Photovoltaic panels

Abstract

The present invention discloses a photovoltaic module, comprising a photovoltaic body and a plurality of frames, wherein the plurality of frames are arranged around the outer peripheral side of the photovoltaic body, and the frame comprises a bearing portion, a first limiting portion, and a second limiting portion connected in sequence. The maximum distance between the surface of the side of the second limiting portion of the first frame away from the light-facing surface and the light-facing surface is h1, and the maximum distance between the surface of the side of the second limiting portion of the second frame away from the light-facing surface and the light-facing surface is h2, wherein h1 and h2 satisfy: 1 / 10≤h1 / h2≤2 / 3. According to the photovoltaic module of the present invention, the structural strength of the second limiting portion of the first frame is ensured, and the plurality of frames are ensured to provide sufficient load-bearing strength for the photovoltaic body. At the same time, the less the second limiting portion blocks the photovoltaic body, the more it helps to ensure that the photovoltaic module has sufficient hydrophobic and drainage capabilities, thereby reducing the formation of dust accumulation belts, helping to reduce the risk of hot spots in the photovoltaic module, and also helping to increase the power generation of the photovoltaic module.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic modules, and in particular to a photovoltaic module. Background Art

[0002] The packaging process for photovoltaic module laminates primarily uses a frame that can clamp the laminate on all sides and is bonded with edge-sealing silicone. However, the photovoltaic laminate is a flat surface, and the frame clamping its front side creates a height difference, forming a front step, typically between approximately 2mm and 4mm. This height difference causes the photovoltaic module to form a cofferdam after outdoor installation. Rainwater will wash away dust and other stains attached to the laminate surface and deposit them within the cofferdam, forming a dense dust accumulation belt after drying. The thicker the frame portion above the front of the laminate, the lower the module installation angle, and the wider the dust accumulation belt, the larger the area of ​​the cells blocked, resulting in greater power generation loss.

[0003] The ideal solution is to remove the front edge of the laminate from the PV module frame, allowing running water to carry away any accumulated dust and stains, thus avoiding the formation of dust bands. However, this approach can easily reduce the overall load-bearing capacity of the PV module and leave the edges of the laminate unprotected, exposing them to the risk of breakage from impact. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a photovoltaic module that helps ensure that the photovoltaic module has sufficient water-repellent and drainage capabilities, thereby reducing the formation of dust accumulation zones, and at the same time helps reduce the risk of hot spots in the photovoltaic module, thereby facilitating an increase in the power generation of the photovoltaic module.

[0005] According to an embodiment of the present invention, a photovoltaic assembly includes: a photovoltaic body; a plurality of frames, wherein the plurality of frames are arranged around the outer peripheral side of the photovoltaic body, the frame includes a bearing portion, a first limiting portion and a second limiting portion connected in sequence, the bearing portion is opposite to the backlight surface of the photovoltaic body, the first limiting portion is opposite to the side surface of the photovoltaic body, and the second limiting portion is opposite to the light-facing surface of the photovoltaic body, the plurality of frames include a first frame and a second frame arranged adjacent to each other, the maximum distance between the side surface of the second limiting portion of the first frame away from the light-facing surface and the light-facing surface is h1, and the maximum distance between the side surface of the second limiting portion of the second frame away from the light-facing surface and the light-facing surface is h2, wherein h1 and h2 satisfy: 1 / 10≤h1 / h2≤2 / 3.

[0006] According to the photovoltaic assembly of the embodiment of the present invention, by setting the ratio of the maximum distance between the surface of the side of the second limiting portion of the first frame away from the light-facing surface and the light-facing surface and the maximum distance between the surface of the side of the second limiting portion of the second frame away from the light-facing surface and the light-facing surface, the structural strength of the second limiting portion of the first frame is ensured, and it is ensured that multiple frames can provide sufficient load-bearing strength for the photovoltaic body. At the same time, the less the second limiting portion blocks the photovoltaic body, the more it helps to ensure that the photovoltaic assembly has sufficient hydrophobic and drainage capabilities, thereby reducing the formation of dust accumulation belts, helping to reduce the risk of hot spots in the photovoltaic assembly, and also helping to increase the power generation of the photovoltaic assembly.

[0007] According to some embodiments of the present invention, h1 and h2 further satisfy: 1 / 8≤h1 / h2≤1 / 2.

[0008] According to some embodiments of the present invention, h1 and h2 respectively satisfy: 0.5mm≤h1≤3mm, 1.5mm≤h2≤5mm.

[0009] According to some embodiments of the present invention, h1 and h2 respectively satisfy: 0.5mm≤h1≤1.5mm, 1.5mm≤h2≤4mm.

[0010] According to some embodiments of the present invention, the second limiting portion of the first frame has a covering section covering the photovoltaic body, and the width of the covering section is smaller than the width of the edge of the light-facing surface covered by the second limiting portion of the second frame.

[0011] According to some embodiments of the present invention, the second limiting portion of the first frame has a covering segment covering the photovoltaic body, the width of the covering segment is w, and the width of the edge of the light-facing surface covered by the second limiting portion of the second frame is A, wherein w and A satisfy: 0.03≤w / A≤2.6667.

[0012] According to some embodiments of the present invention, w and A satisfy: 0.03≤w / A≤0.8.

[0013] According to some embodiments of the present invention, the second limiting portion of the first frame has a covering section covering the photovoltaic body, and the width of the covering section is w, wherein w satisfies: 0.3mm<w≤3mm.

[0014] According to some embodiments of the present invention, the second limiting portion of the first frame has a covering segment covering the photovoltaic body, and the thickness of the covering segment is smaller than the thickness of the remaining portion of the second limiting portion of the first frame excluding the covering segment.

[0015] According to some embodiments of the present invention, along a direction away from the first limiting portion, at least one side surface of the covering segment in a thickness direction extends obliquely toward another side surface.

[0016] According to some embodiments of the present invention, the minimum thickness of the covering segment is t1, and the maximum thickness of the remaining portion of the second limiting portion of the first frame excluding the covering segment is t2, wherein t1 and t2 satisfy: 0.2≤t1 / t2<1.

[0017] According to some embodiments of the present invention, the thickness of the covering section is t, wherein t satisfies: 0.2 mm ≤ t ≤ 2 mm.

[0018] According to some embodiments of the present invention, the end face of one end of the first frame adjacent to the second frame extends obliquely in a direction away from the second frame; or, the end of the first frame has a notch, and the first frame is separated from the end of the second frame by the notch, and the width of the notch is G, wherein G satisfies: 1mm≤G≤100mm.

[0019] According to some embodiments of the present invention, an end edge of the second frame adjacent to the first frame has a chamfer.

[0020] According to some embodiments of the present invention, the height of the first frame in the thickness direction of the photovoltaic body is H1, and the height of the second frame in the thickness direction of the photovoltaic body is H2, wherein H1 and H2 satisfy: 1 / 2≤H1 / H2<1; and / or, H1 and H2 respectively satisfy: 10mm≤H1<40mm, 20mm≤H2≤40mm.

[0021] According to some embodiments of the present invention, H1 and H2 satisfy: 4 / 5≤H1 / H2<19 / 20; and / or, H1 and H2 respectively satisfy: 20mm≤H1≤38mm, 25mm≤H2≤40mm.

[0022] According to some embodiments of the present invention, a surface of the second limiting portion of the second frame, which is away from the light-facing surface, has a friction pattern.

[0023] According to some embodiments of the present invention, the length of the first frame is smaller than the length of the second frame.

[0024] According to some embodiments of the present invention, the photovoltaic body includes: a photovoltaic cell layer; a front transparent cover plate, the front transparent cover plate is arranged on the light-facing side of the photovoltaic cell layer; a back transparent cover plate, the back transparent cover plate is arranged on the backlight side of the photovoltaic cell layer, the back transparent cover plate has a first side surface that is completely embedded in the first frame and a second side surface that is completely embedded in the second frame; a reflective layer, located on the surface of the back transparent cover plate facing the front transparent cover plate, the reflective layer includes a first edge segment and a second edge segment, the first edge segment is arranged adjacent to the first frame and extends in the same direction as the extension direction of the first frame; the second edge segment is arranged adjacent to the second frame and extends in the same direction as the extension direction of the second edge; wherein, the distance between the edge of the first edge segment facing the first frame and the first side surface is d1, and the distance between the edge of the second edge segment facing the second frame and the second side surface is d2, and d1 is smaller than d2.

[0025] According to some embodiments of the present invention, d1 and d2 satisfy: 0mm≤d1≤2mm, 3mm≤d2≤10mm.

[0026] According to some embodiments of the present invention, the second limiting portion of the first frame has a covering section covering the photovoltaic body, the covering section has a width of w, and w and d1 satisfy: d1≤(w+1mm).

[0027] According to some embodiments of the present invention, the width of the first edge segment in a direction perpendicular to the extension direction of the first edge segment is Ts, and the width of the second edge segment in a direction perpendicular to the extension direction of the second edge segment is T1, wherein Ts>T1.

[0028] According to some embodiments of the present invention, Ts and T1 satisfy: 10mm≤Ts≤25mm, 7mm≤T1≤16mm.

[0029] According to some embodiments of the present invention, the distance between the edge of the first edge segment facing the first frame and the outer side wall of the first limiting portion of the first frame is Qs, and the distance between the outer edge of the second edge segment and the outer side wall of the first limiting portion of the second frame is Q1, wherein Qs satisfies: 1mm≤Qs≤8mm; and Q1 satisfies: 4mm≤Q1≤11mm.

[0030] According to some embodiments of the present invention, the Qs satisfies: 2mm≤Qs≤6mm; and the Q1 satisfies: 4mm≤Q1≤10mm.

[0031] According to some embodiments of the present invention, the width of the supporting portion of the first frame is n, and the width of the second limiting portion in the width direction of the supporting portion is b, wherein n and b satisfy: 0.05≤b / n≤1.5715.

[0032] According to some embodiments of the present invention, the thickness of the second limiting portion in the height direction of the bearing portion is t, and the height of the first frame in the height direction of the bearing portion is H1, wherein H1 satisfies: 0.0075≤t / H1≤0.1334.

[0033] According to some embodiments of the present invention, the minimum thickness of the second limiting portion of the first frame in the height direction of the supporting portion is t1, and the thickness of the photovoltaic body of the photovoltaic assembly in the height direction of the supporting portion is g1, wherein t1 and g1 satisfy: 0.03<t1 / g1<0.3.

[0034] According to some embodiments of the present invention, the first frame further includes: a first rubber stop tooth, one end of the first rubber stop tooth is connected to an end of the second limiting portion adjacent to the first limiting portion, and the other end of the first rubber stop tooth extends toward the bearing portion.

[0035] According to some embodiments of the present invention, the first frame further includes: a third limiting portion, one end of the third limiting portion is connected to the first limiting portion, and the other end of the third limiting portion extends in a direction away from the first limiting portion, and the third limiting portion, the second limiting portion and the bearing portion are located on the same side of the thickness direction of the first limiting portion.

[0036] According to some embodiments of the present invention, the first frame further includes: a second rubber stop tooth, one end of the second rubber stop tooth is connected to the first limiting portion, the other end of the second rubber stop tooth extends in a direction away from the first limiting portion, and the second rubber stop tooth, the second limiting portion and the bearing portion are located on the same side in the thickness direction of the first limiting portion.

[0037] According to some embodiments of the present invention, the one end of the second rubber-stopping tooth is connected to an end of the first limiting portion adjacent to the second limiting portion.

[0038] According to some embodiments of the present invention, one end of the second rubber-blocking tooth is connected between the one end of the second limiting portion and the other end of the first limiting portion, and the other end of the second rubber-blocking tooth extends obliquely toward the bearing portion.

