Combined photovoltaic frame and photovoltaic system thereof

Abstract

The utility model discloses a combined photovoltaic frame and a photovoltaic system thereof, the combined photovoltaic frame comprises a frame structure and a switching structure, the switching structure is separably connected to the frame structure, the frame structure is provided with an accommodating cavity and a clamping cavity, the accommodating cavity is connected with the switching structure along a first direction, and the clamping cavity clamps a photovoltaic laminated part along a second direction. The adapting structure comprises a base and an assembling part, the assembling part extends from the base to the containing cavity in the first direction, the containing cavity is matched with the assembling part, so that the adapting structure and the frame structure are mutually embedded, the assembling part comprises an expanding end and a connecting part, the connecting part is integrally connected with the base and the expanding end, and the expanding end expands and extends from the two sides of the connecting part in the second direction; the width of the expanding end in the second direction is larger than that of the connecting part in the second direction. According to the combined photovoltaic frame, the stability of the combined photovoltaic frame is improved through the detachable frame structure and the adapter structure, and the combined photovoltaic frame is connected with the purline to adapt to different installation modes and installation positions.

Description

Technical Field

[0001] This application relates to the field of photovoltaic frame installation technology, and in particular to a combined photovoltaic frame and its photovoltaic system. Background Technology

[0002] With the rapid development of the photovoltaic industry, the application scenarios of photovoltaic modules are becoming increasingly widespread, playing a vital role in everything from large-scale centralized power plants to small-scale distributed power generation systems. However, the numerous outdoor applications have placed new demands on the performance of photovoltaic frames. The primary function of the photovoltaic frame is to provide protection and support for the photovoltaic modules, ensuring stable operation under various environmental conditions. The frame secures the photovoltaic modules to their installation location, preventing displacement or damage due to external forces. It also bears the weight of the modules and potential additional loads, providing physical protection. Therefore, the photovoltaic frame is a key component affecting the performance of a photovoltaic system.

[0003] However, in practical use, these modular photovoltaic (PV) frames suffer from insufficient support for the modules and poor stability, thus affecting the overall stability of the PV system. Furthermore, these modular PV frames not only use a large number of mounting components during installation, increasing the load on the PV frame, but also have relatively fixed installation positions, resulting in assembly difficulties, limited adaptability to various application scenarios, and high manufacturing costs. On the other hand, these modular PV frames include glass mounting positions and cavities, and the installation width of the glass mounting positions when clamping the glass needs to match the width of the cavity to facilitate corner bracket connections, further restricting the application of PV frames in some scenarios. Summary of the Invention

[0004] One objective of this application is to provide a combined photovoltaic frame and its photovoltaic system, which effectively improves the support performance and structural stability of the combined photovoltaic frame through the frame structure and the transition structure, thereby increasing its applicability.

[0005] Another objective of this application is to provide a modular photovoltaic frame and photovoltaic system thereof, which improves the flexibility of assembly and thus adapts to a variety of application scenarios.

[0006] Another objective of this application is to provide a modular photovoltaic frame and its photovoltaic system, which is beneficial to improving the ease of assembly of the photovoltaic system, increasing assembly efficiency and reducing production costs.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: a combined photovoltaic frame, comprising a frame structure and a transition structure, wherein the transition structure is detachably connected to the frame structure, the frame structure is provided with a receiving cavity and a clamping cavity, the receiving cavity is connected to the transition structure along a first direction, and the clamping cavity clamps a photovoltaic laminate along a second direction, the transition structure includes a base and an assembly part, the assembly part extends from the base to the receiving cavity along the first direction, the receiving cavity is adapted to the assembly part, so that the transition structure and the frame structure can be fitted together, wherein the assembly part includes an enlarged end and a connecting part, the connecting part integrally connects the base and the enlarged end, and the width of the enlarged end along the second direction is greater than the width of the connecting part along the second direction.

[0008] In some embodiments, the base has a cavity, which is formed in the middle of the base along a third direction, and the width of the cavity along the second direction is smaller than the width of the clamping cavity along the second direction.

