Corner connector and photovoltaic module

Abstract

The utility model discloses a corner connector, and belongs to the technical field of photovoltaic modules. Comprising an inner end part and an outer end part which are oppositely arranged; one end of the first matching part is connected with one side of the gap part, and the other end of the first matching part extends in the first direction; one end of the second matching part is connected with the other side of the gap part, the other end of the second matching part extends in the second direction, and the first direction is perpendicular to the second direction; the inner end part is arranged in a space defined by the first matching part and the second matching part; the limiting protruding part is located in the defined space, and the limiting protruding part is composed of the inner end part and a protrusion, or the limiting protruding part is protruded through the first matching part and / or the second matching part. In the embodiment of the invention, the spacing lug bosses are arranged to enable the two adjacent frames to have an interval, sewage can flow away from the interval, and the photovoltaic module has the beneficial effects that accumulated water is prevented from remaining at the joints of the frames and the laminated pieces, so that the working efficiency and the service life of the photovoltaic module are prevented from being influenced.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic module technology, specifically relating to a corner code and a photovoltaic module. Background Technology

[0002] The aluminum alloy frame used for external structural support of photovoltaic modules is called the photovoltaic frame, which consists of a rectangular frame composed of two long and two short sections. Existing photovoltaic frames can be basically divided into four sides: side A, side B, side C, and side D. Side A serves to limit the top of the laminated components; sides B and D are mainly used to ensure the rigidity of the frame and the overall strength of the photovoltaic module; side C prevents the frame from twisting under stress and serves as the fastener installation connection surface.

[0003] However, the A-side of a conventional photovoltaic frame is 2-3 mm higher than the laminate, and adjacent frames are connected by corner brackets. When the module is used outdoors, dust will accumulate around it. Even if it rains or the photovoltaic module surface is cleaned and maintained, the wastewater will flow to the lower end of the photovoltaic module, but some water will always be unable to cross the frame. After the water dries in the sun or wind, the dust will condense on the glass surface, forming mud strips over time. The laminate that is shaded cannot generate electricity and forms hot spots, thereby reducing the power generation of the photovoltaic power station, accelerating the aging of the photovoltaic module, and affecting the lifespan of the photovoltaic module.

[0004] Therefore, it is necessary to propose a corner code to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this application is to provide a corner code and a photovoltaic module that can at least solve some of the problems mentioned above.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] In a first aspect, this application provides a corner bracket, comprising: a gap portion, the gap portion including an inner end portion and an outer end portion disposed opposite to each other; a first mating portion, one end of the first mating portion being connected to one side of the gap portion, and the other end of the first mating portion extending along a first direction; a second mating portion, one end of the second mating portion being connected to the other side of the gap portion, and the other end of the second mating portion extending along a second direction, the first direction and the second direction being perpendicular; wherein, the inner end portion is disposed in the space enclosed by the first mating portion and the second mating portion; a limiting protrusion portion located in the enclosed space; the limiting protrusion portion protrudes from the inner end portion, or, the limiting protrusion portion protrudes from the first mating portion and / or the second mating portion.

[0008] In this embodiment of the application, by setting a limiting protrusion to create a gap between two adjacent frames, when it rains or when the surface of the photovoltaic module is cleaned and maintained, the sewage will flow away from the gap between the two adjacent frames. This has the beneficial effect of preventing water from accumulating at the connection between the frame and the laminate, which would affect the working efficiency and service life of the photovoltaic module.

[0009] Optionally, in an embodiment of this application, the gap portion includes a first side portion and a second side portion, wherein the first side portion is connected to the first mating portion, and the second side portion is connected to the second mating portion;

[0010] The first side portion and the second side portion are both connected to the outer end portion and form an included angle.

[0011] Optionally, in the embodiments of this application, the included angle is α, wherein 20°≤α≤40°.

[0012] Optionally, in an embodiment of this application, the included angle is β, where β = 0°, and the first side and the second side are parallel to each other.

[0013] Optionally, in this embodiment of the application, the width of the first mating part along the second direction is L1, and the width of the second mating part along the first direction is L2, wherein L1 = L2, or L1 > L2, or L1 < L2.

