Photovoltaic module, module frame and manufacturing method of photovoltaic module

Abstract

The invention discloses a photovoltaic module, a module frame and a manufacturing method of the photovoltaic module, and relates to the technical field of photovoltaic modules. The photovoltaic module comprises a photovoltaic laminated piece and a module frame, the module frame comprises a first annular frame, a second annular frame, a protection part and a limiting bearing part, and the protection part is arranged on one side of the first annular frame in the thickness direction and arranged in the circumferential direction of the first annular frame; the limiting bearing part is arranged on one side of the second annular frame in the thickness direction and is arranged in the circumferential direction of the second annular frame; the first annular frame and the second annular frame are embedded; the photovoltaic laminated piece is placed between the first annular frame and the second annular frame, the front edge of the photovoltaic laminated piece abuts against the protection part, and the back edge of the photovoltaic laminated piece abuts against the limiting bearing part. According to the embodiment, the photovoltaic laminated part can be stably limited in the second cavity defined by the first annular frame and the second annular frame, the structure is simple, installation is convenient, and reliability is high.

Description

Technical Field

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

[0002] Photovoltaic modules are the core part of solar power generation systems, which can convert solar energy into electrical energy. Photovoltaic modules include solar cells and frames. After welding and lamination, the solar cells are installed in the frame and the junction box is installed to obtain photovoltaic modules. However, the existing photovoltaic module frames are split. During the installation process, two short frames and two long frames need to be glued together to form a complete module frame. The entire frame installation process is cumbersome and time-consuming. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a photovoltaic module, a module frame and a method for manufacturing a photovoltaic module, which can firmly limit the photovoltaic laminate in the second cavity enclosed by the first annular frame and the second annular frame, with a simple structure, easy installation and high reliability.

[0004] To achieve the above objective, according to one aspect of an embodiment of the present invention, a photovoltaic module is provided.

[0005] A photovoltaic module according to an embodiment of the present invention comprises: a photovoltaic laminate and a module frame, wherein:

[0006] The above-mentioned component frame includes: a first annular frame, a second annular frame, a protective portion, and a position-limiting bearing portion, wherein:

[0007] The protection portion is arranged on one side of the thickness direction of the first annular frame and along the circumference of the first annular frame;

[0008] The position-limiting bearing portion is arranged on one side of the second annular frame in the thickness direction and along the circumference of the second annular frame;

[0009] The first annular frame is embedded with the second annular frame;

[0010] The photovoltaic laminate is placed between the first annular frame and the second annular frame, and the front edge of the photovoltaic laminate abuts against the protective portion, and the back edge of the photovoltaic laminate abuts against the limit bearing portion.

[0011] To achieve the above objective, according to another aspect of an embodiment of the present invention, a component frame is provided.

[0012] A component frame according to an embodiment of the present invention is applied to any of the above photovoltaic components, including:

[0013] A first annular frame, a second annular frame, a protective portion, and a position-limiting bearing portion, wherein:

[0014] The protection portion is arranged on one side of the thickness direction of the first annular frame and along the circumference of the first annular frame;

[0015] The position-limiting bearing portion is arranged on one side of the second annular frame in the thickness direction and along the circumference of the second annular frame;

[0016] The first annular frame is embedded with the second annular frame to enclose a second cavity for accommodating and carrying the photovoltaic laminate.

[0017] To achieve the above objective, according to another aspect of an embodiment of the present invention, a method for manufacturing a photovoltaic module is provided.

[0018] A method for manufacturing a photovoltaic module according to an embodiment of the present invention includes:

[0019] Step A1, placing the photovoltaic laminate on the first annular frame, so that the edge of the cover plate in the photovoltaic laminate is placed on the protective part, and the side surface of the photovoltaic laminate is in contact with the first annular frame;

[0020] Step A2, placing the second annular frame on the above-mentioned photovoltaic laminate, and using external force to drive the above-mentioned second annular frame to engage with the above-mentioned first annular frame, so that the above-mentioned protective part abuts against the front edge of the above-mentioned photovoltaic laminate, and the limiting bearing part abuts against the back edge of the above-mentioned photovoltaic laminate.

[0021] An embodiment of the above invention has the following advantages or beneficial effects: through the engagement of the first annular frame and the second annular frame, the photovoltaic laminate can be firmly positioned in the second cavity enclosed by the first annular frame and the second annular frame, forming a photovoltaic assembly with simple structure, easy installation and high reliability.

[0022] The further effects of the above-mentioned non-conventional optional manner will be described below in conjunction with specific implementation examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

[0024] Figure 1 is an exploded schematic diagram of a photovoltaic assembly according to an embodiment of the present invention;

[0025] Figure 2 is an exploded schematic diagram of a photovoltaic laminate according to an embodiment of the present invention;

[0026] Figure 3 is a schematic longitudinal cross-sectional view of a first annular frame and a protective portion according to an embodiment of the present invention;

[0027] Figure 4 is a schematic longitudinal cross-sectional view of a second annular frame and a position limiting bearing portion according to an embodiment of the present invention;

[0028] Figure 5 is a schematic longitudinal cross-sectional view of a photovoltaic assembly according to an embodiment of the present invention;

[0029] Figure 6 is a schematic structural diagram of a first annular frame, a first connecting portion and a protective portion according to an embodiment of the present invention;

