Embedded part and photovoltaic module

Abstract

The utility model provides an embedded part and a photovoltaic module. The embedded part is applied to the photovoltaic module. The photovoltaic module comprises a back plate, the back plate is provided with honeycomb holes, and the embedded part is used for being connected with a fastener so that the back plate can be fixed to an external body to be installed. The embedded part comprises a main body part and a connecting part; the number of the main body part is one, and the main body part corresponds to at least one honeycomb hole; the number of the connecting parts is one or more, the connecting parts are connected with the main body part, and the connecting parts are inserted into the honeycomb holes and connected with the hole walls of the honeycomb holes. 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] This application relates to the technical field of photovoltaic power generation, and particularly to an embedded part and a photovoltaic module. Background Art

[0002] With the gradual emergence of new distributed photovoltaic application scenarios such as old buildings and the tops of vehicles, honeycomb-shaped photovoltaic modules with lightweight and rigid characteristics are gradually coming into application. Honeycomb-shaped photovoltaic modules mostly use honeycomb panels as the base. Since their back is a flat structure, when installing honeycomb-shaped photovoltaic modules, they cannot be fixed by drilling holes at the frame positions like traditional glass-encapsulated and metal-frame photovoltaic modules. At the same time, to ensure the utilization rate of the effective power generation area on the front of the honeycomb-shaped photovoltaic module, it is also impossible to perform perforation fixation at the four sides or four corners of the honeycomb-shaped photovoltaic module, resulting in complex installation operations for honeycomb-shaped photovoltaic modules. Therefore, how to effectively improve the installation convenience of honeycomb-shaped photovoltaic modules has become an urgent problem to be solved. Summary of the Utility Model

[0003] The embodiments of this application provide an embedded part and a photovoltaic module, which can solve the problem that the installation of honeycomb-shaped photovoltaic modules is inconvenient due to the limitations of their own structures in related technologies.

[0004] In a first aspect, the embodiments of this application provide an embedded part; the embedded part is applied to a photovoltaic module, the photovoltaic module includes a backplane, the backplane has honeycomb holes, and the embedded part is used to connect with a fastener to fix the backplane to an external object to be installed. The embedded part includes a main body part and a connecting part. The number of main body parts is one, the main body part corresponds to at least one honeycomb hole, the number of connecting parts is one or more, the connecting parts are connected to the main body part, and the connecting parts are inserted into the honeycomb holes and connected to the hole walls of the honeycomb holes.

[0005] In a second aspect, the embodiments of this application provide a photovoltaic module; the photovoltaic module includes the above-mentioned embedded part.

[0006] Based on the embedded part and the photovoltaic module of the embodiments of this application, by designing the main body part, the main body part is used to carry one or more connecting parts; by designing the connecting part, the connecting part is used to connect with the hole wall of the honeycomb hole to realize the connection between the embedded part and the backplane; in this way, the embedded part, as a pre-installation part, can cooperate with the fastener to install the backplane on the external object to be installed, so as to realize the installation between the entire photovoltaic module and the external object to be installed, and can effectively improve the installation convenience of the photovoltaic module. Description of the Drawings

[0007] To more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0008] Figure 1 Structural schematic diagram of a photovoltaic module in an embodiment of the present application;

[0009] Figure 2 For Figure 1 Enlarged structural schematic diagram at position A in

[0010] Figure 3 Assembled cross-sectional structural schematic diagram of a photovoltaic module in an embodiment of the present application installed on an external object to be installed;

[0011] Figure 4 Structural schematic diagram of a pre-embedded part in an embodiment of the present application including a top seat and a bottom seat;

[0012] Figure 5 For Figure 4 Side view schematic diagram of

[0013] Figure 6 For Figure 4 Cross-sectional structural schematic diagram of the pre-embedded part inserted into the honeycomb hole in

[0014] Figure 7 Structural schematic diagram of a pre-embedded part in another embodiment of the present application including a top seat and a bottom seat;

[0015] Figure 8 Structural schematic diagram of a pre-embedded part in yet another embodiment of the present application including a top seat and a bottom seat;

[0016] Figure 9 Structural schematic diagram of a pre-embedded part in still another embodiment of the present application including a top seat and a bottom seat;

[0017] Figure 10 Structural schematic diagram of a photovoltaic module in another embodiment of the present application;

