A frame and mounting structure for corrugated backsheet photovoltaic modules

Abstract

The utility model relates to a kind of frame and mounting structure for corrugated backboard photovoltaic module with, the photovoltaic module is quadrilateral structure, and photovoltaic module includes laminated member and is bonded in the corrugated backboard of laminated member bottom, the convex of corrugated backboard is arranged in the direction of laminated member one end to another end, the frame is set in the other two ends of laminated member, and the edge of other two ends of laminated member projects the edge of corrugated backboard certain distance;Frame includes clamping part and connecting part, the clamping part section is concave letter type, and laminated member projecting part is embedded in clamping part recess portion;Clamping part opening end is close to the side of corrugated backboard and is connected with the one end of connecting part, and the side of connecting part towards corrugated backboard is abutted with corrugated backboard, and the abutted place is fixed connection.The utility model frame is connected with corrugated backboard, and the risk of photovoltaic module cell piece hairline crack is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, specifically to a frame and mounting structure for photovoltaic modules with corrugated backsheets. 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 mounting structure for photovoltaic modules with corrugated backsheets. After the frame is connected to the corrugated backsheet, the risk of microcracks in the photovoltaic module cells is effectively reduced.

[0004] This utility model provides the following technical solution: a frame for a photovoltaic module with a corrugated backsheet, wherein the photovoltaic module has a quadrilateral structure, the photovoltaic module includes a laminate and a corrugated backsheet bonded to the bottom surface of the laminate, the protrusions of the corrugated backsheet 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 beyond the edge of the corrugated backsheet by a certain distance; the frame includes a snap-fit ​​part and a connecting part, the snap-fit ​​part has a U-shaped cross section, 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 is connected to one end of the connecting part near the corrugated backsheet, the side of the connecting part facing the corrugated backsheet abuts against the corrugated backsheet, and the abutting part is fixedly connected.

[0005] Furthermore, the other end edge of the connecting portion is flush with the bottom edge of the corrugated back plate.

[0006] Furthermore, the other end of the connecting part is provided with a hook-shaped structure on the side opposite to the corrugated back plate, and the hook-shaped structure is used to connect with the mounting bracket.

[0007] Furthermore, the hook-shaped structure includes an extension and an upper hook. The extension is parallel to the laminate, one end of the extension is connected to the other end of the connecting part, and the other end of the extension is connected to the upper hook. The upper hook and the extension have a certain angle.

[0008] Furthermore, the upper hook portion is perpendicular to the extension portion.

[0009] Furthermore, the frame is made of stainless steel.

[0010] An installation structure for photovoltaic modules with corrugated backsheets is disclosed. The installation structure includes a frame as described above and an aircraft-shaped corner bracket. Two photovoltaic modules are arranged side by side as a group, with the ends of the photovoltaic modules having the frame adjacent to each other. The aircraft-shaped corner bracket includes a central mounting plate and mounting grooves located at both ends of the mounting plate. The mounting grooves open downwards and press the upper hooks of two adjacent frames into their respective grooves. The central mounting plate of the aircraft-shaped corner bracket is connected to a mounting bracket by fasteners.

[0011] Furthermore, the open end of the mounting groove is located on the same plane as the mounting plate, and the distance between the open end and the closed end of the mounting groove is the same as the height of the upper hook.

[0012] Furthermore, the width of the mounting groove is 5-10 times the thickness of the upper hook.

[0013] 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 and a connecting part connected to the corrugated back plate. The snap-fit ​​part has a U-shaped cross section. The protruding part of the laminate is embedded in the concave part of the snap-fit ​​part. The connecting part is welded and fixed to the side of the corrugated back plate where it abuts against the corrugated back plate. Under the condition that the corrugated back plate strengthens the laminate, the risk of microcracks in the photovoltaic module cells is effectively reduced.

[0014] 2. The other edge of the connecting part of this utility model is flush with the bottom edge of the corrugated back panel to ensure the tightness of the connection between the frame and the corrugated back panel.

[0015] 3. The other end of the connecting part of this utility model is provided with a hook-shaped structure facing away from the corrugated back plate. The hook-shaped structure is used to connect with the mounting bracket. The frame can not only be firmly connected to the laminate and welded to the corrugated back plate, but also ensure easy connection with the mounting bracket, making installation simple and convenient.

[0016] 4. The frame and corrugated back panel of this utility model are both made of stainless steel. Compared with aluminum frames, which have lower strength and rigidity, stainless steel frames can effectively improve the strength and deformation resistance of the components. In addition, the excellent corrosion resistance of stainless steel can adapt to more severe working environments. 5. In this utility model, the open end of the mounting groove and the mounting plate are located on the same plane, and the distance between the open end and the closed end of the mounting groove is the same as the height of the upper hook. When the aircraft-type corner bracket presses two adjacent upper hooks onto the mounting bracket, the extension of the hook-shaped structure and the mounting plate of the aircraft-type corner bracket are located in the same plane, ensuring the certainty of the mounting structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the frame and photovoltaic module of this utility model.

