Frame profile and photovoltaic module

Abstract

The utility model relates to the technical field of photovoltaic, in particular to a frame profile and a photovoltaic module, the frame profile comprises a top support plate, a bottom support plate and a connecting plate, the top support plate and the bottom support plate are arranged in parallel, and the connecting plate is located on the same side of the top support plate and the bottom support plate and connects the top support plate and the bottom support plate; the bottom supporting plate comprises a bottom plate, a first coating layer and a second coating layer; the first coating layer is arranged on the upper surface of the bottom plate, and the second coating layer is arranged on the lower surface of the bottom plate; wherein the first coating layer and the second coating layer are both of a woven structure. The first coating layer and the second coating layer are arranged on the upper surface and the lower surface of the bottom plate, so that the structural strength and the rigidity of the bottom plate can be effectively improved, an additional supporting effect is provided, and the situation that the bottom supporting plate deforms due to a load of the photovoltaic module is effectively reduced; and the tear resistance of the edge of the bottom supporting plate can be enhanced, generation and expansion of cracks are delayed, and the situation that the bottom supporting plate is torn is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a frame profile and a photovoltaic module. Background Technology

[0002] With the development of photovoltaic technology, solar energy has been widely promoted as a green, environmentally friendly, and renewable energy source. Photovoltaic modules, as the core component of solar power generation systems, have received widespread attention.

[0003] A photovoltaic frame typically includes an A-side, a B-side, and a C-side. Sides A and C are arranged parallel to each other, while side B is located on the same side as sides A and C and connects them. Side C is located at the bottom. In related technologies, solar frames are generally made of extruded aluminum profiles. However, the structural strength and compressive strength of this material are relatively low. Under snow loads, side C of the solar frame is prone to deformation under pressure, and under wind loads, side C is easily torn.

[0004] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0005] This application provides a frame profile and a photovoltaic module to solve or alleviate one or more of the technical problems mentioned above.

[0006] As a first aspect of the embodiments of this application, this application provides a frame profile, including a top support plate, a bottom support plate, and a connecting plate. The top support plate and the bottom support plate are arranged parallel to each other, and the connecting plate is located on the same side of the top support plate and the bottom support plate and connects the two. The bottom support plate includes a bottom plate, a first covering layer, and a second covering layer. The first covering layer is disposed on the upper surface of the bottom plate, and the second covering layer is disposed on the lower surface of the bottom plate.

[0007] Both the first and second covering layers are woven structures.

[0008] Optionally, the first covering layer and the second covering layer have the same structure, both including a first woven strip and a second woven strip. The number of first woven strips is several, and the first woven strips are arranged along a first direction. The number of second woven strips is several, and the second woven strips are arranged along a second direction. The first woven strips and the second woven strips are interwoven at a preset angle. The first woven strips and the second woven strips form a first arch structure through interweaving. The first arch structure is disposed between at least partially adjacent first woven strips and / or the first arch structure is disposed between at least partially adjacent second woven strips.

[0009] The first direction and the second direction are perpendicular to each other.

[0010] Optionally, the material of the first braided strip is one of glass fiber, carbon fiber, basalt fiber, and aramid fiber; and / or

[0011] The material of the second woven strip is one of glass fiber, carbon fiber, basalt fiber and aramid fiber.

[0012] Optionally, a cavity is formed between the first and second braided strips, the cavity being used to fill a filler.

[0013] Optionally, the filler material is polyurethane resin.

[0014] Optionally, the first covering layer and the second covering layer have the same structure, both including braided rods and third braided strips; the number of braided rods is several, and the braided rods are arranged along a third direction; the number of third braided strips is several, and the third braided strips are arranged along a fourth direction;

[0015] The third braided strip is interwoven around the braided rod at a preset angle, and the third braided strip and the braided rod interweave to form a second arched structure, which is disposed between at least some of the adjacent braided rods;

[0016] Among them, the third direction and the fourth direction are perpendicular to each other.