[0018] Figure 11 For Figure 10 Enlarged structural schematic diagram at position B in

[0019] Figure 12 Assembled cross-sectional structural schematic diagram of a photovoltaic module in another embodiment of the present application installed on an external object to be installed;

[0020] Figure 13Schematic structural diagram of the embedded part in an embodiment of the present application, including a substrate and a claw piece;

[0021] Figure 14 For Figure 13 Schematic structural diagram of the embedded part inserted into the honeycomb hole and connected to the inner wall of the honeycomb hole;

[0022] Figure 15 For Figure 13 Schematic structural diagram of the embedded part inserted into the honeycomb hole and connected to the outer wall of the honeycomb hole;

[0023] Figure 16 For Figure 13 Side view schematic diagram;

[0024] Figure 17 Schematic structural diagram of the embedded part in another embodiment of the present application, including a substrate and a claw piece;

[0025] Figure 18 Schematic structural diagram of the embedded part in yet another embodiment of the present application, including a substrate and a claw piece;

[0026] Figure 19 Schematic structural diagram of the embedded part in still another embodiment of the present application, including a substrate and a claw piece;

[0027] Figure 20 Schematic structural diagram of the embedded part in yet another embodiment of the present application, including a substrate and a claw piece;

[0028] Figure 21 Schematic structural diagram of the embedded part in an embodiment of the present application, including a top seat, a bottom seat, a substrate and a claw piece;

[0029] Figure 22 Schematic structural diagram of the embedded part in another embodiment of the present application, including a top seat, a bottom seat, a substrate and a claw piece.

[0030] Reference numerals: 1, photovoltaic module; 10, backsheet; 11, honeycomb core; 11a, honeycomb hole; 20, embedded part; 21, main body part; 211, top seat; 212, substrate; 212a, mounting hole; 22, connecting part; 221, bottom seat; 221a, threaded hole; 222, claw piece; 222a, first surface; 222b, second surface; 223, support piece; 30, blind rivet nut; 40, fastener; 41, fastening screw; 2, external object to be installed. Detailed implementation manners

[0031] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present application are shown 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, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "inner", "outer", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used 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.

[0034] Please refer to Figures 1 - 3 As shown, the present application provides a photovoltaic module 1, which can effectively improve the installation convenience between it and an external object to be installed 2.

[0035] The photovoltaic module 1 includes a backsheet 10 and an embedded part 20. The backsheet 10 has honeycomb holes 11a; the embedded part 20 is located on the side of the backsheet 10 facing the external object to be installed 2, the embedded part 20 is arranged corresponding to the honeycomb holes 11a and is connected to the pore walls of the honeycomb holes 11a, and the embedded part 20 is used to be connected to a fastener 40 to fix the backsheet 10 to the external object to be installed 2.

[0036] As Figures 1 - 3 shown, among them, the backsheet 10 serves as the bottom plate of the photovoltaic module 1 to provide support for structures such as the battery cells (not shown in the figure) of the photovoltaic module 1. The backsheet 10 has honeycomb holes 11a; the specific structure of the backsheet 10 is not limited herein, and designers can make reasonable designs according to actual needs; for example, the backsheet 10 can include, but is not limited to, a first substrate (not shown in the figure), a honeycomb core 11, and a second substrate (not shown in the figure) that are sequentially stacked.

[0037] The embedded part 20 is used as a pre-installation part of the photovoltaic module 1 and is used to cooperate with the fastener 40 to install the backplane 10 on the external body 2 to be installed, so as to realize the installation between the entire photovoltaic module 1 and the external body 2 to be installed; wherein, the external body 2 to be installed may include, but is not limited to, a wall, a frame or other structures that can be used to install the photovoltaic module 1.

[0038] The embedded part 20 is located on the side of the backplane 10 facing the external body 2 to be installed, which is convenient for connecting the fastener 40 and the embedded part 20, so as to reduce the installation difficulty of the photovoltaic module 1.

[0039] The embedded part 20 is arranged corresponding to the honeycomb hole 11a, that is, the projection of the embedded part 20 on the plane where the port of the honeycomb hole 11a is located at least partially falls within the area corresponding to the port of the honeycomb hole 11a.

