Frame strips and frames for photovoltaic modules

Abstract

This utility model discloses a frame strip and frame for photovoltaic modules, including a first sidewall, a second sidewall, a third sidewall, a fourth sidewall, a fifth sidewall, and a sixth sidewall connected by sequential bending. The first, second, and third sidewalls enclose a first mounting cavity, and the fourth, fifth, and sixth sidewalls enclose a second mounting cavity. The fourth sidewall fits against the third sidewall, and a teardrop-shaped support beam is formed on the fourth sidewall. A groove is formed between the teardrop-shaped support beam and the fifth sidewall. The teardrop-shaped support beam provides strong deformability and increases the support force on the first mounting cavity. The corner bracket installation and positioning are more convenient and precise, improving the stability of corner bracket assembly, increasing assembly efficiency, reducing the gap between the long and short frame strips, and preventing displacement under wind load vibration, thus ensuring the overall structural airtightness. The raised reinforcing ribs prevent stress concentration and also provide a certain limiting effect for corner bracket installation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a frame strip and frame for photovoltaic modules. Background Technology

[0002] Photovoltaic frames are an essential component of solar photovoltaic modules and hold an irreplaceable position in the photovoltaic industry. The main function of the photovoltaic frame is to encapsulate the photovoltaic panel, providing stable support and ensuring its normal operation in various environments.

[0003] Currently, most photovoltaic (PV) frame strips are manufactured using a one-piece extrusion molding process, with the long and short sides then spliced ​​together to form the frame. While many PV frame structures exist, new problems arise during practical use. For example, existing corner brackets are not tightly joined, exhibiting poor stability and prone to loosening over time. The gap between the long and short frame strips can reach 0.5-1mm, making them susceptible to displacement under wind load vibration, affecting module sealing. Furthermore, the support for the PV panel is insufficient; the bottom surface of the PV panel mounting groove uses a flat and thin design (generally ≤1.2mm thick), making the frame prone to collapse and deformation under long-term loads, leading to stress concentration in the PV panel. The bottom surface of the frame strips is often a flat structure, which can easily cause twisting and deformation in steel frame modules longer than 2m, further affecting module installation. Therefore, the structure of PV frame strips and frames needs continuous improvement and innovation to solve these emerging problems. Utility Model Content

[0004] The purpose of this utility model is to disclose a frame strip and frame for photovoltaic modules. Firstly, a teardrop-shaped support beam is formed on the fourth sidewall. On one hand, the fourth sidewall provides stable support to the third sidewall, enhancing the frontal load-bearing capacity and structural stability. The teardrop-shaped support beam has high deformability and forms a mechanical coupling with the third sidewall, increasing the support force on the first mounting cavity. On the other hand, a groove is formed between the teardrop-shaped support beam and the fifth sidewall for fixing corner brackets. This makes corner bracket installation and positioning more convenient and precise, improving the stability of corner bracket assembly, increasing assembly efficiency, and reducing the gap between the long and short frame strips. 1. The structure is not prone to displacement under wind load vibration, ensuring the overall airtightness of the structure. 2. The sixth sidewall is equipped with raised reinforcing ribs, which can transfer local stress to the entire cross-section, avoid stress concentration, significantly improve the vertical bearing strength of the sixth sidewall, enhance the horizontal bending and compressive resistance, and also play a certain limiting role for the corner bracket installation. 3. The third sidewall is arranged in an upward inclination. On the one hand, it forms a dovetail angle between the first and third sidewalls, which can effectively prevent glue overflow. On the other hand, the third sidewall is not prone to tilting, collapsing and becoming unbalanced after being compressed. Moreover, it has a large contact area with the photovoltaic panel after being compressed, resulting in good balance and improved load-bearing capacity.

[0005] To achieve the above objectives, this utility model provides a frame strip for photovoltaic modules, comprising a first sidewall, a second sidewall, a third sidewall, a fourth sidewall, a fifth sidewall, and a sixth sidewall that are bent and connected in sequence; the first sidewall, the second sidewall, and the third sidewall enclose a first mounting cavity, the fourth sidewall, the fifth sidewall, and the sixth sidewall enclose a second mounting cavity, the fourth sidewall is attached to the third sidewall, a teardrop-shaped support beam is formed on the fourth sidewall, and a groove is formed between the teardrop-shaped support beam and the fifth sidewall.