[0017] Optionally, the cross-section of the braided rod is one of a regular hexagonal structure, a regular pentagonal structure, a regular quadrilateral structure, or an equilateral triangular structure.

[0018] Optionally, the braided rod is made of either fine steel wire or boron fiber.

[0019] Optionally, the first coating layer has a first coating layer on the side away from the base plate; and / or

[0020] The second coating layer has a second coating layer on the side away from the base plate.

[0021] As a second aspect of the present application, the present application provides a photovoltaic module, including: the frame profile described in any of the above.

[0022] The embodiments of this application employing the above-described technical solution may have the following advantages:

[0023] By setting the first and second covering layers on the upper and lower surfaces of the base plate, and the first and second covering layers being woven structures, the structural strength and rigidity of the base plate can be effectively increased, providing additional support and thus effectively reducing the deformation of the base support plate caused by the load on the photovoltaic module; it can also enhance the tear resistance of the base support plate edges, delay the generation and propagation of cracks, and effectively reduce the tearing of the base support plate. Attached Figure Description

[0024] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0025] Figure 1 This is a structural schematic diagram of the frame profile provided in the embodiments of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the first covering layer provided in the embodiments of this application.

[0027] Figure 3 yes Figure 2 Enlarged view of section E in the middle.

[0028] Figure 4 yes Figure 2 A cross-sectional view along the first direction.

[0029] Figure 5 yes Figure 2 A cross-sectional view along the second direction.

[0030] Figure 6 This is a schematic diagram of the structure of the first covering layer provided in another embodiment of this application.

[0031] Figure 7 yes Figure 6 Enlarged view of section F in the middle.

[0032] Figure 8 yes Figure 6 A cross-sectional view along the fourth direction.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Top support plate; 2. Bottom support plate; 21. Base plate; 22. First covering layer; 221. First braided strip; 222. Second braided strip; 223. First arch structure; 224. Cavity; 225. Braided rod; 226. Third braided strip; 227. Second arch structure; 23. Second covering layer; 24. First coating layer; 25. Second coating layer; 3. Connecting plate; A. First direction; B. Second direction; C. Third direction; D. Fourth direction. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. The application will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. It should be understood that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0038] like Figures 1-8 As shown, in a first aspect, embodiments of this application can provide a frame profile, which may include: a top support plate 1, a bottom support plate 2, and a connecting plate 3. The top support plate 1 and the bottom support plate 2 are arranged parallel to each other, and the connecting plate 3 is located on the same side of the top support plate 1 and the bottom support plate 2 and connects the two. The bottom support plate 2 includes a bottom plate 21, a first covering layer 22, and a second covering layer 23. The first covering layer 22 is disposed on the upper surface of the bottom plate 21, and the second covering layer 23 is disposed on the lower surface of the bottom plate 21. The first covering layer 22 and the second covering layer 23 are both woven structures.

[0039] In this embodiment, by setting the first covering layer 22 and the second covering layer 23 on the upper and lower surfaces of the base plate 21, and the first covering layer 22 and the second covering layer 23 being woven structures, the structural strength and rigidity of the base plate 21 can be effectively increased, providing additional support, thereby effectively reducing the deformation of the bottom support plate 2 caused by the load of the photovoltaic module; it can also enhance the tear resistance of the edge of the bottom support plate 2, delay the generation and propagation of cracks, and effectively reduce the tearing of the bottom support plate 2.

[0040] It should be noted that the base plate 21 is located between the first covering layer 22 and the second covering layer 23, and is a sandwich structure design. This structure can disperse and evenly transfer stress, significantly improving the overall bending stiffness and reducing the bending deformation of the bottom support plate 2 (i.e., surface C) under load. Furthermore, the woven structure of the first covering layer 22 and the second covering layer 23 forms a protective area on the upper and lower surfaces of the base plate 21, which allows the bottom support plate 2 to delay the occurrence of local failure when subjected to external impact or shear force.

