Double-sided embossed EVA elastic composite adhesive film for photovoltaic module

Abstract

The application provides a double-sided embossed EVA elastic composite adhesive film for a photovoltaic module, the composite adhesive film has a composite layered structure and comprises a buffer adhesive layer, a barrier layer and an adhesive layer, and the application also describes a device for cooling forming of the adhesive film, the device comprises a conveying roller, a heat dissipation assembly, a cleaning assembly and a pressing assembly, wherein the heat dissipation assembly can realize the technical effects that the air flow exhaust speed is improved, the first and second flow guide pieces are arranged to influence the air flow movement direction, the air flow is concentrated, the cooling effect is improved, and the coverage of the air flow is expanded.

Description

Technical Field

[0001] This invention belongs to the field of composite film technology, and specifically relates to a double-sided embossed EVA elastic composite film for photovoltaic modules. Background Technology

[0002] Currently, photovoltaic (PV) modules are encapsulated with solar cells using elastic EVA film, which is then bonded together with upper and lower protective materials to form the PV module. EVA composite films can effectively mitigate the PID phenomenon (particulate impaction), but because solar PV modules are installed outdoors in harsh environments, single-layer EVA composite films are difficult to adapt to the complex and challenging outdoor conditions. Therefore, multi-layer EVA composite films are increasingly widely used. Double-layer EVA composite films with antioxidant capabilities offer advantages such as long lifespan and stable protective effects. Most existing EVA films are single-layer films, and the performance of single-layer EVA films is difficult to improve. While composite films offer superior performance, multi-layer structures are prone to delamination or misalignment, which is detrimental to the use of PV modules.

[0003] During EVA film production, excessively high temperatures after film extrusion cause it to stick to the roller surface. Stretching the film at this point inevitably alters its shrinkage rate, affecting film quality. Therefore, it's necessary to lower the roller surface temperature to reduce the film temperature. However, lowering the temperature leads to condensation on the roller surface, causing watermarks on the film and impacting product quality. Simultaneously lowering the temperature and humidity throughout the entire workshop would significantly increase production costs, with unsatisfactory results.

[0004] Existing technologies offer some solutions, such as patent CN109531893A, which provides an EVA film dehumidification device. This device uses components such as a housing and roller assembly, along with large and small air outlet pipes, to achieve the purpose of dehumidifying the EVA surface. However, this patent is prone to causing deformation of the high-temperature EVA film during the exhaust process. The inventor believes that there is still much room for improvement.

[0005] For example, patent KR102031977B1 provides a device for producing EVA film. The water provided by the device can be recycled, and the adhesive can be easily bonded to the bottom layer. It has the advantages of low construction cost, excellent waterproof effect and durability. However, the patent is prone to problems such as film loosening during the production process. The inventor believes that there is still a lot of room for improvement. Summary of the Invention

[0006] In order to achieve the purpose of tensioning the adhesive film during the conveying process and to achieve rapid cooling and molding of the adhesive film during the conveying process, the present invention provides a double-sided embossed EVA elastic composite adhesive film for photovoltaic modules. The composite adhesive film has a composite layered structure, including but not limited to multiple adhesive film layers, with solar cells for photovoltaic modules disposed between the adhesive film layers, and raised strips disposed around the solar cells, with embossed design on the sides of the raised strips.

[0007] In this invention, the adhesive film production device includes an adhesive film and a conveying roller for conveying the adhesive film. Heat dissipation components are provided on the upper and lower sides of the conveying roller, cleaning components are provided on the upper and lower sides of the adhesive film, and a pressing component is provided on one side of the cleaning components.

[0008] Furthermore, the heat dissipation components in this device can solve the problem of uneven surface temperature of the adhesive film during production. At the same time, the adhesive film needs to be cooled and shaped during production to facilitate subsequent operations such as traction and spreading.

[0009] In this invention, a tensioning component is provided on the outer side of the conveyor roller. The tensioning component is located below the conveyor roller and includes a base. Supports are connected to the left and right sides of the base. A plate is connected to one end of the support. The plate is an arc-shaped plate. A first spring is fixedly connected to the bottom of the plate, and the other end of the first spring is fixedly connected to the support. Multiple rolling substrates are arranged in an array on the upper surface of the plate.

