Self-cleaning photovoltaic module front sheet

Abstract

The utility model discloses a kind of self-cleaning photovoltaic module front plate, belong to photovoltaic technical field, including photoelectric area photovoltaic mechanism and clear edge area photovoltaic mechanism, photoelectric area photovoltaic mechanism and clear edge area photovoltaic mechanism connection, photoelectric area photovoltaic mechanism is used to receive sunlight and generate electric energy, clear edge area photovoltaic mechanism is used to realize self-cleaning to dust and water droplet, clear edge area photovoltaic mechanism includes clear edge area photovoltaic front plate, clear edge area film-coated base layer and clear edge area top film-coated component, clear edge area film-coated base layer is fixedly connected with clear edge area photovoltaic front plate upper end, clear edge area top film-coated component is connected with clear edge area film-coated base layer upper end, the rear end of clear edge area photovoltaic front plate, clear edge area film-coated base layer and clear edge area top film-coated component is connected with photoelectric area photovoltaic mechanism. By the above-mentioned mode, the self-cleaning of photovoltaic module front plate can be realized.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, specifically to a self-cleaning photovoltaic module front panel. Background Technology

[0002] As a crucial component of clean energy, photovoltaic (PV) power generation is seeing its application scale expand rapidly. The power generation efficiency and lifespan of PV modules directly affect the power plant's revenue. In actual operation, dust, pollen, bird droppings, and other pollutants inevitably accumulate on the surface of the PV module's front panel. These pollutants are primarily visible, larger than 10 nanometers, and they significantly block and scatter sunlight, leading to a decrease in module transmittance and a loss of power generation, sometimes exceeding 10%. Furthermore, long-term adhesion of organic pollutants corrodes the module's surface materials, accelerating module aging and shortening its lifespan.

[0003] Existing technologies have made many improvements to the front panel of photovoltaic modules. For example, Chinese patent CN219246689U discloses a photovoltaic front panel, which includes a protective layer, at least one support layer, and an adhesive layer. The protective layer contains an ultraviolet absorber. The adhesive layer is used to connect the protective layer and the support layer, as well as to connect two adjacent support layers. The multi-layer structure can improve the mechanical properties and weather resistance of the photovoltaic front panel, and the ultraviolet absorber can reduce the possibility of damage, thereby improving the service life of the photovoltaic front panel.

[0004] However, in practical applications, it is still impossible to avoid external dust adhering to the photovoltaic front panel. Dust blocks the photovoltaic area and affects power generation, thereby reducing power generation efficiency and service life. It requires manual cleaning at regular intervals, which is costly and also affects the overall use of the equipment.

[0005] Based on this, the present invention designs a self-cleaning photovoltaic module front panel to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a self-cleaning photovoltaic module front panel.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A self-cleaning photovoltaic module front panel includes a photovoltaic mechanism in the photoelectric zone and a photovoltaic mechanism in the edge-cleaning zone. The photovoltaic mechanism in the photoelectric zone is used to receive sunlight and generate electricity, while the photovoltaic mechanism in the edge-cleaning zone is used to achieve self-cleaning of dust and water droplets. The photovoltaic structure in the Qingbian area includes a photovoltaic front panel, a coated base layer, and a top coated component. The upper end of the photovoltaic front panel is fixedly connected to the coated base layer, and the rear ends of the photovoltaic front panel and the coated base layer are connected to the photovoltaic structure in the photovoltaic area. The top coating assembly in the edge clearing area includes a high-level coating top layer and a low-level coating top layer in the edge clearing area. The lower ends of the high-level coating top layer and the low-level coating top layer in the edge clearing area are fixedly connected to the coating base layer in the edge clearing area. The front end of the high-level coating top layer in the edge clearing area is fixedly connected to the rear end of the low-level coating top layer in the edge clearing area. The rear end of the high-level coating top layer in the edge clearing area is connected to the front end of the photovoltaic structure in the photovoltaic area.

