Photovoltaic module and frame thereof

Abstract

The embodiment of the invention relates to the technical field of photovoltaic power generation, and particularly provides a photovoltaic module and a frame thereof, and the frame comprises a frame body which comprises a first frame part, a second frame part, and a middle frame part disposed between the first frame part and the second frame part. The first frame part is provided with an installation cavity capable of installing a solar cell of the photovoltaic module; the limiting part at least comprises a plurality of limiting structures arranged on the frame body, and at least one part of the limiting structures can form a limiting space of the photovoltaic support. Through the above structure, the photovoltaic support can be limited through the cooperation of a multi-position limiting structure. On the basis, fixation between the frame and different types of photovoltaic supports is expected to be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic power generation, and specifically provides a photovoltaic module and its frame. Background Art

[0002] In a photovoltaic power station, photovoltaic modules are arranged on photovoltaic brackets in the station. Specifically, on the one hand, a certain amount of rotation is allowed for the photovoltaic modules to ensure their performance. On the other hand, it is necessary to ensure that the photovoltaic modules can be reliably placed on the photovoltaic brackets in any rotated posture.

[0003] As the form of the frame of the photovoltaic module to be installed is relatively single, while the structural forms of the photovoltaic brackets as the installation objects are numerous and the application scenarios are relatively complex. Therefore, the frame with a relatively single structural form cannot well adapt to the structures of all photovoltaic brackets. In case of non - adaptation, coping methods such as replacing brackets, customizing brackets, adding / adjusting relevant connection structures, etc. are usually adopted, resulting in reduced installation efficiency and potential safety hazards. Therefore, it is quite necessary to develop a photovoltaic module that can adapt to photovoltaic brackets with various structural forms.

[0004] Correspondingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present application aims to solve at least a part of the above - mentioned technical problems and / or solve the above - mentioned technical problems to at least a certain extent.

[0006] In a first aspect, the present application provides a frame of a photovoltaic module, the frame including: a frame main body, which includes a first frame part, a second frame part, and an intermediate frame part disposed between the two, and an installation chamber for installing a solar cell of the photovoltaic module is formed in the first frame part; and a limiting part, which at least includes a plurality of limiting structures disposed on the frame main body, and at least a part of the plurality of limiting structures can form a limiting space for the photovoltaic bracket.

[0007] With such a structure, the limitation of the photovoltaic bracket can be realized through the cooperation of multiple - position limiting structures. On this basis, the frame main body can be reliably fixed to the photovoltaic brackets in a photovoltaic power station according to different types of photovoltaic brackets.

[0008] It can be understood that those skilled in the art can determine the number, structural form of the limiting structures and their specific positions on the frame main body according to actual needs. For example, the limiting structures can be flanges, protrusions, grooves, holes, arc structures, etc. In addition, the limiting structures can be disposed not only on the frame main body, but also on other components of the frame such as fixing parts, or the limiting structures can be separately added structures, etc.

[0009] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the photovoltaic bracket includes a component cable, and the limiting part includes: a first limiting structure, which is arranged on the bottom wall of the installation chamber; wherein, when the component cable is inserted between the first frame part and the frame part, the first limiting structure can limit the component cable.

[0010] With such a structure, the component cable in the photovoltaic bracket can be limited by the first limiting structure.

[0011] It can be understood that those skilled in the art can determine the structural form, number, etc. of the first limiting structure according to actual needs. For example, the first limiting structure includes a plurality of protrusions distributed along the circumferential direction of the component cable, a cylindrical structure that can tightly wrap a part of the component cable, etc.

[0012] It can be understood that the limitation of the component cable can be completed independently by the first limiting structure, or can be achieved through its cooperation with other structures (such as the original structure of the frame, the newly added structure on the frame, the newly introduced structure configured for the frame, etc.).

[0013] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the frame includes: a fixing part, which is detachably arranged on the frame body, the fixing part includes a first fixing structure, and the first fixing structure and the middle frame part can be connected to each other by means of fasteners. Among them, a second limiting structure is arranged on the first fixing structure, and the limiting structure and the second limiting structure can form a limiting space for the component cable.

[0014] With such a structure, the limitation of the component cable is realized through the cooperation of the fixing part and the limiting part.

[0015] It can be understood that those skilled in the art can determine the structural form, number, the detachable manner of the fixing part relative to the frame body, and the detachable position of the fixing part relative to one or several positions of the frame body according to actual needs. For example: the fixing part includes a plurality of components (taking two as an example), one of the components is detachable relative to the first frame part, and the other component is detachable relative to the second frame part; the fixing part includes one component, and the component can be detachable at different positions relative to the first frame part; etc. For example, the corresponding detachable connection method can be screw connection, snap connection, etc.

[0016] It can be understood that those skilled in the art can determine the structural form of the first fixing structure, the structural form / number of the second limiting structure arranged on it, the relative position of the first limiting structure and the second limiting structure, etc. For example, the first fixing structure can be a block structure, a plate structure, a hollow structure, etc., and the first limiting structure and the second limiting structure can be the same or different.

