Edge frame, corner post, photovoltaic module, and photovoltaic system

Abstract

The present disclosure relates to a kind of frame, corner code, photovoltaic module and photovoltaic system, the frame, comprising: first frame body, the first frame body includes first chamber and second chamber, the first chamber is used to accommodate the first end of corner code, the second chamber is provided with the via for the wire harness in first direction.The structure that the frame only includes one accommodating cavity matched with corner code in the related art, the first chamber is accommodated by the second chamber, the via for the wire harness is set, so that when multiple photovoltaic modules are connected in series, the connecting wire harness in adjacent photovoltaic module can be conveniently routed through the via, the length of wire harness exposed outside is reduced, the risk of excessive aging failure of connector is reduced, and the stability of photovoltaic power generation is improved.

Description

Technical Field

[0001] This disclosure relates to the field of photovoltaic power generation technology, specifically to a frame, corner code, photovoltaic module, and photovoltaic system. Background Technology

[0002] In related technologies, the frame of photovoltaic (PV) modules typically has receiving cavities that mate with corner brackets. When multiple PV modules are arranged in a matrix, adjacent PV modules need to be connected in series using wiring harnesses. The junction box of the PV module is located on the back of the laminate, and the wiring harness needs to be suspended on the surface of the PV module and pass around the adjacent frames of two PV modules before being connected via connectors. This wiring method not only blocks the light-receiving area of ​​the PV module, affecting its power generation efficiency, but the exposed wiring harness is also prone to aging and failure, thus affecting the stability of power generation. Utility Model Content

[0003] The purpose of this disclosure is to provide a frame, corner bracket, photovoltaic module, and photovoltaic system, wherein the frame facilitates wiring and solves problems in related technologies.

[0004] To achieve the above objectives, a first aspect of this disclosure provides a frame, comprising: a first frame body, the first frame body including a first chamber and a second chamber, the first chamber for accommodating a first end of a corner bracket, and the second chamber having a through hole in a first direction for allowing a wire harness to pass through.

[0005] Optionally, the first chamber and the second chamber are staggered in the second direction.

[0006] Optionally, the second chamber is used to accommodate the wire harness and / or connectors connected to the wire harness.

[0007] Optionally, the frame includes two first frames spaced apart along a third direction and two second frames spaced apart along a second direction. The second frames include a third chamber for accommodating the second end of a corner bracket, so that adjacent first frames and second frames are connected by the corner bracket.

[0008] Optionally, the first frame or the second frame is provided with a receiving portion, which communicates with the through hole. The receiving portion is used to receive the junction box, and the through hole is configured to allow the wiring harness of the junction box and the connector connected to the wiring harness to pass through.

[0009] Optionally, the second frame includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged perpendicular to each other, the third chamber is disposed in the first connecting part, and the inner side of the first connecting part and the inner side of the second connecting part together form the receiving part.

[0010] Optionally, the length of the second frame is greater than that of the first frame.

[0011] A second aspect of this disclosure provides a corner code applied to the aforementioned frame, the corner code comprising a first end and a second end, the first end of the corner code being used to connect to a first chamber of a first frame, and the second end of the corner code being used to connect to a third chamber of a second frame.

[0012] This disclosure provides a photovoltaic module, including the aforementioned frame and corner brackets. The frame includes two first frames spaced apart along a third direction and two second frames spaced apart along a second direction, with adjacent first and second frames connected by the corner brackets.

[0013] The fourth aspect of this disclosure provides a photovoltaic system including the plurality of photovoltaic modules described above.

[0014] The above technical solution provides a frame including a first frame body, which includes a first chamber and a second chamber. The first chamber accommodates the first end of the corner bracket, and the second chamber has a through-hole for the wire harness to pass through in a first direction. Compared to the structure of related technologies where the frame only includes a single accommodating cavity for the corner bracket, this application uses a first chamber to accommodate the corner bracket and a second chamber to provide a through-hole for the wire harness to pass through. This facilitates the wiring of adjacent photovoltaic modules when multiple photovoltaic modules are connected in series, reducing the length of exposed wire harnesses, lowering the risk of connector failure due to excessive aging, and improving the stability of photovoltaic power generation.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a cross-sectional schematic diagram of the first frame provided in an exemplary embodiment of this disclosure.