[0039] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0041] Figure 1 is a schematic diagram of a photovoltaic assembly according to an embodiment of the present invention;

[0042] Figure 2 yes Figure 1 The enlarged view of section A shown in the middle circle;

[0043] Figure 3 is a partial schematic diagram of a first frame and a photovoltaic body of a photovoltaic assembly according to a first embodiment of the present invention;

[0044] Figure 4 yes Figure 3 A partial schematic diagram of a first frame of a photovoltaic assembly shown in ;

[0045] Figure 5 is a partial schematic diagram of a second frame and a photovoltaic body of a photovoltaic module according to an embodiment of the present invention;

[0046] Figure 6 is a partial schematic diagram of a first frame and a photovoltaic assembly according to a second embodiment of the present invention;

[0047] Figure 7 is a partial schematic diagram of a first frame of a photovoltaic assembly according to a second embodiment of the present invention;

[0048] Figure 8 yes Figure 6 A partial schematic diagram of a first frame of a photovoltaic assembly shown in ;

[0049] Figure 9 is a partial schematic diagram of a first frame of a photovoltaic assembly according to a third embodiment of the present invention;

[0050] Figure 10 is a partial schematic diagram of a first frame of a photovoltaic assembly according to a fourth embodiment of the present invention;

[0051] Figure 11 is a partial schematic diagram of a first frame of a photovoltaic assembly according to a fifth embodiment of the present invention;

[0052] Figure 12 is a partial schematic diagram of a first frame of a photovoltaic assembly according to a sixth embodiment of the present invention;

[0053] Figure 13 is a partial schematic diagram of a first frame of a photovoltaic assembly according to a seventh embodiment of the present invention;

[0054] Figure 14is a partial schematic diagram of a first frame of a photovoltaic assembly according to an eighth embodiment of the present invention;

[0055] Figure 15 is a partial schematic diagram of a first frame and a photovoltaic body of a photovoltaic assembly according to another embodiment of the present invention;

[0056] Figure 16 is a partial schematic diagram of a second frame and a photovoltaic body of a photovoltaic assembly according to another embodiment of the present invention;

[0057] Figure 17 is a partial schematic diagram of a photovoltaic body according to an embodiment of the present invention;

[0058] Figure 18 is a partial schematic diagram of the application of a photovoltaic assembly according to an embodiment of the present invention;

[0059] Figure 19 is a partial schematic diagram of a photovoltaic assembly according to an embodiment of the present invention;

[0060] Figure 20 is another partial schematic diagram of a photovoltaic assembly according to an embodiment of the present invention.

[0061] Reference numerals:

[0062] 100: Photovoltaic panels;

[0063] 1: Photovoltaic body; 11: Photovoltaic cell layer; 12: Front transparent cover; 13: Back transparent cover; 131: First side; 132: Second side; 14: Reflective layer; 141: First edge segment; 142: Second edge segment;

[0064] 2: Frame; 21: Load-bearing part; 22: First limiting part; 23: Second limiting part; 231: Covering section; 232: Friction pattern; 233: First limiting section; 234: Second limiting section; 235: Third limiting section; 24: First frame; 25: Second frame; 251: Chamfer; 28: First rubber stop; 29: Third limiting part; 280: Second rubber stop; 3: Backlight surface; 4: Light-facing surface; 5: Colloid; 6: Notch. DETAILED DESCRIPTION

[0065] Reference below Figures 1-20 A photovoltaic assembly 100 according to an embodiment of the present invention is described.

[0066] like Figures 1-20 As shown, a photovoltaic assembly 100 according to an embodiment of the present invention includes a photovoltaic body 1 and a plurality of frames 2. In the description of the present invention, "plurality" means two or more.

[0067] Specifically, multiple frames 2 are arranged around the outer periphery of the photovoltaic body 1, and the frame 2 includes a bearing portion 21, a first limiting portion 22 and a second limiting portion 23 connected in sequence. The bearing portion 21 is opposite to the backlight surface 3 of the photovoltaic body 1, the first limiting portion 22 is opposite to the side of the photovoltaic body 1, and the second limiting portion 23 is opposite to the light-facing surface 4 of the photovoltaic body 1. The multiple frames 2 include a first frame 24 and a second frame 25 arranged adjacent to each other. The maximum distance between the side surface of the second limiting portion 23 of the first frame 24 away from the light-facing surface 4 and the light-facing surface 4 is h1, and the maximum distance between the side surface of the second limiting portion 23 of the second frame 25 away from the light-facing surface 4 and the light-facing surface 4 is h2, wherein h1 and h2 satisfy: 1 / 10≤h1 / h2≤2 / 3.

[0068] For example, in Figures 1-18 In the example, multiple frames 2 are sequentially arranged along the circumference of the photovoltaic body 1, so as to utilize the multiple frames 2 to protect the circumference of the photovoltaic body 1 and provide sufficient protection and load resistance strength for the photovoltaic body 1. The bearing portion 21 and the second limiting portion 23 of each frame 2 are arranged on both sides of the thickness direction of the photovoltaic module 100, and the same side of the bearing portion 21 and the second limiting portion 23 in the width direction is connected to the first limiting portion 22, so as to utilize the space defined by the bearing portion 21, the first limiting portion 22 and the second limiting portion 23 to enclose at least part of the circumference of the photovoltaic module 100, wherein the bearing portion 21 is opposite to the backlight surface 3 of the photovoltaic module 100, the second limiting portion 23 is opposite to the light-facing surface 4 of the photovoltaic module 100, and the first limiting portion 22 is opposite to the side of the photovoltaic module 100. The edge position of the light-facing surface 4 of the photovoltaic body 1 corresponds to the second limiting portion 23, so that the second limiting portion 23 can be used to provide sufficient protection for the photovoltaic body 1 to prevent the edge chamfers of the photovoltaic body 1 from being exposed and causing explosions due to collisions. At the same time, it is beneficial to ensure that there is no gap between the photovoltaic body 1 and the frame 2, preventing water and dust from entering.

[0069] The first frame 24 and the second frame 25 in the plurality of photovoltaic modules 100 are arranged adjacent to each other, and can be the first frame 24, the second frame 25, the first frame 24 and the second frame 25 in sequence. No specific limitation is given here. The maximum height difference between the surface of the side away from the bearing part 21 in the thickness direction of the second limiting portion 23 of the first frame 24 and the light-facing surface 4 of the photovoltaic body 1 is less than the maximum height difference between the surface of the side away from the bearing part 21 in the thickness direction of the second limiting portion 23 of the second frame 25 and the light-facing surface 4 of the photovoltaic body 1. During use, the photovoltaic module 100 is tilted, and one side of the first frame 24 of the photovoltaic module 100 is located at the lowest position of the photovoltaic module 100, which helps to make rainwater flow along the light-facing surface 4 of the photovoltaic module 100 and then flow out along the surface of the second limiting portion 23 of the first frame 24 away from the light-facing surface 4.

[0070] Reference Figure 5 and Figure 6 When the ratio of h1 of the first frame 24 to h2 of the second frame 25 is less than 1 / 10, h1 of the first frame 24 is smaller than h2 of the second frame 25, and the structural strength of the second limiting portion 23 of the first frame 24 is relatively small, making it difficult to ensure that the first frame 24 stably surrounds the light-facing surface 4 of the photovoltaic module 100; when the ratio of h1 of the first frame 24 to h2 of the second frame 25 is greater than 2 / 3, h1 of the first frame 24 is larger than h2 of the second frame 25, so that the space jointly defined by the second limiting portion 23 of the first frame 24 and the light-facing surface 4 of the photovoltaic body 1 is larger, and rainwater is difficult to flow out smoothly, so that more rainwater and dust and other stains are deposited to form a dust accumulation belt, which blocks a larger area of ​​the light-facing surface 4 of the photovoltaic body 1, easily increasing the risk of hot spots of the photovoltaic module 100 and easily causing a large loss of power generation. Therefore, by setting the ratio of the maximum distance between the side surface of the second limiting portion 23 of the first frame 24 away from the light-facing surface 4 and the light-facing surface 4 to the maximum distance between the side surface of the second limiting portion 23 of the second frame 25 away from the light-facing surface 4 and the light-facing surface 4 to 1 / 10≤h1 / h2≤2 / 3, the structural strength of the second limiting portion 23 of the first frame 24 is ensured, which helps to ensure that the photovoltaic component 100 has sufficient hydrophobic and drainage capabilities, thereby reducing the formation of dust accumulation belts. At the same time, the less the second limiting portion 23 blocks the photovoltaic body 1, the more it helps to reduce the risk of hot spots in the photovoltaic component 100 and improve the power generation of the photovoltaic component 100.

[0071] During actual use, the photovoltaic module 100 is tilted at a certain angle, and the water flows along the surface of the photovoltaic body 1 to the same level as the water surface and the highest position of the second limiting portion 23 of the first frame 24. Then, due to the tension and siphon effect of the water, the water contacts the end face of the second frame 25 adjacent to the first frame 24 to form a diversion channel, so that the water flows around the highest point of the second limiting portion 23 of the first frame 24 to flow out, thereby realizing drainage and hydrophobicity of the photovoltaic module 100.

[0072] In addition, the thickness of the second limiting portion 23 of the first frame 24 is relatively thin, so when water flows through the second limiting portion 23 of the first frame 24 toward the edge of one side of the center of the photovoltaic body 1, the above-mentioned edge destroys the surface tension of the water, which is conducive to breaking the water film and helping to increase the water guiding effect on one side of the first frame 24.

[0073] The second frame 25 may be conventionally configured so that the second frame 25 can stably and effectively surround and clamp at least a portion of the circumference of the photovoltaic body 1 , thereby ensuring the structural stability of the photovoltaic assembly 100 .

[0074] Therefore, the photovoltaic module 100 maintains the conventional pressing block installation method of the photovoltaic module 100 unchanged (the matching relationship between the first frame 24 and the second frame 25 and the pressing block remains unchanged) while achieving drainage without dirt accumulation. The frame 2 can also provide sufficient protection and load resistance strength for the photovoltaic body 1.

[0075] According to the photovoltaic module 100 of the embodiment of the present invention, by setting the ratio of the maximum distance between the side surface of the second limiting portion 23 of the first frame 24 away from the light-facing surface 4 and the light-facing surface 4 and the maximum distance between the side surface of the second limiting portion 23 of the second frame 25 away from the light-facing surface 4 and the light-facing surface 4, the structural strength of the second limiting portion 23 of the first frame 24 is ensured, and it is ensured that the multiple frames 2 can provide sufficient load-bearing strength for the photovoltaic body 1. At the same time, the less the second limiting portion 23 blocks the photovoltaic body 1, the more it helps to ensure that the photovoltaic module 100 has sufficient hydrophobic and drainage capabilities, thereby reducing the formation of dust accumulation belts, helping to reduce the risk of hot spots in the photovoltaic module 100, and also helping to improve the power generation of the photovoltaic module 100.

[0076] According to some embodiments of the present invention, referring to Figure 5 and Figure 6 , h1 and h2 further satisfy: 1 / 8 ≤ h1 / h2 ≤ 1 / 2. The ratio of the maximum distance between the surface of the second limiting portion 23 of the first frame 24, which is away from the light-facing surface 4, and the light-facing surface 4 to the maximum distance between the surface of the second limiting portion 23 of the second frame 25, which is away from the light-facing surface 4, and the light-facing surface 4 is more reasonable. This ensures the structural strength and load-bearing strength of the first frame 24 while facilitating the full drainage of water falling on the light-facing surface 4 of the photovoltaic module 100, thereby minimizing the area where the dust accumulation zone is formed and increasing the power generation of the photovoltaic module 100.

[0077] According to some embodiments of the present invention, referring to Figure 5 and Figure 6, h1, h2 respectively satisfy: 0.5mm≤h1≤3mm, 1.5mm≤h2≤5mm; preferably 0.5mm≤h1≤1.5mm, 1.5mm≤h2≤4mm. The above-mentioned maximum distance between the side surface of the second limiting portion 23 of the first frame 24 away from the light-facing surface 4 and the light-facing surface 4 and the maximum distance between the side surface of the second limiting portion 23 of the second frame 25 away from the light-facing surface 4 and the light-facing surface 4 are reasonably limited. While fully ensuring the structural strength and load resistance of the first frame 24 and the second frame 25, it is conducive to making the ratio of the maximum distance between the side surface of the second limiting portion 23 of the first frame 24 away from the light-facing surface 4 and the maximum distance between the side surface of the second limiting portion 23 of the second frame 25 away from the light-facing surface 4 and the light-facing surface 4 meet the requirements, so that the multiple frames 2 of the photovoltaic module 100 can meet the use of the pressing block installation, and the second limiting portion 23 of the first frame 24 meets the drainage and hydrophobicity requirements of the photovoltaic module 100.

