Photovoltaic module frame and photovoltaic module

Abstract

This utility model relates to the field of photovoltaic cell technology, and discloses a photovoltaic module frame and a photovoltaic module. The photovoltaic module frame includes a mounting frame and a reflective part. The mounting frame has a mounting groove for accommodating the photovoltaic cell module. The reflective part is used to reflect light to the photovoltaic cell module. The reflective part includes a first reflective part and a second reflective part. The first reflective part is located on the top surface of the mounting frame, and the second reflective part is located at the end of the mounting frame. The second reflected light path generated by the second reflective part is located between the first reflected light path generated by the first reflective part and the photovoltaic cell module. Multiple surfaces of the mounting frame achieve full-spectrum reflection by setting reflective parts. The reflective parts fully utilize the light entering the photovoltaic module frame area, allowing sunlight that would otherwise be unusable on the mounting frame to be reflected onto the photovoltaic cell module, optimizing the reflected light path, increasing the amount of light entering the photovoltaic cell module, and increasing the photovoltaic module's efficiency in utilizing sunlight.

Description

Technical Field

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

[0002] Driven by technological innovation, policy support, and market demand, the photovoltaic (PV) industry is entering a period of rapid development. By 2025, the global PV market will enter a new era of 500GW-level installed capacity. Despite the promising prospects of the PV industry, it also faces some risks and challenges.

[0003] The conversion efficiency of photovoltaic (PV) modules refers to the efficiency with which PV modules convert solar energy into electrical energy. It is an important indicator for measuring the performance of PV modules, and how to improve the conversion efficiency of PV modules has become an urgent problem to be solved. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] The first aspect of this application provides a photovoltaic module frame, which includes a mounting frame and a reflective portion. The mounting frame has a mounting groove for accommodating a photovoltaic cell module. The reflective portion is used to reflect light to the photovoltaic cell module. The reflective portion includes a first reflective portion and a second reflective portion. The first reflective portion is located on the top surface of the mounting frame, and the second reflective portion is located at the end of the mounting frame. The second reflected light path generated by the second reflective portion is located between the first reflected light path generated by the first reflective portion and the photovoltaic cell module.

[0006] In some of the technical solutions provided in this application, the first reflective part includes multiple connected convex ridges, the cross-sectional shape of the convex ridges is triangular, and a first reflective surface is provided on the convex ridge. The first reflective surface is located on the side of the convex ridge close to the second reflective part, and the height of the apex of the convex ridge gradually decreases, so that the multiple first reflective surfaces are staggered in sequence.

[0007] In some of the technical solutions provided in this application, the apex angle of the convex ridge is α, 90°>α>60°, and the angle between the first reflective surface and the top surface of the photovoltaic cell module is β1, 135°>β1>90°.

[0008] In some technical solutions provided in this application, the second reflective part includes a second reflective surface, which is a plane, and the angle between the second reflective surface and the top surface of the photovoltaic cell module is β2, where β2=β1.

[0009] In some technical solutions provided in this application, the mounting frame includes a first frame and a second frame that are arranged opposite to each other, and two second reflective parts are respectively disposed on the first frame and the second frame. The second reflective part includes a second reflective surface. The two second reflective surfaces are arranged opposite to each other. The cross-sectional shape of the second reflective surface is a parabola. The four endpoints of the two parabolas are connected to form two intersecting lines. The focal length of the parabola is related to the angle between the lines.

[0010] In some technical solutions provided in this application, the photovoltaic module frame further includes: a base, the base being connected to the bottom of the mounting frame, the photovoltaic cell module including a cell, a light-transmitting space being formed between the cell and the side wall of the base, and the reflective part further including a third reflective part, the third reflective part being located on the side wall and / or bottom wall of the base, and at least part of the third reflective part being located within the light-transmitting space.

[0011] In some of the technical solutions provided in this application, the cross-sectional shape of the third reflector is an isosceles triangle, and the vertex angle of the isosceles triangle is 30° to 120°.

[0012] In some of the technical solutions provided in this application, the surfaces of the first reflective part, the second reflective part and the third reflective part are mirrored, and the top surface of the mounting frame and the bottom surface of the base are respectively provided with anti-slip protrusions and grooves. When multiple photovoltaic module frames are stacked, adjacent anti-slip protrusions and grooves are connected in cooperation.

[0013] In some of the technical solutions provided in this application, the mounting frame is provided with an adhesive receiving groove, which is connected to the mounting groove and located on both sides of the mounting groove.