[0017] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the limiting part includes: a first limiting and strengthening structure, which is arranged on the bottom wall of the installation chamber, and the first limiting and strengthening structure, the second limiting structure, and the second limiting structure can form a limiting space for the component cable.

[0018] With such a configuration, the reliability of limiting the component cable can be ensured, and at the same time, the strength of the frame is ensured. Similar to the foregoing first / second limiting structures, those skilled in the art can determine the structural form, number, etc. of the first limiting and strengthening structure according to actual needs.

[0019] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the first limiting structure is a first arc-shaped structure arranged on the bottom wall of the installation chamber; and / or the second limiting structure is a second arc-shaped structure arranged on the first fixing structure; and / or the first limiting and strengthening structure is a convex structure extending downward from the bottom wall of the installation chamber.

[0020] With such a configuration, a possible structural form of the limiting part corresponding to the component cable of the photovoltaic support is given. For example, the convex structure can be a strip structure, a block structure, a hem, etc.

[0021] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the limiting part includes: a second limiting and strengthening structure, and the second frame part extends in a direction close to the first frame part with the second limiting and strengthening structure.

[0022] With such a configuration, the strength of the frame can be improved, and the limiting of the fixing part (such as the aforementioned first fixing structure cable and the second fixing structure and the pressing code assembly in the following text) can be realized.

[0023] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the photovoltaic support includes a fixed support and / or a tracking support, and the fixing part includes: a second fixing structure, which can be accommodated in the space formed by the second limiting and strengthening structure, the second frame part, and the middle frame part; wherein, the second fixing structure and the second frame part can be connected to each other by means of fasteners.

[0024] With such a configuration, the reliable connection between the frame and the fixed support and / or the tracking support can be realized through the second fixing structure.

[0025] Similar to the foregoing first fixing structure, those skilled in the art can determine the structural form, number, and the specific form of the accommodating space formed by their cooperation of the second fixing structure according to actual needs. For example, the second fixing structure can be a block structure or a plate structure.

[0026] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the second fixing structure is generally in a shape like the Chinese character 'ji', and the first side and the second side of the shape like the Chinese character 'ji' are respectively abutted against the second limiting and strengthening structure and the middle frame part.

[0027] With such a configuration, a possible structural form of the second fixing structure is given.

[0028] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the first side of the second fixing structure includes an operating end.

[0029] With such a configuration, it is convenient to take and operate the second fixing structure.

[0030] It can be understood that those skilled in the art can determine the specific form of the operating end according to actual needs. For example, a handle, a spherical protrusion, a structure that turns outwards, or only elongation can be provided on the first side.

[0031] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the photovoltaic support includes a fixed support and / or a tracking support, and the fixing part includes: a third fixing structure, the third fixing structure is a pressing code assembly, and the pressing code assembly and the photovoltaic support can be connected to each other by means of fasteners; wherein, the pressing code assembly has at least one mating side, and the mating side can be connected to the second limiting and strengthening structure in a mating manner.

[0032] With such a configuration, the reliable connection between the photovoltaic module and the photovoltaic support can be realized through the pressing code assembly.

[0033] To be adapted to the second limiting and strengthening structure, those skilled in the art can determine the specific form of the connection between the mating side and the second limiting and strengthening structure and the specific structural form of the corresponding features according to actual needs. For example, the second limiting and strengthening structure can be accommodated in the features on the mating side (or vice versa), a serrated mating, or the mating of special-shaped structures, etc.

[0034] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the frame includes a strengthening part, and the strengthening part includes: a first strengthening structure, which is arranged on the top wall of the installation chamber; and / or a second strengthening structure, the middle frame part includes a first vertical part and a second vertical part, and the second strengthening structure is located between the first vertical part and the second vertical part.

[0035] With such a configuration, the strength of the frame can be improved.

[0036] It can be understood that those skilled in the art can determine the structural form, number, etc. of the first / second strengthening structures according to actual needs. For example, the first strengthening structure can be a hem extending inward along the top wall of the installation chamber, or a plate-like structure added outside the top wall, etc. The structural form and number of the second strengthening structure can be flexibly adjusted according to the actual number of ends and positional relationship of the first vertical part and the second vertical part.

[0037] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, there are multiple frames, and corner codes are arranged between adjacent frames, wherein the corner codes can be slidably connected to the frames by means of the second limiting and strengthening structure.

[0038] With such a configuration, the installation efficiency can be improved through the second limiting and strengthening structure.

[0039] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, holes are provided on the corner codes, and protrusions capable of cooperating with the holes are provided on the middle frame part.

[0040] With such a configuration, the connection reliability between the frame and the corner code can be ensured.

[0041] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, the frame includes a frame body, and the frame body is made of carbon steel.