[0041] It is worth mentioning that the bottom support plate 2 may experience fatigue deformation due to thermal expansion and contraction or mechanical vibration during long-term use. The first covering layer 22 and the second covering layer 23 enable the bottom support plate 2 to have good elastic recovery performance, absorb stress, and reduce fatigue accumulation. At the same time, the surface texture of the woven structure is decorative, improving the appearance quality of the photovoltaic module.

[0042] In an optional embodiment, the first covering layer 22 and the second covering layer 23 have the same structure, both including a first braided strip 221 and a second braided strip 222. The number of first braided strips 221 is several, and the first braided strips 221 are arranged along a first direction A; the number of second braided strips 222 is several, and the second braided strips 222 are arranged along a second direction B; the first braided strips 221 and the second braided strips 222 are interwoven at a preset angle; the first braided strips 221 and the second braided strips 222 form a first arched structure 223 through interweaving, and the first arched structure 223 is arranged between at least partially adjacent first braided strips 221 and / or the first arched structure 223 is arranged between at least partially adjacent second braided strips 222; wherein, the first direction A and the second direction B are perpendicular to each other.

[0043] In this embodiment, the first braided strip 221 and the second braided strip 222 interweave at a preset angle, thereby forming a first covering layer 22 and a second covering layer 23 with a braided structure. The first arched structure 223 is a node formed by the interlacing of the first braided strip 221 and the second braided strip 222 during weaving. When the bottom support plate 2 is subjected to external forces such as tension and shear, the external force is distributed to numerous nodes (i.e., the first arched structure 223), enhancing the stability of the bottom support plate 2 structure. When the bottom support plate 2 is subjected to tensile force, the friction and interaction between the first braided strip 221 and the second braided strip 222 will prevent the first braided strip 221 or the second braided strip 222 from sliding or being pulled out. When the bottom support plate 2 is subjected to bending force, the first braided strip 221 and the second braided strip 222 will squeeze and rub against each other, and the first arched structure 223 will form a resultant force resisting bending. The mutual constraint between the first braided strip 221 and the second braided strip 222 is stronger, which can effectively enhance its bending resistance.

[0044] In an optional embodiment, the material of the first braided strip 221 is one of glass fiber, carbon fiber, basalt fiber and aramid fiber; and / or the material of the second braided strip 222 is one of glass fiber, carbon fiber, basalt fiber and aramid fiber.

[0045] In some embodiments, the base plate 21 is made of one of glass fiber, carbon fiber, basalt fiber and aramid fiber.

[0046] In this embodiment, the above-mentioned materials have excellent tensile and compressive strength, and these materials also have excellent corrosion resistance and anti-aging properties, which improves the weather resistance of photovoltaic modules and can further extend the service life of photovoltaic frames.

[0047] In an optional embodiment, a cavity 224 is formed between the first braided strip 221 and the second braided strip 222, the cavity 224 being used to fill a filler.

[0048] In this embodiment, the filler is filled into the cavity 224, so that the first covering layer 22 and the second covering layer 23 form a uniform and stable woven composite structure, thereby reducing stress concentration and improving the overall strength and rigidity of the first covering layer 22 and the second covering layer 23, making the bottom support plate 2 more resistant to bending, impact and shear forces. In addition, the filler can seal the cavity 224, preventing cracks from propagating between the woven structures, thereby improving fatigue resistance and extending the service life of the frame.

[0049] In an optional embodiment, the filler material is polyurethane resin.

[0050] In this embodiment, polyurethane resin possesses excellent weather resistance and corrosion resistance, effectively preventing the erosion of the bottom support plate 2 by moisture, dust, and chemicals, thus improving the reliability of the photovoltaic module in harsh environments. Furthermore, polyurethane resin exhibits good elasticity and toughness, absorbing some energy when subjected to external impacts, thereby reducing damage to the bottom support plate 2. Simultaneously, in vibrations caused by wind loads or thermal expansion and contraction, polyurethane resin can act as a shock absorber, improving the stability of the photovoltaic module.