[0018] Figure 2 This is a side view of the assembly of the first frame and the laminate provided in an exemplary embodiment of this disclosure.

[0019] Figure 3 This is a side view of the assembly of the first frame and corner bracket provided in an exemplary embodiment of this disclosure from another angle.

[0020] Figure 4 This is a side view of the assembly of the second frame and the laminate provided in an exemplary embodiment of this disclosure.

[0021] Figure 5 This is a front view schematic diagram of the corner code provided in an exemplary embodiment of this disclosure.

[0022] Figure 6 This is a front view of a photovoltaic module provided in an exemplary embodiment of this disclosure.

[0023] Figure 7 This is a partial schematic diagram of a photovoltaic module provided in an exemplary embodiment of this disclosure from a first angle.

[0024] Figure 8 This is a partial schematic diagram of a photovoltaic module provided in an exemplary embodiment of this disclosure from a second angle.

[0025] Figure 9 This is a partial schematic diagram of a photovoltaic module provided in an exemplary embodiment of this disclosure from a third angle.

[0026] Figure 10 This is a front view schematic diagram of a photovoltaic system provided in an exemplary embodiment of this disclosure.

[0027] Figure 11 This is a schematic diagram of the internal structure of a photovoltaic system provided in an exemplary embodiment of this disclosure.

[0028] Figure 12 This is a schematic diagram of the cross-section of the border in related technologies.

[0029] Figure 13 This is a schematic diagram of a photovoltaic system in related technologies.

[0030] Explanation of reference numerals in the attached figures

[0031] 1-First frame; 11-First chamber; 12-Second chamber; 13-Receiving slot; 2-Corner bracket; 21-First end; 22-Second end; 3-Through hole; 4-Second frame; 41-Third chamber; 42-First connecting part; 43-Second connecting part; 44-Fourth chamber; 5-Receiving part; 6-Junction box; 7-Wire harness; 8-Connector; 9-Laminated component; 100-Photovoltaic module; 101-First photovoltaic module; 102-Second photovoltaic module. Detailed Implementation

[0032] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0033] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the usage state of photovoltaic modules; for example, the front of the photovoltaic panel in a photovoltaic module is upper, and the back is lower. "Inner" and "outer" refer to the outline of the component itself. "First direction" can be referenced. Figure 7 In the X direction, the "second direction" can be referenced. Figure 7 In the Y direction, the "third-party direction" can be referenced. Figure 7 In the Z-direction, terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Furthermore, in the description referring to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0034] In related technologies, such as Figure 12 and Figure 13 As shown, the frames of photovoltaic (PV) modules in a photovoltaic (PV) system typically have receiving cavities that mate with corner brackets. When multiple PV modules are arranged in a matrix, adjacent PV modules need to be connected in series using wiring harnesses. The junction boxes of the PV modules are located on the back of the laminate, and the wiring harnesses need to be suspended on the surface of the PV modules and pass around the frames of two adjacent PV modules before being connected via connectors. This wiring method not only blocks the light-receiving area of ​​the PV modules, affecting their power generation efficiency, but the exposed wiring harnesses are also prone to aging and failure, thus affecting the stability of power generation.

[0035] To solve the above technical problems, such as Figures 1-4 As shown, the first aspect of this disclosure provides a frame, including: a first frame 1, the first frame 1 including a first chamber 11 and a second chamber 12, the first chamber 11 for accommodating the first end 21 of the corner bracket 2, and the second chamber 12 having a through hole 3 in a first direction X for allowing the wire harness 7 to pass through.

[0036] The above technical solution provides a frame including a first frame 1, which includes a first chamber 11 and a second chamber 12. The first chamber 11 accommodates the first end of the corner bracket 2, and the second chamber 12 has a through hole 3 for the wire harness 7 to pass through in a first direction. Compared with the structure of related technologies where the frame only includes a cavity that mates with the corner bracket, this application uses the first chamber 11 to accommodate the first end of the corner bracket 2 and the second chamber 12 to provide a through hole 3 for the wire harness 7 to pass through. This facilitates the wiring of the wire harness 7 in adjacent photovoltaic modules 100 when multiple photovoltaic modules 100 are connected in series, thereby reducing the wiring difficulty and the length of the exposed wire harness 7 when adjacent photovoltaic modules 100 are connected in series. This reduces the risk of excessive aging and failure of the wire harness 7 and improves the stability of photovoltaic power generation.