[0078] According to some embodiments of the present invention, referring to Figure 3 and Figure 7 The second limiting portion 23 of the first frame 24 includes a covering section 231 that covers the photovoltaic body 1. The width of the covering section 231 is smaller than the width of the edge of the second limiting portion 23 of the second frame 25 covering the light-facing surface 4. In other words, the second limiting portion 23 of the first frame 24 covers the edge of the light-facing surface 4 with a smaller width, while the second limiting portion 23 of the second frame 25 covers the edge of the light-facing surface 4 with a larger width. The second limiting portion 23 of the first frame 24 has a smaller thickness. If the second limiting portion 23 of the first frame 24 is wider, it may easily bend or twist due to the presence of loads such as a pressure block, or the second limiting portion 23 may be easily deformed or cracked under the pressure of the colloid 5. Therefore, setting the width of the second limiting portion 23 of the first frame 24 to be smaller helps reduce the risk of deformation and cracking of the second limiting portion 23, thereby extending the service life of the first frame 24. The second frame 25 has a larger thickness, so it is suitable for meeting the structural strength and load resistance requirements over a wider width range.

[0079] According to some embodiments of the present invention, referring to Figure 5 、 Figure 6 and Figure 8The second limiting portion 23 of the first frame 24 has a covering section 231 covering the photovoltaic body 1, and the width of the covering section 231 is w. The width of the edge of the light-facing surface 4 covered by the second limiting portion 23 of the second frame 25 is A, wherein w and A satisfy: 0.03≤w / A≤2.6667; preferably 0.03≤w / A≤0.8; further preferably 0.05≤w / A≤0.2857. In addition, it can be preferably 0.1≤w / A≤0.2571. Therefore, the ratio of the width of the covering section 231 to the width of the edge of the light-facing surface 4 covered by the second limiting portion 23 of the second frame 25 is relatively reasonable, which fully ensures the clamping stability of the second frame 25 and the first frame 24 on the photovoltaic body 1, while facilitating full play of the role of the second limiting portion 23 of the first frame 24, so as to enhance the hydrophobic and drainage effects of the photovoltaic module 100.

[0080] Further, refer to Figure 6 and Figure 8 The second limiting portion 23 of the first frame 24 has a covering section 231 that covers the photovoltaic body 1. The width of the covering section 231 is w, where w satisfies: 0.3mm<w≤3mm. When the width of the edge of the photovoltaic body 1 covered by the second limiting portion 23 of the first frame 24 is less than 0.3mm, the stability of the covering and enclosing of the edge of the light-facing surface 4 by the covering section 231 is low, and the position corresponding to the photovoltaic body 1 and the first frame 24 is easy to fall out during transportation or use, thereby reducing the structural stability and reliability of the photovoltaic assembly 100; when the width of the edge of the photovoltaic body 1 covered by the second limiting portion 23 of the first frame 24 is greater than 3mm, the width of the second limiting portion 23 is large, which is easy to reduce the structural strength of the second limiting portion 23, making the second limiting portion 23 prone to deformation or cracking. Therefore, the width of the edge of the photovoltaic body 1 covered by the second limiting portion 23 of the first frame 24 is set to 0.3mm<w≤3mm, so that the second limiting portion 23 can stably cover the edge position of the light-facing surface 4, which is conducive to ensuring the strength of the second limiting portion 23 and extending the service life of the first frame 24. The edge position of the light-facing surface 4 of the photovoltaic body 1 corresponds to the second limiting portion 23, so that the second limiting portion 23 can be used to provide sufficient protection for the photovoltaic body 1 to avoid the edge chamfer of the photovoltaic body 1 from being exposed and bumped to cause explosion. At the same time, it is conducive to making there is no gap between the photovoltaic body 1 and the frame 2 to prevent water and dust from entering.

[0081] According to other embodiments of the present invention, Figure 3 and Figure 4 ,as well as Figure 6-Figure 15The second limiting portion 23 of the first frame 24 includes a covering section 231 that covers the photovoltaic body 1. The thickness of the covering section 231 is less than the thickness of the remaining portion of the second limiting portion 23 of the first frame 24 excluding the covering section 231. The covering section 231 of the second limiting portion 23 of the first frame 24 is adapted to face the surface of the photovoltaic body 1 facing the light-facing surface 4. This prevents the photovoltaic body 1 from excessively moving toward the first limiting portion 22, thereby facilitating the placement of the colloid 5 between the photovoltaic body 1 and the first frame 24, thereby increasing the stability and reliability of the connection between the first frame 24 and the photovoltaic body 1.

[0082] Among them, the thickness of the rest of the second limiting portion 23 except the covering section 231 is relatively large, which helps to ensure the structural strength of the second limiting portion 23; the thickness of the covering section 231 is relatively small, which is conducive to enhancing the effect of the end of the covering section 231 away from the first limiting portion 22 on puncturing the water film, thereby helping to improve the drainage and hydrophobic efficiency of the photovoltaic component 100.

[0083] Further, refer to Figure 3 and Figure 4 ,as well as Figure 6-Figure 15 At least one side surface of the covering section 231 in the thickness direction extends obliquely toward another side surface in a direction away from the first limiting portion 22. This makes the end of the covering section 231 away from the first limiting portion 22 more pointed, thereby facilitating the disruption of water surface tension and increasing the ability of the covering section 231 to pierce the water film, further enhancing the hydrophobicity and drainage efficiency of the photovoltaic module 100. Furthermore, the oblique extension of the covering section 231 away from the supporting portion 21 toward the side adjacent to the supporting portion 21 helps guide water flow, thereby further enhancing the hydrophobicity and drainage efficiency of the photovoltaic module 100.

[0084] In addition, refer to Figure 8The minimum thickness of the covering section 231 is t1, and the maximum thickness of the remaining portion of the second limiting portion 23 of the first frame 24 excluding the covering section 231 is t2, where t1 and t2 satisfy the following conditions: 0.1≤t1 / t2<1, preferably 0.2≤t1 / t2<1. When the ratio of the minimum thickness of the covering section 231 to the maximum thickness of the remaining portion of the second limiting portion 23 of the first frame 24 excluding the covering section 231 is less than 0.2, the minimum thickness of the covering section 231 is small and prone to breakage. When the ratio of the minimum thickness of the covering section 231 to the maximum thickness of the remaining portion of the second limiting portion 23 of the first frame 24 excluding the covering section 231 is greater than or equal to 1, the minimum thickness of the covering section 231 is increased, which tends to reduce the destructive force of the surface tension of water on the end of the covering section 231 away from the first limiting portion 22, thereby reducing the drainage and hydrophobic effects of the photovoltaic module 100. Therefore, by setting the ratio of the minimum thickness of the covering section 231 to the maximum thickness of the remaining parts of the second limiting portion 23 of the first frame 24 except the covering section 231 to 0.2≤t1 / t2<1, it helps to ensure the structural strength of the first frame 24 while increasing the destructive force of the surface tension of water at the minimum thickness of the covering section 231 (i.e., the end of the covering section 231 away from the first limiting portion 22), thereby improving the drainage and hydrophobic effects of the photovoltaic module 100.

[0085] According to other embodiments of the present invention, Figure 7 , the thickness of the covering section 231 is t, where t satisfies: 0.2mm≤t≤2mm. When the thickness of the covering section 231 is less than 0.2mm, the structural strength of the covering section 231 is relatively low, making it difficult to stably and reliably cover the edge of the photovoltaic module 100, and easily reducing the service life of the first frame 24. When the thickness of the covering section 231 is greater than 2mm, the thickness of the covering section 231 is relatively large, which easily reduces the destructive force of the end of the covering section 231 away from the first limiting portion 22 on the surface tension of water, thereby reducing the drainage and hydrophobic effects of the photovoltaic module 100. Therefore, by setting the thickness of the covering section 231 to 0.2mm≤t≤2mm, it helps to ensure the structural strength of the covering section 231, extend the service life of the first frame 24, and help to enhance the destructive force of the covering section 231 on the surface tension of water, thereby improving the drainage and hydrophobic effects of the photovoltaic module 100.

[0086] The width of the edge of the backlight surface 3 covered by the supporting portion 21 of the first frame 24 and the edge of the backlight surface 3 covered by the supporting portion 21 of the second frame 25 may be equal or different, which is not specifically limited here.

[0087] Reference Figure 5 and Figure 6, when the width of the edge of the backlight surface 3 covered by the supporting portion 21 of the first frame 24 is smaller than the width of the edge of the backlight surface 3 covered by the supporting portion 21 of the second frame 25. The width of the second limiting portion 23 of the first frame 24 is smaller, and the coverage area of ​​the light-facing surface 4 of the photovoltaic body 1 is limited. Therefore, the width of the edge of the backlight surface 3 covered by the supporting portion 21 of the first frame 24 is larger, which helps to increase the stability of the enclosing of the photovoltaic body 1 by the supporting portion 21 and the second limiting portion 23, and ensure the load resistance of the first frame 24.

[0088] The width of the edge of the backlight surface 3 covered by the supporting portion 21 of the second frame 25 is relatively small, but the width of the edge of the light-facing surface 4 covered by the second limiting portion 23 of the second frame 25 alone is relatively large, which can effectively reduce the cost of the photovoltaic module 100 while meeting the load-bearing capacity requirements of the second frame 25.

[0089] According to other embodiments of the present invention, Figure 19 The end surface of the first frame 24 adjacent to the second frame 25 extends obliquely away from the second frame 25. In other words, the end surface of the first frame 24 at the end opposite the second frame 25 is chamfered so that the distance between the end surface and the end surface of the second frame 25 adjacent to the first frame 24 gradually increases away from the light-facing surface 4. This facilitates water flow along the area between the end surface of the first frame 24 and the end surface of the second frame 25 adjacent to the first frame 24, thereby further improving the drainage and water-repellent efficiency of the photovoltaic module 100.

[0090] Among them, the end face of one end of the first frame 24 adjacent to the second frame 25 and the corresponding end face of the second frame 25 are splicing parts, and the above two splicing angles are complementary, that is, when the angle of one of them is ∠A, the angle of the other end face is ∠B=90°-∠A.

[0091] Reference Figure 20The end of the first frame 24 has a notch 6 (not shown). This notch 6 separates the first frame 24 from the end of the second frame 25. The width of the notch 6 is G, where G satisfies the following: 1 mm ≤ G ≤ 100 mm. The notch 6 separates the first frame 24 and the second frame 25, facilitating the drainage and water-repelling efficiency of the photovoltaic module 100. Among them, when the width of the gap 6 is less than 1mm, when water flows through the gap 6, the water molecules on the surfaces of the first frame 24 and the second frame 25 on both sides of the gap 6 will be adsorbed on the end surfaces of the first frame 24 and the second frame 25 due to viscosity, forming a boundary layer (a thin layer with a flow rate close to zero). The water molecules in the middle area need to overcome the friction resistance of the boundary layer to flow, resulting in a decrease in the overall flow rate. Moreover, the narrower the gap 6, the larger the proportion occupied by the boundary layer, the smaller the effective flow area, and the more obvious the flow rate attenuation. When the width of the gap 6 is greater than 100mm, the enclosed area of ​​the frame 2 in the circumferential direction of the photovoltaic body 1 is reduced, thereby reducing the stability of the multiple frames 2 clamping the photovoltaic body 1, and further reducing the structural stability of the photovoltaic module 100. Therefore, by setting the width of the gap 6 to 1mm≤G≤100mm, it helps to improve the discharge efficiency of the water flow while ensuring the structural stability of the photovoltaic module 100.

[0092] According to some embodiments of the present invention, referring to Figure 19 The end edge of the second frame 25 adjacent to the first frame 24 has a chamfer 251. Since the thickness of the second limiting portion 23 of the second frame 25 is greater than the thickness of the second limiting portion 23 of the first frame 24, the end of the second frame 25 adjacent to the first frame 24 protrudes from the surface of the first frame 24. By providing the above-mentioned end edge of the second frame 25 with a chamfer 251, it is possible to effectively avoid safety hazards caused by the relatively sharp end edge, such as avoiding scratches on transporters, etc., thereby helping to improve the safety of the photovoltaic module 100.

