Anti-glare photovoltaic panel
By using anti-glare glass and double-sided solar cells in the photovoltaic panel and setting cutouts in the frame, the problem of balancing anti-glare and power generation efficiency is solved, achieving high-efficiency anti-glare and high-efficiency power generation in the photovoltaic panel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘江
- Filing Date
- 2025-07-28
- Publication Date
- 2026-05-29
AI Technical Summary
Existing photovoltaic panels struggle to balance glare reduction and power generation efficiency. Anti-glare glass reduces power generation efficiency, while frame design leads to dust accumulation and cleaning difficulties, all of which affect power generation efficiency.
Anti-glare glass is used as the front glass, and power is generated by double-sided solar cells. Cutouts are set at the ends and middle of the frame to facilitate the discharge of sewage, ash and water, ensuring the surface of the photovoltaic panel is clean.
It improves the anti-glare effect, compensates for the loss of power generation efficiency, and ensures that the photovoltaic panel minimizes dust accumulation and maintains high power generation efficiency when used outdoors.
Smart Images
Figure CN224306205U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic panel technology, and in particular to anti-glare photovoltaic panels. Background Technology
[0002] Photovoltaic panels, also known as photovoltaic modules, are devices that convert solar energy into electrical energy. They consist of laminated components (solar cells, encapsulant film, glass, backsheet (or back glass), etc.) and frames. The glass is mostly ordinary coated anti-reflective glass, which easily produces specular reflection under sunlight, causing glare. Some manufacturers, considering this issue, have switched to rolled coarse-grained anti-glare glass, but this has led to a significant reduction in the photovoltaic panel's power generation efficiency.
[0003] Meanwhile, the frame A-side (front) is generally covered by raised aluminum alloy around the perimeter, which serves to securely wrap the internal laminates of the product. However, this overall wrapping makes it easy for dust and rainwater to accumulate on the product surface. In other words, dirt and rainwater are blocked by the front of the frame and are not easy to flow out. The dirt blocks and affects the power generation of the internal cells of the photovoltaic panel, resulting in a further reduction in power generation efficiency. Moreover, after years of accumulation, it is more inconvenient to clean and may even require manual scrubbing to remove dirt. Utility Model Content
[0004] The purpose of this application is to address the problem in existing photovoltaic panels that cannot simultaneously achieve both anti-glare and power generation efficiency. Therefore, this application provides an anti-glare photovoltaic panel that improves anti-glare performance by using anti-glare glass as the front glass of the photovoltaic panel, and improves power generation efficiency through double-sided power generation and frame improvements.
[0005] This application provides an anti-glare photovoltaic panel, including:
[0006] Front glass;
[0007] The back glass and the front glass are arranged opposite to each other and form a double-layer structure;
[0008] Multiple bifacial solar cells, wherein the multiple bifacial solar cells are arranged in an array within the double-layer structure; and
[0009] A border, which covers the circumferential direction of the double-layer structure, and has a front and bottom surface that are oppositely disposed and form a clamping structure, wherein the double-layer structure is clamped in the clamping structure; and...
[0010] The front glass is anti-glare glass;
[0011] The frame includes two long frames and two short frames arranged opposite each other. One of the long frames and one of the short frames has a first cut at its front end, and both the long frames and the short frames have a second cut in the middle of their front sides. The first cut and the second cut allow the surface of the front glass away from the back glass to communicate with the outside of the frame.
[0012] By adopting the above technical solution, the anti-glare effect is improved by using anti-glare glass as the front glass of the photovoltaic panel. At the same time, by using double-sided solar cells for double-sided power generation, the reduced power generation efficiency caused by the front anti-glare glass can be compensated, thereby ensuring the overall power generation efficiency. Furthermore, by setting a first cut and a second cut at the end and middle of the frame, and by making the front glass (i.e., the surface opposite to the back glass) connected to the outside of the frame through the first and second cuts, the ability to drain dirt, dust, and water is realized. This ensures that the photovoltaic panel can be used outdoors with maximum purification of the surface dust. Dust can slide off the surface of the photovoltaic panel with rainwater or during maintenance and cleaning, reducing the accumulation on the surface that may obscure the internal solar cells and ensuring the power generation efficiency of the photovoltaic panel.
[0013] In some embodiments, the reflectivity of the front glass is not greater than 1%, the gloss is 11-12 GU, the haze is 9-12%, and the surface of the front glass opposite to the back glass is covered with a hydrophobic antireflective coating layer.
[0014] The back glass has a light transmittance of 90-95%.
