Photovoltaic module mounting and fixing system and photovoltaic system

Abstract

The utility model provides a photovoltaic assembly installing and fixing system and a photovoltaic system. The photovoltaic module mounting and fixing system comprises a cross beam and a fixing assembly, wherein the cross beam is cut and folded upwards to form a cross beam clamping hook, and a cross beam clamping groove with an inward or outward notch is formed in the position of the cross beam clamping hook; the photovoltaic module is placed between the cross beam clamping hooks and then fixed through the fixing assembly, one side face of the photovoltaic module is attached to the fixing assembly, the other side face of the photovoltaic module is attached to the cross beam, and a sliding gap is reserved between the other side face of the photovoltaic module and the cross beam clamping hooks. The photovoltaic module mounting and fixing system can give consideration to both load improvement and cost reduction.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module installation, and in particular to a photovoltaic module installation and fixing system and a photovoltaic system. Background Technology

[0002] Currently, existing photovoltaic (PV) modules are installed by fixing their frames to the PV support structure using aluminum clamps or bolts. However, under high wind loads, the aluminum clamps can slip or break, and the bolts can cause tearing around the mounting holes. This means that current PV module installation methods cannot meet the back-side load requirements in high-wind-load areas. To address this issue, existing PV companies have taken measures such as increasing the thickness of the glass or frame of the PV modules, or increasing the number of fastening points. For example, they have changed the conventional double crossbeam to a triple crossbeam, and the four-point installation to a six-point bolt or aluminum clamp installation. In addition, patent number CN220693025U proposes a new installation scheme, namely the baffle installation scheme, which significantly improves load-bearing capacity. However, baffle installation still increases material and installation costs. Therefore, it is necessary to improve the PV module installation method to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a photovoltaic module mounting and fixing system and a photovoltaic system. This photovoltaic module mounting and fixing system can balance increased load capacity and reduced cost.

[0004] To achieve the objective of this utility model, the following technical solution is adopted:

[0005] According to one aspect of the present invention, a photovoltaic module mounting and fixing system is provided, the photovoltaic module mounting and fixing system including a crossbeam and a fixing component; wherein, the crossbeam is cut and folded upward to form a crossbeam hook, and a crossbeam groove with an inward or outward notch is formed at this position; after the photovoltaic module is placed between the crossbeam hooks, it is fixed by the fixing component, one side of the photovoltaic module is attached to the fixing component, and the other side of the photovoltaic module is attached to the crossbeam with a sliding gap between it and the crossbeam hook.

[0006] According to one embodiment of the present invention, the crossbeam is cut and folded upward to form the crossbeam hook, and the unfolded portion of the crossbeam is parallel to or inclined to the crossbeam.

[0007] According to one embodiment of the present invention, the angle between the crossbeam hook and the crossbeam groove is a right angle, an obtuse angle, or an acute angle.

[0008] According to one embodiment of the present invention, the fixing component includes a side pressure block, a bolt, a spring washer, a flat washer, a middle pressure block, and a nut block. The side pressure block is disposed at the end of the photovoltaic module, the middle pressure block is disposed between two photovoltaic modules, and the bolt passes through the spring washer, the flat washer, the side pressure block or the middle pressure block, and the crossbeam in sequence before being locked by the nut block.

[0009] According to one embodiment of the present invention, the edge pressure block includes a stepped plate and a base plate. The base plate is placed on the crossbeam. The first step of the stepped plate is attached to one side of the photovoltaic module. The bolt passes through the spring washer, the flat washer, the second step of the stepped plate and the crossbeam in sequence and is then locked by the nut block.

[0010] According to one embodiment of the present invention, the intermediate pressure block has a Z-shaped structure, which is placed upside down between the two photovoltaic modules. The bolt passes through the spring washer, the flat washer, the groove of the Z-shaped structure and the crossbeam in sequence and is then locked by the nut block.

