Photovoltaic module containing waterproof layer

Abstract

The utility model discloses a photovoltaic assembly containing a waterproof layer, which comprises a front plate, a front plate adhesive film, a battery piece, a rear plate adhesive film, a waterproof plate and a back plate which are arranged in sequence, and the waterproof plate comprises a bonding layer, a metal waterproof layer and an insulating layer which are arranged in sequence. According to the utility model, through the arrangement of the metal waterproof layer, water vapor can be prevented from intruding into the surfaces of the battery pieces, the performance of the photovoltaic assembly is improved, and the service life is prolonged; according to the utility model, through the arrangement of the insulating layer, short circuit caused by conduction of the battery piece and the metal waterproof layer is avoided; according to the utility model, the bonding layer is compounded on the metal waterproof layer and can be directly bonded with the back plate, and the bonding layer does not need to be independently arranged, so that the production process of the photovoltaic module is simpler; according to the utility model, the embossed structure is arranged on one side of the insulating layer close to the battery piece, so that light reflection of the inner side of the backboard is increased, and the power of the photovoltaic module is improved.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic module technology, and specifically relates to a photovoltaic module containing a water-blocking layer. Background Technology

[0002] With the booming development of the photovoltaic industry, the application scenarios of photovoltaics are gradually increasing, and the requirements for the reliability of photovoltaic modules are becoming higher and higher.

[0003] In addition, with the iteration of technology, more efficient N-type battery modules are gradually replacing P-type battery modules. Since the structure and material characteristics of N-type batteries are much more sensitive to water vapor than P-type batteries, conventional single-glass encapsulation methods usually cannot meet the encapsulation requirements of N-type batteries. However, single-glass batteries still have a significant advantage in some distributed and industrial / commercial roofs with load-bearing requirements due to their light weight.

[0004] Therefore, there is an urgent need for a photovoltaic module with a water-blocking layer to improve the resistance to damp heat of single-glass modules and reduce production costs. Utility Model Content

[0005] The purpose of this invention is to provide a photovoltaic module with a water-blocking layer to solve the problems mentioned in the background art. The photovoltaic module with a water-blocking layer provided by this invention has the characteristics of improving the resistance to damp heat of single-glass modules and reducing production costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic module containing a water-blocking layer, comprising a front panel, a front panel adhesive film, a battery cell, a rear panel adhesive film, a water-blocking plate, and a back panel arranged in sequence, wherein the water-blocking plate comprises an adhesive layer, a metal water-blocking layer, and an insulating layer arranged in sequence.

[0007] Furthermore, in this invention, the insulating layer is located on the side closest to the battery cell.

[0008] Furthermore, in this invention, the material of the insulating layer includes, but is not limited to, one of PET, PBT, PC, PA, PMMA, PPS, PO, polyurethane, or resin.

[0009] Furthermore, in this invention, the insulating layer has an embossed structure on the side near the battery cell.

[0010] Furthermore, in this invention, the material of the metal water-blocking layer includes, but is not limited to, one of aluminum foil, copper foil, or tin foil.

[0011] Furthermore, in this invention, the material of the adhesive layer includes, but is not limited to, one of EVA, POE, or EPE.

[0012] In this invention, the metal water-blocking layer is further attached to the insulating layer by vapor deposition, and the thickness of the metal water-blocking layer is 20-100nm.

[0013] Furthermore, in this invention, the metal water-blocking layer is bonded to the insulating layer with adhesive, the thickness of the metal water-blocking layer is 5um-30um, and the thickness of the adhesive is less than 200um.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of a metal water-blocking layer, can prevent water vapor from penetrating to the surface of the battery cells, thereby improving the performance of the photovoltaic module and extending its service life.

[0016] 2. This utility model avoids short circuits caused by the battery cells and the metal water-blocking layer being connected by the insulating layer.

[0017] 3. This utility model combines the adhesive layer with the metal water-blocking layer, which can be directly bonded to the backsheet without the need for a separate adhesive layer, making the production process of photovoltaic modules simpler.

[0018] 4. The insulating layer of this utility model has an embossed structure on the side close to the battery cell, which increases the reflection of light on the inner side of the back sheet and improves the power of the photovoltaic module. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the water-blocking plate of this utility model;

[0021] In the diagram: 1. Front panel; 2. Front panel adhesive film; 3. Battery cell; 4. Rear panel adhesive film; 5. Water barrier plate; 51. Adhesive layer; 52. Metal water barrier layer; 53. Insulating layer; 6. Back panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please see Figures 1-2The present invention provides the following technical solution: a photovoltaic module containing a water-blocking layer, comprising a front panel 1, a front panel adhesive film 2, a solar cell 3, a rear panel adhesive film 4, a water-blocking plate 5, and a back panel 6 arranged in sequence. The water-blocking plate 5 comprises an adhesive layer 51, a metal water-blocking layer 52, and an insulating layer 53 arranged in sequence. The insulating layer 53 is located on the side close to the solar cell 3. The insulating layer 53 is made of PET. The metal water-blocking layer 52 is made of aluminum foil. The adhesive layer 51 is made of EVA. The metal water-blocking layer 52 is attached to the insulating layer 53 by vapor deposition. The thickness of the metal water-blocking layer 52 is 20nm.

