Photovoltaic module and photovoltaic module preparation method

Abstract

The invention provides a photovoltaic module and a photovoltaic module preparation method, the photovoltaic module comprises a back plate, a first adhesive film layer, a battery piece layer, a second adhesive film layer and a panel which are arranged in sequence, the back plate comprises a honeycomb core, the honeycomb core is provided with honeycomb holes, the photovoltaic module further comprises an embedded part, and the embedded part is located on the side, away from the first adhesive film layer, of the back plate. The embedded parts are arranged corresponding to the honeycomb holes and connected with the hole walls of the honeycomb holes, and the embedded parts are used for being connected with fasteners. In the design, the embedded part is used as a pre-installation part to be connected with the fastener, so that the back plate is fixed on the external to-be-installed body, and the installation convenience between the photovoltaic module and the external to-be-installed body can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic module and a method for preparing the photovoltaic module. Background Art

[0002] With the gradual emergence of new distributed photovoltaic application scenarios such as old buildings and car roofs, honeycomb photovoltaic modules with lightweight and rigid characteristics are gradually being used. Honeycomb photovoltaic modules mostly use honeycomb panels as the base. Since the back of the honeycomb photovoltaic module is a flat structure, it is impossible to punch holes and fix it at the frame position like traditional glass packaging and metal frame photovoltaic modules during installation. At the same time, in order to ensure the utilization rate of the effective power generation area on the front of the honeycomb photovoltaic module, it is also impossible to punch holes and fix it at the four sides or four corners of the honeycomb photovoltaic module, resulting in complex installation operations of the honeycomb photovoltaic module. Therefore, how to effectively improve the installation convenience of honeycomb photovoltaic modules has become an urgent problem to be solved. Summary of the invention

[0003] The embodiments of the present application provide a photovoltaic module and a method for preparing the photovoltaic module, which can solve the problem in the related art that the honeycomb photovoltaic module is inconvenient to install due to the limitation of its own structure.

[0004] In the first aspect, an embodiment of the present application provides a photovoltaic module; the photovoltaic module includes a back panel, a first adhesive film layer, a battery cell layer, a second adhesive film layer and a panel arranged in sequence, the back panel includes a honeycomb core, the honeycomb core has honeycomb holes, the photovoltaic module also includes an embedded part, the embedded part is located on the side of the back panel away from the first adhesive film layer, the embedded part is arranged corresponding to the honeycomb hole and connected to the hole wall of the honeycomb hole, and the embedded part is used to connect with the fastener.

[0005] Based on the photovoltaic module of the embodiment of the present application, embedded parts are designed at the honeycomb hole positions of the honeycomb core of the back panel. On the one hand, the embedded parts as pre-installed parts can cooperate with fasteners to install the back panel on the external body to be installed, thereby realizing the installation between the entire photovoltaic module and the external body to be installed, which can effectively improve the installation convenience of the photovoltaic module; on the other hand, the embedded parts are equivalent to reinforcement bodies that can strengthen the structural strength of the back panel in the corresponding area, thereby improving the structural strength of the entire photovoltaic module, which can effectively reduce the possibility of deformation or breakage during the installation of the photovoltaic module.

[0006] In a second aspect, an embodiment of the present application provides a method for preparing a photovoltaic module; the preparation method comprises:

[0007] Pre-inserting embedded parts into the honeycomb holes of the honeycomb core of the back plate;

[0008] Laying a first adhesive film layer on the surface of the back plate on the side away from the embedded part;

[0009] Laying the battery sheet on the surface of the first adhesive film layer away from the back plate to form a battery sheet layer;

[0010] Laying a second adhesive film layer on the surface of the battery layer away from the first adhesive film layer;

[0011] Placing a panel on the surface of the second adhesive film layer facing away from the battery layer;

[0012] After placement, put it into the laminator for lamination.

[0013] Based on the photovoltaic module preparation method of the embodiment of the present application, embedded parts are pre-inserted at the honeycomb hole position of the honeycomb core of the back panel, and the installation process of the embedded parts is integrated into the lamination process of the photovoltaic module, which can effectively reduce the difficulty of assembly between the embedded parts and the honeycomb core of the back panel. In the photovoltaic module obtained by the preparation method, the embedded parts can be used as pre-installed parts to cooperate with fasteners to install the back panel on the external body to be installed, thereby realizing the installation between the entire photovoltaic module and the external body to be installed, which can effectively improve the installation convenience of the photovoltaic module. In the photovoltaic module obtained by the preparation method, the embedded parts are equivalent to reinforcement bodies that can strengthen the structural strength of the back panel in the corresponding area, thereby improving the structural strength of the entire photovoltaic module, which can effectively reduce the possibility of deformation or breakage during the installation of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of a photovoltaic module in one embodiment of the present application;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 is a cross-sectional schematic diagram of a photovoltaic module in one embodiment of the present application;

[0018] Figure 4 This is a schematic diagram of an assembly cross-sectional structure of a photovoltaic assembly in one embodiment of the present application installed on an external body to be installed;

[0019] Figure 5 This is a schematic diagram of the structure of a pre-embedded pedestal in one embodiment of the present application;

[0020] Figure 6This is a schematic structural diagram of an embedded part in one embodiment of the present application including a plurality of embedded pedestals;

[0021] Figure 7 This is a schematic structural diagram of an embedded part in another embodiment of the present application including a plurality of embedded pedestals;

[0022] Figure 8 This is a structural schematic diagram of a pre-embedded part in another embodiment of the present application including a plurality of pre-embedded seats;

[0023] Fig. 9 This is a schematic structural diagram of a photovoltaic assembly in another embodiment of the present application;

[0024] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at B in the middle;

[0025] Fig.11 This is a schematic diagram of an assembly cross-sectional structure of a photovoltaic assembly in another embodiment of the present application installed on an external body to be installed;

