Photovoltaic module frame structure

Abstract

This application relates to a photovoltaic module frame structure. This photovoltaic module frame structure is used to mount laminated photovoltaic modules, and its core components include a frame body, a first surface disposed on the frame body, and a second and third surface adjacent to each other inside the frame body. The frame body has mounting slots for assembling laminated photovoltaic modules; a microprism array is arranged on the first surface, which can uniformly reflect light towards the front of the laminated photovoltaic module; reflective layers are disposed on the second and third surfaces to reflect light towards the back of the laminated photovoltaic module. The microprism array on the first surface, through refraction and diffuse reflection, uniformly guides light to the front of the module, improving the front light utilization rate and suppressing hot spots; the reflective layers on the second and third surfaces reflect light a second time towards the back of the module, enhancing the power generation power of the back side.

Description

Technical Field

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

[0002] With the development of the photovoltaic industry, cost reduction and efficiency improvement have become perpetual topics. Currently, the improvement of module power is gradually reaching a bottleneck. Heterojunction cells have problems such as high material and equipment costs, insufficient technological maturity, and weak industrial chain collaboration, which urgently require the assistance of auxiliary materials to improve efficiency. In traditional efficiency improvement solutions, the reflective triangular welding strip has limited module power improvement due to high equipment difficulty, serious side-tipping problems, and the reflectivity not meeting expectations. The gap film application method adds a process, and the problem of air bubbles in the film strip affects the module power and the improvement effect is not obvious. The micro-aggregation structure of traditional module frames will cause some sunlight to be reflected onto the module surface, resulting in excessively high temperature in local areas and forming hot spots, which affects the module life and efficiency. Therefore, how to solve the problem of hot spots caused by concentrated reflection of the frame while improving module power, and overcome the defects of complex process and high cost of existing solutions, has become an urgent technical problem to be solved. Utility Model Content

[0003] Therefore, it is necessary to provide a photovoltaic module frame structure to address the problems of low light reflection efficiency and hot spots that exist in photovoltaic module frames.

[0004] A photovoltaic module frame structure for mounting laminated photovoltaic modules, the photovoltaic module frame structure comprising:

[0005] The main frame includes mounting slots for assembling laminated photovoltaic modules;

[0006] A first surface is provided on the frame body, and a microprism array is provided on the first surface. The microprism array is used to uniformly reflect light to the front of the laminated photovoltaic module.

[0007] An adjacent second and third surface are provided on the inner side of the frame body. A reflective layer is provided on both the second and third surfaces to reflect light to the back of the laminated photovoltaic module.

[0008] In one embodiment, a diffuse reflection layer is provided in the microprism array, and the diffuse reflection layer is positioned facing the front of the laminated photovoltaic module, or...

[0009] A frosted layer is provided in the microprism array, and the frosted layer is positioned facing the front of the laminated photovoltaic module.

[0010] In one embodiment, the surface of the reflective layer is covered with a dense oxide layer.

[0011] In one embodiment, an arc-shaped extension is provided on the outer side of the frame body, and a first surface is provided on the arc-shaped surface of the arc-shaped extension.

[0012] The microprism array comprises several microprisms, which are uniformly distributed along the length of the arc-shaped extension.

[0013] The microprisms are staggered along the width of the arc-shaped extension.

[0014] In one embodiment, the frame body includes: an upper mounting plate, a side mounting plate, and a bottom mounting plate;

[0015] The two ends of the side mounting plate are connected to the upper mounting plate and the bottom mounting plate, respectively;

[0016] The mounting slot is formed within the space enclosed by the upper mounting plate, the side mounting plate, and the bottom mounting plate;

[0017] A vertical support plate is installed below the bottom mounting plate, and a horizontal support plate is installed below the vertical support plate.

[0018] The second surface is located on the inner side of the vertical support plate, and the third surface is located on the inner side of the horizontal support plate.

[0019] In one embodiment, the included angle between the second surface and the third surface is set to a right angle or an obtuse angle.

[0020] In one embodiment, the reflective layer is configured as a mirror.

[0021] In one embodiment, the curvature of the arcuate extension matches the curvature of the glass surface in the laminated photovoltaic module.

[0022] In one embodiment, the bottom mounting plate is arranged parallel to the back of the laminated photovoltaic module.

[0023] In one embodiment, the inner wall of the mounting slot is provided with an anti-slip layer.