[0009] In some embodiments, the receiving cavity has an opening area and a limiting area. The opening area is located on the side closer to the transition structure, and the limiting area is located on the side farther from the transition structure. The inner diameter of the limiting area along the second direction is larger than the inner diameter of the opening area along the second direction.

[0010] The enlarged end is adapted to extend from the connecting portion to the limiting area, so that the mounting portion of the adapter structure is engaged with the receiving cavity of the frame structure.

[0011] In some embodiments, the frame structure includes a clamping portion and a limiting portion. The clamping portion is adapted to clamp a photovoltaic laminate. The limiting portion extends integrally from both sides of the clamping portion. The receiving cavity is formed in the limiting portion. When the assembly portion is engaged with the receiving cavity, the lower surface of the limiting portion and the upper surface of the base are in contact.

[0012] In some embodiments, the limiting portion has at least one groove on the side near the adapter structure, and the base has at least one protrusion on the side near the frame structure, the protrusion extending from the base to the groove along a first direction.

[0013] In some embodiments, the clamping portion includes a side and a main body, the main body integrally extending from the upper end of the side towards the photovoltaic laminate, and the clamping cavity formed between the side and the main body; the main body is provided with a protrusion and an extension along a first direction, the protrusion and the extension being spaced apart and extending towards the photovoltaic laminate; wherein, two of the protrusions are provided on both sides of the assembly portion, and two of the grooves are provided on both sides of the limiting portion.

[0014] In some embodiments, the base has a flat portion at one end away from the frame structure, the flat portion extending from the bottom of the base toward the photovoltaic laminate, and the flat portion being connected to the purlin by fasteners; the base has a first mounting hole and a second mounting hole, the cavity communicating with the first mounting hole and the second mounting hole along a first direction, the first mounting hole being closer to the frame structure than the second mounting hole, and the adapter structure being fixedly connected to the frame structure by fasteners passing through the first mounting hole and the second mounting hole.

[0015] To achieve the above objectives, the technical solution adopted in this application is: a photovoltaic system, comprising:

[0016] Photovoltaic laminates;

[0017] The combined photovoltaic frame as described above is suitable for clamping the photovoltaic laminate.

[0018] In some embodiments, the photovoltaic system further includes a reinforcing corner bracket, the reinforcing corner bracket including mutually perpendicular horizontal edges that extend to the limiting area at the corner of the combined photovoltaic frame, thereby allowing the reinforcing corner bracket to be interference-fitted into the frame structure.

[0019] In some embodiments, the photovoltaic system further includes a bracket connector having mounting holes adapted to allow fasteners to pass through, thereby enabling the combined photovoltaic frame, the bracket connector, and the purlins to be interconnected, wherein the reinforcing corner bracket is a thin-film structure.

[0020] Compared with the prior art, the beneficial effects of this application are as follows:

[0021] (1) The interlocking and detachable frame structure and adapter structure provided in this application can better increase the structural stability and support stability of the combined photovoltaic frame, further maintain good stability when the photovoltaic system is used, and the installation position can be moved during assembly to adapt to different installation methods, making it convenient to install in various application scenarios.

[0022] (2) This application does not require the width of the cavity of the adapter structure and the clamping cavity of the frame structure to be equal, and does not require the cavity to connect the reinforcing corner bracket. The thin-plate reinforcing corner bracket is installed on the frame structure with an interference fit, which helps to save materials and save costs.

[0023] (3) The bracket connector provided in this application connects the combined photovoltaic frame and purlins, which helps to reduce the amount of assembly materials used, reduce the assembly precision requirements during assembly, improve the ease of assembly, and thus reduce the production cost of the photovoltaic system and improve economic benefits. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a combined photovoltaic frame according to some embodiments of this application.

[0025] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0026] Figure 3 This is a schematic diagram of the adapter structure of some embodiments of this application.

[0027] Figure 4 This is a schematic diagram of the border structure of some embodiments of this application.

[0028] Figure 5 This is a front sectional view of a combined photovoltaic frame according to some embodiments of this application.