[0051] In an optional embodiment, the first covering layer 22 and the second covering layer 23 have the same structure, both including braided rods 225 and third braided strips 226; the number of braided rods 225 is several, and the braided rods 225 are arranged along a third direction C; the number of third braided strips 226 is several, and the third braided strips 226 are arranged along a fourth direction D; the third braided strips 226 are interwoven around the braided rods 225 at a preset angle, and the third braided strips 226 and the braided rods 225 form a second arch structure 227 through interweaving, and the second arch structure 227 is arranged between at least partially adjacent braided rods 225; wherein, the third direction C and the fourth direction D are perpendicular to each other. When the bottom support plate 2 is subjected to external forces such as tension and shear, the external forces will be distributed to numerous nodes (i.e., the second arch structure 227), enhancing the stability of the bottom support plate 2 structure.

[0052] In an optional embodiment, the cross-section of the braided rod 225 is one of a regular hexagonal structure, a regular pentagonal structure, a regular quadrilateral structure, or an equilateral triangular structure.

[0053] In this embodiment, the braided rod 225 and the third braided strip 226 are braided to form the first covering layer 22 and the second covering layer 23. Since the braided rod 225 is a rod-shaped structure, it has higher strength and rigidity, can withstand greater external forces, and enhances the lateral force limit, thereby further enhancing the strength of the bottom support plate 2.

[0054] In an optional embodiment, the braided rod 225 is made of either fine steel wire or boron fiber.

[0055] In this embodiment, both the fine steel wire and boron fiber have extremely high tensile strength, significantly improving the strength and rigidity of the bottom support plate 2 structure and reducing deformation under external forces (such as wind load, vibration, and thermal expansion and contraction). Furthermore, the fine steel wire or boron fiber can effectively absorb and disperse stress under repeated loads, delaying the generation and propagation of fatigue cracks, and significantly improving the durability of the photovoltaic module during long-term use.

[0056] In an optional embodiment, the first coating layer 22 is provided with a first coating layer 24 on the side away from the base plate 21; and / or the second coating layer 23 is provided with a second coating layer 25 on the side away from the base plate 21.

[0057] In some embodiments, the material of the first coating 24 and the material of the second coating 25 are both water-based paints, fluorocarbons, and powders.

[0058] In this embodiment, the first coating 24 and the second coating 25 form a high-strength protective layer on the base plate 21, reducing the bending and deformation of the base support plate 2 under stress and improving the stability of the photovoltaic module. The first coating 24 and the second coating 25 can seal micro-cracks and form a barrier along the crack propagation path, thereby delaying or preventing crack propagation in the base support plate 2 and improving the tear resistance of the frame profile. Furthermore, the coatings can block the corrosion of the base support plate 2 by environmental factors such as moisture, salt spray, and ultraviolet radiation, preventing rust or aging of the frame profile during long-term use, thus effectively improving the service life of the frame profile.

[0059] In a first aspect, embodiments of this application may provide a photovoltaic module, which may include the frame profile of any of the above embodiments.

[0060] This application embodiment can also provide a photovoltaic system, including at least one photovoltaic module support as described in any of the preceding embodiments. The advantages of the aforementioned photovoltaic module support are also present in this photovoltaic system, and will not be repeated here. The application fields of the aforementioned photovoltaic system are wide, not limited to photovoltaic power plants, such as ground-mounted power plants, rooftop power plants, and floating power plants, but also including various devices and apparatuses that utilize solar energy for power generation, such as user solar power supplies, solar streetlights, solar cars, and solar buildings. Of course, it is understood that the application scenarios of the photovoltaic system are not limited to these; that is to say, the photovoltaic system can be applied in all fields that require solar energy for power generation. Taking a photovoltaic power generation system network as an example, the photovoltaic system may include a photovoltaic array, a combiner box, and an inverter. The photovoltaic array may be an array combination of multiple photovoltaic modules; for example, multiple photovoltaic modules can form multiple photovoltaic arrays. The photovoltaic array is connected to the combiner box, which can collect the current generated by the photovoltaic array. The collected current flows through the inverter and is converted into AC power required by the mains power grid before being connected to the mains power grid to achieve solar power supply.