[0024] The aforementioned photovoltaic module frame structure is used to install laminated photovoltaic modules. Its core components include a frame body, a first surface disposed on the frame body, and two adjacent second and third surfaces inside the frame body. The frame body has mounting slots for assembling the laminated photovoltaic modules. A microprism array is arranged on the first surface, which uniformly reflects light towards the front of the laminated photovoltaic module. Reflective layers are disposed on the second and third surfaces, reflecting light towards the back of the laminated photovoltaic module. The microprism array on the first surface, through refraction and diffuse reflection, uniformly guides light to the front of the module, improving front light utilization and suppressing hot spots. The reflective layers on the second and third surfaces reflect light a second time from the back of the module, enhancing back-side power generation. Furthermore, the structure only requires replacement of the frame, having no impact on existing production line equipment. The process is simple, highly compatible, and the frame body also provides stable mechanical support for the module. The surface treatment processes ensure long-term stable reflective performance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the photovoltaic module frame structure and the assembly of the laminated photovoltaic module provided in the embodiments of this application.

[0026] Figure 2 This is a schematic diagram of the photovoltaic module frame structure provided in the embodiments of this application.

[0027] Figure 3 This is a light path diagram of light reflection at the first surface provided in an embodiment of this application.

[0028] Icon labels:

[0029] 1000, laminated photovoltaic modules;

[0030] 2000, Frame body; 2001, Mounting slot; 2002, Reflective layer; 2003, Dense oxide layer; 2004, Upper mounting plate; 2005, Side mounting plate; 2006, Bottom mounting plate; 2007, Vertical support plate; 2008, Horizontal support plate;

[0031] 2010, First surface; 2011, Microprism array; 2012, Diffuse reflection layer; 2013, Arc-shaped extension;

[0032] 2020, the second surface; 2030, the third surface. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] See Figures 1-3 As shown, Figure 1 This is a schematic diagram of the photovoltaic module frame structure and the assembly of the laminated photovoltaic module provided in the embodiments of this application. Figure 2 This is a schematic diagram of the photovoltaic module frame structure provided in the embodiments of this application. Figure 3This is an optical path diagram showing light reflection at the first surface provided in an embodiment of this application. The photovoltaic module frame structure shown is used to mount a laminated photovoltaic module 1000. The photovoltaic module frame structure includes a frame body 2000, a first surface 2010 disposed on the frame body 2000, and a second surface 2020 and a third surface 2030 adjacent to each other inside the frame body 2000. The frame body 2000 is provided with a mounting slot 2001, which can be used to assemble the laminated photovoltaic module 1000. A microprism array 2011 is arranged on the first surface 2010, which can uniformly reflect light towards the front of the laminated photovoltaic module 1000. Reflective layers 2002 are provided on both the second surface 2020 and the third surface 2030, which can reflect light towards the back of the laminated photovoltaic module 1000. The microprism array 2011 on the first surface 2010 consists of numerous tiny, regularly arranged prisms. When light is incident, some light is directly refracted and its direction is changed on the prism surface, while the other part is diffusely scattered onto the front side of the laminated photovoltaic module 1000 through the diffuse reflection structure between the prisms. This effectively prevents light focusing, avoids hot spots, and significantly improves the front light absorption efficiency. The reflective layer 2002 on the inner second surface 2020 and third surface 2030 uses a high-reflectivity material, such as a silver or aluminum coating, which can reflect the light that is not absorbed and reflected from the back of the module back to the back cell area, improving the power generation on the back. Furthermore, in actual production, this structure only requires direct replacement of the existing photovoltaic module frame, without complex modifications to the production line equipment. The process is simple to operate, reducing production and time costs.

[0040] In some embodiments of this application, the frame body 2000 is assembled and connected to the laminated photovoltaic module 1000 through the mounting slot 2001. The first surface 2010 is located on the frame body 2000, and the microprism array 2011 on its surface forms an optical structure in an orderly manner. Through the refraction and diffuse reflection of the microprisms, the incident light is uniformly guided to the front of the module. The second surface 2020 and the third surface 2030 on the inner side of the frame body 2000 are arranged adjacently. The reflective layer 2002 on their surfaces is processed by high-precision polishing and anodizing to form a surface with high reflectivity, which can reflect the light reflected from the back of the module a second time.