[0040] 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 detachably connected to the hole wall of the honeycomb hole 11a by at least one of screwing, clamping or plugging; for another example, the embedded part 20 can also be non-detachably connected to the hole wall of the honeycomb hole 11a by welding, gluing, injection molding or 3D printing.

[0041] The embedded part 20 is used to connect with the fastener 40 to fix the backplane 10 to the external body 2 to be installed, so as to realize the installation between the entire photovoltaic module 1 and the external body 2 to be installed. The specific form of the fastener 40 is not limited here, and the designer can make a reasonable design according to actual needs; the specific connection method between the fastener 40 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 40 can be connected to the embedded part 20 by at least one of screwing, clamping or plugging.

[0042] It can be understood that for the photovoltaic module 1, the number of the embedded parts 20 can be one or more (more than two); the designer can design different numbers of embedded parts 20 for the photovoltaic module 1 according to installation conditions with different mechanical strength requirements; and when the photovoltaic module 1 includes multiple embedded parts 20, the specific structures of the multiple embedded parts 20 can be the same or different. And it can be understood that for different specific structures of the embedded parts 20, the specific forms of the corresponding fasteners 40 are also different.

[0043] By designing the embedded part 20 at the position of the honeycomb holes 11a on the backplane 10, on the one hand, the embedded part 20, as a pre-installed part, can cooperate with the fastener 40 to install the backplane 10 on the external object to be installed 2, thereby realizing the installation between the entire photovoltaic module 1 and the external object to be installed 2. In this way, the installation convenience of the photovoltaic module 1 can be effectively improved; on the other hand, the embedded part 20 is equivalent to a reinforcing body and can strengthen the structural strength of the backplane 10 in its corresponding area, thereby enhancing the structural strength of the entire photovoltaic module 1. In this way, the possibility of deformation or fracture during the installation of the photovoltaic module 1 can be effectively reduced.

[0044] Furthermore, as Figures 1 - 3 shown, the material of the embedded part 20 is one of metal, fiber or special engineering plastics. For example, when the material of the embedded part 20 is metal, the embedded part 20 can be, but is not limited to, made of materials such as aluminum alloy, stainless steel, etc.; again, for example, when the material of the embedded part 20 is fiber, the embedded part 20 can be, but is not limited to, made of materials such as carbon fiber, glass fiber, etc.; furthermore, for example, when the material of the embedded part 20 is special engineering plastics, the embedded part 20 can be, but is not limited to, made of materials such as polyether ether ketone, polytetrafluoroethylene, polyamide, polyimide, polyethersulfone, polyphenylene sulfone resin, etc.

[0045] Furthermore, as Figures 1 - 3 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 be, but is not limited to, including 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, by designing the adhesive layer on the surface of the embedded part 20 and inserting the embedded part 20 with the adhesive layer into the honeycomb hole 11a, during the lamination of the photovoltaic module 1, 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 backplane 10.

[0046] It should be noted that when the material of the embedded part 20 is metal, the honeycomb holes 11a are filled with a welding layer (not shown in the figure), and the embedded part 20 is connected to the hole wall of the honeycomb holes 11a through the welding layer. Among them, the preparation material of the welding layer can be but is not limited to solder. In this way, the embedded part 20 and the hole wall of the honeycomb holes 11a are firmly welded through the welding layer, 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 integrally designed with the honeycomb core 11. At this time, the embedded part 20 can be integrally formed with the honeycomb core 11 by but is not limited to injection molding or 3D printing.

[0047] As Figure 4 shown, the embedded part 20 is a pre-installation part of the photovoltaic module 1; the embedded part 20 includes a main body part 21 and a connecting part 22; the number of the main body parts 21 is one, and the main body part 21 is arranged corresponding to at least one honeycomb hole 11a; the number of the connecting parts 22 can be one or more (more than two), the connecting part 22 is connected to the main body part 21, and the connecting part 22 is inserted into the honeycomb hole 11a and connected to the hole wall of the honeycomb hole 11a.

[0048] Among them, the main body part 21, as a part of the embedded part, is used to carry one or more connecting parts 22, and the specific form of the main body part 21 will be introduced in detail below. The orthographic projection of the connecting part 22 on the plane where the port of the honeycomb hole 11a is located can only cover the port of one honeycomb hole 11a or can cover the ports of multiple honeycomb holes 11a.

