Light photovoltaic module frame structure

Abstract

The utility model belongs to the technical field of photovoltaic modules, and particularly relates to a light photovoltaic module frame structure. Comprising long frames, short frames, corner connectors and cross beams. The two long frames and the two short frames are connected through the corner connectors distributed at the four corners of a rectangle to form a frame structure in a surrounding mode, the cross beams are arranged in the direction parallel to the short frames, the two ends of each cross beam are detachably installed on the two long frames, and a laminated part is installed on an installation plate of the frame structure in an embedded and pasted mode; the long frame and the short frame are the same in structure, and each of the long frame and the short frame comprises a supporting main frame, an L-shaped plate and a mounting plate; the frame structure disclosed by the utility model has the advantages of light weight, high loading performance, high production, construction and installation speed and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic modules, and is mainly applied to projects with low loads. It has the advantages of light product weight, high installation efficiency, detachable and transferable components, etc. In particular, it relates to a lightweight photovoltaic module frame structure. Background Art

[0002] According to statistics, generally, centralized photovoltaic power stations are mostly installed on the ground, while the application scenarios of distributed photovoltaics are mostly on the building surface. Traditional glass-crystalline silicon modules are heavy and have high requirements for the installation site. Approximately 40% of the rooftops of industrial and commercial factories lack load-bearing capacity and cannot safely and reliably support traditional glass modules weighing 15 to 20 kilograms per square meter. The main weight of the modules comes from the glass front plate and aluminum frame materials, accounting for about 70% of the module weight, which restricts the further development of distributed photovoltaics.

[0003] In response to the problem of the heavy weight of traditional photovoltaics above, many manufacturers in the market have started to introduce products with a polymer front plate as the base material and a frameless design. In terms of the installation method, only a few strips of silicone need to be applied on the back of the module and then it can be directly bonded to the roof for use. Therefore, lightweight photovoltaic module structures often use polymer transparent materials to replace heavier glass or reduce the thickness of the glass to reduce the module weight, and cancel the frame. In this way, the total weight is reduced by more than 50% compared with conventional glass modules. At the same time, eliminating the fit of the traditional support system and the roof can save costs and achieve the effects of "not picky about the roof" and aesthetics, and can achieve the characteristics of a thinner weight and easier installation.

[0004] Although lightweight photovoltaic modules have many advantages, they also have some disadvantages. Analyses show that their service life is shorter than that of traditional silicon solar modules. The main reason is the flexibility of their materials and the lack of frame protection around and in the middle, which may cause hidden cracks in the battery chips during transportation, installation, and use, resulting in impacts on the power generation of the modules and potential safety hazards. In addition, the lightweight modules themselves are relatively thin, with lower overall strength and edge strength, and it is difficult to achieve automated assembly with traditional frame designs. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a lightweight photovoltaic module frame structure, which is used to solve the problem that lightweight modules cannot be framed, will not damage the edges of the photovoltaic panels, and does not require the purchase of expensive automatic equipment in the framing process. The frame has the advantages of light weight, high load performance, fast production, construction, and installation speed, etc.

[0006] To solve the above technical problems, the utility model provides a lightweight photovoltaic module frame structure, including: long frames, short frames, corner brackets and cross beams; two of the long frames and two of the short frames are connected by the corner brackets distributed at the four corners of a rectangle to form a frame structure, the cross beams are arranged along the direction parallel to the short frames, so that both ends of the cross beams are detachably installed on the two long frames, and a laminate is embedded and pasted on the mounting plate of the frame structure;

[0007] The long frames and the short frames have the same structure, and both include: a main support frame, an L-shaped plate and a mounting plate; at one end of the top of the main support frame close to the laminate, there is the L-shaped plate extending downward, the mounting plate is located below the L-shaped plate, and one end of the mounting plate is connected to the side wall of the main support frame, and the other end extends away from the main support frame to a certain distance;

[0008] On the top of the mounting plate on the side far from the main support frame, a number of sawtooth grooves one are evenly opened;

[0009] The cross beam is in the shape of an I-beam, and a number of sawtooth grooves two are evenly opened on the top surface of the cross beam.

