Corner code, photovoltaic frame and photovoltaic module

Abstract

The application relates to a corner code, a photovoltaic frame and a photovoltaic module. The corner code comprises a base, a side plate and a top plate, wherein the top plate is oppositely arranged with the base, the side plate is connected with the base and the top plate, the base, the side plate and the top plate jointly enclose a containing groove, the containing groove is used for containing a top corner of a frame of the photovoltaic module, the top plate and / or the base is further provided with a limiting hole penetratingly arranged, the limiting hole is used for penetratingly arranging a limiting piece, and the limiting piece is used for being clamped and matched with a side of the frame away from the side plate. The corner code, the photovoltaic frame and the photovoltaic module do not need to arrange a cavity on the frame, can cover and fix the corner code on the top corner of the frame, realize the structural strength of the joint of the long frame and the short frame, and solve the problem that the four corners are not fixed and are easy to be disconnected after the long frame and the short frame are jointed, and the load capacity of the photovoltaic module is increased.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module technology, and in particular to a corner bracket, a photovoltaic frame, and a photovoltaic module. Background Technology

[0002] Photovoltaic modules are the core components of solar power generation systems. A typical photovoltaic module consists of solar cells, encapsulation materials, a cover glass plate, and an outer frame. The frame not only protects the internal solar cells and encapsulation materials from mechanical damage and environmental corrosion, but also provides structural support for the installation and transportation of the photovoltaic module. Therefore, the performance of the frame directly affects the reliability, lifespan, and system cost of the photovoltaic module.

[0003] In related technologies, photovoltaic (PV) frames typically include a long frame, a short frame, and corner brackets. The corner brackets have an L-shaped structure, with both ends inserted into the cavities of the long and short frames, respectively, thus splicing the long and short frames into a single unit. With the development of PV module technology, "frameless" PV modules have gradually emerged. "Frameless" PV modules eliminate the cavity structure in their frames, resulting in narrower frames, thereby reducing shading of the effective light-receiving area of ​​the solar cells, material costs, and frame weight. However, the lack of a cavity structure in the frame of "frameless" PV modules means that existing frame corner brackets are incompatible for installation. Utility Model Content

[0004] Therefore, it is necessary to provide a corner bracket, photovoltaic frame, and photovoltaic module to address the problem of how to connect and fix a cavityless photovoltaic frame.

[0005] In a first aspect, this application provides a corner bracket, including a base, a side plate, and a top plate, wherein the top plate is disposed opposite to the base, the side plate connects the base and the top plate, and the base, the side plate, and the top plate together form a receiving groove, the receiving groove being used to receive the top corner of the frame of a photovoltaic module, and the top plate and / or the base are further provided with a limiting hole through the top plate, the limiting hole being used to insert a limiting member, the limiting member being used to engage with the side of the frame away from the side plate.

[0006] The technical solution will be further explained below:

[0007] In one embodiment, the base is used to support the back of the photovoltaic module, and the height of the base protruding from the back of the photovoltaic module is greater than or equal to the height of the junction box of the photovoltaic module protruding from the back of the photovoltaic module.

[0008] In one embodiment, the base has at least two supporting feet protruding from the side opposite to the top plate, and a hollow groove is formed between two adjacent supporting feet.

[0009] In one embodiment, the base includes a first seat and a second seat connected at an angle, the first seat being used to support the back of the long side of the frame, and the second seat being used to support the back of the short side of the frame.

[0010] The side panel includes a first surface and a second surface connected at an angle. The first surface is connected to the first seat and is used to abut against the outer side of the long frame; the second surface is used to abut against the outer side of the short frame.

[0011] The top plate includes a first plate and a second plate connected at an angle. The first plate is connected to the first surface and is used to abut against the top surface of the long frame; the second plate is used to abut against the top surface of the short frame.

[0012] In one embodiment, both the first seat and the second seat have the limiting hole; and / or, both the first plate and the second plate have the limiting hole.

[0013] In one embodiment, a first rounded corner is formed between the first seat and the second seat; and / or, a second rounded corner is formed between the first plate and the second plate.

[0014] In one embodiment, a first chamfer is formed between the first seat and the second seat; and / or, a second chamfer is formed between the first plate and the second plate.

[0015] In one embodiment, the base, the side plate, and the top plate are integrally formed.

