A solar photovoltaic module

Abstract

This utility model provides a solar photovoltaic module, relating to the field of solar cells, including a front panel, a first encapsulating film, solar cells, a second encapsulating film, and a back panel. The front panel, first encapsulating film, solar cells, second encapsulating film, and back panel are sequentially stacked, forming a waterproof space on the outer side of the solar cells and between the front panel and back panel. This waterproof space is filled with butyl rubber, and within the butyl rubber is filled a water-impermeable material. This solar photovoltaic module, through the waterproof space filled with butyl rubber and a water-impermeable material, not only reduces the overall amount of butyl rubber used during photovoltaic module encapsulation, thus saving costs, but also, during the encapsulation process, the water-impermeable material, supported by the butyl rubber between the front panel and back panel, improves the adhesion between the butyl rubber and the front panel and back panel, effectively preventing moisture penetration during encapsulation and ensuring the encapsulation effect.

Description

Technical Field

[0001] This utility model relates to the field of solar cell technology, specifically to a solar photovoltaic module. Background Technology

[0002] As the application scenarios for solar photovoltaic modules become increasingly diverse, the performance requirements for these modules are also rising, especially under high temperature and humidity conditions, where high water resistance is essential. Current technology typically involves adding a layer of butyl rubber around the perimeter of the encapsulating film within the photovoltaic module.

[0003] According to Chinese Patent No. CN219046292U, an ultra-low water permeability encapsulated photovoltaic module and encapsulation support structure are provided. This prior art includes an upper glass layer, an upper encapsulating film, a battery string, a lower encapsulating film, a backsheet, and butyl rubber. The upper glass layer, the upper encapsulating film, the battery string, the lower encapsulating film, and the backsheet are arranged sequentially to form a layer structure. The butyl rubber is semi-frame-shaped and sealantly covers the entire outer periphery of the layer structure.

[0004] However, the ultra-low water permeability encapsulated photovoltaic module and encapsulation support structure proposed in the document simply adds a layer of butyl rubber around the encapsulation. Because butyl rubber has strong fluidity when heated and relatively low hardness, the interfacial adhesion between the butyl rubber and the glass surface is relatively poor during encapsulation, increasing the risk of water vapor permeation. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a solar photovoltaic module that solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a solar photovoltaic module, including a front panel, a first adhesive film, a battery cell, a second adhesive film, and a back panel, wherein the front panel, the first adhesive film, the battery cell, the second adhesive film, and the back panel are stacked sequentially, and a waterproof space is formed on the outside of the battery cell and between the front panel and the back panel, the waterproof space is filled with butyl rubber, and the butyl rubber is filled with a water-impermeable material.

[0009] Preferably, the impermeable material is glass or aluminum alloy.

[0010] Preferably, the impermeable material is configured as a long strip, and the impermeable material is continuously arranged along the circumference of the battery cell to form a closed waterproof frame.

[0011] Preferably, the cross-section of the impermeable material is rectangular.

[0012] Preferably, the cross-section of the impermeable material is trapezoidal.

[0013] Preferably, the solar cell is configured as a crystalline silicon solar cell or a thin-film solar cell.

[0014] (III) Beneficial Effects

[0015] This utility model provides a solar photovoltaic module. It has the following beneficial effects:

[0016] 1. This solar photovoltaic module, through the setting of a waterproof space, is filled with butyl rubber and impermeable material. This not only reduces the overall amount of butyl rubber used during photovoltaic module encapsulation, thus saving costs, but also, during the encapsulation process, the butyl rubber between the impermeable material and the front and back panels can be improved with the support of the impermeable material, effectively preventing moisture penetration during the encapsulation process and ensuring the encapsulation effect.

[0017] 2. This solar photovoltaic module, by continuously arranging impermeable materials along the circumference of the cells to form a closed waterproof frame, can effectively improve the overall waterproof effect after encapsulation, resulting in better waterproof performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0020] Figure 3 This is the main view of the structure of this utility model.