[0014] Optionally, in this embodiment of the application, the corner code further includes a first anti-slip structure and a second anti-slip structure; the first anti-slip structure is disposed on at least one of the two sides of the first mating part that are disposed opposite to each other along the second direction; the second anti-slip structure is disposed on at least one of the two sides of the second mating part that are disposed opposite to each other along the first direction.

[0015] Optionally, in an embodiment of this application, the outer end portion protrudes from the first mating portion and / or the second mating portion in a direction away from the limiting protrusion.

[0016] Optionally, in an embodiment of this application, the gap portion is provided with a through hole along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0017] Optionally, in this embodiment, the surface of the outer end is an arc surface.

[0018] Optionally, in this embodiment of the application, the limiting protrusion forms limiting grooves with the first mating portion and the second mating portion, respectively.

[0019] Secondly, a photovoltaic module is also provided, comprising: a laminate; a corner bracket as described above; a photovoltaic frame, the photovoltaic frame comprising a plurality of sequentially connected frames, two adjacent frames being connected by the corner bracket; a first mating part and a second mating part being respectively inserted into adjacent frames, and a limiting protrusion limiting the end of the frame.

[0020] Optionally, in this embodiment, the limiting protrusion forms a limiting groove with the first mating part and / or the second mating part.

[0021] One end of the frame near the gap is engaged with the limiting groove.

[0022] Optionally, in this embodiment, the ends of two adjacent frames do not contact each other, and the ends of two adjacent frames are separated by the limiting protrusion and the outer end, respectively.

[0023] Optionally, in this embodiment of the application, at least one of the two adjacent borders is a border without an A-side. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a corner bracket in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of a corner bracket with different thicknesses in the first and second mating parts according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the connection structure between a corner bracket and a photovoltaic side frame in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of another type of corner bracket in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram of another corner bracket structure with different thicknesses in the first and second mating parts of this application embodiment;

[0029] Figure 6 This is a schematic diagram of another connection structure between the corner bracket and the photovoltaic side frame in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Gap portion; 11. Inner end portion; 12. Outer end portion; 13. First side portion; 14. Second side portion; 15. Through hole; 20. First mating portion; 30. Second mating portion; 40. Limiting protrusion; 41. Limiting groove; 50. First anti-slip structure; 51. First anti-slip tooth; 60. Second anti-slip structure; 61. Second anti-slip tooth. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] The corner code and photovoltaic module provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0035] See Figures 1 to 6 An embodiment of this application provides a corner code, including: a gap portion 10, the gap portion 10 including an inner end portion 11 and an outer end portion 12 disposed opposite to each other; a first mating portion 20, one end of the first mating portion 20 being connected to one side of the gap portion 10, and the other end of the first mating portion 20 extending along a first direction; a second mating portion 30, one end of the second mating portion 30 being connected to the other side of the gap portion 10, and the other end of the second mating portion 30 extending along a second direction, the first direction and the second direction being perpendicular; wherein, the inner end portion 11 is disposed in the space enclosed by the first mating portion 20 and the second mating portion 30; a limiting protrusion 40, located in the enclosed space; the limiting protrusion 40 protrudes from the inner end portion 11, or the limiting protrusion 40 protrudes from the first mating portion 20 and / or the second mating portion 30.

[0036] In this embodiment of the application, one end of the first mating part 20 is connected to one side of the gap part 10, and the other end of the first mating part 20 is along a first direction (e.g., Figure 1 Extending in the vertical direction. For example, in Figure 1 In the example, one end of the first mating part 20 is the lower end of the first mating part 20, and the other end of the first mating part 20 is the upper end of the first mating part 20. The lower end of the first mating part 20 is connected to the gap part 10.

[0037] One end of the second mating part 30 is connected to the other side of the main body, and the other end of the second mating part 30 is along the second direction (e.g., Figure 1 Extending in the left and right directions, the first and second directions are perpendicular. For example, in Figure 1 In the example, one end of the second mating part 30 is the left end of the second mating part 30, and the other end is the right end of the second mating part 30. The left end of the second mating part 30 is connected to the gap part 10. According to the above arrangement, the plane containing the first mating part 20 and the plane containing the second mating part 30 are perpendicular to each other. When corner brackets are used to connect two adjacent frames in a photovoltaic frame into a whole, the first mating part 20 can fit into the receiving cavity of one frame, and the second mating part 30 can fit into the receiving cavity of the other frame, thus achieving the connection of the two adjacent frames. Therefore, the assembly operation of the frame and corner brackets is simple, and the assembly efficiency of the frame can be improved.