[0029] Figure 6 This is a schematic diagram of the structure of a combined photovoltaic frame according to some other embodiments of this application.

[0030] Figure 7 This is a schematic diagram of the structure of a combined photovoltaic frame according to some other embodiments of this application.

[0031] Figure 8 yes Figure 7 A magnified view of a section at point B.

[0032] Figure 9 This is a schematic diagram of the structure of a photovoltaic system according to some embodiments of this application.

[0033] Figure 10 This is a top view of a photovoltaic system according to some embodiments of this application.

[0034] Figure 11 This is a perspective cross-sectional view of a combined photovoltaic frame according to some other embodiments of this application.

[0035] Figure 12 This is a schematic diagram of the structure of a photovoltaic system according to some other embodiments of this application.

[0036] In the diagram: 1. Photovoltaic system; 2. Modular photovoltaic frame; 3. Photovoltaic laminate; 10. Frame structure; 11. Clamping part; 110. Receiving cavity; 111. Opening area; 112. Limiting area; 12. Main body; 120. Clamping cavity; 121. Extension; 122. Protrusion; 13. Side; 14. Reinforcing corner bracket; 141. Horizontal edge; 15. Groove; 16. Limiting part; 20. Adapter structure; 200, Base; 201, First sidewall; 202, Second sidewall; 203, Third sidewall; 204, Fourth sidewall; 210, First mounting hole; 211, Second mounting hole; 22, Assembly part; 221, Connecting part; 222, Enlarged end; 23, Flat part; 24, Through hole; 25, Protrusion; 26, Cavity; 30, Bracket connector; 31, Assembly hole; 40, Purlin; 50, Fastener. Detailed Implementation

[0037] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0038] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. They should not be construed as limiting the specific protection scope of this application.

[0039] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0040] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0041] To achieve the above objectives, such as Figures 1-12As shown, the technical solution adopted in this application is as follows: a combined photovoltaic frame 2, including a frame structure 10 and a transition structure 20. The transition structure 20 is detachably connected to the frame structure 10. The frame structure 10 is provided with a receiving cavity 110 and a clamping cavity 120. The receiving cavity 110 is connected to the transition structure 20 along a first direction, and the clamping cavity 120 clamps the photovoltaic laminate 3 along a second direction. The transition structure 20 includes a base 200 and an assembly part 22. The assembly part 22 extends from the base 200 to the receiving cavity 110 along the first direction. The receiving cavity 110 is adapted to the assembly part 22 so that the transition structure 20 and the frame structure 10 can be fitted together. The assembly part 22 includes an enlarged end 222 and a connecting part 221. The connecting part 221 integrally connects the base 200 and the enlarged end 222. The width of the enlarged end 222 along the second direction is greater than the width of the connecting part 221 along the second direction. By providing a wider enlarged end 222 and a narrower connecting part 221, the assembly part 22 is less prone to slippage when installed in the receiving cavity 110, which helps to improve structural stability.

[0042] Wherein, the first direction is the height direction of photovoltaic system 1, the second direction is the length direction of photovoltaic system 1, and the third direction is the width direction of photovoltaic system 1. It can be understood that the setting of this coordinate system can be flexibly set according to actual needs, and there are no restrictions here.

[0043] The detachable connection between the frame structure 10 and the adapter structure 20 effectively increases the structural and support stability of the combined photovoltaic frame 2, further maintaining good operational stability during the use of the photovoltaic system 1. Since the adapter structure 20 is detachably connected to the frame structure 10, its position can be adjusted during assembly, allowing for the movement of the photovoltaic system 1 and purlin 40 before fixing, adapting to different installation methods and facilitating installation in various application scenarios, thus improving installation flexibility and expanding applicability. In related technologies, the use of an integrated photovoltaic frame results in a relatively fixed connection position between the photovoltaic system 1 and purlin 40, making flexible adjustment of the installation position difficult, further reducing the adaptability of the photovoltaic system 1 to different installation methods and positions, and lowering performance. It is worth noting that the integrated photovoltaic frame in related technologies requires additional mounting components for fixing when connected to the purlin 40, increasing production costs. It is understandable that, since this application adopts a detachable frame structure 10 and a connecting structure 20, the use of additional installation components can be reduced when installing glass and photovoltaic laminate 3, thereby reducing the load pressure on the combined photovoltaic frame 2, reducing production costs, and further improving installation convenience.

