Edge sealing structure and photovoltaic module production equipment

Abstract

The application relates to an edge sealing structure and a photovoltaic module production device. The edge sealing structure comprises two pressing wheel assemblies arranged symmetrically along the height direction, used for clamping the edges of a laminated assembly, and the pressing wheel assemblies can seal the edges of the laminated assembly when moving; and a distance detection member arranged on at least one pressing wheel assembly, which is used for detecting the pressing distance between the pressing wheel assembly and the edges of the laminated assembly when the pressing wheel assembly clamps the laminated assembly, so that a preset interval exists between the pressing wheel assembly and the edges of the battery piece in the laminated assembly. In this way, when the two pressing wheel assemblies clamp the laminated assembly to perform the edge sealing operation, the distance detection member can detect the distance between the position where the distance detection member is located and the edges of the laminated assembly, thereby detecting the pressing distance of the pressing wheel assembly, so that a certain distance exists between the pressing wheel assembly and the edges of the battery piece in the laminated assembly, the battery piece is prevented from being cracked due to excessive clamping force of the pressing wheel assembly, the yield of the photovoltaic module is improved, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module manufacturing technology, and in particular to an edge sealing structure and photovoltaic module manufacturing equipment. Background Technology

[0002] During the manufacturing process of photovoltaic modules, the four edges of the double-glass module need to be sealed. The sealing process involves installing PET (polyethylene terephthalate) perforated tape on the four sides of the double-glass module to prevent the adhesive film from overflowing onto the front and back of the module during the lamination process, which would increase the difficulty of cleaning.

[0003] Currently, during the edge sealing process of double-glazed modules, the clamping rollers of the edge sealing machine clamp the upper and lower glass layers. During this process, when the rollers press against or approach the solar cells, excessive clamping force can cause the solar cells to crack, affecting the product quality of the photovoltaic modules. Utility Model Content

[0004] Therefore, it is necessary to address the problem of cell cracking caused by excessive clamping force of the pressing rollers during edge sealing of current double-glazed modules. This requires providing an edge sealing structure and photovoltaic module production equipment that can detect the pressing distance of the edge sealing structure onto the edge of the laminated module, preventing excessive clamping force from causing cell cracking, thereby improving the yield rate of photovoltaic modules and reducing production costs.

[0005] An edge sealing structure for sealing the edges of a laminated assembly, the edge sealing structure comprising:

[0006] Two pressure roller assemblies, symmetrically arranged along the height direction, are used to clamp the edges of the stacked assembly, and the pressure roller assemblies can seal the edges of the stacked assembly when they move; and

[0007] A distance detection element is disposed on at least one of the pressure roller assemblies. The distance detection element is used to detect the pressing distance between the pressure roller assembly and the edge of the stacked assembly when the pressure roller assembly clamps the stacked assembly, so that there is a preset distance between the pressure roller assembly and the edge of the battery cell in the stacked assembly.

[0008] In one embodiment of this application, the distance detection element can detect whether the pressing distance of the pressure roller assembly pressing on the edge of the stacked assembly exceeds the safe distance, the safe distance being 5mm~8mm;

[0009] And / or, after the pressure roller assembly comes into contact with the surface of the stacked assembly, the distance detection element faces the stacked assembly.

[0010] In one embodiment of this application, the pressure roller assembly includes opposing support frames and a pressing roller, the support frames being able to support and mount the pressing roller, and the two axial ends of the pressing roller being rotatably connected to the support frames;

[0011] The distance detection element is disposed on the pressure roller, which is capable of pressing against the stacked assembly.

[0012] In one embodiment of this application, the pressure roller has a radially penetrating mounting hole, and the distance detection element is disposed in the mounting hole, wherein the surface of the distance detection element is coplanar with the outer peripheral surface of the pressure roller, or the surface of the distance detection element is recessed into the outer peripheral surface of the pressure roller;

[0013] And / or, the clamping wheel has a first end and a second end opposite each other along the axial direction, the first end of the clamping wheel is aligned with the edge of the stacked assembly, and the distance detection element is disposed near the second end of the clamping wheel.

[0014] In one embodiment of this application, the edge sealing structure further includes two support components, which are symmetrically arranged, and a pressure roller assembly is installed at one end of each support component.

