Photovoltaic frame, photovoltaic module and photovoltaic module system

Abstract

The utility model relates to a photovoltaic frame, a photovoltaic module and a photovoltaic module system.The photovoltaic frame comprises two photovoltaic frame units oppositely arranged on the two sides of a laminated piece, each photovoltaic frame unit comprises a main body part and a clamping part connected with the main body part, and the main body part is arranged in a plate shape; the clamping parts are located on the sides of the main body parts, the clamping parts and the main body parts define installation grooves which are used for supporting the edge parts of the laminated pieces and do not cover the upper surfaces of the laminated pieces, and the clamping parts of every two adjacent photovoltaic frame units are connected in a clamped mode so that every two adjacent laminated pieces can be connected. As the mounting groove does not cover the upper surface of the laminated part, namely, the mounting groove is not provided with an A edge, the area of the laminated part exposed to the sun is increased, rainwater, dust and other foreign matters are prevented from being accumulated between the A edge and the laminated part, the definition of the laminated part is not influenced, and the hot spot risk of the photovoltaic module is reduced. Meanwhile, the edge of the laminated piece is prevented from being in a water accumulation state for a long time, and the installation stability of the laminated piece and the photovoltaic frame unit is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a photovoltaic frame, a photovoltaic module and a photovoltaic module system. Background Art

[0002] Solar power generation is divided into solar thermal power generation and photovoltaic power generation. Solar photovoltaic power generation uses the photovoltaic effect at the interface of semiconductors to directly convert light energy into electrical energy. The key component of this technology is the laminate. Laminates are connected in series and then encapsulated to form large-area solar cell laminates. Adding a frame to the laminate effectively protects the laminate from environmental damage and facilitates assembly.

[0003] In the industry, side A of the frame is generally referred to as the top wall, side B as the outer side, and the integrally formed overhanging plate at the bottom of the frame as side C. Typically, the top of side A is approximately 3mm higher than the top surface of the laminate, which can easily cause water and dust accumulation in the gap between the laminate and side A, making the laminate difficult to clean. Uneven dust accumulation also increases the risk of hot spots in PV modules. Utility Model Content

[0004] Based on this, a photovoltaic frame, a photovoltaic module and a photovoltaic module system are provided. The setting of the photovoltaic frame unit improves the problem that the laminate is difficult to clean and the uneven dust accumulation increases the risk of hot spots in the photovoltaic module.

[0005] To this end, on the first aspect, an embodiment of the present application provides a photovoltaic frame, comprising two photovoltaic frame units relatively arranged on both sides of a laminate, the photovoltaic frame unit comprising a main body and a snap-fitting portion connected to the main body, the main body being in a plate-like shape, the snap-fitting portion being located on the side of the main body and being surrounded by the main body to form an installation groove for supporting the edge portion of the laminate and not covering the upper surface of the laminate, the snap-fitting portions of the two adjacent photovoltaic frame units being snap-fitted and connected to each other to connect the two adjacent laminates.

[0006] In one embodiment, the two engaging parts of two adjacent photovoltaic frame units include a first engaging part and a second engaging part, the first engaging part is provided with an engaging groove, and the second engaging part is provided with an engaging block matching the engaging groove.

[0007] In one embodiment, the opening of the engaging groove is away from the bottom surface of the main body; and the engaging block is arranged on a side of the engaging portion facing the bottom surface of the main body.

[0008] In one embodiment, there are at least two engaging grooves; and / or there are at least two engaging blocks.

[0009] In one embodiment, the height of the engaging portion is lower than that of the laminate or is flush with the laminate.

[0010] In one embodiment, the photovoltaic frame unit further includes a connecting portion, which is connected to a side of the main body away from the mounting groove, and a snap-fit ​​groove is provided at one end of the connecting portion, and the connecting portion is used to extend into the mounting opening of the purlin, and the snap-fit ​​groove is snap-fitted to the side wall of the purlin.

[0011] In a second aspect, an embodiment of the present application provides a photovoltaic assembly, comprising a laminate and a photovoltaic frame as described above assembled on an edge of the laminate.