[0014] The second aspect of the technical solution of this application proposes a photovoltaic module, which includes: a photovoltaic cell module and a photovoltaic module frame provided in any of the above embodiments, wherein the photovoltaic cell module is located in the mounting groove of the photovoltaic module frame.

[0015] Compared with related technologies, this utility model has at least the following beneficial effects:

[0016] Multiple surfaces of the mounting frame achieve full-spectrum reflection through reflective elements. These reflective elements fully utilize the light entering the frame area of ​​the photovoltaic module, allowing sunlight that would otherwise be unusable on the mounting frame to be reflected onto the photovoltaic module. This optimizes the light reflection path, increases the amount of light entering the photovoltaic module, and enhances the photovoltaic module's efficiency in utilizing sunlight. Consequently, it significantly improves the output power of the photovoltaic module, thereby increasing its conversion efficiency by approximately 3W to 5W and improving the conversion efficiency by more than 0.1%. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of some embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 This application provides an embodiment of a photovoltaic module frame installation diagram;

[0019] Figure 2 for Figure 1 A magnified view of the area circled at point E in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of a photovoltaic cell module according to one embodiment of this application;

[0021] Figure 4 A schematic diagram of the frame structure of a short-frame photovoltaic module according to an embodiment of this application;

[0022] Figure 5 A schematic diagram of the installation of a short-frame photovoltaic module frame according to an embodiment of this application;

[0023] Figure 6 A schematic diagram of the frame structure of a long-frame photovoltaic module according to an embodiment of this application;

[0024] Figure 7 A schematic diagram of the installation of the frame of a long-frame photovoltaic module according to an embodiment of this application;

[0025] Figure 8 A schematic diagram of the structure of the first reflective part and the second reflective part according to an embodiment of this application;

[0026] Figure 9 A schematic diagram of the reflection principle of the first reflective part of an embodiment provided in this application;

[0027] Figure 10 A schematic diagram of the reflection of the second reflective surface according to an embodiment of this application;

[0028] Figure 11 A schematic diagram of the shape of the second reflective surface according to one embodiment of this application;

[0029] Figure 12 This is a schematic diagram of the structure of a photovoltaic module according to one embodiment of this application.

[0030] in, Figures 1 to 12 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0031] 10. Photovoltaic module frame; 100. Mounting frame; 110. Mounting groove; 120. Groove; 130. Adhesive groove; 140. First frame; 150. Second frame; 200. Reflective part; 210. First reflective part; 211. First reflected light path; 212. Raised ridge; 2121. First reflective surface; 220. Second reflective part; 221. Second reflected light path; 222. Second reflective surface; 230. Third reflective part; 300. Base; 310. Anti-slip protrusion; 320. Light-transmitting space; 20. Photovoltaic module; 21. Photovoltaic cell module; 22. Top cover plate; 23. Front adhesive film; 24. Cell; 25. Back adhesive film; 26. Bottom cover plate; 27. Structural adhesive. Detailed Implementation

[0032] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0033] The first aspect of this application provides a photovoltaic module frame 10, such as... Figure 1 and Figure 2 As shown, the photovoltaic module frame 10 includes a mounting frame 100 and a reflective part 200. The mounting frame 100 is provided with a mounting groove 110 for accommodating a photovoltaic cell module 21. The reflective part 200 is used to reflect light to the photovoltaic cell module 21. The reflective part 200 includes a first reflective part 210 and a second reflective part 220. The first reflective part 210 is located on the top surface of the mounting frame 100, and the second reflective part 220 is located at the end of the mounting frame 100. The second reflected light path 221 generated by the second reflective part 220 is located between the first reflected light path 211 generated by the first reflective part 210 and the photovoltaic cell module 21.

[0034] In this embodiment, photovoltaics is a technology that uses solar cell semiconductor materials to convert the radiant energy of sunlight into electrical energy. The photovoltaic module 20 is a device that converts solar energy into electrical energy. Photovoltaic modules 20 can be classified into crystalline silicon cell modules and thin-film cell modules according to the type of cell technology. The photovoltaic module 20 includes: a photovoltaic module frame 10 and a photovoltaic cell module 21, encapsulation materials, a junction box, connectors, and cables. Figure 3As shown, the photovoltaic module 21 includes: an upper cover plate 22 (glass), a front encapsulant film 23, solar cells 24, a back encapsulant film 25, and a lower cover plate 26 (back sheet or glass). Along the projection direction perpendicular to the solar cells 24, the projected area of ​​the photovoltaic module frame 10 accounts for approximately 3% of the projected area of ​​the photovoltaic module 20. The material of the photovoltaic module frame 10 can be aluminum alloy, surface-treated composite material, or steel.