[0042] With such a configuration, the cost of the frame can be reduced and the strength of the frame can be improved.

[0043] In addition, since the frame itself has a conductive system, the current can be directly introduced into the ground through the connection between the frame and the photovoltaic support, without adding components related to grounding.

[0044] It can be understood that those skilled in the art can determine the specific type of carbon steel, etc. according to actual needs.

[0045] For the frame of the above-mentioned photovoltaic module, in a possible implementation manner, an anti-corrosion coating is provided on the surface of the frame body.

[0046] With such a configuration, the anti-corrosion performance of the frame can be improved.

[0047] In a second aspect, the present application provides a photovoltaic module, and the photovoltaic module includes the frame of the photovoltaic module described in any one of the foregoing items.

[0048] It can be understood that this photovoltaic module has all the technical effects of the frame of the photovoltaic module described in any one of the foregoing items, and will not be elaborated herein.

[0049] The frames of current photovoltaic modules generally use aluminum alloy materials, which results in relatively high costs for the frames. In addition, the strength of aluminum alloy is relatively low. For example, in areas with high wind pressure, high snow pressure, etc., the frames are prone to problems such as bending deformation and tearing damage. Moreover, the structural forms of the frames are relatively single. For example, the structural forms of the frames of each manufacturer are not very different, while the structures of the photovoltaic brackets that are installed in matching with the photovoltaic modules are diverse, such as tracking brackets, fixed brackets, flexible brackets, etc. And the connection forms between the photovoltaic brackets and the photovoltaic modules in the same scenario are also different. Therefore, the adaptability of the relatively single-structured frames and the photovoltaic brackets needs to be further improved. Also, currently, as a component made of aluminum alloy material, on the surface in the air, a dense oxide film will form on the frame, and the oxide film is insulating and non-conductive. Therefore, the methods for grounding the photovoltaic modules include: drilling grounding holes on the frame, and then using grounding wires in cooperation with the grounding holes to ground the entire row of photovoltaic modules; or using grounding plates made of materials such as stainless steel to pierce the oxide film on the frame to make it non-insulating and then ground the photovoltaic modules. Both methods for grounding the photovoltaic modules require adding additional grounding parts, increasing the construction workload. And due to the property of aluminum being prone to oxidation, and the subsequent formed oxide film may pose safety hazards such as lightning strikes to the photovoltaic modules. Specifically, aluminum is extremely easy to oxidize in the air, and an insulating oxide film is formed on the surface after oxidation. In the case of piercing the oxide film with a piercing gasket to make it conductive as mentioned above, if there are gaps due to poor contact of the piercing gasket, an oxide film will be generated again at the piercing part in the air, which will pose potential hazards such as lightning strikes to the photovoltaic modules.

[0050] In a preferred embodiment of the present application, the material of the frame is made of carbon steel instead of aluminum alloy. The cost (per ton price) of carbon steel is about 4 times lower than that of aluminum alloy. Moreover, the strength of high-grade carbon steel is more than doubled compared to aluminum alloy. Therefore, it can better cope with complex scenarios such as high wind pressure and high snow pressure, and thus can better protect the photovoltaic module from being damaged under more severe climatic conditions. For example, when the frame uses aluminum alloy material (such as 6005-T6), the yield strength is 215 Mpa; when using high-grade steel S450, the yield strength is above 450 Mpa; when using high-grade steel S550, the yield strength is above 550 Mpa. In addition, the frame uses thin-walled steel (such as the wall thickness is usually 0.6 - 1.3 mm). Through the special shape design of its cavity (such as the thin-walled steel can be bent arbitrarily reasonably, such as adding different bending shapes with functions of strengthening, limiting, and reinforcing, etc. (exemplarily, folding out a structure with a ribbed plate shape can reinforce it)), such as the frame can be made by processes such as cold bending, punching, and rolling. The process is relatively mature and simple, and it is not easy to produce processing defects. On the basis that the material selection can provide strength, the strength of the frame can be improved by processing bends on the thin wall. For example, for different structural forms of photovoltaic brackets, by matching corresponding-shaped connectors, it can meet the installation and matching of photovoltaic modules on different types of photovoltaic brackets. Compared with traditional photovoltaic modules, the frame of the photovoltaic module of the present application can better adapt to different structural forms of photovoltaic brackets, so that the photovoltaic module can be reliably connected to different structural forms of photovoltaic brackets. Also, in the embodiment of the present application, since the material of the frame is carbon steel, the frame itself has an electrical conduction system. In this way, the current can be directly introduced into the ground through the connection with the photovoltaic bracket, so there is no need to additionally increase devices related to grounding, reducing the types / quantity of components and improving the installation efficiency of the photovoltaic module.

