Corner connector for photovoltaic frame, photovoltaic frame and photovoltaic module

Abstract

The utility model relates to the technical field of photovoltaic frames, and discloses a corner connector for a photovoltaic frame, the photovoltaic frame and a photovoltaic assembly. The corner connector comprises a bottom wall and a side wall. The side walls comprise a first side wall and a second side wall which are connected through a corner so as to be respectively inserted into the corner connector mounting cavities of the two photovoltaic frame strips adjacent to the corner; one side edge adjacent to the corner of the bottom wall is in bent connection with the first side wall, and the other side edge adjacent to the corner of the bottom wall is in bent connection with the second side wall; the outer edge of the side wall and / or the bottom wall is provided with a tooth-shaped structure used for being inserted and installed in a corner connector installation cavity. The first side wall and the second side wall are connected at the corner position through a stamping flange. The corner connector is simple in structure and low in cost; and the bottom wall and the side walls are formed in a non-splicing mode, the mechanical strength is higher, the structure is more stable, the machining dislocation defect of an existing corner connector when two plates are spliced is effectively overcome, and the machining precision and quality of the corner connector can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic frame technical field, concretely relates to a kind of corner brace for photovoltaic frame, photovoltaic frame and photovoltaic module. BACKGROUND

[0002] In the early stage of the development of photovoltaic industry, aluminum alloy becomes the main material for manufacturing photovoltaic frame and its corner brace due to its characteristics such as light weight, strong corrosion resistance and easy forming. In recent years, with the increasing application scenarios of photovoltaic modules, photovoltaic modules need to face more and more extreme environments, and the material requirements for photovoltaic frames and their corner braces are becoming more and more stringent. However, the photovoltaic frame and corner brace made of aluminum have defects such as easy deformation and instability, which are difficult to adapt to more extreme outdoor environments. Therefore, in recent years, steel photovoltaic frames and corner braces have been widely used due to their excellent mechanical strength, deformation resistance, load resistance and corrosion resistance.

[0003] However, as shown in the publication numbers CN217563597U, CN219834064U and CN219529490U, the bottom wall and / or side wall (especially the bottom wall) of the existing steel corner brace is usually formed by splicing two bottom plates (and / or two side plates) at the corner position through bite joint, welding, clamping or buckling, that is, the bottom wall (and / or side wall) of the existing steel corner brace is not a whole plate structure. Therefore, the mechanical strength and structural stability of the bottom wall (and / or side wall) of the existing steel corner brace need to be improved; moreover, the two bottom plates (and / or two side plates) of the existing steel corner brace are prone to processing misalignment during splicing, which affects the quality of the steel corner brace. SUMMARY

[0004] The utility model aims at overcoming the defects of prior art, and provides a kind of corner brace for photovoltaic frame, photovoltaic frame and photovoltaic module.

[0005] Based on this, the utility model discloses a kind of corner brace for photovoltaic frame, including bottom wall and side wall;The side wall includes the first side wall and the second side wall connected at corner, to be inserted into the corner code installation cavity of two photovoltaic frame strips adjacent at corner respectively;The side of the bottom wall adjacent at corner is bently connected with the first side wall, and the other side of the bottom wall adjacent at corner is bently connected with the second side wall;The outer edge of the side wall and / or bottom wall is equipped with the toothed structure for being inserted into the corner code installation cavity of photovoltaic frame strip;

[0006] The corner brace is a whole plate material, which is cut, punched and deformed in sequence, and the first side wall and the second side wall are connected at the corner position by stamping flanging.

[0007] Preferably, a gap is formed between the upper ends of the adjacent sides of the first and second side walls by cutting, and the lower ends of the adjacent sides of the first and second side walls are connected by the stamping flange formed by stamping deformation.

[0008] Preferably, the bottom wall is formed with a first extension and a second extension by cutting, so that the bottom wall is in an integrated structure in the shape of "┌".

[0009] The first extension corresponds to the first side wall, and the second extension corresponds to the second side wall, and the first and second extensions are respectively inserted into the two photovoltaic frame strips of the corner.

[0010] Further preferably, a reinforcing rib in the shape of "┌" is formed on the bottom wall by stamping at a local position of the bottom wall to reinforce the first and second extensions.

[0011] Further preferably, the corner code is formed by cutting a whole piece of steel plate, forming the bottom wall by stamping deformation, and bending the first and second side walls connected by the stamping flange at the two adjacent sides of the corner of the bottom wall.

