Adhesive film adsorption device and photovoltaic module production equipment

Abstract

The application relates to a kind of adhesive film adsorption devices and photovoltaic module production equipment.The adhesive film adsorption device is arranged at the discharge port of the adhesive film rectification machine of the photovoltaic module production equipment, the adhesive film rectification machine can transport the photovoltaic glass laid with the first adhesive film, the adhesive film adsorption device comprises: a high-voltage power supply;And electrostatic generating stick, arranged at the outlet of the adhesive film rectification machine and located above the first adhesive film, the electrostatic generating stick is electrically connected with the high-voltage power supply, the electrostatic generating stick is electrified to make the first adhesive film have electric charge, so that the first adhesive film is adsorbed on the photovoltaic glass under the action of electric charge.Such, the first adhesive film can be reliably fixed to the photovoltaic glass, avoid the first adhesive film slip relative to the photovoltaic glass, without using the way of fixing the adhesive film with soldering iron head, avoid the first adhesive film in the case of dirty, also avoid the first adhesive film appears the situation of bulge, guarantee the product quality of photovoltaic module, improve the yield of photovoltaic module.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module technology, and in particular to a film adsorption device and photovoltaic module production equipment. Background Technology

[0002] In the photovoltaic industry, the supply chain can be divided into upstream and downstream components: silicon, metallic silicon, polycrystalline silicon, silicon rods, silicon wafers, solar cells, modules, arrays, and power station systems. Power station systems consist of photovoltaic modules, foundations, support structures, combiner boxes, inverters, transformer substations, and finally, the power grid. Individual solar cells, due to their fragility and poor aging resistance, cannot be used directly as power sources; they need to be welded, connected in series and parallel, and tightly sealed into modules for long-term use. Solar cell modules (photovoltaic modules) are the core and most important component of a solar power generation system. Their function is to convert solar energy into electrical energy, which can be stored in batteries in off-grid systems, connected to loads, or connected to the grid.

[0003] The manufacturing process of photovoltaic modules involves several key steps, namely string welding, layout, stacking, lamination, glass bonding, EL appearance, edge sealing, lamination, edge trimming, flipping inspection, frame assembly, junction box assembly, potting, curing, cleaning, IV testing, insulation withstand voltage testing, EL testing, FQC appearance, grading, and packaging. Before string welding, the photovoltaic glass is loaded, and a film is cut and laid on the photovoltaic glass to prepare for the layout of the cell strings in the subsequent process.

[0004] However, due to insufficient friction between the encapsulant film and the photovoltaic glass, the start and stop of the production line, the smoothness of the encapsulant film itself, and the influence of external factors (such as wind), the encapsulant film may slip. After slipping, air bubbles will appear on the side lacking encapsulant film during subsequent lamination. The adhesive overflows from the side of the encapsulant film and sticks to the lamination fixture. After sticking to the lamination fixture, it cannot be removed during the frame removal process of the equipment, causing secondary damage to the module. At the same time, laying the battery string on the side lacking encapsulant film may also cause cell breakage, affecting the yield of photovoltaic modules.

[0005] To prevent the adhesive film from slipping, a temperature conduction device is currently used to fix it. This device heats the adhesive film with a soldering iron tip, melting it and causing it to adhere to the photovoltaic glass. However, after repeated use, the soldering iron tip tends to blacken, requiring regular cleaning by operators. If not cleaned properly, dirt can remain at the soldering point, and bulges can easily appear around the soldered area. When solar cells are laid in this area during later lamination, this can easily lead to cell breakage, affecting the quality of the photovoltaic module. Utility Model Content

[0006] Therefore, it is necessary to address the problems of adhesive film contamination and bulging caused by the current practice of using a soldering iron tip to heat the adhesive film to avoid slippage, which affects the quality of photovoltaic module products. This invention provides an adhesive film adsorption device and photovoltaic module production equipment that can reliably fix the first adhesive film to the photovoltaic glass, prevent the first adhesive film from slipping relative to the photovoltaic glass, and ensure the product quality of the photovoltaic module.

[0007] A film adsorption device is installed at the outlet of the film alignment machine in a photovoltaic module production equipment. The film alignment machine is capable of conveying photovoltaic glass with a first film applied. The film adsorption device includes:

[0008] High-voltage power supply; and

[0009] An electrostatic generator is positioned at the outlet of the film alignment machine and above the first film. The electrostatic generator is electrically connected to the high-voltage power supply. When the electrostatic generator is energized, it charges the first film, causing the first film to adhere to the photovoltaic glass under the influence of the charge.

[0010] In one embodiment of this application, the length of the electrostatic generator is greater than the length of the discharge port, and the electrostatic generator is located above the bottom wall of the discharge port;

[0011] And / or, the high-voltage power supply is located on the assembly line of the photovoltaic module production equipment, on the side of the assembly line, or on the mounting platform of the assembly line.

[0012] In one embodiment of this application, the length of the electrostatic generator bar is in the range of 2400mm ± 200mm;

[0013] And / or, the width of the electrostatic generator bar is in the range of 40mm ± 10mm;

[0014] And / or, the height of the electrostatic generator bar is in the range of 25mm ± 10mm.

[0015] In one embodiment of this application, the electrostatic generator includes an electrostatic substrate and a plurality of ion needles spaced apart on the electrostatic substrate, wherein the electrostatic substrate is disposed at the outlet of the adhesive film correction machine;

[0016] The end of the ion needle facing the first adhesive film is a tip, and the ion needle is electrically connected to the high-voltage power supply to form a strong electric field at the tip.