[0051] In a preferred embodiment of the present application, by adding an anti-corrosion coating of materials such as zinc, aluminum, and magnesium on the surface of the frame, the anti-corrosion performance of the frame is improved, and the cut has the ability of self-repair, which can meet the anti-corrosion requirements of the photovoltaic power station. Specifically, for example, when the frame is damaged on-site, a cut will be formed on the frame. When the cut is in a humid and corrosive environment, the coating of materials such as zinc, aluminum, and magnesium near the cut can dissolve into the water film attached to the exposed metal surface and continuously migrate and impregnate to the exposed cut position, and thus form a dense protective film (white rust) including zinc hydroxide, basic zinc chloride, magnesium hydroxide, etc. The dense protective film gradually covers the exposed cut metal, and thus separates the external corrosive medium from the matrix of the exposed metal, thereby preventing the exposed cut from being further corroded. In this way, the cut that appears will self-repair over time, thus ensuring the anti-corrosion effect of the frame. Description of the Drawings

[0052] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. In the drawings:

[0053] Figure 1 Shows an assembly schematic diagram of a photovoltaic module according to an embodiment of the present application;

[0054] Figure 2 Shows a cross-sectional schematic diagram of the frame of a photovoltaic module according to an embodiment of the present application;

[0055] Figure 3 Shows a three-dimensional structural schematic diagram of the frame of a photovoltaic module according to an embodiment of the present application;

[0056] Figure 4 Is a front view schematic diagram showing the second frame of a photovoltaic module according to an embodiment of the present application;

[0057] Figure 5 Is a structural schematic diagram showing the corner fitting of a photovoltaic module according to an embodiment of the present application;

[0058] Figure 6 Is an assembly schematic diagram showing the corner fitting and the frame of a photovoltaic module according to an embodiment of the present application;

[0059] Figure 7 Is a schematic diagram showing the assembly process of the frame of a photovoltaic module according to an embodiment of the present application;

[0060] Figure 8 Shows the connection schematic of a photovoltaic module and a module cable according to an embodiment of the present application Figure 1 ;

[0061] Figure 9 Shows the connection schematic of a photovoltaic module and a module cable according to an embodiment of the present application Figure 2 ;

[0062] Figure 10 Shows the connection schematic of a photovoltaic module and a module cable according to an embodiment of the present application Figure 3 ;

[0063] Figure 11 Shows the connection schematic of a photovoltaic module and a module cable according to an embodiment of the present application Figure 4 ;

[0064] Figure 12 Shows the connection schematic of a photovoltaic module and a module cable according to an embodiment of the present application Figure 5 ;

[0065] Figure 13 Schematic diagram of the connection between a photovoltaic module and a channel purlin according to an embodiment of the present application Figure 1 ;

[0066] Figure 14 Schematic diagram of the connection between a photovoltaic module and a channel purlin according to an embodiment of the present application Figure 2 ;

[0067] Figure 15 Schematic diagram of the connection between a photovoltaic module and a channel purlin according to an embodiment of the present application Figure 3 ;

[0068] Figure 16 Schematic diagram of the connection between a photovoltaic module and a channel purlin according to an embodiment of the present application Figure 4 ;

[0069] Figure 17 Schematic diagram of the connection between a photovoltaic module and a channel purlin according to an embodiment of the present application Figure 5 ;

[0070] Figure 18 Schematic diagram of the connection between a photovoltaic module and a C-shaped steel purlin according to an embodiment of the present application Figure 1 ;

[0071] Figure 19 Schematic diagram of the connection between a photovoltaic module and a C-shaped steel purlin according to an embodiment of the present application Figure 2 ;

[0072] Figure 20 Schematic diagram of the connection between a photovoltaic module and a C-shaped steel purlin according to an embodiment of the present application Figure 3 ;

[0073] Figure 21 Schematic diagram of the connection of the pressing code assembly of a photovoltaic module according to an embodiment of the present application Figure 1 ;

[0074] Figure 22 Schematic diagram of the connection of the pressing code assembly of a photovoltaic module according to an embodiment of the present application Figure 2 ;

[0075] Figure 23 Schematic diagram of the connection of the pressing code assembly of a photovoltaic module according to an embodiment of the present application Figure 3 ;

[0076] Figure 24 Schematic diagram of the connection of the pressing code assembly of a photovoltaic module according to an embodiment of the present application Figure 4 ;

[0077] Figure 25 Schematic diagram of the connection of the pressing code assembly of a photovoltaic module according to an embodiment of the present applicationFigure 5 ;

[0078] Figure 26 Schematic connection of the pressure code assembly of a photovoltaic module showing an embodiment of the present application Figure 6 . Specific embodiments

[0079] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application.

[0080] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0081] Those skilled in the art can understand that unless specifically stated, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application means the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or coupling. The phrase "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0082] Those skilled in the art can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless defined as here.

[0083] It should be noted that in the description of the present application, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0084] In addition, it should also be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0085] In addition, to better illustrate the present application, numerous specific details are given in the following specific implementation manners. Those skilled in the art should understand that the present application can also be implemented without certain specific details. In some instances, the structures, principles, etc. of photovoltaic modules well-known to those skilled in the art are not described in detail to highlight the gist of the present application.

