A photovoltaic module lamination tool
The frame and limiting component structure solves the problems of cell chip movement and insufficient bonding during photovoltaic module lamination, achieving efficient vacuuming and strength assurance, and reducing equipment costs and energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI UTMOST LIGHT TECH CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing photovoltaic module lamination process, the battery chips tend to move to both sides of the seam, and the adhesive film is not fully bonded to each layer of glass in the module, which affects the vacuuming effect. Moreover, the existing equipment is costly and energy-intensive.
The structure employs a frame and limiting components. The frame surrounds the outer sidewall of the photovoltaic module, while the limiting components can be adjusted to abut against the sidewall of the battery chip. When used in conjunction with a laminator, it prevents the silicone plate from deforming and the battery chip from moving, ensuring effective vacuuming and bonding.
It effectively prevents the seams from widening and bubbles from forming, ensures the bonding strength of each layer of the photovoltaic module, simplifies the vacuuming process, and reduces equipment costs and energy consumption.
Smart Images
Figure CN224402010U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic technology, specifically to a photovoltaic module lamination tooling. Background Technology
[0002] like Figure 3 As shown, photovoltaic module 1 includes a glass backsheet 21, battery cells 22, encapsulant layer 23, and glass front panel 24. Generally, the size of the battery cells is fixed. However, for some types of photovoltaic modules, such as perovskite and cadmium telluride photovoltaic modules, there are more requirements for the size of the photovoltaic module, especially for BIPV (Building Integrated Photovoltaics) modules. To meet different size requirements for photovoltaic modules, it is often necessary to use double or even quadruple battery cells. For perovskite photovoltaic modules, due to their easy decomposition and easy delamination issues, and because PVB (polyvinyl butyral) has strong water absorption, high moisture content, and large thermal shrinkage, it is currently difficult to use PVB directly as the encapsulant layer in direct contact with the battery cells. Currently, only POE (polyolefin elastomer), which has extremely low water absorption and poor shrinkage, can be used as the encapsulant layer.
[0003] PoE (Power over Emulsion) has high fluidity, and currently two methods are generally used to reduce the impact of encapsulant flow on the assembly of photovoltaic modules. One method is to use an autoclave for encapsulation. High-pressure gas inside the autoclave compresses a vacuum bag to bind and fix the chips, preventing them from shifting too much to the sides due to encapsulant flow, thus preventing widening of the seams or even missing encapsulant bubbles. However, autoclave encapsulation is time-consuming, energy-intensive, and the equipment is expensive.
[0004] Another method is to use a laminator to encapsulate the photovoltaic module. During the lamination process, the pressure generated by the pressure difference between the upper and lower chambers of the laminator squeezes the silicone sheet, which is then pressed onto the photovoltaic module. The edges of the silicone sheet are prone to downward deformation, which causes excessive deformation of the glass backsheet at the edge of the photovoltaic module. After the photovoltaic module is removed from the laminator, the rebound stress of the glass backsheet is very large, which makes it easy for air bubbles to form at the edge of the encapsulant film. To prevent damage to adjacent battery chips from hard contact during lamination, an adhesive film is filled between the seams of adjacent battery chips. The adhesive film itself is porous, and after lamination and melting, the seam is actually in a state of adhesive deficiency. The adhesive film above the battery chip is squeezed into the seam, causing the adhesive film above the battery chip to sag. The glass backplate above the adhesive film will also sag at the seam, which will push the battery chips on both sides of the seam to move to the sides. The adhesive film has high fluidity after melting, which causes the seam to become larger and larger, and the adhesive deficiency in the seam to become more and more serious. The glass backplate also squeezes the battery chips more and more severely at the seam, eventually causing the battery chips on both sides of the seam to overflow severely. With adhesive deficiency at the seam, the glass backplate is prone to generating air bubbles at the seam after lamination.
[0005] To reduce the impact of encapsulant flowability, lamination time and pressure need to be reduced during lamination, and tape needs to be wrapped around the photovoltaic module. Reducing lamination time can decrease encapsulant flowability, and reducing lamination pressure can slow down the movement of the battery cells due to compression. However, reducing lamination time and pressure carries the risk of insufficient adhesion between the encapsulant and the various glass layers of the module. Furthermore, wrapping the photovoltaic module with tape to restrict the movement of the battery cells requires high tape strength. The tape can only effectively restrain the battery cells when their edges are flush with or extend beyond the edges of the glass backsheet and frontsheet, which is difficult to achieve in actual photovoltaic module layer installation. Additionally, vacuuming is required before lamination, and wrapping the photovoltaic module with tape will affect the vacuuming effect. Utility Model Content
[0006] In view of this, the present invention provides a photovoltaic module lamination fixture to solve the problems of cell chips easily moving to both sides of the seam, insufficient adhesion between the adhesive film and the glass layers of the module, and affecting the vacuuming effect when spliced photovoltaic modules are laminated and packaged by a laminator.