[0037] It is understandable that the aforementioned frame is used to support the laminate 9 of the photovoltaic module. For details of the photovoltaic module 100, please refer to... Figures 6-9 As shown, a junction box 6 is provided on the back of the laminate 9 in the photovoltaic module 100. Terminals are provided at both ends of the junction box 6. Each terminal is equipped with a wire harness 7 and a connector 8 connected to the wire harness 7. The frame may include two first frame bodies 1 spaced apart along a third direction and two second frame bodies 4 spaced apart along a second direction. Adjacent first frame bodies 1 and second frame bodies 4 are connected by corner brackets 2. Thus, the two first frame bodies 1, the two second frame bodies 4, and the multiple corner brackets 2 together form the frame.

[0038] It is understandable that the aforementioned frame is applied to photovoltaic modules 100. Multiple photovoltaic modules 100 are connected in series to form a photovoltaic matrix. The size of the frame in each photovoltaic module 100 can be the same. Two adjacent photovoltaic modules 100 have through holes 3 on one side that abuts and is fixed, and the center lines of the through holes 3 in the two photovoltaic modules 100 can be approximately collinear. Thus, when two photovoltaic modules 100 are connected in series, the wire harness 7 in each photovoltaic module 100 can selectively be connected to the connector 8 connected to the wire harness 7 through the through hole 3 of its own frame to realize the series connection of the two photovoltaic modules 100. At this time, the wire harness 7 and the connector 8 connected to the wire harness 7 are both shielded inside the frame, thereby avoiding the wire harness 7 and the connector 8 connected to the wire harness 7 from being exposed, reducing the risk of excessive aging and failure of the wire harness 7, and improving the stability of photovoltaic power generation.

[0039] In some feasible ways, such as Figure 1 and Figure 2 As shown, the first chamber 11 and the second chamber 12 are staggered in the second direction, and the first direction can be referenced. Figure 1 In the X direction, the second direction can be referenced. Figure 1 In the Y direction, Figure 1 In this configuration, the first chamber 11 is located below the second chamber 12. Thus, the via 3 formed on the second chamber 12 is located above the first chamber 11. When the first chamber 11 is inserted into the first end 21 of the corner bracket 2, the via 3 can be avoided to prevent interference between the wire harness 7 and the corner bracket 2 during wiring, thereby optimizing the wiring path and facilitating the wiring of the wire harness 7.

[0040] Of course, in some implementations, to facilitate the processing and manufacturing of the frame and the connection between the frame and the corner bracket 2, the first chamber 11 and the second chamber 12 can be connected, so that the cross-section of the frame is approximately L-shaped. For example... Figure 1 As shown, the short side dimensions of the cross-section of the first chamber 11 and the short side dimensions of the cross-section of the second chamber 12 are approximately the same, while the long side dimension of the cross-section of the second chamber 12 is larger than the long side dimension of the cross-section of the first chamber 11. Furthermore, the overall cross-section of the frame is approximately L-shaped, which facilitates the insertion and mating of the wider corner bracket 2 with the first chamber 11, thereby improving the stability of the connection between the corner bracket 2 and the first chamber 11.

[0041] In some feasible embodiments, the space of the second chamber 12 can be utilized, and the second chamber 12 can also be configured to accommodate the wiring harness 7 and / or the connector 8 connected to the wiring harness 7. For example, the second chamber 12 can be configured to accommodate both the wiring harness 7 and the connector 8 simultaneously. In this way, during the transportation of the photovoltaic module 100, the wiring harness 7 and the connector 8 that mate with the photovoltaic module 100 can be temporarily placed in the second chamber 12, thereby preventing the wiring harness 7 or the connector 8 from being exposed outside the frame of the photovoltaic module 100 and avoiding collision damage to the wiring harness 7 and the connector 8.

