Packaging plate structure of photovoltaic module and photovoltaic module

Abstract

The utility model discloses a packaging plate structure of a photovoltaic module and the photovoltaic module. The packaging plate structure comprises a first fiber material reinforced polymer sheet, a waterproof layer and a second fiber material reinforced polymer sheet which are laminated up and down and are compounded into a whole, the front plate packaging structure has excellent water vapor penetration prevention, water resistance and insulation performance, can be directly contacted and packaged with a battery string layer when being used as the front plate packaging structure of the photovoltaic module, does not need to use the existing packaging adhesive film structure, and is favorable for guaranteeing the service life of the photovoltaic module.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic components, and in particular relates to a packaging plate structure of a photovoltaic component and a photovoltaic component. Background Art

[0002] The existing packaging structure of photovoltaic modules is usually: front panel / film / cell / film / back panel; specifically, the front panel is usually made of glass fiber reinforced material or PET type weather-resistant material. The glass fiber reinforced material of the former has a certain fire resistance, and the PET type weather-resistant material of the latter has a certain water resistance, but it is difficult for one material to take into account both fire resistance and water resistance while ensuring the cost; secondly, the currently used film has a low melting point and is a flammable substance with no fire resistance, and has a relatively high water vapor permeability, especially the edge of the photovoltaic module is prone to water vapor entering; therefore, the current photovoltaic module packaging structure is difficult to take into account the performance requirements of water resistance, fire resistance and insulation at the same time, especially when the water vapor permeability is relatively high, which leads to the performance degradation of the photovoltaic module and reduces the service life of the photovoltaic module.

[0003] Therefore, the applicant hopes to seek technical solutions to solve the above technical problems. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide a packaging plate structure for a photovoltaic module and a photovoltaic module, which have excellent water vapor penetration resistance, water resistance and insulation performance. When it is used as the front plate packaging structure of a photovoltaic module, it can be directly contacted and packaged with the battery string layer without using the existing packaging film structure, which is beneficial to ensure the service life of the photovoltaic module.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A packaging plate structure for a photovoltaic component comprises a first fiber material reinforced polymer sheet, a water-blocking layer and a second fiber material reinforced polymer sheet which are stacked up and down and composited into one.

[0007] Preferably, the first fiber material reinforced polymer sheet and the second fiber material reinforced polymer sheet are in a symmetrical or asymmetrical structure relative to the water blocking layer.

[0008] Preferably, the composition of the first fiber material reinforced polymer sheet is the same as the composition of the second fiber material reinforced polymer sheet.

[0009] Preferably, the thickness of the first fiber material reinforced polymer sheet is in the range of 0.2-5 mm; and / or the thickness of the second fiber material reinforced polymer sheet is in the range of 0.2-5 mm.

[0010] Preferably, the first fiber material reinforced polymer sheet and / or the second fiber material reinforced polymer sheet adopts a prepreg of fiber cloth and polymer, or adopts a single-layer structure or a multi-layer laminated structure of a continuous fiber reinforced polymer unidirectional tape.

[0011] Preferably, the fiber cloth is glass fiber cloth, and the fibers are glass fibers; and / or the polymer is made of thermoplastic resin material, preferably polyester material, polypropylene material or polyether material.

[0012] Preferably, the thickness of the water-blocking layer is in the range of 0.02-1 mm.

[0013] Preferably, the water-blocking layer comprises a water-blocking film layer and / or a water-blocking coating layer. Preferably, the water-blocking layer is a water-blocking composite film layer.

[0014] Preferably, the water-blocking composite film layer adopts an ABA layer structure, wherein the A layer is an adhesive layer, the B layer is a water-blocking core layer, and the water-blocking core layer is preferably made of a thermoplastic polymer material.

[0015] Preferably, a photovoltaic module comprises a front panel packaging part, a battery string layer and the back panel packaging part which are stacked up and down and composited into one, the front panel packaging part and / or the back panel packaging part comprise the packaging plate material structure as described above, wherein the back panel packaging part preferably comprises an adhesive film layer in contact with the battery string layer.