[0044] In some embodiments, such as Figure 2 and Figure 4 As shown, the base 200 has a cavity 26, which is formed in the middle of the base 200 along a third direction. The width of the cavity 26 along the second direction is smaller than the width of the clamping cavity 120 along the second direction. It is understood that in related combined photovoltaic frames, the width of the clamping cavity 120 along the second direction needs to be consistent with the width of the cavity 26 along the second direction. This is because the reinforcing corner bracket 14 is often placed inside the cavity 26 to connect the frame structures 10 in different directions, thereby increasing the material and manufacturing cost, and further reducing economic efficiency. However, this application uses a detachable frame structure 10 and a connecting structure 20. The width of the cavity 26 along the second direction can be smaller than the width of the clamping cavity 120 along the second direction, and the thin-film reinforcing corner bracket 14 can be placed within the limiting area 112, further reducing the raw materials required for manufacturing and increasing economic efficiency.

[0045] In some embodiments, such as Figure 4 As shown, the receiving cavity 110 has an opening area 111 and a limiting area 112. The opening area 111 is located near the transition structure 20, and the limiting area 112 is located away from the transition structure 20. The inner diameter of the limiting area 112 along the second direction is larger than the inner diameter of the opening area 111 along the second direction. The enlarged end 222 is adapted to extend from the connecting portion 221 to the limiting area 112, allowing the assembly portion 22 of the transition structure 20 to engage with the receiving cavity 110 of the frame structure 10. It is understood that by providing the limiting area 112 and the opening area 111 corresponding to the enlarged end 222 and the connecting portion 221 in the receiving cavity 110, the tightness of the connection is improved, further enhancing the structural connection strength. Simultaneously, since the assembly portion 22 is shape-fitted to the receiving cavity 110, the ease of assembly is increased, reducing assembly difficulty.

[0046] In some embodiments, the frame structure 10 includes a clamping portion 11 and a limiting portion 16. The clamping portion 11 is adapted to clamp the photovoltaic laminate 3, and the limiting portion 16 extends integrally from both sides of the clamping portion 11. A receiving cavity 110 is formed in the limiting portion 16. When the assembly portion 22 is engaged with the receiving cavity 110, the lower surface of the limiting portion 16 and the upper surface of the base 200 are in contact. The interlocking frame structure 10 and the adapter structure 20 help reduce slippage during connection, further improving the connection stability between the adapter structure 20 and the frame structure 10, and enhancing the stability of the photovoltaic system 1 during use. Furthermore, since the surface-to-surface contact allows the adapter structure 20 to support the frame structure 10 more evenly, it can also increase the contact area between the adapter structure 20 and the frame structure 10, which helps improve the stability and connection strength during connection, further making the stress at the connection more uniform, thereby reducing stress concentration and damage risk at the connection, and thus reducing the maintenance cost of the photovoltaic system 1. It is understandable that, since the interlocking adapter structure 20 and the frame structure 10 have flexible assembly adaptability and stability, the application range and stability of the photovoltaic system 1 can be improved without using additional installation components, thereby enhancing its market competitiveness.

[0047] In some embodiments, such as Figure 5 and Figure 6 It is understood that the limiting part 16 has at least one groove 15 on the side near the adapter structure 20, and the base 200 has at least one protrusion 25 on the side near the frame structure 10. The protrusion 25 extends from the base 200 to the groove 15 along the first direction. The groove 15 and the protrusion 25 provided accordingly can play a positioning role, thereby improving the assembly accuracy and further reducing the assembly time during assembly.

