Weather-resistant optical battery back film

Abstract

The utility model relates to the technical field of battery back films, in particular to a weather-resistant light battery back film, which comprises a light-resistant film and a weather-resistant film, one side of the light-resistant film is fixedly connected with one side of the weather-resistant film, the other side of the weather-resistant film is fixedly connected with one side of an aging-resistant film, and the other side of the aging-resistant film is fixedly connected with the other side of the light-resistant film. The other side of the anti-aging film is fixedly connected with one side of the electrical insulating film, the other side of the electrical insulating film is fixedly connected with one side of the water vapor barrier film, and the other side of the water vapor barrier film is fixedly connected with one side of the adhesive layer. The solar cell back film can provide effective weather light resistance for a solar cell, prolong the service life of the solar cell and improve the working efficiency of an electric solar cell, has certain aging resistance, electrical insulation and water vapor barrier property, and further improves the functionality of the cell back film so as to better protect the electric solar cell.

Description

Technical Field

[0001] The utility model relates to the technical field of battery back films, in particular to a weather-resistant light-resistant battery back film. Background Art

[0002] The cell back film refers to one or more layers of material located on the back of a solar cell, which is used to improve the photoelectric conversion efficiency and performance of the cell.

[0003] Solar cells are exposed to the outside for a long time, and the existing cell back film lacks weather and light resistance. When facing various climatic conditions and extreme temperatures, the service life of solar cells will be greatly reduced. In addition, the performance of solar cells is not stable enough when facing light, and they are prone to yellowing or degradation, thereby reducing the working efficiency of solar cell modules. Therefore, a weather and light-resistant cell back film is proposed. Utility Model Content

[0004] In response to the problems in the prior art, the utility model provides a weather-resistant light-resistant battery back film, which improves the weather-resistant light-resistant property of the battery back film, thereby increasing the service life of the battery and improving the working efficiency of the solar cell.

[0005] The technical solution adopted by the utility model to solve its technical problems is a weather-resistant photoelectric battery back film, including a light-resistant film and a weather-resistant film, one side of the light-resistant film is fixedly connected to one side of the weather-resistant film, the other side of the weather-resistant film is fixedly connected to one side of the aging-resistant film, the other side of the aging-resistant film is fixedly connected to one side of the electrical insulating film, the other side of the electrical insulating film is fixedly connected to one side of the water vapor barrier film, and the other side of the water vapor barrier film is fixedly connected to one side of the adhesive layer.

[0006] By adopting the above technical solution, it is possible to provide solar cells with effective weather resistance, increase the service life of solar cells and improve the working efficiency of solar cells. It also has certain aging resistance, electrical insulation, and water vapor barrier properties, further increasing the functionality of the battery back film to better protect the solar cells.

[0007] Specifically, the light-resistant film is a silicon nitride film layer.

[0008] By adopting the above technical solution, the light-resistant film made of the silicon nitride film layer can increase the light resistance of the solar cell panel.

[0009] Specifically, the weather-resistant film is made of ETFE material.

[0010] By adopting the above technical solution, the weather-resistant film made of ETFE material can increase the weather resistance of the solar panel.

[0011] Specifically, the aging-resistant film is a fluorine-containing thin film layer.

[0012] By adopting the above technical solution, the aging-resistant film made of the fluorine-containing thin film layer can reduce the aging degree of the solar cell panel.

[0013] Specifically, the electrical insulating film is a PET blue film.

[0014] By adopting the above technical solution, the electrical insulating film made of PET blue film can effectively prevent internal short circuit of the battery and ensure the safety and reliability of the battery.

[0015] Specifically, the water vapor barrier film is a PVF film.

[0016] By adopting the above technical solution, the water vapor barrier film made of PVF film can prevent water vapor from penetrating into the interior of the battery and affecting the battery performance.

[0017] The adhesive layer can specifically be an EVA film.

