Photovoltaic module film tape and photovoltaic module

Abstract

The utility model discloses a photovoltaic module film tape and a photovoltaic module, and relates to the technical field of photovoltaic module supplies, the photovoltaic module film tape comprises a film tape main body, the film tape main body is composed of a base layer, a reflective layer, an anti-aging layer and two bonding layers, the top of the base layer is compounded with the bottom of the reflective layer, and the top of the anti-aging layer is compounded with the bottom of the anti-aging layer. The top of the reflective layer is integrally provided with a rhombic recess, and the top of the reflective layer is compounded with the bottom of the anti-aging layer; according to the utility model, the polyvinylidene fluoride film is used as the material of the base layer, so that the mechanical strength and toughness of the base layer are improved, the retro-reflection effect of the film belt main body, the diffuse reflection effect of light rays and the power generation efficiency of the assembly are improved by matching the reflective layer and the rhombic indents, and the weather resistance of the film belt main body is improved by using the anti-aging layer, so that the service life of the assembly is prolonged. The influence on the use of the film belt in ultraviolet, high-temperature, humidity and other environments for a long time is avoided, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component supplies, in particular to a photovoltaic component film tape and a photovoltaic component. Background Art

[0002] Photovoltaic power generation system is referred to as photovoltaic, and the film tape in photovoltaic modules is used to connect the backboard and the film, and it plays a vital role in improving stability.

[0003] Currently, a Chinese utility model, with publication number CN220692042U, discloses a photovoltaic module film tape and a photovoltaic module. In this utility model, the photovoltaic module film tape comprises a reflective layer, a substrate layer, and an adhesive layer. The adhesive layer is used to bond the photovoltaic module's photovoltaic backsheet. The substrate layer is positioned between the adhesive layer and the reflective layer. The overall thickness of the film tape is 100-110 μm. The adhesive layer accounts for 40%-60% of the overall thickness of the film tape, and the substrate layer accounts for 25%-40% of the overall thickness of the film tape. The thickness of the film tape of this utility model can meet the thickness requirements of both patterned glass and float glass. The film tape can be used for both patterned glass and float glass, thereby reducing the number of film tape replacement steps in the photovoltaic module production process, improving photovoltaic module production efficiency, and reducing the costs of film tape replacement and module production.

[0004] In summary, although the membrane tape can reduce the cost of membrane tape replacement and component production, there are still certain problems in its use. For example, the membrane tape lacks an anti-aging and durable structure. Under the influence of long-term environmental factors such as ultraviolet rays, high temperature and humidity, the membrane tape is very prone to aging, cracking and decreased density, which in turn affects the stability of the connection between the backplane and the film, causing problems of water vapor infiltration and oxidation. Utility Model Content

[0005] The purpose of the present invention is to provide a photovoltaic module film tape to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: including a film strip main body, which is composed of a base layer, a reflective layer, an aging-resistant layer and an adhesive layer. There are two adhesive layers. The top of the base layer is compounded with the bottom of the reflective layer. The top of the reflective layer is integrally processed with a diamond-shaped concave. The top of the reflective layer is compounded with the bottom of the aging-resistant layer. The two adhesive layers are respectively compounded with the top of the aging-resistant layer and the bottom of the base layer.

[0007] In a further embodiment, the base layer is made of polyvinylidene fluoride film with a thickness of thirty micrometers to fifty micrometers.

[0008] The above technical solution can improve the mechanical strength and toughness of the base layer and enhance the resistance to ultraviolet rays and nuclear radiation.

[0009] In a further embodiment, the reflective layer is made of a reflective film with a thickness of 40 micrometers to 60 micrometers.

[0010] The above technical solution is adopted: using reflective film as the reflective layer can improve the retroreflective effect of the film strip body, and combined with the diamond-shaped concave, it can improve the diffuse reflection effect of light and increase the power generation efficiency of the component.

[0011] In a further embodiment, the anti-aging layer is made of polymethyl methacrylate and has a thickness of twenty microns to forty microns.

[0012] The above technical solution is adopted to improve the light transmittance while protecting the film strip body from damage by ultraviolet radiation, thereby improving the weather resistance of the film strip body.