[0086] The following will be described with reference to Figures 1 to 26 at least a part of

[0087] Mainly with reference to Figure 1 , in a possible implementation manner, a photovoltaic module generally includes a frame 1 and solar cells 2 disposed within the frame. In this example, the structure of the frame 1 mainly includes a first frame 1100, a second frame 1200, and corner codes 1300 for splicing the long and second frames. In this example, the first frame, the second frame, and the corner codes are all made of high-grade steel materials. For example, thin-walled steel sections are made by bending and stamping processes, with mature processes, low processing costs, and high standardization of the manufactured parts. Compared with traditional aluminum alloy materials, the steel materials have lower material costs and better strength. Obviously, those skilled in the art can flexibly select the structural forms, sizes, numbers, etc. of the first / second frames and corner codes according to actual needs. For example, in this example, the first frame is longer than the second frame, so the first frame can be called the long frame and the second frame can be called the end frame.

[0088] Mainly with reference to Figures 2 to 3, in a possible implementation, the first frame 1100 includes a first frame portion a1 at the top, a second frame portion a2 at the bottom, and an intermediate frame portion a3 between the first frame portion and the second frame portion.

[0089] In a possible implementation, an installation chamber for installing the solar cell 200 is formed in the first frame portion a1. The top wall of the first frame portion (the top wall of the installation chamber) is folded inward to form a first folded edge 1101 (a first strengthening structure). The first folded edge 1101 is mainly used to increase the structural strength of the first frame portion. The bottom wall of the first frame portion extends downward to form a second folded edge 1103. For example, the second folded edge (a first limiting and strengthening structure) is generally a double folded edge extending in the vertical direction. The second folded edge 1103 is mainly used for limiting the component cable 2200, which is one of the photovoltaic brackets. At the same time, it can also strengthen the bottom wall 1104 of the first frame portion. A frame arc-shaped structure (a first limiting structure) 1105 is formed on the bottom wall 1104 of the first frame portion. The frame arc-shaped structure is mainly used for limiting the component cable 200. For example, the second folded edge 1103, the frame arc-shaped structure 1105, and the component cable buckle arc-shaped structure (a second limiting structure) 2101 described below jointly limit the component cable.

[0090] In a possible implementation, reinforcing ribs 1106 (a second strengthening structure) mainly for structural reinforcement are provided on the intermediate frame portion a3. For example, the intermediate frame portion includes two first portions distributed in the first direction (roughly the vertical direction) and an intermediate portion between the two first portions. Among them, when observed in the second direction (roughly along the horizontal direction), the two first portions are located on the right side of the intermediate portion. Each right side portion and the left side portion are connected by a section of reinforcing rib. In addition to the strengthening function, the two right side portions, the reinforcing rib, and the left side portion form an installation position corresponding to the bolt, thus ensuring the reliability of the fixation. A convex circle 1107 is machined on the side of the intermediate frame portion facing away from the installation chamber (the left side in the figure). The convex circle 1107 is fitted into the round hole 1303 of the corner code, thereby firmly connecting the frame and the corner code together.

[0091] In a possible implementation, in the second frame portion, a third folded edge 1109 (a second limiting and strengthening structure) extends in the direction close to the first frame portion (the upper side in the figure). For example, the third folded edge is generally a double folded edge extending in the vertical direction, and the third folded edge mainly plays a limiting role.

[0092] The structural forms of the cross-sections of the first / second frames are roughly the same. For example, the photovoltaic module is installed on the photovoltaic support through the first frame. Therefore, mounting holes are provided on both the side and the bottom of the first frame, while the second frame has no mounting holes. For example, side mounting holes 1110 are reserved on the middle frame part a3, and bottom mounting holes 1111 are reserved on the second frame part.

[0093] Mainly referring to Figure 5 and Figure 6 In a possible implementation manner, the corner fitting 1300 mainly includes two corner fitting parts (such as respectively denoted as the first corner fitting part b1 and the second corner fitting part b2). The structures of the two corner fitting parts are roughly the same and roughly form an L-shaped structure. Hereinafter, the first corner fitting part will be taken as an example for introduction. Obviously, the two corner fitting parts can also be different in terms of shape, size, included detailed structures, etc.

[0094] In a possible implementation manner, the first corner fitting part b1 mainly includes a corner fitting top 1302, a corner fitting bottom 1304, and a corner fitting middle part therebetween. Among them, a corner fitting flange 1301 extends upward from the side of the corner fitting bottom away from the corner fitting middle part. For example, the corner fitting flange forms a groove (hereinafter referred to as a concave circle) that is roughly semi-circular and mainly used for limiting, with the opening facing downward. A round hole 1303 is provided in the corner fitting middle part, which is mainly used for mating connection with the convex circles 1107 on the first frame and the second frame.