[0030] Figure 7 is a schematic structural diagram of a second annular frame and a connecting rod according to an embodiment of the present invention;

[0031] Figure 8 is a schematic structural diagram of a connecting rod according to an embodiment of the present invention;

[0032] Fig. 9 is a schematic diagram of the internal structure of a junction box according to an embodiment of the present invention;

[0033] Fig.10 is a schematic diagram of the bottom structure of a junction box according to an embodiment of the present invention;

[0034] Fig.11 is a schematic diagram of the structure of a component frame according to an embodiment of the present invention;

[0035] Fig.12 It is a schematic diagram of a process of preparing a photovoltaic module according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] 1-photovoltaic laminate; 11-cover plate; 12-front adhesive film; 13-photovoltaic cell array; 14-rear adhesive film; 15-back plate; 2-module frame; 21-first annular frame; 22-second annular frame; 23-protective part; 24-limiting bearing part; 241-first bearing plate; 242-second bearing plate; 25-extension part; 26-first connecting part; 261-slot; 27-second connecting part; 271-protrusion; 28-connecting rod; 3-junction box; 31-conductive module; 32-diode; 33-solder layer; 34-first hole; 35-second hole; 36-positive and negative cables; 4-sealant. DETAILED DESCRIPTION

[0038] With the development of photovoltaic technology, photovoltaic modules are gradually upgraded to large-size photovoltaic modules. In the prior art, the frames of photovoltaic modules are made of metal, mostly aluminum frames. Due to the high weight of aluminum frames, when assembling photovoltaic modules and installing photovoltaic power stations, there will be problems such as difficulty in handling, high labor costs and transportation costs. In addition, the current module frames are all split frames, that is, they include two short frames and two long frames. During the assembly process, the above four frames need to be assembled together by gluing or installing corner codes, and then the junction boxes are installed in sequence to form a complete module frame. The installation process of the module frame is complicated and cumbersome.

[0039] In addition, the cost of metal component frames is relatively high, and the conductivity of metal also makes photovoltaic modules prone to potential induced degradation (PID), resulting in power attenuation of photovoltaic modules.

[0040] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0041] It should be pointed out that the embodiments of the present invention and the technical features therein may be combined with each other without conflict.

[0042] Figure 1 FIG. 1 is a schematic diagram of an exploded structure of a photovoltaic module according to an embodiment of the present invention. Figure 1 As shown, the photovoltaic module of the embodiment of the present invention mainly includes: a photovoltaic laminate 1 and a module frame 2.

[0043] like Figure 2 As shown, the photovoltaic laminate 1 includes: a cover plate 11, a front adhesive film 12, a photovoltaic cell array 13, a rear adhesive film 14 and a back plate 15. The cover plate 11, the front adhesive film 12, the photovoltaic cell array 13, the rear adhesive film 14 and the back plate 15 are sequentially stacked and laminated to form the photovoltaic laminate 1. Among them, the photovoltaic cell array 13 may include a plurality of cell strings and interconnecting ribbons. The interconnecting ribbons are used to form effective electrical connections between solar cells and between cell strings.

[0044] The above-mentioned component frame 2 includes: a first annular frame 21 and a second annular frame 22, a protective portion 23, and a limit bearing portion 24. Among them, the first annular frame 21 and the second annular frame 22 can both be an integrated frame, that is, a ring frame formed by four sides that cannot be disassembled, thereby eliminating the need to glue the four sides together to form the component frame 2 when installing the photovoltaic module, thereby simplifying the installation process of the photovoltaic module.

[0045] like Figure 3 As shown, the protective portion 23 is arranged on one side of the thickness direction of the first annular frame 21, along the circumference of the first annular frame 21, and extends to the inner side of the first annular frame 21. The photovoltaic laminate 1 is placed between the first annular frame 21 and the second annular frame 22. The protective portion 23 extending from the inner side of the first annular frame 21 can limit the photovoltaic laminate 1 and protect its edge to prevent dust and other substances from entering the edge of the photovoltaic laminate 1 during the outdoor operation of the photovoltaic module.

[0046] The protection part 23 can be detachably connected to the first annular frame 21, or it can be an integral structure with the first annular frame 21. When the protection part 23 is detachably connected to the first annular frame 21, if the photovoltaic laminate 1 or the protection part 23 is damaged, the protection part 23 can be removed from the first annular frame 21 to repair and replace the photovoltaic laminate 1 or the protection part 23; when the protection part 23 is an integral structure with the first annular frame 21, the mechanical properties of the protection part 23 can be enhanced, so that the protection part 23 has a better limiting and protective effect on the photovoltaic laminate 1. At the same time, the installation process of the photovoltaic module is simplified, and there is no need to first install the protection part 23 on the first annular frame 21, and then assemble it with the photovoltaic module and the second annular frame 22 to form a photovoltaic module.

[0047] Preferably, the protection portion 23 and the first annular frame 21 are an integral structure.

[0048] like Figure 4 As shown, the above-mentioned limiting bearing part 24 is arranged on one side of the thickness direction of the above-mentioned second annular frame 22, and along the circumference of the above-mentioned second annular frame 22. The limiting bearing part 24 can be arranged on the inner side of the second annular frame 22. When the photovoltaic laminate 1 is placed between the above-mentioned first annular frame 21 and the above-mentioned second annular frame 22, the limiting bearing part 24 arranged on the inner side of the second annular frame 22 can support the photovoltaic laminate 1, limit the photovoltaic laminate 1 between the first annular frame 21 and the second annular frame 22, and prevent the photovoltaic laminate 1 from shifting.