[0007] In a first aspect, this utility model provides a photovoltaic module lamination fixture, comprising:
[0008] A frame is suitable for surrounding the periphery of the photovoltaic module and spaced apart from the periphery of the photovoltaic module, wherein the photovoltaic module includes a plurality of battery chips sequentially spliced along a first direction;
[0009] Multiple limiting components are disposed on the frame located at both ends of the first direction; and are spaced apart on the frame perpendicular to the splicing direction; the limiting components are disposed on the frame in a displacement adjustable manner in the first direction, and one end of the limiting component is adapted to abut against the sidewall of the battery chip located at both ends of the first direction.
[0010] Beneficial effects: When using this photovoltaic module laminating fixture, the frame is placed around the outer periphery of the photovoltaic module, and the inner sidewall of the frame is spaced apart from the periphery of the photovoltaic module. One end of the limiting component abuts against the sidewall of the battery chip located at both ends in the first direction. The photovoltaic module and the laminating fixture are placed together into the laminating chamber of the laminating machine, and the laminating chamber is evacuated to remove the gas inside the laminating chamber and the photovoltaic module. After heating, pressure lamination is performed. During lamination, the edge of the silicone plate of the laminator abuts against the top of the frame. The frame can limit the excessive downward deformation of the silicone plate, thereby preventing the edge of the silicone plate from excessively pressing down on the glass back sheet. This reduces the deformation of the glass back sheet edge. After the photovoltaic module is removed from the lamination chamber, it reduces the rebound stress of the glass back sheet, preventing excessive rebound at the edge of the glass back sheet and the formation of air bubbles at the edge of the encapsulant layer. At the same time, the limiting component abuts against the sides of the battery chips on both sides along the splicing direction of multiple battery chips, preventing the battery chips on both sides of the splice from moving to the sides during lamination. This effectively prevents the splice from widening, prevents excessive deformation of the glass back sheet above the splice, and prevents air bubbles from forming at the splice due to the rebound of the glass back sheet after lamination. It also prevents the battery chip from moving too much and causing its edge to extend beyond the glass back sheet and / or glass front sheet. There is no need to use tape to limit the perimeter of the photovoltaic module, and the frame is spaced apart from the perimeter of the photovoltaic module to facilitate the discharge of gas inside the photovoltaic module, which can ensure the vacuum effect; there is no need to reduce the lamination time and pressure during the lamination process, which can ensure the bonding strength between the glass layers of the photovoltaic module.
[0011] In one optional embodiment, the limiting component includes a connecting rod and an elastic buffer; one end of the connecting rod is movably and adjustably disposed on the frame, and the other end extends toward the inside of the frame; the elastic buffer is disposed at the end of the connecting rod toward the inside of the frame, and the elastic buffer is adapted to abut against the sidewall of the battery chip located at both ends in a first direction.
[0012] In one optional embodiment, the connecting rod is cylindrical, with external threads on its outer peripheral wall and internal threads on the frame, and the connecting rod is threadedly connected to the frame.
[0013] In one alternative embodiment, the elastic buffer has a plurality of anti-slip protrusions on the side facing the inside of the frame.
[0014] In one alternative embodiment, along a direction perpendicular to the axis of the connecting rod, the cross-section of the elastic buffer member facing the end of the connecting rod is larger than the cross-section of the elastic buffer member facing the inner side of the frame.
[0015] In one alternative implementation, the border is rectangular, and the length and / or width of the border is adjustable.
[0016] In one optional embodiment, a positioning element is also included. The frame includes four support rails that are spliced end to end. The end of each support rail is slidably disposed on another support rail adjacent to it. After the support rail is slid into place, the positioning element locks and positions the support rail.
[0017] In one optional embodiment, the support rail includes a support portion and a guide rail portion, with one end of the connecting rod disposed on the support portion; the guide rail portion is disposed on the side of the support portion facing the inner side of the frame, and the guide rail portion is provided with a sliding groove, and each support portion has a pulley at its tail end, the pulley being slidably disposed in the sliding groove; the top of the pulley and the top of the guide rail portion do not exceed the bottom surface of the connecting rod.