[0041] The microprism array 2011 on the first surface 2010 reflects the incident light from the front, increasing the amount of light received on the front of the module. The reflective layers 2002 on the inner second surface 2020 and third surface 2030 can effectively utilize the reflected light from the back of the module, thereby significantly improving the overall light utilization rate of the photovoltaic module and thus increasing the power generation of the module. At the same time, the uniform reflection design of the microprism array 2011 can avoid the problem of local hot spots caused by concentrated light, which helps to extend the service life of the module. Moreover, this structure only improves efficiency through the optimization of the frame structure, has strong compatibility with existing production line equipment, and has low process modification difficulty.

[0042] In some embodiments of this application, a diffuse reflection layer 2012 is provided in the microprism array 2011, which is arranged facing the front of the laminated photovoltaic module 1000; or, a frosted layer is provided in the microprism array 2011, which is also arranged facing the front of the laminated photovoltaic module 1000. The diffuse reflection layer 2012 can be formed on the surface of the microprism array 2011 using a specific process (such as spraying a diffuse reflection coating, constructing a rough surface texture, etc.), using the uneven surface structure to cause diffuse reflection of light, thereby uniformly dispersing the light to the front of the module; the frosted layer can be treated by mechanical sanding process (such as sandblasting, grinding, etc.) to form a fine frosted texture on the surface of the microprism array 2011, thereby achieving the diffuse reflection effect of light. Both arrangements face the front of the module to ensure that the light reflection path directly acts on the light-receiving area of ​​the solar cell.

[0043] By setting a diffuse reflection layer 2012 or a frosted layer in the microprism array 2011, light that might otherwise be concentratedly reflected can be converted into uniformly diffused light, avoiding excessively concentrated light that could cause localized high temperatures on the module surface, effectively solving the hot spot problem and extending the module's lifespan. At the same time, uniform light reflection can make the front of the solar cell receive light more evenly, improving light absorption efficiency and further enhancing the module's power generation. In addition, the process of implementing the diffuse reflection layer 2012 or the frosted layer is relatively simple, requiring no complex equipment modifications, thus ensuring efficiency improvement while also taking into account cost control and process feasibility.

[0044] In some embodiments of this application, in the aforementioned photovoltaic module frame structure, the reflective layer 2002 located on the adjacent second surface 2020 and third surface 2030 inside the frame body 2000 is covered with a dense oxide layer 2003. The surface treatment of the reflective layer 2002 requires first using a high-precision mechanical polishing process to reduce the roughness of the second surface 2020 and third surface 2030 to the nanometer level, forming a mirror-like reflective layer. Subsequently, anodizing is performed on the polished surface using an electrochemical method to generate a uniform and dense oxide film, i.e., the dense oxide layer 2003, on the surface of the reflective layer 2002. This oxide layer adheres tightly to the surface of the reflective layer 2002, has a controllable thickness, and effectively protects the mirror effect of the reflective layer 2002. The formation of the dense oxide layer 2003 significantly enhances the surface hardness of the reflective layer 2002, making it less susceptible to damage from friction or impact during the installation, transportation, and long-term outdoor use of the photovoltaic module, thus ensuring the long-term stability of its reflective performance. At the same time, the dense oxide layer 2003 prevents the surface of the reflective layer 2002 from being oxidized or corroded. Especially in complex environments such as humidity and high salt spray, it can effectively maintain the high reflectivity of the reflective layer 2002, ensuring efficient reflection of light from the back of the laminated photovoltaic module 1000 and continuously improving the power generation of the module. In addition, the anodizing process is mature and easy to integrate into existing frame production lines without large-scale equipment modifications, thus balancing process feasibility and cost control.

[0045] In some embodiments of this application, an arc-shaped extension 2013 is provided on the outer side of the frame body 2000, and a first surface 2010 is arranged on the arc-shaped surface of the arc-shaped extension 2013; the microprism array 2011 is composed of several microprisms, which are evenly distributed along the length direction of the arc-shaped extension 2013 and staggered in the width direction of the arc-shaped extension 2013 to avoid the microprisms blocking each other.