[0010] Furthermore, the tensioning components are fitted onto the conveyor rollers. When the adhesive film is laid on multiple conveyor rollers, it needs to adhere to the rollers, thus exerting pressure on them. Specifically, when the film is above the rollers, it exerts pressure on the lower rollers, and when it is below the rollers, it exerts pressure on the upper rollers. With the tensioning components in place, they provide support to the conveyor rollers, and the rolling base abuts against the rollers without interfering with their operation. Multiple tensioning components are installed on the conveyor rollers, each with a support component at its bottom. When the adhesive film presses down on the conveyor rollers, the vibrations caused by the rollers' rotation are received by the first spring and transmitted to the conveyor rollers via the spring's feedback force, ensuring that the conveyor rollers do not easily shift during operation. Furthermore, the relatively rotating rolling base can clean the surface of the conveyor roller because the continuous rolling contact between the two makes it easy to scrape off the debris attached to the surface of the rolling base. In addition, there is a gap at the connection between the rolling base and the plate, which allows the rolling base to move up and down a small distance relative to the plate, thus adapting to rotating rollers of different sizes.

[0011] Furthermore, a first spring is connected below the plate. The design of the first spring allows the contact area between the conveyor roller and the rolling substrate to be changed by altering the position of the conveyor roller. At the same time, the pressure on the first spring is limited, avoiding excessive tension. In addition, the rolling substrate is made of flexible material. When it comes into contact with the conveyor roller, the surface of the rolling substrate changes, thereby expanding the contact area and providing more comprehensive support. This can prevent the formation of small gaps between the roller and the adhesive film due to changes in centrifugal force during the rotation of the conveyor roller.

[0012] In this invention, heat dissipation components are arranged on the upper and lower sides of the adhesive film, and elastic elements are provided between the heat dissipation components. Each heat dissipation component includes a cavity, and a flow guiding component is fixedly connected above the cavity. The heat dissipation components are connected by elastic elements, and each elastic element includes an elastic rod with a second spring sleeved on it. Multiple connecting rods are provided on the side of the elastic element.

[0013] The heat dissipation components cool the adhesive film using air cooling. The connecting rods on the side of the elastic rod are interconnected to form a parallelogram shape. At the same time, the second spring and one end of the elastic rod are fixedly connected to the cavity. Another heat dissipation component has an opening on the side of the cavity through which the elastic rod passes. The other end of the elastic rod is fixedly connected to a hydraulically driven telescopic rod. In addition, the connecting rod is fixedly connected to the cavity to enhance the stability of the connection. Multiple heat dissipation components can move one side of the cavity by extending and retracting the telescopic rod at one end of the elastic element. The parallelogram formed by the connecting rods is driven by the movement of the leftmost cavity, causing the right side of the cavity to move, thus achieving lateral movement. This enhances the cooling treatment of different areas of the adhesive film and avoids the problem of uneven surface temperature of the adhesive film.

[0014] In this invention, the flow guiding component includes a flow guiding substrate, a flow guiding channel is provided in the middle of the flow guiding substrate, a first mesh is provided at the top of the flow guiding channel, first flow guiding plates are provided on both sides of the first mesh, second flow guiding plates are fixedly connected to the left and right sides of the flow guiding channel, an airbag is provided between the second flow guiding plates, the second flow guiding plates are connected to each other through the airbag, a second mesh is provided on the upper surface of the flow guiding substrate, and a second mesh is provided below the second flow guiding plates.

[0015] In this invention, the cavity includes a motor located at the bottom, a fan assembly connected to the output end of the motor, an air guide base located above the fan assembly, and the air guide base located inside the airflow channel.

[0016] Furthermore, multiple square exhaust vents are provided on one side of the cavity, located below the fan assembly. When the fan assembly is operating, it blows air outwards. When the fan assembly's rotational power is low, most of the airflow is blown out through the first mesh. The air guide base within the guide channel has multiple arc-shaped segments. When the airflow avoids flowing along the air guide base, it easily disrupts the airflow with a certain trajectory, forming turbulence before it is discharged from the first mesh. The first guide vane on the side of the first mesh oscillates under the action of the turbulent airflow. The airflow is also affected by the first and second guide vanes, as well as the vertically flowing airflow discharged from the first mesh, forming an inclined airflow. This inclined airflow sweeps across the surface of the adhesive film, increasing the contact area between the airflow and the adhesive film, thus achieving rapid cooling. The purpose is to avoid the deformation of the adhesive film caused by directly blowing air onto a certain area of ​​the film surface. In addition, the inclined surface of the air guide substrate helps to further increase the flow rate of the exhaust air, which can more quickly remove the temperature of the adhesive film surface for cooling. Furthermore, the inclined airflow has a low probability of causing adhesive film deformation. When the power of the fan assembly increases, the exhaust speed of the airflow is also increased, and some airflow can flow into the airbag fixedly connected to the second guide plate. After the airbag is inflated, it expands, and the second guide plate is affected by this and presses down to cover the surface of the second mesh, preventing a large amount of airflow from being discharged from the second mesh and affecting the direction of airflow. Since the flow rate of airflow discharged from the second mesh is reduced, most of the airflow is discharged from the first mesh, which concentrates the airflow, improves the cooling effect, and helps to expand the coverage area of ​​the airflow.