[0015] In one embodiment of this application, the support assembly includes a support column and a support plate, the support plate is disposed at one end of the support column, the support column is connected to the edge sealing host of the edge sealing structure, and the support frame is disposed on the support plate;

[0016] And / or, the edge sealing structure further includes an edge sealing host, with two support components symmetrically arranged on the edge sealing host. The edge sealing host drives the support components to move the pressure roller assembly, so that the two pressure roller assemblies clamp or release the stacked assembly, and drive the pressure roller assembly to seal the edge of the stacked assembly.

[0017] In one embodiment of this application, the distance detection element is a laser sensor or an ultrasonic sensor.

[0018] In one embodiment of this application, the sealing structure further includes an alarm component, which is electrically connected to the distance detection element. The alarm component can issue an alarm when the pressing distance detected by the distance detection element exceeds the safe distance.

[0019] In one embodiment of this application, the alarm component is a display screen, which is capable of displaying alarm prompts;

[0020] Alternatively, the alarm component may be a buzzer;

[0021] Alternatively, the alarm component may be an indicator light.

[0022] A photovoltaic module manufacturing equipment includes at least a conveyor line, a lamination structure, and an edge sealing structure as described in any of the above embodiments;

[0023] The conveyor line is provided at least on the side of the edge sealing structure and the laminating structure. The conveyor line is used to convey the laminated assembly to the edge sealing structure and to convey the edge-sealed laminated assembly to the laminating structure.

[0024] By adopting the above technical solution, this application has at least the following technical effects:

[0025] The edge-sealing structure and photovoltaic module production equipment disclosed in this application include an edge-sealing structure in which two pressure roller assemblies are symmetrically arranged along the height direction, clamping the edge of the stacked module between the two pressure roller assemblies. The pressure roller assemblies can perform edge-sealing operations on the stacked module when they move. A distance detection element is provided corresponding to at least one pressure roller assembly. After the pressure roller assemblies clamp the edge of the stacked module, the distance detection element can detect the distance between its position and the edge of the stacked module, thereby detecting the pressing distance of the pressure roller assemblies on the edge of the stacked module, thus ensuring a preset distance between the pressure roller assemblies and the edges of the solar cells in the stacked module.

[0026] This edge-sealing structure uses a distance detection component that is correspondingly set with at least one pressure roller assembly. When the two pressure roller assemblies clamp the stacked assembly for edge sealing, the distance detection component can detect the distance between its position and the edge of the stacked assembly, thereby detecting the pressing distance of the pressure roller assembly on the edge of the stacked assembly. This ensures that there is a certain distance between the pressure roller assembly and the edge of the solar cells in the stacked assembly, preventing the solar cells from cracking due to excessive clamping force, improving the yield of photovoltaic modules, and reducing production costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the edge sealing structure according to an embodiment of this application.

[0028] Figure 2 for Figure 1 The diagram shown illustrates the edge sealing structure and the laminated components from one perspective.

[0029] Figure 3 for Figure 2 The diagram shown illustrates the edge sealing structure in conjunction with the stacked components from another perspective.

[0030] Figure 4 for Figure 2 The diagram shown illustrates the edge sealing structure and the laminated components from another perspective.

[0031] Figure 5 for Figure 2 The front view showing the edge sealing structure in conjunction with the stacked components.

[0032] Figure 6 for Figure 5 The side view shown shows the edge sealing structure in conjunction with the stacked components.

[0033] Figure 7 for Figure 5 The diagram shows a bottom view of the edge sealing structure in conjunction with the laminated components.

[0034] Wherein: 100, edge sealing structure; 110, pressure roller assembly; 111, support frame; 112, pressing roller; 1121, mounting hole; 1122, first end; 1123, second end; 120, distance detection component; 130, support assembly; 131, support column; 132, support plate; 200, stacked assembly. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Understandably, during the manufacturing process of photovoltaic modules, it is necessary to seal the four edges of the double-glass module. The sealing process involves installing PET (polyethylene terephthalate) perforated tape on the four sides of the double-glass module to prevent the adhesive film from overflowing onto the front and back of the module during the lamination process, which would increase the difficulty of cleaning.

[0042] Currently, during the edge sealing process of double-glazed modules, the clamping rollers of the edge sealing machine clamp the upper and lower glass layers. During this process, when the rollers press against or approach the solar cells, excessive clamping force can cause the solar cells to crack, affecting the product quality of the photovoltaic modules.

