Photovoltaic module frame

Abstract

The utility model relates to a kind of photovoltaic module frames, the photovoltaic module is quadrilateral structure, and the photovoltaic module includes laminated part and corrugated backboard adhered in the bottom of laminated part, the convex of corrugated backboard is arranged along the direction of one end of laminated part to another end, and the frame is arranged in the other two ends of laminated part, and the edge of the other two ends of laminated part is flush with the edge of corrugated backboard;Frame includes the clamping portion connected with laminated part, and the connecting portion connected with corrugated backboard;The clamping portion section is L type, and the horizontal section of clamping portion is in contact with the top surface of laminated part, and the vertical section of clamping portion is in contact with the side surface of laminated part, and the vertical section is connected with one end of connecting portion, and the side surface of connecting portion towards corrugated backboard is in contact with corrugated backboard, and the contact place is fixedly connected.The utility model effectively reduces the risk of photovoltaic module cell hidden crack after frame and corrugated backboard are connected.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, specifically a photovoltaic module frame. 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 increasing 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. Furthermore, the current frame and laminates are bonded with adhesive, requiring the design of an adhesive overflow channel in the frame to prevent adhesive from overflowing and contaminating the modules. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a photovoltaic module frame that effectively reduces the risk of microcracks in photovoltaic module cells after the frame is connected to the corrugated backsheet.

[0004] This utility model provides the following technical solution: a photovoltaic module frame, wherein the photovoltaic module has a quadrilateral structure, the photovoltaic module includes a laminate and a corrugated back plate bonded to the bottom 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 are flush with the edges of the 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 an L-shaped cross section, the horizontal section of the snap-fit ​​part abuts against the top surface of the laminate, the vertical section of the snap-fit ​​part abuts against the side of the laminate, the vertical section is connected to one end of the connecting part, and the side of the connecting part facing the corrugated back plate abuts against the corrugated back plate, and the abutment is fixedly connected.

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

[0006] Furthermore, one or more fixing plates are provided on the other end of the connecting part away from the corrugated back plate. The fixing plates are parallel to the laminate and connected to the mounting bracket by fasteners.

[0007] Furthermore, the positions of the fixing plates correspond to the protrusions of the corrugated back plate; or, the positions of the fixing plates correspond to the horizontal sections of the corrugated back plate.

[0008] Furthermore, a silicone strip is provided between the snap-fit ​​portion and the laminate.

[0009] 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 horizontal section of the snap-fit ​​part abuts against the top surface of the laminate, and the vertical section of the snap-fit ​​part abuts against the side of the laminate. The connection part is fixed by welding at the abutment of the corrugated back plate. Under the condition of ensuring the reinforcement effect of the corrugated back plate on the laminate, the risk of microcracks in the photovoltaic module cells is effectively reduced.

[0010] 2. The frame of this utility model is provided with a fixing plate, and the position of the fixing plate corresponds to the protrusion of the corrugated back plate; or, the position of the fixing plate corresponds to the horizontal section of the corrugated back plate, so as to ensure that after the fixing plate is connected to the mounting bracket, the entire photovoltaic module and the corrugated back plate are subjected to uniform force, further avoiding the situation of hidden cracks.

[0011] 3. This utility model uses silicone strips instead of structural adhesive. The silicone strips are clamped between the laminate and the frame, which not only avoids the phenomenon of adhesive overflow on the frame, but also eliminates the need to cure the adhesive on the frame, thus improving the production efficiency of photovoltaic modules. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the frame of this utility model.

[0013] Figure 2 for Figure 1 Schematic diagrams of the mid-section, where Figure (a) is a schematic diagram of section AA and Figure (b) is a schematic diagram of section BB.

[0014] Figure 3 This is a schematic diagram of the connection between the frame and the photovoltaic module in Example 1.

[0015] The components are: 1-corrugated back panel, 2-laminated component, 3-frame, 4-silicone strip, 5-snap-fit ​​part, 6-connecting part, 7-fixing plate. Detailed Implementation

[0016] 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.

[0017] This utility model provides a photovoltaic module frame, such as Figure 3 As shown, the photovoltaic module has a rectangular structure, including a laminate 2 and a corrugated back plate 1 bonded to the bottom (back) of the laminate 2. The corrugated back plate 1 includes spaced protrusions and horizontal sections. The protrusions of the corrugated back plate 1 are arranged along the direction from one end of the laminate 2 to the other end, and the frame 3 is provided at the other two ends of the laminate 2.

[0018] If the ends of the corrugated back panel 1 near the laminate 2 without the frame 3 are horizontal sections, then the ends of the laminate 2 without the frame 3 can be adapted to the existing frame.

[0019] 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 are flush with the edges of the corrugated back plate 1.