[0035] The mounting frame 100 of the photovoltaic module frame 10 can have a polygonal or circular outline. For example, the mounting frame 100 can be a rectangular frame, including a long frame and a short frame. The long frame is mounted on the long side of the photovoltaic cell module 21, and the short frame is mounted on the short side of the photovoltaic cell module 21. The mounting groove 110 is an annular groove, and the outer edge of the photovoltaic cell module 21 can be inserted into the mounting groove 110, so that the mounting frame 100 fits around the outer periphery of the photovoltaic cell module 21.

[0036] The reflective part 200 forms part of the surface of the mounting frame 100. At least part of the light hitting the reflective part 200 will be reflected. The reflective part 200 is used to reflect light to the cell 24 of the photovoltaic cell module 21. The first reflective part 210 and the second reflective part 220 of the reflective part 200 are both located above the mounting groove 110. The first reflective part 210 and the second reflective part 220 are connected and located on the top surface and the end of the mounting frame 100, respectively. The second reflective part 220 is located on the side of the first reflective part 210 that can reflect light, so that the first reflective part 210 surrounds the outer periphery of the second reflective part 220. The second reflective part 220 can be provided on the side of the mounting frame 100. The first reflective part 210 and the second reflective part 220 are used to form the first reflected light path 211 and the second reflected light path 221, respectively, so that the top surface and the end surface of the mounting frame 100 can reflect light. The first reflected light path 211 and the second reflected light path 221 are located above the photovoltaic cell module 21, and the second reflected light path 221 is located below the first reflected light path 211, so that light can enter the photovoltaic cell module 21 more evenly.

[0037] It should be noted that the conversion efficiency η of photovoltaic module 20 is the electrical power P output by photovoltaic module 20. out The solar power P incident on photovoltaic module 20 in The ratio, i.e.: η=P out / P in ×100%, where P in The area of ​​photovoltaic module 20 under standard light intensity and standard light intensity of 1000W / m 2 The area of ​​the photovoltaic module 20 includes the total area of ​​the solar cells 24 and the area of ​​the non-solid cells 24.

[0038] Multiple surfaces of the mounting frame 100 achieve full-spectrum reflection through reflective elements 200. The reflective elements 200 fully utilize the light entering the area of ​​the photovoltaic module frame 10, allowing sunlight that would otherwise be unusable on the mounting frame 100 to be reflected onto the photovoltaic cell module 21. This optimizes the light reflection path, increases the amount of light entering the photovoltaic cell module 21, increases the photovoltaic module 20's utilization efficiency of sunlight, significantly improves the output power of the photovoltaic module 20, and thus improves the conversion efficiency of the photovoltaic module 20, increasing the output power by about 3W to 5W and improving the conversion efficiency of the photovoltaic module 20 by more than 0.1%.

[0039] In some embodiments provided in this application, such as Figure 2 and Figure 8 As shown, the first reflective part 210 includes a plurality of connected protrusions 212. The cross-sectional shape of the protrusions 212 is triangular. A first reflective surface 2121 is provided on the protrusions 212. The first reflective surface 2121 is located on the side of the protrusions 212 close to the second reflective part 220. The height of the apex of the protrusions 212 gradually decreases, so that the plurality of first reflective surfaces 2121 are staggered in sequence.

[0040] In this embodiment, the shape of the first reflective portion 210 is defined. The convex rib 212 is cut perpendicularly along its extension direction, resulting in a triangular cross-sectional shape. This forms a sawtooth structure composed of multiple connected triangular protrusions in the first reflective portion 210. A first reflective surface 2121 is provided on the side of the convex rib 212 closest to the second reflective portion 220. The first reflective portion 200 generates a first reflected light path 211 through the first reflective surface 2121. From the first reflective portion 210 towards the second reflective portion 220, the height of the apex of the convex rib 212 gradually decreases towards the photovoltaic module 21, causing the multiple first reflective surfaces 2121 to be staggered sequentially. The inner first reflective surface 2121 avoids the outer first reflective surface 2121, ensuring that any first reflective surface 2121 can reflect light to the photovoltaic module 21, reducing the obstruction of reflected light. Compared to a single reflective slope, the inclined sawtooth-shaped first reflective part 210 can ensure reflective efficiency while avoiding a significant increase in the cross-sectional area and thickness of the photovoltaic module frame 10. This facilitates the stacking of photovoltaic module frames 10, reduces the material usage and product cost of the photovoltaic module frame 10, and increases power while reducing the cost per watt of the photovoltaic module 20.