[0043] For this purpose, please refer to Figures 1 to 4 This application provides an edge sealing structure 100. This edge sealing structure 100 is applied in photovoltaic module manufacturing equipment. Figure 1 This is a schematic diagram of the edge sealing structure 100 according to an embodiment of this application. Figure 2 for Figure 1 The diagram shown illustrates the edge-sealing structure 100 and the laminated assembly 200 from one perspective. Figure 3 for Figure 2 The diagram shown illustrates the edge-sealing structure 100 and the laminated assembly 200 from another perspective. Figure 4 for Figure 2 The diagram shown illustrates the edge sealing structure 100 and the laminated assembly 200 in conjunction with another viewpoint.

[0044] The edge-sealing structure 100 of this application can be used to seal the edges of the tandem module 200 to facilitate the manufacturing of photovoltaic modules. It is understood that the tandem module 200 of this application is a semi-finished module in the photovoltaic module manufacturing process. To better illustrate the specific structure of the edge-sealing structure 100, the structure of the tandem module 200 is briefly described here. The tandem module 200 includes at least a front cover plate (not shown), a back cover plate (not shown), and solar cells (not shown), with the solar cells disposed between the front cover plate and the back cover plate. Optionally, both the front cover plate and the back cover plate are photovoltaic glass; alternatively, the front cover plate can be photovoltaic glass, and the back cover plate can be a backsheet.

[0045] After the solar cells are placed between the front cover plate and the back cover plate, a laminated module 200 is formed. Subsequently, the laminated module 200 needs to be edge-sealed, that is, the edges of the front cover plate and the back cover plate need to be sealed. This can prevent the adhesive film from overflowing from the edges of the laminated module 200 during the lamination process, so as to ensure the product quality of the photovoltaic module.

[0046] Typically, the edge sealing structure 100 of this application is used to seal the edge of the laminated assembly 200. The edge sealing structure 100 clamps the edge of the laminated assembly 200. During the movement of clamping the laminated assembly 200, the edge sealing structure 100 can install PET (polyethylene terephthalate) perforated tape around the laminated assembly 200 to achieve edge sealing of the laminated assembly 200.

[0047] Understandably, after the solar cells are installed between the front and back covers, there is a certain gap between the edge of the solar cell and the edges of the front and back covers. The edge sealing structure 100 clamps the edge of the laminated assembly 200. During this movement, if the edge sealing structure 100 moves and presses against or near the edge of the solar cell, excessive clamping force can cause the solar cell to crack.

[0048] After the edge-sealing structure 100 of this application is used to seal the edge of the stacked module 200, the pressing distance of the edge-sealing structure 100 against the edge of the stacked module 200 can be detected, so that there is a preset distance between the edge-sealing structure 100 and the edge of the solar cell. This avoids excessive clamping force of the edge-sealing structure 100 on the stacked module 200, which could cause the solar cell to crack, thereby improving the yield of photovoltaic modules and reducing production costs. The following describes the specific structure of the edge-sealing structure 100 in some embodiments.

[0049] See Figures 1 to 7 In one embodiment, the edge sealing structure 100 includes two pressure roller assemblies 110 and a distance detection element 120. The two pressure roller assemblies 110 are symmetrically arranged along the height direction and are used to clamp the edge of the stacked assembly 200. When the pressure roller assemblies 110 move, they can seal the edge of the stacked assembly 200. The distance detection element 120 is disposed on at least one pressure roller assembly 110 and is used to detect the pressing distance between the pressure roller assembly 110 and the edge of the stacked assembly 200 when the pressure roller assembly 110 clamps the stacked assembly 200, so that there is a preset distance between the pressure roller assembly 110 and the edge of the battery cell in the stacked assembly 200. Figure 5 for Figure 2 The front view shown depicts the edge sealing structure 100 assembling with the laminated assembly 200. Figure 6 for Figure 5 The side view shown depicts the edge sealing structure 100 mating with the laminated assembly 200. Figure 7 for Figure 5 The bottom view shows the edge sealing structure 100 mating with the laminated assembly 200.

[0050] The pressure roller assembly 110 is the main component for sealing the edge of the edge sealing structure 100. There are two pressure roller assemblies 110, symmetrically arranged along the height direction, and the ends of the pressure roller assemblies 110 can abut against the surface of the laminated assembly 200. Figures 1 to 7 In the diagram, only one pressure roller assembly 110 is shown. In reality, two pressure roller assemblies 110 are used to clamp the stacked assembly 200, with one pressure roller assembly 110 located above the stacked assembly 200 and the other pressure roller assembly 110 located below the stacked assembly 200.