[0026] Fig.12 This is a schematic diagram of the structure of a pre-embedded gasket in an embodiment of the present application;

[0027] Fig.13 This is a schematic structural diagram of a pre-embedded gasket in another embodiment of the present application;

[0028] Fig.14 This is a schematic structural diagram of a pre-embedded gasket in another embodiment of the present application;

[0029] Fig.15 This is a schematic structural diagram of a pre-embedded gasket in another embodiment of the present application;

[0030] Fig.16 This is a schematic structural diagram of a pre-embedded gasket in another embodiment of the present application;

[0031] Fig.17 This is a schematic structural diagram of an embedded part in one embodiment of the present application, including an embedded pedestal and an embedded gasket;

[0032] Fig.18 This is a structural schematic diagram of the embedded parts in another embodiment of the present application including an embedded base and an embedded gasket;

[0033] Fig.19 This is a flow chart of a method for preparing a photovoltaic module in one embodiment of the present application;

[0034] Fig. 20 This is a flow chart of a method for preparing a photovoltaic module in another embodiment of the present application;

[0035] Fig.21This is a flow chart of a method for preparing a photovoltaic module in another embodiment of the present application;

[0036] Fig. 22 This is a flow chart of a method for preparing a photovoltaic module in another embodiment of the present application;

[0037] Fig.23 This is a flow chart of a method for preparing a photovoltaic module in another embodiment of the present application.

[0038] Figure numerals: 1. photovoltaic module; 10. back plate; 11. honeycomb core; 11a. honeycomb hole; 12. first substrate; 13. second substrate; 14. third adhesive film layer; 15. fourth adhesive film layer; 20. embedded parts; 21. embedded pedestal; 211. base; 211a. threaded hole; 212. top seat; 22. embedded gasket; 221. substrate; 221a. mounting hole; 222. claw piece; 223. support piece; 30. first adhesive film layer; 40. battery cell layer; 50. second adhesive film layer; 60. panel; 70. rivet nut; 80. fastener; 81. fastening screw; 2. external body to be installed. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0042] Please refer to Figure 1-Figure 4 As shown, in the first aspect, the present application proposes a photovoltaic component 1, which can effectively improve the convenience of installation between the photovoltaic component 1 and an external object 2 to be installed.

[0043] The photovoltaic module 1 includes a back panel 10, a first adhesive film layer 30, a battery cell layer 40, a second adhesive film layer 50 and a panel 60 which are arranged in sequence; the back panel 10 includes a honeycomb core 11, and the honeycomb core 11 has a honeycomb hole 11a; the photovoltaic module 1 also includes an embedded part 20; the embedded part 20 is located on the side of the back panel 10 away from the first adhesive film layer 30, the embedded part 20 is arranged corresponding to the honeycomb hole 11a and is connected to the hole wall of the honeycomb hole 11a, and the embedded part 20 is used to connect with the fastener 80.

[0044] The following combination Figure 1-Figure 18 The specific structure of the photovoltaic module 1 is introduced in detail. The photovoltaic module 1 includes a back plate 10, a first adhesive film layer 30, a battery cell layer 40, a second adhesive film layer 50, a panel 60 and an embedded part 20 which are arranged in sequence.

[0045] like Figure 1-Figure 4 As shown, the back plate 10 is used as the bottom plate of the photovoltaic module 1 to provide support for structures such as the cell layer 40 and the panel 60 of the photovoltaic module 1. The back plate 10 includes a honeycomb core 11, and the honeycomb core 11 has honeycomb holes 11a; the honeycomb core 11 can be but is not limited to at least one of a metal honeycomb core, a polymer honeycomb core, a glass cloth honeycomb core and a plastic honeycomb core; thus, the honeycomb core 11 has the characteristics of being light and having good strength.

[0046] The first adhesive film layer 30 is used as one of the adhesive parts of the photovoltaic module 1 to bond and fix the cell layer 40 to the back plate 10; the specific material of the first adhesive film layer 30 is not limited here, and the designer can reasonably design it according to actual needs; for example, the first adhesive film layer 30 can include but is not limited to at least one of POE (Polyolefin elastomer) adhesive layer, EVA (Ethylene-vinyl acetate copolymer) adhesive layer, PVB (Polyvinlbutaral) adhesive layer, polyurethane adhesive layer, and epoxy resin adhesive layer. In this way, when the photovoltaic module 1 is laminated, the first adhesive film layer 30 undergoes a cross-linking reaction, so that the cell layer 40 and the back plate 10 are firmly bonded through the first adhesive film layer 30.

[0047] The cell layer 40 is a structural component in the photovoltaic module 1 for converting solar energy into electrical energy. The specific material of the cell layer 40 is not limited here, and designers can make a reasonable choice based on actual needs. Since the cell layer 40 is not the main innovation of this application, the specific structure of the cell layer 40 will not be introduced in detail here.

[0048] The second adhesive film layer 50 is used as another adhesive member of the photovoltaic module 1 to bond and fix the panel 60 to the battery layer 40; the specific material of the second adhesive film layer 50 is not limited here, and the designer can reasonably design it according to actual needs; for example, the second adhesive film layer 50 can include but is not limited to at least one of POE (Polyolefin elastomer) adhesive layer, EVA (Ethylene-vinyl acetate copolymer) adhesive layer, PVB (Polyvinlbutaral) adhesive layer, polyurethane adhesive layer, and epoxy resin adhesive layer. In this way, when the photovoltaic module 1 is laminated, the second adhesive film layer 50 undergoes a cross-linking reaction, so that the panel 60 and the battery layer 40 are firmly bonded through the second adhesive film layer 50.