[0017] In this invention, the cleaning assembly includes a fixed plate, a main shaft that can rotate relative to the fixed plate is provided on one side, the main shaft is welded from three base pieces, the main shaft is subjected to torsion treatment, and a brush is provided on the surface of the main shaft.

[0018] Furthermore, after the main shaft of the cleaning assembly is twisted, the base surface of the main shaft is streamlined and brushes are arranged on its surface. When the main shaft rotates, it drives the brushes to scrape away debris covering the surface of the adhesive film. The scattered debris can fall into the arc-shaped grooves left between the bases, preventing it from being further scattered in the air.

[0019] In this invention, the pressing assembly is disposed on the upper and lower sides of the adhesive film. The pressing assembly includes at least two rollers that are in contact with the surface of the adhesive film. The pressing assembly can be used to shape the adhesive film.

[0020] Furthermore, the pressing component is located at the tail end to ensure that the thickness of the adhesive film is always controlled within a preset error range, and a certain area on the adhesive film that exceeds the predetermined value can be further compressed under the action of the pressing component.

[0021] Compared to existing technologies, the advantages of this invention are as follows: The feedback force of the first spring is transmitted to the conveyor roller, ensuring that the conveyor roller is not easily displaced during operation. Furthermore, the relatively rotating rolling substrate can clean the surface of the conveyor roller; the continuous rolling contact between the two easily removes debris adhering to the surface of the rolling substrate. A gap is left at the connection between the rolling substrate and the plate, allowing the rolling substrate to move vertically a short distance relative to the plate, thus adapting to rotating rollers of different sizes. It can more quickly remove heat from the surface of the adhesive film for cooling. In addition, the inclined airflow reduces the probability of adhesive film deformation. A fan assembly is provided to increase the exhaust speed of the airflow. The first and second guide vanes influence the direction of airflow, concentrating the airflow, improving the cooling effect, and facilitating a wider airflow coverage area. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the film production process involved in the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure between the conveyor roller and the tensioning assembly involved in the present invention;

[0024] Figure 3 This is a schematic diagram of the tensioning component structure involved in the present invention;

[0025] Figure 4 This is a schematic diagram of the heat dissipation component structure involved in the present invention;

[0026] Figure 5 This is a cross-sectional view of the heat dissipation component involved in the present invention;

[0027] Figure 6 This is a schematic diagram of the flow guiding component structure involved in the present invention;

[0028] Figure 7 This is a schematic diagram of the cleaning component structure involved in the present invention.

[0029] Explanation of reference numerals in the attached diagram: 1-Adhesive film; 2-Conveyor roller; 3-Heat dissipation assembly; 4-Cleaning assembly; 5-Pressure assembly;

[0030] 21-Tensioning assembly; 211-Base; 212-Bracket; 213-Plate; 214-Rolling base; 215-First spring; 31-Guide assembly; 311-First guide vane; 312-First mesh; 313-Airbag; 314-Second guide vane; 315-Second mesh; 316-Guide base plate; 317-Guide channel; 32-Cavity; 321-Motor; 322-Fan assembly; 323-Air guide base; 33-Elastic element; 34-Elastic rod; 341-Second spring; 35-Connecting rod; 41-Fixing plate; 42-Main shaft; 43-Brush. Detailed Implementation

[0031] Example 1:

[0032] This invention provides a double-sided embossed EVA elastic composite film for photovoltaic modules. The composite film has a composite layered structure, including but not limited to multiple film layers. A solar cell for the photovoltaic module is disposed between the film layers. The solar cell has raised strips around its perimeter, and the sides of the raised strips have an embossed design.