[0093] According to some further embodiments of the present invention, Figure 5 and Figure 6, the height of the first frame 24 in the thickness direction of the photovoltaic body 1 is H1, and the height of the second frame 25 in the thickness direction of the photovoltaic body 1 is H2, wherein H1 and H2 satisfy: 1 / 2≤H1 / H2<1, preferably 4 / 5≤H1 / H2<19 / 20. Therefore, the ratio of the height of the first frame 24 in the thickness direction of the photovoltaic body 1 to the height of the second frame 25 in the thickness direction of the photovoltaic body 1 is relatively reasonable, so that the first frame 24 is shorter than the second frame 25, which is conducive to reducing the hydrophobic and drainage effects at the first frame 24. At the same time, the ratio of the height of the first frame 24 in the thickness direction of the photovoltaic body 1 to the height of the second frame 25 in the thickness direction of the photovoltaic body 1 is relatively reasonable, ensuring that the first frame 24 and the second frame 25 support each other, thereby improving the support stability of the photovoltaic body 1.

[0094] H1 and H2 satisfy the following conditions: 1 / 2≤H1 / H2<1, preferably 4 / 5≤H1 / H2<19 / 20; and / or H1 and H2 respectively satisfy the following conditions: 10mm≤H1<40mm, 20mm≤H2≤40mm, preferably 20mm≤H1≤38mm, 25mm≤H2≤40mm. The height of the first frame 24 in the thickness direction of the photovoltaic body 1 and the height of the second frame 25 in the thickness direction of the photovoltaic body 1 are both relatively reasonable, ensuring the structural strength and service life of the first and second frames 24, 25, fully meeting the requirement for the second frame 25 to stably and reliably support the circumference of the photovoltaic body 1, ensuring the stable placement of the frame 2 in the circumference of the photovoltaic body 1 while improving the efficiency of drainage and water repellency.

[0095] According to some embodiments of the present invention, referring to Figure 5 and Figure 16 The second limiting portion 23 of the second frame 25 has a friction pattern 232 on the side thereof facing away from the light-facing surface 4. Thus, the friction pattern 232 on the second limiting portion 23 of the second frame 25 can increase the friction coefficient between the second frame 25 and the pressing block, thereby ensuring that the pressing block can be properly installed. At the same time, the second frame 25 can effectively protect the photovoltaic body 1 from external impacts, and also ensure that the load capacity of the photovoltaic module 100 will not be reduced.

[0096] According to other embodiments of the present invention, Figure 1 The length of the first frame 24 is smaller than that of the second frame 25. Thus, the second frame 25 is longer and the first frame 24 is shorter, thereby ensuring the stability and reliability of the second frame 25 in enclosing and clamping the photovoltaic body 1, ensuring the structural strength of the photovoltaic module 100, and at the same time utilizing the first frame 24 to achieve the hydrophobic and drainage effects of the photovoltaic module 100.

[0097] Double-glass, double-sided photovoltaic modules 100 typically use transparent film and transparent glass on both the light-facing side 4 and the backlight side 3. This allows the photovoltaic cells on the backlight side 3 to also receive natural light reflected from other objects on the ground, thereby generating electricity on the backlight side 3 and increasing overall power generation. Because solar cells on the light-facing side 4 generate electricity more efficiently than those on the backlight side 3, special treatment is typically performed on the inner side of the glass on the backlight side 3 to further reflect incident light between each cell and from the non-power-generating areas of the photovoltaic body 1 toward the light-facing side 4 of the cells. This prevents light from being wasted by passing through the glass and into the photovoltaic module 100, allowing the photovoltaic module 100 to capture light more thoroughly.

[0098] The more mature grid glass manufacturing process uses methods such as screen printing to apply a designed grid shape to the glass on the backlight surface 3 with a white glaze, which is then sintered and cured at high temperature. However, because the top of the frame 2 of a conventional photovoltaic module 100 has a large covering section 231, the white glaze typically does not cover the edge of the glass. Therefore, when using a photovoltaic module 100 with the frame 2 of the present invention and conventional white glaze glass, the edge of the photovoltaic body 1 will have a transparent area due to the narrow width of the covering section 231.

[0099] More advanced transparent glass preparation processes use methods such as high-reflective coatings and high-reflective films to further capture incident light that falls into the gaps between cells and between cell strings, efficiently reflecting it to the power generation area of ​​the cell, greatly increasing the power generation efficiency of the photovoltaic module 100. Typically, this type of photovoltaic module 100 is paired with a conventional frame 2 with a large covering section 231 at the top, which will cover the edge of the photovoltaic body 1. Therefore, high-reflective coatings and high-reflective films are not considered to cover the edge. However, the width of the covering section 231 of the first frame 24 of the present invention is smaller, so the edge of the photovoltaic body 1 can also be exposed to light. And because the glass is fully transparent, this area is wider than the transparent area of ​​the white glaze edge of the grid glass.

[0100] In the above two processes, the transparent glass at the edge of the photovoltaic body 1 is exposed when the above-mentioned first frame 24 is used, causing light to directly pass through the glass and leave the effective reflective environment in the photovoltaic body 1, resulting in light waste; the colloid 5 that was not originally exposed to sunlight is directly exposed to the sun for a long time, making the working conditions even worse, further increasing the anti-ultraviolet and aging resistance requirements of the colloid 5, resulting in increased costs; since the colloid 5 under the photovoltaic body 1 is directly exposed as a whole, in addition to meeting the reliability standards, there are further requirements for the appearance of the colloid 5 under the glass, which increases the difficulty of the production process and increases the manufacturing cost.

[0101] In order to avoid the above defects, the photovoltaic module 100 of the present invention not only proposes an optimized design of the frame 2 , but also improves the design of the photovoltaic body 1 .

[0102] According to other embodiments of the present invention, Figure 15 and Figure 16 The photovoltaic body 1 includes a photovoltaic cell layer 11, a front transparent cover plate 12, a back transparent cover plate 13, and a reflective layer 14. The front transparent cover plate 12 is disposed on the light-facing surface 4 of the photovoltaic cell layer 11, and the back transparent cover plate 13 is disposed on the backlight surface 3 of the photovoltaic cell layer 11. The back transparent cover plate 13 has a first side surface 131 completely embedded in the first frame 24 and a second side surface 132 completely embedded in the second frame 25. The reflective layer 14 is located on the surface of the back transparent cover 13 facing the front transparent cover 12. The reflective layer 14 includes a first edge segment 141 and a second edge segment 142. The first edge segment 141 is arranged adjacent to the first frame 24 and extends in the same direction as the extension direction of the first frame 24; the second edge segment 142 is arranged adjacent to the second frame 25 and extends in the same direction as the extension direction of the second edge; wherein, the distance between the edge of the first edge segment 141 facing the first frame 24 and the first side surface 131 is d1, and the distance between the edge of the second edge segment 142 facing the second frame 25 and the second side surface 132 is d2, and d1 is less than d2.

[0103] Along the thickness direction of the photovoltaic module 100, the front transparent cover plate 12, the photovoltaic cell layer 11, and the back transparent cover plate 13 are arranged in sequence. The reflective layer 14 is located on the surface of the back transparent cover plate 13 facing the front transparent cover plate 12. The reflective layer 14 can reflect sunlight that impinges on the reflective layer 14 back onto the photovoltaic cell layer 11, thereby increasing the power generation of the photovoltaic module 100. The second limiting portion 23 of the first frame 24, located on the light-facing surface 4 of the photovoltaic body 1, has a relatively small width. This facilitates forming a larger light-transmitting area on the side of the front transparent cover plate 12 and the back transparent cover plate 13 adjacent to the first frame 24. Therefore, the distance between the edge of the first edge segment 141 facing the first frame 24 and the first side surface 131 is set relatively small. This facilitates reducing the distance between the edge of the first edge segment 141 facing the first frame 24 and the first side surface 131, ensuring that the first edge segment 141 fills the aforementioned larger light-transmitting area, thereby improving the power generation efficiency of the photovoltaic module 100. The second limiting portion 23 of the second frame 25, located on the light-facing surface 4 of the photovoltaic body 1, has a relatively large width. Therefore, the distance between the edge of the first edge segment 141 facing the first frame 24 and the first side surface 131 is set relatively large. This also minimizes the light-transmitting area adjacent to the second frame 25, thereby increasing the power generation of the photovoltaic module 100. The reflective layer 14 includes at least one of a white glaze coating, a high-reflective coating, a reflective film, an anti-drift white film, and a highly reflective white adhesive film.

[0104] Furthermore, d1 and d2 satisfy the following conditions: 0mm≤d1≤2mm, 3mm≤d2≤10mm. When the distance between the edge of the first edge segment 141 facing the first frame 24 and the first side surface 131 is greater than 2mm, a large area of ​​light-transmitting area is likely to exist on the side of the front transparent cover plate 12 and the back transparent cover plate 13 adjacent to the first frame 24, thereby easily reducing the power generation. Therefore, by setting the distance between the edge of the first edge segment 141 facing the first frame 24 and the first side surface 131 to 0mm≤d1≤2mm, compared to the traditional photovoltaic module 100 (the traditional photovoltaic module 100 has approximately 5mm of blank transparent area), the presence of the light-transmitting area is reduced, fully utilizing sunlight, and helping to increase the power generation of the photovoltaic module 100.

[0105] When the distance between the edge of the second edge segment 142 facing the second frame 25 and the second side surface 132 is less than 3 mm, the aforementioned distance is small. Due to the large width of the second limiting portion 23 of the second frame 25, the overlapping area between the second limiting portion 23 of the second frame 25 and the second edge segment 142 in a horizontal plane perpendicular to the thickness direction of the photovoltaic module 100 is large, resulting in a large amount of second edge segment 142 used and a high cost of the photovoltaic module 100. When the distance between the edge of the second edge segment 142 facing the second frame 25 and the second side surface 132 is greater than 10 mm, the aforementioned distance is large, forming a light-transmitting area in the horizontal plane between the second edge segment 142 and the end of the second limiting portion 23 of the second frame 25 away from the first limiting portion 22, thereby reducing the luminous efficiency of the photovoltaic module 100. Therefore, by setting the distance between the edge of the second edge segment 142 facing the second frame 25 and the second side surface 132 to 3 mm ≤ d2 ≤ 10 mm, it helps to ensure that the second edge segment 142 maximizes the power generation of the photovoltaic module 100 while minimizing the cost of the photovoltaic module 100. d2 is preferably 3mm≤d2≤8mm.

[0106] According to some embodiments of the present invention, referring to Figure 15 The second limiting portion 23 of the first frame 24 includes a covering section 231 that covers the photovoltaic body 1. The width of the covering section 231 is w, where w and d1 satisfy the following: d1 ≤ (w + 1 mm). Thus, the covering section 231 can completely cover the edge of the first edge section 141 facing the first frame 24. Alternatively, the covering section 231 can partially cover the edge of the first edge section 141 facing the first frame 24, resulting in a 1 mm error zone between the edge of the first edge section 141 facing the first frame 24 and the covering section 231. This minimizes the presence of light-transmitting areas, thereby increasing the power generation of the photovoltaic module 100.

[0107] In addition, refer to Figure 17The width of the first edge segment 141 in the direction perpendicular to its extension is Ts, and the width of the second edge segment 142 in the direction perpendicular to its extension is T1, where Ts>T1. As a result, the first edge segment 141 has a greater width in the direction perpendicular to its extension, while the second edge segment 142 has a smaller width in the direction perpendicular to its extension. This effectively meets the requirements of the side of the reflective layer 14 adjacent to the first frame 24 and the side of the reflective layer 14 adjacent to the second frame 25, fully filling the light-transmitting area, improving the power generation of the photovoltaic module 100 while reducing the cost of the photovoltaic module 100.