[0018] In one optional embodiment, the guide rail portion on both sides of the slide groove width direction is provided with a plurality of positioning slots arranged at intervals along the length direction of the slide groove, and the positioning component includes a plurality of positioning blocks. After the support guide rail slides into position, the positioning blocks are engaged in the positioning slots on both sides of the pulley.
[0019] In one alternative implementation, the height of the frame is adjustable, and / or the connecting rod is height-adjustably disposed on the frame. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram illustrating the cooperation between a photovoltaic module lamination fixture and splicing battery chips according to an embodiment of the present invention;
[0022] Figure 2 for Figure 1 Enlarged view of part A in the middle;
[0023] Figure 3 This is a schematic diagram of the cooperation between a limiting component and a battery chip in a photovoltaic module lamination tooling according to an embodiment of the present invention;
[0024] Figure 4 for Figure 1 Front view of the middle limit component;
[0025] Figure 5 for Figure 1 Side view of the middle limit component;
[0026] Figure 6 This is a schematic diagram of a photovoltaic module lamination tooling according to an embodiment of the present utility model;
[0027] Figure 7 for Figure 6 Enlarged view of part B in the middle;
[0028] Figure 8 for Figure 6 Enlarged view of a section in the middle C;
[0029] Figure 9 for Figure 6 Enlarged view of a section in part D;
[0030] Figure 10 This is a schematic diagram of the cooperation between pulleys, positioning components and sliding grooves in a photovoltaic module lamination tooling according to an embodiment of this utility model.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Photovoltaic module lamination fixture; 11. Frame; 111. Support rail; 1111. Support part; 1112. Rail part; 11121. Slide groove; 11122. Positioning slot; 12. Limiting component; 121. Connecting rod; 122. Elastic buffer; 1221. Anti-slip protrusion; 13. Positioning component; 14. Pulley; 2. Photovoltaic module; 21. Glass back sheet; 22. Battery chip; 23. Encapsulant layer; 24. Glass front sheet. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0034] The following is combined with Figures 1 to 10 The following describes embodiments of the present invention.
[0035] According to an embodiment of the present invention, a photovoltaic module lamination fixture 1 is provided, including a frame 11 and a plurality of limiting components 12.
[0036] The frame 11 is adapted to surround the periphery of the photovoltaic module 2 and is spaced apart from the periphery of the photovoltaic module 2. The photovoltaic module 2 includes a plurality of battery chips 22 sequentially spliced along a first direction. A plurality of limiting components 12 are spaced apart on the frame 11 located at both ends of the first direction and are spaced apart on the frame 11 perpendicular to the splicing direction. The limiting components 12 are adjustablely displaced on the frame 11 in the first direction, and one end of the limiting component 12 is adapted to abut against the sidewall of the battery chip 22 located at both ends of the first direction.
[0037] When using this photovoltaic module laminating fixture 1, the frame 11 is placed around the outer periphery of the photovoltaic module 2, and the inner sidewall of the frame 11 is spaced apart from the periphery of the photovoltaic module 2. One end of the limiting component 12 abuts against the sidewall of the battery chip 22 located at both ends in the first direction. The photovoltaic module 2 and the laminating fixture are placed together into the laminating chamber of the laminating machine, and the laminating chamber is evacuated to remove the gas inside the laminating chamber and the photovoltaic module 2. After heating, pressure lamination is performed. During the lamination process, the edge of the silicone plate of the laminator abuts against the upper part of the frame 11. The frame 11 can limit the downward deformation of the silicone plate, thereby preventing the edge of the silicone plate from excessively pressing the glass back plate 21 downward. This reduces the deformation of the edge of the glass back plate 21. After the photovoltaic module 2 is removed from the lamination chamber, the rebound stress of the glass back plate 21 can be reduced, preventing excessive rebound of the edge of the glass back plate 21 and the generation of air bubbles at the edge of the film layer 23. At the same time, the limiting component 12 abuts against the sides of the battery chip 22 along both sides of the splicing direction of the multiple battery chips 22. This prevents the battery chips 22 on both sides of the splice from moving to the sides during the lamination process, effectively preventing the splice from widening. It can also prevent the glass back plate 21 above the splice from deforming excessively, and prevent the generation of air bubbles at the splice due to the rebound of the glass back plate 21 after lamination. It can also prevent the battery chip 22 from moving too much and causing its edge to extend beyond the glass back plate 21 and / or the glass front plate 24. The photovoltaic module 2 does not require tape to limit its perimeter, and the frame 11 is spaced apart from the perimeter of the photovoltaic module 2, which facilitates the discharge of gas inside the photovoltaic module 2 and ensures a vacuum effect. During the lamination process, there is no need to reduce the lamination time and pressure, which can ensure the bonding strength between the glass layers of the photovoltaic module 2.