[0033] refer to Figure 1 As shown, in this invention, the adhesive film production device includes an adhesive film 1 and a conveying roller 2 for conveying the adhesive film 1. Heat dissipation components 3 are provided on the upper and lower sides of the conveying roller 2, cleaning components 4 are provided on the upper and lower sides of the adhesive film 1, and a pressing component 5 is provided on one side of the cleaning component 4.

[0034] Furthermore, the heat dissipation component 3 provided in this device can solve the problem of uneven surface temperature of the adhesive film 1 during production. At the same time, the adhesive film 1 needs to be cooled and shaped during production to facilitate subsequent operations such as traction and spreading.

[0035] refer to Figures 2-3 As shown, in this invention, a tensioning component 21 is abutted against the outer side of the conveyor roller 2. The tensioning component 21 is located below the conveyor roller 2. The tensioning component 21 includes a base 211. Supports 212 are connected to the left and right sides of the base 211. A plate 213 is connected to one end of the support 212. The plate 213 is an arc-shaped plate. A first spring 215 is fixedly connected to the bottom of the plate 213. The other end of the first spring 215 is fixedly connected to the support 212. Multiple rolling bases 214 are arranged in an array on the upper surface of the plate 213.

[0036] refer to Figures 2-3As shown, the tensioning assembly 21 is further configured to adhere to the conveyor roller 2. When the adhesive film 1 is laid on multiple conveyor rollers 2, since the adhesive film 1 needs to adhere to the conveyor roller 2, the adhesive film 1 exerts a certain pressure on the conveyor roller 2. Specifically, when the adhesive film 1 is above the conveyor roller 2, it exerts pressure on the lower part; when the adhesive film 1 is below the conveyor roller 2, it exerts pressure on the upper part. After the tensioning assembly 21 is set, it can provide support force for the conveyor roller 2, and the rolling base 214 abuts against the conveyor roller 2, without interfering with the operation of the conveyor roller 2. Multiple tensioning assemblies 21 are set on the conveyor roller 2, and a support component is set at the bottom of the tensioning assembly 21 for support. When the adhesive film 1 presses down on the conveyor roller 2, the vibration caused by the rotation of the conveyor roller 2 can be received by the first spring 215 and transmitted to the conveyor roller 2 through the feedback force of the first spring 215, so as to ensure that the conveyor roller 2 is not easily displaced during operation. Furthermore, the relatively rotating rolling base 214 can clean the surface of the conveyor roller 2 because the continuous rolling contact between the two makes it easy to scrape off the debris attached to the surface of the rolling base 214. In addition, there is a gap at the connection between the rolling base 214 and the plate 213, which allows the rolling base 214 to move up and down a small distance relative to the plate 213, thereby adapting to rotating rollers 2 of different sizes.

[0037] Furthermore, a first spring 215 is connected below the plate 213. The design of the first spring 215 allows the contact area between the conveyor roller 2 and the rolling base 214 to be changed by changing the position of the conveyor roller 2. At the same time, the pressure of the first spring 215 is limited, avoiding excessive tension. In addition, the rolling base 214 is made of flexible material. When it comes into contact with the conveyor roller 2, the surface of the rolling base 214 changes, thereby expanding the contact area and providing more comprehensive support. This can prevent the formation of small gaps between the conveyor roller 2 and the adhesive film 1 due to changes in its own centrifugal force during the rotation of the conveyor roller 2.

[0038] Example 2:

[0039] The difference between this embodiment and Embodiment 1 is that, referring to... Figures 4-5 As shown, in this invention, heat dissipation components 3 are arranged on the upper and lower sides of the adhesive film 1, and elastic members 33 are provided between the heat dissipation components 3. Each heat dissipation component 3 includes a cavity 32, and a flow guiding component 31 is fixedly connected above the cavity 32. The heat dissipation components 3 are connected to each other through elastic members 33. Each elastic member 33 includes an elastic rod 34, on which a second spring 341 is sleeved. Multiple connecting rods 35 are provided on the side of the elastic member 33.

[0040] Furthermore, the heat dissipation assembly 3 cools the adhesive film 1 through air cooling. The connecting rods 35 on the side of the elastic rod 34 are interconnected to form a parallelogram shape. At the same time, the second spring 341 and one end of the elastic rod 34 are fixedly connected to the cavity 32. The cavity side of another heat dissipation assembly 3 has an opening, and the elastic rod 34 passes through the cavity 32. The other end of the elastic rod 34 is fixedly connected to the hydraulically driven telescopic rod. In addition, the connecting rod 35 is fixedly connected to the cavity 32 to enhance the stability of the connection. The multiple heat dissipation assemblies 3 can move one side of the cavity 32 by the extension and retraction of the telescopic rod at one end of the elastic element 33. The parallelogram formed between the connecting rods 35 is driven by the movement of the leftmost cavity 32, which causes the right side of the cavity 32 to move, thereby achieving lateral movement. This strengthens the cooling treatment of different areas of the adhesive film 1 and avoids the problem of uneven surface temperature of the adhesive film 1.

