Frame, photovoltaic module and photovoltaic power generation system

Abstract

The utility model relates to a frame, a photovoltaic module and a photovoltaic power generation system. The frame comprises a plurality of frame strips, and all the frame strips are sequentially connected end to end and are used for jointly surrounding the edge of a laminated piece of the photovoltaic module. Each frame strip comprises a frame body and two flanges, and the frame body is provided with a face A, a face C and a face B, wherein the face A and the face C are oppositely arranged, and the face B is connected with the face A and the face C. The two flanges are connected to the C face and extend in the direction away from the B face, the two flanges are located at the two ends of the C face respectively, and a hollowed-out area is formed between the two flanges. Wherein in the two connected frame strips, the flange of one frame strip and the flange of the other frame strip are spliced to form a mounting part used for being connected with a mounting bracket. The frame can effectively reduce the material cost and improve the power generation efficiency of the photovoltaic module without affecting the structural strength of the photovoltaic module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power generation, in particular to a frame, a photovoltaic module and a photovoltaic power generation system. BACKGROUND

[0002] In order to reduce the impurities such as water vapor into the photovoltaic module, after the laminating process, it is usually necessary to set a frame on the edge of the laminated part of the photovoltaic module to seal the edge of the laminated part. The frame usually includes an A surface located on the front surface of the laminated part, a B surface located on the side surface of the laminated part, and a C surface opposite to the A surface, and the C surface is usually connected to the mounting bracket by bolts to realize the mounting and fixing of the photovoltaic module.

[0003] However, in order to meet the bolt connection requirement of the C surface, it is usually necessary to make the C surface of the frame as a whole to protrude a certain width away from the B surface, so as to form bolt holes on the C surface. Therefore, in the related art, the C surface of the frame is usually wide. However, the wide C surface not only increases the material of the frame and increases the cost, but also blocks the back surface of the photovoltaic module from receiving light for the double-sided photovoltaic module, thereby affecting the power generation efficiency of the photovoltaic module. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a frame, a photovoltaic module and a photovoltaic power generation system to reduce the cost of the photovoltaic module and improve the power generation efficiency of the photovoltaic module.

[0005] In a first aspect, the present application provides a frame, which comprises a plurality of frame strips, all of which are connected end to end and used to collectively surround the edge of the laminated part of the photovoltaic module, and each of the frame strips comprises:

[0006] a frame body having an A surface and a C surface arranged opposite to each other, and a B surface connecting the A surface and the C surface;

[0007] two flanges, both of which are connected to the C surface and extend away from the B surface, and both of which are located at two ends of the C surface, and a hollow area is formed between the two flanges;

[0008] Among the two connected frame strips, the flange of one frame strip is connected to the flange of the other frame strip to form a mounting portion for connecting the mounting bracket.

[0009] The technical solutions are further described as follows:

[0010] In one embodiment, the flange is provided with a connecting hole for penetrating a threaded connecting piece.

[0011] In one embodiment, the width of the flange gradually decreases away from the B surface.

[0012] In one embodiment, the flange includes a top edge, a first side edge connected to one end of the top edge, and a second side edge connected to the other end of the top edge. The top edge is parallel to the B-side. The first side edge is closer to the hollow area than the second side edge. The second side edge is coplanar with the end face of the frame body.

[0013] In one embodiment, the first side has a concave arc structure; and / or, the second side is set at a 45° angle to the B surface.

[0014] Secondly, this application also provides a photovoltaic module, including a laminate and the aforementioned frame, wherein the frame is fitted onto the edge of the laminate.

[0015] Thirdly, this application also provides a photovoltaic power generation system, comprising:

[0016] The aforementioned photovoltaic modules;

[0017] The mounting bracket is connected to the mounting part and is used to support the photovoltaic module;

[0018] A pressure block is connected to the mounting bracket and abuts against surface A and surface B of the frame.

[0019] In one embodiment, the mounting bracket includes:

[0020] A base, which supports and cooperates with the mounting part, and the pressure block is detachably mounted on the base;

[0021] A support column, which is connected to the base and is used to support the base.