[0010] Preferably, a connection cavity is further provided on the main support frame for the corner bracket to be snapped in and connected.

[0011] Preferably, the corner bracket is in the shape of an L, and a number of serrated structures are provided on the inner sides of both ends of the corner bracket to improve the locking effect between the corner bracket and the connection cavity.

[0012] Preferably, the cross-sectional wall thickness of the long frame, the short frame and the cross beam is 0.5-2.5 mm.

[0013] Preferably, screw mounting holes are opened in the middle part of the I-beam of the cross beam, and the screw mounting holes are open screw hole structures; and mounting holes corresponding to and cooperating with the screw mounting holes are opened on the long frame.

[0014] Preferably, the number of the cross beams arranged is 1-3.

[0015] Preferably, the material of the frame structure is aluminum alloy, zinc-aluminum-magnesium stainless steel, PC board, PP board or polyurethane composite material, etc.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Light weight: The weight of the lightweight frame is about 0.8 kg / ㎡, and the total weight of the module is only about 5 kg / ㎡, which is about 70% lighter than the traditional module. Therefore, it can meet the roof environment with lower load, reduce the pressure on the roof structure and improve safety.

[0018] 2. Strong load-bearing performance: The frame design adopts a four-sided frame plus a middle crossbeam design. Compared with the traditional design with only a four-sided frame, it has better snow pressure resistance and wind uplift resistance, and the components are safer to use.

[0019] 3. High strength and few hidden cracks: Compared with traditional frameless lightweight components, it improves the mechanical strength, reduces the hidden crack defects of internal battery cells, and extends the service life of the components.

[0020] 4. Fast assembly speed: Traditional lightweight components on the market have fragile edges and thin thickness, so traditional frames cannot achieve automatic snap-in framing. The laminated part and the frame of the present utility model are installed by embedding and pasting during installation, which causes no damage to the edges of the components. There is no need to prepare an automatic framing machine, and the process is not only simple but also has high installation efficiency.

[0021] 5. High reliability: After adding a lightweight frame, it helps to better protect the edges of the components, strengthen the moisture sealing performance of the components, and is more suitable for the encapsulation of TOPCon high-efficiency batteries.

[0022] 6. Fast construction and replaceable: It reduces the reinforcement cost. After the lightweight components are 70% lighter than traditional components, on some roofs where the load meets the requirements of the lightweight components, no reinforcement is required, directly saving construction costs; it reduces the time cost of structural reinforcement, greatly improves the construction efficiency, and shortens the construction period.

[0023] 7. Anti-dust accumulation design: After the components are installed, the frame and the laminated part are at the same height, reducing the precipitation and accumulation of rainwater and mud ash at the edges of the frame, thus achieving the effects of component self-cleaning and more power generation. Description of the Drawings

[0024] Figure 1 It is a schematic cross-sectional structure diagram of the long and short frames of the lightweight component frame in the present utility model.

[0025] Figure 2 It is a schematic cross-sectional structure diagram of the middle crossbeam of the lightweight component frame in the present utility model.

[0026] Figure 3 It is a schematic structural diagram of the corner code used for connecting the long frame and the short frame in the present utility model.

[0027] Figure 4 It is a schematic connection structure diagram of the long frame and the middle crossbeam in the present utility model.

[0028] Figure 5 It is a schematic structural diagram after the frame is assembled in the present utility model.

[0029] Figure 6 It is a schematic installation structure diagram of the laminated part and the frame in the present utility model.