[0016] The present application proposes a sandwich-shaped packaging board structure composed of a first fiber material reinforced polymer sheet, a water-blocking layer, and a second fiber material reinforced polymer sheet that are stacked up and down and composited into one. The structure has excellent water vapor penetration resistance, water resistance, and insulation properties. When it is used as the front panel packaging structure of a photovoltaic module, it can be directly contacted and packaged with the battery string layer without the use of the existing packaging film structure, which is beneficial to ensuring the service life of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a packaging plate structure of a photovoltaic module in an embodiment of the present application;

[0018] Figure 2 It is a schematic diagram of the process of preparing the packaging board structure of the photovoltaic module under the implementation mode of the present application. DETAILED DESCRIPTION

[0019] The utility model embodiment discloses a packaging plate structure of a photovoltaic component, comprising a first fiber material reinforced polymer sheet, a water-blocking layer and a second fiber material reinforced polymer sheet which are stacked up and down and composited into one.

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] Please refer to Figure 1 As shown, a packaging board structure of a photovoltaic module includes a first fiber material reinforced polymer sheet 10, a water-blocking layer 20 and a second fiber material reinforced polymer sheet 30 which are stacked up and down and composited into one; preferably, in this embodiment, the first fiber material reinforced polymer sheet 10 and the second fiber material reinforced polymer sheet 30 are symmetrical or asymmetrical relative to the water-blocking layer 20, and more preferably, for the sake of processing and manufacturing efficiency, in this embodiment, the first fiber material reinforced polymer sheet 10 and the second fiber material reinforced polymer sheet 30 are symmetrical relative to the water-blocking layer 20; the composition of the first fiber material reinforced polymer sheet 10 is the same as that of the second fiber material reinforced polymer sheet 30.

[0022] It should be particularly noted that, when the present application is implemented, the thicknesses of the first fiber material reinforced polymer sheet 10 , the water blocking layer 20 , and the second fiber material reinforced polymer sheet 30 may be selected according to actual packaging requirements.

[0023] Preferably, in the present embodiment, the thickness of the first fiber material reinforced polymer sheet 10 is in the range of 0.2-5 mm; and / or the thickness of the second fiber material reinforced polymer sheet 30 is in the range of 0.2-5 mm.

[0024] Preferably, in this embodiment, the first fiber material reinforced polymer sheet 10 and / or the second fiber material reinforced polymer sheet 30 are made of prepreg of fiber cloth and polymer; in other embodiments, the first fiber material reinforced polymer sheet 10 and / or the second fiber material reinforced polymer sheet 30 can of course also adopt a continuous fiber reinforced polymer unidirectional tape single-layer structure or a multi-layer laminated structure.

[0025] It should be noted that the raw materials and preparation processes selected for the fiber cloth and polymer prepreg in this application, as well as the raw materials and preparation processes selected for the continuous fiber reinforced polymer unidirectional tape single-layer structure or multi-layer laminated structure can be directly referred to the relevant records of the prior application (publication number CN117841489A).

[0026] Further preferably, in this embodiment, the fiber cloth is preferably glass fiber cloth, and the gram weight is preferably 50-160g / m 2 , can be woven by plain, twill, satin or other suitable textures; further preferably, in this embodiment, the fiber is preferably glass fiber; and / or further preferably, in this embodiment, the polymer is made of thermoplastic resin material, preferably polyester material or polypropylene material or polyether material, and any mixture of these materials can also be used, and this embodiment has no special innovative limitations on it.

[0027] Specifically preferably, in this embodiment, when preparing the prepreg of glass fiber cloth and polymer (referred to as "glass fiber prepreg cloth"), the glass fiber cloth reel is placed on the unwinding device of the traction machine, and the glass fiber cloth enters the powder spreading machine under the action of traction force, and the resin powder is evenly laid on the glass fiber cloth. After hot pressing by a roller press, it can be cut into sheets according to the specifications used, that is, the desired glass fiber prepreg cloth is obtained; preferably, in this embodiment, the gram weight of the glass fiber prepreg cloth is preferably 160-300g / m 2 .