[0041] In some embodiments provided in this application, such as Figure 8 and Figure 9 As shown, the apex angle of the protruding ridge 212 is α, 90°>α>60°, and the angle between the first reflective surface 2121 and the top surface of the photovoltaic cell module 21 is β1, 135°>β1>90°.

[0042] In this embodiment, the shape of the first reflective portion 210 is further defined. When light strikes the first reflective surface 2121, the point of contact between the light and the first reflective surface 2121 is the incident point, and at the incident point, the straight line perpendicular to the first reflective surface 2121 is the normal. The incident light is reflected at the incident point to form a reflected light, and the incident light and the reflected light are symmetrically located on both sides of the normal. The angles α and β1 are related to the dimensions of the mounting frame 100 and the photovoltaic cell module 21.

[0043] For example, Figure 9 In the diagram, incident point A is the vertex of the convex ridge 212. Light rays travel in a direction perpendicular to the photovoltaic module 21 to point A. AD is the normal, and AB is the distance between the vertex of the convex ridge 212 and the top surface of the photovoltaic module 21. The top surface of the photovoltaic module 21 is the top surface of the top cover plate 22. AB can be simplified to the maximum thickness of the distance from the vertex of the convex ridge 212 to the top surface of the mounting groove 110. BC is the projection distance of the reflected light ray on the top surface of the photovoltaic module 21, i.e., the farthest distance the reflected light ray can reach on the top surface of the photovoltaic module 21. When calculating the first reflective part 210 located on the long side frame, BC can be simplified to the width of the photovoltaic module 21. When calculating the first reflective part 210 located on the short side frame, BC can be simplified to the length of the photovoltaic module 21. AC is the travel distance of the reflected light ray. The angle bisector AB of the vertex of the convex ridge 212 is perpendicular to the top surface of the photovoltaic module 21, i.e., AB is perpendicular to BC. Therefore, △ABC forms a right triangle. ∠1 is the angle between the first reflective surface 2121 and AC, and ∠2 is the angle between the first reflective surface 2121 and AB. Therefore, ∠α / 2 = ∠1, tan(∠α / 2 + ∠1) = AB / BC. The maximum values ​​of ∠β1 and ∠α are determined by the values ​​of AB and BC.

[0044] ∠β1=180°-[90°-(arctanAB / BC) / 2];

[0045] ∠2 = 180° - ∠β1;

[0046] ∠α = (90° - ∠2) × 2.

[0047] In some embodiments provided in this application, such as Figure 8 As shown, the second reflective part 220 includes a second reflective surface 222, which is a plane. The angle between the second reflective surface 222 and the top surface of the photovoltaic cell module 21 is β2, where β2 = β1.

[0048] In this embodiment, the second reflective surface 222 is a reflective inclined surface, and the angle between the second reflective surface 222 and the top surface of the photovoltaic cell module 21 is β2. The range of values ​​and calculation method of angle β2 are the same as those of β1, so that the tilt angles of the second reflective surface 222 and the first reflective surface 2121 are the same, thereby increasing the number of light rays in the first reflected light path 211 and the second reflected light path 221 and making the distribution more uniform.

[0049] In some embodiments provided in this application, such as Figure 5 , Figure 7 , Figure 10 and Figure 11 As shown, the mounting frame 100 includes a first frame 140 and a second frame 150 arranged opposite to each other. Two second reflective parts 220 are respectively disposed on the first frame 140 and the second frame 150. The second reflective part 220 includes a second reflective surface 222. The two second reflective surfaces 222 are arranged opposite to each other. The cross-sectional shape of the second reflective surface 222 is a parabola. The four endpoints of the two parabolas are connected to form two intersecting lines. The focal length of the parabola is related to the angle between the lines.

[0050] In this embodiment, the second reflective surface 222 is a reflective curved surface. The first frame 140 and the second frame 150 of the mounting frame 100 are arranged opposite to each other, so that the second reflective surfaces 222 on both sides are opposite to each other and protrude towards each other. From top to bottom, the protrusion distance of the second reflective surface 222 gradually increases, making the reflected light more uniform.