[0022] In one embodiment, the base is provided with a first protrusion and a second protrusion, the first protrusion abutting against the B side of the frame, and the second protrusion abutting against the side of the flange opposite to the B side.

[0023] In one embodiment, the mounting bracket includes a purlin and a threaded connector. The purlin has a mounting groove, and one end of the threaded connector is confined in the mounting groove, while the other end is connected to the flange.

[0024] In the aforementioned frame, photovoltaic module, and photovoltaic power generation system, each frame strip has flanges protruding from both ends of its C-side. The two flanges of two connected frame strips are joined together to form a mounting section. This mounting section connects to the mounting bracket, enabling stable installation of the photovoltaic module. Because the mounting section is formed by joining the two flanges of two connected frame strips, the contact area between the frame and the mounting bracket is effectively increased, ensuring that the mounting bracket can simultaneously connect to two adjacent frame strips, thus guaranteeing the connection strength between the frame and the mounting bracket. Simultaneously, the hollow area formed between the two flanges of each frame strip effectively reduces the material cost of the frame and minimizes light obstruction to the back of the laminate, thereby improving the power generation efficiency of the photovoltaic module. In summary, the aforementioned frame effectively reduces material costs and improves the power generation efficiency of the photovoltaic module without affecting its structural strength. Attached Figure Description

[0025] 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.

[0026] 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.

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the structure of a photovoltaic module according to one embodiment.

[0029] Figure 2 for Figure 1 The rear view of the photovoltaic module shown.

[0030] Figure 3 This is a schematic diagram of the frame strip in one embodiment.

[0031] Figure 4 for Figure 3 The rear view of the frame shown.

[0032] Figure 5 for Figure 4 The image shows a magnified view of part E.

[0033] Figure 6 This is a schematic diagram of the structure of a photovoltaic power generation system according to one embodiment.

[0034] Figure 7 for Figure 6 A partial schematic diagram of part F shown in the figure.

[0035] Figure 8 for Figure 6 A partial schematic diagram of part G shown in the figure.

[0036] Figure 9 This is a schematic diagram of a photovoltaic power generation system according to another embodiment.

[0037] Figure 10 for Figure 9 The diagram shows the connection between the photovoltaic modules and the purlins in the photovoltaic power generation system shown.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Photovoltaic module; 10. Frame; 101. Long frame strip; 102. Short frame strip; 11. Frame body; 111. A side; 112. B side; 113. C side; 12. Flange; 121. Connecting hole; 122. Top edge; 123. First side edge; 124. Second side edge; 13. Hollow area; 20. Laminated component; 30. Mounting bracket; 31. Base; 312. Second protrusion; 313. First protrusion; 32. Support column; 33. Purlin; 331. Mounting groove; 34. Support strip; 35. Threaded connector; 36. Limiting block; 40. Pressure block. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Specifically, one embodiment of this application provides a photovoltaic module 1, see [link to relevant documentation]. Figure 1 as well as Figure 2 In one embodiment, the photovoltaic module 1 includes a laminate 20 and a frame 10, wherein the frame 10 surrounds the edge of the laminate 20 to seal and protect the edge of the laminate 20. Exemplarily, in one embodiment, the photovoltaic module 1 is a bifacial photovoltaic module, that is, both the front and back sides of the photovoltaic module 1 can receive sunlight and generate electricity.

[0047] Specifically, as mentioned above, traditional photovoltaic modules 1 are fixed to mounting brackets 30 with bolts. To meet the bolt connection requirements of the frame 10, the C-side 113 of the frame 10 usually needs to extend a certain width away from the B-side 112. Therefore, the C-side 113 of the frame 10 of traditional photovoltaic modules 1 is usually relatively wide. However, increasing the width of the C-side 113 has a limited effect on increasing the overall rigidity of the frame 10. Its main function is only to accommodate bolt installation. Moreover, the wider C-side 113 not only increases the material of the frame 10, increasing costs, but also blocks the back of the photovoltaic module 1 from receiving sunlight, affecting the power generation efficiency of the photovoltaic module 1.

