A photovoltaic power station and its photovoltaic array component gap waterproof structure

Abstract

This utility model discloses a waterproof structure for the gaps between photovoltaic power plants and their photovoltaic array components. It allows for the installation of waterproof components by incorporating the conventional structure of the component frame. The waterproof structure is located at the gap between two adjacent photovoltaic components. The waterproof component includes an inverted V-shaped portion covering the gap between the two adjacent photovoltaic components and mounting portions corresponding to both sides of the inverted V-shaped portion. The mounting portions are glued and fixed to the A-side of the frame. One side of the mounting portion connects to the bottom end of the inverted V-shaped portion, and the other side has a barb. A groove is provided on the inner side of the A-side of the frame, and the barb engages with the groove. Its waterproof effect is superior to filling with silicone weather-resistant sealant, reducing costs and improving the installation efficiency of the photovoltaic system.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to a waterproof structure for photovoltaic power stations. [Background Technology]

[0002] Currently, photovoltaic module installation requires consideration of thermal expansion and contraction due to temperature changes, necessitating the inclusion of expansion joints between modules. However, this can lead to leaks during rain. There are two main waterproofing methods: one involves installing water channels under the module gaps, but this method is overly complex, requires multiple layers, and has low acceptance rates; the other method uses a waterproof channel, but this has a drawback: the entire water load rests on this channel, and the pressure generated during module expansion and contraction also acts on it. Furthermore, the material is relatively thin, making the connection between the waterproof channel and the module frame prone to loosening, thus reducing its lifespan.

[0003] Referring to Chinese utility model patents CN 220754764 U and CN 222140492 U, both use a waterproof component at the gap for waterproofing. However, to secure the waterproof component, the component frame needs to be redesigned, increasing costs. [Utility Model Content]

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a waterproof structure for the gaps between photovoltaic power plants and their photovoltaic array components. This structure can be integrated with the conventional structure of the component frame to achieve the installation of waterproof components, thus solving the problem that existing technologies require redesigning the component frame for installing waterproof components.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] First, a waterproof structure for the gap between photovoltaic array components is provided, including photovoltaic components and purlins. At least two photovoltaic components are installed side by side on the purlins. The photovoltaic components have frames. The purlins are connected to a pressure plate assembly. The pressure plate assembly cooperates with the frame to fix the photovoltaic components to the purlins. A waterproof component is provided at the gap between two adjacent photovoltaic components. The waterproof component includes an inverted V-shaped portion covering the gap between two adjacent photovoltaic components and mounting portions corresponding to both sides of the inverted V-shaped portion. The mounting portions are glued and fixed to the A-side of the frame. One side of the mounting portion is connected to the bottom end of the inverted V-shaped portion, and the other side is provided with a barb. A hook groove is provided on the inner side of the A-side of the frame, and the barb cooperates with the hook groove.

[0007] Preferably, the mounting part is provided with a double-sided adhesive strip, and the two adhesive surfaces of the double-sided adhesive strip are respectively glued and fixed to the bottom surface of the mounting part and the A side of the frame.

[0008] Preferably, the A-side of the frame is provided with an arc surface that connects with the groove, and the mounting part is provided with an arc segment that fits with the arc surface.

[0009] Preferably, the waterproof component is a sheet metal component.

[0010] Preferably, the pressure plate assembly includes a pressure plate pressed onto the C-side of the photovoltaic module frame and fasteners connecting the pressure plate to the purlin.

[0011] Preferably, the fastener is a U-bolt, which is attached to the purlin and connected to the pressure plate.

[0012] Preferably, the U-bolt includes a U-shaped screw that hugs the purlin, and the pressure plate assembly also includes a clamping plate that presses against the bottom surface of the purlin. The pressure plate and the clamping plate are provided with fixing holes. The opening of the U-shaped screw faces downward and the screw head passes through the fixing holes on the pressure plate and the clamping plate in sequence and is connected to a nut.

[0013] Preferably, the C-side of the photovoltaic module frame is provided with a fixed plane, the pressure plate is provided with a pressing part that presses against the fixed plane, and the pressure plate is provided with an upwardly protruding U-shaped part on the side away from the pressing part.