[0018] Figure 2 Figure (a) is a schematic diagram of the frame of this utility model, and Figure (b) is a schematic diagram of the structure and a schematic diagram of the process.

[0019] Figure 3 This is a schematic diagram showing the connection between the frame and the photovoltaic module of this utility model.

[0020] Figure 4 This is a schematic diagram showing the connection between the frame and the mounting bracket of this utility model.

[0021] Among them: 1-corrugated back panel, 2-laminated component, 3-frame, 4-silicone strip, 5-snap-fit ​​part, 6-connecting part, 7-hook structure, 8-aircraft-shaped corner bracket. Detailed Implementation

[0022] 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.

[0023] This utility model provides a frame for photovoltaic modules with corrugated backsheets, such as... Figure 1 As shown, the photovoltaic module has a rectangular structure, including a laminate 2 and a corrugated backplate 1 bonded to the bottom (back) of the laminate 2. The corrugated backplate 1 includes spaced-apart protrusions and horizontal sections. The protrusions of the corrugated backplate 1 are arranged along the direction from one end of the laminate 2 to the opposite end. Frames 3 are provided at the other two ends of the laminate 2. The ends of the corrugated backplate 1 near the laminate 2 without frames 3 can be horizontal sections, allowing existing frames to be fitted to the ends of the laminate 2 without frames 3.

[0024] 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.

[0025] like Figure 2 As shown, the frame 3 includes a snap-fit ​​part 5 connected to the laminate 2 and a connecting part 6 connected to the corrugated back plate 1. The snap-fit ​​part 5 has a U-shaped cross-section, with the U-shaped opening facing the protruding part of the laminate 2. The protruding part refers to the part of the laminate 2 that extends beyond the edge of the corrugated back plate 1 at both ends where the frame 3 is located.

[0026] Specifically, the snap-fit ​​part consists of an upper snap-fit ​​plate, a lower snap-fit ​​plate, and a vertical plate. The upper snap-fit ​​plate and the lower snap-fit ​​plate are parallel to the laminate 2, and the vertical plate is perpendicularly connected to the upper snap-fit ​​plate and the lower snap-fit ​​plate. The area enclosed by the upper snap-fit ​​plate, the lower snap-fit ​​plate, and the vertical plate is the recess of the snap-fit ​​part 5.

[0027] The protruding part of the laminate 2 is embedded in the recess of the snap-fit ​​part 5. The snap-fit ​​part 5 and the laminate 2 are sealed with sealant or a silicone strip is provided. The side of the snap-fit ​​part 5 near the corrugated back plate 1 (the end of the opening of the lower snap-fit ​​plate) is connected to one end of the connecting part 6. The connecting part 6 has a planar structure. The side of the connecting part 6 facing the corrugated back plate 1 abuts against the end of the corrugated back plate 1. The abutment between the connecting part 6 and the corrugated back plate 1 is fixed by welding.

[0028] In this embodiment, the depth of the snap-fit ​​portion 5 (the depth refers to the distance between the open end and the closed end of the snap-fit ​​portion 5) is equal to the extension length of the protruding portion of the laminate 2 (the extension length refers to the length of the protruding portion along the line connecting the two frame edges 3), ensuring that after the protruding portion of the laminate 2 is embedded into the recess of the snap-fit ​​portion 5, the side of the connecting portion 6 can abut against the corrugated back plate 1. The abutment is laser-welded using 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.

[0029] To ensure a tight connection between the frame 3 and the corrugated back panel 1, the other edge of the frame 3 connecting part 6 is flush with the bottom edge of the corrugated back panel 1.

[0030] like Figure 2 As shown in (a), a hook-shaped structure 7 is provided on the other end of the connecting part 6 away from the corrugated back plate 1. The hook-shaped structure 7 is used to connect with the mounting bracket. In this embodiment, the hook-shaped structure 7 includes an extension and an upper hook. The extension is parallel to the laminate 2. One end of the extension is connected to the connecting part 6, and the other end of the extension is connected to the upper hook. The upper hook and the extension have a certain angle. Preferably, the upper hook is perpendicular to the extension.

[0031] Both the frame 3 and the corrugated backplate 1 are made of stainless steel to ensure that the photovoltaic modules maintain a longer service life and strength in more demanding environments.

[0032] Existing photovoltaic module frames are mainly made of aluminum, which has low strength and rigidity. Using stainless steel frames can effectively improve the strength and deformation resistance of photovoltaic modules. In addition, the excellent corrosion resistance of stainless steel can adapt to more severe working environments.

[0033] like Figure 2 As shown in (b), the snap-fit ​​part 5 and the connecting part 6 (including the hook structure 7) of the frame 3 are integrally formed. In specific implementation, they can be made by pressing stainless steel plate.