[0048] Based on this, this application also provides a frame 10 that can be applied to the aforementioned photovoltaic module 1. Specifically, see... Figure 3 as well as Figure 4 In one embodiment, the frame 10 includes multiple frame strips, all of which are connected end-to-end and used to jointly surround the edge of the laminate 20 of the photovoltaic module 1. Exemplarily, in conjunction with... Figure 2 The frame 10 includes four frame strips, namely two long frame strips 101 and two short frame strips 102. The two long frame strips 101 are respectively fitted on the two long sides of the laminate 20, and the two short frame strips 102 are respectively fitted on the two short sides of the laminate 20. The long frame strips 101 and the short frame strips 102 are connected by corner brackets.

[0049] See Figure 3 Furthermore, each frame strip includes a frame body 11 and two flanges 12. The frame body 11 has an A-side 111 and a C-side 113 arranged opposite to each other, and a B-side 112 connecting the A-side 111 and the C-side 113. Both flanges 12 are connected to the C-side 113 and extend in a direction away from the B-side 112. The two flanges 12 are located at opposite ends of the C-side 113, forming a hollow area 13 between the two flanges 12. Figure 2 In the two connected frame strips, the flange 12 of one frame strip is spliced ​​with the flange 12 of the other frame strip to form a mounting part for connecting the mounting bracket 30. That is, the flange 12 on the long frame strip 101 and the flange 12 on the short frame strip 102 can be spliced ​​to form a mounting part.

[0050] In the aforementioned frame 10, each frame strip has flanges 12 protruding from both ends of its C-side 113. The two flanges 12 of two connected frame strips are joined together to form a mounting portion, which is then connected to the mounting bracket 30, thus achieving stable installation of the photovoltaic module 1. Since the mounting portion is formed by joining the two flanges 12 of two connected frame strips, the contact area between the frame 10 and the mounting bracket 30 is effectively increased, ensuring that the mounting bracket 30 can simultaneously connect to two adjacent frame strips, thereby guaranteeing the connection strength between the frame 10 and the mounting bracket 30. Simultaneously, a hollow area 13 is formed between the two flanges 12 of each frame strip, effectively reducing the material cost of the frame 10 and minimizing light obstruction to the back of the laminate 20, thereby improving the power generation efficiency of the photovoltaic module 1. In summary, the aforementioned frame 10 can effectively reduce material costs and improve the power generation efficiency of the photovoltaic module 1 without affecting its structural strength.

[0051] See Figure 5 In one embodiment, the flange 12 has a connecting hole 121 for threaded connectors to pass through, so that the flange 12 can be connected and fixed to the mounting bracket 30 via the threaded connectors. Optionally, the connecting hole 121 can be a round hole, and the number of connecting holes 121 can be one or more. The threaded connector 35 can be a bolt.

[0052] See Figure 5 Optionally, in one embodiment, the width of the flange 12 gradually decreases along the direction away from surface B 112. That is, the root of the flange 12 is wider and the top is narrower, thereby reducing the material of the flange 12 while ensuring its strength.

[0053] See also Figure 5 In one embodiment, the flange 12 includes a top edge 122, a first side edge 123 connected to one end of the top edge 122, and a second side edge 124 connected to the other end of the top edge 122. The top edge 122 is arranged parallel to the B-side 112. The first side edge 123 is closer to the hollow area 13 than the second side edge 124. The second side edge 124 is coplanar with the end face of the frame body 11, thereby ensuring that when the long frame strip 101 and the short frame strip 102 are spliced ​​together, their flanges 12 can also be tightly spliced ​​to form an installation part.

[0054] For example, the second side 124 is set at a 45° angle to the B-side 112. In this way, when the long frame strip 101 and the short frame strip 102 are spliced ​​to form a 90° corner, the flange 12 of the long frame strip 101 and the flange 12 of the short frame strip 102 can be tightly spliced ​​to form an L-shaped mounting part, preventing a large splicing seam between the flange 12 of the long frame strip 101 and the flange 12 of the short frame strip 102, and improving the structural strength of the mounting part.

[0055] Alternatively, in one embodiment, the first side 123 has a concave arc structure. The concave arc structure of the first side 123 can effectively disperse stress, thus avoiding stress concentration at the root of the flange 12 and subsequent breakage.