[0012] Preferably, the top edge of the side wall is provided with a plurality of tooth-like structures extending upward, and the edge of the bottom wall away from the side wall is provided with a plurality of tooth-like structures extending outward.

[0013] Further preferably, the plurality of tooth-like structures of the side wall are all inclined toward the inner side of the corner code, and the inclination of the tooth-like structure close to the free end of the side wall is smaller than the inclination of the tooth-like structure close to the fixed end of the side wall.

[0014] Preferably, the free end of the first and second side walls is provided with a first guide piece inclined toward the inner side of the corner code, and the local position of the first and second extensions close to the first guide piece is inclined upward to form a second guide piece, so that the corner code is inserted into the corner code mounting cavity of the photovoltaic frame strip by the first and second guide pieces.

[0015] Further preferably, the height of the first guide piece gradually decreases from the fixed end to the free end.

[0016] Further preferably, a gap is formed between the free ends of the second and first guide pieces by cutting to separate the free ends of the second and first guide pieces from each other.

[0017] The utility model also discloses a photovoltaic frame, which comprises a plurality of photovoltaic frame strips connected in sequence and a corner code for connecting two photovoltaic frame strips adjacent at a corner.

[0018] The utility model discloses still disclose a kind of photovoltaic modules, including photovoltaic laminated part and the photovoltaic frame for installing photovoltaic laminated part, the photovoltaic frame is the photovoltaic frame of the utility model content above-mentioned.

[0019] Compared with the prior art, the utility model at least includes the following beneficial effects:

[0020] Compared with the existing steel material corner code (such as shown in CN217693227U, CN217240647U), the corner code of the utility model is a whole plate (such as a whole steel plate) which is cut and stamped in sequence, and the first side wall and the second side wall are connected by stamping flanging at the corner position. In this way, the stamping flanging makes the first side wall and the second side wall not easy to fall due to the mechanical support of the stamping flanging, which can improve the mechanical strength and structural stability of the whole side wall. Moreover, the bottom wall is a whole structure plate, not formed by splicing two bottom plates, so the mechanical strength of the corner code and its bottom wall is higher and the structure is more stable. Further, since the bottom wall and the side wall do not need to be spliced, the corner code can also effectively avoid the processing misalignment defect of the existing corner code during splicing of two plates, so as to improve the processing precision and quality of the corner code.

[0021] In addition, the tooth structure of the outer edge of the side wall and / or the bottom wall can greatly increase the frictional resistance and fastening force between the outer edge of the side wall (and / or the bottom wall) and the corner code mounting cavity. Therefore, the corner code does not need to add a top wall for insertion and mounting as in CN217240647U, which can meet the requirement of firm assembly, so as to simplify the structure of the corner code and reduce the raw material cost and manufacturing cost of the corner code. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the photovoltaic frame strip and the corner code in the split state in the photovoltaic frame of the embodiment.

[0023] Figure 2 It is a perspective structure schematic view of the corner code for the photovoltaic frame of the embodiment.

[0024] Figure 3 It is a perspective structure schematic view of the corner code for the photovoltaic frame of the embodiment from another angle.

[0025] Figure 4 It is a perspective structure schematic view of the bottom and the outside of the corner code for the photovoltaic frame of the embodiment.

[0026] Explanation of reference numerals: photovoltaic frame strip 1; laminated part mounting cavity 11; corner code mounting cavity 12; bending part 121;

[0027] Corner code 2; side wall 21; first side wall 211; second side wall 212; gap 213; stamping flange 214; first guide piece 215; bottom wall 22; first extension 221; second extension 222; reinforcing rib 223; second guide piece 224; toothed structure 23; gap 24. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, characteristics and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0029] EMBODIMENT

[0030] The photovoltaic frame of the embodiment, see Figure 1 , comprises a plurality of photovoltaic frame strips 1 and corner codes 2 (as shown in Figure 1 ) for connecting two adjacent photovoltaic frame strips 1 at the corner; wherein the photovoltaic frame strip 1 is provided with a laminated part mounting cavity 11 for inserting and mounting the side edge of the photovoltaic laminated part, and the lower part of the laminated part mounting cavity 11 is also provided with a corner code mounting cavity 12 for inserting and mounting the corner code 2, and the free end of the bottom plate of the corner code mounting cavity 12 is also provided with a bending part 121. The corner code 2 is a corner code for photovoltaic frame as shown in the following embodiment.