[0006] In some embodiments, the third sidewall is arranged at an upward angle.

[0007] In some embodiments, the third sidewall is tilted upward at an angle of 1.5 degrees.

[0008] In some embodiments, the sixth sidewall is provided with a raised reinforcing rib, which is arranged near the free end of the sixth sidewall.

[0009] In some embodiments, the raised reinforcing ribs resemble an Ω shape.

[0010] In some embodiments, the free end of the first sidewall is bent inward to close the opening.

[0011] In some embodiments, the fifth sidewall is provided with a plurality of anchor bolts.

[0012] In some embodiments, the sixth sidewall is provided with a plurality of anchor holes.

[0013] To achieve the above objectives, this utility model also provides a frame for photovoltaic modules, which is formed by splicing together the aforementioned frame strips for photovoltaic modules.

[0014] In some embodiments, the border includes a long border strip and a short border strip, which are connected by a corner code.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] First, a teardrop-shaped support beam is formed on the fourth side wall. On the one hand, the fourth side wall provides stable support to the third side wall, enhancing the frontal load bearing capacity and structural stability. The teardrop-shaped support beam is highly deformable and forms a mechanical coupling with the third side wall, increasing the support force on the first mounting cavity. On the other hand, a groove is formed between the teardrop-shaped support beam and the fifth side wall for fixing the corner bracket. The corner bracket installation and positioning are more convenient and accurate, improving the assembly stability and efficiency of the corner bracket. It also reduces the gap between the long and short frame strips, making it less prone to displacement under wind load vibration and ensuring the overall structural airtightness.

[0017] Second, the sixth side wall is provided with raised reinforcing ribs, which can transfer local stress to the entire cross section, avoid stress concentration, significantly improve the vertical bearing strength of the sixth side wall, strengthen the horizontal bending and compressive resistance, and are not easily deformed. At the same time, the corner bracket installation can also play a certain limiting role.

[0018] Third, the third sidewall is arranged in an upward tilt. On the one hand, it forms a dovetail angle between the first and third sidewalls, which can effectively prevent glue overflow. On the other hand, the third sidewall is not easy to tilt, collapse or become unbalanced after being compressed. Moreover, it has a large contact area with the photovoltaic panel after being compressed, resulting in good balance and improved load-bearing capacity. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the frame strip for the photovoltaic module shown in this utility model;

[0020] Figure 2 This is a perspective view of the frame strip for the photovoltaic module shown in this utility model;

[0021] Figure 3 for Figure 1 Sectional view along line AA;

[0022] Figure 4 This is a structural diagram of the frame for the photovoltaic module shown in this utility model;

[0023] Figure 5 This is a connection diagram of the frame strip and corner brackets for the photovoltaic module shown in this utility model;

[0024] Figure 6 This is a connection diagram of the frame strip and corner brackets for the photovoltaic module shown in this utility model. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0026] like Figure 1-3 The photovoltaic module frame strip shown includes a first sidewall 1, a second sidewall 2, a third sidewall 3, a fourth sidewall 4, a fifth sidewall 5, and a sixth sidewall 6, which are bent and connected in sequence. Specifically, the photovoltaic module frame strip is formed from a single sheet of steel using a cold bending forming machine, resulting in a one-piece molding process that is simple, structurally stable, eliminates the need for fasteners, and reduces costs.

[0027] The first sidewall 1, the second sidewall 2, and the third sidewall 3 form a first mounting cavity 71 for mounting a photovoltaic panel, which is then fixed with glue.

[0028] The free end of the first sidewall 1 is bent inward to close the opening. The third sidewall 3 is arranged at an upward inclination angle, specifically, the upward inclination angle 9 of the third sidewall 3 is 1.5 degrees. On the one hand, this makes the first sidewall 1 and the third sidewall 3 form a dovetail angle, which can effectively prevent glue overflow. On the other hand, the third sidewall 3 is not easy to tilt, collapse or become unbalanced after being compressed, and it has a large contact area with the photovoltaic panel after being compressed, resulting in good balance and improved load-bearing capacity.

[0029] The fourth sidewall 4, fifth sidewall 5, and sixth sidewall 6 enclose a second mounting cavity 72 for mounting corner brackets to connect adjacent frame strips. The fifth sidewall 5 has several anchor bolts 51 for connecting with the corner brackets, improving connection stability, strength, and positional accuracy. The sixth sidewall 6 has several anchor holes 62 for connecting with the corner brackets, further improving connection stability, strength, and positional accuracy.