[0046] The outer side of the frame body 2000 is formed into an arc-shaped extension 2013 by injection molding or machining. The curvature of the arc-shaped extension 2013 is optimized according to the incident angle of light on the front of the photovoltaic module to ensure that the arc surface of the first surface 2010 can effectively capture the incident light. The microprism array 2011 is fabricated using micro-nano processing technology. Several microprisms are engraved on the arc surface of the arc-shaped extension 2013. Along the length direction of the arc-shaped extension 2013, the microprisms are evenly arranged at equal intervals to ensure the uniformity of light reflection along the length direction of the frame. In the width direction, the microprisms in adjacent rows are staggered (such as in a honeycomb pattern or in a staggered row and column pattern) so that the reflected light path of each microprism is not blocked by adjacent microprisms. For example, the position of the front row of microprisms corresponds to the gap of the back row of microprisms, ensuring that the light can directly enter the refractive surface of each microprism.

[0047] The curved surface design of the curved extension 2013, combined with the spatial distribution of the microprism array 2011, optimizes the reflection path according to the incident angle of light, allowing more light to be evenly projected onto the front of the laminated photovoltaic module 1000 through the refraction of the microprisms, thus improving the front light absorption efficiency. The uniform distribution in the length direction ensures the consistency of reflection throughout the entire length of the frame, avoiding uneven local light reflection. The staggered arrangement in the width direction completely solves the problem of mutual shading of the microprism array 2011, allowing each microprism to play an independent reflection role, thereby improving light utilization. In addition, the curved structure and the regular arrangement of the microprisms facilitate large-scale production without requiring significant modifications to existing frame production lines, thus improving module power generation while taking into account process feasibility and manufacturing cost control.

[0048] In some embodiments of this application, the frame body 2000 specifically includes an upper mounting plate 2004, a side mounting plate 2005, and a bottom mounting plate 2006. The two ends of the side mounting plate 2005 are connected to the upper mounting plate 2004 and the bottom mounting plate 2006, respectively. The space enclosed by the three forms a mounting slot 2001 for assembling the laminated photovoltaic module 1000. In addition, a vertical support plate 2007 is provided below the bottom mounting plate 2006, and a horizontal support plate 2008 is further provided below the vertical support plate 2007. The second surface 2020 is located on the inner side of the vertical support plate 2007, and the third surface 2030 is located on the inner side of the horizontal support plate 2008. The main frame 2000 is manufactured using a split or integrated molding process: the upper mounting plate 2004, side mounting plates 2005, and bottom mounting plate 2006 can be formed by extruding aluminum alloy and then welding or bolting them together to form a "U"-shaped basic frame. The dimensions of the mounting slots 2001 match the edge thickness of the laminated photovoltaic modules 1000 to ensure a tight fit when the modules are embedded. The vertical support plate 2007 and horizontal support plate 2008 below the bottom mounting plate 2006 are connected to the bottom mounting plate 2006 by vertical welding or mold injection molding to form an "L"-shaped inner extension structure. The inner surfaces of the vertical support plate 2007 and the horizontal support plate 2008 require high-precision surface treatment. First, a mirror reflective layer is formed by mechanical polishing, and then a dense oxide layer 2003 is covered by anodizing to form the reflective layer 2002 of the second surface 2020 and the third surface 2030.

[0049] The mounting slot 2001 formed by the upper mounting plate 2004, the side mounting plate 2005 and the bottom mounting plate 2006 provides stable mechanical support for the laminated photovoltaic module 1000. The three-sided enclosed structure can effectively fix the edge of the module and prevent the module from shifting during installation or use.

[0050] The "L"-shaped structure formed by the vertical support plate 2007 and the horizontal support plate 2008 below the bottom mounting plate 2006 provides a precise path for the reflection of light from the back of the module. The light is reflected by the silver film on the back of the module to the second surface 2020 of the vertical support plate 2007, and then reflected back to the solar cell through the third surface 2030 of the horizontal support plate 2008, realizing the secondary utilization of the back light and improving power generation efficiency.

[0051] The layered frame structure facilitates the independent processing and surface treatment of each component. In particular, the reflective layer 2002 of the second surface 2020 and the third surface 2030 can be polished and oxidized before the support plate is installed, reducing the difficulty of the process. At the same time, the modular design also makes it easy for the frame to be adapted to photovoltaic modules of different specifications, improving the compatibility of the production line.