[0013] In a further embodiment, the adhesive layer is made of acrylic sealant and has a thickness of ten to thirty microns.

[0014] The above technical solution is adopted to improve its weather resistance and prevent yellowing after long-term use.

[0015] The purpose of the present utility model is to provide a photovoltaic module, which adopts the photovoltaic module film tape, including panel glass, a first adhesive film, a battery panel group, a second adhesive film, a film tape body and a backboard. The film tape body is located between the second adhesive film and the backboard, and the two adhesive layers of the film tape body are respectively bonded to the second adhesive film and the backboard.

[0016] The present invention is further configured such that the material of the back plate is polyvinyl fluoride.

[0017] Adopting the above technical solution: improving the use strength and durability of the photovoltaic module backplane.

[0018] The present invention is further configured such that the first adhesive film and the second adhesive film are both made of transparent EVA adhesive film.

[0019] The above technical solution is adopted to ensure the adhesion, durability and optical properties of the first film and the second film.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The utility model uses polyvinylidene fluoride film as the base material to improve the mechanical strength and toughness of the base layer. Combined with the use of a reflective layer and a diamond-shaped concave, the film strip body has a retroreflective effect, which improves the diffuse reflection effect of light and increases the power generation efficiency of the component. After the use of an aging-resistant layer, the weather resistance of the film strip body is improved, avoiding long-term exposure to ultraviolet rays, high temperature and humidity, which may affect the use of the film strip, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an exploded view of the structure of the main body of the middle membrane belt of the utility model;

[0023] Figure 2 It is a schematic diagram of the structural connection of the photovoltaic components in the present utility model.

[0024] In the figure: 1. Film strip body; 101. Base layer; 102. Reflective layer; 103. Anti-aging layer; 104. Adhesive layer; 2. Diamond-shaped concave; 3. Panel glass; 4. First adhesive film; 5. Solar panel group; 6. Second adhesive film; 7. Back panel. DETAILED DESCRIPTION

[0025] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1 and Figure 2 As shown, a photovoltaic module film strip includes a film strip body 1, which is composed of a base layer 101, a reflective layer 102, an aging-resistant layer 103 and an adhesive layer 104. There are two adhesive layers 104. The top of the base layer 101 is compounded with the bottom of the reflective layer 102. The top of the reflective layer 102 is integrally processed with a diamond-shaped concave 2. The top of the reflective layer 102 is compounded with the bottom of the aging-resistant layer 103. The two adhesive layers 104 are respectively compounded with the top of the aging-resistant layer 103 and the bottom of the base layer 101. By using polyvinylidene fluoride film as the base layer 101 material, the mechanical strength and toughness of the base layer 101 are improved. With the use of the reflective layer 102 and the diamond-shaped concave 2, the retroreflective effect of the film strip body 1 is improved, the diffuse reflection effect of light is improved, and the power generation efficiency of the module is increased. After the use of the aging-resistant layer 103, the weather resistance of the film strip body 1 is improved, and the use of the film strip is prevented from being affected by ultraviolet rays, high temperature and humidity for a long time, thereby improving practicality.

[0028] refer to Figure 2 A photovoltaic module adopts the photovoltaic module film tape, including panel glass 3, a first adhesive film 4, a battery panel group 5, a second adhesive film 6, a film tape body 1 and a backboard 7. The film tape body 1 is located between the second adhesive film 6 and the backboard 7, and the two adhesive layers 104 of the film tape body 1 are respectively bonded to the second adhesive film 6 and the backboard 7.

[0029] refer to Figure 1 The material of the base layer 101 is polyvinylidene fluoride film, and its thickness is thirty to fifty microns. By setting the material of the base layer 101 to polyvinylidene fluoride film, and its thickness is thirty to fifty microns, and using polyvinylidene fluoride film as the base layer 101, the mechanical strength and toughness of the base layer 101 can be improved, and the resistance to ultraviolet rays and nuclear radiation can be improved.

[0030] refer to Figure 1 The reflective layer 102 is made of a reflective film with a thickness of forty to sixty microns. By setting the reflective layer 102 to be made of a reflective film with a thickness of forty to sixty microns, and using reflective film as the reflective layer 102, the retroreflective effect of the film strip body 1 can be improved, and combined with the diamond-shaped concave 2, the diffuse reflection effect of light can be improved, thereby increasing the power generation efficiency of the component.