[0049] The panel 60 is used as a cover plate of the photovoltaic module 1 to block the cell layer 40 from direct contact with the outside world, and plays a buffering and protective role for the cell layer 40. The panel 60 is a transparent polymer panel, wherein the transparent polymer panel can include but is not limited to at least one of ETFE (Ethylene-terafluoroethlene, ethylene-tetrafluoroethylene copolymer) panel, CPI (Colorless and transparent-Polyimide, colorless and transparent polyimide) panel and transparent PET (Polyethyleneterephthalate, transparent polyethylene terephthalate) panel.

[0050] like Figure 1-Figure 4 As shown, the embedded part 20 is used as a pre-installed part of the photovoltaic module 1 to cooperate with the fastener 80 to install the back plate 10 on the external installation body 2, thereby realizing the installation between the entire photovoltaic module 1 and the external installation body 2. The external installation body 2 can include but is not limited to a wall, a frame or other structures that can be used to install the photovoltaic module 1.

[0051] The embedded part 20 is located on the side of the back plate 10 away from the first adhesive film layer 30 (that is, on the side of the back plate 10 facing the external installation body 2), so as to facilitate the connection between the fastener 80 and the embedded part 20 to reduce the difficulty of installing the photovoltaic module 1.

[0052] The embedded component 20 is disposed corresponding to the honeycomb hole 11 a , that is, the projection of the embedded component 20 on the plane where the port of the honeycomb hole 11 a is located at least partially falls within the area corresponding to the port of the honeycomb hole 11 a .

[0053] The embedded part 20 is connected to the hole wall of the honeycomb hole 11a; the specific connection method between the embedded part 20 and the hole wall of the honeycomb hole 11a is not limited here, and the designer can make a reasonable design according to actual needs; for example, the embedded part 20 can be but not limited to being detachably connected to the hole wall of the honeycomb hole 11a by at least one of screw connection, clip connection or plug-in connection; for another example, the embedded part 20 can also be but not limited to being non-detachably connected to the hole wall of the honeycomb hole 11a by welding, gluing, injection molding or 3D printing.

[0054] The embedded part 20 is used to connect with the fastener 80 to fix the back plate 10 to the external body to be installed 2, so as to realize the installation between the entire photovoltaic assembly 1 and the external body to be installed 2. The specific form of the fastener 80 is not limited here, and the designer can make a reasonable design according to actual needs; and it can be understood that for embedded parts 20 with different specific structures, the corresponding specific forms of the fastener 80 are also different. The specific connection method between the fastener 80 and the embedded part 20 is not limited here, and the designer can make a reasonable design according to actual needs; for example, the fastener 80 can be, but is not limited to, connected to the embedded part 20 by at least one of screw connection, clamping connection or plug-in connection; and it can be understood that for different connection methods, the specific forms of the fastener 80 and the corresponding embedded part 20 are also different.

[0055] Based on the photovoltaic module 1 in the embodiment of the present application, an embedded part 20 is designed at the position of the honeycomb hole 11a of the honeycomb core 11 of the back panel 10. On the one hand, the embedded part 20 as a pre-installed part can cooperate with the fastener 80 to install the back panel 10 on the external body to be installed 2, thereby realizing the installation between the entire photovoltaic module 1 and the external body to be installed 2, which can effectively improve the installation convenience of the photovoltaic module 1; on the other hand, the embedded part 20 is equivalent to a reinforcing body that can strengthen the structural strength of the back panel 10 in its corresponding area, thereby improving the structural strength of the entire photovoltaic module 1, which can effectively reduce the possibility of deformation or breakage during the installation of the photovoltaic module 1.

[0056] Furthermore, if Figure 1-Figure 4 As shown, the material of the embedded part 20 is one of metal, fiber or special engineering plastic. For example, when the material of the embedded part 20 is metal, the embedded part 20 can be, but not limited to, aluminum alloy, stainless steel and other materials; for another example, when the material of the embedded part 20 is fiber, the embedded part 20 can be, but not limited to, carbon fiber, glass fiber and other materials; for another example, when the material of the embedded part 20 is special engineering plastic, the embedded part 20 can be, but not limited to, polyetheretherketone, polytetrafluoroethylene, polyamide, polyimide, polyethersulfone, polyphenylene sulfone resin and other materials.

[0057] Furthermore, if Figure 1-Figure 4As shown, the surface of the embedded part 20 is provided with an adhesive layer (not shown in the figure), and the embedded part 20 is connected to the hole wall of the honeycomb hole 11a through the adhesive layer. Among them, the adhesive layer can include but is not limited to at least one of POE (Polyolefinelastomer, polyolefin elastomer) adhesive layer, EVA (Ethylene-vinyl acetate copolymer, ethylene-vinyl acetate copolymer) adhesive layer, PVB (Polyvinl butaral, polyvinyl butyral) adhesive layer, polyurethane adhesive layer, and epoxy resin adhesive layer. In this way, by designing an adhesive layer on the surface of the embedded part 20, the embedded part 20 with the adhesive layer is inserted into the honeycomb hole 11a. When the photovoltaic module 1 is laminated, the adhesive layer covering the surface of the embedded part 20 undergoes a cross-linking reaction, so that the embedded part 20 and the hole wall of the honeycomb hole 11a are firmly bonded through the adhesive layer, which can effectively reduce the assembly difficulty between the embedded part 20 and the back plate 10.

[0058] It should be noted that when the embedded part 20 is made of metal and the corresponding honeycomb core 11 is also made of metal, the embedded part 20 is connected to the hole wall of the honeycomb hole 11a by welding. The honeycomb hole 11a is filled with welding material (which may include but is not limited to solder), and the welding material is melted to form a firm weld between the embedded part 20 and the hole wall of the honeycomb hole 11a, which can effectively reduce the assembly difficulty between the embedded part 20 and the back plate 10. Of course, the embedded part 20 can also be designed as an integral part with the honeycomb core 11. In this case, the embedded part 20 can be integrally formed with the honeycomb core 11 by injection molding or 3D printing, but is not limited to it.