[0049] The position-limiting bearing part 24 can be detachably connected to the second annular frame 22, or can be an integral structure with the second annular frame 22. When the protective part 23 is detachably connected to the first annular frame 21, if the photovoltaic laminate 1 is damaged or the position-limiting bearing part 24 is damaged, the photovoltaic laminate 1 or the protective part 23 can be repaired and replaced by removing the position-limiting bearing part 24 from the second annular frame 22; when the position-limiting bearing part 24 is an integral structure with the second annular frame 22, the mechanical properties of the position-limiting bearing part 24 can be enhanced, so that the position-limiting bearing part 24 has a better position-limiting and bearing effect on the photovoltaic laminate 1, and at the same time, the installation process of the photovoltaic module is simplified, and there is no need to first install the position-limiting bearing part 24 on the second annular frame 22, and then assemble it with the photovoltaic laminate 1 and the first annular frame 21 to form a photovoltaic module.

[0050] Furthermore, if Figure 4 As shown, the position-limiting bearing portion 24 may include a first bearing plate 241 and a second bearing plate 242. One end of the first bearing plate 241 is fixedly connected to one end of the second annular frame 22, and the other end of the first bearing plate 241 is fixedly connected to one end of the second bearing plate 242; the other end of the second bearing plate 242 is fixedly connected to the bottom plate of the second annular frame 22, and the first bearing plate 241, the second bearing plate 242, and the second annular frame 22 enclose a first cavity.

[0051] In the photovoltaic module, the first carrier plate 241 is in contact with the back edge of the photovoltaic laminate 1. The second carrier plate 242 is used to support the first carrier plate 241. The first carrier plate 241, the second carrier plate 242, the side plate of the second annular frame 22 and the bottom plate of the second annular frame 22 enclose a first cavity, thereby dispersing and bearing the external force on the first carrier plate 241 and even the second annular frame 22, and enhancing the mechanical properties of the second annular frame 22.

[0052] like Figure 4 and Figure 5 As shown, an extension portion 25 is provided on the other side of the second annular frame 22 in the thickness direction away from the first annular frame 21. The extension portion 25 extends toward the inner side of the second annular frame 22 to increase the support force of the second annular frame 22. The length of the extension portion 25 can be set according to actual conditions and is not limited here.

[0053] It is understandable that the extension portion 25 is connected to the bottom plate of the second annular frame 22, or the extension portion 25 can directly serve as the bottom plate of the second annular frame 22. In this way, the other side of the second supporting plate 242 can be connected to the extension portion 25.

[0054] Furthermore, the extension portion 25 and the second annular frame 22 may be an integral structure.

[0055] like Figure 5 As shown, the first annular frame 21 is embedded with the second annular frame 22, the photovoltaic laminate 1 is placed between the first annular frame 21 and the second annular frame 22, and the front edge of the photovoltaic laminate 1 is abutted against the protective portion 23, and the back edge of the photovoltaic laminate 1 is abutted against the limiting bearing portion 24 to prevent the photovoltaic laminate 1 from shifting.

[0056] It should be noted that the front side of the above-mentioned photovoltaic laminate 1 refers to the side of the cover plate 11 away from the photovoltaic cell array 13, that is, the side of the photovoltaic laminate 1 facing the sunlight during the operation of the photovoltaic module; the back side of the above-mentioned photovoltaic laminate 1 refers to the side of the back plate 15 away from the photovoltaic cell array 13, that is, the side of the photovoltaic laminate 1 away from the sunlight during the operation of the photovoltaic module.

[0057] The embedding manner of the first annular frame 21 and the second annular frame 22 includes but is not limited to embedding through an embedding piece, embedding through correspondingly arranged protrusions 271 and slots 261, etc.

[0058] In an optional embodiment, if Figure 3-Figure 6 As shown, the inner side wall of the first annular frame 21 is provided with a first connecting portion 26, wherein the edge of the photovoltaic laminate 1 abuts against the first connecting portion 26, the protective portion 23 and the limiting bearing portion 24. The outer side wall of the second annular frame 22 is provided with a second connecting portion 27. The first annular frame 21 and the second annular frame 22 can be engaged with each other through the first connecting portion 26 and the second connecting portion 27.

[0059] Exemplarily, one side of the first connection part 26 may be provided with a plurality of slots 261, and one side of the second connection part 27 may be provided with a plurality of protrusions 271 that are engaged with the slots 261; the plurality of slots 261 and the plurality of protrusions 271 are provided correspondingly, so that the first annular frame 21 and the second annular frame 22 can be engaged with each other through the slots 261 in the first connection part 26 and the protrusions 271 in the second connection part 27. At the same time, the other end of the first connection part 26 may be connected to the protection part 23, so that the plurality of slots 261 are located on the other side of the thickness direction of the first annular frame 21, and the plurality of slots 261 and the protection part 23 are located on the same side of the width direction of the first annular frame 21; the other end of the second connection part 27 may be connected to the position-limiting bearing part 24, so that the plurality of protrusions 271 are located on the other side of the thickness direction of the second annular frame 22, and the plurality of protrusions 271 and the position-limiting bearing part 24 are located on the same side of the second annular frame 22.