[0012] In one embodiment, the laminate has an adjacent first side wall and a second side wall, the first side wall of the laminate extends into the mounting groove of the photovoltaic frame unit and is connected to the photovoltaic frame unit, and the second side wall is arranged in a stepped manner, and the steps between two adjacent laminates are engaged with each other.

[0013] In a third aspect, an embodiment of the present application provides a photovoltaic assembly system, which includes: a plurality of photovoltaic assemblies as described above, wherein the snap-fitting portions of the photovoltaic frame units of two adjacent photovoltaic assemblies in a first direction are snap-fitted and connected to each other, so that the two adjacent photovoltaic assemblies are connected.

[0014] In one embodiment, the system further includes a purlin, which is tubular and has a mounting opening on its side wall, wherein the connecting portion of the photovoltaic frame unit extends into the mounting opening and the snap-fit ​​groove of the connecting portion is snap-fitted to the side wall of the purlin; and / or two adjacent photovoltaic components in a second direction perpendicular to the first direction are connected to each other through the steps of the laminate.

[0015] According to the photovoltaic frame, photovoltaic module and photovoltaic module system provided by the embodiment of the present application, the photovoltaic frame includes two photovoltaic frame units relatively arranged on both sides of the laminate, the photovoltaic frame unit includes a main body and a clamping portion connected to the main body, the main body is arranged in a plate-shaped manner, the clamping portion is located on the side of the main body and is surrounded by the main body to form a mounting groove for supporting the edge portion of the laminate and not covering the upper surface of the laminate, the clamping portions of two adjacent photovoltaic frame units are mutually clamped and connected to connect the two adjacent laminates. Since the mounting groove does not cover the upper surface of the laminate, that is, the mounting groove does not have an A side, there is no A side blocking, which not only increases the area of ​​the laminate exposed to sunlight, but also avoids rainwater, dust and other foreign matter accumulating between the A side and the laminate, does not affect the clarity of the laminate, and reduces the risk of hot spots in the photovoltaic module. At the same time, it also avoids the edge of the laminate from being in a waterlogged state for a long time, thereby improving the stability of the laminate and the photovoltaic frame unit installation. In addition, the clamping portions between two adjacent photovoltaic frame units can be mutually clamped and connected to facilitate assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a photovoltaic module system provided in an embodiment of the present application is shown;

[0017] Figure 2 A schematic structural diagram of a laminate and a photovoltaic frame unit provided in an embodiment of the present application is shown;

[0018] Figure 3 A schematic structural diagram of a photovoltaic frame unit provided in an embodiment of the present application is shown;

[0019] Figure 4 A schematic structural diagram of a purlin provided in an embodiment of the present application is shown;

[0020] Figure 5 A schematic structural diagram of a laminate provided in an embodiment of the present application is shown.

[0021] Description of reference numerals:

[0022] 1. Laminate; 11. First side wall; 12. Second side wall; 2. Photovoltaic frame unit; 21. Main body; 22. First engaging portion; 221. Engaging groove; 23. Second engaging portion; 231. Engaging block; 24. Connecting portion; 241. Engaging groove; 25. Mounting groove; 3. Purlin; 31. Mounting opening. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0025] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes shall still fall within the scope of the technical contents disclosed in this utility model without affecting the efficacy and objectives that can be achieved by the present utility model.

[0026] Terms such as "upper," "lower," "left," "right," "center," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification to indicate positions or locations are based on those shown in the accompanying drawings and are intended solely for ease of description. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the industry, side A of the frame is generally referred to as the top wall, side B as the outer side, and the integrally formed overhanging plate at the bottom of the frame as side C. Typically, the top of side A is approximately 3mm higher than the top surface of laminate 1, creating a height difference between laminate 1 and side A. This can easily lead to water and dust accumulation in the gap between laminate 1 and side A, making it difficult to clean. Uneven dust accumulation also increases the risk of hot spots in photovoltaic modules.

[0028] To solve the above problems, refer to Figure 1 and Figure 2 , Figure 1 A schematic structural diagram of a photovoltaic module system provided in an embodiment of the present application is shown. Figure 2 A schematic structural diagram of a laminate and a photovoltaic frame unit provided in this application is shown.

