Photovoltaic laminated buffer board and photovoltaic lamination device

Abstract

This application relates to a photovoltaic laminated buffer board and a photovoltaic lamination device. The photovoltaic laminated buffer board includes a board body and a buffer layer, which are stacked on top of the board body. The buffer layer has an air cavity and an inflation hole, which are connected to each other. When the photovoltaic laminated buffer board is laminated with a photovoltaic module, air is injected into the air cavity through the inflation hole, so that the inflated buffer layer fits over the outer periphery of the photovoltaic module. In this way, the inflated buffer layer can bear part of the pressure, which can prevent excessive pressure on the edges of the photovoltaic module, thereby avoiding warping, microcracks, or bubbles caused by overpressure, thus improving the yield of the photovoltaic module. In addition, when the photovoltaic laminated buffer board is laminated with the photovoltaic module, the operator can adjust the amount of air in the inner cavity according to the state of the EVA film, so that the air pressure in the air cavity can be dynamically adjusted according to the process stage, thereby improving the yield of the photovoltaic module.

Description

Technical Field

[0001] This application relates to the field of photovoltaic production technology, and in particular to a photovoltaic laminated buffer plate and a photovoltaic lamination device. Background Technology

[0002] Photovoltaic module lamination is a key process in photovoltaic module production. Its main purpose is to tightly bond multiple layers of materials, such as glass, EVA (Ethylene Vinyl Acetate Copolymer), solar cells, and backsheet, together through hot pressing to form a photovoltaic module with stable structure and excellent performance.

[0003] During the lamination process of photovoltaic modules, a metal lamination frame is usually placed around the perimeter of the photovoltaic module, and a silicone sheet is used to buffer the pressure. However, the metal lamination frame is in rigid contact with the photovoltaic module, and the pressure is concentrated at the edge of the photovoltaic module, which can easily cause problems such as warping, microcracks or bubbles. At the same time, it is impossible to adjust the lamination pressure according to the changes in the state of the EVA film. Utility Model Content

[0004] Therefore, it is necessary to provide a photovoltaic lamination buffer board and a photovoltaic lamination device to prevent the edges of photovoltaic modules from warping, microcracks or bubbles due to overpressure. At the same time, the lamination pressure can be adjusted according to the changes in the state of the EVA film, which is beneficial to improving the yield of photovoltaic modules.

[0005] In a first aspect, this application provides a photovoltaic laminated buffer board, comprising:

[0006] Plate; and

[0007] A buffer layer is provided on the plate body. The buffer layer has an air cavity and an inflation hole. The air cavity is connected to the inflation hole. When the photovoltaic laminated buffer plate is laminated with the photovoltaic module, air is injected into the air cavity through the inflation hole so that the inflated buffer layer is fitted onto the outer periphery of the photovoltaic module.

[0008] In one embodiment, the buffer layer includes at least a first buffer module and a second buffer module, both of which are disposed along a first direction of the plate body. The first buffer module and the second buffer module are disposed opposite to and spaced apart from each other along a second direction of the plate body, and the first direction intersects the second direction.

[0009] In one embodiment, the first buffer module has at least two rows, the at least two rows of first buffer modules being spaced apart along the second direction; and / or, the second buffer module has at least two rows, the at least two rows of second buffer modules being spaced apart along the second direction.

[0010] In one embodiment, the buffer layer further includes a third buffer module and a fourth buffer module, the third buffer module and the fourth buffer module being disposed opposite to and spaced apart in the first direction, the third buffer module and the fourth buffer module being disposed between the first buffer module and the second buffer module and disposed along the second direction, the first buffer module, the second buffer module, the third buffer module and the fourth buffer module enclosing a lamination space for adaptation to at least one of the photovoltaic modules.

[0011] In one embodiment, the third buffer module has at least two rows, and the at least two rows of third buffer modules are spaced apart along the first direction; and / or, the fourth buffer module has at least two rows, and the at least two rows of fourth buffer modules are spaced apart along the first direction.

[0012] In one embodiment, the buffer layer further includes at least one fifth buffer module disposed within the lamination space and arranged along the second direction to divide the lamination space into at least two lamination cavities adapted to a single photovoltaic module.