[0011] According to another aspect of the present invention, a photovoltaic system is provided, the photovoltaic system including the aforementioned photovoltaic module mounting and fixing system and photovoltaic modules, the photovoltaic module mounting and fixing system connecting two adjacent photovoltaic modules; the photovoltaic module includes a module frame, one side of the module frame is a frame A side and the other side is a frame C side, the module frame is placed between the crossbeam hooks and fixed by the fixing component, the frame A side is attached to the fixing component, the frame C side is attached to the crossbeam and a sliding gap is left between it and the crossbeam hook.

[0012] One embodiment of this utility model has the following advantages or beneficial effects:

[0013] This utility model discloses a photovoltaic module mounting and fixing system and a photovoltaic system comprising a crossbeam, photovoltaic modules, and fixing components. When the photovoltaic module is subjected to a back load, it gradually arches upward, and the module frame slides. The sliding gap between the C-side of the frame and the crossbeam hooks gradually decreases until they are tightly fitted. At this point, the photovoltaic module forms an arched arc surface in the width direction, and the crossbeam hooks begin to constrain the module frame, preventing it from sliding further. This changes the stress distribution, making the stress distribution of the module more uniform and the safe load higher. This photovoltaic module mounting and fixing system can balance increased load capacity and reduced cost.

[0014] The photovoltaic module mounting and fixing system determines the mounting hole positions based on the module and clamp dimensions, and then determines the folding hook positions based on the frame dimensions. The portion that would normally be cut off is replaced with an upward-folding hook design, allowing the protruding hooks to engage with the module frame. Cutting off material from the side of the crossbeam that contacts the frame does not significantly affect the crossbeam's load-bearing capacity, as the crossbeam primarily relies on its two vertical sides for bending resistance. After the module bears a certain back load, the frame contacts the folded surface on the crossbeam, restricting the frame's slippage caused by the load. This transfers the force and deformation of the module from the slipping side (short frame) to the fixed side (long frame), resulting in more uniform overall force and deformation of the module. This improves the module's stiffness (i.e., resistance to deformation) and strength (i.e., resistance to damage). Attached Figure Description

[0015] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the photovoltaic module installation and fixing system and the photovoltaic system in this utility model.

[0017] Figure 2 This is an enlarged schematic diagram of the end-mounted structure of the photovoltaic module in this utility model.

[0018] Figure 3 This is a schematic diagram of the exploded structure of the installation between two photovoltaic modules in this utility model.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the installation between two photovoltaic modules in this utility model.

[0020] Figure label:

[0021] 1. Crossbeam; 11. Crossbeam hook; 12. Crossbeam bolt hole; 13. Crossbeam groove; 2. Photovoltaic module; 21. Module frame; 22. Frame A side; 23. Frame C side; 3. Fixing module; 31. Side pressure block; 32. Bolt; 33. Spring washer; 34. Flat washer; 35. Center pressure block; 36. Nut block; 4. Sliding clearance. Detailed Implementation

[0022] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0023] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “include” and “have” are used to indicate an open-ended meaning of inclusion and that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0024] like Figures 1 to 4 As shown, the photovoltaic module installation and fixing system of this utility model embodiment includes a crossbeam 1 and a fixing component 3; wherein, the crossbeam 1 is cut and folded upward to form a crossbeam hook 11, and a crossbeam groove 13 with an inward or outward notch is formed at this position; the photovoltaic module 2 is placed between the crossbeam hooks 11 and fixed by the fixing component 3, one side of the photovoltaic module 2 is attached to the fixing component 3, and the other side of the photovoltaic module 2 is attached to the crossbeam 1 with a sliding gap 4 between it and the crossbeam hook 11.

[0025] The crossbeam 1 is cut and folded upward to form a crossbeam hook 11. The unfolded part of the crossbeam 1 is parallel to or inclined to the crossbeam 1.

[0026] The angle between the crossbeam hook 11 and the crossbeam groove 13 is a right angle, an obtuse angle, or an acute angle.