[0017] In one embodiment of this application, the electrostatic generator further includes a connecting block, which is disposed on the electrostatic substrate and connected to the adhesive film correction machine.

[0018] In one embodiment of this application, the distance between the ion needle and the first adhesive film ranges from 30mm to 100mm;

[0019] And / or, the distance between two adjacent ion needles is in the range of 5mm to 10mm;

[0020] And / or, the distance between the ion needle at the end and the corresponding end face of the electrostatic substrate is in the range of 100mm~200mm.

[0021] In one embodiment of this application, the input voltage of the high-voltage power supply is 220V-50 / 60Hz, the input power of the high-voltage power supply is 150W, the output voltage of the high-voltage power supply is ±30KV, and the output current of the high-voltage power supply is 5mA.

[0022] And / or, the adjustment parameter range of the operating voltage of the high-voltage power supply is 15.7KV±5KV, and the adjustment parameter range of the operating current of the high-voltage power supply is 0.05mA±0.03mA.

[0023] In one embodiment of this application, the operating voltage of the electrostatic generator is ≤ ±60KV, the operating current of the electrostatic generator is <2.5mA, the operating humidity range of the electrostatic generator is 0%RH~70%RH, and the operating temperature range of the electrostatic generator is 0℃~50℃.

[0024] A photovoltaic module manufacturing equipment includes an assembly line, a first encapsulant film laying device, an encapsulant film alignment machine, a second encapsulant film laying device, and an encapsulant film adsorption device as described in any of the above technical features.

[0025] The first adhesive film laying device, the adhesive film straightening machine, and the second adhesive film laying device are spaced apart on the production line, and the adhesive film adsorption device is located at the discharge port of the adhesive film straightening machine.

[0026] The first adhesive film laying device lays the first adhesive film on the photovoltaic glass and is transported to the second adhesive film laying device through the adhesive film alignment machine and the adhesive film adsorption device. The second adhesive film laying device lays the second adhesive film on top of the solar cells on the first adhesive film.

[0027] The adhesive film adsorption device can charge the first adhesive film, causing it to be adsorbed onto the photovoltaic glass.

[0028] In one embodiment of this application, the photovoltaic module production equipment further includes an electrostatic removal device, which is disposed on the production line and located at the outlet of the second film laying device. The electrostatic removal device is used to remove static electricity from the photovoltaic glass after the second film is laid.

[0029] By adopting the above technical solution, this application has at least the following technical effects:

[0030] The adhesive film adsorption device and photovoltaic module production equipment of this application include an electrostatic generator rod disposed at the discharge port of an adhesive film alignment machine, which can transport photovoltaic glass with a first adhesive film laid on it. When a high-voltage power supply is applied to the electrostatic generator rod, the surrounding air molecules are ionized. The ionized air generates a large number of ions, causing the first adhesive film to carry a certain charge. Under the influence of this charge, the first adhesive film can then be adsorbed onto the photovoltaic glass.

[0031] This adhesive film adsorption device has an electrostatic generator at the outlet of the adhesive film alignment machine. The electrostatic generator charges the first adhesive film, thereby reliably fixing the first adhesive film to the photovoltaic glass. This prevents the first adhesive film from slipping relative to the photovoltaic glass, eliminates the need to use a soldering iron tip to fix the first adhesive film, avoids dirt and bulging on the first adhesive film, ensures the product quality of the photovoltaic module, and improves the yield rate of the photovoltaic module. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the cooperation between the adhesive film adsorption device and the adhesive film correction machine according to an embodiment of this application.

[0033] Figure 2 for Figure 1 The side view shown shows the adhesive film adsorption device in conjunction with the adhesive film alignment machine.

[0034] Figure 3 for Figure 1 The enlarged view of a portion of point A showing the adhesive film adsorption device and adhesive film alignment machine working together.

[0035] Figure 4 for Figure 2 The enlarged view of the adhesive film adsorption device and adhesive film alignment machine at point B.

[0036] Figure 5 for Figure 2 The enlarged view of the adhesive film adsorption device and adhesive film alignment machine at point C.

[0037] Among them: 100, adhesive film adsorption device; 110, high voltage power supply; 120, electrostatic generator; 121, electrostatic substrate; 122, ion needle; 123, connecting block; 200, first adhesive film; 300, photovoltaic glass; 400, production line; 500, adhesive film correction machine; 510, discharge port. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Understandably, photovoltaic (PV) modules require two layers of encapsulating film to be laid on the PV glass during manufacturing. The first encapsulating film is laid on top of the PV glass, the solar cells are laid on top of the first film, and the second encapsulating film (i.e., two layers of encapsulating film) is laid on top of the solar cells. Typically, the first encapsulating film needs to be fixed to the PV glass, and the second encapsulating film can be fixed to the first film. The encapsulation of the PV module is achieved through the first and second encapsulating films, ensuring the product quality of the PV module.

[0045] However, due to insufficient friction between the first encapsulant film and the photovoltaic glass, the start and stop of the production line, the smoothness of the first encapsulant film itself, and the influence of external factors (such as wind), the first encapsulant film may slip. After slipping, air bubbles will appear on the side lacking the first encapsulant film during subsequent lamination. The adhesive overflows from the side of the first encapsulant film and sticks to the lamination fixture. After sticking to the lamination fixture, it cannot be removed during the frame removal process of the equipment, causing secondary damage to the photovoltaic module. At the same time, laying the battery string on the side lacking the first encapsulant film may also cause breakage, affecting the yield of photovoltaic modules.