[0095] Mainly referring to Figure 6 and Figure 7 In a possible implementation manner, the adjacent first frame 1100 and second frame 1200 are connected through the corner fitting 1300. The inner sides of the tops of the concave circles on the two corner fitting parts (b1, b2) of the corner fitting 1300 respectively abut against the third flanges 1109 of the corresponding first / second frames, and the upper surface of the corner fitting bottom 1304 abuts against the outside of the bottom of the corresponding first / second frames. In this way, the two corner fitting parts of the corner fitting can be respectively exactly located in the lower half cavities of the first / second frames. For example, the two corner fitting parts and the corresponding first / second frames can adopt a slip-in connection. In the assembled state, the two convex circles 1107 punched out on the middle frame part can be snapped into the round holes 1303 on the corner fitting.

[0096] In a possible implementation manner, the main body part of the frame is made of carbon steel, and a protective layer of materials such as zinc, aluminum, and magnesium is added on the outside of the main body part, improving the anti-corrosion performance of the frame and protecting the photovoltaic module from being corroded by the atmosphere within the specified service life cycle.

[0097] Next, several different forms of photovoltaic supports will be combined to illustrate how the frame of the present application adapts to various forms of photovoltaic supports.

[0098] Example 1

[0099]

Component cable + Component cable buckle

[0100] Main reference Figures 8 to 12 , the component cable 2200 belongs to a steel strand with a circular cross-section. By installing two component cables on a pair of first frames of the photovoltaic module respectively, the photovoltaic module can be reliably supported. When installing the photovoltaic module on the component cable, first hang the first frame of the photovoltaic module on the corresponding side of the component cable. Refer to Figure 9 , the frame arc-shaped structure (such as a circular concave pit) 1105 and the second folded edge 1103 can limit the component cable, thus avoiding problems such as the photovoltaic module falling off the component cable. Then, the cooperation of fasteners such as bolts and the mounting holes 1110 on the first frame realizes the fixation of the component cable and the frame.

[0101] In a possible implementation, such as configuring a component cable buckle 2100 (the first fixing structure) for the component cable 2200 and the frame 1 (two frames connected by an angle code), pass the bolt through the side mounting hole 1110 on the first frame and then connect and tighten it with the component cable buckle.

[0102] In a possible implementation, the component cable buckle is a bent part (such as a steel bent part). The component cable buckle includes a main body part of the component cable buckle. The main body part of the component cable buckle is provided with a component cable buckle arc-shaped structure (such as a concave pit) 2101 at a position (upper side) close to the component cable. The function of the concave pit is to limit the position. That is, through the cooperation of the frame arc-shaped structure 1105 and the component cable buckle arc-shaped structure 2101, a component cable installation position adapted to the component cable is formed, so as to reliably press the component cable. The main body part of the component cable buckle is provided with a connection hole at a position corresponding to the side mounting hole 1110. For example, in this example, the connection hole is a component cable buckle boss 2102 with internal threads formed on the main body part of the component cable buckle by hot melt drilling (no additional nut is required). The main body part of the component cable buckle abuts against the outside of the third folded edge 1109 at a position close to the second frame part.

[0103] Figure 11 It is a schematic diagram of the frame along the long side direction after being installed on the component cable. In order to meet the installation of the component cable, the second frame of the frame has been cut flat at the position where the component cable passes through (see the 1201 in Figure 4 ). When installing the frame on the component cable, the bolt may not be tightened first to allow the frame to slide along the direction of the first frame on the component cable. In this way, the photovoltaic module can be first slid to the corresponding position by the sliding method, and then the bolt is locked to fix the photovoltaic module to the component cable, thereby improving the installation efficiency of the photovoltaic module.

[0104] Example 2

[0105]

Purlin + Purlin Buckle

[0106] Mainly referring to Figures 13 to 17 , in a possible implementation, the purlin of the tracking bracket is usually in a channel-shaped structure (such as a channel-shaped purlin 3200), and mounting holes are provided on the frame connection part on one side of the channel-shaped purlin 3200 that is connected to the frame. The position of the mounting holes is the same as the bottom positioning holes 1111 reserved on the first frame. During installation, the second frame part is placed on one side edge of the channel-shaped purlin. After aligning the hole positions, the frame is fixedly connected to the channel-shaped purlin by means of the cooperation of bolts and other fasteners with the bottom positioning holes 1111.

[0107] In a possible implementation, if a purlin buckle 3100 (the second fixing structure) is configured for the channel-shaped purlin 3200 and the frame, the bolt is passed through the bottom positioning holes 1111 on the first frame and then connected and tightened with the purlin buckle.