[0016] Secondly, this application also provides a photovoltaic frame, including a frame and the aforementioned corner code. The frame includes a long frame and a short frame, the long frame and the short frame are connected at an angle, and the connection between the long frame and the short frame forms a apex corner. The corner code is covered on the apex corner by the receiving groove.

[0017] Thirdly, this application also provides a photovoltaic module, including the aforementioned photovoltaic frame.

[0018] In the aforementioned corner bracket, a receiving groove is formed by the base, side plate, and top plate. The receiving groove can accommodate the top corner of the photovoltaic module frame. A limiting hole is also opened through the top plate and / or base, and a limiting component is inserted in the limiting hole so that the limiting component engages with the side of the frame away from the side plate. In this way, the corner bracket can be covered and fixed to the top corner of the frame without the need to set a cavity in the frame. This strengthens the structural strength at the splicing of the long and short frames, thereby solving the problem that the four corners are not fixed after the long and short frames are spliced ​​and are prone to breakage, and increasing the load capacity of the photovoltaic module. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a photovoltaic module according to one embodiment.

[0023] Figure 2 for Figure 1 The rear view of the photovoltaic module described herein.

[0024] Figure 3 This is a schematic diagram of a structure in which two photovoltaic modules are stacked in one embodiment.

[0025] Figure 4 This is a schematic diagram of the corner bracket structure in the first embodiment.

[0026] Figure 5 This is a schematic diagram of the corner bracket structure in the second embodiment.

[0027] Figure 6 This is a schematic diagram of the corner bracket structure in the third embodiment.

[0028] Figure 7 This is a schematic diagram of the corner bracket structure in the fourth embodiment.

[0029] Explanation of reference numerals in the attached figures

[0030] 10. Laminated component; 11. Junction box; 20. Frame; 21. Long frame; 22. Short frame; 30. Corner bracket; 31. Base; 311. First seat; 312. Second seat; 313. Support foot; 314. Hollowed-out groove; 32. Side panel; 321. First surface; 322. Second surface; 33. Top panel; 331. First plate; 332. Second plate; 34. Receiving groove; 35. Limiting hole; 361. First rounded corner; 362. Second rounded corner; 371. First chamfer; 372. Second chamfer. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] See Figure 1 as well as Figure 2 One embodiment of the photovoltaic module includes a laminate 10 and a photovoltaic frame 20. Exemplarily, the laminate 10 includes a backsheet, solar cells, a cover plate, and encapsulation material disposed between the backsheet and the cover plate for encapsulating the solar cells. The photovoltaic frame 20 surrounds the laminate 10 to protect the internal solar cells and encapsulation material from mechanical damage and environmental corrosion, while providing structural support for the installation and transportation of the photovoltaic module.

[0038] Furthermore, the photovoltaic module also includes a junction box 11, which is connected to the back of the photovoltaic module. The junction box 11 is used to connect external devices or external cables to lead the current generated by the photovoltaic module to the external devices or external cables.

[0039] See also Figure 1 This application also provides a photovoltaic frame 20 for protecting and supporting the aforementioned laminate 10. Specifically, one embodiment of the photovoltaic frame 20 includes a frame 20 and corner brackets 30. The frame 20 includes a long frame 21 and a short frame 22, which are connected at an angle. The connection between the long frame 21 and the short frame 22 forms a apex corner, and the corner brackets 30 cover the apex corner to strengthen the structural strength at the splicing point between the long frame 21 and the single frame 20. This solves the problem that the four corners are not fixed after the long frame 21 and the short frame 22 are spliced, which can easily lead to breakage, and increases the load-bearing capacity of the photovoltaic module.

[0040] Specifically, the frame 20 includes two long frames 21 and two short frames 22, which are connected end to end to form a rectangular frame structure. As is easily understood, the rectangular frame structure has four vertices. Correspondingly, the photovoltaic frame 20 includes four corner brackets 30, which are correspondingly wrapped around the four vertices, thereby further enhancing the overall load-bearing capacity of the photovoltaic module.

[0041] It is worth noting that in this embodiment, both the long frame 21 and the short frame 22 of the frame 20 are cavityless, which allows the frame 20 to be narrower, thereby reducing the obstruction of the effective light-receiving area of ​​the solar cell by the frame 20, while also reducing material costs and the weight of the frame 20. However, traditional corner brackets require insertion into the cavity of the frame 20 for installation and fixation.