[0060] Furthermore, if Figure 4As shown, the protrusion 271 can be set as a triangular stop tooth with an oblique angle, wherein the oblique side of the protrusion 271 close to the position-limiting bearing portion 24 is perpendicular to the second connecting portion 27, forming the oblique side of the triangular stop tooth. In the process of embedding the second annular frame 22 into the first annular frame 21, due to the setting of the oblique side, the protrusion 271 can be more easily moved in the direction close to the protective portion 23 under the drive of an external force, so that the staff can easily engage the protrusion 271 into the slot 261. Correspondingly, the slot 261 for engaging the above-mentioned protrusion 271 can also be set as a longitudinal cross-sectional structure corresponding to the protrusion 271, so that the protrusion 271 can be more labor-savingly embedded in the slot 261, and because the side of the protrusion 271 close to the extension portion 25 is against the slot 261, it is not easy for the protrusion 271 to escape from the slot 261 after being engaged in the slot 261, so that the protrusion 271 and the slot 261 can be more firmly engaged. It is understandable that the shapes of the protrusion 271 and the slot 261 can also be set to other shapes, such as Figure 5 As shown, it can be set to a rectangle, etc., and no specific limitation is made here.

[0061] In an optional embodiment, if Figure 7 and Figure 8 As shown, the photovoltaic assembly may further include: a connecting rod 28 disposed on the second annular frame 22 and a junction box 3 disposed on the connecting rod 28 .

[0062] Furthermore, the second annular frame 22 includes two corresponding long frames and two corresponding short frames; the two long frames and the two short frames are in an integrated structure; the two ends of the connecting rod 28 are respectively connected to the middle parts of the two long frames, thereby strengthening the mechanical properties of the second annular frame 22, improving the bearing capacity of the second annular frame 22 on the photovoltaic laminate 1, and preventing the second annular frame 22 from deforming.

[0063] The connecting rod 28 may include several slot structures for placing the junction box 3. The slot structure may be arranged on the back or side of the connecting rod 28. Here, the back of the connecting rod 28 refers to the side thereof away from the photovoltaic laminate 1. As an example, the number of slot structures in each connecting rod 28 may be 3.

[0064] Furthermore, the connecting rod 28 and the second annular frame 22 may be an integral structure to reduce the installation process.

[0065] The junction box 3 is disposed in the groove structure of the connecting rod 28 and is electrically connected to the photovoltaic laminate 1 to conduct the electrical energy generated by the photovoltaic cell array 13 .

[0066] like Fig. 9As shown, the junction box 3 may include a conductive module 31 and a diode 32. The conductive module 31 is disposed at the bottom of the junction box 3, and a solder layer 33 is disposed on the surface thereof. The diode 32 is disposed on the upper side of the conductive module 31, that is, the side of the conductive module 31 away from the bottom of the junction box 3. The junction box 3 can effectively bypass the current generated by the hot spot effect through the built-in diode 32, thereby preventing the photovoltaic module from being burned due to the hot spot effect.

[0067] like Fig.10 As shown, after the conductive module 31 and the diode 32 are removed, there are a first hole 34 for fixing the conductive module 31 and the diode 32, a second hole 35 for passing the busbar lead, and a positive and negative cable 36 at the bottom of the junction box 3. Among them, the first hole 34 can be set below the conductive module 31 and corresponds to the four corners of the conductive module 31; the second hole 35 can be set below the conductive module 31 and arranged in parallel corresponding to the middle of the conductive module 31. The diode 32 can be fixed to the first hole 34 by a fixing member to prevent it from falling off. The busbar lead can be electrically connected to the conductive module 31 through the second hole 35 to transmit the collected internal current of the photovoltaic module to the conductive module 31. The positive and negative cables 36 can be connected to the conductive module 31 to output the current generated by the photovoltaic module to the external circuit.

[0068] In addition, the junction box 3 may also be provided with a box cover, so that the user can protect the conductive module 31 and the diode 32 inside the junction box 3 and prevent dust, moisture, etc. from entering the junction box 3 and damaging the components.

[0069] The junction box 3 may or may not be provided with a shell. In the case of not providing a shell, a first hole 34 and a second hole 35 are directly opened at the bottom of the slot structure, and positive and negative cables 36 are introduced into the slot structure, the conductive module 31 and the diode 32 are fixed through the first hole 34, and the lead of the bus bar passes through the second hole 35, so that all structures of the junction box 3 are directly arranged inside the slot structure, and the box cover is directly covered on the slot structure, thereby eliminating the shell of the junction box 3 and reducing material costs. When the outer shell is configured, the first hole 34 and the second hole 35 of the junction box 3 are directly arranged at the bottom of the outer shell, and the positive and negative cables 36 are introduced into the outer shell. The conductive module 31 and the diode 32 are fixed through the first hole 34, and the lead of the bus bar passes through the second hole 35. The groove structure is provided with a corresponding wire passing opening corresponding to the position of the second hole 35, so that the lead of the bus bar can pass through and enter the inner shell. The outer shell provided with all the structures of the junction box 3 is placed in the groove structure, and then the box cover is covered on the outer shell, so that the junction box 3 is designed independently, which is convenient for the subsequent maintenance and replacement of the junction box 3.