[0008] Furthermore, multiple sets of equidistant micron-sized grooves are formed on the upper end of the coating substrate in the edge clearing area. The height of the micron-sized grooves in the edge clearing area is 1-5 microns, and the width is 5-10 microns.

[0009] Furthermore, the base material of the coating in the clearing area is silicon dioxide.

[0010] Furthermore, the height of the top layer of the high-order coating in the edge clearing area is 200 micrometers, and the height of the top layer of the low-order coating in the edge clearing area is 100 micrometers. Multiple sets of equally spaced nano-etched grooves are formed on the top layer of the high-order coating in the edge clearing area and the top layer of the low-order coating in the edge clearing area.

[0011] Furthermore, the height of the nano-etched top layer groove in the clear edge area is 100-150 nanometers, and the width is 100-300 nanometers.

[0012] Furthermore, the photovoltaic structure in the photovoltaic zone includes a photovoltaic front panel, a photovoltaic coating base layer, and a photovoltaic coating top layer. The upper end of the photovoltaic front panel is fixedly connected to the photovoltaic coating base layer, and the upper end of the photovoltaic coating base layer is fixedly connected to the photovoltaic coating top layer. The front end of the photovoltaic front panel is fixedly connected to the rear end of the photovoltaic front panel in the edge clearing zone. The rear ends of the edge clearing coating base layer and the edge clearing high-level coating top layer are fixedly connected to the front ends of the photovoltaic coating base layer and the photovoltaic coating top layer.

[0013] Furthermore, multiple sets of equidistantly distributed nano-grooves are formed on the upper part of the top layer of the photoelectric region coating. The height of the nano-grooves is 5-10 nanometers and the width is 10-20 nanometers.

[0014] Furthermore, the base layer of the photoelectric region coating is pure phase titanium dioxide, and the top layer of the photoelectric region coating is a nitrogen-doped titanium dioxide layer.

[0015] Compared with the prior art, the advantages of this utility model are as follows: 1. The nano-engraved grooves on the top layer of the high-level coating in the edge cleaning area and the top layer of the low-level coating in the edge cleaning area can prevent dust and water droplets from adhering to the top coating component of the edge cleaning area. 2. The photoelectric area nano-grooves on the top layer of the photoelectric area coating can prevent dust and water droplets from adhering to the surface. At the same time, the top layer of the photoelectric area coating is a nitrogen-doped titanium dioxide layer, which can be activated to catalyze the decomposition of dust under sunlight. 3. The top of the top layer of the photoelectric zone coating, the top layer of the high-level coating in the edge cleaning zone, and the top layer of the low-level coating in the edge cleaning zone are distributed in a stepped manner from high to low, which allows dust and water droplets to slide off along the steps, achieving a self-cleaning effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the front panel of a self-cleaning photovoltaic module according to the present invention; Figure 2 This is a top view of the front panel of a self-cleaning photovoltaic module according to the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 This is a partial structural diagram of the front panel of a self-cleaning photovoltaic module according to the present invention. Figure 1 ; Figure 5 This is a partial structural diagram of the front panel of a self-cleaning photovoltaic module according to the present invention. Figure 2 ; Figure 6 This is a partial structural diagram of the front panel of a self-cleaning photovoltaic module according to the present invention. Figure 3 .

[0018] The labels in the diagram represent: 1. Photovoltaic structure in the photovoltaic zone; 11. Photovoltaic front panel in the photovoltaic zone; 12. Coated base layer in the photovoltaic zone; 13. Top layer of coating in the photovoltaic zone; 14. Nanoscale groove in the photovoltaic zone; 2. Photovoltaic structure in the edge cleaning zone; 21. Photovoltaic front panel in the edge cleaning zone; 22. Coated base layer in the edge cleaning zone; 23. Top coated component in the edge cleaning zone; 231. Top layer of high-level coating in the edge cleaning zone; 232. Top layer of low-level coating in the edge cleaning zone; 25. Micrometer-etched groove in the edge cleaning zone; 26. Nanoscale-etched groove in the top layer of the edge cleaning zone. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] The terms "left," "right," "front," "back," "up," and "down" used in the following description are oriented from the perspective of a top-down view.