[0059] It can be understood that, for the photovoltaic module 1, the number of embedded parts 20 can be one or more (more than two); designers can insert different numbers of embedded parts 20 into the honeycomb holes 11a of the honeycomb core 11 according to different installation conditions requiring different mechanical strength; and when multiple embedded parts 20 are inserted into the honeycomb holes 11a of the honeycomb core 11, the specific structures of the multiple embedded parts 20 can be the same or different.

[0060] For example, Figure 4-Figure 5 As shown, the embedded part 20 includes at least one embedded pedestal 21; each embedded pedestal 21 is arranged corresponding to a honeycomb hole 11a and connected to the hole wall of the corresponding honeycomb hole 11a, and at least one embedded pedestal 21 has a threaded hole 211a; the embedded pedestal 21 is used to be threadedly connected with the fastener 80. Among them, the fastener 80 includes at least one fastening screw 81; each fastening screw 81 is connected with a threaded hole 211a to fix the back plate 10 to the external body to be installed 2. In this way, the fastener 80 passes through the external body to be installed 2 and is threadedly connected with the threaded hole 211a of the embedded pedestal 21, so that the connection between the photovoltaic module 1 and the external body to be installed 2 can be realized, which can effectively reduce the difficulty of installing the photovoltaic module 1.

[0061] Specifically, Figure 4-Figure 5 As shown, for each embedded part 20, at least one embedded pedestal 21 includes a base 211 and a top seat 212; the base 211 has at least a portion of a threaded hole 211a; the top seat 212 is connected to the end surface of the base 211, and the peripheral side surface of the top seat 212 is arranged farther away from the hole axis of the threaded hole 211a than the peripheral side surface of the base 211 to form a step structure. The base 211 extends into the honeycomb hole 11a so that the step surface of the step structure abuts against the end of the honeycomb hole 11a.

[0062] Among them, the base 211 is a part of the embedded pedestal 21. The specific structure of the base 211 is not limited here, and the designer can make a reasonable design according to actual needs; for example, the cross-section of the base 211 in the direction perpendicular to the hole axis of the threaded hole 211a can be but not limited to circular, triangular, rectangular, pentagonal or hexagonal, etc.

[0063] The top seat 212 is another part of the embedded pedestal 21. The specific structure of the top seat 212 is not limited here. The designer can make a reasonable design according to actual needs; for example, the cross section of the top seat 212 in the direction perpendicular to the hole axis of the threaded hole 211a can be, but not limited to, circular, triangular, rectangular, pentagonal or hexagonal, etc. It should be noted that no matter what the cross section shape of the top seat 212 in the direction perpendicular to the hole axis of the threaded hole 211a is, the cross section of the top seat 212 in the direction perpendicular to the hole axis of the threaded hole 211a should be able to completely cover the hole cross section of the honeycomb hole 11a.

[0064] The top seat 212 is connected to the end surface of the base 211; the top seat 212 and the base 211 can be an integral structural design or a split structural design; for example, when the top seat 212 and the base 211 are an integral structural design, the top seat 212 and the base 211 can be but not limited to being integrally formed by injection molding or 3D printing; for another example, when the top seat 212 and the base 211 are a split structural design, the top seat 212 and the base 211 can be but not limited to being connected by one or more of gluing, welding, screwing, snapping or plugging.

[0065] The threaded hole 211a may or may not penetrate the base 211. The threaded hole 211a may be designed entirely on the base 211, in which case the top seat 212 is designed with a through hole corresponding to the threaded hole 211a, and the fastener 80 is provided with the through hole and is threadedly connected to the threaded hole 211a; of course, the threaded hole 211a may also be partially designed on the base 211, in which case the top seat 212 is designed with the remaining threaded hole 211a corresponding to the partial threaded hole 211a, and the fastener 80 is first threadedly connected to the threaded hole 211a on the top seat 212 and then threadedly connected to the threaded hole 211a on the base 211.

[0066] It should be noted that, for each embedded component 20, the number of embedded seats 21 can be one or more. For example, when the embedded component 20 includes one embedded seat 21, the embedded seat 21 includes a base 211 and a top seat 212; for another example, when the embedded component 20 includes multiple embedded seats 21, the multiple embedded seats 21 can be formed into an integrated structure by injection molding or 3D printing, but not limited to, and at least one embedded seat 21 includes a base 211 and a top seat 212.

[0067] The exemplary structure of the embedded part 20 including at least one embedded seat 21 may include but is not limited to the following embodiments.

[0068] like Figure 5 As shown, in the first embodiment, the embedded component 20 includes an embedded base 21, and the embedded base 21 includes a base 211 and a top base 212, and the base 211 has a threaded hole 211a.

[0069] like Figure 6 As shown, in the second embodiment, the embedded component 20 includes seven embedded seats 21, each of the seven embedded seats 21 includes a base 211 and a top seat 212, and the base 211 of the embedded seat 21 located in the center has a threaded hole 211a.

[0070] like Figure 7 As shown, in the third embodiment, the embedded component 20 includes nineteen embedded seats 21, each of the nineteen embedded seats 21 includes a base 211 and a top seat 212, and the bases 211 of the six embedded seats 21 in the middle have threaded holes 211a.

[0071] like Figure 8 As shown, in the fourth embodiment, the embedded part 20 includes seven embedded seats 21, the embedded seat 21 located in the center includes a base 211 and a top seat 212, the six embedded seats 21 located at the periphery each include only a top seat 212, and the base 211 of the embedded seat 21 located in the center has a threaded hole 211a.