[0051] A vertical section is taken from the second reflective portion 220 along its extending direction, revealing that the cross-sectional shape of the second reflective surface 222 is parabolic, and the cross-sectional shapes of the second reflective surfaces 222 on both sides are two symmetrical parabolas. Figure 11 In the diagram, the four endpoints of the two parabolas are N1, N2, M1, and M2, where M1 and M2 are the lowest points of the two parabolas, and N1 and N2 are the highest points of the two parabolas. The lines connecting the intersecting endpoints are N1M2 and N2M1, respectively. A coordinate system is established with the midpoint O of M1M2 as the origin and M1M2 as the horizontal axis. θ is the half-angle of the parabola's opening, which is half the angle between N1M2 and N2M1, i.e., the angles between N1M2 and N2M1 and the vertical axis, respectively. δ is the angle between N1M2 and N2M1 and the horizontal axis, respectively. Therefore:

[0052] θ = 90° - δ, and δ = 90° - α, therefore θ = α, where θ ranges from 60° to 90°. The value of f is determined by θ.

[0053] In some embodiments, H represents the distances of N1 and N2 to the horizontal axis, i.e., the thickness of the second reflective portion 220. The focal length of the parabola is related to the thickness H of the second reflective portion 220. According to the definition of a parabola and trigonometric identities:

[0054]

[0055] Where f is the focal length of the parabola, and the value of f is determined by θ and H.

[0056] In other embodiments, the focal length of the parabola is associated with the minimum distance M1M2 between the two second reflective surfaces 222, according to the formula:

[0057]

[0058] Therefore, the value of f is determined by θ and M1M2.

[0059] The parabolic mathematical model for the second reflective surface 222, determined by f, is as follows:

[0060]

[0061] Where x is the horizontal axis, y is the vertical axis, x and y are the dependent variables, and t is a fixed factor.

[0062] In some embodiments provided in this application, such as Figure 1 , Figure 4 and Figure 6 As shown, the photovoltaic module frame 10 also includes: a base 300, which is connected to the bottom of the mounting frame 100; the photovoltaic cell module 21 includes a cell 24, which forms a light-transmitting space 320 between the cell 24 and the side wall of the base 300; the reflective part 200 also includes a third reflective part 230, which is located on the side wall and / or bottom wall of the base 300, and at least part of the third reflective part 230 is located within the light-transmitting space 320.

[0063] In this embodiment, a base 300 is provided below the mounting frame 100, providing structural support for the mounting frame 100. Exemplarily, the bottom surface extension length of the base 300 below the short frame is less than that of the base 300 below the long frame. A gap is provided between the solar cell 24 and the side wall of the base 300, forming a light-transmitting space 320 in the vertical direction within this gap. A third reflective portion 230 is provided on the side wall and / or bottom wall of the base 300. Exemplarily, the third reflective portion 230 can be a reflective prism or a rounded corner. The third reflective portion 230 is located at the bottom of the base 300, with at least a portion of it located within the light-transmitting space 320. The third reflective portion 230 can utilize the sunlight transmitted through the light-transmitting space 320 to directly reflect the light to the bottom of the solar cell 24 or to illuminate the solar cell 24 after multiple reflections, increasing the reflected light received by the bottom surface of the solar cell 24, further increasing the amount of light entering the photovoltaic module 21, and increasing the solar energy utilization efficiency of the photovoltaic module 20.

[0064] In some embodiments provided in this application, such as Figure 4 and Figure 6 As shown, the cross-sectional shape of the third reflector 230 is an isosceles triangle, with the vertex angle of the isosceles triangle ranging from 30° to 120°.

[0065] In this embodiment, the shape of the third reflector 230 is defined. The third reflector 230 can be composed of multiple isosceles triangles, forming a sawtooth shape. This allows light to be reflected between the sawtooths, increasing the amount of light reflected to the battery cell 24. By defining the apex range of the isosceles triangles, the reflected light path formed by the third reflector 230 is made more rational, enabling the third reflector 230 to reflect more light and improving light utilization efficiency.

[0066] In some embodiments provided in this application, such as Figure 6 As shown, the surfaces of the first reflective part 210, the second reflective part 220 and the third reflective part 230 are mirror surfaces. The top surface of the mounting frame 100 and the bottom surface of the base 300 are respectively provided with anti-slip protrusions 310 and grooves 120. When multiple photovoltaic module frames 10 are stacked, adjacent anti-slip protrusions 310 and grooves 120 are connected in cooperation.