[0051] The two pressure roller assemblies 110 can clamp the edges of the laminated assembly 200 and apply clamping force to the edges of the laminated assembly 200 to bring the edges of the front cover and the back cover closer together. At the same time, other components of the edge sealing structure 100, such as the adhesive application assembly (not shown), can apply PET perforated tape to the edges of the laminated assembly 200. In this way, when the two pressure roller assemblies 110 clamp and move the laminated assembly 200, the edge sealing operation of the laminated assembly 200 can be performed.

[0052] The distance detection element 120 is a component of the sealing structure 100 that enables distance detection. The distance detection element 120 is disposed on the pressure roller assembly 110. After the pressure roller assembly 110 abuts against the surface of the stacked assembly 200, the distance detection element 120 can detect the distance between its position and the edge of the stacked assembly 200, and thus detect the pressing distance between the stacked assembly 200 and its edge. In other words, the distance detection element 120 can detect its pressing distance to the edge of the stacked assembly 200.

[0053] Understandably, the distance between the edge of the solar cell and the edge of the laminated assembly 200 is a constant. After the distance detection element 120 detects the pressing distance, the distance between the edge of the solar cell and the edge of the laminated assembly 200 minus the pressing distance is the distance between the pressure roller assembly 110 and the edge of the solar cell. In other words, the distance between the pressure roller assembly 110 and the edge of the solar cell can be obtained after the distance detection element 120 detects the pressing distance of the pressure roller assembly 110 on the edge of the laminated assembly 200.

[0054] When the two pressure roller assemblies 110 clamp the laminated assembly 200, the distance detection element 120 detects the distance between itself and the edge of the laminated assembly 200, and then obtains the distance at which the pressure roller assembly 110 presses the edge of the battery cell, so as to ensure that there is a certain distance between the pressure roller assembly 110 and the battery cell. When the two pressure roller assemblies 110 move to clamp the laminated assembly 200, because there is a preset distance between the pressure roller assembly 110 and the edge of the battery cell, even if the pressure roller assembly 110 clamps with a large force, the pressure roller assembly 110 will not shift or approach the edge of the battery cell, thereby avoiding the situation of the battery cell cracking during edge sealing.

[0055] Optionally, a distance detection element 120 is provided on each pressure roller assembly 110. In this way, the distance detection element 120 can detect the pressing distance between the corresponding pressure roller assembly 110 and the edge of the stacked assembly 200, ensuring that both pressure roller assemblies 110 have a preset distance from the edge of the battery cell. Of course, in other embodiments of this application, the distance detection element 120 may also be provided on one of the pressure roller assemblies 110.

[0056] In the edge sealing structure 100 of the above embodiment, a distance detection element 120 is correspondingly set with at least one pressure roller assembly 110. In this way, when the two pressure roller assemblies 110 clamp the stacked assembly 200 for edge sealing, the distance detection element 120 can detect the distance between its position and the edge of the stacked assembly 200, thereby detecting the pressing distance of the pressure roller assembly 110 on the edge of the stacked assembly 200. This ensures that there is a certain distance between the pressure roller assembly 110 and the edge of the solar cell in the stacked assembly 200, avoiding the solar cell cracking caused by excessive clamping force of the pressure roller assembly 110, improving the yield of photovoltaic modules and reducing production costs.

[0057] In one embodiment, the distance detection element 120 can detect whether the pressing distance of the pressure roller assembly 110 pressing against the edge of the stacked assembly 200 exceeds the safe distance. By determining whether the pressing distance exceeds the safe distance, it can be determined whether the battery cell will crack when the pressure roller assembly 110 clamps the edge of the stacked assembly 200.

[0058] Understandably, if the pressing distance does not exceed the safe distance, it indicates that there is a certain distance between the pressing roller assembly 110 and the battery cell. This distance can prevent the battery cell from cracking due to excessive clamping force of the pressing roller assembly 110. The pressing roller assembly 110 can seal the edges of the stacked assembly 200.

[0059] When the pressing distance exceeds the full distance, it indicates that the distance between the pressing roller and the battery cell is too small, and the pressing roller assembly 110 is shifting or approaching the edge of the battery cell. At this time, it is necessary to adjust the position of the pressing roller assembly 110 relative to the stacked assembly 200 so that the pressing distance is within the safe distance range, and then use the pressing roller assembly 110 to seal the edge of the stacked assembly 200.