[0052] In some embodiments of this application, the reflective layer 2002 on the adjacent second surface 2020 and third surface 2030 inside the frame body 2000 is set as a mirror. High-precision optical mirror processing is required for the second surface 2020 and third surface 2030: First, a multi-stage precision grinding process is used, employing micron-level abrasives to mechanically polish the inner surface of the vertical support plate 2007 (second surface 2020) and the inner surface of the horizontal support plate 2008 (third surface 2030), reducing the surface roughness to the nanometer level and achieving a mirror-like smoothness; subsequently, an electrochemical anodizing treatment is performed to form a uniform and dense oxide film on the polished mirror surface, further enhancing the reflectivity and wear resistance of the mirror and ensuring the long-term stability of the mirror reflection effect.

[0053] Mirror reflection has extremely high light reflection efficiency, which can accurately reflect the light that shines on the second surface 2020 and the third surface 2030 to the back cells of the laminated photovoltaic module 1000 at a regular angle, minimizing light reflection loss. Compared with ordinary diffuse reflection surfaces, it can improve light utilization by 15%-20%, significantly increasing the power generation on the back of the module. At the same time, the smooth surface of the mirror is not easy to accumulate dust or retain impurities, which facilitates self-cleaning maintenance during outdoor use and maintains high reflectivity over a long period of time. In addition, the mirror processing technology is mature and can be integrated with the polishing and anodizing processes on the existing frame production line without the need for additional complex equipment, thus controlling production costs while ensuring efficiency improvement.

[0054] In some embodiments of this application, the curvature of the arc-shaped extension 2013 on the outer side of the frame body 2000 is consistent with the curvature of the glass surface in the laminated photovoltaic module 1000. First, the curvature parameters of the glass surface in the laminated photovoltaic module 1000 need to be measured, for example, by obtaining data such as the radius of curvature and arc angle of the glass surface through 3D scanning or mold contouring. Based on the obtained data, the arc-shaped extension 2013 is processed on the outer side of the frame body 2000 using processes such as aluminum alloy extrusion, injection molding, or machining, so that the curvature of the arc-shaped extension 2013 perfectly matches the glass surface. During processing, the curvature accuracy needs to be controlled using precision molds or CNC equipment to ensure that the curvature error of the arc-shaped extension 2013 does not exceed a certain range, in order to achieve seamless bonding with the glass surface.

[0055] The design of the curved extension 2013, which matches the curvature of the glass surface of the laminated photovoltaic module 1000, allows light incident on the curved surface of the frame to be projected onto the microprism array 2011 at the optimal angle, reducing light reflection deviation caused by curvature mismatch and improving light reflection efficiency. At the same time, the consistent curvature of both ensures a uniform gap between the frame and the module glass surface, avoiding light blocking or leakage caused by structural misalignment, making the secondary reflection of light by the microprism array 2011 more precise and efficient. In addition, this design also enhances the tightness of the assembly between the frame and the module, improves the mechanical stability of the overall structure, and reduces the risk of the frame and module detaching due to vibration, temperature difference, and other factors in outdoor environments, ensuring long-term reliable operation of the module while optimizing optical performance.

[0056] In some embodiments of this application, the bottom mounting plate 2006 of the frame body 2000 is arranged parallel to the back of the laminated photovoltaic module 1000. It is necessary to ensure the flatness of the bottom mounting plate 2006 and its parallelism with the back of the module during the design and assembly stages of the frame body 2000: First, based on the theoretical plane of the back of the laminated photovoltaic module 1000, the upper surface of the bottom mounting plate 2006 is precisely machined using a CNC milling machine or grinding machine during the processing of the frame body 2000 to control the flatness error within a certain range; second, during assembly, a level or laser calibration device is used to calibrate the parallelism between the bottom mounting plate 2006 and the back of the module placed in the mounting slot 2001. By adjusting the support pads or fasteners, it is ensured that the parallel deviation between the two does not exceed a certain angle, thereby achieving strict parallelism between the bottom mounting plate 2006 and the back of the module.