[0108] Ts and T1 satisfy the following: 1 / 4 ≤ Ts / T1 ≤ 5. Thus, the ratio of the width of the first edge segment 141 to the width of the second edge segment 142 is relatively reasonable, suitable for meeting the different requirements of the light-transmitting area of ​​the photovoltaic module 100 facing the first frame 24 and the second frame 25, thereby helping to reduce the cost of the photovoltaic module 100 while meeting the needs of the photovoltaic module 100.

[0109] Among them, Ts and T1 satisfy the following conditions: 10mm≤Ts≤25mm, 7mm≤T1≤16mm. Ts satisfies the following conditions: 5mm≤Ts≤25mm, preferably 10mm≤Ts≤25mm. The width of the first edge segment 141 is relatively reasonable, which helps meet the need for reflection while preventing the first edge segment 141 from excessively extending toward the center of the rear transparent cover plate 13 and into the photovoltaic cell layer 11, thereby affecting the use of the photovoltaic cell layer 11.

[0110] 5mm≤T1≤20mm, preferably 7mm≤T1≤16mm. The width of the second edge segment 142 is relatively reasonable, meeting the use of the light-transmitting area adjacent to the second frame 25, fully reflecting light to increase the power generation of the photovoltaic module 100, while helping to reduce the use of the second edge segment 142, thereby reducing the cost of the photovoltaic module 100, and preventing the second edge segment 142 from excessively extending toward the photovoltaic cell layer 11, which would affect the use of the photovoltaic cell layer 11.

[0111] According to some embodiments of the present invention, referring to Figure 15 and Figure 16The distance between the edge of the first edge segment 141 facing the first frame 24 and the outer sidewall of the first limiting portion 22 of the first frame 24 is Qs, and the distance between the outer edge of the second edge segment 142 and the outer sidewall of the first limiting portion 22 of the second frame 25 is Q1, where Qs and Q1 satisfy the following: 1 / 11 ≤ Qs / Q1 ≤ 5 / 4. Therefore, the position between the outer edge of the first edge segment 141 and the first frame 24 and the position between the outer edge of the second edge segment 142 and the second frame 25 are suitable for use as light-transmitting areas of the photovoltaic body 1 facing the first frame 24 and the second frame 25.

[0112] Furthermore, Qs satisfies the following conditions: 1mm≤Qs≤8mm, preferably 2mm≤Qs≤6mm; and Q1 satisfies the following conditions: 4mm≤Q1≤11mm, preferably 4mm≤Q1≤10mm. The distance between the edge of the first edge segment 141 facing the first frame 24 and the outer sidewall of the first limiting portion 22 of the first frame 24 is relatively reasonable, which helps to fully reflect light from the light-transmitting area while minimizing the use of the first edge segment 141, thereby reducing costs.

[0113] The distance between the outer edge of the second edge segment 142 and the outer side wall of the first limiting portion 22 of the second frame 25 is relatively reasonable, so that the setting position of the second edge segment 142 is relatively reasonable, avoiding the incomplete setting of the second edge segment 142 in the light-transmitting area causing light transmission, and at the same time avoiding the waste of the second edge segment 142, which is beneficial to reducing the use cost of the second edge segment 142.

[0114] Furthermore, the minimum distance between the inner edge of the first edge segment 141 and the edge of the rear transparent cover plate 13 is W, and the thickness of the first edge segment 141 is D, where W and D respectively satisfy the following conditions: 1mm≤W≤25mm, 0.01mm≤D≤0.4mm. This minimum distance between the inner edge of the first edge segment 141 and the edge of the rear transparent cover plate 13 is reasonable, facilitating sufficient filling of the area between the photovoltaic cell layer 11 and the edge of the rear transparent cover plate 13, reducing the area of ​​the light-transmitting area, and preventing the first edge segment 141 from excessively extending toward the center of the rear transparent cover plate 13, which could affect the use of the photovoltaic cell layer 11.

[0115] The thickness of the first edge segment 141 is also relatively reasonable, meeting the light reflection requirement while preventing the first edge segment 141 from increasing the thickness of the photovoltaic body 1, thereby preventing the first edge segment 141 from affecting the normal use of the photovoltaic body 1. Therefore, after defining the parameters of the first edge segment 141, it helps to fully utilize the function of the first edge segment 141 while preventing the first edge segment 141 from affecting the performance of the photovoltaic body 1.

[0116] One end of the second limiting portion 23 of the first frame 24 away from the first limiting portion 22 is aligned with the projection of the outer edge of the first edge segment 141 in a horizontal plane perpendicular to the thickness direction of the photovoltaic body 1 .

[0117] The second limiting portion 23 of the first frame 24 overlaps with the projection of the first edge segment 141 in a horizontal plane perpendicular to the thickness of the photovoltaic body 1. As a result, the light-transmitting area formed between the photovoltaic cell layer 11 of the photovoltaic module 100 and the second limiting portion 23 of the first frame 24 is filled by the first edge segment 141, ensuring that all light reaching the photovoltaic module 100 is converted, thereby increasing the power generation of the photovoltaic module 100.

[0118] Therefore, in the actual production process, for white-glazed glass, the edge of the white-glaze coating is widened so that the white-glaze coating covers the light-transmitting area; for transparent glass, a high-reflective coating, a reflective film, an anti-drift white film, and a high-reflective white adhesive film are used to cover the light-transmitting area. As shown in the above scheme, the purpose of eliminating the edge light-transmitting area and increasing the effective capture rate of the incident light on the light surface 4 is achieved, which not only ensures reliability, but also controls material costs and manufacturing costs, and improves power generation efficiency. Therefore, the reflective layer 14 and the first frame 24 help to increase the power generation of the photovoltaic module 100. The power generation of the photovoltaic module 100 of the present application is increased by about 2% compared with the power generation of the conventional photovoltaic module 100.

[0119] According to some embodiments of the present invention, referring to Figure 7 The width of the supporting portion 21 of the first frame 24 is n, and the width of the second limiting portion 23 in the width direction of the supporting portion 21 is b, where n and b satisfy the following: 0.05≤b / n≤1.5715. When the ratio of the width of the supporting portion 21 to the width of the second limiting portion 23 in the width direction of the supporting portion 21 is less than 0.05, the width of the second limiting portion 23 is smaller than the width of the supporting portion 21, making it difficult to achieve stable coverage of the light-facing surface 4 of the photovoltaic body 1, making it easy for the photovoltaic cell to escape from the frame 2, thereby reducing the structural stability of the photovoltaic assembly 100. When the ratio of the width of the supporting portion 21 to the width of the second limiting portion 23 in the width direction of the supporting portion 21 is greater than 1.5715, the width of the second limiting portion 23 is larger than the width of the supporting portion 21, causing the second limiting portion 23 to block a larger area of ​​the photovoltaic body 1, thereby reducing the power generation of the photovoltaic assembly 100. At the same time, the position of the second limiting portion 23 is also prone to the formation of dust accumulation bands. Therefore, by limiting the ratio of the width of the supporting portion 21 and the width of the second limiting portion 23 in the width direction of the supporting portion 21 to 0.05≤b / n≤1.5715, it helps that the supporting portion 21 and the second limiting portion 23 can stably cover the photovoltaic body 1 while avoiding the second limiting portion 23 from excessively blocking the photovoltaic body 1, thereby ensuring the power generation of the photovoltaic assembly 100.

[0120] In addition, the structure of the first frame 24 is relatively simple, which is conducive to maintaining the power generation gain of the photovoltaic component 100 without loss, or even increasing the power generation, while reducing the production difficulty of the first frame 24, avoiding process window compression, and avoiding production capacity loss of the photovoltaic component 100.

[0121] Furthermore, n and b further satisfy the following conditions: 0.1 ≤ b / n ≤ 1.1429; preferably, 0.1 ≤ b / n ≤ 0.7. Thus, the ratio of the width of the support portion 21 to the width of the second limiting portion 23 in the width direction of the support portion 21 is more reasonable. By properly limiting the widths of the support portion 21 and the second limiting portion 23, the frame 2 provides greater stability in its surrounding and covering of the photovoltaic body 1, while maximizing the power generation of the photovoltaic assembly 100 and achieving a higher power generation gain for the photovoltaic assembly 100.

[0122] According to some embodiments of the present invention, referring to Figure 7 The thickness of the second limiting portion 23 of the first frame 24 in the height direction of the supporting portion 21 is t, and the height of the first frame 24 in the height direction of the supporting portion 21 is H1, wherein t and H1 satisfy: 0.0075≤t / H1≤0.1334. When the ratio of the thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the height of the first frame 24 in the height direction of the supporting portion 21 is less than 0.0075, the thickness of the second limiting portion 23 is smaller than the height of the first frame 24, so that the second limiting portion 23 is easy to soften or deform and crack, making it difficult to stably cover the light-facing surface 4 of the photovoltaic body 1, thereby reducing the service life of the photovoltaic component 100, and the manufacturing process is more difficult; when the ratio of the thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the height of the first frame 24 in the height direction of the supporting portion 21 is greater than 0.1334, the thickness of the second limiting portion 23 is larger than the height of the first frame 24, so that the end of the second limiting portion 23 away from the first limiting portion 22 is easy to jointly define a larger area with the photovoltaic body 1, thereby easily increasing the formation area of ​​the dust accumulation belt, thereby reducing the power generation of the photovoltaic component 100. Therefore, by setting the ratio of the thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the height of the first frame 24 in the height direction of the supporting portion 21 to 0.0075≤t / H1≤0.1334, the thickness of the second limiting portion 23 is more reasonable relative to the height of the first frame 24, which helps to reduce the processing difficulty of the first frame 24, and is beneficial to improving the coverage stability of the first frame 24 on the light-facing surface 4 of the photovoltaic body 1, while minimizing the formation of dust accumulation bands.

[0123] Furthermore, t and H1 further satisfy the following conditions: 0.01≤t / H1≤0.1; preferably, 0.0135≤t / H1≤0.05. The above-mentioned restriction on the ratio of the thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the height of the first frame 24 in the height direction of the supporting portion 21 is relatively reasonable, further reducing the difficulty of manufacturing the first frame 24, improving the coverage stability of the first frame 24 on the light-facing surface 4 of the photovoltaic body 1, and further reducing the formation of dust accumulation bands.

[0124] According to other embodiments of the present invention, Figure 6 and Figure 7 The minimum thickness of the second limiting portion 23 of the first frame 24 in the height direction of the supporting portion 21 is t1, and the thickness of the photovoltaic body 1 of the photovoltaic assembly 100 in the height direction of the supporting portion 21 is g1, wherein t1 and g1 satisfy: 0.03<t1 / g1<0.3. When the ratio of the minimum thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the thickness of the photovoltaic body 1 of the photovoltaic module 100 in the height direction of the supporting portion 21 is less than or equal to 0.03, the minimum thickness of the second limiting portion 23 is smaller than the thickness of the photovoltaic body 1, and the second limiting portion 23 is difficult to stably and reliably cover the light-facing surface 4 of the photovoltaic body 1, thereby reducing the reliability of the frame 2; when the ratio of the minimum thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the thickness of the photovoltaic body 1 of the photovoltaic module 100 in the height direction of the supporting portion 21 is greater than or equal to 0.3, the minimum thickness of the second limiting portion 23 is larger than the thickness of the photovoltaic body 1, thereby increasing the thickness of the second limiting portion 23, making it easy for the second limiting portion 23 and the light-facing surface 4 of the photovoltaic body 1 to form a larger area, thereby easily forming a larger dust accumulation belt between the second limiting portion 23 and the light-facing surface 4 of the photovoltaic body 1. Therefore, by setting the ratio of the minimum thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the thickness of the photovoltaic body 1 of the photovoltaic module 100 in the height direction of the supporting portion 21 to 0.03<t1 / g1<0.3, the thickness of the second limiting portion 23 is relatively reasonable relative to the thickness of the photovoltaic body 1, which helps to improve the coverage stability and reliability of the second limiting portion 23 on the light-facing surface 4 of the photovoltaic body 1, and at the same time is beneficial to the drainage and hydrophobicity of the photovoltaic module 100 to reduce the formation of dust accumulation belts.