[0030] The fourth sidewall 4 is attached to the third sidewall 3 to support and stabilize the third sidewall 3, transmit and disperse local stress, and enhance the frontal load bearing capacity and structural stability. A teardrop-shaped support beam 41 is formed on the fourth sidewall 4, which forms a mechanical coupling with the third sidewall 3, has strong deformability, and increases the support force on the first mounting cavity 71.

[0031] A groove 73 is formed between the teardrop-shaped support beam 41 and the fifth side wall 5 to fix the corner bracket. Combined with the anchor bolt 51 and anchor hole 62, this makes the corner bracket installation and positioning more convenient, precise, and stable, with higher assembly efficiency. It also reduces the gap between the long frame strip 81 and the short frame strip 82, making it less prone to displacement under wind load vibration and ensuring the overall structure's airtightness. When the photovoltaic panel is pressed against the third side wall 3, the teardrop-shaped support beam 41 will shift to the left under pressure, working together with the fifth side wall 5 to clamp the corner bracket, ensuring stable contact and further improving the corner bracket assembly stability. This further reduces the gap between the long frame strip 81 and the short frame strip 82, ensuring the overall structure's airtightness.

[0032] The sixth sidewall 6 is provided with raised reinforcing ribs 61, which can transfer local stress to the entire cross-section, avoid stress concentration, significantly improve the vertical bearing strength of the sixth sidewall 6, enhance its horizontal bending and compressive resistance, and prevent deformation. It also provides some restraint for the corner bracket installation. The cross-section of the raised reinforcing rib 61 is similar to an Ω shape or a hill shape. The raised reinforcing rib 61 is arranged near the free end of the sixth sidewall 6. The free end of the sixth sidewall 6 is shielded to prevent the cut surface from being exposed and to prevent the risk of scratches.

[0033] like Figure 4The photovoltaic module frame shown is composed of photovoltaic module frame strips spliced ​​together. The frame 8 includes two long frame strips 81 and two short frame strips 82, which are connected by corner brackets. The two ends of the corner brackets extend and are fixed within the second mounting cavity 72 of the long frame strip 81 and the second mounting cavity 72 of the short frame strip 82, respectively. Figure 5 and Figure 6 As shown, the connection method between the long border strip 81, the short border strip 82 and the corner code is existing technology and will not be described in detail here.

[0034] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A frame bar for a photovoltaic module, characterized in that, It includes a first sidewall, a second sidewall, a third sidewall, a fourth sidewall, a fifth sidewall, and a sixth sidewall that are bent and connected in sequence; the first sidewall, the second sidewall, and the third sidewall enclose a first mounting cavity, the fourth sidewall, the fifth sidewall, and the sixth sidewall enclose a second mounting cavity, the fourth sidewall is attached to the third sidewall, a teardrop-shaped support beam is formed on the fourth sidewall, and a groove is formed between the teardrop-shaped support beam and the fifth sidewall.

2. The frame bar for photovoltaic modules according to claim 1, characterized in that, The third sidewall is arranged at an upward angle.

3. The frame bar for photovoltaic modules according to claim 2, characterized in that The third sidewall is tilted upward at an angle of 1.5 degrees.

4. The frame strip for photovoltaic modules according to claim 1, characterized in that, The sixth sidewall is provided with a raised reinforcing rib, which is arranged near the free end of the sixth sidewall.

5. The frame strip for photovoltaic modules according to claim 4, characterized in that, The raised reinforcing ribs are similar to the shape of an Ω.

6. The frame bar for photovoltaic modules according to claim 1, characterized in that, The free end of the first sidewall is bent inward to close the opening.

7. The frame bar for photovoltaic modules according to claim 1, characterized in that, Several anchor bolts are provided on the fifth side wall.

8. The frame bar for photovoltaic modules according to claim 1, characterized in that, The sixth sidewall is provided with several anchor holes.

9. Frame for photovoltaic modules, characterized in that, The photovoltaic module as described in any one of claims 1-8 is assembled using frame strips.

10. The frame for photovoltaic modules according to claim 9, characterized in that, The border includes a long border strip and a short border strip, which are connected by a corner code.

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