[0048] In some embodiments, the clamping portion 11 includes a side 13 and a main body 12. The main body 12 extends integrally from the upper end of the side 13 toward the photovoltaic laminate 3, and a clamping cavity 120 is formed between the side 13 and the main body 12. The main body 12 has a protrusion 122 and an extension 121 protruding along a first direction. The protrusion 122 and the extension 121 are spaced apart and extend along the first direction toward the junction structure 20. Two protrusions 25 are respectively disposed on both sides of the assembly portion 22, and two grooves 15 are respectively disposed on both sides of the limiting portion 16. It is understood that the clamping cavity 120 facilitates the rapid installation and disassembly of the photovoltaic laminate 3, reduces installation time and labor costs, and further improves assembly efficiency. On the other hand, placing the photovoltaic laminate 3 in the clamping cavity 120 can reduce damage to the photovoltaic module during installation and transportation, and improve the service life and stability of the photovoltaic system 1. Furthermore, the corresponding provision of multiple protrusions 25 and grooves 15 for positioning is beneficial to improving assembly efficiency and assembly accuracy.

[0049] It is understandable that the protrusions 122 and extensions 121 enhance the tight fit with the edge of the photovoltaic laminate 3, thereby improving the stability of the photovoltaic laminate 3 clamped in the clamping cavity 120 during use. On the other hand, the photovoltaic laminate 3 will experience thermal expansion and contraction under high or low temperature environments. The protrusions 122 and extensions 121 can provide a certain elastic deformation space for the photovoltaic laminate 3, preventing the photovoltaic laminate 3 from cracking due to external pressure caused by expansion.

[0050] In some embodiments, such as Figure 6 and Figure 12 As shown, the base 200 has a flat portion 23 at the end away from the frame structure 10. The flat portion 23 extends from the bottom of the base 200 toward the photovoltaic laminate 3. The flat portion 23 is connected to the purlin 40 by a fastener 50. The base 200 has a first mounting hole 210 and a second mounting hole 211. The cavity 26 connects the first mounting hole 210 and the second mounting hole 211 along a first direction. The first mounting hole 210 is closer to the frame structure 10 than the second mounting hole 211. The adapter structure 20 is fixedly connected to the frame structure 10 by passing through the first mounting hole 210 and the second mounting hole 211. It can be understood that since the through hole 24 connected to the purlin 40 is located in the flat portion 23, the structural strength of the adapter structure 20 can be reduced when the through hole 24 is located in the main body of the adapter structure 20. On the other hand, since the flat portion 23 is formed by extending from the base 200, when the adapter structure 20 and the purlin 40 are connected by using fasteners 50 through the through hole 24, it is beneficial to adjust the assembly position of the photovoltaic system 1 to adapt to different installation methods.

[0051] Furthermore, since the adapter structure 20 is detachably installed on the frame structure 10, it is easy to move to meet installation requirements in different spaces. After determining the installation position, the first mounting hole 210 and the second mounting hole 211 allow the mounting component to pass through the second mounting hole 211, the cavity 26, and the first mounting hole 210, which facilitates the fixing of the adapter structure 20 to the frame structure 10, further improving the connection stability between the adapter structure 20 and the frame structure 10, and enhancing the stability of the photovoltaic system 1 during use.

[0052] In some embodiments, such as Figure 3It is understood that the base 200 includes a first sidewall 201 and a third sidewall 203 arranged along a first direction, and a second sidewall 202 and a fourth sidewall 204 arranged along a second direction. The first sidewall 201 is located near the frame structure 10, and the fourth sidewall 204 is located near the photovoltaic laminate 3. The first sidewall 201, the second sidewall 202, the third sidewall 203, and the fourth sidewall 204 are connected sequentially until the fourth sidewall 204 is connected to the first sidewall 201. It is understood that the cavity 26 formed by the first sidewall 201, the second sidewall 202, the third sidewall 203, and the fourth sidewall 204 helps to reduce the overall weight of the transition structure 20, thereby reducing production costs while enhancing the stability of the structural connection.

[0053] In some embodiments, a first mounting hole 210 is provided on the first sidewall 201 along the first direction, and a second mounting hole 211 is provided on the third sidewall 203 along the first direction, so that the mounting component passes through the second mounting hole 211, the cavity 26 and the first mounting hole 210 along the first direction, thereby further improving the connection stability between the adapter structure 20 and the frame structure 10.