[0042] Based on this, this application also provides a corner bracket 30 suitable for a cavity-less border 20. See also Figure 4 , Figure 4 A schematic diagram of the corner bracket 30 according to an embodiment of this application is shown. Specifically, the corner bracket 30 of one embodiment includes a base 31, a side plate 32, and a top plate 33. The top plate 33 is disposed opposite to the base 31, the side plate 32 connects the base 31 and the top plate 33, and the base 31, the side plate 32, and the top plate 33 together form a receiving groove 34. The receiving groove 34 is used to receive the top corner of the frame 20 of the photovoltaic module. The top plate 33 and / or the base 31 are also provided with a limiting hole 35 through them. The limiting hole 35 is used to pass through a limiting member (not shown), which is used to engage with the side of the frame 20 away from the side plate 32.

[0043] Specifically, the base 31 is used to support the back of the frame 20, the side plate 32 is used to abut against the outer side of the frame 20, the top plate 33 is used to abut against the top surface of the frame 20, and the limiting member passes through the limiting hole 35 and is snapped into the inner side of the frame 20. In this way, the corner bracket 30 can be fixed to the top corner of the frame 20, thus fixing the splice of the long frame 21 and the short frame 22. For example, the limiting member can be a rivet or the like.

[0044] In the aforementioned corner bracket 30, a receiving groove 34 is formed by the base 31, side plate 32, and top plate 33. The receiving groove 34 can accommodate the top corner of the frame 20 of the photovoltaic module. A limiting hole 35 is also opened through the top plate 33 and / or the base 31. A limiting member is inserted in the limiting hole 35 so that the limiting member is engaged with the side of the frame 20 away from the side plate 32. In this way, the corner bracket 30 can be covered and fixed to the top corner of the frame 20 without setting a cavity in the frame 20, thereby strengthening the structural strength at the splicing point of the long frame 21 and the short frame 22. This solves the problem that the four corners are not fixed after the long frame 21 and the short frame 22 are spliced ​​and are prone to breakage, thus increasing the load capacity of the photovoltaic module.

[0045] See Figure 3 In one embodiment, the base 31 is used to support the back of the photovoltaic module, and the height of the base 31 protruding from the back of the photovoltaic module is greater than or equal to the height of the junction box 11 protruding from the back of the photovoltaic module. Thus, when the photovoltaic modules are stacked, the junction box 11 can maintain a certain distance from another adjacent photovoltaic module or the ground below, preventing the junction box 11 from directly pressing against another photovoltaic module or the ground, thereby avoiding problems such as microcracks in the photovoltaic modules or damage to the junction box 11.

[0046] See Figure 5 In one embodiment, at least two support feet 313 protrude from the side of the base 31 away from the top plate 33, and a hollow groove 314 is formed between two adjacent support feet 313. By providing at least two support feet 313 protruding from the side of the base 31 away from the top plate 33 and forming a hollow groove 314 between two adjacent support feet 313, the height of the base 31 can be increased while saving material for the base 31, thereby saving material costs and reducing the weight of the corner bracket 30.

[0047] See Figure 4 In some embodiments, the base 31 includes a first seat 311 and a second seat 312 connected at an angle. The first seat 311 is used to support the back of the long sidewall 21 of the frame 20, and the second seat 312 is used to support the back of the short sidewall 22 of the frame 20. Specifically, the first seat 311 and the second seat 312 are connected at a right angle, that is, the base 31 has an overall L-shaped structure.

[0048] The side panel 32 includes a first surface 321 and a second surface 322 connected at an angle. The first surface 321 is connected to the first base 311. The first surface 321 is used to abut against the outer side of the long frame 21. The second surface 322 is used to abut against the outer side of the short frame 22. Similarly, the first surface 321 and the second surface 322 are connected at a right angle, that is, the side panel as a whole is also L-shaped.

[0049] The top plate 33 includes a first plate 331 and a second plate 332 connected at an angle. The first plate 331 is connected to the first surface 321 and is used to abut against the top surface of the long frame 21; the second plate 332 is used to abut against the top surface of the short frame 22. Similarly, the first plate 331 and the second plate 332 are connected at a right angle, that is, the top plate 33 as a whole also has an L-shaped structure.

[0050] In summary, the corner code 30 has an overall L-shaped structure, and the receiving slot 34 is also an L-shaped slot, which can better fit the top corner of the right-angled frame 20.