[0070] In an optional embodiment, if Figure 5As shown, when the above-mentioned photovoltaic laminate 1 is in contact with the protective part 23, the limiting bearing part 24 and the first connecting part 26, the gap between the photovoltaic laminate 1 and the protective part 23, the limiting bearing part 24 and the first connecting part 26 can be provided with a sealant 4, so as to tightly connect the photovoltaic laminate 1 with the above-mentioned three components, improve the bearing capacity of the photovoltaic module, ensure the sealing of the photovoltaic module, and prevent dust and moisture from entering the interior of the laminate to affect the internal circuit.

[0071] In an optional embodiment, the material of the first annular frame 21 and / or the second annular frame 22 is a plastic composite material.

[0072] As an example, the above-mentioned plastic composite material can be glass fiber reinforced polyurethane. Glass fiber reinforced polyurethane mainly includes high-performance polyurethane resin. It is understandable that the material of the above-mentioned first annular frame 21 and / or the above-mentioned second annular frame 22 can also adopt other plastic composite materials with similar or identical properties, which are not specifically limited here.

[0073] Plastic composite materials are corrosion-resistant, strong and lightweight. By using plastic composite materials as the material of the first annular frame 21 and / or the second annular frame 22, the mechanical properties of the photovoltaic module can be guaranteed while the weight of the frame and the photovoltaic module can be reduced, which is convenient for installation and reduces the transportation cost and labor installation cost of the photovoltaic module. At the same time, since plastic composite materials have good electrical insulation properties, they can effectively suppress the potential induced degradation (PID) effect of the photovoltaic module.

[0074] In addition, the plastic composite material has certain elasticity and plasticity. In the process of inserting the protrusion 271 into the slot 261, the external force drives the second annular frame 22 to move toward the direction close to the protection part 23, and the first connecting part 26 and the second connecting part 27 are slightly deformed so that the protrusion 271 can be inserted into the slot 261.

[0075] The photovoltaic assembly of the embodiment of the present invention can firmly limit the photovoltaic laminate 1 in the second cavity enclosed by the first annular frame 21 and the second annular frame 22 through the engagement of the first annular frame 21 and the second annular frame 22, thereby forming a photovoltaic assembly with simple structure, easy installation and high reliability.

[0076] In addition, the first annular frame 21 and the second annular frame 22 are combined together by a chimeric method, and both are an integrated structure, abandoning the split structure with four separated sides, simplifying the framing process, and shortening the installation time of the photovoltaic module. By arranging the connecting rod 28 on the second annular frame 22, the mechanical performance of the second annular frame 22 is improved.

[0077] By using the first annular frame 21 and the second annular frame 22 made of plastic composite materials, the component frame 2 has high strength and good insulation, and is also lighter, which greatly reduces the weight of the photovoltaic component.

[0078] Fig.11 2 is a schematic diagram of the structure of a component frame 2 according to an embodiment of the present invention. Figure 3 , Figure 4 and Fig.11 As shown, an embodiment of the present invention provides a component frame 2, which can be applied to any of the photovoltaic modules described above, including: a first annular frame 21 and a second annular frame 22, a protective portion 23, and a position-limiting bearing portion 24. Among them, the first annular frame 21 and the second annular frame 22 can both be an integrated frame, that is, a ring frame formed by four edges that are non-detachably enclosed, thereby eliminating the need to glue the four edges together to form the component frame 2 when installing the photovoltaic module, thereby simplifying the installation process of the photovoltaic module.

[0079] The protection portion 23 is disposed on one side of the thickness direction of the first annular frame 21, along the circumference of the first annular frame 21, and extends toward the inner side of the first annular frame 21. The position-limiting bearing portion 24 is disposed on one side of the thickness direction of the second annular frame 22, along the circumference of the second annular frame 22, and can be disposed on the inner side of the second annular frame 22. The first annular frame 21 and the second annular frame 22 are engaged with each other to enclose a second cavity for accommodating and carrying the photovoltaic laminate 1.

[0080] In an optional embodiment of the present invention, the protective portion 23 and the first annular frame 21 are an integral structure, which can enhance the mechanical properties of the protective portion 23, so that the protective portion 23 has a better limiting and protective effect on the photovoltaic laminate 1, thereby improving the overall mechanical properties of the first annular frame 21. At the same time, the assembly process of the component frame 2 is simplified, and the protective portion 23 does not need to be installed on the first annular frame 21 during the assembly process of the component frame 2.

[0081] In an optional embodiment of the present invention, the above-mentioned limiting bearing part 24 and the above-mentioned second annular frame 22 are an integrated structure, which can enhance the mechanical properties of the limiting bearing part 24, so that the limiting bearing part 24 has a better limiting and bearing effect on the photovoltaic laminate 1. At the same time, the assembly process is simplified, and there is no need to first install the limiting bearing part 24 on the second annular frame 22 during the assembly process of the component frame 2.

[0082] like Figure 4As shown, the above-mentioned limiting bearing part 24 is arranged on one side of the thickness direction of the above-mentioned second annular frame 22, and along the circumference of the above-mentioned second annular frame 22. The limiting bearing part 24 can be arranged on the inner side of the second annular frame 22. When the photovoltaic laminate 1 is placed between the above-mentioned first annular frame 21 and the above-mentioned second annular frame 22, the limiting bearing part 24 arranged on the inner side of the second annular frame 22 can support the photovoltaic laminate 1, limit the photovoltaic laminate 1 between the first annular frame 21 and the second annular frame 22, and prevent the photovoltaic laminate 1 from shifting.