[0031] The corner code for photovoltaic frame of the embodiment, see Figures 2-4 , comprises a bottom wall 22 and a side wall 21. The side wall 21 comprises a first side wall 211 and a second side wall 212 connected at the corner; one side edge of the bottom wall 22 adjacent to the corner is connected to the first side wall 211 by bending, and the other side edge of the bottom wall 22 adjacent to the corner is connected to the second side wall 212 by bending. In practice, the first side wall 211 is used for inserting and mounting into the corner code mounting cavity 12 of one photovoltaic frame strip 1 (such as a short frame strip made of steel) adjacent to the corner, and the second side wall 212 is used for inserting and mounting into the corner code mounting cavity 12 of another photovoltaic frame strip 1 (such as a long frame strip made of steel) adjacent to the corner; in this way, the connection and assembly of the two adjacent photovoltaic frame strips 1 at the corner are realized.

[0032] In order to be assembled with the short frame strip or long frame strip made of steel, the corner code 2 is also a corner code made of steel. Compared with the existing corner code made of steel (as shown in CN217693227U and CN217240647U), the corner code 2 of the embodiment is a whole plate (such as a whole steel plate) which is cut and stamping deformed in sequence, and the first side wall 211 and the second side wall 212 are connected at the corner position by Figure 2The stamping flange 214 is connected to the first side wall 211 and the second side wall 212. In this way, the stamping flange 214 makes the first side wall 211 and the second side wall 212 not easy to fall due to the mechanical support of the stamping flange 214, and can improve the mechanical strength and structural stability of the entire side wall 21; further, the bottom wall 22 of the embodiment is a plate material of an integral structure, rather than being formed by splicing two bottom plates, so that the mechanical strength and structural stability of the corner code 2 and the bottom wall 22 thereof are higher; since the bottom wall 22 and the side wall 21 of the embodiment do not need to be spliced, the corner code 2 of the embodiment can also effectively avoid the processing misalignment defect of the existing corner code in the splicing process of the two plates, and thus the processing precision and quality of the corner code 2 of the embodiment can be improved.

[0033] The bottom wall 22 is cut to form a first extension 221 and a second extension 222, so that the bottom wall 22 is an integral structure in the shape of “┌” (as shown in Figure 3 The first extension 221 corresponds to the first side wall 211, and the second extension 222 corresponds to the second side wall 212. In practice, the first extension 221 and the first side wall 211 are inserted and installed together into the corner code installation cavity 12 of a photovoltaic frame strip 1 (such as a short frame strip made of steel) adjacent to the corner, and the second extension 222 and the second side wall 212 are inserted and installed together into the corner code installation cavity 12 of another photovoltaic frame strip 1 (such as a long frame strip made of steel) adjacent to the corner. Taking the first extension 221 and the first side wall 211 as an example, after being inserted and installed, the lower surface of the first extension 221 is in contact with the upper surface of the bottom plate of the corner code installation cavity 12, and the outer side surface of the first side wall 211 is in contact with the inner side surface of the side plate of the corner code installation cavity 12, so that in addition to the first side wall 211, the first extension 221 is also inserted and installed into the corner code installation cavity 12 to improve the firmness of the insertion and installation of the corner code 2, and further improve the structural stability of the corner code 2 after being assembled with the photovoltaic frame strip 1.

[0034] Further, a reinforcing rib 223 protruding upward is stamped at a local position of the bottom wall 22 (as shown in Figure 2 The reinforcing rib 223 is also in the shape of “┌”. In this way, the reinforcing rib 223 can strengthen the first extension 221 and the second extension 222 of the bottom wall 22, and further improve the mechanical strength of the bottom wall 22; moreover, the reinforcing rib 223 is stamped from the bottom wall 22, so that the reinforcing rib 223 and the bottom wall 22 are an integral structure (rather than a spliced structure separated from each other), and thus the structural stability of the entire bottom wall 22 can be further improved.

[0035] The upper end portions of the adjacent sides of the first side wall 211 and the second side wall 212 are cut to form a gap 213 (as shown in Figure 2The gap 213 is provided for facilitating the subsequent stamping deformation to form the first side wall 211, the stamping flange 214 and the second side wall 212.

[0036] Specifically, the corner brace 2 of the present embodiment is a whole piece of steel plate material after cutting (the cutting process includes cutting to form the gap 213, cutting to form the first extension 221 and the second extension 222 of the bottom wall 22, and cutting to form the first side wall 211 and the second side wall 212 connected by the stamping flange 214 as shown in the gap 24), and the bottom wall 22 is formed by stamping deformation, and the first side wall 211 and the second side wall 212 connected by the stamping flange 214 are respectively bent and erected on the two adjacent sides of the corner of the bottom wall 22. Figure 4 As such, the entire corner brace 2 is a whole structure (i.e. the bottom wall 22 and the side wall 21 are also stamped, not assembled), so as to further improve the mechanical strength and structural stability of the entire corner brace 2, and further improve the quality of the corner brace 2.