[0054] To achieve the above objectives, the technical solution adopted in this application is: a photovoltaic system 1, comprising: a photovoltaic laminate 3;

[0055] And the above-mentioned combined photovoltaic frame 2, which is suitable for clamping photovoltaic laminate 3.

[0056] The combined photovoltaic frame 2 provided in this application has good structural strength and connection stability when used in photovoltaic system 1. It also helps to improve the service life and stability of photovoltaic system 1, while further shortening the assembly time and reducing production costs, thereby improving economic benefits.

[0057] In some embodiments, reference Figure 7 , Figure 8 as well as Figure 11As shown, the photovoltaic system 1 further includes a reinforcing corner bracket 14, which includes mutually perpendicular horizontal edges 141 extending to the limiting area 112 at the corner of the combined photovoltaic frame 2, allowing the reinforcing corner bracket 14 to be installed in an interference fit with the frame structure 10. The reinforcing corner bracket 14 connects the long and short sides of the frame structure 10, providing stable support and enhancing its structural strength, thus ensuring the stability of the photovoltaic system 1 in various environments. Notably, the interference fit installation method effectively withstands impact loads while reducing the need for additional mounting components, ensuring the stability of the connection structure. It is understood that the frame structure 10 in the prior art typically has six mounting adapter holes for mounting components, but the combined photovoltaic frame 2 provided in this application uses only two mounting adapter holes, thereby improving structural strength while reducing manufacturing difficulty and precision requirements, and increasing assembly convenience.

[0058] In some embodiments, such as Figure 7 , Figure 9 and Figure 10 It is understood that the photovoltaic system 1 further includes a bracket connector 30, which has mounting holes 31 suitable for fasteners 50 to pass through, thereby enabling the combined photovoltaic frame 2, the bracket connector 30, and the purlins 40 to be interconnected. The reinforcing corner bracket 14 is a thin-film structure. This improves the stability and usability of the connection structure, further enhancing the performance of the photovoltaic system 1.

[0059] In some embodiments, the reinforcing corner bracket 14 is in the form of a thin sheet. The thin sheet-like reinforcing corner bracket 14 has a lighter weight, facilitates installation and transportation, and improves installation and operational stability within the frame structure 10. It is worth noting that this application eliminates the need to set the widths of the cavity 26 of the adapter structure 20 and the clamping cavity 120 of the frame structure 10 to be equal, and eliminates the need to connect the reinforcing corner bracket 14 to the cavity 26. The thin sheet-like reinforcing corner bracket 14, with its interference fit, helps to reduce material usage and save costs.

[0060] In some embodiments, the bracket connector 30 has a stepped structure. One end of the bracket connector 30 with a mounting hole 31 is designated as a first end, and the other end as a second end. The second end has a protrusion extending along a first direction towards the side of the frame structure 10, for engaging with the frame structure 10 at the end away from the adapter structure 20. The first end is connected to the purlin 40 via a fastener 50 passing through the mounting hole 31. In this configuration, because the second end is subjected to a force away from the first end during connection, the connection performance between the first end and the frame structure 10 can be further enhanced without using additional mounting components, increasing the reliability of the connection.

[0061] In some embodiments, such as Figure 10 It is understood that the photovoltaic system 1 provided in this application has a single-side length of 80mm to 300mm. Specifically, the single-side length of the photovoltaic system 1 is 80mm, 120mm, 160mm, 200mm, 240mm, 280mm, or 300mm. More preferably, the longer side of the photovoltaic system 1 has a length of 200mm to 300mm, and the shorter side has a length of 80mm to 100mm. Through the detachable frame structure 10 and the adapter structure 20, the position of the bracket connection part 221 can be adjusted, further enabling the bracket connection part 221 to be connected to different positions on one side of the photovoltaic system 1. This facilitates adaptation to various installation methods and use at different installation points. Furthermore, since the photovoltaic system 1 can be flexibly installed at different installation points, multiple photovoltaic systems 1 provided in this application can be assembled and connected to form different sizes, further adapting to different usage locations and application scenarios, thereby improving the product's performance and competitiveness.

