A frame and fixing structure for a photovoltaic module

Abstract

This utility model relates to a frame and fixing structure for a photovoltaic module. The photovoltaic module has a quadrilateral structure and includes a laminate and a corrugated backplate bonded to the bottom surface of the laminate. The protrusions of the corrugated backplate are arranged along the direction from one end of the laminate to the other end. The frame is located at the other two ends of the laminate, and the edges of the other two ends of the laminate extend a certain distance beyond the edges of the corrugated backplate. The frame includes a snap-fit ​​part, a vertical part, and a horizontal part. The snap-fit ​​part has a U-shaped cross-section, and the protruding part of the laminate is embedded in the concave part of the snap-fit ​​part. The open end of the snap-fit ​​part, near the corrugated backplate, is connected to one end of the vertical part, and the other end of the vertical part, facing the corrugated backplate, is perpendicularly connected to the horizontal part. The side of the vertical part facing the corrugated backplate and the top surface of the horizontal part facing the corrugated backplate both abut against the corrugated backplate, and the abutment points are fixedly connected. After the frame and corrugated backplate are connected, this utility model effectively reduces the risk of microcracks in the photovoltaic module cells.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, specifically to a frame and fixing structure for photovoltaic modules. Background Technology

[0002] Currently, in high wind pressure areas, double-glass modules with aluminum reinforcing ribs are mainly used to improve the load-bearing capacity of the modules. However, the deformation of the modules in this solution changes significantly with the increase of load. Therefore, corrugated back panels are bonded to the bottom of the laminates to resist deflection deformation under high wind pressure. However, the existing frame cannot be well connected to the corrugated back panel, which increases the risk of microcracks in the laminates. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a frame and fixing structure for photovoltaic modules. After the frame is connected to the corrugated backplate, it effectively reduces the risk of microcracks in the photovoltaic module cells.

[0004] This utility model provides the following technical solution: a frame for a photovoltaic module, wherein the photovoltaic module has a quadrilateral structure, the photovoltaic module includes a laminate and a corrugated back plate bonded to the bottom surface of the laminate, the protrusions of the corrugated back plate are arranged along the direction from one end of the laminate to the other end, the frame is disposed at the other two ends of the laminate, the edges of the other two ends of the laminate extend a certain distance beyond the edge of the corrugated back plate; the frame includes a snap-fit ​​part, a vertical part and a horizontal part, the snap-fit ​​part has a U-shaped cross section, the protruding part of the laminate is embedded in the snap-fit ​​part recess, the opening end of the snap-fit ​​part near the corrugated back plate is connected to one end of the vertical part, the other end of the vertical part facing the corrugated back plate is perpendicularly connected to the horizontal part; the side of the vertical part facing the corrugated back plate and the top surface of the horizontal part facing the corrugated back plate both abut against the corrugated back plate, and the abutment points are fixedly connected.

[0005] Furthermore, the length of the horizontal portion along the line connecting the two side borders is not less than the distance from the open end to the closed end of the snap-fit ​​portion.

[0006] Furthermore, the vertical part is provided with one or more mounting holes for connecting with the mounting bracket; the positions of the mounting holes correspond to the horizontal sections of the corrugated back plate; or, the positions of the mounting holes correspond to the protrusions of the corrugated back plate.

[0007] A fixing structure for photovoltaic modules includes the frame described above, characterized in that: the fixing structure further includes L-shaped corner brackets and fasteners; two photovoltaic modules are arranged side by side as a group, and the ends of the photovoltaic modules with the frame are adjacent; one or more mounting holes of the photovoltaic modules are connected to the corresponding L-shaped corner brackets through fasteners, the L-shaped corner brackets are fixed on the mounting brackets, and the mounting holes of the two photovoltaic modules connected to the L-shaped corner brackets are staggered.

[0008] Furthermore, the L-shaped corner bracket is divided into a vertically connected vertical plate and a horizontal plate. The vertical plate has through holes and mounting holes connected by fasteners; the horizontal plate is fixed on the mounting bracket, and the horizontal plate and the horizontal part are located on the same horizontal plane.