[0020] like Figure 2 As shown, the frame 3 includes a snap-fit ​​part 5 that connects to the laminate 2 and a connecting part 6 that connects to the corrugated back plate 1. Figure 2 As shown, the cross-section of the snap-fit ​​part 5 is L-shaped. The snap-fit ​​part 5 is divided into a horizontal section and a vertical section. The horizontal section of the snap-fit ​​part 5 abuts against the top surface (front) of the laminate 2, and the vertical section of the snap-fit ​​part 5 abuts against the side of the laminate 2. The vertical section is connected to one end of the connecting part 6. The side of the connecting part 6 facing the corrugated back plate 1 abuts against the end of the corrugated back plate 1. Here, the end of the corrugated back plate 1 refers to the two end faces of the corrugated back plate 1 along the line connecting the two side frames 3.

[0021] In some embodiments, a silicone strip 4 is provided between the snap-fit ​​part 5 and the laminate 2. Traditionally, the frame 3 and the laminate 2 of a photovoltaic module are bonded together using adhesive. The frame 3 requires an overflow groove to prevent adhesive from overflowing and contaminating the surface of the laminate 2, thus affecting the power generation efficiency and appearance of the laminate 2. This invention uses a silicone strip 4 instead of structural adhesive, securing the silicone strip 4 between the photovoltaic module and the frame 3. This not only avoids adhesive overflow from the frame 3 but also eliminates the need for curing the structural adhesive, improving the production efficiency of the photovoltaic module.

[0022] Both the frame 3 and the corrugated backplate 1 are made of stainless steel to ensure the photovoltaic module maintains a longer service life and strength in harsher environments. The snap-fit ​​part 5 and the connecting part 6 of the frame 3 are integrally formed, and in practice, they can be made by pressing stainless steel plates. The connecting part 6 and the corrugated backplate 1 are laser welded using 308 welding wire, which not only ensures the welding strength but also ensures that its corrosion resistance is not affected by the welding.

[0023] In this embodiment, the other edge of the connecting part 6 is flush with the bottom of the corrugated back plate 1 to ensure the tightness of the connection between the connecting part 6 and the corrugated back plate 1.

[0024] like Figure 1 , 3 As shown, one or more fixing plates 7 are provided on the other end of the connecting part 6 away from the corrugated back plate 1. The fixing plates 7 are parallel to the laminate 2 and are connected to the mounting bracket by fasteners.

[0025] In some embodiments, during installation, two photovoltaic modules are typically arranged side by side, with one end of the photovoltaic modules having a frame 3 adjacent to each other. The fixing plates 7 on the adjacent frame 3 can be staggered to ensure sufficient installation space.

[0026] In some embodiments, to ensure the stable connection between the frame 3 and the mounting bracket, the positions of the fixing plates 7 correspond to the protrusions of the corrugated back plate 1. The number of fixing plates 7 may not be the same as the number of protrusions; that is, not all positions corresponding to protrusions are equipped with fixing plates 7. Alternatively, the positions of the fixing plates 7 may correspond to the horizontal sections of the corrugated back plate 1. The number of fixing plates 7 may not be the same as the number of horizontal sections; that is, not all positions corresponding to horizontal sections are equipped with fixing plates 7. This ensures that after the fixing plates 7 are connected to the mounting bracket, the entire laminate 2 and the corrugated back plate 1 are subjected to uniform stress, further preventing microcracks.

[0027] The photovoltaic module frame provided by this utility model has a frame 3 that can be firmly connected to the corrugated back plate 1, which greatly improves the load-bearing strength and deformation resistance of the photovoltaic module, effectively reduces the risk of microcracks in the cells during operation, and has a fixing plate 7 that is easy to connect with the mounting bracket, making disassembly and assembly simple and quick.

[0028] 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 photovoltaic module frame, 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 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 are flush with the edges of the corrugated back plate. The frame includes a snap-fit ​​part that connects to the laminate and a connecting part that connects to the corrugated back plate. The snap-fit ​​part has an L-shaped cross section. The horizontal section of the snap-fit ​​part abuts against the top surface of the laminate, the vertical section of the snap-fit ​​part abuts against the side of the laminate, and the vertical section 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 abutment is fixedly connected.

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

3. The photovoltaic module frame according to claim 1, characterized in that: One or more fixing plates are provided on the other end of the connecting part away from the corrugated back plate. The fixing plates are parallel to the laminate and connected to the mounting bracket by fasteners.

4. The photovoltaic module frame according to claim 3, characterized in that: The positions of the fixing plates correspond to the protrusions of the corrugated back plate; or, the positions of the fixing plates correspond to the horizontal sections of the corrugated back plate.

5. The photovoltaic module frame according to any one of claims 1-4, characterized in that: A silicone strip is provided between the snap-fit ​​part and the laminate.

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