[0042] When two photovoltaic modules 100 need to be connected in series, the wiring harness 7 and connector 8 can be removed from the second chamber 12. For example, the second chamber 12 is configured to accommodate the wiring harness 7 and connector 8. When two adjacent photovoltaic modules 100 are connected in series, it can be achieved through the wiring harness 7 and the connector 8 connected to the wiring harness 7. The first connection end of the wiring harness 7 is electrically connected to the laminate 9 in the photovoltaic module 100, and the second connection end of the wiring harness 7 is connected to the connector 8. The two corresponding connectors 8 in the two photovoltaic modules 100 are plugged in to realize the series connection of the two photovoltaic modules 100.

[0043] Of course, the structure described above, in which the second chamber 12 can simultaneously accommodate the wire harness 7 and the connector 8, is illustrative. In other embodiments, the second chamber 12 can also accommodate either the wire harness 7 or the connector 8 separately. Furthermore, to prevent the wire harness 7 and the connector 8 from swinging within the second chamber 12, a recess can be provided within the second chamber 12. This recess can limit the wire harness 7 and the connector 8, ensuring that they are arranged along a predetermined recess.

[0044] In some feasible embodiments, the first frame 1 or the second frame 4 may be provided with a receiving portion 5, which communicates with a through hole 3. The receiving portion 5 is used to accommodate a junction box 6, and the through hole 3 is configured to allow the wiring harness of the junction box 6 and the connector 8 connected to the wiring harness 7 to pass through. The receiving portion 5 provides accommodating space for the junction box 6, so that when two adjacent photovoltaic modules 100 are connected via connector 8, the wiring harness 7 and connector 8 in one photovoltaic module 100 can extend through the through hole 3 of its own frame to the receiving portion 5 in the other opposing photovoltaic module 100. This allows the connector 8 of the two photovoltaic modules 100 to be inserted into the receiving portion 5 of one of the photovoltaic modules 100. In this way, the wiring harness 7 and connector 8 are completely shielded, preventing them from being exposed outside the frame, further improving the stability of power generation from the photovoltaic module 100.

[0045] In some feasible ways, such as Figure 4As shown, the receiving part 5 can be provided in the second frame 4, and the through hole 3 is provided in the first frame 1. The second frame 4 includes a first connecting part 42 and a second connecting part 43. The first connecting part 42 and the second connecting part 43 are arranged perpendicular to each other. The cross-section of the second frame 4 is L-shaped. The first connecting part 42 is parallel to the Z direction, and the second connecting part 43 is parallel to the Y direction. The third chamber 41 of the first connecting part 42 is provided in the first connecting part 42. The inner side of the first connecting part 42 and the inner side of the second connecting part 43 together form the receiving part 5. Here, the inner side of the first connecting part 42 and the inner side of the second connecting part 43 refer to the side near the laminate 9, so that the junction box 6 on the back of the laminate 9 is accommodated in the receiving part 5. Thus, when two photovoltaic modules 100 are connected in series, the wiring harness 7 and the connector 8 connected to the wiring harness 7 in the two photovoltaic modules 100 can be placed into the receiving part 5 of the second frame 4, avoiding the wiring harness 7 and connector 8 being exposed outside the frame, and further improving the stability of the photovoltaic module 100 power generation.

[0046] Among the feasible methods, you can refer to Figure 6 The frame is constructed as a long rectangular frame, with the second frame 4 being longer than the first frame 1; that is, the second frame 4 is the long frame, and the first frame 1 is the short frame. The receiving portions 5 of multiple photovoltaic modules 100 are all located within the long frame, and the long frames with receiving portions 5 in multiple photovoltaic modules 100 are located on the same side, facilitating the connection of adjacent photovoltaic modules 100 via wiring harnesses 7. Furthermore, placing the receiving portions 5 within the long frame facilitates the wiring of the wiring harnesses 7 within the photovoltaic modules 100; that is, the busbars of the photovoltaic panels in the laminate 9 can be easily connected to the junction box 6 at the edge of the long frame, reducing the length and intersections of internal wiring, lowering resistance loss, and improving power generation efficiency. Of course, the long frame provides better support and fixation for the wiring harnesses 7, reducing strain and deformation caused by the weight of the wiring harnesses, wind, and other external forces.