[0061] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] For ease of description, directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom" generally indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as limiting the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the components themselves. For example, if a device in the drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0063] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] Unless otherwise expressly 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 above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0066] It should also be noted that the terms "one embodiment," "another embodiment," or "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0067] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0068] It should also be noted that the above are merely preferred embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A frame profile, comprising a top support plate (1), a bottom support plate (2) and a connecting plate (3), the top support plate (1) and the bottom support plate (2) are arranged parallel to each other, the connecting plate (3) is located on the same side of the top support plate (1) and the bottom support plate (2) and connects the two, characterized in that, the bottom support plate (2) comprises a bottom plate (21), a first cladding layer (22) and a second cladding layer (23); the first cladding layer (22) is arranged on the upper surface of the bottom plate (21), and the second cladding layer (23) is arranged on the lower surface of the bottom plate (21); wherein the first cladding layer (22) and the second cladding layer (23) are both woven structures.

2. The frame profile according to claim 1, characterized in that, the first cladding layer (22) and the second cladding layer (23) are the same structure, both of which comprise a first woven strip (221) and a second woven strip (222), the number of the first woven strip (221) is several, and the first woven strip (221) is arranged along a first direction (A); the number of the second woven strip (222) is several, and the second woven strip (222) is arranged along a second direction (B); the first woven strip (221) and the second woven strip (222) are interwoven at a preset angle; the first woven strip (221) and the second woven strip (222) form a first arch-shaped structure (223) after interweaving, and the first arch-shaped structure (223) is arranged between at least part of the adjacent first woven strips (221) and / or the first arch-shaped structure (223) is arranged between at least part of the adjacent second woven strips (222); wherein the first direction (A) and the second direction (B) are perpendicular to each other.

3. The frame profile according to claim 2, characterized in that, the material of the first woven strip (221) is one of glass fiber, carbon fiber, basalt fiber and aramid fiber; and / or the material of the second woven strip (222) is one of glass fiber, carbon fiber, basalt fiber and aramid fiber.

4. The frame profile according to claim 3, characterized in that, a cavity (224) is formed between the first woven strip (221) and the second woven strip (222), and the cavity (224) is used to fill a filler.

5. The frame profile according to claim 4, characterized in that, the material of the filler is polyurethane resin.

6. The frame profile according to claim 1, characterized in that, the first cladding layer (22) and the second cladding layer (23) are the same structure, both of which comprise a woven rod (225) and a third woven strip (226); the number of the woven rod (225) is several, and the woven rod (225) is arranged along a third direction (C); the number of the third woven strip (226) is several, and the third woven strip (226) is arranged along a fourth direction (D). ​ ​ ​ ​ ​ ​ ​ ​ ​ The third woven strip (226) is interwoven around the woven rod (225) at a preset angle, and the third woven strip (226) and the woven rod (225) are interwoven to form a second arched structure (227), and the second arched structure (227) is arranged between at least part of the adjacent woven rods (225); Wherein, the third direction (C) and the fourth direction (D) are perpendicular to each other.

7. The frame profile according to claim 6, characterized in that The cross section of the woven rod (225) is one of a regular hexagonal structure, a regular pentagonal structure, a regular quadrangular structure, and an equilateral triangular structure.

8. The frame profile according to claim 6, characterized in that The material of the woven rod (225) is one of a thin steel wire or a boron fiber.

9. The frame profile according to claim 1, characterized in that The first cladding layer (22) is provided with a first coating layer (24) on the side away from the bottom plate (21); and / or The second cladding layer (23) is provided with a second coating layer (25) on the side away from the bottom plate (21).

10. A photovoltaic module, characterized by, The frame profile according to any one of claims 1 to 9.

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