[0013] In one embodiment, the buffer layer includes at least a first buffer module, a second buffer module, a third buffer module, and a fourth buffer module. The first buffer module, the second buffer module, the third buffer module, and the fourth buffer module are all right-angled. The first buffer module, the second buffer module, the third buffer module, and the fourth buffer module are arranged in an array to form a laminated space for adaptation to at least one of the photovoltaic modules.

[0014] In one embodiment, the plate includes a first plate disposed on one side of the buffer layer. When the photovoltaic laminated buffer plate is laminated with the photovoltaic module, the first plate is disposed away from the photovoltaic module. The thickness of the first plate at the connection point with the buffer layer is greater than the thickness of the other parts.

[0015] In one embodiment, the plate includes a first plate and a second plate, which are respectively disposed on opposite sides of the buffer layer. When the photovoltaic laminated buffer plate is laminated with the photovoltaic module, the first plate is positioned away from the photovoltaic module, and the second plate is attached to the photovoltaic module. The first plate includes a silicone sheet and a glass fiber mesh, which are composite molded together. And / or, the second plate includes a silicone sheet, the surface of which is dispersed with silicon carbide micropowder.

[0016] Secondly, this application also provides a photovoltaic lamination device, including the photovoltaic lamination buffer plate of any of the above claims.

[0017] The aforementioned photovoltaic laminate buffer board and photovoltaic lamination device, when laminating the photovoltaic laminate buffer board with the photovoltaic module, inflate the air cavity through the inflation hole. During the inflation process, the buffer layer is gradually pressed down and located on the outer periphery of the photovoltaic module. Inflation of the air cavity stops when the height of the buffer layer is greater than or equal to the thickness of the photovoltaic module. Simultaneously, under the action of vacuum negative pressure, air bubbles inside the photovoltaic module can be quickly expelled. In this way, the inflated buffer layer can bear part of the pressure, preventing excessive pressure on the edges of the photovoltaic module, thus avoiding warping, microcracks, or air bubbles caused by overpressure, thereby improving the yield of the photovoltaic module. Furthermore, when the photovoltaic laminate buffer board is laminated with the photovoltaic module, the operator can adjust the inflation volume in the inner cavity according to the changes in the state of the EVA film, allowing the air pressure in the air cavity to be dynamically adjusted according to the process stage, thereby improving the yield of the photovoltaic module. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a photovoltaic laminated buffer plate according to an embodiment of this application.

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 3 for Figure 1 The diagram shows a partial structural schematic of the photovoltaic laminated buffer plate.

[0021] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.

[0022] Figure 5 for Figure 3 A magnified view of a portion of point C.

[0023] Figure 6 This is a schematic diagram of the partial structure of the photovoltaic laminated buffer plate and its lamination with the photovoltaic module according to an embodiment of this application.

[0024] Figure 7 This is a schematic diagram of the structure of a photovoltaic laminated buffer plate and the structure of a photovoltaic module laminated with the photovoltaic module, according to one embodiment of this application.

[0025] Figure 8 This is a schematic diagram of the partial structure of the photovoltaic laminated buffer plate and its lamination with the photovoltaic module, according to another embodiment of this application.

[0026] Explanation of icon numbers:

[0027] 10. Photovoltaic laminated buffer board; 11. Board body; 111. First board body; 112. Second board body; 12. Buffer layer; 121. Air cavity; 122. Inflation hole; 123. First buffer module; 124. Second buffer module; 125. Third buffer module; 126. Fourth buffer module; 127. Fifth buffer module; 128. Lamination space; 1281. Lamination cavity; 13. Measuring component; 20. Photovoltaic module. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] See Figure 1 and Figure 2 The photovoltaic laminated buffer board 10 provided in one embodiment of this application includes a board body 11 and a buffer layer 12. The buffer layer 12 is disposed on the board body 11.

[0030] See Figure 3 and Figure 4 The buffer layer 12 is provided with an air cavity 121 and an inflation hole 122, and the air cavity 121 and the inflation hole 122 are connected. (See reference...) Figure 6 When the photovoltaic laminated buffer plate 10 is laminated with the photovoltaic module 20, air is injected into the air cavity 121 through the air inlet 122 so that the inflated buffer layer 12 is located on the outer periphery of the photovoltaic module 20.