[0009] A fixing structure for photovoltaic modules includes the frame described above, and the fixing structure further includes a U-shaped corner bracket and fasteners; two photovoltaic modules are arranged side by side as a group, and the ends of the photovoltaic modules with the frame are adjacent; the two side walls of the U-shaped corner bracket are provided with through holes, and the through holes correspond to the mounting holes of the two photovoltaic modules respectively, and the through holes are connected to the mounting holes by fasteners; the closed end of the U-shaped corner bracket is fixed on the mounting bracket.

[0010] Furthermore, the closed end of the concave-shaped corner code is located on the same horizontal plane as the horizontal part.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the frame can be connected to a laminate with a corrugated back plate. The frame includes a snap-fit ​​part connected to the laminate, a vertical part welded to the corrugated back plate, and a horizontal part. While ensuring the reinforcing effect of the corrugated back plate on the laminate, the risk of microcracks in the photovoltaic module cells is effectively reduced.

[0012] 2. The length of the horizontal part of this utility model along the line connecting the two side frames is not less than the distance from the open end to the closed end of the snap-fit ​​part, ensuring the tightness of the connection between the horizontal part and the corrugated back panel, as well as the stability of the side frame installation.

[0013] 3. The vertical part of this utility model is provided with mounting holes, which not only allows the frame to be firmly connected to the laminate and welded to the corrugated back plate, but also ensures easy connection to the mounting bracket, making installation simple and convenient.

[0014] 4. The fixing structure provided by this utility model can be easily and conveniently installed on the mounting bracket using L-shaped or U-shaped corner brackets. Furthermore, L-shaped or U-shaped corner brackets can be selected according to different installation conditions, making it highly adaptable. Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of the frame and photovoltaic module of this utility model.

[0015] Figure 2 This is a schematic diagram of the border in Example 1.

[0016] Figure 3 This is a schematic diagram showing the connection of the frame, photovoltaic module, and L-shaped corner bracket in Example 2.

[0017] Figure 4 This is a schematic diagram showing the connection of the frame, photovoltaic module, and concave corner bracket in Example 3.

[0018] Among them: 1-corrugated back panel, 2-laminated component, 3-frame, 4-silicone strip, 5-snap-fit ​​part, 6-vertical part, 7-mounting hole, 8-horizontal part, 9-L-shaped corner bracket, 10-U-shaped corner bracket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example 1 This embodiment provides a frame for photovoltaic modules, such as... Figure 1 As shown, the photovoltaic module has a rectangular structure, including a laminate 2 and a corrugated back sheet 1 bonded to the bottom (back) of the laminate 2. The corrugated back sheet 1 includes spaced protrusions and horizontal sections. The protrusions of the corrugated back sheet 1 are arranged along the direction from one end of the laminate 2 to the opposite end. The frame 3 is provided at the other two ends of the laminate 2.

[0021] The ends of the corrugated back panel 1 near the laminate 2 without the frame 3 can be horizontal sections, so the ends of the laminate 2 without the frame 3 can be adapted to the existing frame. In specific implementation, if the photovoltaic module is rectangular, in order to facilitate the installation of the photovoltaic module on the mounting bracket, the frame 3 is set on the long side of the photovoltaic module, that is, the protrusion of the corrugated back panel 1 extends along the width direction of the laminate 2 and is arranged along the length direction of the laminate 2.

[0022] like Figure 3 As shown, the laminate 2 has two ends of the frame 3 (the other two ends of the laminate 2), and its edges extend a certain distance beyond the edge of the corrugated back plate 1.

[0023] like Figure 2 As shown, the frame 3 includes a snap-fit ​​portion 5 connected to the laminate 2, a vertical portion 6 connected to the corrugated back plate 1, and a horizontal portion 8. Both the vertical portion 6 and the horizontal portion 8 are plate-shaped structures. The snap-fit ​​portion 5 has a U-shaped cross-section. The protruding part of the laminate 2 is embedded in the recess of the snap-fit ​​portion 5. The open end of the snap-fit ​​portion 5 is connected to one end of the vertical portion 6 on the side near the corrugated back plate 1, and the other end of the vertical portion 6 is perpendicularly connected to the horizontal portion 8 on the side facing the corrugated back plate 1.