[0060] In other words, after detecting the pressing distance of the pressure roller assembly 110 pressing onto the edge of the laminated module 200, the distance detection component 120 can also determine whether the pressing distance exceeds a preset distance. If the preset distance does not exceed the safety distance, the pressure roller assembly 110 can perform the edge sealing operation normally. Once the safety distance is exceeded, the position of the pressure roller assembly 110 needs to be adjusted to avoid cell cracking and improve the yield of photovoltaic modules.

[0061] In one embodiment, the safety distance ranges from 5mm to 8mm. It is understood that the distance between the edge of the solar cell and the edge of the long side of the stacked assembly 200 is between 12.5mm and 13mm. When the safety distance is within the range of 5mm to 8mm, a preset gap can be maintained between the pressure roller assembly 110 and the edge of the solar cell, preventing the pressure roller assembly 110 from shifting or approaching the edge of the solar cell.

[0062] For example, the safety distance is 7mm. The pressing distance detected by the distance detection element 120 must be less than or equal to 7mm to ensure the distance between the pressure roller assembly 110 and the battery cell. Of course, in other embodiments of this application, the size of the safety distance can also be other, as long as it can ensure the distance between the pressure roller assembly 110 and the battery cell and prevent the pressure roller assembly 110 from shifting or approaching the edge of the battery cell.

[0063] In one embodiment, the distance detection element 120 is a distance sensor. The distance sensor can detect the distance between itself and the edge of the stacked assembly 200, thereby obtaining the pressing distance of the pressure roller assembly 110 pressing against the edge of the stacked assembly 200. In this embodiment, the distance detection element 120 is a laser sensor, which can detect the pressing distance of the pressure roller assembly 110 pressing against the edge of the stacked assembly 200 by infrared or laser ranging. Of course, in other embodiments of this application, the distance detection element 120 may also be an ultrasonic sensor or other components capable of distance detection.

[0064] See Figures 1 to 7 In one embodiment, after the pressure roller assembly 110 abuts against the surface of the stacked assembly 200, the distance detection element 120 can be directly facing the stacked assembly 200. When the two pressure roller assemblies 110 clamp the edge of the stacked assembly 200, the pressure roller assembly 110 can abut against the surface of the stacked assembly 200. At this time, the distance detection element 120 can be directly facing the surface of the stacked assembly 200, which facilitates the detection of its distance from the edge of the stacked assembly 200.

[0065] See Figures 1 to 7 In one embodiment, the pressure roller assembly 110 includes opposing support frames 111 and pressure rollers 112. The support frames 111 can support and mount the pressure rollers 112, and the two axial ends of the pressure rollers 112 are rotatably connected to the support frames 111. A distance detection element 120 is disposed on the pressure rollers 112, and the pressure rollers 112 can press against the stacked assembly 200.

[0066] The support frame 111 provides support for the pressure roller assembly 110. The support frame 111 is disposed on the support assembly 130 of the edge sealing structure 100 (mentioned later). Two support frames 111 are arranged opposite each other, and the axial ends of the pressure rollers 112 are mounted on the support frame 111. When the two pressure roller assemblies 110 clamp the laminated assembly 200, the pressure rollers 112 can abut against the surface of the laminated assembly 200. Furthermore, the pressure rollers 112 are rotatably mounted to the support frame 111.

[0067] When the two pressure roller assemblies 110 clamp and move along the edge of the laminate assembly 200, the pressure roller 112 can rotate along the edge of the laminate assembly 200 to seal the edge of the laminate assembly 200. Furthermore, a distance detection element 120 is provided on the pressure roller 112. When the pressure roller 112 abuts against the surface of the laminate assembly 200, the distance detection element 120 on the pressure roller 112 can face the surface of the laminate assembly 200, facilitating the detection of its distance from the edge of the laminate assembly 200.

[0068] See Figures 1 to 7In one embodiment, the clamping roller 112 has a radially penetrating mounting hole 1121, in which a distance detection element 120 is disposed. The mounting hole 1121 radially penetrates the outer peripheral surface of the clamping roller 112, and the distance detection element 120 is located within the mounting hole 1121. When the clamping roller 112 abuts against the surface of the stacked assembly 200, the distance detection element 120 on the clamping roller 112 can be directly facing the surface of the stacked assembly 200, facilitating the detection of its distance from the edge of the stacked assembly 200.