[0031] When the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, air is injected into the air cavity 121 through the air inlet 122. During the inflation process, the buffer layer 12 is gradually pressed down and located on the outer periphery of the photovoltaic module 20. When the height of the buffer layer 12 is greater than or equal to the thickness of the photovoltaic module 20, the inflation into the air cavity 121 is stopped. At the same time, under the action of vacuum negative pressure, air bubbles in the photovoltaic module 20 can be quickly expelled. In this way, the inflated buffer layer 12 can bear part of the pressure, which can prevent excessive pressure on the edge of the photovoltaic module 20, thereby avoiding warping, microcracks or air bubbles at the edge of the photovoltaic module 20 due to overpressure, thus improving the yield of the photovoltaic module 20.

[0032] In addition, when the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, the operator can adjust the amount of air in the air chamber 121 according to the state change of the EVA film, so that the air pressure in the air chamber 121 can be dynamically adjusted with the process stage, thereby improving the yield of the photovoltaic module 20.

[0033] In one embodiment, see Figure 3 The buffer layer 12 includes at least a first buffer module 123 and a second buffer module 124. The first buffer module 123 and the second buffer module 124 are disposed along a first direction of the plate 11, and are positioned opposite each other and spaced apart along a second direction of the plate 11. The first direction and the second direction intersect. Optionally, the first direction and the second direction are perpendicular. X represents the first direction, and Y represents the second direction.

[0034] Specifically, the plate 11 has a first side and a second side, which are opposite to each other and spaced apart in a second direction. A first buffer module 123 is disposed on the first side, and a second buffer module 124 is disposed on the second side.

[0035] When the photovoltaic laminate buffer board 10 is laminated with the photovoltaic module 20, air is injected into the first buffer module 123 and the second buffer module 124. After inflation, the first buffer module 123 and the second buffer module 124 are located on the outer sides of opposite sides of the photovoltaic module 20. In this way, the inflated first buffer module 123 and the second buffer module 124 can withstand part of the pressure, preventing warping, microcracks or bubbles from occurring at the four corners and edges of the photovoltaic module 20 due to overpressure, thereby improving the yield of the photovoltaic module 20.

[0036] In one embodiment, see Figure 3 and Figure 4 The first buffer module 123 has at least two rows, and the at least two rows of the first buffer module 123 are spaced apart along the second direction. It is understood that at least two rows of the first buffer module 123 are provided on the first side. And / or, the second buffer module 124 has at least two rows, and the at least two rows of the second buffer module 124 are spaced apart along the second direction. It is understood that at least two rows of the second buffer module 124 are provided on the second side.

[0037] When the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, the first buffer module 123 and the second buffer module 124 at different positions can be inflated according to the specifications of the photovoltaic module 20, so that the spacing between the inflated first buffer module 123 and the second buffer module 124 matches the size of the photovoltaic module 20 in the second direction. With this configuration, the photovoltaic laminate buffer plate 10 can be adapted to photovoltaic modules 20 of different specifications, improving its applicability. Furthermore, for photovoltaic modules 20 of different specifications, only the first buffer module 123 and the second buffer module 124 at different positions need to be inflated, eliminating the need for frequent replacement of the metal lamination frame. This reduces downtime, improves production efficiency, and also prevents the metal lamination frame from puncturing the photovoltaic laminate buffer plate 10 during replacement, thus extending its service life.

[0038] In one embodiment, see Figure 3 and Figure 4 The first buffer module 123 includes multiple first honeycomb cylinders, which are arranged side-by-side and interconnected in a first direction. (See reference...) Figure 3 and Figure 5 The second buffer module 124 includes multiple second honeycomb cylinders arranged side-by-side and interconnected in a first direction. When the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, the first and second honeycomb cylinders can effectively disperse the pressure, making the pressure distribution between the photovoltaic laminate buffer plate 10 and the photovoltaic module 20 more uniform. This avoids excessive pressure on the edges of the photovoltaic module 20, preventing problems such as bubbles and microcracks, and helps improve the yield of the photovoltaic module 20. In addition, the first buffer module 123 and the second buffer module 124 have good fatigue resistance.