[0056] In one embodiment, this application also provides a photovoltaic power generation system, see [link to relevant documentation]. Figure 6 as well as Figure 7 One embodiment includes a photovoltaic module 1, a mounting bracket 30, and a pressure block 40 as described in any of the above embodiments. The mounting bracket 30 is connected to the mounting portion of the photovoltaic module 1 and is used to support the photovoltaic module 1. The pressure block 40 is connected to the mounting bracket 30 and abuts against the A-side 111 and B-side 112 of the frame 10.

[0057] The aforementioned photovoltaic power generation system connects the mounting bracket 30 to the mounting portion of the frame 10, and the pressure block 40 fixed on the mounting bracket 30 abuts against the A-side 111 and B-side 112 of the photovoltaic module 1, thereby limiting the photovoltaic module 1 in the vertical and horizontal directions to fix the photovoltaic module 1. Since the mounting portion of the frame 10 is formed by splicing two flanges 12 of two connected frame strips, the contact area between the frame 10 and the mounting bracket 30 is effectively increased, and the mounting bracket 30 can be connected to two adjacent frame strips simultaneously, thus ensuring the connection strength between the frame 10 and the mounting bracket 30. Simultaneously, since a hollow area 13 is formed between the two flanges 12 of each frame strip, the material cost of the frame 10 is effectively reduced, while reducing light blocking on the back of the laminate 20, thereby improving the power generation efficiency of the photovoltaic module 1. In summary, the aforementioned frame 10 can effectively reduce material costs and improve the power generation efficiency of the photovoltaic module 1 without affecting its structural strength.

[0058] See Figure 6 Optionally, in one embodiment, the number of photovoltaic modules 1 is multiple, and the multiple photovoltaic modules 1 are arranged in an array, thereby effectively increasing the power generation efficiency of the photovoltaic power generation system. Optionally, in one embodiment, the pressing block 40 may include an edge pressing block 40 and a middle pressing block 40. For example, see Figure 7 The outer pressure block 40 has a Z-shaped structure, and the edge pressure block 40 is used to abut against the outer frame strip in the frame 10 of the photovoltaic module 1. See also Figure 8 The intermediate pressure block 40 has a T-shaped structure and is set between two adjacent photovoltaic modules 1. The intermediate pressure block 40 abuts against the frame 10 of the two adjacent photovoltaic modules 1 at the same time to fix the two adjacent photovoltaic modules 1 simultaneously, thereby saving the number of pressure blocks 40 and reducing costs.

[0059] See Figure 7Optionally, in one embodiment, the mounting bracket 30 includes a base 31 and a support column 32. The base 31 supports and cooperates with the mounting part, and the pressure block 40 is detachably mounted on the base 31. Exemplarily, the pressure block 40 can be bolted to the base 31. The support column 32 is connected to the base 31 and is used to support the base 31.

[0060] Optionally, in one embodiment, the base 31 has a first protrusion 313 and a second protrusion 312. The first protrusion 313 abuts against the B-side 112 of the frame 10, and the second protrusion 312 abuts against the side of the flange 12 opposite to the B-side 112. Specifically, the first protrusion 313 abuts against the B-side 112 of the short frame strip 102 of the frame 10, thereby limiting the short side of the photovoltaic module 1. The pressure block 40 abuts against the B-side 112 of the long frame strip 101 of the frame 10, thereby limiting the long side of the photovoltaic module 1. The second protrusion 312 abuts against both the flange 12 of the short frame strip 102 and the flange 12 of the long frame strip 101. Further, the base 31 has multiple first protrusions 313 and multiple second protrusions 312 for abutting and cooperating with different photovoltaic modules 1 respectively.

[0061] Further, see Figure 6 The number of mounting brackets 30 is also multiple. For example, in this embodiment, each photovoltaic module 1 is equipped with four mounting brackets 30, and each mounting bracket 30 supports the four corners of the photovoltaic module 1. Furthermore, two corners of two adjacent photovoltaic modules 1 can share one mounting bracket 30, thereby saving the number of mounting brackets 30 and reducing costs.