[0046] To prevent the adhesive film from slipping, a temperature conduction device is currently used to fix it. This device heats the adhesive film with a soldering iron tip, melting it and causing it to adhere to the photovoltaic glass. However, after repeated use, the soldering iron tip tends to blacken, requiring regular cleaning by operators. If not cleaned properly, dirt can remain at the soldering point, and bulges can easily appear around the soldered area. When solar cells are laid in this area during later lamination, this can easily lead to cell breakage, affecting the quality of the photovoltaic module.

[0047] For this purpose, please refer to Figure 1 and Figure 2 This application provides a film adsorption device 100, which is applied in photovoltaic module production equipment to fix a first film 200 (i.e., a film) onto photovoltaic glass 300 and prevent the first film 200 from slipping relative to the photovoltaic glass 300. Figure 1 This is a schematic diagram illustrating the cooperation between the adhesive film adsorption device 100 and the adhesive film alignment machine 500 according to an embodiment of this application. Figure 2 for Figure 1 The side view of the adhesive film adsorption device 100 in conjunction with the adhesive film alignment machine 500 is shown.

[0048] To better describe the structure of the encapsulant film adsorption device 100, the structure of the photovoltaic module production equipment is briefly introduced here. The photovoltaic module production equipment includes at least a production line 400, a first encapsulant film laying device, an encapsulant film alignment machine 500, a second encapsulant film laying device, and the encapsulant film adsorption device 100 of this application. The first encapsulant film laying device, the encapsulant film alignment machine 500, and the second encapsulant film laying device are respectively arranged on the production line 400 along the movement direction of the production line 400.

[0049] The production line 400 serves as a track for conveying the photovoltaic glass 300. Optionally, the production line 400 can be a conveyor roller conveyor, belt conveyor, or other structure capable of conveying the photovoltaic glass 300 during the production process. A first encapsulant film laying device lays a first encapsulant film 200 onto the photovoltaic glass 300 on the production line 400. An encapsulant film straightening machine 500 straightens the first encapsulant film 200 onto the photovoltaic glass 300 to ensure that the first encapsulant film 200 uniformly covers the photovoltaic glass 300. A second encapsulant film laying device lays a second encapsulant film above the solar cells on the first encapsulant film 200.

[0050] The production line 400 conveys the photovoltaic glass 300 to the first encapsulant film laying device, which lays the first encapsulant film 200 on top of the photovoltaic glass 300. Subsequently, the production line 400 conveys the photovoltaic glass 300 with the first encapsulant film 200 laid on it to the encapsulant film alignment machine 500. The encapsulant film alignment machine 500 can adjust the position of the first encapsulant film 200 relative to the photovoltaic glass 300, so that the first encapsulant film 200 accurately covers the edge of the photovoltaic glass 300 and prevents the first encapsulant film 200 from shifting relative to the photovoltaic glass 300.

[0051] After the adhesive film alignment machine 500 corrects the position of the first adhesive film 200 relative to the photovoltaic glass 300, the production line 400 transports the corrected first adhesive film 200 and photovoltaic glass 300. Solar cells are then laid on top of the first adhesive film 200 and welded into a string using a stringer. Subsequently, the production line 400 transports the first adhesive film 200 with the solar cells and the photovoltaic glass 300 to the second adhesive film laying device. The second adhesive film laying device lays the second adhesive film on top of the solar cells, followed by lamination and other operations to fabricate a photovoltaic module.

[0052] In this application, the photovoltaic glass 300 is low-iron ultra-white rolled tempered glass. This photovoltaic glass 300 serves as the supporting substrate for the photovoltaic module, possessing light transmission, waterproofing, and certain mechanical properties. During the design process of the photovoltaic glass 300, in addition to considering mechanical strength and high light transmittance (increasing the absorption efficiency of sunlight by the solar cells), the adhesion (i.e., peel strength) between the photovoltaic glass 300 itself and the first encapsulating film 200, such as EVA (ethylene-vinyl acetate copolymer), POE (polyolefin elastomer), or EPE (expandable polyethylene), must also be considered to prevent delamination, peeling, and other failures of the photovoltaic module during long-term outdoor use.

[0053] The first encapsulant film 200 and the second encapsulant film are the encapsulating films, including but not limited to EVA (ethylene-vinyl acetate copolymer), POE (polyolefin elastomer), and EPE (expandable polyethylene). When the heating temperature of the laminator reaches the decomposition temperature of the crosslinking agent, the peroxide bonds in the crosslinking agent break to form peroxide free radicals RO﹣, which readily combine with the H groups of the alkyl groups on the side chains of the first encapsulant film 200 and the second encapsulant film. After the two alkyl active groups combine, the first encapsulant film 200 and the second encapsulant film are crosslinked together. The first encapsulant film 200 and the second encapsulant film crosslink the photovoltaic glass 300, the solar cells, and the backsheet glass together. After processing the laminated photovoltaic glass 300, solar cells, and backsheet glass, a photovoltaic module is formed.

[0054] Understandably, after the adhesive film alignment machine 500 corrects the position of the first adhesive film 200 relative to the photovoltaic glass 300, the first adhesive film 200 can accurately cover the edge of the photovoltaic glass 300. In order to avoid the slippage of the first adhesive film 200 relative to the photovoltaic glass 300 and to ensure the product quality of the photovoltaic module, the first adhesive film 200 needs to be fixed to the photovoltaic glass 300 to avoid the cell breaking due to direct contact between the cell and the photovoltaic glass 300.