[0039] Of course, in other embodiments, see [reference] Figure 6 Both the first buffer module 123 and the second buffer module 124 are strip-shaped and extend along the first direction.

[0040] In one embodiment, see Figure 3 The buffer layer 12 further includes a third buffer module 125 and a fourth buffer module 126. The third buffer module 125 and the fourth buffer module 126 are arranged opposite to each other and spaced apart in a first direction, and the third buffer module 125 and the fourth buffer module 126 are disposed between the first buffer module 123 and the second buffer module 124 and arranged along a second direction. It can be understood that the first buffer module 123, the second buffer module 124, the third buffer module 125 and the fourth buffer module 126 enclose a lamination space 128 for adaptation to at least one photovoltaic module 20.

[0041] Specifically, the plate 11 also has a third side and a fourth side, which are opposite to each other and spaced apart in the first direction. The third buffer module 125 is located on the third side, and the fourth buffer module 126 is located on the fourth side.

[0042] When the photovoltaic laminate buffer board 10 is laminated with the photovoltaic module 20, air is injected into the first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126. After inflation, the first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 are located on the outer periphery of the photovoltaic module 20. In this way, the first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 can withstand part of the pressure, preventing warping, microcracks, or bubbles at the four corners and edges of the photovoltaic module 20 due to overpressure, thereby improving the yield of the photovoltaic module 20.

[0043] In one embodiment, the third buffer module 125 has at least two rows, and the at least two rows of the third buffer module 125 are spaced apart along a first direction. It is understood that the third side has at least two rows of the third buffer module 125. And / or, the fourth buffer module 126 has at least two rows, and the at least two rows of the fourth buffer module 126 are spaced apart along a first direction. It is understood that the fourth side has at least two rows of the fourth buffer module 126.

[0044] When the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, the third buffer module 125 and the fourth buffer module 126 at different positions can be inflated according to the specifications of the photovoltaic module 20, so that the spacing between the inflated third buffer module 125 and the fourth buffer module 126 matches the size of the photovoltaic module 20 in the first direction. With this configuration, the photovoltaic laminate buffer plate 10 can be adapted to photovoltaic modules 20 of different specifications, improving its applicability. Furthermore, for photovoltaic modules 20 of different specifications, only the third buffer module 125 and the fourth buffer module 126 at different positions need to be inflated, eliminating the need for frequent replacement of the metal lamination frame. This reduces downtime, improves production efficiency, and also prevents the metal lamination frame from puncturing the photovoltaic laminate buffer plate 10 during replacement, thus extending its service life.

[0045] In one embodiment, see Figure 7 The buffer layer 12 also includes at least one fifth buffer module 127. The at least one fifth buffer module 127 is disposed between the third buffer module 125 and the fourth buffer module 126 and is arranged along the second direction to divide the lamination space 128 into at least two lamination cavities 1281 adapted to a single photovoltaic module 20. This arrangement ensures that each photovoltaic module 20 is surrounded by buffer modules, effectively preventing excessive pressure on the four corners and edges of the photovoltaic module 20, thus preventing warping, microcracks, or bubbles at the edges of the photovoltaic module 20 due to overpressure, thereby improving the yield of the photovoltaic module 20.

[0046] In one embodiment, see Figure 4 and Figure 5 The third buffer module 125 includes multiple third honeycomb cylinders, which are arranged side-by-side and interconnected in the second direction. The fourth buffer module 126 includes multiple fourth honeycomb cylinders, which are arranged side-by-side and interconnected in the second direction. The fifth buffer module 127 includes multiple fifth honeycomb cylinders, which are arranged side-by-side and interconnected in the second direction. When the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, the third, fourth, and fifth honeycomb cylinders can effectively disperse the pressure, making the pressure distribution between the photovoltaic laminate buffer plate 10 and the photovoltaic module 20 more uniform. This avoids excessive pressure on the edges of the photovoltaic module 20, preventing problems such as bubbles and microcracks, and improving the yield of the photovoltaic module 20. In addition, the third buffer module 125, fourth buffer module 126, and fifth buffer module 127 have good fatigue resistance.