[0027] The crossbeam 1 has several crossbeam bolt holes 12. The fixing component 3 includes a side pressure block 31, a bolt 32, a spring washer 33, a flat washer 34, a middle pressure block 35, and a nut block 36. The side pressure block 31 is placed at the end of the photovoltaic module 2, and the middle pressure block 35 is placed between two photovoltaic modules 2. The bolt 32 passes through the spring washer 33, the flat washer 34, the side pressure block 31 or the middle pressure block 35, and the crossbeam bolt hole 12 in sequence, and is then locked by the nut block 36.

[0028] The edge pressure block 31 includes a stepped plate and a base plate. The base plate is placed on the crossbeam 1. The first step of the stepped plate is attached to one side of the photovoltaic module 2. The bolt 32 passes through the spring washer 33, the flat washer 34, the second step of the stepped plate and the bolt hole 12 of the crossbeam in sequence and is then locked by the nut block 36.

[0029] The intermediate pressure block 35 has a Z-shaped structure, which is placed upside down between the two photovoltaic modules 2. The bolt 32 passes through the spring washer 33, the flat washer 34, the Z-shaped groove and the crossbeam bolt hole 12 in sequence, and is then locked by the nut block 36.

[0030] The photovoltaic system of this utility model embodiment includes the aforementioned photovoltaic module mounting and fixing system and photovoltaic module 2. The photovoltaic module mounting and fixing system connects two adjacent photovoltaic modules 2. The photovoltaic module 2 includes a module frame 21. One side of the module frame 21 is a frame A side 22 and the other side is a frame C side 23. The module frame 21 is placed between the crossbeam hooks 11 and fixed by the fixing component 3. The frame A side 22 is attached to the fixing component 3, and the frame C side 23 is attached to the crossbeam 1 and a sliding gap 4 is left between it and the crossbeam hooks 11.

[0031] like Figure 2 As shown, the photovoltaic module 2 is fastened to the crossbeam 1 by the fixing component 3. When installing the end of the photovoltaic module 2, the module frame 21 is placed between the crossbeam hooks 11 on the crossbeam 1, and then the side pressure block 31 is placed. The bolt 32 passes through the spring washer 33, the flat washer 34, the side pressure block 31, and the crossbeam bolt hole 12 in sequence. Finally, the nut block 36 is used to lock the middle pressure block 35 and fix the module frame 21.

[0032] like Figure 3 As shown, when installing and connecting two photovoltaic modules 2, the module frame 21 is placed between the crossbeam hook 11 and the crossbeam bolt hole 12, and then the intermediate pressure block 35 is placed. The bolt 32 passes through the spring washer 33, the flat washer 34, the intermediate pressure block 35, and the crossbeam bolt hole 12 in sequence. Finally, the intermediate pressure block 35 is locked with the nut block 36 to fix the module frame 21.

[0033] like Figure 4 As shown, the crossbeam 1 is formed by cutting and punching the crossbeam groove 13 and the crossbeam bolt holes 12, and then folding the partially cut and separated part to form the crossbeam hook 11. The upward folded part of the crossbeam hook 11 can be a right angle, an obtuse angle, or an acute angle. The unfolded part can be kept horizontal with the original surface or have a certain tilt angle. After installation, the intermediate pressure block 35 is tightly attached to the frame A side 22, and the frame C side 23 is tightly attached to the crossbeam 1. A sliding gap 4 is left between the frame C side 23 and the crossbeam hook 11. When the photovoltaic module 2 bears the back load, it gradually arches upward, and the module frame 21 slides. The sliding gap 4 between the frame C side 23 and the crossbeam hook 11 gradually narrows until they are tightly attached. At this time, the photovoltaic module 2 forms an arched arc surface in the width direction, and the crossbeam hook 11 begins to constrain the module frame 21, preventing it from continuing to slide. This changes the stress form, making the stress distribution of the module more uniform and the safe load higher. The photovoltaic module installation and fixing system and the photovoltaic system can simultaneously improve load capacity and reduce costs.

[0034] The crossbeam hook 11 is folded from the inside of the component to the component frame, with the cut groove notch facing outwards. Alternatively, the cut groove notch can face inwards, and the hook folds from the bottom of the frame to the inside of the component. In practical applications, one hook bears tensile stress, and the other bears compressive stress.