[0055] Therefore, this application provides an adhesive film adsorption device 100 at the outlet 510 of the adhesive film alignment machine 500. When the adhesive film alignment machine 500 outputs the first adhesive film 200 after alignment and the photovoltaic glass 300 from the outlet 510, the adhesive film adsorption device 100 at the outlet 510 can charge the first adhesive film 200, causing it to be adsorbed onto the photovoltaic glass 300 under the action of the charge. This fixes the first adhesive film 200 onto the photovoltaic glass 300, preventing it from slipping relative to the photovoltaic glass 300 and facilitating the subsequent laying of the solar cells and the second adhesive film.

[0056] The adhesive film adsorption device 100 of this application charges the first adhesive film 200 at the discharge port 510 of the adhesive film correction machine 500, so that the first adhesive film 200 is reliably fixed to the photovoltaic glass 300, avoiding slippage of the first adhesive film 200 relative to the photovoltaic glass 300. It eliminates the need to use a soldering iron tip to fix the first adhesive film 200, avoids dirt on the first adhesive film 200, and also avoids bulging on the first adhesive film 200, thus ensuring the product quality of the photovoltaic module and improving the yield rate of the photovoltaic module.

[0057] The following describes the specific structure of a film adsorption device 100 according to an embodiment.

[0058] See Figures 1 to 3 In one embodiment, the adhesive film adsorption device 100 includes a high-voltage power supply 110 and an electrostatic generator 120. The electrostatic generator 120 is disposed at the outlet of the adhesive film alignment machine 500 and located above the first adhesive film 200. The electrostatic generator 120 is electrically connected to the high-voltage power supply 110. After the electrostatic generator 120 is energized, the first adhesive film 200 is charged, so that the first adhesive film 200 is adsorbed onto the photovoltaic glass 300 under the action of the charge. Figure 3 for Figure 1 The enlarged view of a portion of point A showing the adhesive film adsorption device 100 and the adhesive film correction machine 500 working together.

[0059] The high-voltage power supply 110 powers the adhesive film adsorption device 100 and is directly connected to an external power source. The high-voltage power supply 110 converts input AC or DC power into high voltage (typically thousands to tens of thousands of volts) to meet the specific application requirements.

[0060] In this embodiment, the high-voltage power supply 110 is disposed on the mounting platform of the assembly line 400, such as on the ground to the side of the assembly line 400. Of course, in other embodiments of this application, the high-voltage power supply 110 may optionally be disposed above the assembly line 400 or on the side of the assembly line 400, as long as it does not affect the conveying of the first encapsulant 200 for laying the photovoltaic glass 300.

[0061] An electrostatic generator 120 is disposed in the adhesive film alignment machine 500 and located at the discharge port 510. The electrostatic generator 120 is a component that can ionize the air to charge the first adhesive film 200. The electrostatic generator 120 is electrically connected to a high-voltage power supply 110, which can supply power to the electrostatic generator 120 so that the first adhesive film 200 becomes charged under the action of the electrostatic generator 120 and is adsorbed onto the photovoltaic glass 300.

[0062] Specifically, after the high-voltage power supply 110 supplies power to the electrostatic generator 120, the electrostatic generator 120 will form a strong electric field. This strong electric field will ionize the surrounding air molecules, and the ionized air will produce a large number of ions. For the first adhesive film 200, which is an insulator, although the charge cannot move freely as in a conductor, under the action of the strong electric field of the electrostatic generator 120, the molecules or atoms on the surface of the first adhesive film 200 may become polarized, so that the first adhesive film 200 carries a certain charge.

[0063] In this way, the first adhesive film 200 can generate a certain adsorption force under the action of charge, so that the first adhesive film 200 is adsorbed onto the photovoltaic glass 300, thereby fixing the first adhesive film 200 to the photovoltaic glass 300, preventing the first adhesive film 200 from slipping relative to the photovoltaic glass 300, preventing the first adhesive film 200 from sticking to the tooling during the later lamination process, and at the same time, preventing damage to the solar cells and improving the yield of photovoltaic modules.

[0064] Meanwhile, the first adhesive film 200 is attracted to the photovoltaic glass 300 by the electrostatic generator 120 under the action of charge, thus fixing the first adhesive film 200 relative to the photovoltaic glass 300. This eliminates the need to use a soldering iron tip to heat the first adhesive film 200, avoiding the blackening of the first adhesive film 200 in the heating area and the bulging of the curve around the heating area. It also avoids the fragmentation of the solar cell during the lamination process, ensuring the product quality of the photovoltaic module.

[0065] In the above embodiment, the adhesive film adsorption device 100 includes an electrostatic generator 120 at the outlet of the adhesive film alignment machine 500. When energized, the electrostatic generator 120 ionizes the surrounding air molecules, generating a large number of ions. This causes the first adhesive film 200 to carry a certain charge, allowing it to adhere to the photovoltaic glass 300 under the influence of the charge. Thus, by placing the electrostatic generator 120 at the outlet 510 of the adhesive film alignment machine 500, the first adhesive film 200 becomes charged, reliably fixing it to the photovoltaic glass 300. This prevents slippage of the first adhesive film 200 relative to the photovoltaic glass 300, eliminates the need for soldering, avoids dirt accumulation on the first adhesive film 200, and prevents bulging, ensuring the quality of the photovoltaic modules and improving their yield.