[0057] The bottom mounting plate 2006 is parallel to the back of the laminated photovoltaic module 1000, ensuring that the "L"-shaped reflective structure formed by the vertical support plate 2007 (second surface 2020) and the horizontal support plate 2008 (third surface 2030) inside the frame body 2000 maintains a precise geometric relationship with the back of the module. This ensures that the path of light reflected from the silver film on the back of the module to the second surface 2020, and then reflected back to the solar cell via the third surface 2030, is at the optimal reflection angle, maximizing the secondary utilization rate of back light and increasing back power generation by 5%-10%. Simultaneously, the parallel arrangement ensures a uniform gap between the bottom mounting plate 2006 and the back of the module, avoiding localized stress concentration caused by tilting, enhancing the structural stability of the module assembly, and reducing the risk of glass breakage due to uneven stress during long-term use. Furthermore, this design facilitates the calculation and optimization of the light path of the back reflective layer 2002, making optical design more predictable and providing convenience for standardized production of frame structures and adaptation to modules of different specifications.

[0058] In some embodiments of this application, an anti-slip layer is provided on the inner wall of the mounting slot 2001. This anti-slip layer is used to enhance the assembly stability between the laminated photovoltaic module 1000 and the frame. By increasing the friction between the inner wall of the mounting slot 2001 and the edge of the laminated photovoltaic module 1000, the anti-slip layer effectively prevents the module from shifting or falling off due to external forces such as vibration and wind pressure during transportation, installation, and use, thereby improving the connection reliability between the module and the frame. The flexible material (such as silicone rubber) of the anti-slip layer also acts as a buffer, reducing hard contact between the frame and the module and avoiding glass edge breakage caused by stress concentration.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A photovoltaic module frame structure for mounting laminated photovoltaic modules (1000), characterized in that, The photovoltaic module frame structure includes: The frame body (2000) includes a mounting slot (2001) for assembling the laminated photovoltaic module (1000). A first surface (2010) is provided on the frame body (2000), and a microprism array (2011) is provided on the first surface (2010). The microprism array (2011) is used to uniformly reflect light to the front of the laminated photovoltaic module (1000). An adjacent second surface (2020) and a third surface (2030) are provided on the inner side of the frame body (2000). A reflective layer (2002) is provided on both the second surface (2020) and the third surface (2030). The reflective layer (2002) is used to reflect light to the back of the laminated photovoltaic module (1000).

2. The photovoltaic module frame structure according to claim 1, characterized in that, The microprism array (2011) includes a diffuse reflection layer (2012), which faces the front of the laminated photovoltaic module (1000). The microprism array (2011) is provided with a frosted layer, which is disposed facing the front of the laminated photovoltaic module (1000).

3. The photovoltaic module frame structure according to claim 1, characterized in that, The surface of the reflective layer (2002) is covered with a dense oxide layer (2003).

4. The photovoltaic module frame structure according to claim 1, characterized in that, An arc-shaped extension (2013) is provided on the outer side of the frame body (2000), and the first surface (2010) is provided on the arc-shaped surface of the arc-shaped extension (2013); The microprism array (2011) includes several microprisms, which are uniformly distributed along the length of the arc-shaped extension (2013); The microprisms are staggered in the width direction of the arc-shaped extension (2013).

5. The photovoltaic module frame structure according to claim 1, characterized in that, The frame body (2000) includes: an upper mounting plate (2004), a side mounting plate (2005), and a bottom mounting plate (2006). The two ends of the side mounting plate (2005) are respectively connected to the upper mounting plate (2004) and the bottom mounting plate (2006). The mounting slot (2001) is formed within the space enclosed by the upper mounting plate (2004), the side mounting plate (2005), and the bottom mounting plate (2006); A vertical support plate (2007) is provided below the bottom mounting plate (2006), and a horizontal support plate (2008) is provided below the vertical support plate (2007). The second surface (2020) is disposed on the inner side of the vertical support plate (2007), and the third surface (2030) is disposed on the inner side of the horizontal support plate (2008).

6. The photovoltaic module frame structure according to claim 1, characterized in that, The angle formed between the second surface (2020) and the third surface (2030) is set to a right angle or an obtuse angle.

7. The photovoltaic module frame structure according to claim 1, characterized in that, The reflective layer (2002) is configured as a mirror.

8. The photovoltaic module frame structure according to claim 4, characterized in that, The curvature of the arc-shaped extension (2013) is consistent with the curvature of the glass surface in the laminated photovoltaic module (1000).

9. The photovoltaic module frame structure according to claim 5, characterized in that, The bottom mounting plate (2006) is arranged parallel to the back of the laminated photovoltaic module (1000).

10. The photovoltaic module frame structure according to claim 1, characterized in that, The inner wall of the mounting slot (2001) is provided with an anti-slip layer.

Images