[0021] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-6 A self-cleaning photovoltaic module front panel includes a photovoltaic mechanism 1 in the photoelectric zone and a photovoltaic mechanism 2 in the edge cleaning zone. The photovoltaic mechanism 1 and the photovoltaic mechanism 2 are connected. The photovoltaic mechanism 1 in the photoelectric zone is used to receive sunlight and generate electricity, and the photovoltaic mechanism 2 in the edge cleaning zone is used to achieve self-cleaning of dust and water droplets.

[0022] The photovoltaic structure 2 in the clearing area includes a front photovoltaic panel 21, a coating base layer 22, and a top coating component 23. The coating base layer 22 is fixedly connected to the upper end of the front photovoltaic panel 21, and the top coating component 23 is connected to the upper end of the coating base layer 22. The rear ends of the front photovoltaic panel 21, the coating base layer 22, and the top coating component 23 are connected to the photovoltaic structure 1 in the photovoltaic area.

[0023] The top coating assembly 23 of the edge cleaning area includes a high-level coating top layer 231 and a low-level coating top layer 232 in the edge cleaning area. The lower ends of the high-level coating top layer 231 and the low-level coating top layer 232 in the edge cleaning area are fixedly connected to the coating base layer 22 in the edge cleaning area. The front end of the high-level coating top layer 231 in the edge cleaning area is fixedly connected to the rear end of the low-level coating top layer 232 in the edge cleaning area. The rear end of the high-level coating top layer 231 in the edge cleaning area is connected to the front end of the photovoltaic mechanism 1 in the photovoltaic area.

[0024] The material of the edge cleaning area coating base layer 22 is silicon dioxide, and multiple sets of equidistantly distributed edge cleaning area micron-sized engraving grooves 25 are opened on the upper end of the edge cleaning area coating base layer 22.

[0025] The height of the micron-etched groove 25 in the edge clearing area is 1-5 microns, and the width is 5-10 microns.

[0026] The height of the high-level coating top layer 231 in the edge clearing area is 200 micrometers, and the height of the low-level coating top layer 232 in the edge clearing area is 100 micrometers. Multiple sets of equally spaced nano-etched top layer grooves 26 are formed on the high-level coating top layer 231 and the low-level coating top layer 232 in the edge clearing area.

[0027] The material of the top layer 231 of the high-grade coating in the clearing area is silicon dioxide or aluminum oxide.

[0028] The height of the nano-etched top layer groove 26 in the clear edge area is 100-150 nanometers, and the width is 100-300 nanometers.

[0029] The photovoltaic structure 1 in the photovoltaic zone includes a photovoltaic front panel 11, a photovoltaic coating base layer 12, and a photovoltaic coating top layer 13. The photovoltaic coating base layer 12 is fixedly connected to the upper end of the photovoltaic front panel 11, and the photovoltaic coating top layer 13 is fixedly connected to the upper end of the photovoltaic coating base layer 12. The front end of the photovoltaic front panel 11 is fixedly connected to the rear end of the photovoltaic front panel 21 in the edge cleaning zone. The rear ends of the edge cleaning coating base layer 22 and the edge cleaning high-level coating top layer 231 are fixedly connected to the front ends of the photovoltaic coating base layer 12 and the photovoltaic coating top layer 13.

[0030] The base layer 12 of the photoelectric zone coating is pure phase titanium dioxide. The pure phase titanium dioxide layer fills the microscopic defects on the glass surface, provides a flat substrate, and reduces light scattering.