[0067] In this embodiment, the surface of the reflective part 200 is mirror-smoothed, making the surfaces of the first reflective part 210, the second reflective part 220, and the third reflective part 230 highly reflective and smooth mirror surfaces. The reflective part 200 reflects light to the solar cell 24 through mirror reflection. Mirror reflection keeps the reflected light parallel, enabling it to be accurately reflected to the solar cell 24 according to a preset light path. In related technologies, the frame is made of sandblasted and anodized aluminum alloy, resulting in a matte surface. When light shines on the surface of the photovoltaic module frame, diffuse reflection occurs. Compared to diffuse reflection, mirror reflection increases the amount of light reflected onto the solar cell 24, reduces the waste of sunlight, improves the light reflectivity of the reflective part 200, makes the distribution of reflected light more uniform, and makes fuller use of the received solar energy.

[0068] For example, taking aluminum alloy as an example, after the aluminum profile is extruded during the production process, the surface basically maintains a mirror-like reflective effect. The reflective part 200 can maintain the mirror effect of the aluminum profile without any other treatment, or the reflective part 200 can be treated by electroplating to improve the reflective effect of the reflective part 200 on light, omitting the sandblasting process in related technologies, and reducing the cost consumption caused by the sandblasting process while increasing the reflectivity.

[0069] Since the surface of the mounting frame 100 is mirrored, anti-slip protrusions 310 and grooves 120 are respectively provided on the top surface of the mounting frame 100 and the bottom surface of the base 300. The anti-slip protrusions 310 can be rubber pads, and the material of the rubber pads can be rubber products, paper, or plastic. For example, the anti-slip protrusions 310 are provided on the base 300, and the grooves 120 are provided on the mounting frame 100. The shape and position of the grooves 120 of the protrusions match. When multiple photovoltaic module frames 10 are stacked, the anti-slip protrusions 310 extend into the adjacent grooves 120, so that the adjacent photovoltaic module frames 10 are engaged, realizing the anti-slip function of the positioning points on the upper and lower sides of the photovoltaic module frames 10. Through the cooperation of the positioning points, the slippage of the photovoltaic modules 20 due to the smooth surface can be effectively prevented when stacking during transportation and storage, thus improving the safety and reliability of the mass production of photovoltaic modules 20.

[0070] In some embodiments provided in this application, such as Figure 4 and Figure 6 As shown, the mounting frame 100 is provided with an adhesive receiving groove 130, which is connected to the mounting groove 110 and located on both sides of the mounting groove 110.

[0071] In this embodiment, the photovoltaic cell module 21 is connected to the mounting groove 110 via structural adhesive 27. The mounting groove 110 has adhesive-containing grooves 130 on both its upper and lower sides. These grooves 130 accommodate the structural adhesive 27, increasing its capacity. The bottom groove 130, in particular, can accommodate the structural adhesive 27 at the bottom edge of the photovoltaic cell module 21, reducing adhesive overflow and improving the neatness and flatness of the photovoltaic module. Furthermore, the adhesive-containing grooves 130 allow more sunlight to pass through the light-transmitting space 320 outside the cell 24, enabling more light to enter the cell 24 through the third reflector 230. This prevents adhesive overflow from blocking light within the light-transmitting space 320, improving light utilization efficiency.

[0072] A second aspect of this application provides a photovoltaic module 20, such as Figure 12 As shown, the photovoltaic module 20 includes a photovoltaic cell module 21 and a photovoltaic module frame 10 provided in any of the above embodiments, wherein the photovoltaic cell module 21 is located in the mounting groove 110 of the photovoltaic module frame 10.

[0073] In this embodiment, it should be noted that the photovoltaic module 20 includes the photovoltaic module frame 10 provided in any of the above embodiments, and therefore has all the beneficial technical effects of the photovoltaic module frame 10. To avoid repetition, it will not be described in detail here.

[0074] In one specific embodiment, a photovoltaic module 20 with optimized full-spectrum light utilization is proposed. The photovoltaic module 20 includes: a top cover glass, a front encapsulation film, bifacially generating solar cells 24, a back encapsulation film, a bottom cover plate 26 (glass or backplate), and an aluminum alloy frame (i.e., the photovoltaic module frame 10). Compared with conventional matte frame modules, the aluminum alloy frame of this invention features a glossy full-spectrum reflective design. Through the optimized design of the edge light path of the photovoltaic module 20, sunlight that would otherwise be unusable on the aluminum alloy frame is reflected onto the photovoltaic cells 24 in the module. At the same time, the surface of the aluminum alloy frame is mirror-finished to further improve the utilization rate of sunlight and enhance the conversion efficiency of the photovoltaic module 20.