[0108] In a possible implementation, the purlin buckle is a bent part (such as a steel bent part). The purlin buckle includes a purlin buckle main body part, and the purlin buckle main body part is generally in a channel-shaped structure (where the channel shape mentioned here should be understood as a structure with a recess in the middle, such as having extension parts on both sides of the middle part, and having corresponding mating features on the middle part / extension parts. Among them, the two extension parts can both be vertical structures (U-shaped structures), or both be structures including vertical and horizontal parts (channel-shaped), or one can be a vertical structure and the other can be a structure including vertical and horizontal parts. In the case where both sides are structures including vertical and horizontal parts, the extension parts on both sides can be the same or different). The two sides of the channel shape are respectively abutted against the third folded edge 1109 of the second frame part and the right part on the bottom side of the middle frame part a3. Among them, the side (left side) of the two sides of the channel shape that is far from the installation chamber has an operating end 3101 compared with the other side. For example, in this example, the operating end 3101 is formed by lengthening this side (such as the vertical part) and then bending it away from the installation chamber (bending outward, such as the inclined part) to facilitate taking the purlin buckle in and out of the frame. Similar to the aforementioned component cable buckle, the purlin buckle main body part is provided with connection holes at positions corresponding to the bottom mounting holes 1111. For example, in this example, the connection hole is a purlin buckle boss 3102 with internal threads formed on the purlin buckle main body part by hot melt drilling.

[0109] When installing the purlin buckle onto the first frame, find the installation position of the purlin buckle through the bottom mounting holes of the first frame. Press the short side of the purlin buckle against the middle frame part of the first frame, and then press the inclined part of the operating end 3101 to easily press the purlin buckle into the first frame. When it is necessary to remove / dismantle the purlin buckle from the first frame, just pull the inclined part of the operating end 3101. Refer to Figure 15 , by snapping the purlin buckle into the first frame of the photovoltaic module, in addition to the connection function, it also reinforces the local connection nodes of the first frame of the photovoltaic module, reducing the risk of the first frame being torn due to stress at the connection nodes. Figure 16 is a view of installing the frame on the U-shaped purlin along the long side direction of the module. For example, the middle purlin is processed with mounting holes on both sides of the U-shape, and the purlins on both sides are only processed with mounting holes on one side of the U-shape. When installing the photovoltaic module 200 on the U-shaped purlin 3200 of the tracking bracket, the direction of the U-shaped purlin is the same as that of the first frame (see Figure 17 ).

[0110] Embodiment 3

[0111]

Purlin + Purlin Buckle

[0112] Mainly refer to Figures 18 to 20 , different from the tracking bracket, the purlins of the fixed bracket are generally in the same direction as the short side of the frame, and the purlins are usually C-shaped purlins 3300. When the bracket is a fixed bracket, install holes are opened on the upper side of the C-shaped purlin. Pass the bolt through the installation hole on the upper side of the C-shaped purlin and the bottom installation hole 1111 of the first frame, and cooperate with the purlin buckle to lock the bolt. Others are similar to the aforementioned U-shaped purlins and will not be elaborated here.

[0113] Embodiment 4

[0114]

Purlin + Clamping Component

[0115] Mainly refer to Figures 21 to 26, in a possible implementation, taking the purlin of the fixed bracket (the label still uses the C-shaped purlin 3300 in Embodiment 3) as an example, the photovoltaic module 200 is installed on the C-shaped purlin 3300 through the pressing code assembly 4100 (the third fixing structure). The pressing code assembly 4100 includes a pressing code main body part, and the pressing code main body part has at least one mating side. For example, the pressing code assembly can have two structural forms: side pressing code (only one side mates with the first frame, similar to removing a horizontal part from a several-character-shaped structure) and middle pressing code (both sides mate with the first frame, roughly a several-character-shaped structure). In this example, the pressing code is a bent part (such as a steel bent part). Taking the middle pressing code as an example, in the pressing code main body part that is roughly in a several-character-shaped structure, the mating sides 4101 on both sides respectively abut against the second frame parts of the corresponding frames. Among them, a pressing code fold 4102 that matches the third fold 1109 on the second frame part is formed on the mating side 4101. For example, being adapted to the double fold, the pressing code fold is a groove-shaped structure that can accommodate the double fold. Installation holes are provided on the pressing code main body part. In this way, the fixed connection between the C-shaped purlin 3300 and the frame can be realized by means of the cooperation of fasteners such as bolts and the pressing code assembly.

[0116] In a possible implementation, after the bolt passes through the installation holes on the C-shaped purlin 3300 and the pressing code assembly 4100, the photovoltaic module including the frame 1 can be pressed tightly on the C-shaped purlin by cooperating with a nut.

[0117] For example, in this example, the two side pressing codes respectively press tightly on a pair of side edges of the left and right photovoltaic modules away from each other, and the two mating sides of a middle pressing code respectively press tightly on a pair of side edges of the left and right photovoltaic modules close to each other. By configuring the pressing code assembly, the installation of the photovoltaic module and the purlin can be completed without reserving bottom installation holes on the frame. In addition, the installation position of the pressing code assembly can be freely adjusted along the direction of the first frame. Therefore, the construction is more flexible and convenient.