[0018] Beneficial effects of the utility model:

[0019] The weather-resistant light-resistant battery back film described in the present invention has a simple and reasonable structure, can provide effective weather-resistant light-resistant properties for solar cells, increase the service life of solar cells and improve the working efficiency of solar cells, and has certain aging resistance, electrical insulation, and water vapor barrier properties, further increasing the functionality of the battery back film to better protect solar cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0023] In the figure: 1. Light-resistant film; 2. Weather-resistant film; 3. Aging-resistant film; 4. Adhesive layer; 5. Water vapor barrier film; 6. Electrical insulation film. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] In order to improve the weather resistance of the battery back film, thereby increasing the battery life and improving the working efficiency of the solar cell, as an embodiment of the present invention, Figure 1-Figure 2As shown, the weather-resistant photoelectric battery back film described in the present invention includes a light-resistant film 1 and a weather-resistant film 2, one side of the light-resistant film 1 is fixedly connected to one side of the weather-resistant film 2, the other side of the weather-resistant film 2 is fixedly connected to one side of the aging-resistant film 3, the other side of the aging-resistant film 3 is fixedly connected to one side of the electrical insulating film 6, the other side of the electrical insulating film 6 is fixedly connected to one side of the water vapor barrier film 5, and the other side of the water vapor barrier film 5 is fixedly connected to one side of the adhesive layer 4.

[0026] The present invention also includes that the light-resistant film 1 is specifically a silicon nitride film layer.

[0027] When in use, sticking a silicon nitride film layer on the back of the battery can significantly improve the reflectivity and passivation effect of the battery. The silicon nitride film layer can not only reduce the reflection loss of light, but also reduce back recombination through passivation, thereby improving the photoelectric conversion efficiency of the battery.

[0028] The present invention also includes that the weather-resistant film 2 is specifically made of ETFE material.

[0029] When used, ETFE material has excellent durability and weather resistance, and can withstand extreme temperature and climate conditions, thereby extending the service life of solar panels.

[0030] The present invention also includes that the anti-aging film 3 is specifically a fluorine-containing film layer.

[0031] When in use, the fluorine-containing film layer has good resistance to ultraviolet rays, moisture and heat, and aging, and can effectively prevent the battery cells from being corroded by water, oxygen, and corrosive gases.

[0032] The present invention also includes that the electrical insulating film 6 is specifically a PET blue film.

[0033] PET blue film is a widely used coating material for power battery cells, offering excellent chemical resistance, tensile strength, and insulation properties. Bonded to the battery cell's aluminum alloy casing via pressure-sensitive adhesive, it effectively prevents internal short circuits and ensures battery safety and reliability.

[0034] The present invention also includes that the water vapor barrier film 5 is specifically a PVF film.

[0035] When in use, PVF film is recognized as the best combination of electrical insulation, durability, moisture resistance, UV protection and high temperature resistance, which can prevent water vapor from penetrating into the battery and affecting battery performance.

[0036] The present invention also includes that the adhesive layer 4 can be specifically an EVA film.

[0037] When the utility model is in use, the adhesive layer 4 is attached to the back of the solar cell. From the outer layer to the inner layer, the light-resistant film 1 made of silicon nitride film can increase the light resistance of the solar cell panel, the weather-resistant film 2 made of ETFE material can increase the weather resistance of the solar cell panel, the aging-resistant film 3 made of fluorine-containing film layer can reduce the aging degree of the solar cell panel, the electrical insulation film 6 made of PET blue film can effectively prevent the internal short circuit of the battery to ensure the safety and reliability of the battery, and the water vapor barrier film 5 made of PVF film can prevent water vapor from penetrating into the interior of the battery and affecting the battery performance.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A weather-resistant photoresist back film for a solar cell, comprising a light-resistant film (1) and a weather-resistant film (2), characterized in that: One side of the light-resistant film (1) is fixedly connected to one side of the weather-resistant film (2), the other side of the weather-resistant film (2) is fixedly connected to one side of the aging-resistant film (3), the other side of the aging-resistant film (3) is fixedly connected to one side of the electrical insulation film (6), the other side of the electrical insulation film (6) is fixedly connected to one side of the water vapor barrier film (5), and the other side of the water vapor barrier film (5) is fixedly connected to one side of the adhesive layer (4).

2. The weather-resistant solar cell back film according to claim 1, characterized in that: The light-resistant film (1) is specifically a silicon nitride film layer.

3. The weather-resistant solar cell back film according to claim 1, characterized in that: The weather-resistant film (2) is specifically made of ETFE material.

4. The weather-resistant solar cell back film according to claim 1, characterized in that: The aging-resistant film (3) is specifically a fluorine-containing thin film layer.

5. The weather-resistant solar cell back film according to claim 1, characterized in that: The electrical insulating film (6) is specifically a PET blue film.

6. The weather-resistant solar cell back film according to claim 1, characterized in that: The water vapor barrier film (5) is specifically a PVF film.

7. The weather-resistant solar cell back film according to claim 1, characterized in that: The adhesive layer (4) can specifically be an EVA film.

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