[0051] See Figure 4In some embodiments, both the first seat 311 and the second seat 312 have limiting holes 35; both the first plate 331 and the second plate 332 have limiting holes 35. Thus, the limiting members inserted on the first seat 311 and the first plate 331 can engage with the inner side of the long frame 21, thereby limiting the corner bracket 30 from the width direction of the frame 20; similarly, the limiting members inserted on the second seat 312 and the second plate 332 can engage with the inner side of the short frame 22, thereby limiting the corner bracket 30 from the length direction of the frame 20, ultimately locking the corner bracket 30 firmly at the opposite corner of the frame 20.

[0052] Understandably, in other embodiments, the limiting hole 35 may also be opened separately in either the first seat 311 or the first plate 331, or in either the second seat 312 or the second plate 332, so that the corner bracket 30 can also be fixed at the opposite corner of the frame 20.

[0053] See Figure 6 In some embodiments, a first rounded corner 361 is formed between the first base 311 and the second base 312; a second rounded corner 362 is formed between the first plate 331 and the second plate 332. This reduces the material consumption of the corner bracket 30, lowers the material cost, and also reduces the shading of the effective light-receiving surface of the solar cell by the corner bracket 30, thereby improving the output power of the photovoltaic module.

[0054] Similarly, in other embodiments, a first chamfer 371 is formed between the first base 311 and the second base 312; a second chamfer 372 is formed between the first plate 331 and the second plate 332. This can reduce the material consumption of the corner bracket 30, reduce material costs, and at the same time, reduce the shading of the effective light-receiving surface of the solar cell by the corner bracket 30, thereby improving the output power of the photovoltaic module.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A corner fitting (30), characterized by, The device includes a base (31), a side plate (32), and a top plate (33). The top plate (33) is disposed opposite to the base (31). The side plate (32) connects the base (31) and the top plate (33). The base (31), the side plate (32), and the top plate (33) together form a receiving groove (34). The receiving groove (34) is used to receive the top corner of the frame (20) of the photovoltaic module. The top plate (33) and / or the base (31) are also provided with a limiting hole (35). The limiting hole (35) is used to insert a limiting member. The limiting member is used to engage with the side of the frame (20) away from the side plate (32).

2. The corner fitting (30) of claim 1, wherein, The base (31) is used to support the back of the photovoltaic module, and the height of the base (31) protruding from the back of the photovoltaic module is greater than or equal to the height of the junction box (11) of the photovoltaic module protruding from the back of the photovoltaic module.

3. The corner fitting (30) of claim 1, wherein, The base (31) has at least two support feet (313) protruding from the side opposite to the top plate (33), and a hollow groove (314) is formed between two adjacent support feet (313).

4. The corner code (30) according to claim 1, characterized in that: The base (31) includes a first seat (311) and a second seat (312) connected at an angle. The first seat (311) is used to support the back of the long side (21) of the frame (20), and the second seat (312) is used to support the back of the short side (22) of the frame (20). The side panel (32) includes a first surface (321) and a second surface (322) connected at an angle. The first surface (321) is connected to the first base (311). The first surface (321) is used to abut against the outer side of the long frame (21). The second surface (322) is used to abut against the outer side of the short frame (22). The top plate (33) includes a first plate (331) and a second plate (332) connected at an angle. The first plate (331) is connected to the first surface (321). The first plate (331) is used to abut against the top surface of the long frame (21). The second plate (332) is used to abut against the top surface of the short frame (22).

5. The corner fitting (30) of claim 4, wherein, The first seat (311) and the second seat (312) are both provided with the limiting hole (35); and / or, the first plate (331) and the second plate (332) are both provided with the limiting hole (35).

6. The corner fitting (30) of claim 4, wherein, A first rounded corner (361) is formed between the first seat (311) and the second seat (312); and / or, a second rounded corner (362) is formed between the first plate (331) and the second plate (332).

7. The corner fitting (30) of claim 4, wherein, A first chamfer (371) is formed between the first seat (311) and the second seat (312); and / or, a second chamfer (372) is formed between the first plate (331) and the second plate (332).

8. The corner fitting (30) of claim 1, wherein, The base (31), the side plate (32), and the top plate (33) are integrally formed.

9. A photovoltaic frame (20), characterized in that, The device includes a border (20) and a corner piece (30) as described in any one of claims 1-8. The border (20) includes a long border (21) and a short border (22). The long border (21) and the short border (22) are connected at an angle, and the connection between the long border (21) and the short border (22) forms a apex corner. The corner piece (30) is covered by the receiving groove (34) on the apex corner.

10. A photovoltaic module, characterized by, Includes the photovoltaic frame (20) as described in claim 9.

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