[0066] See Figures 1 to 5 In one embodiment, the electrostatic generator 120 includes an electrostatic substrate 121 and a plurality of ion needles 122 spaced apart from the electrostatic substrate 121. The electrostatic substrate 121 is located at the outlet 510 of the adhesive film correction machine 500. The end of the ion needle 122 facing the first adhesive film 200 is a tip, and the ion needle 122 is electrically connected to a high-voltage power supply 110 to form a strong electric field at the tip. Figure 4 for Figure 2 The enlarged view at point B shows the adhesive film adsorption device 100 and the adhesive film alignment machine 500 working together. Figure 5 for Figure 2 The enlarged view of the adhesive film adsorption device 100 and the adhesive film correction machine 500 at point C.

[0067] The electrostatic substrate 121 serves as the mounting base for the electrostatic generator 120. It is disposed on the outer casing of the adhesive film alignment machine 500 and located at the discharge port 510 of the machine. In this embodiment, the electrostatic substrate 121 is made of insulating material. The insulating material supports the conductive ion needles 122, ensuring an insulated connection between the electrostatic generator 120 and the adhesive film alignment machine 500, thus isolating the high-voltage components.

[0068] Thus, the electrostatic substrate 121, made of insulating material, prevents the electrostatic generator 120 from transmitting high-voltage electricity to the film alignment machine 500, ensuring safety during use. Optionally, the electrostatic substrate 121 is made of high-temperature resistant and aging-resistant engineering plastics such as POM (polyoxymethylene), nylon, polycarbonate, etc.

[0069] The length direction of the electrostatic substrate 121 is Figure 1 As shown in the left-right direction, the corresponding width direction of the electrostatic substrate 121 is... Figure 1The front-to-back direction shown is the direction in which the production line 400 extends, and the height direction of the electrostatic substrate 121 is... Figure 1 The vertical and horizontal directions and the top and bottom directions are shown.

[0070] The length, width, and height directions of the electrostatic substrate 121 are as follows: Figure 1 The direction shown is the reference, and in the following description of the film adsorption device 100 and its application, it will be referred to as such. Figure 1 The length, width, and height directions shown are used as references.

[0071] Furthermore, the electrostatic substrate 121 can support multiple ion needles 122. The ion needles 122 are arranged in the electrostatic substrate 121 along the height direction, and the multiple ion needles 122 are spaced apart along the length direction of the electrostatic substrate 121. The ion needles 122 can be electrically connected to the high voltage power supply 110. The tip of the bottom of the ion needle 122 can be exposed on the lower surface of the electrostatic substrate 121 and extend towards the first adhesive film 200.

[0072] After the high-voltage power supply 110 supplies power to the electrostatic generator 120, the electrostatic generator 120 will form a strong electric field at the tip of the ion needle 122. Because the electric field strength at the tip of the ion needle 122 is very high, it will ionize the surrounding air molecules. The ionized air will generate a large number of ions. In this way, the molecules or atoms on the surface of the first adhesive film 200 will become polarized, so that the first adhesive film 200 carries a certain charge, thereby adsorbing the first adhesive film 200 onto the photovoltaic glass 300 and preventing the first adhesive film 200 from slipping relative to the photovoltaic glass 300.

[0073] See Figure 1 and Figure 2 In one embodiment, the length of the electrostatic generator 120 is greater than the length of the discharge port 510, and the electrostatic generator 120 is located above the bottom wall of the discharge port 510. Thus, after the electrostatic generator 120 is installed in the adhesive film alignment machine 500, the electrostatic generator 120 can cover the discharge port 510 along its length, facilitating the electrostatic generator 120 to cause the first adhesive film 200 to be adsorbed onto the photovoltaic glass 300 under the action of charge.

[0074] Meanwhile, the electrostatic generator 120 is located above the bottom wall of the discharge port 510. After the adhesive film alignment machine 500 outputs the aligned first adhesive film 200 and photovoltaic glass 300, the electrostatic generator 120 is positioned above the first adhesive film 200, thereby positioning the ion needle 122 above the first adhesive film 200. When the electrostatic generator 120 ionizes the surrounding air, it polarizes the molecules or atoms in the first adhesive film 200 below it, thus giving the first adhesive film 200 a certain charge. Under the influence of this charge, the first adhesive film 200 can be adsorbed onto the photovoltaic glass 300.

[0075] See Figure 1 and Figure 2 In one embodiment, the electrostatic generator 120 further includes a connecting block 123, which is disposed on the electrostatic substrate 121 and connected to the adhesive film alignment machine 500, so that the electrostatic substrate 121 is mounted on the adhesive film alignment machine 500. That is, the electrostatic generator 120 is fixed to the adhesive film alignment machine 500 by the connecting block 123 to ensure that the electrostatic generator 120 is reliably fixed to the adhesive film alignment machine 500.

[0076] In this embodiment, the connecting block 123 is L-shaped to facilitate the connection between the electrostatic substrate 121 and the adhesive film alignment machine 500. Of course, in other embodiments of this application, the connecting block 123 may also be a connecting plate, etc. Optionally, there may be multiple connecting blocks 123, which are spaced apart along the length of the electrostatic substrate 121 to ensure the reliability of the connection between the electrostatic substrate 121 and the adhesive film alignment machine 500.