[0038] Furthermore, the limiting protrusion 40 can protrude from the inner end portion 11, the limiting protrusion 40 can protrude from the first mating portion 20, the limiting protrusion 40 can protrude from the second mating portion 30, or the limiting protrusion 40 can protrude from both the first mating portion 20 and the second mating portion 30. In practical applications, if the limiting protrusion 40 is configured in any of the above ways, a gap can be formed between two adjacent frame parts after they are installed on the corner bracket, thereby preventing dust accumulation between the two adjacent frame parts.

[0039] In this embodiment of the application, by setting the limiting protrusion 40 to make a gap between two adjacent frames, when it rains or when the surface of the photovoltaic module is cleaned and maintained, the sewage will flow away from the gap between the two adjacent frames, which has the beneficial effect of preventing water from accumulating at the connection between the frame and the laminate, thus affecting the working efficiency and service life of the photovoltaic module.

[0040] It should be noted that the shape of the limiting protrusion 40 can be triangular, trapezoidal or rectangular, with triangular and trapezoidal shapes being preferred, depending on the actual situation. This embodiment does not make specific limitations on this.

[0041] It should also be noted that the thickness of the first mating part 20 and the thickness of the second mating part 30 can be the same or different, depending on the actual situation. This embodiment does not impose any limitations on this.

[0042] Optionally, in an embodiment of this application, the gap portion 10 includes a first side portion 13 and a second side portion 14. The first side portion 13 is connected to the first mating portion 20, and the second side portion 14 is connected to the second mating portion 30. The first side portion 13 and the second side portion 14 are both connected to the outer end portion 12 and form an included angle.

[0043] In this embodiment, the first side portion 13 is configured to connect to the first mating portion 20, and the second side portion 14 is configured to connect to the second mating portion 30. Furthermore, when two adjacent frame sides are connected to the corner bracket, the two adjacent frame sides can respectively abut against the first side portion 13 and the second side portion 14. Further, both the first side portion 13 and the second side portion 14 are connected to the outer end portion 12 and form an included angle. That is, there is a gap between the two adjacent frame sides due to the included angle. When it rains or the photovoltaic module surface is cleaned and maintained, wastewater will flow away from the gap between the two adjacent frame sides connected to the first side portion 13 and the second side portion 14, respectively. This has the beneficial effect of preventing water accumulation at the connection between the frame and the laminate, thus avoiding impact on the working efficiency and service life of the photovoltaic module.

[0044] Optionally, in the embodiments of this application, the included angle is α, where 20°≤α≤40°.

[0045] In this embodiment, when the included angle is 20°≤α≤40°, the chamfer of the two adjacent frames that cooperate with the corner code is no longer limited to the traditional 45° chamfer, but can be a chamfer with an actual angle of 45°+0.5α. In this embodiment, by limiting the included angle to 20°≤α≤40°, more photovoltaic frames with different chamfer angles can be matched, which has the beneficial effect of facilitating interface changes and optimization of photovoltaic frames.

[0046] Optionally, in an embodiment of this application, the included angle is β, where β = 0°, and the first side portion 13 and the second side portion 14 are parallel to each other.

[0047] In this embodiment, when the included angle is 0°, the chamfer of the two adjacent frame edges that cooperate with the corner bracket can be a traditional 45° chamfer. In this embodiment, through the above setting, it is possible to match the frame of a traditional photovoltaic module with a 45° chamfer, which has the beneficial effect of facilitating matching with the frame of a traditional photovoltaic module.

[0048] Optionally, in the embodiments of this application, the width of the first mating part 20 along the second direction is L1, and the width of the second mating part 30 along the first direction is L2, wherein L1 = L2, or L1 > L2, or L1 < L2.

[0049] In this embodiment, the different thicknesses of the first mating part 20 and the second mating part 30 allow the same corner code to match the first side 13 frame and the second side 14 frame with different cavity thicknesses. In this embodiment, through the above setting, more first side 13 frames and second side 14 frames with different cavity thicknesses can be matched, which has the beneficial effect of improving the matching range of the corner code and facilitating the interface modification and optimization of the first side 13 frame and the second side 14 frame.