[0015] By employing the above technical solution, the anti-glare effect is ensured by using front glass with a reflectivity of no more than 1%, a gloss of 11-12 GU, and a haze of 9-12%, so that the front of the photovoltaic panel will basically not produce glare. Furthermore, by covering the front glass with an anti-reflective coating layer, the light transmittance of the front glass is improved, thereby increasing the power generation efficiency. Its hydrophobicity allows rainwater and dew to quickly slide off the front of the photovoltaic panel, reducing surface contamination and further improving power generation efficiency. At the same time, the high light transmittance of the back glass can improve the absorption of scattered light by the photovoltaic panel, thereby further improving the power generation efficiency.
[0016] In some embodiments, the anti-glare glass is a textured tempered glass, and the hydrophobic anti-reflective coating layer is formed by simultaneously coating and tempering the textured tempered glass with a hydrophobic anti-reflective coating liquid.
[0017] By adopting the above technical solution, the hydrophobic antireflective coating layer can be embedded in the recess of the front glass, thereby preventing dust accumulation on its surface and effectively protecting the front glass.
[0018] In some embodiments, the surface of the back glass opposite to the front glass is covered with an anti-reflective coating.
[0019] In some embodiments, the width of the first cut and the second cut is 6-8 mm.
[0020] In some embodiments, the end splicing surfaces of the long frame and the short frame are adapted bevels, and the first cut includes a first side parallel to the bevel and a second side perpendicular to and connected to the side of the corresponding long frame or the short frame.
[0021] In some embodiments, the ends of the long frame and the short frame are joined at a 45° angle.
[0022] In some embodiments, the first cutout is provided at both ends of the front side of the long frame;
[0023] Two second cutouts are provided in the middle of the front of both the long frame and the short frame;
[0024] The two second cuts provided on the long frame are evenly distributed along the length direction of the long frame;
[0025] The two second cuts on the short frame are symmetrically distributed about the center line of the short frame, and the distance between them is not less than 2 / 3 of the length of the short frame.
[0026] Other features and corresponding beneficial effects of this application will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in this application. Attached Figure Description
[0027] Figure 1(a) is a front structural diagram of this application;
[0028] Figure 1(b) is a schematic diagram of the rear structure of this application;
[0029] Figure 2 This is a partial structural diagram of this application;
[0030] Figure 3 This is a partial schematic diagram of the long border of this application.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Front glass; 2. Back glass; 3. Frame;
[0033] 10. Long border; 11. Frame; 111. Extension; 12. Card slot;
[0034] 20. Short bezel;
[0035] 30. First incision; 31. First side view; 32. Second side view;
[0036] 40. Second incision. Detailed Implementation
[0037] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with preferred embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0038] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more. Unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0040] Please see Figure 1(a)-Figure 3 Figure 1(a) is a schematic diagram of the front structure of this application; Figure 1(b) is a schematic diagram of the back structure of this application. Figure 2This is a partial structural diagram of this application; Figure 3 This is a partial schematic diagram of the long border 10 of this application.
[0041] This application provides an anti-glare photovoltaic panel, which is particularly suitable for scenarios such as cities, airports, water surfaces, and seas where there are requirements for light pollution reflection and power generation efficiency and revenue.
[0042] This photovoltaic panel includes a front glass 1, a back glass 2, multiple bifacial solar cells, and a frame 3.
[0043] The front glass 1 and the back glass 2 are arranged opposite each other to form a double-layer structure. Multiple bifacial solar cells are arranged in an array within the double-layer structure. The frame 3 covers the circumference of the double-layer structure and has a front and bottom surface that are arranged opposite each other to form a clamping structure. The double-layer structure is clamped in the clamping structure, thus forming a bifacial photovoltaic panel.
[0044] Furthermore, the front glass 1 of this photovoltaic panel is anti-glare glass. Preferably, its reflectivity is no more than 1%, its gloss is 11-12 GU, and its haze is 9-12%, so that the front of the photovoltaic panel will basically not produce glare. Moreover, the reflected light on the front of this photovoltaic panel is not visible to the naked eye when tested at a 60-degree angle. Preferably, the front glass 1 is 3.2mm thick to ensure the strength of the photovoltaic panel.
[0045] In one specific embodiment, the front glass 1 has a reflectivity of 1%, a gloss of 11 GU, and a haze of 10%.
[0046] It should be noted that although the front glass 1 significantly improves its anti-glare effect through various parameters, especially the increase in haze, it also results in a power loss of about 4%.
[0047] Therefore, by using bifacial cells to generate electricity from both sides, this photovoltaic panel can compensate for the reduced power generation efficiency caused by the front anti-glare glass, thus ensuring overall power generation efficiency compared to using only single-sided power generation.