[0077] See Figure 1 and Figure 2 In one embodiment, the height of the electrostatic generator 120 is less than the height of the discharge port 510. That is, after the electrostatic generator 120 is positioned at the discharge port 510 of the adhesive film alignment machine 500, there is a certain distance between the top of the electrostatic generator 120 and the top wall of the discharge port 510, and a certain distance between the bottom of the electrostatic generator 120 and the bottom wall of the discharge port 510. When the adhesive film alignment machine 500 outputs first adhesive films 200 and photovoltaic glass 300 of different thicknesses, the position of the electrostatic generator 120 can be adjusted so that the first adhesive films 200 of different thicknesses are adsorbed onto the corresponding photovoltaic glass 300.

[0078] See Figure 2 In one embodiment, the length L of the electrostatic generator 120 ranges from 2400 mm ± 200 mm. For example... Figure 2 As shown, when the dimension L of the electrostatic generator 120 along the length direction is within the above range, the electrostatic generator 120 can cover the discharge port 510 in the length direction, avoiding the electrostatic generator 120 being too short so that the first adhesive film 200 cannot be completely adsorbed onto the photovoltaic glass 300, and ensuring that the first adhesive film 200 is reliably adsorbed onto the photovoltaic glass 300.

[0079] See Figure 1 and Figure 2 In one embodiment, the width of the electrostatic generating rod 120 ranges from 40 mm ± 10 mm. Figure 1 and Figure 2The width of the electrostatic generator 120 is not shown. The width of the electrostatic generator 120 is within the aforementioned range, ensuring that the electrostatic substrate 121 has a certain dimension in the width direction, facilitating reliable fixation of the electrostatic generator 120 to the adhesive film alignment machine 500, and stably supporting the ion needle 122.

[0080] See Figure 1 and Figure 2 In one embodiment, the height of the electrostatic generator 120 ranges from 25 mm ± 10 mm. Figure 1 and Figure 2 The height of the electrostatic generator 120 is not shown. When the height of the electrostatic generator 120 is within the above-mentioned range, the electrostatic substrate 121 can have a certain dimension in the height direction, which can stably support the ion needle 122 while ensuring that the tip of the ion needle 122 can be exposed through the electrostatic generator 120.

[0081] See Figure 2 and Figure 4 In one embodiment, the distance H between the ion needle 122 and the first adhesive film 200 ranges from 30mm to 100mm. The distance H between the ion needle 122 and the first adhesive film 200 refers to the distance between the bottom of the tip of the ion needle 122 and the first adhesive film 200. Figure 4 As shown. When the distance H between the ion needle 122 and the first adhesive film 200 is within the above range, the tip of the ion needle 122 generates a strong electric field that enables the first adhesive film 200 to carry a certain charge, so that the first adhesive film 200 can be reliably adsorbed onto the photovoltaic glass 300.

[0082] If the distance between the ion needle 122 and the first adhesive film 200 is too far, the strong electric field at the tip of the ion needle 122 will weaken the charge on the first adhesive film 200, causing the first adhesive film 200 to fail to reliably adsorb onto the photovoltaic grid. If the distance is too close, the tip of the ion needle 122 may scratch the first adhesive film 200, affecting the performance of the first adhesive film 200.

[0083] See Figure 2 and Figure 4 In one embodiment, the distance D between the end ion needle 122 and the corresponding end face of the electrostatic substrate 121 ranges from 100mm to 200mm. The distance D between the end ion needle 122 and the corresponding end face of the electrostatic substrate 121 refers to the distance between the leftmost ion needle 122 of the electrostatic generating rod 120 and the left end face of the electrostatic substrate 121, and the distance between the rightmost ion needle 122 of the electrostatic generating rod 120 and the right end face of the electrostatic substrate 121.

[0084] Here, the distance D between the leftmost ion needle 122 of the electrostatic generator 120 and the left end face of the electrostatic substrate 121 is used to illustrate the distance D between the corresponding end face of the ion needle 122 and the electrostatic substrate 121. Figure 4 As shown. When the distance D between the leftmost ion needle 122 of the electrostatic generator 120 and the left end face of the electrostatic substrate 121 is within the above-mentioned range, it can ensure the adsorption effect of the first adhesive film 200 on the photovoltaic module at the edge and prevent the first adhesive film 200 from slipping.

[0085] See Figure 2 and Figure 5 In one embodiment, the distance S between two adjacent ion needles 122 ranges from 5mm to 10mm. The distance S between two adjacent ion needles 122 refers to the distance between the central axes of two adjacent ion needles 122, such as... Figure 5 As shown. When the distance S between two adjacent ion needles 122 is within the above range, the electric field strength at the tip of the ion needle 122 can be guaranteed so that the surrounding air is ionized under the action of a strong electric field.

[0086] If the distance between two adjacent ion needles 122 is too large, the electric field strength at the tip of the ion needle 122 will be weakened, causing the first adhesive film 200 to fail to reliably adsorb onto the photovoltaic array. If the distance is too small, it will increase the cost of the electrostatic generator 120. Taking into account the cost of the electrostatic generator 120 and the adsorption effect of the first adhesive film 200, this application sets the distance between two adjacent ion needles 122 within the above-mentioned range.

[0087] See Figure 1 and Figure 2 In one embodiment, the input voltage of the high-voltage power supply 110 is 220V-50 / 60Hz, the input power of the high-voltage power supply 110 is 150W, the output voltage of the high-voltage power supply 110 is ±30KV, and the output current of the high-voltage power supply 110 is 5mA. After the high-voltage power supply 110 is connected to an external power source, its relevant input parameters are within the above-mentioned ranges. The high-voltage power supply 110 can convert the input AC or DC power into a high voltage to meet the corresponding application requirements.