[0034] This utility model also provides an installation structure for photovoltaic modules with corrugated backsheets, including the aforementioned frame 3 with hook-shaped structures 7 and aircraft-shaped corner brackets 8. Two photovoltaic modules are arranged side by side as a group, with the ends of the photovoltaic modules having the frame 3 adjacent to each other, and the two hook-shaped structures 7 are pressed onto the mounting bracket by an aircraft-shaped corner bracket 8.

[0035] The aircraft-type corner bracket 8 includes a central mounting plate and mounting slots located at both ends of the mounting plate. The open end of the mounting slot is on the same plane as the mounting plate. The distance between the open end and the closed end of the mounting slot is the same as the height of the upper hook. The height of the upper hook refers to the length along the direction perpendicular to the extension.

[0036] Specifically, the mounting slots at both ends of the aircraft-type corner bracket 8 face downwards, pressing two adjacent upper hooks into them respectively. The mounting plate in the middle of the aircraft-type corner bracket 8 is connected to the mounting bracket by fasteners. At this time, the extension of the hook-shaped structure 7 and the mounting plate of the aircraft-type corner bracket 8 are located in the same plane, ensuring the certainty of the mounting structure. The fasteners can be bolts, and in some embodiments, ST5.5*15 stainless steel hexagonal head self-drilling screws are used.

[0037] In specific implementation, if the photovoltaic module is rectangular, in order to facilitate installation and make the frame 3 more resistant to deformation after being connected to the photovoltaic module, the frame 3 is set on the long side of the photovoltaic module, that is, the protrusion of the corrugated back plate 1 extends along the width direction of the laminate 2 and is arranged along the length direction of the laminate 2.

[0038] For ease of installation, the width of the mounting slot for the aircraft-type corner bracket 8 is 5-10 times the thickness of the upper hook. The width of the mounting slot refers to the length of the opening end of the mounting slot along the line connecting the two photovoltaic modules, and the thickness of the upper hook refers to the length of the upper hook along the line connecting the two photovoltaic modules. For ease of installation, the photovoltaic modules can be adjusted along the line connecting the two photovoltaic modules.

[0039] The frame for photovoltaic modules with corrugated backsheets provided by this utility model can be firmly connected to the corrugated backsheet 1, significantly improving the load-bearing strength and deformation resistance of the photovoltaic module, and effectively reducing the risk of microcracks in the solar cells during operation. The mounting structure for photovoltaic modules with corrugated backsheets provided by this utility model can install the photovoltaic module with the corrugated backsheet 1 onto the mounting bracket, which is convenient and highly stable.

[0040] 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 with corrugated backsheets, 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 and a connecting part. The snap-fit ​​part has a U-shaped cross section, and the extended part of the laminate is embedded in the recess of the snap-fit ​​part. The side of the snap-fit ​​part near the corrugated back plate is connected to one end of the connecting part. The side of the connecting part facing the corrugated back plate abuts against the corrugated back plate, and the abutting part is fixedly connected.

2. The frame for a photovoltaic module with a corrugated backsheet according to claim 1, characterized in that: The other end edge of the connecting part is flush with the bottom edge of the corrugated back plate.

3. The frame for a photovoltaic module with a corrugated backsheet according to claim 1, characterized in that: The other end of the connecting part is provided with a hook-shaped structure on the side opposite to the corrugated back plate, and the hook-shaped structure is used to connect with the mounting bracket.

4. The frame for a photovoltaic module with a corrugated backsheet according to claim 3, characterized in that: The hook-shaped structure includes an extension and an upper hook. The extension is parallel to the laminate. One end of the extension is connected to the other end of the connecting part, and the other end of the extension is connected to the upper hook. The upper hook and the extension have a certain angle.

5. The frame for a photovoltaic module with a corrugated backsheet according to claim 4, characterized in that: The upper hook is perpendicular to the extension.

6. The frame for a photovoltaic module with a corrugated backsheet according to any one of claims 1-5, characterized in that: The frame is made of stainless steel.

7. A mounting structure for photovoltaic modules with corrugated backsheets, said mounting structure comprising a frame as described in any one of claims 4-5, characterized in that, The installation structure also includes an aircraft-type corner bracket; two photovoltaic modules are arranged side by side as a group, and the ends of the photovoltaic modules with frames are adjacent; The aircraft-type corner bracket includes a central mounting plate and mounting slots at both ends of the mounting plate. The mounting slots open downwards and press the upper hooks of the two adjacent frames into them respectively. The central mounting plate of the aircraft-type corner bracket is connected to the mounting bracket by fasteners.

8. The mounting structure for photovoltaic modules with corrugated backsheets as described in claim 7, characterized in that, The open end of the mounting groove is on the same plane as the mounting plate, and the distance between the open end and the closed end of the mounting groove is the same as the height of the upper hook.

9. The mounting structure for photovoltaic modules with corrugated backsheets as described in claim 7 or 8, characterized in that, The width of the mounting groove is 5-10 times the thickness of the upper hook.

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