[0014] In addition, a photovoltaic power station is also provided, including a photovoltaic array composed of photovoltaic modules, with the aforementioned waterproof structure provided at the gap between two horizontally adjacent photovoltaic modules.

[0015] Preferably, the gap between two adjacent photovoltaic modules in the longitudinal direction is filled with waterproof adhesive.

[0016] The present invention adopts the above technical solution and has the following beneficial effects:

[0017] 1. A waterproof component is installed between two adjacent photovoltaic (PV) modules, covering the gap from above. Because the component has an inverted V-shaped section that covers the gap, this design effectively separates water, reducing its impact at the bottom and directing it towards the PV module surfaces. Rainwater flows across the PV module surfaces instead of accumulating in the gap, providing excellent water blocking and drainage. This waterproofing effect is superior to using silicone weather-resistant sealant, reducing costs and improving PV system installation efficiency.

[0018] The waterproof component's mounting section is glued and fixed to surface A of the frame. The mounting section also features barbs, and the inner side of surface A of the frame has a groove for the barbs to engage with the groove. By using glue for fixation and simultaneously employing barbs to connect with the module frame, the fixing strength is increased. The groove is a standard design feature of common photovoltaic module frames; therefore, the waterproof component can be installed by incorporating the standard structure of the module frame, solving the problem of needing to redesign the module frame for installing waterproof components in existing technologies.

[0019] 2. The mounting section is equipped with double-sided adhesive strips. The two adhesive sides of the double-sided adhesive strips are glued and fixed to the mounting section and the A side of the frame, respectively. The adhesive strips are fixed to the waterproof parts in advance. During installation, the protective film of the adhesive strips can be peeled off and installed directly without the need for additional glue. The material usage is small and the construction is convenient.

[0020] 3. Since the frame A side has an arc surface that connects with the groove, the mounting part has an arc segment that fits with the arc surface, thereby ensuring that the mounting part fits tightly with the frame A side and ensuring the adhesive strip is glued and fixed.

[0021] 4. The waterproof seal is made of sheet metal, which makes it easy to form, reducing costs and improving the installation efficiency of the photovoltaic system.

[0022] 5. The pressure plate assembly uses U-bolts as fasteners. Only one bolt is needed. The U-bolt has its opening facing down and its head passes through the fixing holes on the pressure plate and clamping plate in sequence and is connected to a nut. Since the space between the purlin and the bottom surface of the photovoltaic module is limited, the operation of tightening the nut is carried out below the purlin, which is more convenient than the operation above.

[0023] 6. The C-side of the photovoltaic module frame is provided with a fixed plane, and the pressure plate is provided with a pressing part that presses against the fixed plane. The pressing part and the fixed plane have a large contact area. Under the fastening action of the fasteners, the pressing part presses against the fixed plane to prevent loosening.

[0024] 7. Because the pressure plate has an upwardly protruding U-shaped part on the side away from the pressing part, it can effectively support the pressure plate on the purlin on the side away from the pressing part, and facilitate the pressing part to press and fix the plane.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0026] The utility model will be further described below with reference to the accompanying drawings:

[0027] Figure 1 A plan view of the waterproof structure for the photovoltaic array;

[0028] Figure 2A schematic diagram of a waterproof structure installed between two adjacent photovoltaic modules;

[0029] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle;

[0030] Figure 4 for Figure 2 Schematic diagram of the structure at point B;

[0031] Figure 5 This is a structural schematic diagram of a waterproof seal.

[0032] Reference numerals: Waterproof component 1, Inverted V-shaped part 11, Mounting part 12, Flat section 121, Arc section 122, Barb 123, Double-sided adhesive strip 13, Frame 21, A side 211, Hook groove 212, C side 213, Pressure plate assembly 3, Pressure plate 31, Pressing part 311, U-shaped part 312, Clamping plate 32, U-bolt 33, Purlin 4, Waterproof adhesive 5.