[0125] According to some embodiments of the present invention, referring to Figure 6 and Figure 7, the thickness of the second limiting portion 23 of the first frame 24 in the height direction of the bearing portion 21 is t, wherein t and b satisfy: 1 / 22≤t / b≤3 / 7. When the ratio of the thickness of the second limiting portion 23 in the height direction of the bearing portion 21 to the width of the second limiting portion 23 in the width direction of the bearing portion 21 is less than 1 / 22, the ratio of the thickness of the second limiting portion 23 to the width of the second limiting portion 23 is small, the second limiting portion 23 is thinner and longer, and it is difficult to disperse the force of the second limiting portion 23 within a wider size range, so that the second limiting portion 23 is prone to deformation or breakage. At the same time, the production of the frame 2 is difficult to achieve (it is difficult to maintain a good yield when the raw material of the frame 2 is extruded), the transportation of the frame 2 and the installation of the photovoltaic module 100 are difficult. There is a risk of deformation during the framing process; when the ratio of the thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the width of the second limiting portion 23 in the width direction of the supporting portion 21 is greater than 3 / 7, the thickness of the second limiting portion 23 is too large, and water accumulation is difficult to drain when the photovoltaic module 100 is installed at a small angle, and the dust accumulation zone becomes wider, resulting in loss of power generation, which is prone to the risk of hot spots. At the same time, the cross-section of the second limiting portion 23 is relatively narrow, and the second limiting portion 23 is likely to fail to cover the edge of the photovoltaic body 1 to be covered, and appearance abnormalities such as gaps, front glue overflow, and EVA burrs of the photovoltaic module 100 will be highlighted. Therefore, by setting the ratio of the thickness of the second limiting portion 23 in the height direction of the supporting portion 21 to the width of the second limiting portion 23 in the width direction of the supporting portion 21 to 1 / 22≤t / b≤3 / 7, a better anti-dust accumulation effect can be achieved, minimizing the loss of power generation gain caused by dust accumulation while reducing the difficulty of the process.

[0126] According to some embodiments of the present invention, referring to Figure 4The second limiting portion 23 of the first frame 24 includes a first limiting section 233, a second limiting section 234 and a third limiting section 235. One end of the first limiting section 233 is connected to the other end of the first limiting section 22. One end of the second limiting section 234 is connected to the other end of the first limiting section 233, and the thickness of the second limiting section 234 gradually decreases in the direction away from the first limiting section 233. One end of the third limiting section 235 is connected to the other end of the second limiting section 234, and the thickness of the third limiting section 235 gradually decreases in the direction away from the first limiting section 233. Along the direction away from the first limiting section 22, the first limiting section 233, the second limiting section 234 and the third limiting section 235 are connected in sequence, wherein the thickness of the second limiting section 234 gradually decreases, and the thickness of the third limiting section 235 also gradually decreases. This helps reduce the forces acting on the first limiting portion 22 and ensures the structural stability of the first limiting portion 22. The thickness of the second limiting segment 234 is greater than the thickness of the third limiting segment 235, ensuring the stability and reliability of the connection between the second limiting segment 234 and the first limiting segment 233 and the third limiting segment 235. The gradually decreasing thickness of the third limiting segment 235 helps reduce the weight of the third limiting segment 235, reduces the forces acting on the first limiting segment 233 and the first limiting portion 22, and improves the operational stability of the first limiting segment 233 and the first limiting portion 22. Furthermore, the arrangement of the third limiting segment 235 allows the end of the third limiting segment 235 away from the first limiting segment 233 to be suitable for disrupting the surface tension of water, thereby rupturing the water film and improving the drainage and hydrophobic properties of the photovoltaic module 100.

[0127] Further, refer to Figure 4 The thickness of the first limiting section 233 remains constant in the direction away from the first limiting portion 22. The first limiting section 233 is disposed adjacent to the first limiting portion 22, so that the thickness of the first limiting portion 22 remains constant. This facilitates the first limiting section 233 to stably transmit the force exerted on the second limiting section 234 and the third limiting section 235 to the first limiting portion 22, thereby achieving stress dispersion.

[0128] The side of the second limiting section 234 away from the supporting portion 21 extends horizontally, and the side of the second limiting section 234 adjacent to the supporting portion 21 extends obliquely in a direction away from the first limiting section 233 and away from the supporting portion 21. As a result, the side of the second limiting section 234 away from the supporting portion 21 is aligned with the first limiting section 233, thereby increasing the structural flatness of the surface of the frame 2 away from the photovoltaic body 1 and facilitating press-fitting of the pressing block and the like with the first frame 24. The second limiting section 234 is tilted on the side adjacent to the supporting portion 21, resulting in a smooth surface, which facilitates stress dispersion and increases the space between this side of the second limiting section 234 and the surface of the photovoltaic body 1, making the aforementioned space suitable for filling with a larger amount of colloid 5 to improve the installation reliability of the photovoltaic body 1.

[0129] The side of the third limiting section 235 away from the support portion 21 extends obliquely in a direction away from the first limiting section 233 and toward the support portion 21. The side of the third limiting section 235 adjacent to the support portion 21 extends horizontally. The inclined configuration of the surface of the third limiting section 235 away from the support portion 21 facilitates directing water flow on the photovoltaic body 1 through this surface, thereby facilitating water drainage and drainage of the photovoltaic module 100. The surface of the third limiting section 235 adjacent to the support portion 21 is parallel to the end of the second limiting section 234, effectively preventing the colloid 5 from overflowing and preventing the ingress of water and / or dust.

[0130] According to the second embodiment of the present invention, referring to Figure 6-Figure 9 The first frame 24 further includes a first stopper tooth 28, one end of which is connected to an end of the second limiting portion 23 adjacent to the first limiting portion 22, and the other end of which extends toward the bearing portion 21. Thus, the provision of the first stopper tooth 28 facilitates blocking the colloid 5 when the frame 2 is mounted on the circumference of the photovoltaic body 1, allowing the colloid 5 to fully remain and fill the space defined between the frame 2 and the edge of the photovoltaic body 1, effectively preventing and alleviating the colloid 5 from squeezing out of the gap between the photovoltaic body 1 and the frame 2. Furthermore, the first stopper tooth 28 helps to position the photovoltaic body 1 when the frame 2 is mounted on the circumference of the photovoltaic body 1, preventing the photovoltaic body 1 from being too close to the first limiting portion 22, compressing the space for storing the colloid 5 and causing the colloid 5 to be squeezed out, such as causing the photovoltaic module 100 to overflow toward the light surface 4. It also prevents the photovoltaic body 1 from being too far away from the frame 2 on the other side opposite to the frame 2, resulting in an excessive gap between the frame 2 and the edge of the photovoltaic body 1. Therefore, the provision of the first adhesive stop teeth 28 helps to make the distance between the two opposite sides of the photovoltaic body 1 and the frame 2 more uniform, so that the adhesive 5 can be effectively bonded and reduce adverse phenomena such as adhesive overflow on the light-facing surface 4 of the photovoltaic module 100.

[0131] Further, refer to Figure 6 and Figure 7 The minimum distance between the other end of the first stopper tooth 28 and the bearing portion 21 is f1, and the thickness of the photovoltaic body 1 of the photovoltaic module 100 in the height direction of the bearing portion 21 is g1, where f1 and g1 satisfy: 0<f1<g1. Therefore, the minimum distance between the first stopper tooth 28 and the bearing portion 21 is less than the thickness of the photovoltaic module 100, which helps to fully utilize the limiting function of the first stopper tooth 28, prevent the photovoltaic module 100 from entering the space jointly defined by the first stopper tooth 28, the first limiting portion 22, and the bearing portion 21, and prevent the photovoltaic module 100 from entering and overflowing the space, thereby avoiding the risk of the photovoltaic body 1 being excessively squeezed against the first limiting portion 22 and exploding.

[0132] Reference Figure 8, the angle between the side surface of the first stop rubber tooth 28 adjacent to the second limiting portion 23 and the second limiting portion 23 is A1, wherein A1 satisfies: 60°≤A1≤120°. Among them, A1=90° is the best. When the angle between the side surface of the first stop rubber tooth 28 adjacent to the second limiting portion 23 and the second limiting portion 23 is less than 60°, the above-mentioned other end of the first stop rubber tooth 28 is prone to sharp contact with the side of the photovoltaic body 1, thereby posing a risk of bursting the photovoltaic body 1; when the angle between the side surface of the first stop rubber tooth 28 adjacent to the second limiting portion 23 and the second limiting portion 23 is greater than 120°, it is easy to cause the photovoltaic body 1 to be overly squeezed toward the first limiting portion 22, causing the photovoltaic body 1 on this side to be at risk of being squeezed and burst, or the gap between the photovoltaic body 1 on the opposite side and the frame 2 is too large. Therefore, by setting the angle between the side surface of the first stop rubber tooth 28 adjacent to the second limiting portion 23 and the second limiting portion 23 to 60°≤A1≤120°, it is helpful to utilize the first stop rubber tooth 28 to make the photovoltaic body 1 relatively centered, and the opposite sides of the photovoltaic body 1 can achieve the stopping stability and connection reliability of the photovoltaic body 1, thereby improving the structural stability of the photovoltaic component 100 and extending the service life of the photovoltaic component 100.

[0133] The included angle between the side surface of the first stopper tooth 28 adjacent to the first limiting portion 22 and the first limiting portion 22 is B1, wherein B1 satisfies: 10°≤B1≤90°, and B1=30° is optimal. When the angle between the side surface of the first glue stop tooth 28 adjacent to the first limiting portion 22 and the first limiting portion 22 is less than 10°, the space defined by the first glue stop tooth 28, the first limiting portion 22, the bearing portion 21 and the side surface of the photovoltaic body 1 is small, the amount of colloid 5 stored is small, and the risk of glue overflowing from the light-facing surface 4 of the photovoltaic body 1 is easily increased; when the angle between the side surface of the first glue stop tooth 28 adjacent to the first limiting portion 22 and the first limiting portion 22 is greater than 90°, the above-mentioned other end of the first glue stop tooth 28 approaches the second limiting portion 23, thereby causing the photovoltaic body 1 to approach the first limiting portion 22, thereby reducing the size of the space defined by the first glue stop tooth 28, the first limiting portion 22, the bearing portion 21 and the side surface of the photovoltaic body 1, and thus the amount of colloid 5 stored in the above-mentioned space is small, and there is a risk that the colloid 5 will be squeezed toward the light-facing surface 4 of the photovoltaic body 1 along the inclination angle of the first glue stop tooth 28, causing glue overflow from the light-facing surface 4 of the photovoltaic body 1.

[0134] According to the third embodiment of the present invention, referring to Figure 9The first frame 24 further includes a third limiting portion 29, one end of which is connected to the first limiting portion 22, and the other end of the third limiting portion 29 extends in a direction away from the first limiting portion 22. The third limiting portion 29, the second limiting portion 23, and the bearing portion 21 are located on the same side of the thickness direction of the first limiting portion 22. Thus, the provision of the third limiting portion 29 helps to further limit the position of the frame 2 on the colloid 5 in the space defined by the first glue stop teeth 28, the first limiting portion 22, the bearing portion 21, and the side of the photovoltaic body 1, thereby further avoiding the risk of glue overflowing from the light-facing surface 4 of the photovoltaic module 100. In addition, the other end of the third limiting portion 29 away from the first limiting portion 22 can be extended to at least a portion of the end portion to abut against the side of the photovoltaic body 1, thereby increasing the effect of the frame 2 on the side of the photovoltaic body 1, so that the opposite sides of the photovoltaic body 1 are evenly arranged.

[0135] Furthermore, the other end of the third limiting portion 29 may extend obliquely away from the supporting portion 21; or the other end of the third limiting portion 29 may extend obliquely toward the supporting portion 21; or the other end of the third limiting portion 29 may extend horizontally. In other words, the extension direction of the third limiting portion 29 may be selected in various ways, all of which can achieve the function of the third limiting portion 29 to enhance the limiting effect of the frame 2 on the colloid 5 and / or the photovoltaic body 1.