[0041] refer to Figures 4-6 As shown, in this invention, the flow guiding component 31 includes a flow guiding substrate 316, a flow guiding channel 317 is provided in the middle of the flow guiding substrate 316, a first mesh 312 is provided at the top of the flow guiding channel 317, first flow guiding plates 311 are provided on both sides of the first mesh 312, second flow guiding plates 314 are fixedly connected to the left and right sides of the flow guiding channel 317, an airbag 313 is provided between the second flow guiding plates 314, and the second flow guiding plates 314 are connected by the airbag 313. A second mesh 315 is provided on the upper surface of the flow guiding substrate 316, and a second mesh 315 is provided below the second flow guiding plates 314.

[0042] refer to Figure 5 As shown, in this invention, the cavity 32 includes a motor 321 disposed at the bottom, a fan assembly 322 connected to the output end of the motor 321, an air guide base 323 disposed above the fan assembly 322, and the air guide base 323 disposed inside the air guide channel 317.

[0043] refer to Figures 5-6As shown, the fan assembly 322 blows air outward. When the fan assembly 322 has a low rotational power, most of the airflow is blown out from the first mesh 312. The air guide base 323 in the guide channel 317 has multiple arc-shaped segments. When the airflow avoids flowing along the air guide base 323, it easily disrupts the airflow with a certain flow trajectory, forming turbulence before being discharged from the first mesh 312. The first guide vane 311 on the side of the first mesh 312 swings under the action of the turbulent airflow. The airflow is also affected by the first guide vane 311, the second guide vane 314, and part of the vertically flowing airflow discharged from the first mesh 312, forming an inclined airflow. The inclined airflow sweeps the surface of the adhesive film 1, increasing the contact area between the airflow and the adhesive film 1, which can achieve the purpose of rapid cooling, while avoiding damage to the adhesive film 1. Direct air blowing on a certain part of the surface can easily cause deformation of the adhesive film. In addition, the inclined surface of the air guide substrate 323 helps to further increase the flow rate of the exhaust air, which can more quickly remove the temperature of the adhesive film 1 surface to achieve cooling. Furthermore, the inclined airflow has a low probability of causing adhesive film deformation. When the power of the fan assembly 322 increases, the exhaust speed of the airflow is also increased, and some airflow can flow into the air bag 313 fixedly connected to the second guide plate 314. After the air bag 313 is inflated, it expands. The second guide plate 314 is affected by this and presses down to cover the surface of the second mesh 315, preventing a large amount of airflow from the second mesh 315 from affecting the direction of airflow. Since the flow rate of airflow discharged from the second mesh 315 is reduced, most of the airflow is discharged from the first mesh 312, which concentrates the airflow, improves the cooling effect, and helps to expand the coverage of the airflow.

[0044] Example 3:

[0045] The difference between this embodiment and Embodiment 1 is that, referring to... Figure 7 As shown, in this invention, the cleaning component 4 includes a fixed plate 41, and a main shaft 42 that can rotate relative to the fixed plate 41 is provided on one side. The main shaft 42 is welded from three base pieces. The main shaft 42 is subjected to torsion treatment, and a brush 43 is provided on the surface of the main shaft 42.

[0046] Furthermore, after the main shaft 42 in the cleaning assembly 4 is twisted, the base surface constituting the main shaft 42 is streamlined and brushes 43 are arranged on its surface. When the main shaft 42 rotates, it drives the brushes 43 to scrape away debris and other debris covering the surface of the adhesive film 1. The scattered debris can fall into the arc-shaped grooves left between the bases, preventing it from being further scattered in the air.

[0047] In this invention, the pressing component 5 is disposed on the upper and lower sides of the adhesive film 1. The pressing component 5 includes at least two rollers, which are attached to the surface of the adhesive film 1. The pressing component 5 can be used to shape the adhesive film 1.