[0047] Of course, in other embodiments, see [reference] Figure 7 The third buffer module 125, the fourth buffer module 126 and the fifth buffer module 127 are all strip-shaped, and all three extend along the second direction.

[0048] In one embodiment, see Figure 8 The buffer layer 12 includes at least a first buffer module 123, a second buffer module 124, a third buffer module 125, and a fourth buffer module 126. The first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 are arranged in an array to enclose at least one square lamination space 128. The first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 are respectively located at the four corners of the lamination space 128.

[0049] When the photovoltaic laminate buffer board 10 is laminated with the photovoltaic module 20, air is injected into the first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126. After inflation, the first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 are located at the corners of the photovoltaic module 20. In this way, the inflated first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 can bear part of the pressure at the four corners of the photovoltaic module 20, avoiding excessive pressure on the four corners of the photovoltaic module 20 and thus preventing damage to the four corners of the photovoltaic module 20.

[0050] Further, see Figure 8The first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 are all right-angled structures. After inflation, one right-angled side of each of the first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 is located outside an adjacent edge of the photovoltaic module 20, and the other right-angled side is located outside another adjacent edge of the photovoltaic module 20. In this way, the first buffer module 123, the second buffer module 124, the third buffer module 125, and the fourth buffer module 126 can not only bear part of the pressure at the four corners of the photovoltaic module 20, but also part of the pressure at the four edges of the photovoltaic module 20, thereby preventing excessive pressure on the four corners and four edges of the photovoltaic module 20.

[0051] In one embodiment, the height of the buffer layer 12 is 4mm to 10mm. Optionally, the height of the buffer layer 12 can be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. This configuration allows the photovoltaic laminate buffer board 10 to be laminated with different types of photovoltaic modules 20, thus expanding its applicability.

[0052] In one embodiment, the wall thickness of the air cavity 121 is 1mm to 2mm. Optionally, the wall thickness of the air cavity 121 can be 1mm, 1.5mm, or 2mm. With this configuration, the buffer layer 12 has a better supporting effect, while the photovoltaic laminate buffer plate 10 is not easily damaged.

[0053] In one embodiment, the width of the buffer layer 12 is 30cm to 40cm. Optionally, the lengths of the first buffer module 123 and the second buffer module 124 in the second direction, and the lengths of the third buffer module 125, the fourth buffer module 126, and the fifth buffer module 127 in the first direction are 30cm, 31cm, 32cm, 33cm, 34cm, 35cm, 36cm, 37cm, 38cm, 39cm, and 40cm, respectively.

[0054] In one embodiment, see Figure 3 The photovoltaic lamination buffer plate 10 also includes a measuring element 13, which measures the air pressure value inside the air cavity 121. During lamination, air is injected into the air cavity 121. During the inflation process, the measuring element 13 monitors the air pressure value inside the air cavity 121 in real time, and the height of the air cavity 121 can be determined based on the air pressure. If the air pressure value and height inside the air cavity 121 do not reach the predetermined range, air continues to be injected into the air cavity 121. If the air pressure value and height inside the air cavity 121 reach the predetermined range, the laminator feed is controlled. In addition, the amount of air injected into the air cavity 121 can be controlled based on the air pressure value to achieve a pressure fluctuation of less than 5%, so that air bubbles are less likely to form at the edges of the photovoltaic module 20, which is beneficial to improving the yield of the photovoltaic module 20.

[0055] In one embodiment, see Figure 1 and Figure 2 There are two plates 11, namely the first plate 111 and the second plate 112. The first plate 111 and the second plate 112 are respectively located on opposite sides of the buffer layer 12.

[0056] It should be noted that when the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, the first plate 111 is away from the photovoltaic module 20, and the second plate 112 is attached to the photovoltaic module 20.

[0057] In one embodiment, the first plate 111 comprises a silicone substrate and a glass fiber mesh, which are composite molded together. Optionally, the glass fiber mesh is 200 mesh, and the compressive strength of the first plate 111 is greater than or equal to 15 MPa. This configuration, combining the high modulus of the glass fiber mesh with the elasticity of the silicone, improves the tear resistance of the first plate 111 and reduces the risk of silicone tearing due to glass warping or pressure deviation during lamination. Simultaneously, the glass fiber mesh inhibits silicone molecular chain slippage, reducing the amount of silicone creep deformation and ensuring long-term stability of the lamination pressure.