[0031] The top layer 13 of the photoelectric region coating is a nitrogen-doped titanium dioxide layer, which can be activated to catalytically decompose dust under green light with a wavelength of 550nm. Multiple sets of equidistantly distributed photoelectric region nano-scribing grooves 14 are formed on the upper end of the top layer 13 of the photoelectric region coating.

[0032] The photoelectric region nano-grooves 14 have a height of 5-10 nanometers and a width of 10-20 nanometers. The photoelectric region nano-grooves 14 are used to adsorb water and allow water droplets to spread out.

[0033] The tops of the top layer 13 of the photoelectric zone coating, the top layer 231 of the high-level coating in the edge cleaning zone, and the top layer 232 of the low-level coating in the edge cleaning zone are distributed in a stepped manner from high to low.

[0034] In this invention, the photovoltaic mechanism 1 in the photovoltaic zone and the photovoltaic mechanism 2 in the edge cleaning zone are installed at an angle on the photovoltaic bracket. The photovoltaic front panel 11 in the photovoltaic zone receives sunlight and generates electricity, while the photovoltaic front panel 21 in the edge cleaning zone does not generate electricity. Over time, dust will adhere to the top coating layer 13 in the photovoltaic zone and the top coating component 23 in the edge cleaning zone. When dust particles fall on the surface of the top coating layer 13 in the photovoltaic zone, since the top coating layer 13 in the photovoltaic zone is a titanium dioxide layer containing nitrogen, it will generate a strong oxidizing substance under sunlight, which will decompose the organic pollutants in the dust particles into small molecules such as carbon dioxide and water. When these organic pollutants are decomposed, they are no longer sticky pollutants and will be carried by the decomposed water molecules, sliding off the surface of the tilted top coating layer 13 in the photovoltaic zone. As for inorganic dust particles, such as mud and sand, due to the presence of the nano-grooves 14 in the photoelectric area, these inorganic dust particles will not adhere to the surface of the top layer 13 of the photoelectric area coating. Some of the inorganic dust particles will slide off along with the water molecules decomposed in the above steps. When rainwater falls on the surface of the top layer 13 of the photoelectric zone coating, due to the presence of the nano-grooves 14 in the photoelectric zone, the rainwater will not form water droplets, but will spread evenly into a very thin water film. This water film will penetrate into the nanopores on the surface of the top layer 13 of the photoelectric zone coating and float up those loosely attached inorganic dust particles, and then wash them away. Because the high-level coating top layer 231 and the low-level coating top layer 232 of the edge-cleaning area have nano-etched grooves 26, a large amount of air can be trapped on the high-level coating top layer 231 and the low-level coating top layer 232 of the edge-cleaning area to resist the static pressure of water droplets and form an air cushion. Meanwhile, 27 is used to stably trap nanoscale air, preventing water droplets from penetrating the coating base layer 22 of the edge-cleaning area under pressure. When water droplets, rainwater droplets, or water molecules from decomposition fall onto this hierarchical structure, the water droplets are actually suspended in the edge-cleaning area. On the air film at the top of the micron structure formed by the nano-etched top layer groove 26, the actual contact area between the water droplet and the surface of the high-order coating top layer 231 and the low-order coating top layer 232 in the edge clearing area is very small. When the water droplet slides from the high-order coating top layer 231 to the low-order coating top layer 232 in the edge clearing area, since the high-order coating top layer 231 is higher than the low-order coating top layer 232 in the edge clearing area, the water droplet can release some potential energy and increase the sliding speed. Therefore, the water droplet can easily slide off the low-order coating top layer 232 in the edge clearing area. When dust particles fall onto the surfaces of the high-level coating top layer 231 and the low-level coating top layer 232 in the edge cleaning area, the dust particles mainly come into contact with the aforementioned air film, rather than directly adhering to the solid structures on the surfaces of the high-level coating top layer 231 and the low-level coating top layer 232 in the edge cleaning area. Therefore, when water droplets roll off, the water droplets only come into contact with the top of the air film and the dust. Due to the surface tension of the water droplets, the water droplets will carry away the dust on top, achieving a self-cleaning effect.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-cleaning photovoltaic module front panel, comprising a photovoltaic mechanism in the photoelectric zone (1) and a photovoltaic mechanism in the edge-cleaning zone (2), wherein the photovoltaic mechanism in the photoelectric zone (1) is used to receive sunlight and generate electricity, and the photovoltaic mechanism in the edge-cleaning zone (2) is used to achieve self-cleaning of dust and water droplets, characterized in that: The photovoltaic structure (2) in Qingbian District includes a photovoltaic front panel (21), a coating base layer (22), and a top coating component (23). The upper end of the photovoltaic front panel (21) is fixedly connected to the coating base layer (22). The rear ends of the photovoltaic front panel (21) and the coating base layer (22) are connected to the photovoltaic structure (1). The top coating assembly (23) of the edge clearing area includes a high-level coating top layer (231) and a low-level coating top layer (232) of the edge clearing area. The lower ends of the high-level coating top layer (231) and the low-level coating top layer (232) of the edge clearing area are fixedly connected to the coating base layer (22) of the edge clearing area. The front end of the high-level coating top layer (231) of the edge clearing area is fixedly connected to the rear end of the low-level coating top layer (232) of the edge clearing area. The rear end of the high-level coating top layer (231) of the edge clearing area is connected to the front end of the photovoltaic mechanism (1) of the photovoltaic area.