[0048] Furthermore, to ensure power generation efficiency, the surface of the front glass 1 facing away from the back glass 2 is also covered with a hydrophobic anti-reflective coating layer. Its anti-reflective properties can improve the light transmittance of the front glass 1, thereby improving the power generation efficiency of the photovoltaic panel. Its hydrophobic properties can allow rainwater, dew, etc. to quickly slide off from the front of the photovoltaic panel, thereby ensuring the cleanliness of the photovoltaic panel surface, reducing the accumulation on the surface that may obscure the internal cells of the product, and further ensuring its power generation efficiency.
[0049] In one embodiment, the back glass 2 has a light transmittance of 90-95%, such as 90%, 92%, or 95%, which can improve the absorption of scattered light by the photovoltaic panel, thereby further improving power generation efficiency. Preferably, the back glass 2 is 3.2mm thick. This method is more efficient than the 2.0mm semi-tempered glass used on the back of ordinary double-glass panels, and increases the light transmittance on the reverse side by 1.5%, thus improving the overall efficiency performance of the product.
[0050] In one embodiment, the surface of the back glass 2 opposite to the front glass 1 is covered with an anti-reflective coating layer, thereby further improving light transmittance and power generation efficiency.
[0051] It should be noted that the power generation efficiency of photovoltaic panels is also related to the cleanliness of their surface. Conventional photovoltaic panels have raised and completely covered front edges, making it difficult for wastewater to slide off freely. Instead, it relies on evaporation to dry, which easily leaves large stains and watermarks on the edges of the edges, affecting power generation efficiency.
[0052] Therefore, in one embodiment, the frame 3 includes two long frames 10 and two short frames 20 arranged opposite to each other. One of the long frames 10 and the short frames 20 has a first cut 30 at its front end, and both the long frames 10 and the short frames 20 have a second cut 40 in the middle of their front sides. The first cut 30 and the second cut 40 allow the surface of the front glass 1 away from the back glass 2 to communicate with the outside of the frame 3, so as to realize the drainage of sewage, dust and water through the cuts. This ensures that the photovoltaic panel can be purified to the maximum extent when used outdoors, so that the surface dust can be removed by rainwater, maintenance cleaning water, etc., reducing the shading of the internal cells of the photovoltaic panel and ensuring the power generation efficiency of the photovoltaic panel.
[0053] Furthermore, only one of the long frame 10 and the short frame 20 has a first cut 30 at its front end, so that one side of the top corner of the whole (i.e., the laminate) formed by the front glass 1, the back glass 2 and the double-sided battery sheet is wrapped, while the other side is exposed (to achieve the function of draining sewage, dust and water), thereby ensuring the wrapping and pressure resistance stability of the frame 3.
[0054] In one embodiment, the anti-glare glass is a textured tempered glass, and the hydrophobic anti-reflective coating layer is formed by simultaneously coating and tempering the textured tempered glass with a hydrophobic anti-reflective coating liquid.
[0055] It should be noted that the surface of textured tempered glass is an uneven surface with fine textured particles, which creates diffuse reflection and thus achieves anti-glare. In other words, textured tempered glass is a type of anti-glare glass.
[0056] The front glass of this photovoltaic panel can first undergo micron-level etching and cleaning of the original glass sheet, and then be sprayed with a hydrophobic anti-reflective coating liquid. The glass and the coating liquid are then tempered together. The etching process creates a certain degree of roughness (i.e., a velvety surface) on the originally smooth glass surface, thus providing an anti-glare structure and low reflection and high light transmittance. After tempering, the coating liquid also has self-cleaning properties and improves light transmittance, thereby improving the product's conversion efficiency. Furthermore, the hydrophobic anti-reflective coating layer can be embedded in the recesses of the front glass 1, thereby preventing dust accumulation on its surface and effectively protecting the front glass 1, which is different from ordinary photovoltaic coated glass or ordinary etched glass.
[0057] Preferably, the back glass is also made of velour tempered glass, but since there is less light on the back, its anti-glare effect can be lower than that of the front glass, thereby controlling costs.
[0058] In one embodiment, the width of the first cut 30 and the second cut 40 is 6-8mm, such as 6mm, 7.4mm, 8mm, etc., which can ensure the sewage discharge, ash discharge and drainage capacity, reduce the impact on the strength of the frame 3, and ensure the wrapping of the laminated components.
[0059] In one embodiment, the end splicing surfaces of the long frame 10 and the short frame 20 are adapted bevels, and the first cut 30 includes a first side surface 31 and a second side surface 32.
[0060] The first side 31 is parallel to the inclined plane, taking into account both the width of the cut entrance (i.e., the sewage, ash and water discharge capacity) and the good wrapping of the laminate by the frame 3.