[0088] See Figure 1 and Figure 2 In one embodiment, the operating voltage of the high-voltage power supply 110 is adjusted within the range of 15.7KV±5KV, and the operating current is adjusted within the range of 0.05mA±0.03mA. The first adhesive film 200 is an insulator. When the adjustment parameters of the high-voltage power supply 110 are within the above range, the first adhesive film 200 acquires a certain charge through the principle of inductive charging and is adsorbed onto the photovoltaic glass 300, achieving the adsorption effect.

[0089] See Figure 1 and Figure 2 In one embodiment, the operating voltage of the electrostatic generator 120 is ≤ ±60KV, the operating current of the electrostatic generator 120 is <2.5mA, the operating humidity range of the electrostatic generator 120 is 0%RH~70%RH, and the operating temperature range of the electrostatic generator 120 is 0℃~50℃. When the operating parameters of the electrostatic generator 120 are within the above ranges, a strong electric field can be generated at the tip of the ion rod.

[0090] The electrostatic generator 120 primarily charges objects through corona discharge. When the ion needle 122 in the electrostatic generator 120 is connected to the high-voltage power supply 110, a strong electric field is generated at the tip of the ion needle 122. Due to the extremely high electric field strength at the tip of the ion needle 122, the surrounding air molecules are ionized. The ionized air generates a large number of ions, which polarize the molecules or atoms on the surface of the first adhesive film 200, giving the first adhesive film 200 a certain charge. Thus, under the influence of the charge, the first adhesive film 200 can generate a certain adsorption force, adsorbing it onto the photovoltaic glass 300, thereby fixing the first adhesive film 200 to the photovoltaic glass 300 and preventing it from slipping relative to the photovoltaic glass 300.

[0091] The adhesive film adsorption device 100 of this application includes an electrostatic generator 120 at the outlet of the adhesive film alignment machine 500. When energized, the electrostatic generator 120 ionizes the surrounding air molecules, generating a large number of ions. This causes the first adhesive film 200 to carry a certain charge, allowing it to adhere to the photovoltaic glass 300 under the influence of the charge. Thus, by placing the electrostatic generator 120 at the outlet 510 of the adhesive film alignment machine 500, the first adhesive film 200 becomes charged, reliably fixing it to the photovoltaic glass 300. This prevents slippage of the first adhesive film relative to the photovoltaic glass 300, eliminates the need for soldering, avoids dirt accumulation on the first adhesive film 200, and prevents bulging, ensuring the quality of the photovoltaic modules and improving their yield.

[0092] See Figure 1 and Figure 2 This application also provides a photovoltaic module manufacturing equipment, which includes a production line 400, a first film laying device, a film alignment machine 500, a second film laying device, and a film adsorption device 100 as described in any of the above embodiments. The first film laying device, the film alignment machine 500, and the second film laying device are arranged at intervals on the production line 400, and the film adsorption device 100 is disposed at the discharge port 510 of the film alignment machine 500.

[0093] The first film laying device lays the first film 200 on the photovoltaic glass 300, and then, via the film alignment machine 500 and the film adsorption device 100, it is conveyed to the second film laying device. The second film laying device lays the second film on top of the solar cells on the first film 200. The film adsorption device 100 enables the first film 200 to carry a charge, causing the first film 200 to adhere to the photovoltaic glass 300.

[0094] After the photovoltaic module production equipment of this application adopts the above-mentioned adhesive film adsorption device 100, the first adhesive film 200 can be reliably adsorbed onto the photovoltaic glass 300, avoiding slippage of the first adhesive film 200 relative to the photovoltaic glass 300, which facilitates subsequent operations such as lamination in the photovoltaic module production equipment, improves the yield rate of photovoltaic modules, and ensures the product quality of photovoltaic modules.

[0095] In one embodiment, the photovoltaic module production equipment further includes an electrostatic removal device, which is disposed on the production line 400 and located at the outlet of the second encapsulant film laying device. The electrostatic removal device is used to remove static electricity from the photovoltaic glass 300 after the second encapsulant film is laid.

[0096] In other words, an electrostatic discharge device needs to be installed at the exit of the second layer of encapsulant film. This device releases static electricity within the photovoltaic module, eliminating electrostatic marks that may be caused by ion accumulation and ensuring the performance of the photovoltaic module. It is worth noting that the electrostatic discharge device can utilize existing structures, which will not be elaborated upon here.

[0097] The process of preparing a photovoltaic module using the adhesive film adsorption device 100 of this application is as follows: after the first adhesive film 200 is laid on the photovoltaic glass 300, the production line 400 transports the photovoltaic glass 300 with the first adhesive film 200 laid on it to the adhesive film alignment machine 500, and the adhesive film alignment machine 500 corrects the position of the first adhesive film 200 relative to the photovoltaic glass 300.

[0098] When the adhesive film alignment machine 500 outputs the first adhesive film 200 after alignment and the photovoltaic glass 300, the electrostatic generator 120 at the discharge port 510 of the adhesive film alignment machine 500 is energized, which enables the first adhesive film 200 to carry a certain charge, thereby causing the first adhesive film 200 to be adsorbed onto the photovoltaic glass 300, thus fixing the first adhesive film 200 to the photovoltaic glass 300 and preventing the first adhesive film 200 from slipping relative to the photovoltaic glass 300.

[0099] Subsequently, the solar cells are laid on the first encapsulating film 200, and the solar cells are arranged and stacked. Then, the production line 400 transports the first encapsulating film 200 and photovoltaic glass 300 to the second encapsulating film laying device. The second encapsulating film laying device lays the second encapsulating film on top of the solar cells. After the second encapsulating film is laid, the static electricity in the module is released by the static removal device, and then lamination and other operations are performed to prepare the photovoltaic module.