[0062] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A combined photovoltaic frame, characterized in that, The device includes a frame structure and a transition structure. The transition structure is detachably connected to the frame structure. The frame structure has a receiving cavity and a clamping cavity. The receiving cavity is connected to the transition structure along a first direction, and the clamping cavity clamps the photovoltaic laminate along a second direction. The transition structure includes a base and an assembly part. The assembly part extends from the base to the receiving cavity along the first direction. The receiving cavity is adapted to the assembly part so that the transition structure and the frame structure can be interlocked. The assembly part includes an enlarged end and a connecting part. The connecting part integrally connects the base and the enlarged end. The enlarged end extends from both sides of the connecting part along the second direction, and the width of the enlarged end along the second direction is greater than the width of the connecting part along the second direction.

2. The combined photovoltaic frame according to claim 1, characterized in that, The base has a cavity, which is opened in the middle of the base along a third direction. The width of the cavity along the second direction is smaller than the width of the clamping cavity along the second direction.

3. The combined photovoltaic frame according to claim 2, characterized in that, The receiving cavity has an opening area and a limiting area. The opening area is located on the side closer to the transition structure, and the limiting area is located on the side farther from the transition structure. The inner diameter of the limiting area along the second direction is larger than the inner diameter of the opening area along the second direction. The enlarged end is adapted to extend from the connecting portion to the limiting area, so that the mounting portion of the adapter structure is engaged with the receiving cavity of the frame structure.

4. The combined photovoltaic frame according to claim 2, characterized in that, The frame structure includes a clamping part and a limiting part. The clamping part is adapted to clamp the photovoltaic laminate. The limiting part extends integrally from both sides of the clamping part. The receiving cavity is formed in the limiting part. When the assembly part is engaged with the receiving cavity, the lower surface of the limiting part and the upper surface of the base are in contact.

5. The combined photovoltaic frame according to claim 4, characterized in that, The limiting part has at least one groove on the side near the adapter structure, and the base has at least one protrusion on the side near the frame structure. The protrusion extends from the base to the groove along a first direction.

6. The combined photovoltaic frame according to claim 5, characterized in that, The clamping part includes a side and a main body. The main body extends integrally from the upper end of the side towards the photovoltaic laminate. The clamping cavity is formed between the side and the main body. The main body is provided with a protrusion and an extension along a first direction. The protrusion and the extension are spaced apart and extend towards the photovoltaic laminate. Two of the protrusions are provided on both sides of the assembly part, and two grooves are provided on both sides of the limiting part.

7. The combined photovoltaic frame according to any one of claims 2-6, characterized in that, The base has a flat portion at one end away from the frame structure. The flat portion extends from the bottom of the base toward the photovoltaic laminate and is connected to the purlin by fasteners. The base has a first mounting hole and a second mounting hole. The cavity connects the first mounting hole and the second mounting hole along a first direction. The first mounting hole is closer to the frame structure than the second mounting hole. The adapter structure and the frame structure are fixedly connected by fasteners passing through the first mounting hole and the second mounting hole.

8. A photovoltaic system, characterized in that, include: Photovoltaic laminates; The combined photovoltaic frame according to any one of claims 1-7 is suitable for clamping the photovoltaic laminate.

9. The photovoltaic system according to claim 8, characterized in that, The photovoltaic system further includes a reinforcing corner bracket, which includes mutually perpendicular horizontal edges that extend to the limiting area at the corner of the combined photovoltaic frame, thereby allowing the reinforcing corner bracket to be installed in an interference fit with the frame structure.

10. The photovoltaic system according to claim 9, characterized in that, The photovoltaic system further includes a bracket connector with mounting holes adapted to allow fasteners to pass through, thereby connecting the combined photovoltaic frame, the bracket connector, and the purlins to each other, wherein the reinforcing corner bracket is a thin-film structure.

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