[0136] In addition, the distance between the other end of the third limiting portion 29 and the side surface of the first limiting portion 22 adjacent to the third limiting portion 29 is k3, and the distance between the side of the other end of the first stop rubber tooth 28 away from the first limiting portion 22 and the side surface of the first limiting portion 22 adjacent to the third limiting portion 29 is b3, where k3 and b3 satisfy: 0<k3≤b3. When k3<b3, along the direction away from the first limiting portion 22, the distance between the third limiting portion 29 and the side surface of the first limiting portion 22 adjacent to the third limiting portion 29 is smaller than the distance between the side of the other end of the first blocking rubber tooth 28 away from the first limiting portion 22 and the side surface of the first limiting portion 22 adjacent to the third limiting portion 29. As a result, a gap is formed between the above-mentioned other end of the third limiting portion 29 and the side surface of the photovoltaic body 1, which is beneficial to the flow of the colloid 5 between the side of the third limiting portion 29 adjacent to the bearing portion 21 and the side of the third limiting portion 29 adjacent to the first blocking rubber tooth 28, and is beneficial to the uniform distribution of the colloid 5, thereby increasing the connection stability and reliability between the photovoltaic body 1 and the frame 2. When k3=b3, along the direction away from the first limiting portion 22, the distance between the third limiting portion 29 and the side surface of the first limiting portion 22 adjacent to the third limiting portion 29 is equal to the distance between the side of the other end of the first stop rubber tooth 28 away from the first limiting portion 22 and the side surface of the first limiting portion 22 adjacent to the third limiting portion 29. The above-mentioned other end of the third stop rubber tooth and the above-mentioned other end of the third limiting portion 29 can both cooperate with the side surface of the photovoltaic body 1, thereby increasing the stopping stability of the frame 2 against the side surface of the photovoltaic body 1, which is conducive to the uniform setting of the relative sides of the photovoltaic body 1.

[0137] According to the first, fourth to seventh embodiments of the present invention, referring to Figure 3 、 Figure 4 , Figure 10-13 The first frame 24 further includes a second stopper 280. One end of the second stopper 280 is connected to the first limiting portion 22, and the other end of the second stopper 280 extends away from the first limiting portion 22. The second stopper 280, the second limiting portion 23, and the bearing portion 21 are located on the same side of the first limiting portion 22 in the thickness direction. One end of the second stopper 280 is connected to the first limiting portion 22, which transfers the force applied to the second stopper 280 to the first limiting portion 22 for distribution. This helps to improve the structural stability and reliability of the second stopper 280.

[0138] Furthermore, one end of the second stopper tooth 280 is connected to one end of the first stopper portion 22 adjacent to the second stopper portion 23. This increases the space defined by the second stopper tooth 280, the first stopper portion 22, the support portion 21, and the side of the photovoltaic body 1, thereby increasing the volume of the colloid 5 and improving the stability of the connection between the frame 2 and the photovoltaic body 1.

[0139] In addition, refer to Figure 4 , the distance between the end face of the other end of the second stopper tooth 280 and the side surface of the first limiting portion 22 adjacent to the second stopper tooth 280 is d, where d satisfies: 0mm<d≤3mm. When the distance between the end face of the other end of the second stopper tooth 280 and the side surface of the first limiting portion 22 adjacent to the second stopper tooth 280 is greater than 3mm, the extension length of the second stopper tooth 280 is large and is prone to breakage during use, thereby reducing the service life of the first frame 24. Therefore, by setting the distance between the end face of the other end of the second stopper tooth 280 and the side surface of the first limiting portion 22 adjacent to the second stopper tooth 280 to 0mm<d≤3mm, the extension length of the second stopper tooth 280 is more reasonable, which is conducive to the end face of the other end of the second stopper tooth 280 being able to reliably stop against the side of the photovoltaic body 1, thereby extending the service life of the first frame 24.

[0140] The thickness of the second stopper teeth 280 is i, where i satisfies the following conditions: 0.3mm≤i≤5mm. When the thickness of the second stopper teeth 280 is less than 0.3mm, the structural strength of the second stopper teeth 280 is low, making it prone to breakage during use. Furthermore, the second stopper teeth 280 are prone to deformation, reducing the reliability of the second stopper teeth 280 in restraining the side of the photovoltaic body 1. When the thickness of the second stopper teeth 280 is greater than 5mm, the space occupied by the second stopper teeth 280 is large, reducing the space for placing the colloid 5 and potentially reducing the reliability of the connection between the frame 2 and the photovoltaic body 1. Therefore, by setting the thickness of the second stopper teeth 280 to 0.3mm≤i≤5mm, while ensuring the structural strength of the second stopper teeth 280, the second stopper teeth 280 are stably abutted against the side of the photovoltaic body 1, while maximizing the storage space for the colloid 5, improving the reliability of the connection between the frame 2 and the photovoltaic body 1, and extending the service life of the photovoltaic module 100.

[0141] The thickness of the other end of the second stopper 280 in the height direction of the support portion 21 is j, where j satisfies the following: 0.3mm≤j≤5mm. When the thickness of the other end of the second stopper 280 in the height direction of the support portion 21 is less than 0.3mm, the effective contact area between the second stopper 280 and the side surface of the photovoltaic body 1 is reduced, increasing the force per unit area of ​​the second stopper 280 and thereby increasing the deformation potential of the second stopper 280. When the thickness of the other end of the second stopper 280 in the height direction of the support portion 21 is greater than 5mm, the second stopper 280 occupies a larger space, reducing the space for placing the colloid 5, and thus potentially reducing the reliability of the connection between the frame 2 and the photovoltaic body 1. Therefore, by setting the thickness of the other end of the second stop rubber tooth 280 in the height direction of the bearing part 21 to 0.3mm≤j≤5mm, it helps to increase the contact area between the second stop rubber tooth 280 and the side of the photovoltaic body 1, ensure the limiting effect on the photovoltaic body 1, ensure the structural strength and service life of the second stop rubber tooth 280, and at the same time ensure the placement space of the colloid 5 as much as possible, so as to improve the connection reliability between the frame 2 and the photovoltaic body 1 and extend the service life of the photovoltaic module 100.

[0142] According to the fourth and seventh embodiments of the present invention, the end surface of the other end of the second stopper tooth 280 is adapted to be parallel to the side surface of the photovoltaic body 1 of the photovoltaic module 100. As a result, the entire area of ​​the end surface of the other end of the second stopper tooth 280 can be stopped against the side surface of the photovoltaic body 1, thereby fully utilizing the second stopper tooth 280 to limit the position of the photovoltaic body 1.

[0143] According to the first, fourth to seventh embodiments of the present invention, referring to Figure 3 、 Figure 4 , Figure 10-13 The thickness of the other end of the second stopper tooth 280 in the height direction of the bearing portion 21 is greater than the thickness of the remaining portion of the second stopper tooth 280. Therefore, the thickness of the end of the second stopper tooth 280 is reasonably increased to ensure the contact area between the other end and the side surface of the photovoltaic module 100, thereby enhancing the limiting effect of the second stopper tooth 280 on the photovoltaic body 1. At the same time, the thickness of the remaining portion of the second stopper tooth 280 is relatively small, which helps to increase the storage space for the colloid 5.

[0144] Furthermore, the side of the other end of the second stopper tooth 280, which is away from the supporting portion 21, protrudes in a direction away from the supporting portion 21; and / or the side of the other end of the second stopper tooth 280, which is adjacent to the supporting portion 21, protrudes toward the supporting portion 21. This helps increase the contact area between the other end of the second stopper tooth 280 and the side surface of the photovoltaic body 1, thereby improving the limiting effect of the second stopper tooth 280 on the side surface of the photovoltaic body 1.

[0145] Among them, reference Figure 4 The angle between the side surface of the second rubber stopper tooth 280 adjacent to the first limiting portion 22 and the first limiting portion 22 is B2, where B2 satisfies: 0°<B2<180°; preferably 0°<B2<90°; and more preferably 30°≤B2≤60°. In other words, the second rubber stopper tooth 280 can be tilted toward the first limiting portion 22, or the second rubber stopper tooth 280 can be tilted toward the second limiting portion 23, or the second rubber stopper tooth 280 can extend in a direction parallel to the second limiting portion 23 (i.e. 0°<B2<180°). It is preferably set to be tilted toward the first limiting portion 22 (i.e. 0°<B2<90°) to have a better rubber stop effect and prevent the colloid 5 from overflowing. Furthermore, when set to 30°≤B2≤60°, the rubber stop effect of the second rubber stopper tooth 280 is the best. Therefore, the angle between the side surface of the second stop rubber tooth 280 adjacent to the first limiting portion 22 and the first limiting portion 22 is relatively reasonable, which is conducive to filling the colloid 5 in the space jointly defined by the second stop rubber tooth 280, the first limiting portion 22, the supporting portion 21 and the photovoltaic body 1.

[0146] According to some embodiments of the present invention, referring to Figure 5 and Figure 6 One end of the second stopper tooth 280 is connected between one end of the second stopper portion 23 and the other end of the first stopper portion 22, while the other end of the second stopper tooth 280 extends obliquely toward the support portion 21. This one end of the second stopper tooth 280 is positioned between the angle between the first stopper portion 22 and the second stopper portion 23, while the other end of the second stopper tooth 280 is positioned away from the first stopper portion 22 and the second stopper portion 23. As a result, the forces acting on the second stopper tooth 280 are dispersed by the first stopper portion 22 and the second stopper portion 23. Furthermore, the second stopper tooth 280 also enhances the connection stability between the first stopper portion 22 and the second stopper portion 23.

[0147] In addition, the shape of the end surface of the other end of the first gear tooth 28 and / or the end surface of the other end of the second gear tooth 280 can be trapezoidal, rhombus, rectangular, conical, triangular, circular, elliptical, or a combination of the above shapes, which are not specifically limited here.

[0148] The present invention proposes a photovoltaic module 100 with a height difference between two adjacent frames 2. By controlling the overall height of the first frame 24 and the second frame 25 and the ratio of the top thickness of the first frame 24 and the second frame 25, and supplemented by the setting of the relative overlapping width of the first frame 24 to the photovoltaic body 1, the conventional pressing block installation method of the photovoltaic module 100 is maintained unchanged while drainage is achieved without accumulation of dirt. At the same time, the above-mentioned frame 2 can provide sufficient protection and load resistance strength for the photovoltaic module 100.

[0149] The present invention also achieves the purpose of eliminating the edge light-transmitting area and improving the effective capture rate of incident light on the light surface 4 by redesigning the photovoltaic body 1 and introducing new technologies for optimization and improvement. It not only ensures reliability, but also controls material cost and manufacturing cost, and improves power generation efficiency.

[0150] The innovative design of the hydrophobic frame 2 (i.e., the first frame 24) and the double-glass double-sided photovoltaic body 1 prevents dust and water accumulation, allowing the photovoltaic module 100 to fully utilize sunlight to generate electricity, thereby increasing the power generation capacity of the photovoltaic module 100.

[0151] By further optimizing the first frame 24, the present invention proposes a frame 2 solution with a hidden second stopper 23. By controlling the thickness-to-width ratio of the second stopper 23, limiting the length relationship between the first stopper teeth 28 or the second stopper teeth 280 and the photovoltaic body 1, and limiting the effective angle range of the first stopper teeth 28 or the second stopper teeth 280, the present invention solves the difficulties of the difficult production process and narrow process window of the frame 2 assembly without the second stopper 23 while maintaining power generation gain. This reduces process cost increases and lays a foundation for improving the production capacity and quality of the photovoltaic module 100.

[0152] The embodiments of the present invention are described in detail below. It should be noted that the embodiments described below are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0153] Performance Tests of Examples and Comparative Examples

[0154] The degree of dust accumulation was simulated under conditions where the photovoltaic module 100 was installed at a 3° inclination angle (the slope of industrial and commercial roofs is typically 5%, which translates to a 3° inclination angle). The impact of dust accumulation was assessed by measuring the degree of water accumulation (the highest point of water accumulation) at different parameters on the first frame 24 closest to the ground. The parameters and test data for the examples and comparative examples are shown in Table 1.