[0062] See Figure 9 as well as Figure 10 In another embodiment, the mounting bracket 30 includes 10 purlins 33 and threaded connectors 35. Exemplarily, the purlins 33 extend along the short side of the photovoltaic module 1, and each purlin 33 has a mounting groove 331. One end of the threaded connector 35 is confined within the mounting groove 331, and the other end is connected to the flange 12. Specifically, the threaded connector 35 is a bolt. The stud of the bolt passes through the connecting hole 121 of the flange 12 and extends into the mounting groove 331, where it is connected to a limiting block 36. The width of the limiting block 36 is greater than the opening of the mounting groove 331. The bolt head engages with the flange 12, thereby fixing the photovoltaic module 1 to the purlins 33. The pressure block 40 can also be fixed to the purlins 33 using the same bolts, which will not be described in detail here.

[0063] Specifically, there are two purlins 33, which are connected to the two flanges 12 of the long frame 101 via threaded connectors 35. Furthermore, the mounting bracket 30 includes multiple support bars 34, which are spaced apart between the two purlins 33. The support bars 34 are used to support and cooperate with the photovoltaic module 1, thereby improving the installation stability of the photovoltaic module 1.

[0064] 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.

[0065] 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 frame (10), characterized in that, The frame (10) includes multiple frame strips, all of which are connected end to end and are used to jointly surround the edge of the laminate (20) of the photovoltaic module (1). Each frame strip includes: The frame body (11) has an A-side (111) and a C-side (113) arranged opposite to each other, and a B-side (112) connecting the A-side (111) and the C-side (113). Two flanges (12) are connected to the C surface (113) and extend in a direction away from the B surface (112). The two flanges (12) are located at the two ends of the C surface (113) respectively, and a hollow area (13) is formed between the two flanges (12). Among the two connected frame bars, the flange (12) of one frame bar is spliced ​​with the flange (12) of the other frame bar to form a mounting part for connecting the mounting bracket (30).

2. The frame (10) according to claim 1, characterized in that, The flange (12) has a connecting hole (121) for threaded connectors (35) to be inserted.

3. The frame (10) according to claim 1, characterized in that, Along the direction away from the B surface (112), the width of the flange (12) gradually decreases.

4. The frame (10) according to claim 1, characterized in that, The flange (12) includes a top edge (122), a first side edge (123) connected to one end of the top edge (122), and a second side edge (124) connected to the other end of the top edge (122). The top edge (122) is arranged parallel to the B surface (112). The first side edge (123) is closer to the hollow area (13) than the second side edge (124). The second side edge (124) is coplanar with the end face of the frame body (11).

5. The frame (10) according to claim 4, characterized in that, The first side (123) has a concave arc structure; and / or, the second side (124) is set at a 45° angle to the B surface (112).

6. A photovoltaic module (1), characterized in that, It includes a laminate (20) and a frame (10) according to any one of claims 1-5, the frame (10) being fitted onto the edge of the laminate (20).

7. A photovoltaic power generation system, characterized in that, include: The photovoltaic module (1) according to claim 6; Mounting bracket (30) is connected to the mounting part and is used to support the photovoltaic module (1). A pressure block (40) is connected to the mounting bracket (30), and the pressure block (40) abuts against the A side (111) and the B side (112) of the frame (10).

8. The photovoltaic power generation system according to claim 7, characterized in that, The mounting bracket (30) includes: The base (31) is supported and cooperated with the mounting part, and the pressure block (40) is detachably installed on the base (31); A support column (32) is connected to the base (31) and is used to support the base (31).

9. The photovoltaic power generation system according to claim 8, characterized in that, The base (31) is provided with a first protrusion (313) and a second protrusion (312). The first protrusion (313) abuts against the B-side (112) of the frame (10), and the second protrusion (312) abuts against the side of the flange (12) away from the B-side (112).

10. The photovoltaic power generation system according to claim 7, characterized in that, The mounting bracket (30) includes a purlin (33) and a threaded connector (35). The purlin (33) has a mounting groove (331). One end of the threaded connector (35) is located in the mounting groove (331), and the other end is connected to the flange (12).

Images