Detailed Implementation Methods

[0033] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0034] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0035] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "longitudinal," and "lateral," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Example 1

[0038] Reference Figures 1 to 5 As shown, a photovoltaic power station includes a photovoltaic array composed of photovoltaic modules 2 and purlins 4 for mounting the photovoltaic modules. At least two photovoltaic modules 2 are mounted side by side on the purlins 4. Each photovoltaic module has a frame 21, and a pressure plate assembly 3 is connected to the purlins 4. The pressure plate assembly 3 cooperates with the frame 21 to fix the photovoltaic module 2 to the purlins 4. Waterproof structures are provided at the gaps between two adjacent photovoltaic modules laterally and between two adjacent photovoltaic modules longitudinally. The gaps between two adjacent photovoltaic modules longitudinally are filled with waterproof adhesive 5. The waterproof structure at the gaps between two adjacent photovoltaic modules laterally includes a waterproof component 1. This is because the photovoltaic modules are rectangular, with the two lateral sides being the long sides and the two longitudinal sides being the short sides. Since the photovoltaic modules are arranged diagonally along the longitudinal direction, rainwater mainly flows along the longitudinal direction. Therefore, filling the gaps between two adjacent photovoltaic modules longitudinally with waterproof adhesive is sufficient, and water will not linger at these locations.

[0039] The waterproof component 1 includes an inverted V-shaped portion 11 covering the gap between two adjacent photovoltaic modules and mounting portions 12 corresponding to both sides of the inverted V-shaped portion. The mounting portions 12 are glued and fixed to the A-side 211 of the frame. One side of the mounting portion 12 is connected to the bottom end of the inverted V-shaped portion, and the other side is provided with a barb 123. The inner side of the A-side of the frame is provided with a hook groove 212, and the barb 123 cooperates with the hook groove 212.

[0040] The technical solution of this embodiment, because the waterproof component has an inverted V-shaped portion covering the gap between two adjacent photovoltaic modules, uses an inverted V-shape to better separate the water, reducing the impact force at the bottom and directing it to the surfaces of the photovoltaic modules on both sides. Ultimately, rainwater flows on the surface of the photovoltaic modules and does not remain in the gap between adjacent modules, achieving a good water-blocking and water-guiding effect. Furthermore, the waterproofing effect is superior to using silicone weather-resistant sealant, reducing costs and improving the installation efficiency of the photovoltaic system. In addition, the inverted V-shape helps absorb deformation caused by the thermal expansion and contraction of the modules.

[0041] In addition, the mounting part of the waterproof component is glued and fixed to surface A of the frame. The mounting part also features a barb, and the inner side of surface A of the frame has a groove for the barb to engage with the groove. By using glue for fixation and simultaneously employing barbs to connect with the module frame, the fixing capacity is increased. The groove is a common design feature of photovoltaic module frames; therefore, photovoltaic modules with grooves can be selected for installation of this waterproof component. This approach, combining the conventional structure of the module frame, achieves the installation of the waterproof component, solving the problem of needing to redesign the module frame for installing waterproof components in existing technologies.

[0042] In this embodiment, the mounting part 12 is provided with a double-sided adhesive strip 13. The two adhesive surfaces of the double-sided adhesive strip 13 are respectively glued and fixed to the bottom surface of the mounting part and the A-side of the frame. Using the adhesive strip fixing method, the adhesive strip is pre-fixed to the waterproof component. After the photovoltaic module position is fixed, the waterproof component is installed from top to bottom. During installation, the protective film of the adhesive strip can be peeled off for direct installation. The mounting part 12 only needs to be tightly fitted to the A-side of the frame 211; no additional glue is required, resulting in less material usage and convenient construction. The A-side of the frame 211 has a flat surface and an arc surface that connects to the groove. The mounting part 12 has a flat segment 121 that fits with the flat surface of the A-side of the frame and an arc segment 122 that fits with the arc surface. This ensures a tight fit between the mounting part and the A-side of the frame, guaranteeing the effective adhesive strip fixing.

[0043] Preferably, the waterproof component 1 is a sheet metal part. This facilitates molding, reduces costs, and improves the installation efficiency of the photovoltaic system.

[0044] In this embodiment, the pressure plate assembly 3 includes a pressure plate 31 pressed against the C-side of the photovoltaic module frame and fasteners connecting the pressure plate to the purlin. The fasteners are U-bolts 33, which are attached to the purlin 4 and connected to the pressure plate 31. The pressure plate 31 has fixing holes, and the U-bolt 33 includes a U-shaped threaded rod that is attached to the purlin 4. The pressure plate assembly also includes a clamping plate 32 pressed against the bottom surface of the purlin. The clamping plate also has fixing holes, and the opening of the U-shaped threaded rod faces downwards, with the threaded rod head passing through the fixing holes on the pressure plate and clamping plate and connected to a nut. Because the space between the purlin and the bottom surface of the photovoltaic module is limited, the tightening of the nut is performed below the purlin, which is more convenient than tightening from above.