[0029] The present application provides a photovoltaic frame, comprising two photovoltaic frame units 2 arranged on both sides of a laminate 1, the photovoltaic frame unit 2 comprising a main body 21 and a snap-fitting portion connected to the main body 21, the main body 21 being arranged in a plate shape, the snap-fitting portion being located on the side of the main body 21 and being surrounded by the main body 21 to form an installation groove 25 for supporting the edge portion of the laminate 1 and not covering the upper surface of the laminate 1, the snap-fitting portions of the two adjacent photovoltaic frame units 2 being snap-fitted and connected to each other to connect the two adjacent laminates 1.

[0030] It should be understood that the photovoltaic frame unit 2 is made of metal, such as aluminum alloy, and this application does not impose any restrictions. The photovoltaic frame unit 2 can be used to connect two adjacent laminates 1. Each laminate 1 is provided with at least two photovoltaic frame units 2. In one example, a laminate 1 is provided with a photovoltaic frame unit 2 on each of its two opposing sides. In another example, a laminate 1 is provided with a photovoltaic frame unit 2 on all four sides. Multiple photovoltaic frame units 2 can encapsulate multiple laminates 1, protecting the laminates 1 while also facilitating the installation of photovoltaic modules.

[0031] The photovoltaic frame unit 2 includes a main body 21 and a snap-fitting portion. The snap-fitting portion is fixedly connected to the main body 21. The connection method can be various methods such as welding or integral molding. In one example, the snap-fitting portion is made of the same material as the main body 21 and is integrally molded with the main body 21. The main body 21 is plate-shaped, and the snap-fitting portion is located to the side of the main body 21 and is arranged at an angle to the main body 21, so that the snap-fitting portion and the main body 21 are surrounded by a mounting groove 25. When installing the laminate 1, one side of the laminate 1 is extended into the mounting groove 25, so that the photovoltaic frame unit 2 does not cover the upper surface of the laminate 1. In order to improve the tightness of the installation between the laminate 1 and the photovoltaic frame unit, the angle between the snap-fitting portion and the main body 21 is 90°, that is, the installation groove 25 is "L"-shaped. When the laminate 1 is located in the installation groove 25, the bottom surface of the laminate 1 is in contact with the main body 21, and the side surface of the laminate 1 is in contact with the snap-fitting portion, thereby reducing the gap between the laminate 1 and the photovoltaic frame unit 2, preventing foreign matter from entering the gap between the laminate 1 and the photovoltaic frame unit 2, avoiding affecting the normal operation of the laminate 1, and also improving the stability of the connection between the laminate 1 and the photovoltaic frame unit 2.

[0032] During installation, the laminate 1 is placed in the installation groove 25 and installed with the photovoltaic frame unit 2 , and the engaging portions of two adjacent photovoltaic frame units 2 are engaged with each other, thereby connecting the two adjacent laminates 1 .

[0033] The mounting groove 25 of the present application is formed in an "L" shape by the engaging portion and the main body 21, so that the mounting groove 25 does not have an A-side. Therefore, the upper surface of the laminate 1 is not blocked by the A-side. This not only increases the area of ​​the laminate 1 exposed to sunlight, but also prevents rainwater, dust, and other foreign matter from accumulating between the A-side and the laminate 1, without affecting the clarity of the laminate 1 and reducing the risk of hot spots in the photovoltaic module. It also prevents the edge of the laminate 1 from being exposed to water for a long time, improving the stability of the installation of the laminate 1 and the photovoltaic frame unit 2.

[0034] Reference Figure 2 and Figure 3 , Figure 3 A schematic structural diagram of a photovoltaic frame unit provided in an embodiment of the present application is shown.

[0035] In some optional embodiments, the two engaging parts that engage two adjacent photovoltaic frame units 2 include a first engaging part 22 and a second engaging part 23 , wherein the first engaging part 22 is provided with an engaging groove 221 ; the second engaging part 23 is provided with an engaging block 231 that matches the engaging groove 221 .