[0058] In one embodiment, the second plate 112 includes a silicone sheet, the surface of which contains silicon carbide micropowder. Optionally, methyl vinyl silicone rubber (VMQ) is used as the substrate of the second plate 112, and silicon carbide micropowder is incorporated into the surface of the substrate of the second plate 112. The silicon carbide micropowder has a particle size of 5 μm to 8 μm and a mass fraction of 5%.

[0059] By incorporating silicon carbide micropowder into the surface of the silicone sheet, the silicon carbide micropowder can form a solid lubricating film on the surface of the silicone sheet, reducing the coefficient of friction. For example, the coefficient of friction of the second plate 112 in this embodiment can be reduced to 0.12, reducing sliding friction damage between the photovoltaic laminate buffer plate 10 and the photovoltaic module 20. Simultaneously, silicon carbide maintains stable physicochemical properties at high temperatures, allowing the second plate 112 to maintain good performance in high-temperature environments. In this embodiment, the temperature resistance of the second plate 112 reaches 180°C, covering the lamination process temperature range (room temperature to 150°C).

[0060] It should be noted that the core layer is made of the same material as the second plate 112.

[0061] In one embodiment, the thickness of the connection between the first plate 111 and the buffer layer 12 is greater than the thickness of the remaining portions. It is understood that the connection between the first plate 111 and the buffer layer 12 is thickened. Optionally, the thickness is 5 cm. This design prevents the photovoltaic laminate buffer plate 10 from deforming as a whole during inflation.

[0062] In one embodiment, the thickness of the second plate 112 is 3mm to 5mm. Optionally, the thickness of the second plate 112 is 3mm, 4mm, or 5mm. This configuration allows the second plate 112 to maintain sufficient elasticity to buffer pressure, while also ensuring that pressure is uniformly transmitted to the photovoltaic module 20, reducing the risk of bubbles and microcracks in the photovoltaic module 20 during lamination, and improving the yield of the photovoltaic module 20.

[0063] This application also provides a photovoltaic lamination device, including the photovoltaic lamination buffer plate 10 of any of the above embodiments.

[0064] In the aforementioned photovoltaic lamination device, when the photovoltaic lamination buffer plate 10 is laminated with the photovoltaic module 20, air is injected into the air chamber 121 through the air inlet 122. During the inflation process, the buffer layer 12 is gradually pressed down and positioned on the outer periphery of the photovoltaic module 20. Inflation of the air chamber 121 stops when the height of the buffer layer 12 is greater than or equal to the thickness of the photovoltaic module 20. Simultaneously, under the action of vacuum negative pressure, air bubbles inside the photovoltaic module 20 can be quickly expelled. Thus, the inflated buffer layer 12 can bear some of the pressure, preventing excessive pressure on the edges of the photovoltaic module 20, thereby avoiding warping, microcracks, or air bubbles at the edges of the photovoltaic module 20 due to overpressure, and improving the yield of the photovoltaic module 20.

[0065] In addition, when the photovoltaic laminate buffer plate 10 is laminated with the photovoltaic module 20, the operator can adjust the amount of air in the air chamber 121 according to the state change of the EVA film, so that the air pressure in the air chamber 121 can be dynamically adjusted with the process stage, thereby improving the yield of the photovoltaic module 20.

[0066] In one embodiment, the photovoltaic lamination device further includes a distance sensor for measuring the distance between the photovoltaic lamination buffer plate 10 and the photovoltaic module 20. When the local distance deviation between the photovoltaic lamination buffer plate 10 and the photovoltaic module 20 is greater than 0.2 mm, pressure compensation is performed on the air chamber 121, for example, the pressure compensation value is ±0.02 MPa.

[0067] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0068] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0072] 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.