[0028] Preferably, in this embodiment, the thickness of the water-blocking layer 20 is in the range of 0.02-1 mm, and the color is transparent or at least translucent; the water-blocking layer 20 includes a water-blocking film layer and / or a water-blocking coating, wherein the specific implementation schemes of the water-blocking film layer and the water-blocking coating in the present application can also be directly referred to the corresponding records of the waterproof film layer and the waterproof coating in the prior application (publication number CN117841489A), and this embodiment has no special innovative limitations on it.

[0029] More preferably, in the present embodiment, the water-blocking layer 20 adopts a water-blocking composite film layer, which is preferably prepared by a co-extrusion process; further preferably, in the present embodiment, the water-blocking composite film layer adopts an ABA layer structure, wherein layer A is an adhesive layer, layer B is a water-blocking core layer, and the water-blocking core layer is preferably made of a thermoplastic polymer material; wherein the water-blocking core layer can preferably adopt a polypropylene material or a polyethylene material, a modified material based on a polypropylene material, a polyethylene material, or other thermoplastic polymer materials with good waterproof effects, and this embodiment does not specifically limit it; the adhesive layer can preferably adopt a polyolefin material, or a modified polyethylene or a modified polyolefin material, or other thermoplastic polymer materials with good thermal bonding effects, and this embodiment does not specifically limit it.

[0030] It should be further noted that, preferably, in order to improve the preparation efficiency of the present application, please refer to Figure 2As shown, in this embodiment, when the packaging board structure of the photovoltaic module as described above is prepared in the present application, the first powder spreading machine a, the extruder b and the second powder spreading machine c can be arranged in sequence from top to bottom, which correspond to the preparation of the first fiber material reinforced polymer sheet 10 (specifically glass fiber prepreg), the water-blocking layer 20 (specifically water-blocking composite film layer) and the second fiber material reinforced polymer sheet 30 (specifically glass fiber prepreg); in the specific implementation, the water-blocking layer 20 is first supplied by the extruder b located in the middle for extrusion and stretching, and after reaching the set width and thickness, the first powder spreading machine a and the second powder spreading machine c are synchronously started to make the glass fiber prepreg, and after the three layers of materials drawn out are all stable, the three-layer composite structure is placed at a certain temperature, hot-pressed by a roller composite device, and after cooling, rolled or sliced ​​to obtain the specific packaging board structure in the shape of a "sandwich" proposed in this embodiment.

[0031] Preferably, the present embodiment further proposes a photovoltaic module, comprising a front panel packaging part, a battery string layer and a back panel packaging part (preferably composited by a laminator) which are stacked up and down and composited into one, the front panel packaging part and / or the back panel packaging part include the packaging board structure as described above, wherein the back panel packaging part preferably includes a film layer (for example, EVA film) in contact with the battery string layer; more preferably, the photovoltaic module adopts the packaging board structure as described above provided in the present embodiment as its front panel packaging part structure, without the need for a film structure, and directly contacts the battery string layer for packaging; the back packaging part can adopt any existing well-known back panel scheme, for example, a typical PET-based double-sided coated CPC back panel with a thickness of 300-350μm.

[0032] In order to further demonstrate the technical effects achieved by the implementation methods of the present application, based on the above implementation contents, this embodiment further sets the following specific embodiments:

[0033] Embodiment 1: A photovoltaic module packaging plate structure, characterized in that it comprises a glass fiber prepreg, an ABA type water-blocking composite film layer and a glass fiber prepreg which are laminated and integrated into one; wherein the glass fiber cloth in the glass fiber prepreg is made of twill and has a gram weight of 100g / m 2 ; The weight of glass fiber prepreg is 200g / m 2 ; The thickness of the ABA type water-blocking composite film layer is 0.075mm.

[0034] Embodiment 2: The rest of the technical solutions of Embodiment 2 are the same as those of Embodiment 1, except that, in Embodiment 2, the glass fiber cloth is made of plain weave.

[0035] Embodiment 3: The remaining technical solutions of Embodiment 3 are the same as those of Embodiment 1, except that in Embodiment 3, the gram weight of the glass fiber prepreg is 160 g / m 2 .

[0036] Embodiment 4: The remaining technical solutions of Embodiment 4 are the same as those of Embodiment 1, except that in Embodiment 4, the weight of the glass fiber cloth is 100 g / m 2 , the weight of glass fiber prepreg is 250g / m 2 .