[0100] In the photovoltaic module production process, a comparison was made between installing the adhesive film adsorption device 100 of this application at the discharge port 510 of the adhesive film alignment machine 500 and not installing the adhesive film adsorption device 100 of this application. A comparison was also made between installing an electrostatic removal device at the discharge port 510 of the second adhesive film laying device and not installing an electrostatic removal device. The results are shown in the table below.

[0101] As can be seen from the table above, after installing the adhesive film adsorption device 100 at the outlet 510 of the adhesive film alignment machine 500, the performance of the photovoltaic module is better than that when the adhesive film adsorption device 100 is not installed at the outlet 510 of the adhesive film alignment machine 500. After installing the electrostatic removal device at the outlet of the second adhesive film laying device, the performance of the photovoltaic module is better than that when the electrostatic removal device is not installed at the outlet of the second adhesive film laying device.

[0102] 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.

[0103] 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 film adsorption device, characterized in that, The adhesive film alignment machine (500) is installed at the outlet (510) of the photovoltaic module production equipment. The adhesive film alignment machine (500) is capable of conveying photovoltaic glass (300) with a first adhesive film (200) laid on it. The adhesive film adsorption device (100) includes: High voltage power supply (110); and An electrostatic generator (120) is disposed at the outlet of the adhesive film correction machine (500) and located above the first adhesive film (200). The electrostatic generator (120) is electrically connected to the high-voltage power supply (110). When the electrostatic generator (120) is energized, the first adhesive film (200) is charged, so that the first adhesive film (200) is adsorbed onto the photovoltaic glass (300) under the action of the charge.

2. The adhesive film adsorption device according to claim 1, characterized in that, The length of the electrostatic generator (120) is greater than the length of the discharge port (510), and the electrostatic generator (120) is located above the bottom wall of the discharge port (510). And / or, the high-voltage power supply (110) is disposed on the production line (400) of the photovoltaic module production equipment, on the side of the production line (400), or on the mounting surface of the production line (400).

3. The adhesive film adsorption device according to claim 1, characterized in that, The length of the electrostatic generator (120) is in the range of 2400mm ± 200mm; And / or, the width of the electrostatic generator (120) is in the range of 40mm ± 10mm; And / or, the height of the electrostatic generator (120) is in the range of 25mm ± 10mm.

4. The adhesive film adsorption device according to claim 1, characterized in that, The electrostatic generator (120) includes an electrostatic substrate (121) and a plurality of ion needles (122) spaced apart on the electrostatic substrate (121). The electrostatic substrate (121) is located at the outlet (510) of the adhesive film correction machine (500). The end of the ion needle (122) facing the first adhesive film (200) is a tip, and the ion needle (122) is electrically connected to the high voltage power supply (110) to form a strong electric field at the tip.

5. The adhesive film adsorption device according to claim 4, characterized in that, The electrostatic generator (120) also includes a connecting block (123), which is disposed on the electrostatic substrate (121) and connected to the adhesive film correction machine (500).

6. The adhesive film adsorption device according to claim 4, characterized in that, The distance between the ion needle (122) and the first adhesive film (200) is in the range of 30mm to 100mm; And / or, the distance between two adjacent ion needles (122) is in the range of 5 mm to 10 mm; And / or, the distance between the end of the ion needle (122) and the corresponding end face of the electrostatic substrate (121) is in the range of 100mm~200mm.

7. The adhesive film adsorption device according to any one of claims 1 to 6, characterized in that, The input voltage of the high voltage power supply (110) is 220V-50 / 60Hz, the input power of the high voltage power supply (110) is 150W, the output voltage of the high voltage power supply (110) is ±30KV, and the output current of the high voltage power supply (110) is 5mA. And / or, the working voltage of the high voltage power supply (110) is within the range of 15.7KV±5KV, and the working current of the high voltage power supply (110) is within the range of 0.05mA±0.03mA.

8. The film adsorption device according to any one of claims 1 to 6, characterized in that, The electrostatic generator (120) has a working voltage of ≤ ±60KV, a working current of <2.5mA, a working humidity range of 0%RH~70%RH, and a working temperature range of 0℃~50℃.

9. A photovoltaic module manufacturing equipment, characterized in that, It includes a production line (400), a first adhesive film laying device, an adhesive film alignment machine (500), a second adhesive film laying device, and an adhesive film adsorption device (100) as described in any one of claims 1 to 8. The first adhesive film laying device, the adhesive film correction machine (500) and the second adhesive film laying device are arranged at intervals on the production line (400), and the adhesive film adsorption device (100) is arranged at the discharge port (510) of the adhesive film correction machine (500); The first adhesive film laying device lays the first adhesive film (200) on the photovoltaic glass (300), and conveys it to the second adhesive film laying device through the adhesive film correction machine (500) and the adhesive film adsorption device (100). The second adhesive film laying device lays the second adhesive film on the first adhesive film (200) above the battery cells. The adhesive film adsorption device (100) can charge the first adhesive film (200) so that the first adhesive film (200) is adsorbed onto the photovoltaic glass (300).

10. The photovoltaic module production equipment according to claim 9, characterized in that, The photovoltaic module production equipment also includes an electrostatic removal device, which is installed on the production line (400) and located at the outlet of the second film laying device. The electrostatic removal device is used to remove static electricity from the photovoltaic glass (300) after the second film is laid.

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