[0050] Optionally, in this embodiment of the application, the corner code further includes a first anti-slip structure 50 and a second anti-slip structure 60; the first anti-slip structure 50 is disposed on at least one of the two sides of the first mating part 20 that are disposed opposite to each other along the second direction; the second anti-slip structure 60 is disposed on at least one of the two sides of the second mating part 30 that are disposed opposite to each other along the first direction.

[0051] In the embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first anti-slip structure 50 can be provided on the right side of the first mating part 20. With this arrangement, the right side of the first mating part 20 can play an anti-slip role, while the left side of the first mating part 20 can fully contact the inner wall of the receiving cavity of the frame, which is conducive to the interference fit between the first mating part 20 and the receiving cavity of the frame, thereby reducing the probability of the first mating part 20 falling off the frame.

[0052] Correspondingly, the first anti-slip structure 50 can also be set on the left side of the first mating part 20. The mating connection between the first anti-slip structure 50 and the frame is similar to that of the first anti-slip structure 50 set on the right side of the first mating part 20, and will not be described again here.

[0053] Furthermore, the first anti-slip structure 50 can also be provided on the right side and the left side of the first mating part 20 to enhance the friction between the first mating part 20 and the frame, thereby reducing the probability of the first mating part 20 falling off the frame.

[0054] Furthermore, the second anti-slip structure 60 is provided on the top surface of the second mating part 30. With this arrangement, the top surface of the second mating part 30 can play an anti-slip role, and the bottom surface of the second mating part 30 can fully contact the inner wall of the receiving cavity of the frame, which is conducive to the interference fit between the second mating part 30 and the receiving cavity of the second side frame 14, thereby reducing the probability of the second mating part 30 falling off the frame.

[0055] Correspondingly, the second anti-slip structure 60 can also be provided on the bottom surface of the second mating part 30. The mating connection between the second anti-slip structure 60 and the frame is similar to that of the second anti-slip structure 60 being provided on the bottom surface of the second mating part 30, and will not be described in detail here.

[0056] Furthermore, the second anti-slip structure 60 can also be provided on the top surface of the second mating part 30 and the bottom surface of the second mating part 30 to enhance the friction between the second mating part 30 and the frame, thereby reducing the probability of the second mating part 30 falling off the frame.

[0057] Therefore, the corner brackets are less likely to fall off the photovoltaic frame, allowing them to remain connected for extended periods and ensuring the normal operation of the photovoltaic modules. Furthermore, the assembly of the corner brackets to the photovoltaic frame is simple.

[0058] Furthermore, the first anti-slip structure 50 includes a plurality of first anti-slip teeth 51 arranged along a first direction, and the second anti-slip structure 60 includes a plurality of second anti-slip teeth 61 arranged along a second direction. The plurality of first anti-slip teeth 51 protrude from the first mating portion 20 in a direction away from the first mating portion 20, and the first anti-slip teeth 51 are inclined towards the second mating portion 30. Therefore, the inner wall of the receiving cavity of the first side portion 13 frame adjacent to the first anti-slip teeth 51 provides significant resistance to the first anti-slip teeth 51, strengthening the connection between the first mating portion 20 and the frame, allowing for a tighter connection. Simultaneously, the inner wall of the receiving cavity of the frame adjacent to the first anti-slip teeth 51 also provides significant resistance to the first anti-slip teeth 51, thus further strengthening the connection between the corner bracket and the frame.

[0059] Furthermore, multiple second anti-slip teeth 61 protrude from the second mating portion 30 in a direction away from the second mating portion 30, and the first anti-slip teeth 51 are inclined towards the second mating portion 30. Therefore, the inner wall of the receiving cavity of the frame adjacent to the second anti-slip teeth 61 provides significant resistance to the second anti-slip teeth 61, strengthening the connection between the second mating portion 30 and the frame, allowing for a tighter connection. Simultaneously, the inner wall of the receiving cavity of the frame adjacent to the second anti-slip teeth 61 also provides significant resistance to the second anti-slip teeth 61, thus further securing the connection between the corner bracket and the frame.

[0060] Furthermore, the first anti-slip tooth 51 and the second anti-slip tooth 61 have simple structures and are easy to process, which can effectively improve the production efficiency of corner codes. It should be noted that the number of the first anti-slip tooth 51 and the second anti-slip tooth 61, as well as their tilt angle, can be specifically set according to actual conditions to better meet practical applications. This embodiment does not limit this.