[0072] For example, Figure 9-11 As shown, the embedded part 20 includes an embedded gasket 22; the embedded gasket 22 is arranged corresponding to at least one honeycomb hole 11a, and the embedded gasket 22 is connected to the hole wall of the corresponding at least part of the honeycomb hole 11a, and the embedded gasket 22 has a mounting hole 221a. The photovoltaic module 1 also includes a rivet nut 70; the rivet nut 70 passes through the mounting hole 221a and is connected to the embedded gasket 22 by riveting, and the rivet nut 70 is used to be threadedly connected with the fastener 80. Among them, the fastener 80 includes a fastening screw 81, and the fastening screw 81 is connected to the rivet nut 70 to fix the back plate 10 to the external body to be installed 2. In this way, the fastener 80 passes through the external body to be installed 2 and is threadedly connected to the threaded hole 211a of the rivet nut 70, so that the connection between the photovoltaic module 1 and the external body to be installed 2 can be achieved, which can effectively reduce the difficulty of installing the photovoltaic module 1.

[0073] Specifically, Figure 11-Figure 12 As shown, for each embedded part 20, the embedded gasket 22 includes a base plate 221 and a claw plate 222; the base plate 221 is arranged corresponding to at least one honeycomb hole 11a, and the base plate 221 has a mounting hole 221a; the claw plate 222 is bent and connected to the edge of the base plate 221, and the claw plate 222 is connected to the hole wall of the corresponding honeycomb hole 11a. The rivet nut 70 is provided with the mounting hole 221a and is connected to the base plate 221 by riveting.

[0074] Among them, the substrate 221 is a part of the embedded gasket 22. The specific structure of the substrate 221 is not limited here, and the designer can make a reasonable design according to actual needs; for example, the cross-section of the substrate 221 in the direction perpendicular to the hole axis of the mounting hole 221a can be but is not limited to circular, triangular, rectangular, pentagonal or hexagonal, etc.

[0075] The claw piece 222 is another part of the embedded gasket 22. The specific structure of the claw piece 222 is not limited here, and the designer can make a reasonable design according to actual needs; for example, the cross-section of the claw piece 222 in the direction parallel to the hole axis of the mounting hole 221a can be but is not limited to circular, triangular, rectangular, pentagonal or hexagonal, etc.

[0076] The claw piece 222 is bent and connected to the edge of the base sheet 221; the claw piece 222 and the base sheet 221 can be an integral structure or a split structure; for example, when the claw piece 222 and the base sheet 221 are an integral structure, the claw piece 222 and the base sheet 221 can be integrally formed by, but not limited to, injection molding or 3D printing; for another example, when the claw piece 222 and the base sheet 221 are split structures, the claw piece 222 and the base sheet 221 can be connected by, but not limited to, gluing or welding. The claw piece 222 can be located on the inner side of the hole wall of the honeycomb hole 11a above it; the claw piece 222 can also be located on the outer side of the hole wall of the honeycomb hole 11a above it.

[0077] It should be noted that, for each embedded part 20 , the number of the embedded gasket 22 is one; and for the embedded gasket 22 , the number of the base plate 221 is one, and the number of the claw plates 222 can be one or more.

[0078] The exemplary structure of the embedded gasket 22 may include but is not limited to the following embodiments.

[0079] like Fig.12 As shown, in the first embodiment, the embedded gasket 22 includes a base plate 221 and six claw plates 222. The base plate 221 is arranged corresponding to a honeycomb hole 11a. The cross-section of the base plate 221 is hexagonal. The center area of ​​the base plate 221 has a mounting hole 221a. The six claw plates 222 are bent and connected to the six side edges of the base plate 221 one by one.

[0080] like Fig.13 As shown, in the second embodiment, the embedded gasket 22 includes a base plate 221 and a claw plate 222. The base plate 221 is arranged corresponding to a honeycomb hole 11a. The cross-section of the base plate 221 is hexagonal. The center area of ​​the base plate 221 has a mounting hole 221a. The claw plate 222 is arranged along the periphery of the base plate 221.

[0081] like Fig.14 As shown, in the third embodiment, the embedded gasket 22 includes a base plate 221 and six claw plates 222. The base plate 221 is arranged corresponding to the seven honeycomb holes 11a (the base plate 221 can be divided into seven small units with hexagonal cross-sections arranged one by one corresponding to the seven honeycomb holes 11a). The base plate 221 has a mounting hole 221a in the center area, and the six claw plates 222 are evenly spaced around the hole axis of the mounting hole 221a.

[0082] like Fig.15 As shown, in the fourth embodiment, the embedded gasket 22 includes a base plate 221 and six claw plates 222. The base plate 221 is arranged corresponding to the nineteen honeycomb holes 11a (the base plate 221 can be divided into nineteen small units with hexagonal cross-sections arranged one by one corresponding to the nineteen honeycomb holes 11a). The base plate 221 has a mounting hole 221a in the center area, and the six claw plates 222 are evenly spaced around the hole axis of the mounting hole 221a.

[0083] like Fig.16As shown, in the fifth embodiment, the embedded gasket 22 includes a base plate 221, six claw plates 222 and six support plates 223. The base plate 221 is arranged corresponding to the seven honeycomb holes 11a (the base plate 221 can be divided into seven small units with hexagonal cross-sections arranged one by one corresponding to the seven honeycomb holes 11a). The base plate 221 has a mounting hole 221a in the center area, and the six claw plates 222 are evenly spaced around the hole axis of the mounting hole 221a. The six support plates 223 are located in the middle of the base plate 221 and are evenly spaced around the hole axis of the mounting hole 221a.