[0118] It can be seen that in the preferred implementation of the application, the frame is made of carbon steel material, which reduces the cost while improving the strength of the frame. For example, it is especially suitable for complex scenarios such as high wind pressure and high snow pressure. By setting the frame as a special structure including multiple functions such as limiting, installing, reinforcing, and connecting, the frame can be matched with various photovoltaic brackets, thus improving the adaptability between the photovoltaic module and the photovoltaic bracket. Since the steel material itself can conduct electricity, the photovoltaic module and the photovoltaic bracket are directly and tightly connected by fasteners such as bolts, and the photovoltaic module can conduct lightning to the ground through the photovoltaic bracket without adding additional lightning protection and grounding components, reducing the lightning strike hidden danger of the photovoltaic module. In addition, by adding an anti-corrosion coating on the surface of the frame, the cut of the frame has self-healing ability, so that the frame meets the anti-corrosion requirements of the photovoltaic power station.

[0119] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A frame of a photovoltaic module, characterized in that: The frame includes: A frame body, comprising a first frame portion, a second frame portion and an intermediate frame portion disposed therebetween, wherein the first frame portion is formed with an installation cavity capable of installing a solar cell of a photovoltaic module; and The limiting portion at least includes a plurality of limiting structures arranged on the frame body, and at least a part of the plurality of limiting structures can form a limiting space of the photovoltaic bracket.

2. The frame according to claim 1, characterized in that: The photovoltaic support comprises a component cable, The limiting part comprises: A first limiting structure, which is arranged on the bottom wall of the installation chamber; Wherein, when the component cable is inserted between the first frame part and the frame part, the first limiting structure can limit the component cable.

3. The frame according to claim 2, characterized in that: The frame includes: A fixing part is detachably arranged on the frame body, and the fixing part includes: a first fixing structure, wherein the first fixing structure and the middle frame portion can be connected to each other by means of a fastener; Wherein, a second limiting structure is arranged on the first fixing structure, and the limiting structure and the second limiting structure can form a limiting space for the component cable.

4. The frame according to claim 3, characterized in that: The limiting part comprises: The first limiting reinforcement structure is arranged on the bottom wall of the installation chamber, and the first limiting reinforcement structure, the second limiting structure and the second limiting structure can form a limiting space for the component cable.

5. The frame according to claim 4, characterized in that: The first limiting structure is a first arc-shaped structure arranged on the bottom wall of the installation chamber; and / or The second limiting structure is a second arc-shaped structure arranged on the first fixing structure; and / or The first position limiting reinforcement structure is a protruding structure extending downward from the bottom wall of the installation chamber.

6. The frame according to any one of claims 3 to 5, characterized in that: The limiting part comprises: A second position limiting reinforcement structure is provided, wherein the second frame portion is extended along a direction close to the first frame portion.

7. The frame according to claim 6, characterized in that: The photovoltaic support includes a fixed support and / or a tracking support. The fixing portion comprises: A second fixing structure capable of being accommodated in a space formed by the second position-limiting reinforcement structure, the second frame portion and the middle frame portion; Wherein, the second fixing structure and the second frame portion can be connected to each other by means of fasteners.

8. The frame according to claim 7, characterized in that: The second fixing structure is substantially an “X”-shaped structure, and a first side and a second side of the “X”-shaped structure are respectively abutted against the second position limiting reinforcement structure and the middle frame portion.

9. The frame according to claim 8, characterized in that: The first side of the second fixing structure includes an operating end.

10. The frame according to claim 6, characterized in that: The photovoltaic support includes a fixed support and / or a tracking support. The fixing portion comprises: A third fixing structure, wherein the third fixing structure is a code pressing component, and the code pressing component and the photovoltaic bracket can be connected to each other by means of a fastener; Wherein, the code pressing component has at least one mating side, and the mating side can be matingly connected with the second limiting reinforcement structure.

11. The frame according to claim 1, characterized in that: The frame includes a reinforcement portion, and the reinforcement portion includes: a first reinforcement structure disposed on a top wall of the installation chamber; and / or A second reinforcing structure, the middle frame portion includes a first vertical portion and a second vertical portion, and the second reinforcing structure is located between the first vertical portion and the second vertical portion.

12. The frame according to claim 6, characterized in that: The frame includes a plurality of frames, and angle codes are arranged between adjacent frames. Wherein, the corner bracket can be slidably connected to the frame by means of the second limiting reinforcement structure.

13. The frame according to claim 12, characterized in that: The corner code is provided with a hole, and the middle frame portion is provided with a protrusion that can cooperate with the hole.

14. The frame according to claim 11, characterized in that: The frame includes a frame body, and the frame body is made of carbon steel.

15. The frame according to claim 14, characterized in that: The surface of the frame body is provided with an anti-corrosion coating.

16. A photovoltaic module, characterized in that: The photovoltaic assembly comprises the frame of the photovoltaic assembly according to any one of claims 1 to 15.

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