2. The self-cleaning photovoltaic module front panel according to claim 1, characterized in that, Multiple sets of equidistant micron-sized engraving grooves (25) are opened on the upper end of the coating base layer (22) of the edge clearing area. The height of the micron-sized engraving grooves (25) of the edge clearing area is 1-5 microns and the width is 5-10 microns.

3. The self-cleaning photovoltaic module front panel according to claim 2, characterized in that, The material of the coating base layer (22) in the clearing area is silicon dioxide.

4. The self-cleaning photovoltaic module front panel according to claim 1, characterized in that, The height of the high-level coating top layer (231) in the edge clearing area is 200 micrometers, and the height of the low-level coating top layer (232) in the edge clearing area is 100 micrometers. Multiple sets of equally spaced nano-etched top layer grooves (26) are formed on the high-level coating top layer (231) and the low-level coating top layer (232) in the edge clearing area.

5. The self-cleaning photovoltaic module front panel according to claim 4, characterized in that, The height of the nano-etched top layer groove (26) in the clear edge area is 100-150 nanometers and the width is 100-300 nanometers.

6. The self-cleaning photovoltaic module front panel according to claim 1, characterized in that, The photovoltaic structure (1) in the photovoltaic zone includes a photovoltaic front panel (11), a photovoltaic coating base layer (12), and a photovoltaic coating top layer (13). The upper end of the photovoltaic front panel (11) is fixedly connected to the photovoltaic coating base layer (12), and the upper end of the photovoltaic coating base layer (12) is fixedly connected to the photovoltaic coating top layer (13). The front end of the photovoltaic front panel (11) is fixedly connected to the rear end of the photovoltaic front panel (21) in the clearing zone. The rear ends of the clearing zone coating base layer (22) and the clearing zone high-level coating top layer (231) are fixedly connected to the front ends of the photovoltaic coating base layer (12) and the photovoltaic coating top layer (13).

7. The self-cleaning photovoltaic module front panel according to claim 6, characterized in that, Multiple sets of equidistantly distributed photoelectric region nano-grooves (14) are formed on the top layer of the photoelectric region coating (13). The height of the photoelectric region nano-grooves (14) is 5-10 nanometers and the width is 10-20 nanometers.

8. The self-cleaning photovoltaic module front panel according to claim 7, characterized in that, The base layer (12) of the photoelectric zone coating is pure phase titanium dioxide, and the top layer (13) of the photoelectric zone coating is a nitrogen-doped titanium dioxide layer.

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