[0048] Furthermore, the pressing component 5 is located at the tail end to ensure that the thickness of the adhesive film 1 is always controlled within a preset error range, and a certain area on the adhesive film 1 that exceeds the predetermined value can be further compressed under the action of the pressing component 5.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A double-sided embossed EVA elastic composite film for photovoltaic modules, characterized in that, The composite film has a composite layered structure, comprising multiple film layers, each film layer including a buffer layer, a barrier layer, and an adhesive layer. A solar cell for a photovoltaic module is disposed between the film layers, and the solar cell has raised strips around its perimeter, with embossed designs on the sides of the raised strips. The adhesive film production device includes an adhesive film (1) and a conveyor roller (2) for conveying the adhesive film (1). A tensioning component (21) is abutted against the outside of the conveyor roller (2). The tensioning component (21) is located below the conveyor roller (2). The tensioning component (21) includes a base (211). A bracket (212) is connected to the left and right sides of the base (211). A plate (213) is connected to one end of the bracket (212). The plate (213) is an arc-shaped plate. A first spring (215) is fixedly connected to the bottom of the plate (213). The other end of the first spring (215) is fixedly connected to the bracket (212). Multiple rolling substrates (214) are arranged in an array on the upper surface of the plate (213). Heat dissipation components (3) are provided on the upper and lower sides of the conveying roller (2). The heat dissipation components (3) are arranged on the upper and lower sides of the adhesive film (1). An elastic element (33) is provided between the heat dissipation components (3). The heat dissipation components (3) include a cavity (32). A flow guide component (31) is fixedly connected above the cavity (32). The heat dissipation components (3) are connected to each other through the elastic element (33). The elastic element (33) includes an elastic rod (34). A second spring (341) is sleeved on the elastic rod (34). Multiple connecting rods (35) are provided on the side of the elastic element (33). The heat dissipation assembly (3) cools the film (1) by air cooling. The connecting rods (35) on the side of the elastic rod (34) are connected to each other to form a parallelogram shape. At the same time, one end of the second spring (341) and the elastic rod (34) is fixedly connected to the cavity (32). The cavity side of the other heat dissipation assembly (3) has an opening and the elastic rod (34) passes through the cavity (32). The other end of the elastic rod (34) is fixedly connected to the hydraulically driven telescopic rod.

2. An adhesive film production apparatus for producing the double-sided embossed EVA elastic composite adhesive film for photovoltaic modules as described in claim 1, characterized in that, The adhesive film (1) is provided with cleaning components (4) on the upper and lower sides, and a pressing component (5) is provided on one side of the cleaning components (4).

3. The adhesive film production apparatus for producing a double-sided embossed EVA elastic composite adhesive film for photovoltaic modules according to claim 2, characterized in that, The flow guiding component (31) includes a flow guiding substrate (316), a flow guiding channel (317) is provided in the middle of the flow guiding substrate (316), a first mesh (312) is provided at the top of the flow guiding channel (317), a first flow guiding plate (311) is provided on both sides of the first mesh (312), a second flow guiding plate (314) is fixedly connected to the left and right sides of the flow guiding channel (317), an airbag (313) is provided between the second flow guiding plates (314), the second flow guiding plates (314) are connected by the airbag (313), and a second mesh (315) is provided on the upper surface of the flow guiding substrate (316).

4. The adhesive film production apparatus for producing a double-sided embossed EVA elastic composite adhesive film for photovoltaic modules according to claim 3, characterized in that, The cavity (32) includes a motor (321) located at the bottom. The output end of the motor (321) is connected to a fan assembly (322). An air guide base (323) is located above the fan assembly (322) and is located inside the air guide channel (317).

5. The adhesive film production apparatus for producing a double-sided embossed EVA elastic composite adhesive film for photovoltaic modules according to claim 2, characterized in that, The cleaning assembly (4) includes a fixed plate (41), and a main shaft (42) that can rotate relative to the fixed plate (41) is provided on one side. The main shaft (42) is welded from three base pieces. The main shaft (42) is subjected to torsion treatment. A brush (43) is provided on the surface of the main shaft (42).

6. The adhesive film production apparatus for producing a double-sided embossed EVA elastic composite adhesive film for photovoltaic modules according to claim 2, characterized in that, The pressing assembly (5) includes pressure rollers disposed on the upper and lower sides of the adhesive film (1). The pressing assembly (5) includes at least two rollers that are in contact with the surface of the adhesive film (1). The pressing assembly (5) is used to shape the adhesive film (1).

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