[0155] Table 1 Structural parameters and performance test data of photovoltaic modules 100 of the embodiment and comparative example

[0156]

[0157] Result Analysis

[0158] By comparing Examples 1-4 with Comparative Example 1-2, it can be found that when 1 / 10≤h1 / h2≤2 / 3, the width of the obstruction caused by accumulated water and dust is significantly reduced, that is, the photovoltaic module 100 has better hydrophobic and drainage effects, which helps to reduce the hot spot risk of the photovoltaic module 100 and is beneficial to improving the power generation of the photovoltaic module 100.

[0159] When 4 / 5≤H1 / H2<19 / 20, the drainage and hydrophobic effects of the photovoltaic component 100 are better; when 0.3mm<w≤5mm, the production difficulty of the first frame 24 is relatively low, and at the same time, the drainage and hydrophobic effects of the photovoltaic component 100 can be improved; when 0.5≤t1 / t2<1, the thickness of the covering section 231 is relatively small, which is beneficial to improving the effect of the end of the covering section 231 away from the first limiting portion 22 on puncturing the water film, thereby helping to improve the drainage and hydrophobic efficiency of the photovoltaic component 100.

[0160] In addition, experiments have found that due to the thickness limitations of the junction box and connector, it is difficult to achieve a process in which H2 of the second frame 25 is less than 20 mm; when H1 of the first frame 24 is less than 10 mm, it is difficult to connect the first frame 24 and the second frame 25 through the angle code and provide reliable support for the photovoltaic body 1.

[0161] When H1 / H2 is so large that the heights of the first frame 24 and the second frame 25 are nearly equal, that is, h1 is close to h2, the anti-dust accumulation advantage of the photovoltaic module 100 disappears.

[0162] Other structures and operations of the photovoltaic assembly 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0163] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0164] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0165] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0166] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A photovoltaic module (100), characterized in that: include: Photovoltaic body (1); A plurality of frames (2), wherein the plurality of frames (2) are arranged around the outer peripheral side of the photovoltaic body (1), the frame (2) comprises a bearing portion (21), a first limiting portion (22) and a second limiting portion (23) connected in sequence, the bearing portion (21) is opposite to the backlight surface (3) of the photovoltaic body (1), the first limiting portion (22) is opposite to the side surface of the photovoltaic body (1), and the second limiting portion (23) is opposite to the light-facing surface (4) of the photovoltaic body (1), and the plurality of frames (2) comprises a first frame (24) and a second frame (25) arranged adjacent to each other, wherein the maximum distance between the surface of the second limiting portion (23) of the first frame (24) away from the light-facing surface (4) and the light-facing surface (4) is h1, and the maximum distance between the surface of the second limiting portion (23) of the second frame (25) away from the light-facing surface (4) and the light-facing surface (4) is h2, wherein h1 and h2 satisfy: 1 / 10≤h1 / h2≤2 / 3.

2. The photovoltaic assembly (100) according to claim 1, characterized in that The h1 and h2 further satisfy: 1 / 8≤h1 / h2≤1 / 2.

3. The photovoltaic assembly (100) according to claim 1, characterized in that The h1 and h2 respectively satisfy: 0.5mm≤h1≤3mm, 1.5mm≤h2≤5mm.

4. The photovoltaic assembly (100) according to claim 3, characterized in that The h1 and h2 respectively satisfy: 0.5mm≤h1≤1.5mm, 1.5mm≤h2≤4mm.

5. The photovoltaic assembly (100) according to claim 1, characterized in that The second limiting portion (23) of the first frame (24) has a covering section (231) covering the photovoltaic body (1), and the width of the covering section (231) is smaller than the width of the edge of the second limiting portion (23) of the second frame (25) covering the light-facing surface (4).

6. The photovoltaic assembly (100) according to claim 1, characterized in that The second limiting portion (23) of the first frame (24) has a covering section (231) covering the photovoltaic body (1), the width of the covering section (231) is w, and the width of the edge of the light-facing surface (4) covered by the second limiting portion (23) of the second frame (25) is A, wherein w and A satisfy: 0.03≤w / A≤2.6667.

7. The photovoltaic assembly (100) according to claim 6, characterized in that The w and A satisfy: 0.03≤w / A≤0.

8.

8. The photovoltaic assembly (100) according to claim 1, characterized in that The second limiting portion (23) of the first frame (24) has a covering section (231) covering the photovoltaic body (1), and the width of the covering section (231) is w, wherein w satisfies: 0.3mm<w≤3mm.

9. The photovoltaic assembly (100) according to claim 1, characterized in that The second limiting portion (23) of the first frame (24) has a covering section (231) covering the photovoltaic body (1), and the thickness of the covering section (231) is smaller than the thickness of the remaining portion of the second limiting portion (23) of the first frame (24) except the covering section (231).

10. The photovoltaic assembly (100) according to claim 9, characterized in that Along a direction away from the first limiting portion (22), at least one side surface of the covering section (231) in a thickness direction extends obliquely toward another side surface.

11. The photovoltaic assembly (100) according to claim 9, characterized in that The minimum thickness of the covering section (231) is t1, and the maximum thickness of the remaining portion of the second limiting portion (23) of the first frame (24) excluding the covering section (231) is t2, wherein t1 and t2 satisfy: 0.2≤t1 / t2<1.

12. The photovoltaic assembly (100) according to claim 9, characterized in that The thickness of the covering section (231) is t, wherein t satisfies: 0.2 mm ≤ t ≤ 2 mm.

13. The photovoltaic assembly (100) according to claim 1, characterized in that An end surface of the first frame (24) adjacent to one end of the second frame (25) extends obliquely in a direction away from the second frame (25); or The end of the first frame (24) has a notch (6), and the first frame (24) and the end of the second frame (25) are spaced apart from each other by the notch (6). The width of the notch (6) is G, wherein G satisfies: 1mm≤G≤100mm.

14. The photovoltaic assembly (100) according to claim 1, characterized in that An end edge of the second frame (25) adjacent to the first frame (24) has a chamfer (251).

15. The photovoltaic assembly (100) according to claim 1, characterized in that The height of the first frame (24) in the thickness direction of the photovoltaic body (1) is H1, and the height of the second frame (25) in the thickness direction of the photovoltaic body (1) is H2, wherein: The H1 and H2 satisfy: 1 / 2≤H1 / H2<1; and / or, the H1 and H2 respectively satisfy: 10mm≤H1<40mm, 20mm≤H2≤40mm.

16. The photovoltaic assembly (100) according to claim 15, characterized in that The H1 and H2 satisfy: 4 / 5≤H1 / H2<19 / 20; and / or, the H1 and H2 respectively satisfy: 20mm≤H1≤38mm, 25mm≤H2≤40mm.

17. The photovoltaic assembly (100) according to claim 1, characterized in that A surface of the second limiting portion (23) of the second frame (25) on a side away from the light-facing surface (4) has a friction pattern (232).

18. The photovoltaic assembly (100) according to any one of claims 1 to 17, characterized in that The length of the first frame (24) is smaller than the length of the second frame (25).

19. The photovoltaic assembly (100) according to claim 1, characterized in that The photovoltaic body (1) comprises: Photovoltaic cell layer (11); A front transparent cover plate (12), the front transparent cover plate (12) being arranged on the light-facing surface (4) of the photovoltaic cell layer (11); a back transparent cover plate (13), the back transparent cover plate (13) being arranged on the backlight surface (3) of the photovoltaic cell layer (11), the back transparent cover plate (13) having a first side surface (131) completely embedded in the first frame (24) and a second side surface (132) completely embedded in the second frame (25); A reflective layer (14) is located on a surface of the back transparent cover plate (13) facing the front transparent cover plate (12), and the reflective layer (14) includes a first edge segment (141) and a second edge segment (142), wherein the first edge segment (141) is arranged adjacent to the first frame (24) and extends in the same direction as the extension direction of the first frame (24); the second edge segment (142) is arranged adjacent to the second frame (25) and extends in the same direction as the extension direction of the second edge; wherein the distance between the edge of the first edge segment (141) facing the first frame (24) and the first side surface (131) is d1, and the distance between the edge of the second edge segment (142) facing the second frame (25) and the second side surface (132) is d2, and d1 is smaller than d2.

20. The photovoltaic assembly (100) according to claim 19, characterized in that The d1 and d2 satisfy: 0mm≤d1≤2mm, 3mm≤d2≤10mm.

21. The photovoltaic assembly (100) according to claim 19, characterized in that The second limiting portion (23) of the first frame (24) has a covering section (231) covering the photovoltaic body (1), the covering section (231) has a width w, and w and d1 satisfy: d1≤(w+1mm).

22. The photovoltaic assembly (100) according to claim 20, characterized in that The width of the first edge segment (141) in a direction perpendicular to the extension direction of the first edge segment (141) is Ts, and the width of the second edge segment (142) in a direction perpendicular to the extension direction of the second edge segment (142) is T1, wherein Ts>T1.

23. The photovoltaic assembly (100) according to claim 22, characterized in that in, The Ts and T1 satisfy: 10mm≤Ts≤25mm, 7mm≤T1≤16mm.

24. The photovoltaic assembly (100) according to claim 20, characterized in that The distance between the edge of the first edge segment (141) facing the first frame (24) and the outer side wall of the first limiting portion (22) of the first frame (24) is Qs, and the distance between the outer edge of the second edge segment (142) and the outer side wall of the first limiting portion (22) of the second frame (25) is Q1, wherein Qs satisfies: 1mm≤Qs≤8mm; and Q1 satisfies: 4mm≤Q1≤11mm.

25. The photovoltaic assembly (100) according to claim 24, characterized in that The Qs satisfies: 2mm≤Qs≤6mm; the Q1 satisfies: 4mm≤Q1≤10mm.

26. The photovoltaic assembly (100) according to claim 1, characterized in that The width of the bearing portion (21) of the first frame (24) is n, and the width of the second limiting portion (23) in the width direction of the bearing portion (21) is b, wherein n and b satisfy: 0.05≤b / n≤1.5715.

27. The photovoltaic assembly (100) according to claim 1, characterized in that The thickness of the second limiting portion (23) of the first frame (24) in the height direction of the bearing portion (21) is t, and the height of the first frame (24) in the height direction of the bearing portion (21) is H1, wherein t and H1 satisfy: 0.0075≤t / H1≤0.1334.

28. The photovoltaic assembly (100) according to claim 1, characterized in that The minimum thickness of the second limiting portion (23) of the first frame (24) in the height direction of the supporting portion (21) is t1, and the thickness of the photovoltaic body (1) of the photovoltaic assembly (100) in the height direction of the supporting portion (21) is g1, wherein t1 and g1 satisfy: 0.03<t1 / g1<0.

3.

29. The photovoltaic assembly (100) according to any one of claims 26-28, characterized in that The first frame (24) further comprises: A first rubber stop tooth (28), one end of the first rubber stop tooth (28) is connected to an end of the second limiting portion (23) adjacent to the first limiting portion (22), and the other end of the first rubber stop tooth (28) extends toward the bearing portion (21).

30. The photovoltaic assembly (100) according to claim 29, characterized in that The first frame (24) further comprises: a third limiting portion (29), one end of the third limiting portion (29) being connected to the first limiting portion (22), the other end of the third limiting portion (29) extending in a direction away from the first limiting portion (22), and the third limiting portion (29), the second limiting portion (23) and the bearing portion (21) being located on the same side of the first limiting portion (22) in a thickness direction.

31. The photovoltaic assembly (100) according to any one of claims 26 to 28, characterized in that The first frame (24) further comprises: a second rubber stop tooth (280), one end of the second rubber stop tooth (280) being connected to the first limiting portion (22), the other end of the second rubber stop tooth (280) extending in a direction away from the first limiting portion (22), and the second rubber stop tooth (280), the second limiting portion (23) and the bearing portion (21) being located on the same side of the first limiting portion (22) in a thickness direction.

32. The photovoltaic assembly (100) according to claim 31, characterized in that The one end of the second rubber stop tooth (280) is connected to an end of the first limiting portion (22) adjacent to the second limiting portion (23).

33. The photovoltaic assembly (100) according to claim 31, characterized in that One end of the second rubber stop tooth (280) is connected between the one end of the second limiting portion (23) and the other end of the first limiting portion (22), and the other end of the second rubber stop tooth (280) extends obliquely toward the bearing portion (21).

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