[0025] By adopting the above technical solutions, this utility model can prevent water vapor from penetrating the surface of the solar cell 3 through the setting of the metal water-blocking layer 52, thereby improving the performance of the photovoltaic module and extending its service life. This utility model can also prevent short circuits caused by the connection between the solar cell 3 and the metal water-blocking layer 52 through the setting of the insulating layer 53. This utility model can directly bond the adhesive layer 51 to the back sheet 6 by bonding the adhesive layer 51 to the metal water-blocking layer 52, without the need for a separate adhesive layer, thus simplifying the production process of the photovoltaic module.

[0026] Example 2

[0027] The difference between this embodiment and Embodiment 1 is that it provides a photovoltaic module with a water-blocking layer, including a front panel 1, a front panel adhesive film 2, a solar cell 3, a rear panel adhesive film 4, a water-blocking plate 5, and a back panel 6 arranged in sequence. The water-blocking plate 5 includes an adhesive layer 51, a metal water-blocking layer 52, and an insulating layer 53 arranged in sequence. The insulating layer 53 is located on the side close to the solar cell 3. The insulating layer 53 is made of PC. The metal water-blocking layer 52 is made of copper foil. The adhesive layer 51 is made of POE. The metal water-blocking layer 52 is attached to the insulating layer 53 by vapor deposition. The thickness of the metal water-blocking layer 52 is 100nm.

[0028] Example 3

[0029] The difference between this embodiment and Embodiment 1 is that it provides a photovoltaic module with a water-blocking layer, including a front panel 1, a front panel adhesive film 2, a solar cell 3, a rear panel adhesive film 4, a water-blocking plate 5, and a back panel 6 arranged in sequence. The water-blocking plate 5 includes an adhesive layer 51, a metal water-blocking layer 52, and an insulating layer 53 arranged in sequence. The insulating layer 53 is located on the side close to the solar cell 3. The insulating layer 53 is made of polyurethane. The metal water-blocking layer 52 is made of tin foil. The adhesive layer 51 is made of EPE. The metal water-blocking layer 52 is bonded to the insulating layer 53 with adhesive. The thickness of the metal water-blocking layer 52 is 20 μm, and the thickness of the adhesive is 100 μm.

[0030] Example 4

[0031] The difference between this embodiment and embodiment 1 is that, specifically, the insulating layer 53 has an embossed structure on the side near the battery cell 3.

[0032] By adopting the above technical solution, the reflection of light on the inner side of the backsheet 6 is increased, thereby improving the power of the photovoltaic module.

[0033] In summary, this invention, through the provision of the metal water-blocking layer 52, can prevent moisture from penetrating the surface of the solar cell 3, thereby improving the performance of the photovoltaic module and extending its service life. The provision of the insulating layer 53 prevents short circuits caused by electrical conductivity between the solar cell 3 and the metal water-blocking layer 52. The bonding layer 51 is laminated onto the metal water-blocking layer 52, allowing direct bonding to the backsheet 6 without the need for a separate bonding layer, simplifying the photovoltaic module manufacturing process. Furthermore, the insulating layer 53 has an embossed structure on the side closest to the solar cell 3, increasing the reflection of light from the inner side of the backsheet 6 and improving the power output of the photovoltaic module.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic module containing a water-blocking layer, characterized in that: It includes a front panel, a front panel adhesive film, a battery cell, a rear panel adhesive film, a water-blocking plate, and a back panel arranged in sequence. The water-blocking plate includes an adhesive layer, a metal water-blocking layer, and an insulating layer arranged in sequence.

2. A photovoltaic module containing a water-blocking layer according to claim 1, characterized in that: The insulating layer is located on the side closest to the solar cell.

3. A photovoltaic module containing a water-blocking layer according to claim 1, characterized in that: The insulating layer is made of, but is not limited to, one of PET, PBT, PC, PA, PMMA, PPS, PO, polyurethane, or resin.

4. A photovoltaic module containing a water-blocking layer according to claim 1, characterized in that: The insulating layer has an embossed structure on the side closest to the battery cell.

5. A photovoltaic module containing a water-blocking layer according to claim 1, characterized in that: The materials used for the metal water-blocking layer include, but are not limited to, aluminum foil, copper foil, or tin foil.

6. A photovoltaic module containing a water-blocking layer according to claim 1, characterized in that: The adhesive layer material includes, but is not limited to, one of EVA, POE or EPE.

7. A photovoltaic module containing a water-blocking layer according to claim 1, characterized in that: The metal water-blocking layer is attached to the insulating layer by vapor deposition, and the thickness of the metal water-blocking layer is 20-100nm.

8. A photovoltaic module containing a water-blocking layer according to claim 1, characterized in that: The metal water-blocking layer is bonded to the insulating layer with adhesive. The thickness of the metal water-blocking layer is 5um-30um, and the thickness of the adhesive is less than 200um.

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