[0045] The photovoltaic module frame has a fixed plane on its C-side 213, and the pressure plate 4 has a pressing part 311 that presses against the fixed plane. The pressing part is the same width as the pressure plate, but has a larger extension length, so the pressing part and the fixed plane have a larger contact area. Under the fastening action of the fasteners, the pressing part presses against the fixed plane to prevent loosening.

[0046] In this embodiment, the pressure plate 31 has an upwardly protruding U-shaped part 312 on the side away from the pressing part, so as to ensure that the pressure plate can be effectively supported on the purlin on the side away from the pressing part, and to facilitate the pressing part to press and fix the plane.

[0047] In one implementation, the pressure plate 31 is made of stainless steel, and the purlin 4 is made of square steel, U-shaped steel, or C-shaped steel. This method is less expensive than using aluminum alloy. It is understood that other conventional materials and structures can also be used.

[0048] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A photovoltaic array assembly gap waterproof structure, comprising a photovoltaic assembly and a purlin, at least two photovoltaic assemblies are installed side by side on the purlin, the photovoltaic assembly has a frame, the purlin is connected with a pressing plate assembly, the pressing plate assembly cooperates with the frame to fix the photovoltaic assembly on the purlin, and a waterproof piece is arranged at a gap between two adjacent photovoltaic assemblies, characterized in that, The waterproof component includes an inverted V-shaped portion covering the gap between two adjacent photovoltaic modules and mounting portions corresponding to both sides of the inverted V-shaped portion. The mounting portions are glued and fixed to the A-side of the frame. One side of the mounting portion is connected to the bottom end of the inverted V-shaped portion, and the other side is provided with a barb. The inner side of the A-side of the frame is provided with a hook groove, and the barb engages with the hook groove.

2. The waterproof structure for the gaps in the photovoltaic array module according to claim 1, characterized in that, The mounting part is provided with a double-sided adhesive strip, and the two adhesive sides of the double-sided adhesive strip are respectively glued and fixed to the bottom surface of the mounting part and the A side of the frame.

3. The waterproof structure for the gaps in the photovoltaic array module according to claim 1, characterized in that, The frame A surface is provided with an arc surface that connects with the hook groove, and the mounting part is provided with an arc segment that fits with the arc surface.

4. The waterproof structure for the gaps in the photovoltaic array module according to claim 1, characterized in that, The waterproof component is a sheet metal part.

5. The waterproof structure for the gaps in the photovoltaic array module according to claim 1, characterized in that, The pressure plate assembly includes a pressure plate pressed onto the C-side of the photovoltaic module frame and fasteners connecting the pressure plate to the purlin.

6. The waterproof structure for the gaps in the photovoltaic array module according to claim 5, characterized in that, The fastener is a U-bolt, which is attached to the purlin and connected to the pressure plate.

7. The waterproof structure for the gaps in the photovoltaic array module according to claim 6, characterized in that, The U-bolt includes a U-shaped screw that hugs the purlin, and the pressure plate assembly also includes a clamping plate that presses against the bottom surface of the purlin. The pressure plate and the clamping plate are provided with fixing holes. The opening of the U-shaped screw faces downward and the screw head passes through the fixing holes on the pressure plate and the clamping plate in sequence and is connected to a nut.

8. The waterproof structure for the gaps in the photovoltaic array module according to claim 7, characterized in that, The C-side of the photovoltaic module frame is provided with a fixed plane, the pressure plate is provided with a pressing part that presses against the fixed plane, and the pressure plate is provided with an upwardly protruding U-shaped part on the side away from the pressing part.

9. A photovoltaic power station, comprising a photovoltaic array composed of photovoltaic modules, characterized in that, A waterproof structure as described in any one of claims 1 to 8 is provided at the gap between two horizontally adjacent photovoltaic modules.

10. The photovoltaic power station according to claim 9, characterized in that, Waterproof adhesive is used to fill the gap between two adjacent photovoltaic modules in the longitudinal direction.

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