[0030] In the figure: 1-long frame, 11-mounting hole, 2-short frame, 21-supporting main frame, 22-L-shaped plate, 23-mounting plate, 24-serrated groove 1, 25-connecting cavity, 3-angle code, 31-serrated structure, 4-crossbeam, 41-serrated groove 2, 42-screw mounting hole, 5-laminated part. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0032] like Figures 1 to 6 As shown, an embodiment of the utility model provides a lightweight photovoltaic module frame structure, including: a long frame 1, a short frame 2, a corner code 3 and a crossbeam 4; two long frames 1 and two short frames 2 are connected by corner codes 3 distributed at the four corners of a rectangle to form a frame structure, and the crossbeam 4 is arranged in a direction parallel to the short frames 2, so that the two ends of the crossbeam 4 can be detachably installed on the two long frames 1, and a laminate 5 is embedded and pasted on the mounting plate 23 of the frame structure, and the height of the frame and the laminate 5 is ensured to be consistent; further, the laminate 5 is embedded and pasted with the long frames 1 and the short frames 2 on all sides, which is different from the traditional clip-in installation of the laminate 5 and the frame groove.

[0033] The long frame 1 and the short frame 2 have the same structure, both including: a supporting main frame 21, an L-shaped plate 22 and a mounting plate 23; a downwardly extending L-shaped plate 22 is provided at one end of the top of the supporting main frame 21 close to the laminate 5, and the mounting plate 23 is located below the L-shaped plate 22, and one end of the mounting plate 23 is connected to the side wall of the supporting main frame 21, and the other end extends a distance away from the supporting main frame 21; the top surface of the above-mentioned mounting plate 23 and the top surface of the beam 4 can be used as the mounting surface for mounting the laminate 5, thereby achieving the advantage of high load performance.

[0034] Moreover, an L-shaped groove is formed between the L-shaped plate 22 and the mounting plate 23, so that the glue can be filled into the L-shaped groove when gluing, so that the glue does not overflow; at the same time, the side wall of the L-shaped plate 22 can be embedded and abutted against the surrounding end faces of the laminate 5 to achieve the purpose of stable installation.

[0035] A plurality of sawtooth grooves 1 24 are evenly formed on the top of the mounting plate 23 away from the supporting main frame 21; the crossbeam 4 is in the shape of an I-beam, and a plurality of sawtooth grooves 2 41 are evenly formed on the top surface of the crossbeam 4; through the sawtooth grooves 1 24 and 41 formed on the mounting plate 23 and the crossbeam 4, the uniformity of glue distribution can be improved during gluing, so that there is no gap in the filling glue layer, thereby improving the bonding and installation effect with the laminate 5.

[0036] The support main frame 21 also includes a connection cavity 25 provided thereon for the corner fitting 3 to be snapped in and connected.

[0037] The corner fitting 3 is in an L shape, and a plurality of serrated structures 31 are provided on the inner sides of the two ends' corners of the corner fitting 3 to improve the locking effect between the corner fitting 3 and the connection cavity 25.

[0038] The cross-sectional wall thickness of the long side frame 1, the short side frame 2, and the cross beam 4 is 0.5 - 2.5 mm to achieve the advantage of light structural weight.

[0039] A screw installation hole 42 is provided in the I-shaped middle part of the cross beam 4, and the screw installation hole 42 is an open screw hole structure, so that it is easy to install when rotating and fixing the screw; and an installation hole 11 corresponding to and cooperating with the screw installation hole 42 is provided on the long side frame 1.

[0040] The number of the cross beams 4 arranged is 1 - 3.

[0041] The material of the frame structure is aluminum alloy, zinc-aluminum-magnesium stainless steel, PC board, PP board, or polyurethane composite material.

[0042] The frame structure is not only applicable to lightweight glass components but also includes lightweight composite material components.