[0035] In domestic photovoltaic (PV) mounting systems, the side of the crossbeam (C-shaped steel) that contacts the module has a recessed hole, with the recessed side facing upwards and the C-shaped opening facing downwards for installation. This solution determines the mounting hole positions based on the module and pressure block dimensions, and then determines the folding hook positions based on the frame dimensions. The portion that would normally be cut off is replaced with an upward-folding hook design, allowing the protruding hook to engage with the module frame. Cutting off material from the side of the crossbeam that contacts the frame does not significantly affect the crossbeam's load-bearing capacity, as the crossbeam primarily relies on its two vertical sides for bending resistance. After the module bears a certain back load, the frame contacts the folded surface on the crossbeam, restricting the frame's slippage caused by the load. This transfers the force and deformation of the module from the slipping side (short frame) to the fixed end frame (long frame), resulting in more uniform overall force and deformation of the module. This improves the module's stiffness (i.e., resistance to deformation) and strength (i.e., resistance to damage).

[0036] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0037] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0038] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic module mounting fixture system, characterized by, include: Crossbeam (1) and fixing assembly (3); The crossbeam (1) is cut and folded upward to form a crossbeam hook (11), and a crossbeam groove (13) with a notch facing inward or outward is formed at this position; After the photovoltaic module (2) is placed between the crossbeam hooks (11), it is fixed by the fixing component (3). One side of the photovoltaic module (2) is attached to the fixing component (3), and the other side of the photovoltaic module (2) is attached to the crossbeam (1) with a sliding gap (4) between it and the crossbeam hooks (11).

2. A photovoltaic module mounting system according to claim 1, wherein, The crossbeam (1) is cut and folded upward to form the crossbeam hook (11), and the unfolded part of the crossbeam (1) is parallel to or inclined to the crossbeam (1).

3. A photovoltaic module mounting system according to claim 1, wherein The angle between the crossbeam hook (11) and the crossbeam groove (13) is a right angle, an obtuse angle, or an acute angle.

4. A photovoltaic module mounting system according to claim 1, wherein, The fixing component (3) includes a side pressure block (31), a bolt (32), a spring washer (33), a flat washer (34), a middle pressure block (35), and a nut block (36). The side pressure block (31) is placed at the end of the photovoltaic module (2), and the middle pressure block (35) is placed between two photovoltaic modules (2). The bolt (32) passes through the spring washer (33), the flat washer (34), the side pressure block (31) or the middle pressure block (35), and the crossbeam (1) in sequence and is then locked by the nut block (36).

5. A photovoltaic module mounting system according to claim 4, wherein, The edge pressure block (31) includes a stepped plate and a base plate. The base plate is placed on the crossbeam (1). The first step of the stepped plate is attached to one side of the photovoltaic module (2). The bolt (32) passes through the spring washer (33), the flat washer (34), the second step of the stepped plate and the crossbeam (1) in sequence and is then locked by the nut block (36).

6. A photovoltaic module mounting system according to claim 4, wherein, The intermediate pressure block (35) has a Z-shaped structure, which is placed upside down between the two photovoltaic modules (2). The bolt (32) passes through the spring washer (33), the flat washer (34), the Z-shaped groove and the crossbeam (1) in sequence and is then locked by the nut block (36).

7. A photovoltaic system characterized by, include: The photovoltaic module mounting and fixing system and the photovoltaic module (2) as described in any one of claims 1-6, wherein the photovoltaic module mounting and fixing system connects two adjacent photovoltaic modules (2); The photovoltaic module (2) includes a module frame (21), one side of the module frame (21) is a frame A side (22) and the other side is a frame C side (23). The module frame (21) is placed between the crossbeam hooks (11) and then fixed by the fixing component (3). The frame A side (22) is attached to the fixing component (3), and the frame C side (23) is attached to the crossbeam (1) with a sliding gap (4) between it and the crossbeam hooks (11).

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