[0061] The second side 32 is perpendicular to and connected to the side of the corresponding long frame 10 or short frame 20, thereby increasing the cutout outlet cross section and further improving the sewage discharge, ash discharge and drainage capacity.
[0062] In one embodiment, the ends of the long frame 10 and the short frame 20 are joined at 45°, which is convenient to manufacture and provides good wrapping of the laminate.
[0063] In one embodiment, the long frame 10 has a first cut 30 at both ends of the front side, which further improves the photovoltaic panel's ability to discharge sewage, ash and water. Furthermore, the first cut 30 is not provided on the short frame 20, which can ensure good wrapping of the laminate by both the long frame 10 and the short frame 20.
[0064] In one embodiment, two second cutouts 40 are provided in the middle of the front side of both the long border 10 and the short border 20.
[0065] The two second cutouts 40 on the long border 10 are evenly distributed along the length of the long border 10.
[0066] The two second cuts 40 on the short border 20 are symmetrically distributed about the center line of the short border 20, and the distance between them is not less than 2 / 3 of the length of the short border 20.
[0067] The frame 3 is designed with a single bottom edge 4-hole channel and a double side 8-hole channel for ash removal and drainage. The 4 holes (6-8mm) can increase the drainage speed by 30% compared to the 2 holes at the end, and can maximize the wrapping and compressive stability of the product frame 3. It reduces dust accumulation without affecting the strength, while improving the sewage and ash removal and drainage capacity, preventing blockage, increasing the water discharge volume and making it easier to flush away accumulated dust.
[0068] In one embodiment, the two sides of the second cut 40 are arranged parallel to each other and parallel to the long frame 10, which facilitates manufacturing.
[0069] In one embodiment, the first cut 30 and the second cut 40 are formed by punching or milling to ensure the stability and strength of the front of the frame 3, which is not afraid of wind pressure from both directions. At the same time, it improves the sewage and drainage capacity, increases the allowable margin for dust blockage, increases the flood discharge capacity, and makes sewage and drainage smoother. Both long and short sides can be used, and the four-sided frame 3 can be made of composite materials such as aluminum alloy and composite fiberglass frame.
[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. An anti-glare photovoltaic panel, characterized in that, include: Front glass; The back glass and the front glass are arranged opposite to each other and form a double-layer structure; Multiple bifacial solar cells, wherein the multiple bifacial solar cells are arranged in an array within the double-layer structure; and A border, which covers the circumferential direction of the double-layer structure, and has a front and bottom surface that are oppositely disposed and form a clamping structure, wherein the double-layer structure is clamped in the clamping structure; and... The front glass is anti-glare glass; The frame includes two long frames and two short frames arranged opposite each other. One of the long frames and one of the short frames has a first cut at its front end, and both the long frames and the short frames have a second cut in the middle of their front sides. The first cut and the second cut allow the surface of the front glass away from the back glass to communicate with the outside of the frame.
2. The anti-glare photovoltaic panel according to claim 1, characterized in that, The reflectivity of the front glass is no greater than 1%, the gloss is 11-12 GU, the haze is 9-12%, and the surface of the front glass opposite to the back glass is covered with a hydrophobic antireflective coating layer. The back glass has a light transmittance of 90-95%.
3. The anti-glare photovoltaic panel according to claim 2, characterized in that, The anti-glare glass is a textured tempered glass, and the hydrophobic anti-reflective coating layer is formed by simultaneously coating and tempering the textured tempered glass with a hydrophobic anti-reflective coating liquid.
4. The anti-glare photovoltaic panel according to claim 1, characterized in that, The surface of the back glass opposite to the front glass is covered with an anti-reflective coating.
5. The anti-glare photovoltaic panel according to claim 1, characterized in that, The width of the first incision and the second incision is 6-8 mm.
6. The anti-glare photovoltaic panel according to claim 1, characterized in that, The end splicing surfaces of the long frame and the short frame are adapted bevels, and the first cut includes a first side parallel to the bevel and a second side perpendicular to and connected to the side of the corresponding long frame or the short frame.
7. The anti-glare photovoltaic panel according to claim 6, characterized in that, The ends of the long frame and the short frame are joined at a 45° angle.
8. The anti-glare photovoltaic panel according to claim 1, characterized in that, The first cut is provided at both ends of the front side of the long frame; Two second cutouts are provided in the middle of the front of both the long frame and the short frame; The two second cuts provided on the long frame are evenly distributed along the length direction of the long frame; The two second cuts on the short frame are symmetrically distributed about the center line of the short frame, and the distance between them is not less than 2 / 3 of the length of the short frame.