[0084] For example, Figure 17-Figure 18 As shown, the embedded part 20 may also include the embedded base 21 and the embedded gasket 22; the embedded base 211 and the embedded gasket 22 may be integrally formed by, but not limited to, injection molding or 3D printing. At this time, the fastening screw 81 passes through the external body to be installed 2 and is threadedly connected with the threaded hole 211a of the rivet nut and / or the threaded hole 211a of the embedded base 21, so that the connection between the photovoltaic module 1 and the external body to be installed 2 can be achieved, which can effectively reduce the difficulty of installing the photovoltaic module 1.

[0085] Please refer to Figure 19-Figure 23 As shown, in a second aspect, the present application proposes a method for preparing a photovoltaic module 1 , and the photovoltaic module 1 prepared by the preparation method is easy to be installed with an external object 2 to be installed.

[0086] like Fig.19 As shown, Fig.19 A flowchart of a method for preparing a photovoltaic module 1 provided in an embodiment of the present application, the method for preparing a photovoltaic module comprises the following steps:

[0087] Step S101 : pre-insert the embedded part 20 into the honeycomb hole 11 a of the honeycomb core 11 of the back plate 10 .

[0088] It should be noted that the photovoltaic module 1 includes a back plate 10; the back plate 10 is used as the bottom plate of the photovoltaic module 1 to provide support for structures such as the cell layer 40 and the panel 60 of the photovoltaic module 1; the back plate 10 includes a honeycomb core 11, and the honeycomb core 11 has honeycomb holes 11a. The embedded part 20 is used as a pre-installed part of the photovoltaic module 1 to cooperate with the fastener 80 to install the back plate 10 on the external body 2 to be installed, thereby realizing the installation between the entire photovoltaic module 1 and the external body 2 to be installed.

[0089] Step S102 : applying a first adhesive film layer 30 on a surface of the back plate 10 facing away from the embedded component 20 .

[0090] It should be noted that the photovoltaic module 1 includes a first adhesive film layer 30; the first adhesive film layer 30 is used as one of the adhesive components of the photovoltaic module 1 to bond and fix the cell layer 40 to the back plate 10; for example, the first adhesive film layer 30 may include but is not limited to at least one of a POE (Polyolefin elastomer) adhesive layer, an EVA (Ethylene-vinyl acetate copolymer) adhesive layer, a PVB (Polyvinl butaral) adhesive layer, a polyurethane adhesive layer, and an epoxy resin adhesive layer. In this way, when the photovoltaic module 1 is laminated, the first adhesive film layer 30 undergoes a cross-linking reaction, so that the cell layer 40 and the back plate 10 are firmly bonded through the first adhesive film layer 30.

[0091] In step S103 , battery cells are laid on the surface of the first adhesive film layer 30 facing away from the back plate 10 to form a battery cell layer 40 .

[0092] Step S104 , laying a second adhesive film layer 50 on the surface of the battery cell layer 40 away from the first adhesive film layer 30 .

[0093] It should be noted that the photovoltaic module 1 includes a second adhesive film layer 50; the second adhesive film layer 50 is used as another adhesive member of the photovoltaic module 1 to bond and fix the panel 60 to the battery layer 40; for example, the second adhesive film layer 50 can include but is not limited to at least one of a POE (Polyolefin elastomer) adhesive layer, an EVA (Ethylene-vinyl acetate copolymer) adhesive layer, a PVB (Polyvinl butaral) adhesive layer, a polyurethane adhesive layer, and an epoxy resin adhesive layer. In this way, when the photovoltaic module 1 is laminated, the second adhesive film layer 50 undergoes a cross-linking reaction, so that the panel 60 and the battery layer 40 are firmly bonded through the second adhesive film layer 50.

[0094] Step S105 , placing the panel 60 on the surface of the second adhesive film layer 50 facing away from the battery cell layer 40 .

[0095] It should be noted that the photovoltaic module 1 includes a panel 60; the panel 60 is used as a cover plate of the photovoltaic module 1 to block the battery layer 40 from direct contact with the outside world, and plays a buffering and protective role for the battery layer 40. The panel 60 is a transparent polymer panel 60, wherein the transparent polymer panel 60 can include but is not limited to at least one of an ETFE (Ethylene-terafluoroethlene, ethylene-tetrafluoroethylene copolymer) panel 60, a CPI (Colorless and transparent-Polyimide, colorless and transparent polyimide) panel 60 and a transparent PET (Polyethylene terephthalate, transparent polyethylene terephthalate) panel 60.

[0096] Step S106, after placement, put it into a laminator for lamination.

[0097] It should be noted that the specific lamination operation process of the photovoltaic module 1 is not limited here, and the designer can make a reasonable design according to actual needs. For example, before the photovoltaic module 1 to be laminated is placed in the laminator, the laminator is first preheated to the preset lamination temperature; after the photovoltaic module 1 to be laminated is placed in the laminator, the laminator is evacuated to keep the lower chamber of the laminator in a vacuum state, and the upper chamber of the laminator is pressurized by gradually increasing the pressure according to the preset gradient until the relative pressure of the last pressurization is the preset pressure, and the last pressurization process is maintained for a preset time. Among them, the preset lamination temperature can be but not limited to 140℃~180℃; the preset pressure can be but not limited to -80kPa~-20kPa; the preset time can be but not limited to 10min~60min. In this embodiment, the vacuuming time is 360s, the preset lamination temperature is 155℃, the relative pressure of the last pressurization is -50kPa, and the holding time is 15min. In this way, the connection stability between the layers of the photovoltaic module 1 after lamination can be ensured, and the bubble content in each film layer after curing can be ensured to be low.