[0061] Optionally, in the embodiments of this application, the outer end portion 12 protrudes from the first mating portion 20 and / or the second mating portion 30 in a direction away from the limiting protrusion 40.

[0062] In this embodiment, the outer end portion 12 may protrude beyond the first mating portion 20, the second mating portion 30, and both the first and second mating portions 20 and 30. The outer end portion 12 protruding in a direction away from the limiting protrusion 40 provides space for assembling the photovoltaic frame and also provides a smoother outer surface after the photovoltaic frame and corner bracket are assembled.

[0063] Optionally, in this embodiment of the application, the gap portion 10 is provided with a through hole 15 along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0064] In this embodiment, the through hole 15 is provided to better facilitate the outflow of sewage. In practical applications, when it rains or when the surface of the photovoltaic module is cleaned and maintained, sewage will flow away from the gap between the first side frame 13 and the second side frame 14. It can be understood that the sewage flows to the gap and then flows out of the corner bracket with the through hole 15, which has the beneficial effect of accelerating the outflow of sewage and avoiding water accumulation at the corner bracket.

[0065] Optionally, in this embodiment, the surface of the outer end portion 12 is an arc surface.

[0066] In this embodiment, the curved surface of the outer end 12 makes it rounded and safe to handle, which improves the design of corner brackets with sharp corners and has the beneficial effect of avoiding injury to workers when using the corner brackets.

[0067] Optionally, in the embodiments of this application, the limiting protrusion 40 forms a limiting groove 41 with the first mating part 20 and the second mating part 30 respectively.

[0068] Furthermore, the first mating part 20 and the second mating part 30 enclose a space, wherein the inner end part 11 is disposed within the space, and correspondingly, the outer end part 12, which is disposed opposite to the inner end part 11, is disposed outside the space. The limiting protrusion 40 is connected to the inner end part 11, and the limiting protrusion 40 protrudes from the first mating part 20 and the second mating part 30. The limiting protrusion 40 protruding from the first mating part 20 and the second mating part 30 respectively forms a limiting groove 41 with the first mating part 20 and the second mating part 30. The limiting groove 41 is provided to limit the photovoltaic frame.

[0069] Optionally, in this embodiment of the application, it includes: a laminate; a corner bracket as described above; a photovoltaic frame, the photovoltaic frame including a plurality of frames connected in sequence, two adjacent frames being connected by a corner bracket; the first mating part 20 and the second mating part 30 being inserted into the adjacent frames respectively, and the limiting protrusion 40 limiting the end of the frame.

[0070] In this embodiment, by setting the corner bracket as described above, there is a gap between adjacent frames after they are connected to the corner bracket. This allows wastewater to flow away through the gap between adjacent frames during rain or cleaning / maintenance of the photovoltaic module surface, preventing water accumulation at the connection between the frame and the laminate, which could affect the photovoltaic module's efficiency and lifespan. Furthermore, the limiting protrusion 40 can also be used to limit the ends of the frame, preventing the frame from detaching from the corner bracket.

[0071] Optionally, in the embodiments of this application, the limiting protrusion 40 forms a limiting groove 41 with the first mating part 20 and / or the second mating part 30.

[0072] In this embodiment of the application, two adjacent frames are respectively engaged with the first mating part 20 and the second mating part 30. During assembly, the end of any frame near the gap part 10 is engaged with the limiting groove 41. It can be understood that by setting the limiting protrusion 40 to form the limiting groove 41, the frame is limited so as to realize the reserved gap between two adjacent frames, thereby allowing sewage to flow away from the gap. This has the beneficial effect of avoiding water accumulation in the photovoltaic module, which would affect the working efficiency and service life of the photovoltaic module.

[0073] Optionally, in this embodiment, the ends of two adjacent frame sides do not contact each other, and the ends of two adjacent frame sides are separated by the limiting protrusion 40 and the outer end 12, respectively.

[0074] Furthermore, at least one of the two adjacent borders is a border without side A.