[0031] refer to Figure 1 The material of the aging-resistant layer 103 is polymethyl methacrylate, and its thickness is twenty to forty microns. By setting the material of the aging-resistant layer 103 to polymethyl methacrylate, and its thickness is twenty to forty microns, while improving the transmittance, it protects the film strip body 1 from damage by ultraviolet radiation and improves the weather resistance of the film strip body 1.

[0032] refer to Figure 1 The material of the adhesive layer 104 is acrylic sealant, and its thickness is ten to thirty microns. By setting the material of the adhesive layer 104 to acrylic sealant, and its thickness is ten to thirty microns, its weather resistance is improved and yellowing will not occur after long-term use.

[0033] refer to Figure 2 The material of the back plate 7 is polyvinyl fluoride. By setting the material of the back plate 7 to polyvinyl fluoride, the use strength and durability of the photovoltaic module back plate 7 are improved.

[0034] refer to Figure 2 The first adhesive film 4 and the second adhesive film 6 are both made of transparent EVA films. By setting the first adhesive film 4 and the second adhesive film 6 to be made of transparent EVA films, the adhesion, durability and optical properties of the first adhesive film 4 and the second adhesive film 6 are guaranteed.

[0035] Brief description of the usage process: When in use, the back plate 7, the second adhesive film 6, the solar panel group 5, the first adhesive film 4 and the panel glass 3 are stacked and pressed in sequence, wherein the film strip body 1 is located between the back plate 7 and the second adhesive film 6. Because the polyvinylidene fluoride film is used as the base material 101, the mechanical strength and toughness of the base material 101 are improved. Combined with the use of the reflective layer 102 and the diamond-shaped concave 2, the retroreflective effect of the film strip body 1 is improved, the diffuse reflection effect of light is improved, and the power generation efficiency of the component is increased. After the use of the aging-resistant layer 103, the weather resistance of the film strip body 1 is improved, avoiding long-term exposure to ultraviolet rays, high temperature and humidity, etc., which may affect the use of the film strip, thereby improving practicality.

[0036] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic module film tape, comprising a film tape body (1), characterized in that: The film tape body (1) is composed of a base layer (101), a reflective layer (102), an anti-aging layer (103) and an adhesive layer (104), the number of the adhesive layers (104) is two, the top of the base layer (101) is compounded with the bottom of the reflective layer (102), the top of the reflective layer (102) is integrally processed with a diamond-shaped concave (2), the top of the reflective layer (102) is compounded with the bottom of the anti-aging layer (103), and the two adhesive layers (104) are respectively compounded with the top of the anti-aging layer (103) and the bottom of the base layer (101).

2. The photovoltaic module film tape according to claim 1, characterized in that: The base layer (101) is made of polyvinylidene fluoride film, and its thickness is 30 to 50 microns.

3. The photovoltaic module film tape according to claim 1, characterized in that: The reflective layer (102) is made of a reflective film, and its thickness is 40 to 60 microns.

4. The photovoltaic module film tape according to claim 1, characterized in that: The material of the aging-resistant layer (103) is polymethyl methacrylate, and its thickness is 20 to 40 microns.

5. The photovoltaic module film tape according to claim 1, characterized in that: The adhesive layer (104) is made of acrylic sealant and has a thickness of ten to thirty microns.

6. A photovoltaic module, comprising the photovoltaic module film tape according to any one of claims 1 to 5, characterized in that: The invention comprises a panel glass (3), a first adhesive film (4), a battery panel group (5), a second adhesive film (6), a back plate (7) and a film strip body (1), wherein the film strip body (1) is located between the second adhesive film (6) and the back plate (7), and the two adhesive layers (104) of the film strip body (1) are respectively bonded to the second adhesive film (6) and the back plate (7).

7. The photovoltaic module according to claim 6, characterized in that: The material of the back plate (7) is polyvinyl fluoride.

8. The photovoltaic module according to claim 6, characterized in that: The first adhesive film (4) and the second adhesive film (6) are both made of transparent EVA adhesive film.

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