[0098] Based on the preparation method of the photovoltaic module 1 in the embodiment of the present application, the embedded part 20 is pre-inserted at the position of the honeycomb hole 11a of the honeycomb core 11 of the back plate 10, and the installation process of the embedded part 20 is integrated into the lamination process of the photovoltaic module 1, which can effectively reduce the difficulty of assembling the embedded part 20 and the honeycomb core 11 of the back plate 10. In the photovoltaic module 1 prepared by the preparation method, the embedded part 20 can be used as a pre-installed part to cooperate with the fastener 80 to install the back plate 10 on the external body to be installed 2, thereby realizing the installation between the entire photovoltaic module 1 and the external body to be installed 2, which can effectively improve the installation convenience of the photovoltaic module 1. In the photovoltaic module 1 prepared by the preparation method, the embedded part 20 is equivalent to a reinforcing body that can strengthen the structural strength of the back plate 10 in its corresponding area, thereby improving the structural strength of the entire photovoltaic module 1, which can effectively reduce the possibility of deformation or breakage during the installation of the photovoltaic module 1.

[0099] Furthermore, the back panel 10 includes a first substrate 12, a honeycomb panel and a second substrate 13. The surface of the first substrate 12 is coated with a first adhesive film layer 30; Fig. 20 As shown, Fig. 20 A flowchart of a photovoltaic module preparation method provided in another embodiment of the present application; the above step S101 includes step S201, step S202, step S203, step S204 and step S205, specifically:

[0100] Step S201 : applying a third adhesive film layer 14 on a surface of the first substrate 12 away from the first adhesive film layer 30 .

[0101] It should be noted that the first substrate 12, as the upper substrate of the backplane 10, is used to shape the honeycomb core 11 on the one hand and to carry the battery layer 40 on the other hand; the first substrate 12 can isolate water vapor and ensure the insulation of the battery layer 40 and the honeycomb core 11. The first substrate 12 may include, but is not limited to, at least one of a polyethylene terephthalate-based composite board, a polyvinylidene fluoride-based composite board, and a polyimide-based composite board. Among them, the polyethylene terephthalate-based composite board is made of a polyethylene terephthalate (PET)-based composite material; the polyvinylidene fluoride-based composite board is made of a polyvinylidene fluoride (PVDF)-based composite material; and the polyimide-based composite board is made of a polyimide (PI)-based composite material. The third adhesive film layer 14 is used as one of the adhesive parts of the back plate 10 to bond and fix the honeycomb core 11 to the first substrate 12; the specific material of the third adhesive film layer 14 is not limited here, and the designer can reasonably design it according to actual needs; for example, the third adhesive film layer 14 can include but is not limited to at least one of POE (Polyolefin elastomer) adhesive layer, EVA (Ethylene-vinyl acetate copolymer) adhesive layer, PVB (Polyvinlbutaral) adhesive layer, polyurethane adhesive layer, and epoxy resin adhesive layer. In this way, when the photovoltaic module 1 is laminated, the third adhesive film layer 14 undergoes a cross-linking reaction, so that the honeycomb core 11 and the first substrate 12 are firmly bonded through the third adhesive film layer 14.

[0102] Step S202 , placing the honeycomb core 11 on the surface of the third adhesive film layer 14 facing away from the first substrate 12 .

[0103] It should be noted that the honeycomb core 11 serves as the thermal insulation layer of the back panel 10 , and the honeycomb core 11 may be but is not limited to at least one of a metal honeycomb core, a polymer honeycomb core, a glass cloth honeycomb core and a plastic honeycomb core; in this way, the honeycomb core 11 has the characteristics of being lightweight and having good strength.

[0104] Step S203 , inserting the embedded component 20 into the honeycomb hole 11 a of the honeycomb core 11 .

[0105] Step S204 , laying a fourth adhesive film layer 15 on the surface of the honeycomb core 11 away from the third adhesive film layer 14 .

[0106] It should be noted that the fourth adhesive film layer 15 is used as another adhesive member of the back plate 10 to bond and fix the second substrate 13 to the honeycomb core 11; the specific material of the fourth adhesive film layer 15 is not limited here, and the designer can reasonably design it according to actual needs; for example, the fourth adhesive film layer 15 can include but is not limited to at least one of POE (Polyolefin elastomer) adhesive layer, EVA (Ethylene-vinyl acetate copolymer) adhesive layer, PVB (Polyvinl butaral) adhesive layer, polyurethane adhesive layer, and epoxy resin adhesive layer. In this way, when the photovoltaic module 1 is laminated, the fourth adhesive film layer 15 undergoes a cross-linking reaction, so that the second substrate 13 and the honeycomb core 11 are firmly bonded through the fourth adhesive film layer 15.

[0107] Step S205 , placing a second substrate 13 on the surface of the fourth adhesive film layer 15 facing away from the honeycomb core 11 .

[0108] It should be noted that the second substrate 13 is used as the lower substrate of the back plate 10 to shape the honeycomb core 11. The second substrate 13 can block the honeycomb core 11 from direct contact with the outside world, and play a buffering and protective role for the honeycomb core 11. The second substrate 13 can include but is not limited to at least one of an aluminum panel 60, a polyethylene terephthalate-based composite board, a polyvinylidene fluoride-based composite board, a polyimide-based composite board, and a special engineering plastic board. Among them, the special engineering plastic board can be a polytetrafluoroethylene plastic board, a polyamide plastic board, a polyethersulfone plastic board, a polyetheretherketone plastic board, a polyphenylene sulfone resin plastic board, or other types of special engineering plastic boards, which are not limited here.

[0109] Furthermore, if Fig.21 As shown, Fig.21 A flowchart of a photovoltaic module preparation method provided in another embodiment of the present application; before the above step S203, step S301 is also included, which is specifically:

[0110] Step S301 : applying an adhesive layer on the surface of the embedded component 20 .