[0049] The connecting part 22, as another part of the embedded part, is used to connect with the hole wall of the honeycomb hole 11a to realize the connection between the entire embedded part 20 and the back plate 10. The specific form of the connecting part 22 will be introduced in detail below. The connecting part 22 is connected to the main body part 21, and the connecting part 22 and the main body part 21 can be an integral structure or a split structure; for example, when the connecting part 22 and the main body part 21 are an integral structure, the connecting part 22 and the main body part 21 can be integrally formed by but is not limited to injection molding or 3D printing; again, for example, when the connecting part 22 and the main body part 21 are a split structure, the connecting part 22 and the main body part 21 can be connected by but is not limited to one or more of bonding, welding, screwing, clamping or plugging. The surface of the connecting part 22 is provided with the above-mentioned adhesive layer, and the connecting part 22 is connected to the hole wall of the honeycomb hole 11a through the adhesive layer.

[0050] By designing the main body part 21, the main body part 21 is used to carry one or more connecting parts 22; by designing the connecting part 22, the connecting part 22 is used to connect with the pore wall of the honeycomb hole 11a to realize the connection between the embedded part 20 and the back plate 10; thus, the embedded part 20 can cooperate with the fastener 40 as a pre-installed part to install the back plate 10 on the external body to be installed 2, so as to realize 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.

[0051] For example, specifically, as Figure 4 shown, the connecting part 22 includes a base 221, and the base 221 has a threaded hole 221a; the main body part 21 includes a top seat 211, the top seat 211 is arranged corresponding to at least one honeycomb hole 11a, the top seat 211 is connected to the end face of the base 221, and the circumferential side surface of the top seat 211 is arranged farther away from the hole axis of the threaded hole 221a than the circumferential side surface of the base 221 to form a stepped structure. The base 221 extends into the honeycomb hole 11a so that the stepped surface of the stepped structure abuts against the port of the honeycomb hole 11a.

[0052] Wherein, the cross-section of the base 221 in the direction perpendicular to the hole axis of the threaded hole 221a can be but is not limited to being circular, triangular, rectangular, pentagonal or hexagonal, etc. The cross-section of the top seat 211 in the direction perpendicular to the hole axis of the threaded hole 221a can be but is not limited to being circular, triangular, rectangular, pentagonal or hexagonal, etc.; it should be noted that no matter what the cross-section shape of the top seat 211 in the direction perpendicular to the hole axis of the threaded hole 221a is, the cross-section of the top seat 211 in the direction perpendicular to the hole axis of the threaded hole 221a completely covers at least the hole cross-section of one honeycomb hole 11a. The top seat 211 and the base 221 can be integrally formed by injection molding or 3D printing.

[0053] The threaded hole 221a can penetrate through the base 221 or not penetrate through the base 221. At this time, the top seat 211 is designed with a through hole corresponding to the threaded hole 221a, and the fastener 40 passes through the through hole and is threadedly connected to the threaded hole 221a to install the back plate 10 on the body to be installed 2, so as to realize the installation between the entire photovoltaic module 1 and the body to be installed 2. Of course, the top seat 211 can also be designed with a threaded hole 221a. At this time, the fastener 40 is first threadedly connected to the threaded hole 221a on the top seat 211 and then threadedly connected to the threaded hole 221a on the base 221 to install the back plate 10 on the body to be installed 2, so as to realize the installation between the entire photovoltaic module 1 and the body to be installed 2.

[0054] As Figure 5As shown in the figure, along the direction of the hole axis of the threaded hole 221a, the thickness of the base 221 is a, the thickness of the top seat 211 is b, and the depth of the honeycomb hole 11a is c, and b / (a + b) ≤ 0.2, and / or, a + b ≤ c. By reasonably designing the values of the thickness a of the base 221 and the thickness b of the top seat 211, such that b / (a + b) ≤ 0.2, most of the embedded part 20 can be inserted into the honeycomb hole 11a, enabling the adhesive layer or the welding layer to contact the hole wall of the honeycomb hole 11a as much as possible, thereby effectively enhancing the connection stability between the embedded part 20 and the hole wall of the honeycomb hole 11a. By reasonably designing the values of the thickness a of the base 221, the thickness b of the top seat 211, and the depth c of the honeycomb hole 11a, such that a + b ≤ c, the overall thickness of the photovoltaic module 1 can be reduced, and materials can also be saved.