[0038] It should be noted that the battery chip 22 is itself an independent solar cell module that has been fully packaged, but its area is smaller than that of the photovoltaic module 2.
[0039] Optionally, in some embodiments, the limiting component 12 includes a connecting rod 121 and an elastic buffer 122; one end of the connecting rod 121 is movably and adjustably disposed on the frame 11, and the other end extends toward the inner side of the frame 11; the elastic buffer 122 is disposed at the end of the connecting rod 121 toward the inner side of the frame 11, and the elastic buffer 122 is adapted to abut against the sidewalls of the battery chips 22 located at both ends in the first direction. When the photovoltaic module laminating fixture 1 is in use, the elastic buffer 122 abuts against the sidewalls of the battery chips 22 at both ends in the first direction, and the connecting rod 121 and the elastic buffer 122 limit the battery chips 22, while avoiding hard contact with the battery chips 22 and thus preventing damage to the battery chips 22. One end of the connecting rod 121 is movably and adjustablely mounted on the frame 11. This configuration allows for adjustment of the size of the frame 11, enabling the laminating fixture to easily and quickly adapt to the splicing size error of the battery chip 22 caused by the cumulative laying error of the photovoltaic module 2. At the same time, it allows the laminating fixture to adapt to the encapsulation of photovoltaic modules 2 of different sizes.
[0040] Alternatively, in some embodiments, such as Figure 2 and Figure 10 As shown, the connecting rod 121 is cylindrical, with external threads on its outer peripheral wall and internal threads on the frame 11. The connecting rod 121 is threadedly connected to the frame 11. Rotating the connecting rod 121 allows for convenient and quick adjustment of the distance by which it extends inward from the frame 11, adapting to the splicing size errors of the battery chip 22 and enabling the lamination fixture to accommodate the encapsulation of photovoltaic modules 2 of different sizes. The threaded connection between the connecting rod 121 and the frame 11 ensures a reliable connection structure, guaranteeing the support of the connecting rod 121 and the elastic buffer 122 for the battery chip 22.
[0041] In some alternative embodiments, such as Figure 5 As shown, the elastic buffer 122 has multiple anti-slip protrusions 1221 on the side facing the inner side of the frame 11. The anti-slip protrusions 1221 can increase the friction between the elastic buffer 122 and the side of the battery chip 22, which can prevent the elastic buffer 122 from being misaligned. During the lamination process, it can ensure that the elastic buffer 122 always abuts against the battery chip 22, thereby effectively preventing the battery chip 22 from moving towards both sides of the seam.
[0042] In some embodiments, the elastic buffer 122 is made of silicone. The elastic buffer 122 is made of a soft material and is heat-resistant, which can prevent hard contact with the battery chip 22 and damage to the battery chip 22.
[0043] The connecting rod 121 is made of a material that is resistant to high temperatures. In some embodiments, the connecting rod 121 is made of a lightweight, high-temperature resistant metal such as aluminum alloy. Alternatively, the frame 11 is made of a lightweight, high-temperature resistant metal such as aluminum alloy.
[0044] Along the axial direction of the connecting rod 121, the elastic buffer 122 has a certain thickness. For example... Figures 2 to 4 As shown, along the axis perpendicular to the connecting rod 121, the cross-section of the elastic buffer 122 facing the connecting rod 121 is larger than the cross-section of the elastic buffer 122 facing the inner side of the frame 11. This arrangement can increase the overall strength of the elastic buffer 122, ensure the support effect of the elastic buffer 122 on the battery chip 22, and at the same time prevent the area of the elastic buffer 122 facing the inner side of the frame 11 from being too large and abutting against the glass back plate 21 and / or glass front plate 24 on the upper and lower sides of the battery chip 22.
[0045] Optionally, in some embodiments, the elastic buffer 122 is frustum-shaped.
[0046] In other embodiments, the elastic buffer 122 may also be in the form of a cube, cuboid, or cylinder.