[0036] The snap-fitting part of one of the two adjacent photovoltaic frame units 2 is a first snap-fitting part 22, which is provided with a snap-fitting groove 221; the snap-fitting part of the other photovoltaic frame unit 2 is a second snap-fitting part 23, which is provided with a snap-fitting block 231. When the snap-fitting block 231 extends into the snap-fitting groove 221, the two adjacent photovoltaic frame units 2 are connected.

[0037] The present application does not limit the opening direction of the engaging groove 221. The opening of the engaging groove 221 can be set upward. When the opening of the engaging groove 221 is upward, the engaging block 231 is set below the engaging portion; the opening of the engaging groove 221 can be set downward. At this time, the engaging block 231 is set above the engaging portion. The opening of the engaging groove 221 can also be set away from the side of the laminate 1. The engaging block 231 is set on the side of the engaging portion away from the laminate 1, thereby facilitating the engagement of the engaging block 231 with the engaging groove 221.

[0038] The present application does not limit the shapes of the engaging groove 221 and the engaging block 231. The engaging groove 221 may be a square groove, and the engaging block 231 may be a rectangular parallelepiped. The engaging groove 221 may also be a T-shaped groove, and the engaging block 231 may be a T-shaped block. During installation, the engaging block 231 is inserted from the end of the engaging groove 221 to prevent the engaging block 231 from detaching from the open end of the engaging groove 221. This improves the tightness and stability of the connection between the engaging block 231 and the engaging groove 221, and simultaneously improves the installation stability between two adjacent photovoltaic frame units 2.

[0039] In some optional embodiments, the opening of the engaging groove 221 faces away from the bottom surface of the main body 21; the engaging block 231 is disposed on the side of the engaging portion facing the bottom surface of the main body 21. During installation, the engaging block 231 can be placed into the engaging groove 221 from above. Compared to placing the engaging block 231 into the engaging groove 221 from below, this arrangement makes insertion easier and improves installation stability for the operator. Furthermore, compared to the case where the opening of the engaging groove 221 faces away from the laminate 1, the upward orientation of the engaging groove 221 further reduces the chance of the engaging block 231 detaching from the engaging groove 221, thereby improving the installation stability of two adjacent photovoltaic frame units 2.

[0040] In some optional embodiments, at least two engaging grooves 221 are provided, and / or at least two engaging blocks 231 are provided. The number of engaging grooves 221 can be two, three, or other numbers, and the number of engaging blocks 231 can also be two, three, or other numbers. The number of engaging blocks 231 is the same as the number of engaging grooves 221. The provision of at least two engaging grooves 221 and at least two engaging blocks 231 can improve the stability of the connection between two adjacent photovoltaic frame units 2. The at least two engaging grooves 221 are arranged at intervals along the length direction or width direction of the photovoltaic frame unit 2, and the at least two engaging blocks 231 are arranged at intervals along the length direction or width direction of the photovoltaic frame unit 2.

[0041] In some optional embodiments, the height of the snap-fit ​​portion is lower than the height of the laminate 1 or is flush with the laminate 1. When the laminate 1 is higher than the snap-fit ​​portion, rainwater will not accumulate at the edge of the laminate 1, and it is also easier to clean dust from the laminate 1. When the laminate 1 is flush with the snap-fit ​​portion, rainwater and dust will not accumulate at the edge of the laminate 1, and rainwater and dust will not accumulate at the photovoltaic frame unit 2, preventing rainwater and dust from affecting the photovoltaic frame unit 2, thereby improving the stability of the connection between the laminate 1 and the photovoltaic frame unit 2.

[0042] In one example, the height of the snap-fitting portion of one of the two adjacent photovoltaic frame units 2 is lower than the height of the snap-fitting portion of the other photovoltaic frame unit 2. When the two photovoltaic frame units 2 are connected, the two snap-fitting portions snap-fit ​​each other. At this time, the height of the laminate 1 is set flush with the height of the snap-fitting portion.

[0043] Reference Figure 1 、 Figure 3 and Figure 4 , Figure 4 A structural schematic diagram of a purlin provided in an embodiment of the present application is shown.