[0024] The vertical part 6 abuts against the side of the corrugated back plate 1 and the horizontal part 8 abuts against the top surface of the corrugated back plate 1, and the abutment is fixed by welding. Specifically, the side of the vertical part 6 abuts against the two ends of the corrugated back plate 1 along the direction perpendicular to the vertical part 6; the top surface of the horizontal part 8 abuts against the bottom surface of the corrugated back plate 1.

[0025] In this embodiment, the depth of the snap-fit ​​part 5 (the depth refers to the distance between the open end and the closed end of the snap-fit ​​part 5) is equal to the length of the protruding part of the laminate 2 (the length refers to the length of the protruding part along the line connecting the two side frames 3), ensuring that after the protruding part of the laminate 2 is embedded in the recess of the snap-fit ​​part 5, the side of the vertical part 6 can abut against the corrugated back plate 1.

[0026] Both the frame 3 and the corrugated backplate 1 are made of stainless steel to ensure that the photovoltaic module maintains a longer service life and strength in harsher environments. The frame 3's snap-fit ​​part 5, vertical part 6, and horizontal part 8 are integrally formed; in practice, they can be made by pressing stainless steel sheets.

[0027] The snap-fit ​​part 5 is sealed with sealant or silicone strip 4 between itself and the laminate 2. The vertical part 6, the horizontal part 8 and the corrugated back plate 1 are laser welded with 308 welding wire to ensure a solid weld, which not only guarantees the welding strength, but also ensures that its corrosion resistance is not affected by the welding.

[0028] To ensure the tightness of the connection between the horizontal part 8 and the corrugated back plate 1, and to ensure the stability of the frame 3 installation, the length of the horizontal part 8 along the line connecting the two frame 3 shall not be less than the distance from the open end to the closed end of the snap-fit ​​part 5.

[0029] like Figure 2 As shown, the vertical part 6 has one or more mounting holes 7 for connecting to the mounting bracket. The mounting holes 7 are located on the same straight line. Preferably, the positions of the mounting holes 7 correspond to the horizontal sections of the corrugated back plate 1; or, the positions of the mounting holes 7 correspond to the protrusions of the corrugated back plate 1; this ensures that after connecting to the mounting bracket, the laminate 2 and the corrugated back plate 1 are subjected to uniform stress, further avoiding the occurrence of hidden cracks.

[0030] Example 2 This embodiment provides a fixing structure for photovoltaic modules, such as... Figure 3 As shown, the fixing structure includes the aforementioned frame 3, L-shaped corner bracket 9, and fasteners.

[0031] Two photovoltaic modules are arranged side by side as a group, with the ends of the photovoltaic modules having a frame 3 adjacent to each other. The vertical part 6 of each photovoltaic module is connected to the mounting bracket through an L-shaped corner bracket 9.

[0032] The L-shaped corner bracket 9 consists of a vertically connected vertical plate and a horizontal plate. The vertical plate has through holes and mounting holes 7 connected by fasteners. In some embodiments, the fasteners are stainless steel flat-head rivets. The horizontal plate is fixed to the mounting bracket, and the horizontal plate and the horizontal part 8 are located on the same horizontal plane. In some embodiments, the horizontal plate is fixed to the mounting bracket by stainless steel hexagonal self-tapping screws.

[0033] The mounting holes 7 connecting two adjacent photovoltaic modules to the L-shaped corner brackets 9 are staggered to ensure that each L-shaped corner bracket 9 has sufficient space to connect with the mounting bracket.

[0034] Example 3 This embodiment provides a fixing structure for photovoltaic modules, such as... Figure 4 As shown, the fixing structure includes the aforementioned frame 3, concave corner bracket 10, and fasteners.