[0047] In some embodiments, such as Figure 1 and Figure 6 As shown, the frame 11 is rectangular. The side of the frame 11 extending along the first direction is called its long side, and the side of the frame 11 perpendicular to the first direction is called its wide side. The length and / or width of the frame 11 are adjustable. When the size of the photovoltaic module 2 changes, the length and / or width of the frame 11 are adjusted so that the lamination fixture can be adapted to the encapsulation of photovoltaic modules 2 of different sizes, which can effectively improve the versatility of the lamination fixture.
[0048] Optionally, in some embodiments, the photovoltaic module laminating fixture 1 further includes a positioning element 13, and the frame 11 includes four support rails 111 connected end to end in sequence; the tail end of each support rail 111 is slidably disposed on another adjacent support rail 111, and after the support rail 111 slides into place, the positioning element 13 locks and positions the support rail 111. The adjacent support rails 111 are slidably connected, which can conveniently and quickly adjust the length and width of the frame 11; after the support rail 111 slides into place, the positioning element 13 locks and positions the support rail 111, which can prevent the support rail 111 from moving during the lamination process, and can ensure the supporting and limiting effect of the limiting component 12 on the battery chip 22; at the same time, it can also prevent the support rail 111 from sliding and misaligning during the conveying of the laminating fixture, thus affecting the fixture effect.
[0049] like Figures 7 to 10As shown, in some embodiments, the support rail 111 includes a support portion 1111 and a guide rail portion 1112. One end of the connecting rod 121 is disposed on the support portion 1111. The guide rail portion 1112 is disposed on the side of the support portion 1111 facing the inner side of the frame 11. The guide rail portion 1112 is provided with a sliding groove 11121. Each support portion 1111 has a pulley 14 at its tail end, and the pulley 14 is slidably disposed in the sliding groove 11121. The top of the pulley 14 and the guide rail portion 1112 does not exceed the bottom surface of the connecting rod 121. The support rail 111 achieves a sliding connection through the cooperation of the pulley 14 and the sliding groove 11121. The sliding structure is simple and reliable, and at the same time, it is convenient to quickly adjust the length and width dimensions of the frame 11. The top of the pulley 14 and the guide rail portion 1112 does not exceed the bottom surface of the connecting rod 121, which can avoid positional interference between the pulley 14 and the connecting rod 121 above when the pulley 14 moves, and can ensure smooth sliding of the pulley 14.
[0050] like Figure 9 and Figure 10 As shown, the support portion 1111 and the guide rail portion 1112 extend in the same direction. The height of the guide rail portion 1112 is lower than the height of the support portion 1111. The bottom surfaces of the support portion 1111 and the guide rail portion 1112 are flush. The slide groove 11121 is formed on the guide rail portion 1112 and extends along the length direction of the guide rail portion 1112.
[0051] like Figure 10 As shown, in some embodiments, the guide rails 1112 on both sides of the width direction of the slide groove 11121 are provided with a plurality of positioning slots 11122 arranged at intervals along the length direction of the slide groove 11121. The positioning member 13 includes a plurality of positioning blocks. After the support guide rail 111 slides into place, the positioning blocks are engaged in the positioning slots 11122 on both sides of the pulley 14. The positioning blocks restrict the movement of the pulley 14 from both sides, thereby keeping the support 1111 and the guide rail 1112 in a predetermined position. The positioning structure is simple and reliable.
[0052] In other embodiments, the positioning member 13 may also include a fastener, which fixes the pulley 14 to the guide rail 1112 after the support rail 111 slides into place.
[0053] In other embodiments, the support rail 111 may further include a support frame, with a guide rail extending horizontally along the length direction of the support frame in the height direction, and the end of the support rail 111 is provided with a plug-in portion that is plugged into the guide rail.
[0054] In other embodiments, the length and width of the border 11 can be adjusted by splicing support frames of different lengths together to form a rectangular border 11.
[0055] like Figure 4As shown, the photovoltaic module 2 includes four battery chips 22, which are arranged along a first direction. The long side of the frame 11 extends in the same direction as the first direction, and the wide side of the frame 11 extends perpendicular to the first direction. Optionally, in some embodiments, three sets of limiting components 12 are provided at intervals on each wide side of the frame 11.
[0056] In some embodiments, the height of the frame 11 needs to be slightly higher than the top surface of the photovoltaic module 2. The silicone plate of the laminator is pressed onto the top surface of the frame 11 and the photovoltaic module 2. The silicone plate inside the frame 11 deforms downward and presses down on the photovoltaic module 2.