[0083] In an optional embodiment of the present invention, the inner wall of the first annular frame 21 is provided with a first connecting portion 26 ; the outer wall of the second annular frame 22 is provided with a second connecting portion 27 ; the first connecting portion 26 and the second connecting portion 27 are embedded.

[0084] Exemplarily, one end of the first connection part 26 may be provided with a plurality of slots 261, and one end of the second connection part 27 may be provided with a plurality of protrusions 271; the plurality of slots 261 and the plurality of protrusions 271 are provided correspondingly, so that the first annular frame 21 and the second annular frame 22 can be engaged with each other through the slots 261 in the first connection part 26 and the protrusions 271 in the second connection part 27. At the same time, the other end of the first connection part 26 may be connected to the protection part 23, so that the plurality of slots 261 are located on the other side of the thickness direction of the first annular frame 21, and the plurality of slots 261 and the protection part 23 are located on the same side of the width direction of the first annular frame 21; the other end of the second connection part 27 may be connected to the position-limiting bearing part 24, so that the plurality of protrusions 271 are located on the other side of the thickness direction of the second annular frame 22, and the plurality of protrusions 271 and the position-limiting bearing part 24 are located on the same side of the second annular frame 22.

[0085] In an optional embodiment of the present invention, the component frame 2 further includes: a connecting rod 28 disposed on the second annular frame 22. Preferably, the connecting rod 28 and the second annular frame 22 are an integral structure to reduce the installation process.

[0086] Furthermore, the second annular frame 22 includes two corresponding long frames and two corresponding short frames; the two long frames and the two short frames are an integrated structure; the two ends of the connecting rod 28 are respectively connected to the middle parts of the two long frames, thereby strengthening the mechanical properties of the second annular frame 22, improving the bearing capacity of the second annular frame 22 on the photovoltaic laminate 1, and preventing the second annular frame 22 from deforming.

[0087] Furthermore, the connecting rod 28 includes a groove structure for placing the junction box 3. The groove structure can be arranged on the back or side of the connecting rod 28. Here, the back of the connecting rod 28 refers to the side thereof away from the photovoltaic laminate 1. As an example, the number of groove structures in each connecting rod 28 can be set to 3. The junction box 3 is arranged in the groove structure of the connecting rod 28. After the photovoltaic module is assembled, the junction box 3 can be electrically connected to the photovoltaic laminate 1 to export the electric energy generated by the photovoltaic cell array 13.

[0088] like Fig. 9 As shown, the junction box 3 may include a conductive module 31 and a diode 32. The conductive module 31 is disposed at the bottom of the junction box 3, and a solder layer 33 is disposed on the surface thereof. The diode 32 is disposed on the upper side of the conductive module 31, that is, the side of the conductive module 31 away from the bottom of the junction box 3. The junction box 3 can effectively bypass the current generated by the hot spot effect through the built-in diode 32, thereby preventing the photovoltaic module from being burned due to the hot spot effect.

[0089] like Fig.10 As shown, after the conductive module 31 and the diode 32 are removed, there are a first hole 34 for fixing the conductive module 31 and the diode 32, a second hole 35 for passing the lead of the bus bar, and a positive and negative cable 36 at the bottom of the junction box 3. Among them, the first hole 34 can be set below the conductive module 31 and corresponds to the four corners of the conductive module 31; the second hole 35 can be set below the conductive module 31 and arranged in parallel corresponding to the middle of the conductive module 31. The diode 32 can be fixed to the first hole 34 by a fixing member to prevent it from falling off. The bus bar lead can be electrically connected to the conductive module 31 through the second hole 35 to transmit the collected internal current of the photovoltaic module to the conductive module 31. The positive and negative cables 36 can be connected to the conductive module 31 to output the current generated by the photovoltaic module to the external circuit.

[0090] In addition, the junction box 3 may also be provided with a box cover, so that the user can protect the conductive module 31 and the diode 32 inside the junction box 3 and prevent dust, moisture, etc. from entering the junction box 3 and damaging the components.

[0091] The junction box 3 may or may not be provided with a shell. In the case of not providing a shell, a first hole 34 and a second hole 35 are directly opened at the bottom of the slot structure, and positive and negative cables 36 are introduced into the slot structure, the conductive module 31 and the diode 32 are fixed through the first hole 34, and the lead of the bus bar passes through the second hole 35, so that all structures of the junction box 3 are directly arranged inside the slot structure, and the box cover is directly covered on the slot structure, thereby eliminating the shell of the junction box 3 and reducing material costs. When the outer shell is configured, the first hole 34 and the second hole 35 of the junction box 3 are directly arranged at the bottom of the outer shell, and the positive and negative cables 36 are introduced into the outer shell. The conductive module 31 and the diode 32 are fixed through the first hole 34, and the lead of the bus bar passes through the second hole 35. The groove structure is provided with a corresponding wire passing opening corresponding to the position of the second hole 35, so that the lead of the bus bar can pass through and enter the inner shell. The outer shell provided with all the structures of the junction box 3 is placed in the groove structure, and then the box cover is covered on the outer shell, so that the junction box 3 is designed independently, which is convenient for the subsequent maintenance and replacement of the junction box 3.