[0047] Of course, it is understood that the structure of the above-mentioned receiving part 5 located on the second frame 4 is schematic. In other embodiments, it can be selected according to the specific working conditions. For example, the receiving part 5 can also be located on the first frame 1.

[0048] It is understandable that, in order to facilitate the manufacture of the frame, the cross-sections of the first frame 1 and the second frame 4 can be the same. The second frame 4 can also include a fourth chamber 44 corresponding to the second chamber 12 in the first frame 1. A receiving groove is provided above the fourth chamber 44. When the receiving part 5 is located in the second frame 4, the through hole 3 is located in the second chamber 12 of the first frame 1, so that the junction box 6 of the laminate 9 in the photovoltaic module 100 can be located in the receiving part 5 of the second frame 4. The first connecting end of the wire harness 7 is connected to the junction box 6, and the second connecting end of the wire harness 7 is connected to the connector 8. The wire harness 7 and the connector 8 pass through the through hole 3 of the first frame 1 and are connected to the connector 8 in the adjacent photovoltaic module.

[0049] like Figure 5 As shown, a second aspect of this disclosure provides a corner bracket 2, including a first end 21 and a second end 22. The first end 21 of the corner bracket 2 is connected to the first chamber 11 of the first frame 1, and the second end 22 of the corner bracket 2 is connected to the third chamber 41 of the second frame 4. The corner bracket 2 has an L-shaped cross-section, and the first end 21 and the second end 22 of the corner bracket 2 have equal thicknesses, so that the heights of the first chamber 11 of the first frame 1 and the third chamber 41 of the second frame 4 are approximately the same. This allows the via 3 to be located above the first chamber 11 and the third chamber 41, thereby preventing the corner bracket 2 from interfering with the wiring of the wire harness 7.

[0050] Compared to corner codes in related technologies, the corner code structure in existing technologies is as follows: Figure 12 As shown, the corner bracket 2 provided in this embodiment has a relatively small thickness. In order to make the connection between the first frame 1 and the second frame 4 more stable, the width of the corner bracket 2 can be appropriately increased, so that the first end 21 of the corner bracket 2 and the first chamber 11 and the second end 22 of the corner bracket 2 and the third chamber 41 have sufficient contact area, thereby improving the stability of the connection between the corner bracket 2 and the first frame 1 and the second frame 4.

[0051] Of course, to reduce the weight of corner bracket 2, multiple weight-reducing holes can be provided on corner bracket 2. The first end 21 and the second end 22 of corner bracket 2 can be integrally formed, or the first end 21 and the second end 22 of corner bracket 2 can be formed separately.

[0052] like Figures 6-9 As shown, the third aspect of this disclosure provides a photovoltaic module 100, including the aforementioned frame and the aforementioned corner bracket 2, wherein the frame may include two first frame bodies 1 spaced apart along a third direction and two second frame bodies 4 spaced apart along a second direction, and adjacent first frame bodies 1 and second frame bodies 4 are connected by corner bracket 2.

[0053] It is understood that the photovoltaic module 100 may also include a laminate 9, with a junction box 6 on the back of the laminate 9. Terminals are provided at both ends of the junction box 6, and each terminal is provided with a wire harness 7 and a connector 8 connected to the wire harness 7. A receiving groove 13 is also provided on the upper edge of the first frame 1 and the second frame 4. The receiving groove 13 engages with the edge of the laminate 9 to fix the laminate 9 via the frame. The aforementioned laminate 9 includes a photovoltaic panel, which may include multiple battery string groups arranged at intervals and connected in series. Each battery string group includes at least two parallel-connected... The battery strings are arranged such that each battery string includes multiple battery cells connected in series. The battery cells are connected in series to form a battery string, and then the battery strings are connected in parallel to form a battery string group. The arrangement of the battery string groups in series allows the positive and negative busbars of the battery string group to be located on one side of the frame and connected to the first connection end of the corresponding wire harness 7. The second connection end of the wire harness 7 passes through the through hole 3 so that the connector 8 connected to the second connection end of the wire harness 7 can be connected to the connector 8 in another photovoltaic module 100, thereby realizing the series connection of two adjacent photovoltaic modules.