[0111] It should be noted that the embedded part 20 is connected to the hole wall of the honeycomb hole 11a through an adhesive layer. Among them, the adhesive layer can include but is not limited to at least one of a POE (Polyolefin elastomer) adhesive layer, an EVA (Ethylene-vinylacetate copolymer, ethylene-vinyl acetate copolymer) adhesive layer, a PVB (Polyvinl butaral, polyvinyl butyral) adhesive layer, a polyurethane adhesive layer, and an epoxy resin adhesive layer. In this way, by designing an adhesive layer on the surface of the embedded part 20, the embedded part 20 with the adhesive layer is inserted into the honeycomb hole 11a. When the photovoltaic module 1 is laminated, the adhesive layer covering the surface of the embedded part 20 undergoes a cross-linking reaction, so that the embedded part 20 and the hole wall of the honeycomb hole 11a are firmly bonded through the adhesive layer, which can effectively reduce the assembly difficulty between the embedded part 20 and the honeycomb core 11.

[0112] Furthermore, when the embedded part 20 is made of metal and the honeycomb core 11 is made of metal, Fig. 22 As shown, Fig. 22 A flowchart of a photovoltaic module preparation method provided in another embodiment of the present application; the above step S203 further includes step S401, which is specifically:

[0113] Step S401 , filling the honeycomb holes 11 a of the honeycomb core 11 with welding material, and melting the welding material to fix the embedded component 20 to the honeycomb core 11 .

[0114] It should be noted that the welding material may be, but is not limited to, solder. In this way, the embedded component 20 and the hole wall of the honeycomb hole 11 a are firmly welded by the welding material, which can effectively reduce the difficulty of assembling the embedded component 20 and the honeycomb core 11 .

[0115] Further, when the embedded component 20 includes an embedded gasket 22, the embedded gasket 22 has a mounting hole 221a; Fig.23 As shown, Fig.23 A flowchart of a photovoltaic module preparation method provided in another embodiment of the present application; the above step S106 also includes step S501 and step S502, specifically:

[0116] Step S501, lamination is completed, and the laminated photovoltaic module 1 is taken out from the laminator after cooling.

[0117] Step S502, passing the rivet nut 70 through the mounting hole 221a and connecting it to the embedded gasket 22 by riveting.

[0118] It should be noted that, by designing the rivet nut 70 to cooperate with the embedded gasket 22, the fastener 80 passes through the external body to be installed 2 and is threadedly connected to the threaded hole 211a of the rivet nut 70, so that the connection between the photovoltaic component 1 and the external body to be installed 2 can be achieved, which can effectively reduce the installation difficulty of the photovoltaic component 1.

[0119] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-described embodiments only express several implementation methods of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, several deformations and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of this application shall be based on the attached claims.

Claims

1. A photovoltaic module, characterized in that: It includes a back plate, a first adhesive film layer, a battery sheet layer, a second adhesive film layer and a panel arranged in sequence; the back plate includes a honeycomb core, and the honeycomb core has honeycomb holes; The photovoltaic assembly further includes an embedded part, which is located on a side of the back plate away from the first adhesive film layer, is arranged corresponding to the honeycomb hole and connected to the hole wall of the honeycomb hole, and is used to connect with a fastener.

2. The photovoltaic module according to claim 1, characterized in that: The embedded part is made of metal, fiber or special engineering plastic; and / or An adhesive layer is provided on the surface of the embedded part, and the embedded part is connected to the hole wall of the honeycomb hole through the adhesive layer.

3. The photovoltaic module according to claim 2, characterized in that: The adhesive layer includes at least one of a POE adhesive layer, an EVA adhesive layer, a PVB adhesive layer, a polyurethane adhesive layer, and an epoxy resin adhesive layer.

4. The photovoltaic module according to claim 1, characterized in that: The embedded part is made of metal, the honeycomb core is made of metal, and the embedded part is connected to the hole wall of the honeycomb hole by welding.

5. A method for preparing a photovoltaic module, characterized in that: include: Pre-inserting embedded parts into the honeycomb holes of the honeycomb core of the back plate; Laying a first adhesive film layer on the surface of the back plate on one side away from the embedded component; Laying a battery cell on the surface of the first adhesive film layer away from the back plate to form a battery cell layer; Laying a second adhesive film layer on the surface of the battery layer away from the first adhesive film layer; Placing a panel on the surface of the second adhesive film layer facing away from the battery layer; After placement, put it into the laminator for lamination.

6. The method for preparing a photovoltaic module according to claim 5, characterized in that: The back plate comprises a first substrate, the honeycomb core and a second substrate, and the first adhesive film layer is applied on the surface of the first substrate; The step of pre-inserting the embedded parts into the honeycomb holes of the honeycomb core of the back plate comprises: Laying a third adhesive film layer on the surface of the first substrate away from the first adhesive film layer; Placing the honeycomb core on the surface of the third adhesive film layer facing away from the first substrate; Inserting the embedded part into the honeycomb hole of the honeycomb core; Laying a fourth adhesive film layer on the surface of the honeycomb core away from the third adhesive film layer; The second substrate is placed on the surface of the fourth adhesive film layer facing away from the honeycomb core.

7. The method for preparing a photovoltaic module according to claim 6, characterized in that: Before the step of inserting the embedded component into the honeycomb hole of the honeycomb core, the method further includes: An adhesive layer is laid on the surface of the embedded part.

8. The method for preparing a photovoltaic module according to claim 6, characterized in that: The embedded component is made of metal, and the honeycomb core is made of metal; after the step of inserting the embedded component into the honeycomb hole of the honeycomb core, the method further includes: The honeycomb holes of the honeycomb core are filled with welding material, and the welding material is melted to fix the embedded component to the honeycomb core.

9. The method for preparing a photovoltaic module according to claim 5, characterized in that: The embedded part includes an embedded gasket, and the embedded gasket has a mounting hole; after the step of placing the embedded part into a laminator for lamination, the method further includes: After lamination is completed, the laminated photovoltaic module is taken out from the laminator after cooling; The rivet nut is passed through the mounting hole and connected to the embedded gasket by riveting.

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