[0057] In some embodiments, the height of the frame 11 is adjustable, which allows the lamination fixture to adapt to photovoltaic modules 2 of different thicknesses, thereby improving the versatility of the lamination fixture. Simultaneously, the adjustable height of the frame 11 allows the limiting component 12 to limit the position of battery chips 22 of different heights.
[0058] Optionally, in some embodiments, a silicone pad is provided on the bottom or top surface of the frame 11 to adjust the height of the frame 11.
[0059] In some embodiments, the connecting rod 121 is height-adjustable on the frame 11, so that the limiting component 12 can limit the battery chip 22 at different heights, thereby improving the versatility of the lamination tooling.
[0060] For example, multiple threaded holes are spaced apart in the height direction of the support 1111, and the connecting rod 121 is connected to the threaded holes at different heights to adjust the height of the limiting assembly 12.
[0061] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A photovoltaic module lamination tool, characterized by, include: A frame (11) is adapted to surround the periphery of the photovoltaic module (2) and to be spaced apart from the periphery of the photovoltaic module (2), wherein the photovoltaic module (2) includes a plurality of battery chips (22) sequentially spliced along a first direction; Multiple limiting components (12) are disposed on the frame (11) located at both ends of the first direction and are spaced apart on the frame (11) perpendicular to the splicing direction; the limiting components (12) are disposed on the frame (11) in a displacement adjustable manner in the first direction, and one end of the limiting component (12) is adapted to abut against the side wall of the battery chip (22) located at both ends of the first direction.
2. The photovoltaic module lamination tool of claim 1, wherein, The limiting component (12) includes a connecting rod (121) and an elastic buffer (122); one end of the connecting rod (121) is movably and adjustablely disposed on the frame (11), and the other end extends toward the inside of the frame (11); the elastic buffer (122) is disposed at the end of the connecting rod (121) toward the inside of the frame (11); the elastic buffer (122) is adapted to abut against the sidewall of the battery chip (22) located at both ends in the first direction.
3. The photovoltaic assembly lamination tool of claim 2, wherein, The connecting rod (121) is cylindrical, and the outer peripheral wall of the connecting rod (121) is provided with external threads, and the frame (11) is provided with internal threads. The connecting rod (121) is threadedly connected to the frame (11).
4. The photovoltaic module lamination fixture according to claim 2 or 3, characterized in that, The elastic buffer (122) has multiple anti-slip protrusions (1221) on the side facing the inside of the frame (11).
5. The photovoltaic module lamination fixture according to claim 2 or 3, characterized in that, Along the axis perpendicular to the connecting rod (121), the cross section of the elastic buffer (122) facing the connecting rod (121) is larger than the cross section of the elastic buffer (122) facing the inner side of the frame (11).
6. The photovoltaic module lamination fixture according to claim 2 or 3, characterized in that, The border (11) is rectangular, and the length and / or width of the border (11) are adjustable.
7. The photovoltaic module lamination fixture according to claim 6, characterized in that, It also includes a positioning element (13). The frame (11) includes four support rails (111) that are spliced together end to end. The tail end of each support rail (111) is slidably disposed on another support rail (111) adjacent to it. After the support rail (111) slides into place, the positioning element (13) locks and positions the support rail (111).
8. The photovoltaic module lamination fixture according to claim 7, characterized in that, The support rail (111) includes a support part (1111) and a rail part (1112). One end of the connecting rod (121) is disposed on the support part (1111). The rail part (1112) is disposed on the side of the support part (1111) facing the inside of the frame (11). The rail part (1112) is provided with a groove (11121). Each support part (1111) is provided with a pulley (14) at its tail end. The pulley (14) is slidably disposed in the groove (11121). The top of the pulley (14) and the rail part (1112) does not exceed the bottom surface of the connecting rod (121).
9. The photovoltaic module lamination fixture according to claim 8, characterized in that, The guide rails (1112) on both sides of the width direction of the slide groove (11121) are provided with a plurality of positioning slots (11122) arranged at intervals along the length direction of the slide groove (11121). The positioning member (13) includes a plurality of positioning blocks. After the support guide rail (111) slides into place, the positioning blocks are engaged in the positioning slots (11122) on both sides of the pulley (14).
10. The photovoltaic module lamination fixture according to claim 2 or 3, characterized in that, The height of the frame (11) is adjustable, and / or the height of the connecting rod (121) is adjustable on the frame (11).