be determined according to actual situations; the cold press connection is a connection method in which the points to be adhered are fixed on the transparent substrate 10 by applying a certain pressure; the thermal bonding is: by heating (the heating methods include infrared welding, electromagnetic welding, hot air blowing, metal contact, and other heating methods that can be realized), a part of the adhesive film strips 20 itself reacts to provide viscosity and adheres to the transparent substrate 10. Of course, other connection means can also be selected according to actual situations, and the present invention does not limit this here.

[0048] As a preferred embodiment, the projected dimension of the barb 12 on the base plate 11 does not exceed 0.05 mm; the height of the barb 12 does not exceed 0.05 mm.

[0049] The projected size of the barb 12 on the base plate 11 refers to the long axis length of the projection of the barb 12 on the base plate 11. The above parameters are the optimal ranges after a large number of theoretical calculations and actual tests. Within the above ranges, the barb 12 can have excellent connection and fixing performance with the film strip 20, and will not be too large or too high to damage the solar cell during the subsequent lamination process of the photovoltaic module.

[0050] Furthermore, the height of the tip of the barb 12 from the base plate 11 is half the height of the barb 12. When the height of the tip of the barb 12 from the base plate 11 is half the height of the barb 12, the barb 12 can be more firmly fixed to the adhesive film strip 20, and the production difficulty and cost are also low. Figure 4 , Figure 4 is a cross-sectional view of the transparent cover plate in the film placement area, Figure 4 In FIG. 5 , d represents the height between the tip of the barb 12 and the base plate 11 .

[0051] The transparent cover plate for a photovoltaic module provided by the present invention comprises a transparent substrate 10 and an adhesive film strip 20; the transparent substrate 10 comprises a substrate plate 11 and barbs 12; the first surface of the substrate plate 11 comprises a film placement area, wherein a plurality of barbs 12 are provided in the film placement area; the adhesive film strip 20 is provided in the film placement area and fixedly connected to the transparent substrate 10 via the barbs 12. The present invention pre-assembles the transparent substrate 10 and the adhesive film strip 20 of the photovoltaic module, and provides the barbs 12 on the transparent substrate. The barbs 12 are used to firmly secure the adhesive film strip 20 to the transparent substrate, thereby preventing relative displacement or even falling off of the transparent substrate 10 and the adhesive film strip 20 during transportation and assembly of the module. The alignment and assembly of the adhesive film strip 20 and the transparent substrate 10 are no longer required during the final assembly of the photovoltaic module, thereby significantly shortening the total time required for photovoltaic module assembly, improving the production efficiency of photovoltaic modules, and reducing the overall amount of adhesive film used.

[0052] The present invention further provides a photovoltaic assembly, which is referred to as a second embodiment. The photovoltaic assembly includes any of the transparent cover plates described above;

[0053] The first surface of the base plate 11 of the transparent cover plate faces the inner side of the photovoltaic module. The transparent cover plate for a photovoltaic module provided by the present invention comprises a transparent base 10 and an adhesive film strip 20; the transparent base 10 comprises a base plate 11 and barbs 12; the first surface of the base plate 11 comprises a film placement area, wherein a plurality of barbs 12 are provided in the film placement area; the adhesive film strip 20 is provided in the film placement area and fixedly connected to the transparent base 10 via the barbs 12. The present invention pre-assembles the transparent base 10 and the adhesive film strip 20 of the photovoltaic module, and provides the barbs 12 on the transparent substrate. The barbs 12 are used to firmly secure the adhesive film strip 20 to the transparent substrate, thereby preventing relative displacement or even falling off of the transparent base 10 and the adhesive film strip 20 during transportation and assembly of the transparent cover plate. The adhesive film strip 20 does not need to be aligned and assembled with the transparent base 10 during the final assembly of the photovoltaic module, thereby greatly shortening the total time required for photovoltaic module assembly and improving the production efficiency of photovoltaic modules.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Reference can be made to the descriptions of the identical or similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions of the methods.

[0055] It should be noted that, in this specification, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0056] The transparent cover plate for a photovoltaic module and the photovoltaic module provided by the present invention are described in detail above. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A transparent cover for a photovoltaic module, characterized in that: including a transparent substrate and a film strip; The transparent substrate includes a substrate plate and barbs; The first surface of the base plate includes a film placement area, and a plurality of the barbs are arranged in the film placement area; The adhesive film strip is arranged in the film placement area and is fixedly connected to the transparent substrate through the barbs.

2. The transparent cover for a photovoltaic module according to claim 1, wherein: The barb is a transparent barb.

3. The transparent cover for a photovoltaic module according to claim 2, wherein: The barb is a hook-shaped structure formed by local deformation of the base plate.

4. The transparent cover for a photovoltaic module according to claim 1, wherein: The transparent substrate is at least one of a glass substrate and a resin substrate.

5. The transparent cover for a photovoltaic module according to claim 1, wherein: The adhesive film strip is at least one of an EVA adhesive film strip, a POE adhesive film strip, an EPE adhesive film strip, an EP adhesive film strip, a PVB adhesive film strip and a TPO adhesive film strip; And / or, the weight of the adhesive film strip is in the range of 50 g to 400 g; and / or, the thickness of the adhesive film strip is in the range of 0.05 mm to 0.45 mm, inclusive; And / or, the width of the adhesive film strip is in the range of 5 mm to 150 mm, inclusive.

6. The transparent cover for a photovoltaic module according to claim 1, wherein: The adhesive film strips are arranged in parallel along a first direction; Alternatively, the adhesive film strips are arranged in a grid pattern along the first direction and the second direction; the first direction intersects with the second direction.

7. The transparent cover for a photovoltaic module according to claim 1, wherein: The adhesive film strip is fixedly connected to the transparent substrate by at least one of friction connection, cold pressing connection and thermal bonding.

8. The transparent cover for a photovoltaic module according to any one of claims 1 to 7, wherein: The projected size of the barb on the base plate does not exceed 0.05 mm; And / or the height of the barb does not exceed 0.05 mm.

9. The transparent cover for a photovoltaic module according to claim 8, wherein: The height of the tip of the barb from the base plate is half the height of the barb.

10. A photovoltaic module, characterized in that: The photovoltaic module comprises the transparent cover according to any one of claims 1 to 9; The first surface of the base plate of the transparent cover plate faces the inner side of the photovoltaic assembly.

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