[0075] The uppermost frame on the front of the aluminum alloy frame (i.e., mounting frame 100) features a reflective serrated structure (i.e., first reflective part 200) and a reflective surface (i.e., second reflective surface 222). The reflective surface is either a reflective bevel or a reflective curved surface, with the angle between the reflective bevel and the glass cover plate ranging from 90° to 135°. The bottom of the rear frame of the aluminum alloy frame (i.e., base 300), facing the sunlight, features a reflective serrated structure (i.e., third reflective part 200), with the serrated apex angle ranging from 30° to 120°. All reflective surfaces are finished with a glossy surface. Corresponding raised points (i.e., anti-slip bumps 310) and recessed points (i.e., grooves 120) are incorporated into the frame for anti-slip design, effectively preventing slippage between components.

[0076] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0077] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit 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 utility model.

[0078] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] The above are merely some embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photovoltaic module frame, characterized in that, include: The mounting frame is provided with a mounting slot for accommodating photovoltaic cell modules; The reflective part is used to reflect light to the photovoltaic cell module. The reflective part includes a first reflective part and a second reflective part. The first reflective part is disposed on the top surface of the mounting frame, and the second reflective part is disposed at the end of the mounting frame. The second reflected light path generated by the second reflective part is located between the first reflected light path generated by the first reflective part and the photovoltaic cell module.

2. The photovoltaic module frame according to claim 1, characterized in that, The first reflective part includes multiple connected convex ridges, each convex ridge having a triangular cross-sectional shape. Each convex ridge has a first reflective surface located on the side of the convex ridge closer to the second reflective part. The height of the apex of the convex ridge gradually decreases, causing the multiple first reflective surfaces to be staggered sequentially.

3. The photovoltaic module frame according to claim 2, characterized in that, The apex angle of the convex ridge is α, where 90° > α > 60°, and the angle between the first reflective surface and the top surface of the photovoltaic cell module is β1, where 135° > β1 > 90°.

4. The photovoltaic module frame according to claim 3, characterized in that, The second reflective part includes a second reflective surface, which is a plane, and the angle between the second reflective surface and the top surface of the photovoltaic cell module is β2, where β2 = β1.

5. The photovoltaic module frame according to claim 3, characterized in that, The mounting frame includes a first frame and a second frame arranged opposite to each other. Two second reflective parts are respectively disposed on the first frame and the second frame. Each second reflective part includes a second reflective surface. The two second reflective surfaces are arranged opposite to each other. The cross-sectional shape of the two second reflective surfaces is two parabolas. The four endpoints of the two parabolas are connected to form two intersecting lines. The focal length of the parabola is related to the angle between the intersecting lines.

6. The photovoltaic module frame according to claim 1, characterized in that, Also includes: The base is connected to the bottom of the mounting frame, and the photovoltaic cell module includes solar cells, with a light-transmitting space formed between the solar cells and the side wall of the base. The reflective part further includes a third reflective part, which is located on the side wall and / or bottom wall of the base, and at least a portion of the third reflective part is located within the light-transmitting space.

7. The photovoltaic module frame according to claim 6, characterized in that, The cross-sectional shape of the third reflector is an isosceles triangle, and the vertex angle of the isosceles triangle is 30° to 120°.

8. The photovoltaic module frame according to claim 6, characterized in that, The surfaces of the first reflective part, the second reflective part, and the third reflective part are mirror surfaces; The top surface of the mounting frame and the bottom surface of the base are respectively provided with anti-slip protrusions and grooves. When multiple photovoltaic module frames are stacked, adjacent anti-slip protrusions and grooves are connected in cooperation.

9. The photovoltaic module frame according to any one of claims 1 to 8, characterized in that, The mounting frame is provided with an adhesive receiving groove, which is connected to the mounting groove and located on both sides of the mounting groove.

10. A photovoltaic module, characterized in that, include: Photovoltaic cell modules; The photovoltaic module frame as described in any one of claims 1 to 9, wherein the photovoltaic cell module is located within the mounting groove of the photovoltaic module frame.

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