[0069] In one embodiment, the surface of the distance detection element 120 is coplanar with the outer peripheral surface of the pressure roller 112. This ensures that the distance detection element 120 does not protrude from the outer peripheral surface of the pressure roller 112, guaranteeing that the pressure roller 112 accurately presses against the edge of the stacked assembly 200 and preventing interference between the distance detection element 120 and the stacked assembly 200. Of course, in other embodiments of this application, the surface of the distance detection element 120 may also be recessed from the outer peripheral surface of the pressure roller 112. This also ensures that the distance detection element 120 does not protrude from the outer peripheral surface of the pressure roller 112.

[0070] See Figures 1 to 7 In one embodiment, the clamping roller 112 has a first end 1122 and a second end 1123 opposite each other along the axial direction. The first end 1122 of the clamping roller 112 is aligned with the edge of the stacked assembly 200, and the distance detection element 120 is positioned close to the second end 1123 of the clamping roller 112. Figure 1 and Figure 2 As shown, the right end of the clamping wheel 112 is the first end 1122, and the left end is the second end 1123.

[0071] After the two pressure roller assemblies 110 clamp the laminate assembly 200, the first end 1122 of the pressure roller 112 is aligned with the edge of the laminate assembly 200, and the distance detection element 120 is positioned close to the second end 1123 of the pressure roller 112. In this way, after the distance detection element 120 detects the distance between itself and the edge of the laminate assembly 200, the pressing distance of the pressure roller 112 on the edge of the laminate assembly 200 can be obtained.

[0072] Understandably, the edge sealing structure 100 also includes a centering component (not shown). Between the two pressure roller assemblies 110 clamping the stacked assembly 200, the centering component adjusts the position of the stacked assembly 200 to improve the positional accuracy of the two pressure roller assemblies 110 clamping the stacked assembly 200, thereby aligning the first end 1122 of the pressing roller 112 with the edge of the stacked assembly 200, which facilitates the detection of the pressing distance by the distance detection element 120.

[0073] See Figures 1 to 7In one embodiment, the edge sealing structure 100 further includes two support components 130, which are symmetrically arranged. A pressure roller assembly 110 is installed at one end of each support component 130. The support component 130 is a structure that supports the pressure roller assembly 110. There are two support components 130, and each support component 130 corresponds to one pressure roller assembly 110.

[0074] Support components 130 are provided on the edge sealing host of the edge sealing structure 100. Two support components 130 are symmetrically arranged. A pressure roller assembly 110 is installed at one end of each support component 130. The support frame 111 in the pressure roller assembly 110 is provided on the support component 130 so that the two pressure roller assemblies 110 can be symmetrically arranged to clamp the stacked assembly 200.

[0075] See Figures 1 to 7 In one embodiment, the support assembly 130 includes a support column 131 and a support plate 132. The support plate 132 is disposed at one end of the support column 131, and the support column 131 is connected to the edge sealing host of the edge sealing structure 100. The support frame 111 is disposed on the support plate 132. The support column 131 is the component that supports and installs the support assembly 130. The support column 131 extends along the height direction. The support plate 132 is disposed at the bottom of the support column 131. The support plate 132 is the component that supports and installs the pressure roller assembly 110. The two support frames 111 of the pressure roller assembly 110 are mounted on the support plate 132.

[0076] See Figures 1 to 7 In one embodiment, the edge sealing structure 100 further includes an edge sealing host (not shown), and two support components 130 are symmetrically arranged on the edge sealing host. The edge sealing host drives the support components 130 to drive the pressure roller assembly 110 to move, so that the two pressure roller assemblies 110 clamp or release the stacked assembly 200, and drive the pressure roller assembly 110 to seal the edge of the stacked assembly 200.

[0077] The edge banding host is a structure that drives the pressure roller assembly 110 to move. Two support assemblies 130 are symmetrically arranged on the edge banding host. The edge banding host drives the support assemblies 130 to drive the pressure roller assembly 110 to move, so that the two pressure roller assemblies 110 move closer or further away from each other in the height direction, thereby enabling the two pressure roller assemblies 110 to clamp or release the stacked assembly 200.

[0078] After the two pressure roller assemblies 110 clamp the laminate assembly 200, the pressing distance is detected by the distance detection element 120. When the pressing distance is within the safe distance range, the edge sealing host can drive the two pressure roller assemblies 110 to move relative to the laminate assembly 200, so that the pressing roller 112 can perform edge sealing operation on the edge of the laminate assembly 200.