[0021] In the diagram: 1. Front panel, 2. First adhesive film, 3. Second adhesive film, 4. Back panel, 5. Battery cell, 6. Waterproof material, 7. Butyl rubber. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model embodiment provides a solar photovoltaic module, such as... Figure 1-3 As shown, it includes a front panel 1, a first adhesive film 2, a battery cell 5, a second adhesive film 3, and a back panel 4. The front panel 1, the first adhesive film 2, the battery cell 5, the second adhesive film 3, and the back panel 4 are stacked in sequence, and a waterproof space is formed on the outside of the battery cell 5 and between the front panel 1 and the back panel 4. The waterproof space is filled with butyl rubber 7, and the butyl rubber 7 is filled with a water-impermeable material 6.

[0024] By creating a waterproof space and filling it with butyl rubber 7 and impermeable material 6, not only is the overall amount of butyl rubber 7 reduced during photovoltaic module encapsulation, thus saving costs, but also, during the encapsulation process, the butyl rubber 7 between the impermeable material 6 and the front panel 1 and back panel 4 is enhanced by the support of the impermeable material 6, effectively preventing moisture penetration during encapsulation and ensuring the encapsulation effect.

[0025] The waterproof material 6 is surrounded by butyl rubber 7, which does not affect the performance of the materials originally in contact with the butyl rubber 7.

[0026] The impermeable material 6 is made of glass or aluminum alloy.

[0027] The impermeable material 6 is set in a long strip shape and is continuously arranged along the circumference of the battery cell 5 to form a closed waterproof frame.

[0028] By continuously arranging the impermeable material 6 along the circumference of the battery cell 5 to form a closed waterproof frame, the waterproof effect after overall encapsulation can be effectively improved, resulting in better waterproof performance.

[0029] Moreover, the frame structure of the impermeable material 6 can improve the overall mechanical properties of the component.

[0030] The cross-section of the impermeable material 6 is set to a rectangle.

[0031] The cross-section of the impermeable material 6 is trapezoidal. This allows for an increase in the proportion of butyl rubber 7, thereby improving the waterproofing effect.

[0032] Battery cell 5 is configured as a crystalline silicon solar cell or a thin-film solar cell.

[0033] Working principle: By setting up a waterproof space, butyl rubber 7 and impermeable material 6 are filled in the waterproof space. This not only reduces the overall amount of butyl rubber 7 used during photovoltaic module encapsulation, thus saving costs, but also, during the encapsulation process, the butyl rubber 7 between the impermeable material 6 and the front panel 1 and back panel 4 can be improved with the support of the impermeable material 6, effectively preventing water vapor from passing through during the encapsulation process and ensuring the encapsulation effect.

[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 solar photovoltaic module, comprising a front plate (1), a first adhesive film (2), a cell sheet (5), a second adhesive film (3), and a back plate (4), characterized in that: The front panel (1), the first adhesive film (2), the battery cell (5), the second adhesive film (3), and the back panel (4) are stacked in sequence, and a waterproof space is formed on the outside of the battery cell (5) and between the front panel (1) and the back panel (4). The waterproof space is filled with butyl rubber (7), and the butyl rubber (7) is filled with a waterproof material (6).

2. A solar photovoltaic module according to claim 1, wherein: The impermeable material (6) is set as glass or aluminum alloy.

3. A solar photovoltaic module according to claim 1, wherein: The impermeable material (6) is arranged in a long strip shape, and the impermeable material (6) is continuously arranged along the circumference of the battery cell (5) to form a closed waterproof frame.

4. A solar photovoltaic module according to claim 3, wherein: The cross-section of the impermeable material (6) is set to rectangular.

5. A solar photovoltaic module according to claim 3, wherein: The cross-section of the impermeable material (6) is set as trapezoidal.

6. A solar photovoltaic module according to claim 1, wherein: The battery cell (5) is configured as a crystalline silicon solar cell or a thin-film solar cell.

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