[0043] The present utility model also provides an assembling method for a lightweight photovoltaic module frame structure for assembling a lightweight photovoltaic module frame structure as described above, including the following steps:

[0044] Step 1: Component lamination; stack the materials required for each layer of the component together and then perform lamination in a laminator to obtain a laminated part 5;

[0045] Step 2: Frame assembly; connect the long side frame 1 and the short side frame 2 through the corner fitting 3 in the connection cavity 25 to connect the long side frame 1 and the short side frame 2 together to form a rectangular frame body; then install the middle cross beam 4 parallel to the short side frame 2 direction onto the corresponding installation position of the long side frame 1, and then fix the long side frame 1 and the cross beam 4 together with screws to finally form a complete frame structure;

[0046] Step 3: Frame sealing; apply glue on the A surface of the long side frame 1, the short side frame 2, and the cross beam 4 to prepare for framing and bonding the frame structure and the laminated part 5; the A surface is the top surface of the mounting plate 23 and the cross beam 4;

[0047] Step 4: Laminated part 5 framing; embed and install the pre-prepared laminated part 5 into the frame structure, and bond and connect the back surface of the laminated part 5 with the A surface of the long side frame 1, the short side frame 2, and the cross beam 4 through a colloid medium;

[0048] Step 5: Inspection and cleaning after framing; By means of visual inspection, wipe the dirt and silicone on the glass surface, frame surface and back plate surface of the framed component to ensure the cleanliness of the component. Then polish the sharp corners around the frame to ensure the cleanliness and safety of the component.

[0049] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention according to the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A lightweight photovoltaic module frame structure, characterized in that: include: A long frame (1), a short frame (2), a corner bracket (3) and a crossbeam (4); two of the long frames (1) and two of the short frames (2) are connected to form a frame structure through the corner brackets (3) distributed at the four corners of a rectangle; the crossbeam (4) is arranged in a direction parallel to the short frames (2) so that both ends of the crossbeam (4) can be detachably mounted on the two long frames (1); and a laminate (5) is embedded and glued on a mounting plate (23) of the frame structure; The long frame (1) and the short frame (2) have the same structure, both comprising: a supporting main frame (21), an L-shaped plate (22) and a mounting plate (23); The L-shaped plate (22) extending downward is provided at one end of the top of the main support frame (21) close to the laminate (5), the mounting plate (23) is located below the L-shaped plate (22), one end of the mounting plate (23) is connected to the side wall of the main support frame (21), and the other end extends away from the main support frame (21) to a certain distance; A plurality of sawtooth grooves (24) are evenly formed on the top of the mounting plate (23) at a side away from the supporting main frame (21); The cross beam (4) is in the shape of an I-beam, and a plurality of sawtooth grooves (41) are evenly arranged on the top surface of the cross beam (4).

2. A lightweight photovoltaic module frame structure as claimed in claim 1, characterized in that: The supporting main frame (21) also includes a connecting cavity (25) for the angle code (3) to be inserted and connected.

3. A lightweight photovoltaic module frame structure as claimed in claim 2, characterized in that: The angle code (3) is L-shaped, and a plurality of sawtooth structures (31) are provided on the inner sides of the two end corners of the angle code (3) to improve the locking effect between the angle code (3) and the connecting cavity (25).

4. A lightweight photovoltaic module frame structure as claimed in claim 1, characterized in that: The cross-sectional wall thickness of the long frame (1), the short frame (2) and the crossbeam (4) is 0.5 to 2.5 mm.

5. A lightweight photovoltaic module frame structure as claimed in claim 1, characterized in that: A screw mounting hole (42) is provided in the middle portion of the I-shaped crossbeam (4), and the screw mounting hole (42) is an open screw hole structure; and a mounting hole (11) corresponding to the screw mounting hole (42) is provided on the long frame (1).

6. A lightweight photovoltaic module frame structure as claimed in claim 1, characterized in that: The number of the cross beams (4) arranged is 1 to 3.

7. A lightweight photovoltaic module frame structure as claimed in claim 1, characterized in that: The frame structure is made of aluminum alloy, zinc-aluminum-magnesium stainless steel, PC board, PP board or polyurethane composite material.

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