[0055] As Figure 6 shown, the honeycomb hole 11a is a hexagonal hole, and the distance between two parallel sides of the hole cross-section of the honeycomb hole 11a is d1; the base 221 has a hexagonal cross-section perpendicular to the hole axis direction of the threaded hole 221a, and the distance between two parallel sides of the hexagonal cross-section is d2; and d1 - d2 ≤ 3 mm. Among them, the specific value of d1 - d2 can be but is not limited to 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. Preferably, d1 - d2 = 1.5 mm. By reasonably designing the distance d1 between two parallel sides of the hole cross-section of the honeycomb hole 11a and the distance d2 between two parallel sides of the hexagonal cross-section, such that d1 - d2 ≤ 3 mm, there is enough clearance reserved between the surface of the base 221 and the hole wall of the honeycomb hole 11a. On the one hand, it is convenient for the embedded part 20 to be inserted into the honeycomb hole 11a, and on the other hand, it can provide enough filling space for the adhesive layer or the welding layer to ensure the connection stability between the embedded part 20 and the hole wall of the honeycomb hole 11a.

[0056] Exemplary structures of the embedded part 20 corresponding to the connection part 22 including the base 221 and the main body part 21 including the top seat 211 can be but are not limited to the following several embodiments.

[0057] As Figure 4 shown, in the first embodiment, the embedded part 20 includes one top seat 211 and one base 221. The top seat 211 is arranged corresponding to one honeycomb hole 11a. The cross-section of the top seat 211 is hexagonal, and the cross-section of the base 221 is hexagonal.

[0058] As Figure 7As shown in the figure, in the second embodiment, the embedded part 20 includes a top seat 211 and seven bottom seats 221. The top seat 211 is arranged corresponding to the seven honeycomb holes 11a (the top seat 211 can be divided into seven small units with hexagonal cross-sections arranged in one-to-one correspondence with the seven honeycomb holes 11a). The seven bottom seats 221 are arranged in one-to-one correspondence with the seven honeycomb holes 11a and are connected to the end face of the top seat 211, and the bottom seat 221 located at the center has a threaded hole 221a.

[0059] As Figure 8 shown in the figure, in the third embodiment, the embedded part 20 includes a top seat 211 and nineteen bottom seats 221. The top seat 211 is arranged corresponding to the nineteen honeycomb holes 11a (the top seat 211 can be divided into nineteen small units with hexagonal cross-sections arranged in one-to-one correspondence with the nineteen honeycomb holes 11a). The nineteen bottom seats 221 are arranged in one-to-one correspondence with the nineteen honeycomb holes 11a and are connected to the end face of the top seat 211, and six bottom seats 221 located in the middle part have threaded holes 221a.

[0060] As Figure 9 shown in the figure, in the fourth embodiment, the embedded part 20 includes a top seat 211 and a bottom seat 221. The top seat 211 is arranged corresponding to the seven honeycomb holes 11a (the top seat 211 can be divided into seven small units with hexagonal cross-sections arranged in one-to-one correspondence with the seven honeycomb holes 11a). The bottom seat 221 is connected to the central area of the end face of the top seat 211.

[0061] For example, specifically, as Figures 10 - 13 shown in the figure, the main body part 21 includes a substrate 212. The substrate 212 is arranged corresponding to at least one honeycomb hole 11a, and the substrate 212 has a mounting hole 212a; the connecting part 22 includes a claw piece 222. The claw piece 222 is bent and connected to the edge of the substrate 212, and the claw piece 222 is connected to the hole wall of the corresponding honeycomb hole 11a.

[0062] Among them, the cross-section of the substrate 212 in the direction perpendicular to the hole axis of the mounting hole 212a can be but is not limited to being circular, triangular, rectangular, pentagonal or hexagonal, etc. The cross-section of the claw piece 222 in the direction parallel to the hole axis of the mounting hole 212a can be but is not limited to being oval-shaped, triangular, rectangular, pentagonal or hexagonal, etc. The claw piece 222 and the substrate 212 can be integrally formed by injection molding or 3D printing. As Figure 14 shown in the figure, the claw piece 222 can be located inside the hole wall of the honeycomb hole 11a above it; as Figure 15 shown in the figure, the claw piece 222 can also be located outside the hole wall of the honeycomb hole 11a above it.