[0035] Two photovoltaic modules are arranged side-by-side as a group, with their frames 3 adjacent at one end. The vertical portions 6 of the two photovoltaic modules are connected to the mounting bracket via a single U-shaped bracket 10. The U-shaped bracket 10 has through holes on both sides, corresponding to the mounting holes 7 of the two photovoltaic modules, and these holes are connected to the mounting holes 7 by fasteners. The closed end of the U-shaped bracket 10 is fixed to the mounting bracket. The closed end of the U-shaped bracket 10 is on the same horizontal plane as the horizontal portion 8, ensuring the stability of the entire mounting structure.

[0036] In this embodiment, the U-shaped corner bracket 10 includes a mounting plate in the middle and connecting plates at both ends of the mounting plate. The connecting plates are perpendicular to the mounting plate and parallel to the vertical part 6. The connecting plates have through holes corresponding to the mounting holes 7. The through holes are connected to the mounting holes 7 corresponding to the positions of the two photovoltaic modules by fasteners. In some embodiments, the fasteners are stainless steel flat round head rivets. The mounting plate is fixed to the mounting bracket by stainless steel hexagonal head self-tapping screws. The mounting plate and the horizontal part 8 are on the same horizontal plane to ensure the stability of the fixing structure.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A frame for photovoltaic modules, characterized in that: The photovoltaic module has a quadrilateral structure. The photovoltaic module includes a laminate and a corrugated back plate bonded to the bottom surface of the laminate. The protrusions of the corrugated back plate are arranged along the direction from one end of the laminate to the other end. The frame is set at the other two ends of the laminate, and the edges of the other two ends of the laminate extend a certain distance beyond the edge of the corrugated back plate. The frame includes a snap-fit ​​part, a vertical part, and a horizontal part. The snap-fit ​​part has a U-shaped cross section. The extended part of the laminate is embedded in the recess of the snap-fit ​​part. The side of the snap-fit ​​part with its opening end near the corrugated back plate is connected to one end of the vertical part. The other end of the vertical part is perpendicularly connected to the side of the horizontal part facing the corrugated back plate. The vertical part facing the side of the corrugated back panel and the horizontal part facing the top of the corrugated back panel both abut against the corrugated back panel, and the abutment points are fixedly connected.

2. The frame for photovoltaic modules according to claim 1, characterized in that: The length of the horizontal part along the line connecting the two side frames is not less than the distance from the open end to the closed end of the snap-fit ​​part.

3. The frame for photovoltaic modules according to claim 1 or 2, characterized in that: The vertical part is provided with one or more mounting holes for connecting to a mounting bracket. The mounting holes are located in positions corresponding to the horizontal sections of the corrugated back panel; or, the mounting holes are located in positions corresponding to the protrusions of the corrugated back panel.

4. A fixing structure for photovoltaic modules, comprising the frame as described in claim 3, characterized in that: The fixing structure also includes L-shaped corner brackets and fasteners; the two photovoltaic modules are arranged side by side as a group, and the ends of the photovoltaic modules with frames are adjacent; One or more mounting holes of a photovoltaic module are connected to corresponding L-shaped corner brackets via fasteners. The L-shaped corner brackets are fixed on the mounting brackets, and the mounting holes of two photovoltaic modules connected to the L-shaped corner brackets are staggered.

5. The fixing structure for photovoltaic modules according to claim 4, characterized in that: L-shaped corner brackets consist of vertically connected vertical plates and horizontal plates. The vertical plates have through holes and mounting holes that are connected by fasteners. The horizontal plates are fixed on the mounting brackets, and the horizontal plates and the horizontal part are located on the same horizontal plane.

6. A fixing structure for photovoltaic modules, comprising the frame as described in claim 3, characterized in that: The fixing structure also includes U-shaped corner brackets and fasteners; the two photovoltaic modules are arranged side by side as a group, and the ends of the photovoltaic modules with frames are adjacent; The U-shaped corner bracket has through holes on both sides, which correspond to the mounting holes of the two photovoltaic modules respectively. The through holes and the mounting holes are connected by fasteners. The closed end of the U-shaped corner bracket is fixed on the mounting bracket.

7. The fixing structure for photovoltaic modules according to claim 6, characterized in that: The closed end of the concave-shaped corner code is on the same horizontal plane as the horizontal part.

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