[0073] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A photovoltaic laminated buffer board (10), characterized in that, include: Plate (11); and A buffer layer (12) is provided on the plate (11). The buffer layer (12) is provided with an air cavity (121) and an air inlet (122). The air cavity (121) is connected to the air inlet (122). When the photovoltaic laminated buffer plate (10) is laminated with the photovoltaic module (20), air is injected into the air cavity (121) through the air inlet (122) so that the inflated buffer layer (12) is fitted onto the outer periphery of the photovoltaic module (20).

2. The photovoltaic laminated buffer board (10) according to claim 1, characterized in that, The buffer layer (12) includes at least a first buffer module (123) and a second buffer module (124). The first buffer module (123) and the second buffer module (124) are both arranged along a first direction of the plate (11). The first buffer module (123) and the second buffer module (124) are arranged opposite to each other and spaced apart in a second direction of the plate (11). The first direction intersects the second direction.

3. The photovoltaic laminated buffer board (10) according to claim 2, characterized in that, The first buffer module (123) is provided with at least two rows, and the at least two rows of the first buffer modules (123) are spaced apart along the second direction; And / or, the second buffer module (124) is provided with at least two rows, the at least two rows of second buffer modules (124) being spaced apart along the second direction.

4. The photovoltaic laminated buffer board (10) according to claim 2, characterized in that, The buffer layer (12) further includes a third buffer module (125) and a fourth buffer module (126). The third buffer module (125) and the fourth buffer module (126) are arranged opposite to each other and spaced apart in the first direction. The third buffer module (125) and the fourth buffer module (126) are disposed between the first buffer module (123) and the second buffer module (124) and are arranged along the second direction. The first buffer module (123), the second buffer module (124), the third buffer module (125) and the fourth buffer module (126) enclose a lamination space (128) for adaptation to at least one of the photovoltaic modules (20).

5. The photovoltaic laminated buffer board (10) according to claim 4, characterized in that, The third buffer module (125) is provided with at least two rows, and the at least two rows of third buffer modules (125) are spaced apart along the first direction; And / or, the fourth buffer module (126) is provided with at least two rows, and the at least two rows of fourth buffer modules (126) are spaced apart along the first direction.

6. The photovoltaic laminated buffer board (10) according to claim 4, characterized in that, The buffer layer (12) further includes at least one fifth buffer module (127), which is disposed in the lamination space (128) and arranged along the second direction to divide the lamination space (128) into at least two lamination cavities (1281) adapted to a single photovoltaic module (20).

7. The photovoltaic laminated buffer board (10) according to claim 1, characterized in that, The buffer layer (12) includes at least a first buffer module (123), a second buffer module (124), a third buffer module (125), and a fourth buffer module (126). The first buffer module (123), the second buffer module (124), the third buffer module (125), and the fourth buffer module (126) are all right-angled. The first buffer module (123), the second buffer module (124), the third buffer module (125), and the fourth buffer module (126) are arranged in an array to enclose a laminated space (128) for adaptation to at least one of the photovoltaic modules (20).

8. The photovoltaic laminated buffer board (10) according to any one of claims 1 to 7, characterized in that, The plate (11) includes a first plate (111), which is disposed on one side of the buffer layer (12). When the photovoltaic laminated buffer plate (10) is laminated with the photovoltaic module (20), the first plate (111) is disposed away from the photovoltaic module (20). The thickness of the connection between the first plate (111) and the buffer layer (12) is greater than the thickness of the other parts.

9. The photovoltaic laminated buffer board (10) according to any one of claims 1 to 7, characterized in that, The plate (11) includes a first plate (111) and a second plate (112). The first plate (111) and the second plate (112) are respectively disposed on opposite sides of the buffer layer (12). When the photovoltaic laminated buffer plate (10) is laminated with the photovoltaic module (20), the first plate (111) is disposed away from the photovoltaic module (20), and the second plate (112) is attached to the photovoltaic module (20). The first plate (111) includes a silicone plate and a glass fiber mesh, wherein the silicone plate and the glass fiber mesh are composite molded together; And / or, the second plate (112) includes a silicone plate on the surface of which silicon carbide micropowder is dispersed.

10. A photovoltaic laminating device, characterized in that, Includes the photovoltaic laminated buffer plate (10) as described in any one of claims 1 to 9.

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