[0063] As Figure 16As shown, along the direction of the hole axis of the mounting hole 212a, the thickness of the substrate 212 is e, the length of the claw piece 222 is f, and the depth of the honeycomb hole 11a is c, and e / (e + f) ≤ 0.2, and / or, e + f ≤ c. By reasonably designing the values of the thickness e of the substrate 212 and the length f of the claw piece 222, such that e / (e + f) ≤ 0.2, most of the embedded part 20 can be inserted into the honeycomb hole 11a, enabling the adhesive layer or the welding layer to contact the hole wall of the honeycomb hole 11a as much as possible, so as to effectively improve the connection stability between the embedded part 20 and the hole wall of the honeycomb hole 11a. By reasonably designing the values of the thickness e of the substrate 212, the length f of the claw piece 222, and the depth c of the honeycomb hole 11a, such that e + f ≤ c, the overall thickness of the photovoltaic module 1 can be reduced, and materials can also be saved.

[0064] As Figures 14 - 15 shown, the claw piece 222 has a first surface 222a closest to the hole axis of the mounting hole 212a and a second surface 222b farthest from the hole axis of the mounting hole 212a; along the direction perpendicular to the hole axis of the mounting hole 212a, the distance between the first surface 222a and the second surface 222b is g, and g < 1.5 mm. Among them, the specific value of g can be but is not limited to 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm or 1.5 mm, etc. Preferably, g = 0.8 mm. By reasonably designing the distance g between the first surface 222a and the second surface 222b, such that g < 1.5 mm, it is convenient for the embedded part 20 to be connected to the hole wall of the honeycomb hole 11a through the adhesive layer or the welding layer.

[0065] The exemplary structure of the embedded part 20 corresponding to the connecting part 22 including the claw piece 222 and the main body part 21 including the substrate 212 can be but is not limited to including the following several embodiments.

[0066] As Figure 13 shown, in the first embodiment, the embedded part 20 includes one substrate 212 and six claw pieces 222. The substrate 212 is provided corresponding to one honeycomb hole 11a. The cross-section of the substrate 212 is hexagonal, and the central region of the substrate 212 has a mounting hole 212a. The six claw pieces 222 are bent and connected to the six side edges of the substrate 212 one by one.

[0067] As Figure 17As shown in the figure, in the second embodiment, the embedded part 20 includes a substrate 212 and a claw piece 222. The substrate 212 is arranged corresponding to a honeycomb hole 11a. The cross-section of the substrate 212 is hexagonal. The central region of the substrate 212 has a mounting hole 212a. The claw piece 222 is arranged along the circumference of the substrate 212 for one circle.

[0068] As Figure 18 shown in the figure, in the third embodiment, the embedded part 20 includes a substrate 212 and six claw pieces 222. The substrate 212 is arranged corresponding to seven honeycomb holes 11a (the substrate 212 can be divided into seven small units with hexagonal cross-sections arranged corresponding to the seven honeycomb holes 11a one by one). The central region of the substrate 212 has a mounting hole 212a. The six claw pieces 222 are evenly distributed around the hole axis of the mounting hole 212a.

[0069] As Figure 19 shown in the figure, in the fourth embodiment, the embedded part 20 includes a substrate 212 and six claw pieces 222. The substrate 212 is arranged corresponding to nineteen honeycomb holes 11a (the substrate 212 can be divided into nineteen small units with hexagonal cross-sections arranged corresponding to the nineteen honeycomb holes 11a one by one). The central region of the substrate 212 has a mounting hole 212a. The six claw pieces 222 are evenly distributed around the hole axis of the mounting hole 212a.

[0070] As Figure 20 shown in the figure, in the fifth embodiment, the embedded part 20 includes a substrate 212, six claw pieces 222 and six support pieces 223. The substrate 212 is arranged corresponding to seven honeycomb holes 11a (the substrate 212 can be divided into seven small units with hexagonal cross-sections arranged corresponding to the seven honeycomb holes 11a one by one). The central region of the substrate 212 has a mounting hole 212a. The six claw pieces 222 are evenly distributed around the hole axis of the mounting hole 212a. The six support pieces 223 are located in the middle of the substrate 212 and are evenly distributed around the hole axis of the mounting hole 212a.