[0037] In order to further improve the firmness and structural stability of the corner brace 2 and the photovoltaic frame strip 1 after assembly, the outer edge of the bottom wall 22 and / or the side wall 21 is provided with a toothed structure 23 (such as an inverted tooth) for insertion and mounting into the corner brace mounting cavity 12 of the photovoltaic frame strip 1. Specifically, the top edge of the side wall 21 is provided with a plurality of toothed structures 23 extending upward; and the edge of the bottom wall 22 away from the side wall 21 is provided with a plurality of toothed structures 23 extending outward.

[0038] During assembly, the toothed structures 23 can greatly increase the frictional force and fastening force between the top edge of the side wall 21 (such as the top edge of the first side wall 211 and the top edge of the second side wall 212) and the top plate in the corner brace mounting cavity 12, and between the outer edge of the bottom wall 22 and the bent portion 121 in the corner brace mounting cavity 12. Therefore, the corner brace 2 of the present embodiment only needs to provide two mounting walls (such as the first side wall 211 and the first extension 221) that fit with the corner brace mounting cavity 12 for the assembly of a photovoltaic frame strip 1, without the need to provide three mounting walls as in the prior art of CN217240647U, so as to achieve firm assembly between the corner brace 2 and the photovoltaic frame strip 1, simplify the structure of the corner brace 2, and reduce the raw material cost and manufacturing cost.

[0039] Further, the existing corner code of CN219834064U has the following defects: the plurality of inverted teeth of the existing corner code of CN219834064U respectively tilt in two different directions (i.e., the sawtooth structure includes a plurality of first inverted teeth tilting outward and a plurality of second inverted teeth tilting outward), which is easily affected by the machining precision of the corner code mounting cavity of the photovoltaic frame strip, and the inverted teeth tilting in one direction are difficult to be clamped in the corner code mounting cavity. Based on this, taking the first side wall 211 as an example, the plurality of tooth structures 23 of the side wall 21 of the embodiment are all tilted towards the inner side of the corner code 2, i.e., the plurality of tooth structures 23 are all tilted towards the same side, and the tilting amplitude of the tooth structure 23 close to the free end of the side wall 21 is smaller than the tilting amplitude of the tooth structure 23 close to the fixed end of the side wall 21 (as shown in Figure 3 Thus, in order to avoid the defect that some tooth structures are difficult to be clamped in the corner code mounting cavity, the clamping effect of the tooth structure 23 of the side wall 21 of the embodiment in the corner code mounting cavity 12 of the photovoltaic frame strip 1 is better, and the clamping fastening force is higher; and the tilting amplitude of the tooth structure 23 close to the free end of the side wall 21 is relatively small, which can also make the clamping assembly of the tooth structure 23 of the side wall 21 in the corner code mounting cavity 12 more smooth and fast.

[0040] The free end of the first side wall 211 and the free end of the second side wall 212 are both provided with a first guide piece 215 tilted towards the inner side of the corner code 2; and the local position of the first extension 221 and the second extension 222 close to the first guide piece 215 is tilted upwards to the upper side of the bottom wall 22 to form a second guide piece 224. In this way, during assembly, the first guide piece 215 has a certain distance with the vertical side plate of the corner code mounting cavity 12 and does not produce friction, and the second guide piece 224 also has a certain distance with the horizontal bottom plate of the corner code mounting cavity 12 and does not produce friction; this can reduce the difficulty of inserting and installing the side wall 21 (such as the first side wall 211) and the bottom wall 22 (such as the first extension 221 of the bottom wall 22) in the corner code mounting cavity 12, make the assembly of the corner code 2 and the corner code mounting cavity 12 of the photovoltaic frame more easy, and play a moving guide role for the inserting and installing of the side wall 21 (such as the first side wall 211) and the bottom wall 22 (such as the first extension 221 of the bottom wall 22) in the corner code mounting cavity 12, so that the installation of the corner code 2 and the corner code mounting cavity 12 is more smooth and fast.