[0075] In this embodiment, when the frame and corner bracket are assembled, one side of the frame abuts against the limiting protrusion 40, and the other side of the frame abuts against the outer end portion 12. That is, both sides of the frame abut against different positions of the corner bracket. It can be understood that adjacent frames abut against both the limiting protrusion 40 and the outer end portion 12, which separate the adjacent frames, allowing wastewater to flow away through the gap. This has the beneficial effect of preventing water accumulation on the photovoltaic module, thus avoiding impact on the photovoltaic module's working efficiency and lifespan.

[0076] Furthermore, in the photovoltaic module of this application, one of two adjacent frames can be a frame without an A-side, or both adjacent frames can be frames without an A-side. A-side-less frames can also be assembled with corner brackets, and wastewater can still flow away from the gaps, effectively preventing water accumulation in the photovoltaic module and thus avoiding impacts on its efficiency and lifespan. Simultaneously, the absence of an A-side frame also prevents water accumulation inside the frame, further preventing water buildup in the photovoltaic module and its impact on its efficiency and lifespan.

[0077] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0078] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A corner code, characterized in that, include: The gap (10) includes an inner end (11) and an outer end (12) disposed opposite to each other; The first mating part (20) has one end connected to one side of the gap part (10) and the other end of the first mating part (20) extends along the first direction. The second mating part (30) has one end connected to the other side of the gap part (10), and the other end of the second mating part (30) extends along the second direction, which is perpendicular to the first direction and the second direction. The inner end portion (11) is disposed in the space enclosed by the first mating portion (20) and the second mating portion (30); The limiting protrusion (40) is located in the enclosed space; The limiting protrusion (40) protrudes from the inner end (11), or the limiting protrusion (40) protrudes from the first mating part (20) and / or the second mating part (30).

2. The corner code according to claim 1, characterized in that, The gap portion (10) includes a first side portion (13) and a second side portion (14), the first side portion (13) being connected to the first mating portion (20), and the second side portion (14) being connected to the second mating portion (30); The first side portion (13) and the second side portion (14) are both connected to the outer end portion (12) and form an included angle.

3. The corner code according to claim 2, characterized in that, The included angle is α, where 20°≤α≤40°.

4. The corner code according to claim 2, characterized in that, The included angle is β, where β = 0°, and the first side (13) and the second side (14) are parallel to each other.

5. The corner code according to any one of claims 1-4, characterized in that, The width of the first mating part (20) along the second direction is L1, and the width of the second mating part (30) along the first direction is L2, wherein L1 = L2, or L1 > L2, or L1 < L2.

6. The corner code according to any one of claims 1-4, characterized in that, The corner code also includes a first anti-slip structure (50) and a second anti-slip structure (60); The first anti-slip structure (50) is disposed on at least one of the two sides of the first mating part (20) that are disposed opposite to each other along the second direction; The second anti-slip structure (60) is disposed on at least one of the two sides of the second mating part (30) that are disposed opposite to each other along the first direction.

7. The corner code according to any one of claims 1-4, characterized in that, The outer end portion (12) protrudes from the first mating portion (20) and / or the second mating portion (30) in a direction away from the limiting protrusion (40).

8. The corner code according to claim 1, characterized in that, The gap portion (10) has a through hole (15) along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

9. The corner code according to claim 1, characterized in that, The surface of the outer end (12) is an arc surface.

10. The corner code according to claim 1, characterized in that, The limiting protrusion (40) forms a limiting groove (41) with the first mating part (20) and the second mating part (30) respectively.

11. A photovoltaic module, characterized in that, include: Laminated components; Corner code as described in any one of claims 1 to 10; A photovoltaic frame, comprising multiple frames connected in sequence, with adjacent frames connected by the corner bracket; The first mating part (20) and the second mating part (30) are respectively inserted into the adjacent frame, and the limiting protrusion (40) limits the end of the frame.

12. The photovoltaic module according to claim 11, characterized in that, The limiting protrusion (40) forms a limiting groove (41) with the first mating part (20) and / or the second mating part (30), and one end of the frame near the gap part (10) is engaged in the limiting groove (41).

13. The photovoltaic module according to claim 11, characterized in that, The ends of two adjacent frames do not contact each other, and the ends of two adjacent frames are separated by the limiting protrusion (40) and the outer end (12), respectively.

14. The photovoltaic module according to claim 11, characterized in that, At least one of the two adjacent borders is a border without side A.

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