[0044] In some optional embodiments, the photovoltaic frame unit 2 further includes a connecting portion 24, which is connected to the side of the main body 21 away from the mounting groove 25. A snap-in groove 241 is provided at one end of the connecting portion 24. The connecting portion 24 is used to extend into the mounting opening 31 of the purlin 3, and the snap-in groove 241 is snap-fitted to the side wall of the purlin 3. The connecting portion 24 is connected to the main body 21, and the connection method can be welding or an integral molding setting, which is not limited in this application. In one example, the material of the connecting portion 24 is the same as that of the main body 21, and the connecting portion 24 is integrally molded with the main body 21. The connecting portion 24 can be in a block shape or in a tubular shape. In one example, the connecting portion 24 is in a tubular shape, that is, the connecting portion 24 is provided with an inner cavity, thereby reducing the weight of the connecting portion 24, saving materials and facilitating handling by the operator.

[0045] The purlin 3 can be installed on the roof or on the mounting frame. The purlin 3 is tubular, which can reduce the cost and weight of the purlin 3, save materials, and facilitate handling by operators. The purlin 3 has a mounting opening 31 formed on the peripheral side wall. The connecting portion 24 is provided with a snap-fitting groove 241, which is used to snap-fit ​​with the side wall of the purlin 3. During installation, the connecting portion 24 is placed in the mounting opening 31, and then the photovoltaic frame unit 2 is slid to snap-fit ​​the snap-fitting groove 241 with the side wall of the purlin 3, thereby connecting the connecting portion 24 to the purlin 3.

[0046] To ensure that the main body 21 fits snugly with the purlin 3, a snap-fit ​​groove 241 is located at the upper end of the connecting portion 24. The snap-fit ​​groove 241 is formed by the connecting portion 24 and the main body 21. When the snap-fit ​​groove 241 is engaged with the purlin 3, the main body 21 fits snugly with the purlin 3, thereby enhancing the support provided by the purlin 3 to the photovoltaic frame unit 2.

[0047] The present application also includes a photovoltaic assembly, including a laminate 1 and any one of the photovoltaic frames mentioned above assembled on the edge of the laminate, the photovoltaic frame including at least two photovoltaic frame units 2 and respectively arranged on opposite sides of the laminate 1. The photovoltaic frame includes two photovoltaic frame units 2 arranged on opposite sides of the laminate 1, the photovoltaic frame unit 2 includes a main body 21 and a snap-fit ​​portion connected to the main body 21, the main body 21 is arranged in a plate shape, the snap-fit ​​portion is located on the side of the main body 21 and is surrounded by the main body 21 to form a mounting groove 25 for supporting the edge portion of the laminate 1 and not covering the upper surface of the laminate 1, the snap-fit ​​portions of two adjacent photovoltaic frame units 2 are snap-fitted and connected to each other, so that the two adjacent laminates 1 are connected.

[0048] The mounting groove 25 of the present application is formed in an "L" shape by the engaging portion and the main body 21, so that the mounting groove 25 does not have an A-side. Therefore, the upper surface of the laminate 1 is not blocked by the A-side. This not only increases the area of ​​the laminate 1 exposed to sunlight, but also prevents rainwater, dust, and other foreign matter from accumulating between the A-side and the laminate 1, without affecting the clarity of the laminate 1 and reducing the risk of hot spots on the laminate 1. It also prevents the edge of the laminate 1 from being in a state of long-term water accumulation, thereby improving the stability of the installation of the laminate 1 and the photovoltaic frame unit 2.

[0049] Reference Figure 1-Figure 5 , Figure 5 A schematic structural diagram of a laminate provided in an embodiment of the present application is shown.

[0050] In some optional embodiments, the laminate 1 has adjacent first side walls 11 and second side walls 12, the first side wall 11 of the laminate 1 extends into the mounting groove 25 of the mounting assembly and is connected to the photovoltaic frame unit 2, and the second side wall 12 is arranged in a stepped manner, and the steps between the two adjacent laminates 1 are engaged with each other.