[0092] In an optional embodiment of the present invention, the component frame 2 further includes: an extension portion 25 provided on the other side of the second annular frame 22 in the thickness direction away from the first annular frame 21; the extension portion 25 extends toward the inner side of the second annular frame 22 to increase the support force of the second annular frame 22. The length of the extension portion 25 can be set according to actual conditions and is not limited here.

[0093] In an optional embodiment of the present invention, the limiting bearing portion 24 includes a first bearing plate 241 and a second bearing plate 242, wherein one end of the first bearing plate 241 is fixedly connected to one end of the second annular frame 22; the other end of the first bearing plate 241 is fixedly connected to one end of the second bearing plate 242; the other end of the second bearing plate 242 is fixedly connected to the bottom plate of the second annular frame 22, and the first bearing plate 241, the second bearing plate 242 and the second annular frame 22 are combined to form a first cavity, thereby dispersing and bearing the external force exerted on the first bearing plate 241 and even the second annular frame 22, thereby enhancing the mechanical properties of the second annular frame 22.

[0094] In an optional embodiment of the present invention, the material of the first annular frame 21 and / or the second annular frame 22 is a plastic composite material.

[0095] As an example, the above-mentioned plastic composite material can be glass fiber reinforced polyurethane. Glass fiber reinforced polyurethane mainly includes high-performance polyurethane resin. It is understandable that the material of the above-mentioned first annular frame 21 and / or the above-mentioned second annular frame 22 can also adopt other plastic composite materials with similar or identical properties, which are not specifically limited here.

[0096] In addition, the plastic composite material has certain elasticity and plasticity. In the process of inserting the protrusion 271 into the slot 261, the external force drives the second annular frame 22 to move toward the direction close to the protection part 23, and the first connecting part 26 and the second connecting part 27 are slightly deformed so that the protrusion 271 can be inserted into the slot 261.

[0097] The component frame 2 of the embodiment of the present invention can firmly limit the photovoltaic laminate 1 in the second cavity enclosed by the first annular frame 21 and the second annular frame 22 through the engagement of the first annular frame 21 and the second annular frame 22, forming a photovoltaic component with simple structure, easy installation and high reliability.

[0098] In addition, the first annular frame 21 and the second annular frame 22 are combined together by a chimeric method, and both are an integrated structure, abandoning the split structure with four separated sides, simplifying the framing process, and shortening the installation time of the photovoltaic module. By arranging the connecting rod 28 on the second annular frame 22, the mechanical performance of the second annular frame 22 is improved.

[0099] By using the first annular frame 21 and the second annular frame 22 made of plastic composite materials, the component frame 2 has high strength and good insulation, and is also lighter, which greatly reduces the weight of the photovoltaic component.

[0100] Fig.12 It is a schematic diagram of the process of a method for manufacturing a photovoltaic module according to an embodiment of the present invention.

[0101] like Fig.12 As shown, an embodiment of the present invention further provides a method for manufacturing a photovoltaic module, comprising:

[0102] Step A1, placing the photovoltaic laminate 1 on the first annular frame 21, so that the edge of the cover plate in the photovoltaic laminate 1 is placed on the protective portion 23, and the side surface of the photovoltaic laminate 1 is in contact with the first annular frame 21;

[0103] Furthermore, the above step A1 further includes: before placing the photovoltaic laminate 1 on the first annular frame 21 provided with the sealant 4, providing the sealant 4 on the side of the above protective portion 23 for contacting with the edge of the cover of the photovoltaic laminate 1.

[0104] Step A2, place the second annular frame 22 above the above-mentioned photovoltaic laminate 1, and use external force to drive the above-mentioned second annular frame 22 to be embedded in the above-mentioned first annular frame 21, so that the above-mentioned protective part 23 abuts against the front edge of the above-mentioned photovoltaic laminate 1, and the limiting bearing part 24 abuts against the back edge of the above-mentioned photovoltaic laminate 1.

[0105] Furthermore, the external force drives the second annular frame 22 to be engaged with the first annular frame 21, including: under the drive of the external force, a plurality of protrusions 271 provided in the second connection portion 27 of the outer wall of the second annular frame 22 are engaged with a plurality of slots 261 provided in the first connection portion 26 of the inner wall of the first annular frame 21.

[0106] In an optional embodiment of the present invention, the method further includes:

[0107] Step A0: stacking and laminating the cover plate 11 , the front adhesive film 12 , the photovoltaic cell array 13 , the rear adhesive film 14 and the back plate 15 in sequence to form a photovoltaic laminate 1 .

[0108] In an optional embodiment of the present invention, the method further includes:

[0109] Step A3, electrically connecting the interconnecting ribbon of the photovoltaic laminate 1 and the junction box 3 of the connecting rod 28 ; wherein the connecting rod 28 is arranged on the second annular frame 22 .

[0110] Specifically, the interconnecting ribbon of the photovoltaic laminate 1 is effectively electrically connected to the conductive module 31 in the junction box 3 through the solder layer 33 on the conductive module 31 .

[0111] In an optional embodiment of the present invention, the method further includes:

[0112] Step A4, injecting potting glue into the junction box 3 to form a photovoltaic module.