[0054] It is understandable that in two adjacent photovoltaic modules 100, one of the two connectors 8 is a male terminal and the other is a female terminal used in conjunction with the male terminal. When the male terminal and the female terminal are plugged in and electrically connected, the two photovoltaic modules 100 are connected in series.

[0055] like Figure 10 and Figure 11 As shown, the fourth aspect of this disclosure provides a photovoltaic system including the photovoltaic module 100 described above. It is understood that the photovoltaic system includes all the beneficial effects of the photovoltaic module 100 described above, which will not be elaborated here.

[0056] In some feasible embodiments, at least two photovoltaic modules 100 are arranged side-by-side in an array, with the two frames of two adjacent photovoltaic modules 100 having through holes 3 abutting each other, so that one of the connectors 8 in the two photovoltaic modules 100 passes through the two through holes 3 and is inserted into the receiving portion 5 in the other photovoltaic module 100 to connect with the corresponding connector 8. Thus, when two photovoltaic modules 100 are connected in series, the positions of the two connectors 8 in the two adjacent photovoltaic modules 100 can be the receiving portion 5 in any photovoltaic module 100, or the space enclosed by the two through holes 3 at the two abutting frames. In this way, the junction box 6, connectors 8, and wiring harness 7 can all be located within the frames, reducing the amount of the junction box 6, connectors 8, and wiring harness 7 suspended and thus blocking the light-receiving area of ​​the photovoltaic module 100, thereby improving power generation efficiency.

[0057] In some feasible embodiments, two adjacent photovoltaic modules 100 include a first photovoltaic module 101 and a second photovoltaic module 102. A connector 8 in the first photovoltaic module 101 passes through a via 3 and extends into a receiving portion 5 in the second photovoltaic module 102, connecting with the connector 8 in the second photovoltaic module 102. Thus, when both the connector 8 and the junction box 6 are housed in the receiving portion 5 of the second photovoltaic module 102, the connector 8 and the wiring harness 7 are prevented from being exposed outside the first photovoltaic module 101 and the second photovoltaic module 102, thereby preventing excessive aging and failure of the connector 8 and the wiring harness 7 and improving the stability of photovoltaic power generation.

[0058] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0060] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A frame, characterized in that, include: A first frame, comprising a first chamber and a second chamber, wherein the first chamber is used to accommodate the first end of the corner bracket, and the second chamber is provided with a through hole in a first direction for the wire harness to pass through.

2. The frame according to claim 1, characterized in that, The first chamber and the second chamber are staggered in the second direction.

3. The frame according to claim 2, characterized in that, The second chamber is used to accommodate the wire harness and / or connectors connected to the wire harness.

4. The frame according to claim 1, characterized in that, The frame includes two first frames spaced apart along a third direction and two second frames spaced apart along a second direction. Each second frame includes a third chamber for accommodating the second end of a corner bracket, so that adjacent first and second frames can be connected via the corner bracket.

5. The frame according to claim 4, characterized in that, The first frame or the second frame is provided with a receiving portion, which communicates with the through hole. The receiving portion is used to receive the junction box, and the through hole is configured to allow the wiring harness of the junction box and the connector connected to the wiring harness to pass through.

6. The frame according to claim 5, characterized in that, The second frame includes a first connecting part and a second connecting part, which are arranged perpendicularly to each other. The third chamber is located in the first connecting part, and the inner side of the first connecting part and the inner side of the second connecting part together form the receiving part.

7. The frame according to claim 4, characterized in that, The length of the second frame is greater than that of the first frame.

8. A corner code, characterized in that, Applied to the frame according to any one of claims 1-7, the corner bracket includes a first end and a second end, the first end of the corner bracket is used to connect with a first chamber of a first frame, and the second end of the corner bracket is used to connect with a third chamber of a second frame.

9. A photovoltaic module, characterized in that, The frame includes the border as described in any one of claims 1-7 and the corner bracket as described in claim 8. The border includes two first frames spaced apart along a third direction and two second frames spaced apart along a second direction. Adjacent first frames and second frames are connected by the corner bracket.

10. A photovoltaic system, characterized in that, Includes the photovoltaic module as described in claim 9.

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