[0079] It is worth noting that the focus of this application is on the cooperation between the pressure roller assembly 110 and the distance detection component 120. Other structures in the edge sealing structure 100, such as the adhesive application assembly, the centering assembly, and the edge sealing host, are not the focus of this application. Existing structures can be used, and this application will not elaborate on them.

[0080] See Figures 1 to 7 In one embodiment, the sealing structure 100 further includes an alarm component (not shown), which is electrically connected to the distance detection component 120. The alarm component can issue an alarm when the pressing distance detected by the distance detection component 120 exceeds the safe distance.

[0081] The alarm component is a prompting component of the sealing structure 100, and the alarm component is electrically connected to the distance detection component 120. When the pressing distance detected by the distance detection component 120 does not exceed the safe distance, the alarm component does not issue an alarm prompt, indicating that there is a certain distance between the pressing roller 112 and the edge of the battery cell. At this time, the pressing roller assembly 110 normally seals the edge of the stacked assembly 200.

[0082] When the pressing distance detected by the detector 120 exceeds the safe distance, the alarm component issues an alarm, indicating that the pressing roller 112 has shifted or approached the edge of the battery cell, which may easily cause the battery cell to crack. At this time, the sealing structure 100 automatically stops or the operator manually stops the machine. The operator readjusts the position of the pressing roller assembly 110 until the pressing distance detected by the detector 120 does not exceed the safe distance. Subsequently, the pressing roller assembly 110 seals the edge of the laminated assembly 200 normally.

[0083] In this embodiment, the alarm component is a display screen, which can display alarm prompts. It is understood that the sealing structure 100 has a display screen, and the alarm component is integrated into the display screen. When the pressing distance detected by the distance detection element 120 exceeds the safe distance, an alarm message is displayed on the display screen. After seeing the alarm prompt on the display screen, the operator can adjust the position of the pressure roller assembly 110.

[0084] Of course, in other embodiments of this application, the alarm component may also be a buzzer. When the pressing distance detected by the distance detection component 120 exceeds the safe distance, the buzzer will sound an alarm to prompt the operator to readjust the position of the pressure roller assembly 110. Alternatively, the alarm component may also be an indicator light. When the pressing distance detected by the distance detection component 120 exceeds the safe distance, the indicator light may remain on or flash to prompt the operator to readjust the position of the pressure roller assembly 110.

[0085] Moreover, after the alarm component alarms, it cannot be manually reset directly. Only after the position of the pressure roller assembly 110 is readjusted and the pressing distance detected by the detection component 120 is within the safe distance range, can the sealing structure 100 work normally.

[0086] The edge sealing structure 100 of this application is configured with a distance detection element 120 corresponding to at least one pressure roller assembly 110. When the two pressure roller assemblies 110 clamp the stacked assembly 200 for edge sealing, the distance detection element 120 can detect the distance between its position and the edge of the stacked assembly 200, thereby detecting the pressing distance of the pressure roller assembly 110 on the edge of the stacked assembly 200. This ensures that there is a certain distance between the pressure roller assembly 110 and the edge of the solar cell in the stacked assembly 200, avoiding solar cell cracking due to excessive clamping force of the pressure roller assembly 110, improving the yield of photovoltaic modules and reducing production costs.

[0087] When the pressing distance detected by the distance detection element 120 is within the safe distance range, the alarm component does not issue an alarm, and the pressure roller assembly 110 can normally seal the edge of the stacked module 200. When the pressing distance detected by the distance detection element 120 exceeds the safe distance, the alarm component issues an alarm to prompt the operator to adjust the position of the pressure roller assembly 110, effectively avoiding cell cracking caused by the positional deviation of the pressure roller assembly 110, and improving the yield of photovoltaic modules.

[0088] Meanwhile, this application can be directly improved on the existing equipment by installing a distance detection element 120 on the pressure roller 112, so that the distance detection element 120 can detect the distance between its position and the edge of the stacked assembly 200, thereby detecting the pressing distance of the pressure roller assembly 110 pressing on the edge of the stacked assembly 200, so that there is a preset distance between the pressure roller assembly 110 and the edge of the battery cell in the stacked assembly 200.

[0089] This application also provides a photovoltaic module manufacturing equipment, which includes at least a conveyor line (not shown), a laminating structure (not shown), and an edge-sealing structure 100 as described in any of the above embodiments. The conveyor line is at least disposed on the side of the edge-sealing structure 100 and the laminating structure, and is used to convey the stacked module 200 to the edge-sealing structure 100 and to the laminating structure after edge sealing.