[0071] As Figure 12 , Figure 21 and Figure 22 shown in the figure, the photovoltaic module 1 further includes a blind rivet nut 30. The blind rivet nut 30 passes through the mounting hole 212a and is connected to the substrate 212 by blind riveting. The fastener 40 includes a fastening screw 41. The fastening screw 41 is connected to the blind rivet nut 30 to fix the back plate 10 to the external body to be installed 2. In this way, the fastener 40 passes through the external body to be installed 2 and is threadedly connected to the threaded hole of the blind rivet nut 30, so as to realize the connection between the photovoltaic module 1 and the external body to be installed 2, and can effectively reduce the installation difficulty of the photovoltaic module 1.

[0072] For example, the main body portion 21 may include the above-mentioned top seat 211 and the above-mentioned base plate 212, and the connecting portion 22 includes the above-mentioned base 221 and the above-mentioned claw piece 222; the fastener 40 includes a fastening screw 41. At this time, the fastening screw 41 passes through the external body 2 to be installed and is threadedly connected to the threaded hole 221a of the rivet nut 30 and / or the threaded hole 221a of the base 221, so as to realize the connection between the photovoltaic module 1 and the external body 2 to be installed, and the installation difficulty of the photovoltaic module 1 can be effectively reduced.

[0073] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification. The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An embedded part, characterized in that: Applied to a photovoltaic module, the photovoltaic module comprises a back plate, and the back plate has honeycomb holes; The embedded part is used to connect with the fastener to fix the back plate to the external body to be installed; the embedded part includes: A main body portion, arranged corresponding to at least one of the honeycomb holes; At least one connecting portion is connected to the main body, and the connecting portion is inserted into the honeycomb hole and connected to the hole wall of the honeycomb hole.

2. The embedded part according to claim 1, characterized in that: The connecting portion includes a base, and the base has a threaded hole; The main body includes a top seat, the top seat is arranged corresponding to at least one of the honeycomb holes, the top seat is connected to the end surface of the base, and the peripheral side surface of the top seat is arranged farther away from the hole axis of the threaded hole than the peripheral side surface of the base to form a step structure; Wherein, the base extends into the honeycomb hole so that the step surface of the step structure abuts against the end of the honeycomb hole.

3. The embedded part according to claim 2, characterized in that: Along the direction of the axis of the threaded hole, the thickness of the base is a, the thickness of the top seat is b, and b / (a+b)≤0.

2.

4. The embedded part according to claim 2, characterized in that: Along the direction of the axis of the threaded hole, the thickness of the base is a, the thickness of the top seat is b, the depth of the honeycomb hole is c, and a+b≤c; and / or The honeycomb hole is a hexagonal hole, the spacing between two parallel sides of the hole section of the honeycomb hole is d1, the base has a hexagonal cross section in a direction perpendicular to the hole axis of the threaded hole, the spacing between two parallel sides of the hexagonal cross section is d2, and d1-d2≤3 mm.

5. The embedded part according to claim 1, characterized in that: An adhesive layer is provided on the surface of the connecting portion, and the connecting portion is connected to the cell wall of the honeycomb cell through the adhesive layer.

6. The embedded part according to any one of claims 1 to 5, characterized in that: The main body includes a substrate, the substrate is arranged corresponding to at least one of the honeycomb holes, and the substrate has a mounting hole; The connecting portion comprises a claw piece, the claw piece is bent and connected to the edge of the base sheet, and the claw piece is connected to the hole wall of the corresponding honeycomb hole.

7. The embedded part according to claim 6, characterized in that: Along the direction of the hole axis of the mounting hole, the thickness of the base plate is e, the length of the claw plate is f, and e / (e+f)≤0.

2.

8. The embedded part according to claim 6, characterized in that: Along the direction of the hole axis of the mounting hole, the thickness of the base plate is e, the length of the claw plate is f, the depth of the honeycomb hole is c, and e+f≤c.

9. The embedded part according to claim 6, characterized in that: The claw piece has a first surface closest to the hole axis of the mounting hole, and a second surface farthest from the hole axis of the mounting hole; along the direction perpendicular to the hole axis of the mounting hole, the distance between the first surface and the second surface is g, and g is less than 1.5 mm.

10. A photovoltaic module, characterized in that: The invention comprises the embedded part as claimed in any one of claims 1 to 9.

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