[0113] By injecting potting glue into the junction box 3, the potting glue can have the functions of sealing and heat conduction after solidification. By sealing the junction box 3 with the potting glue, moisture and dust can be prevented from entering the junction box 3 during the operation of the photovoltaic module, and the heat generated by the junction box 3 during the operation of the photovoltaic module can be dissipated to avoid affecting the current conduction function of the junction box 3.

[0114] The preparation method of the photovoltaic module of the embodiment of the present invention can firmly limit the photovoltaic laminate 1 in the second cavity enclosed by the first annular frame 21 and the second annular frame 22 through the interlocking of the first annular frame 21 and the second annular frame 22, thereby forming a photovoltaic module with simple structure, convenient installation and high reliability. The first annular frame 21 and the second annular frame 22 are both one-piece structures, and the installation of the photovoltaic module can be achieved by interlocking, which abandons the installation process of the split structure with four separated sides that requires gluing and combination, thereby shortening the installation time of the photovoltaic module.

[0115] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic module, characterized in that: include: Photovoltaic laminate (1) and module frame (2), wherein: The component frame (2) comprises: a first annular frame (21), a second annular frame (22), a protection portion (23), and a position-limiting bearing portion (24), wherein: The protection portion (23) is arranged on one side of the first annular frame (21) in the thickness direction and along the circumference of the first annular frame (21); The position-limiting bearing portion (24) is disposed on one side of the second annular frame (22) in the thickness direction and along the circumference of the second annular frame (22); The first annular frame (21) is embedded with the second annular frame (22); The photovoltaic laminate (1) is placed between the first annular frame (21) and the second annular frame (22), and the front edge of the photovoltaic laminate (1) is in contact with the protective portion (23), and the back edge of the photovoltaic laminate (1) is in contact with the limiting bearing portion (24).

2. The photovoltaic module according to claim 1, characterized in that: The inner side wall of the first annular frame (21) is provided with a first connecting portion (26); The outer side wall of the second annular frame (22) is provided with a second connecting portion (27); The first connecting portion (26) is engaged with the second connecting portion (27); and / or, The protection portion (23) and the first annular frame (21) are an integral structure; and / or, The position-limiting bearing portion (24) and the second annular frame (22) are an integral structure.

3. The photovoltaic module according to claim 1, characterized in that: A plurality of slots (261) are provided on one side of the first connecting portion (26); A protrusion (271) engaged with the clamping groove (261) is provided on one side of the second connecting portion (27).

4. The photovoltaic module according to claim 1, characterized in that: Also includes: A connecting rod (28) arranged on the second annular frame (22) and a junction box (3) arranged on the connecting rod (28), wherein: The junction box (3) is electrically connected to the photovoltaic laminate (1).

5. The photovoltaic module according to claim 4, characterized in that: The second annular frame (22) comprises two correspondingly arranged long frames and two correspondingly arranged short frames; the two long frames and the two short frames are in an integrated structure; The two ends of the connecting rod (28) are respectively connected to the middle parts of the two long frame frames.

6. The photovoltaic module according to claim 3, characterized in that: The connecting rod (28) comprises a groove structure for placing the junction box (3); and / or, The connecting rod (28) and the second annular frame (22) are an integral structure.

7. The photovoltaic module according to claim 1, characterized in that: An extension portion (25) is provided on the other side of the second annular frame (22) in the thickness direction away from the first annular frame (21); The extension portion (25) extends toward the inner side of the second annular frame (22); Preferably, the position-limiting bearing portion (24) comprises a first bearing plate (241) and a second bearing plate (242), wherein: One end of the first carrying plate (241) is fixedly connected to one end of the second annular frame (22); The other end of the first supporting plate (241) is fixedly connected to one end of the second supporting plate (242); The other end of the second bearing plate (242) is fixedly connected to the bottom plate of the second annular frame (22), and the first bearing plate (241), the second bearing plate (242) and the second annular frame (22) enclose a first cavity; Preferably, the material of the first annular frame (21) and / or the second annular frame (22) is a plastic composite material.

8. A component frame, characterized in that: A photovoltaic module as claimed in any one of claims 1 to 7, comprising: A first annular frame, a second annular frame, a protective portion, and a position-limiting bearing portion, wherein: The protection portion is arranged on one side of the first annular frame in the thickness direction and along the circumference of the first annular frame; The position-limiting bearing portion is disposed on one side of the second annular frame in the thickness direction and along the circumference of the second annular frame; The first annular frame and the second annular frame are embedded in each other to enclose a second cavity for accommodating and carrying the photovoltaic laminate.

9. A method for manufacturing a photovoltaic module according to any one of claims 1 to 7, characterized in that: include: Step A1, placing a photovoltaic laminate on a first annular frame, placing an edge of a cover plate in the photovoltaic laminate on a protective portion, and a side surface of the photovoltaic laminate in contact with the first annular frame; Step A2, placing the second annular frame on top of the photovoltaic laminate, and using external force to drive the second annular frame to engage with the first annular frame, so that the protective part abuts against the front edge of the photovoltaic laminate, and the limiting bearing part abuts against the back edge of the photovoltaic laminate.

10. The method for manufacturing a photovoltaic module according to claim 9, characterized in that: The method further comprises: Step A3, electrically connecting the interconnecting ribbon of the photovoltaic laminate to the junction box in the connecting rod; wherein the connecting rod is arranged on the second annular frame.

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