[0041] Further, the second guide piece 224 and the first guide piece 215 are provided with a gap 24 (as shown in Figure 4Thus, the free end of the second guide piece 224 and the free end of the first guide piece 215 are both flexible and more freely movable relative to each other, which can further reduce the difficulty of inserting and mounting the side wall 21 (such as the first side wall 211) and the bottom wall 22 (such as the first extension 221 of the bottom wall 22) into the corner fitting mounting cavity 12, and make the mounting of the corner fitting 2 and the corner fitting mounting cavity 12 more convenient and fast.

[0042] Further, the height dimension of the first guide piece 215 gradually decreases from the fixed end to the free end; this further makes the insertion and mounting of the side wall 21 (such as the first side wall 211) into the corner fitting mounting cavity 12 more smooth, flexible and fast.

[0043] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model embodiments.

[0044] The above describes the technical solutions provided by the utility model in detail, and the principle and implementation mode of the utility model are described by applying specific examples; the above embodiment description is only for helping to understand the method and core idea of the utility model; meanwhile, for those skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will have changes; in conclusion, the content of the specification should not be understood as limiting the utility model.

Claims

1. A corner bracket for a photovoltaic frame, characterized by, The corner code comprises a bottom wall and a side wall; the side wall comprises a first side wall and a second side wall connected at a corner, respectively inserted into the corner code installation cavity of two photovoltaic frame strips adjacent to the corner; the corner adjacent side of the bottom wall is connected with the first side wall by bending, and the other corner adjacent side of the bottom wall is connected with the second side wall by bending; the outer edge of the side wall and / or the bottom wall is provided with a tooth-like structure for being inserted into the corner code installation cavity of the photovoltaic frame strip; The first side wall and the second side wall are connected at the corner position by a stamping flange.

2. The corner bracket for photovoltaic frame according to claim 1, characterized in that, The upper end of the adjacent side of the first side wall and the second side wall is formed with a gap by cutting, and the lower end of the adjacent side of the first side wall and the second side wall is connected by a stamping flange formed by stamping deformation.

3. The corner bracket for photovoltaic frame according to claim 1, wherein, The bottom wall is formed with a first extension and a second extension by cutting, so that the bottom wall as a whole is an integrated "┌" type structure. The first extension corresponds to the first side wall, and the second extension corresponds to the second side wall, and the first extension and the second extension are respectively inserted into the two photovoltaic frame strips of the corner.

4. The corner bracket for photovoltaic frame according to claim 3, characterized in that, The bottom wall is formed with a "┌" type reinforcing rib protruding upward at a local position by stamping, so as to reinforce the first extension and the second extension.

5. The corner bracket for photovoltaic frame according to any one of claims 1-4, characterized in that, The corner code is a whole piece of steel plate material, which is cut and formed into a bottom wall by stamping deformation, and the first side wall and the second side wall connected by stamping flange are respectively bent and erected at the two corner adjacent sides of the bottom wall.

6. The corner bracket for photovoltaic frame according to claim 1, wherein, The top edge of the side wall is provided with a plurality of tooth-like structures extending upward; the edge of the bottom wall away from the side wall is provided with a plurality of tooth-like structures extending outward.

7. The corner bracket for photovoltaic frame according to claim 1 or 6, characterized in that, The plurality of tooth-like structures of the side wall are all inclined toward the inside of the corner code, and the inclination amplitude of the tooth-like structure close to the free end of the side wall is smaller than that of the tooth-like structure close to the fixed end of the side wall.

8. The corner bracket for photovoltaic frame according to claim 3, characterized in that, The free end of the first side wall and the second side wall is provided with a first guide piece inclined toward the inside of the corner code, and the local position of the first extension and the second extension close to the first guide piece is inclined upward to form a second guide piece, so as to insert the corner code into the corner code installation cavity of the photovoltaic frame strip through the first guide piece and the second guide piece.

9. The corner bracket for photovoltaic frame according to claim 8, characterized in that, The height dimension of the first guide piece gradually decreases from the fixed end to the free end.

10. The corner bracket for photovoltaic frame according to claim 8, characterized in that, The second guide piece and the first guide piece are provided with a gap formed by cutting for separating the free ends of the second guide piece and the first guide piece from each other.

11. A photovoltaic frame comprising a plurality of photovoltaic frame strips connected end to end in sequence and corner fittings for connecting two photovoltaic frame strips adjacent at a corner, characterized in that, The corner code is a photovoltaic frame corner code according to any one of claims 1-10.

12. A photovoltaic module comprising a photovoltaic laminate and a photovoltaic frame for mounting the photovoltaic laminate, characterized in that The photovoltaic frame is a photovoltaic frame according to claim 11.

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