[0037] Embodiment 5: The rest of the technical solutions of Embodiment 5 are the same as those of Embodiment 1, except that, in Embodiment 5, the thickness of the ABA type water-blocking composite film layer is 0.1 mm.

[0038] Comparative Example 1: The single-layer glass fiber prepreg in Example 1 was used.

[0039] Comparative Example 2: The two layers of glass fiber prepreg in Example 1 were used and hot-pressed for compounding.

[0040] The present application conducted the following performance comparison tests on the above Examples 1-5 and Comparative Examples 1-2. The test results are shown in Table 1 below:

[0041]

[0042] It should be noted that the light transmittance involved in Table 1 above of this application is obtained by testing in accordance with the IEC 62788-2-1:2023 standard; the water vapor permeability involved is obtained by testing in accordance with the GB / T 26253-2010 standard; the fire protection level involved is obtained by testing in accordance with the GB / T 8624-2012 standard; the testing process of the insulation level involved is: place the board between the two electrodes of the insulation tester, the electrodes touch the material, quickly increase the voltage to 8000V, and then maintain it for 1 minute to check whether the backboard material is broken down; if it is not broken down, it means that the insulation withstand voltage level of the board is OK.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photovoltaic module packaging plate structure, characterized in that: The invention comprises a first fiber material reinforced polymer sheet, a water-blocking layer and a second fiber material reinforced polymer sheet which are stacked up and down and composited into one.

2. The packaging plate structure of the photovoltaic module according to claim 1, characterized in that: The first fiber material reinforced polymer sheet and the second fiber material reinforced polymer sheet are in a symmetrical structure or an asymmetrical structure relative to the water blocking layer.

3. The packaging plate structure of the photovoltaic module according to claim 1, characterized in that: The composition of the first fiber material reinforced polymer sheet is the same as the composition of the second fiber material reinforced polymer sheet.

4. The packaging plate structure of the photovoltaic module according to claim 1, characterized in that: The thickness of the first fiber material reinforced polymer sheet is in the range of 0.2-5 mm; and / or the thickness of the second fiber material reinforced polymer sheet is in the range of 0.2-5 mm.

5. The packaging plate structure of the photovoltaic module according to claim 1, characterized in that: The first fiber material reinforced polymer sheet and / or the second fiber material reinforced polymer sheet adopts a continuous fiber reinforced polymer unidirectional tape single-layer structure or a multi-layer laminated structure.

6. The packaging plate structure of the photovoltaic module according to claim 5, characterized in that: The fibers are made of glass fiber cloth, and / or the polymer is made of thermoplastic resin material.

7. The packaging plate structure of the photovoltaic module according to claim 5, characterized in that: The fiber is glass fiber.

8. The packaging plate structure of the photovoltaic module according to claim 5, characterized in that: The polymer is a polyester material, a polypropylene material or a polyether material.

9. The packaging plate structure of the photovoltaic module according to claim 1, characterized in that: The thickness of the water-blocking layer is in the range of 0.02-1 mm.

10. The packaging plate structure of the photovoltaic module according to claim 1, characterized in that: The water-blocking layer includes a water-blocking film layer and / or a water-blocking coating layer.

11. The packaging plate structure of the photovoltaic module according to claim 10, characterized in that: The water-blocking layer is a water-blocking composite film layer.

12. The packaging plate structure of the photovoltaic module according to claim 11, characterized in that: The water-blocking composite film layer adopts an ABA layer structure, wherein the A layer is an adhesive layer and the B layer is a water-blocking core layer.

13. The packaging plate structure of the photovoltaic module according to claim 12, characterized in that: The water-blocking core layer is made of thermoplastic polymer material.

14. A photovoltaic module, comprising a front panel encapsulation part, a battery string layer and a back panel encapsulation part which are stacked up and down and combined into one body, characterized in that: The front panel encapsulation part and / or the back panel encapsulation part comprises the encapsulation board material structure as claimed in any one of claims 1-13.

15. The photovoltaic module according to claim 14, characterized in that: The backplane packaging part includes an adhesive film layer in contact with the battery string layer.

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