[0090] The conveyor line enables continuous transport of semi-finished photovoltaic modules, allowing them to be delivered to various processing stages for corresponding operations. When the conveyor line transports the tandem module 200 to the edge-sealing structure 100, the edge-sealing structure 100 performs an edge-sealing operation on the tandem module 200. Subsequently, the conveyor line transports the edge-sealed tandem module 200 to the lamination structure, where it is laminated. The laminated tandem module 200 is then processed to ultimately form the photovoltaic module.

[0091] After adopting the sealing structure 100 of the above embodiment, the photovoltaic module production equipment of this application can avoid the cell cracking caused by the sealing structure 100 sealing the edge of the stacked module 200, reduce the risk of cell cracking, improve the yield of photovoltaic modules, and reduce production costs.

[0092] 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.

[0093] 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. An edge sealing structure, characterized by, For sealing the edges of a stacked assembly, the sealing structure includes: Two pressure roller assemblies, symmetrically arranged along the height direction, are used to clamp the edges of the stacked assembly, and the pressure roller assemblies can seal the edges of the stacked assembly when they move; and A distance detection element is disposed on at least one of the pressure roller assemblies. The distance detection element is used to detect the pressing distance between the pressure roller assembly and the edge of the stacked assembly when the pressure roller assembly clamps the stacked assembly, so that there is a preset distance between the pressure roller assembly and the edge of the battery cell in the stacked assembly.

2. The edge-wrapped structure of claim 1, wherein, The distance detection device can detect whether the pressing distance of the pressure roller assembly on the edge of the stacked assembly exceeds the safe distance, which is in the range of 5mm to 8mm. And / or, after the pressure roller assembly comes into contact with the surface of the stacked assembly, the distance detection element faces the stacked assembly.

3. The edge-wrapped structure of claim 1, wherein, The pressure roller assembly includes opposing support frames and a pressure roller. The support frames can support and mount the pressure roller, and the two axial ends of the pressure roller are rotatably connected to the support frames. The distance detection element is disposed on the pressure roller, which is capable of pressing against the stacked assembly.

4. The edge-wrapped structure of claim 3, wherein, The clamping wheel has a radially penetrating mounting hole, and the distance detection element is disposed in the mounting hole, wherein the surface of the distance detection element is coplanar with the outer peripheral surface of the clamping wheel, or the surface of the distance detection element is recessed into the outer peripheral surface of the clamping wheel; And / or, the clamping wheel has a first end and a second end opposite each other along the axial direction, the first end of the clamping wheel is aligned with the edge of the stacked assembly, and the distance detection element is disposed near the second end of the clamping wheel.

5. The edge-wrapped structure of claim 3, wherein, The edge sealing structure also includes two support components, which are symmetrically arranged, and a pressure roller assembly is installed at one end of each support component.

6. The edge-wrapped structure of claim 5, wherein, The support assembly includes a support column and a support plate. The support plate is disposed at one end of the support column. The support column is connected to the edge sealing host of the edge sealing structure. The support frame is disposed on the support plate. And / or, the edge sealing structure further includes an edge sealing host, with two support components symmetrically arranged on the edge sealing host. The edge sealing host drives the support components to move the pressure roller assembly, so that the two pressure roller assemblies clamp or release the stacked assembly, and drive the pressure roller assembly to seal the edge of the stacked assembly.

7. The edge-wrapped structure of any one of claims 1 to 6, wherein, The distance detection device is a laser sensor or an ultrasonic sensor.

8. The edge-wrapped structure of any one of claims 1 to 6, wherein, The edge sealing structure also includes an alarm component, which is electrically connected to the distance detection element. The alarm component can issue an alarm when the pressing distance detected by the distance detection element exceeds the safe distance.

9. The edge-wrapped structure of claim 8, wherein, The alarm component is a display screen, which can display alarm prompts; Alternatively, the alarm component may be a buzzer; Alternatively, the alarm component may be an indicator light.

10. An apparatus for producing a photovoltaic module, characterized by It includes at least a conveyor line, a lamination structure, and an edge sealing structure as described in any one of claims 1 to 9; The conveyor line is provided at least on the side of the edge sealing structure and the laminating structure. The conveyor line is used to convey the laminated assembly to the edge sealing structure and to convey the edge-sealed laminated assembly to the laminating structure.

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