[0051] The laminate 1 includes two sheets of photovoltaic glass and a solar cell positioned between the two sheets of photovoltaic glass. The laminate 1 has a peripheral sidewall of a first sidewall 11 and a second sidewall 12. The first sidewall 11 and the second sidewall 12 are disposed adjacent to each other. The first sidewall 11 is flush with the second sidewall 12 to facilitate insertion of the laminate 1 into the mounting groove 25 and contact with the engaging portion. This reduces the gap between the laminate 1 and the photovoltaic frame unit 2, preventing foreign matter such as rainwater or dust from entering between the laminate 1 and the photovoltaic frame unit 2 without affecting the normal operation of the laminate 1. This also improves the stability of the installation between the laminate 1 and the photovoltaic frame unit 2. Due to the offset arrangement of the two sheets of photovoltaic glass, the second sidewall 12 is arranged in a stepped shape.

[0052] In order to reduce the use of photovoltaic frame units 2, two adjacent laminates 1 can be connected through steps. Compared with the flush abutment arrangement of the two laminates 1, the step arrangement can further improve the connection effect of the two adjacent laminates 1.

[0053] The present application also includes a photovoltaic assembly system, which includes multiple photovoltaic assemblies as described above, and the snap-fitting parts of the photovoltaic frame units 2 of two adjacent photovoltaic assemblies in a first direction are snap-fitted and connected to each other to connect the two adjacent photovoltaic assemblies.

[0054] In one example, in a first direction, the first sidewalls 11 of each laminate 1 in the photovoltaic module system are connected to the photovoltaic frame units 2 of another laminate 1 via the photovoltaic frame units 2. In a second direction, the steps of the second sidewalls 12 of each laminate 1 are engaged with the steps of the second sidewalls 12 of another laminate 1. The first direction is perpendicular to the second direction. That is, in the second direction perpendicular to the first direction, two adjacent photovoltaic modules are engaged with each other via the steps of the laminate 1.

[0055] In some optional embodiments, purlins 3 are further provided. Purlins 3 are tubular in shape and have mounting openings 31 defined in their sidewalls. The connection portion 24 of the photovoltaic frame unit 2 extends into the mounting openings 31, and the engaging grooves 241 of the connection portion 24 engage with the sidewalls of the purlins 3. Purlins 3 can be installed on a roof or mounting frame. The tubular shape of purlins 3 reduces their cost and weight, conserves materials, and facilitates handling. The mounting openings 31 are defined in the peripheral sidewalls of purlins 3. In one example, purlins 3 are square tubular in shape.

[0056] During installation, the connecting portion 24 is placed into the installation opening 31 , and then the photovoltaic frame unit 2 is slid to engage the engaging groove 241 with the side wall of the purlin 3 , thereby connecting the connecting portion 24 with the purlin 3 .

[0057] Furthermore, the mounting opening 31 is located on the upper side wall of the purlin 3 , and a plurality of mounting openings 31 are provided. The plurality of mounting openings 31 are spaced apart along the length direction of the purlin 3 to facilitate the installation of a plurality of photovoltaic frame units 2 .

[0058] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0059] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A photovoltaic frame, characterized in that: The invention comprises two photovoltaic frame units (2) arranged on two sides of a laminate (1), wherein the photovoltaic frame units (2) comprise a main body (21) and a snap-fitting portion connected to the main body (21), wherein the main body (21) is arranged in a plate shape, and the snap-fitting portion is located on the side of the main body (21) and is surrounded by the main body (21) to form a mounting groove (25) for supporting the edge portion of the laminate (1) and not covering the upper surface of the laminate (1), and the snap-fitting portions of two adjacent photovoltaic frame units (2) are snap-fitted and connected to each other, so that the two adjacent laminates (1) are connected.

2. The photovoltaic frame according to claim 1, characterized in that: The two engaging parts for engaging two adjacent photovoltaic frame units (2) comprise a first engaging part (22) and a second engaging part (23); the first engaging part (22) is provided with an engaging groove (221); and the second engaging part (23) is provided with an engaging block (231) matching the engaging groove (221).

3. The photovoltaic frame according to claim 2, characterized in that: The opening of the engaging groove (221) faces away from the bottom surface of the main body (21); and the engaging block (231) is arranged on a side of the engaging portion facing the bottom surface of the main body (21).

4. The photovoltaic frame according to claim 2, characterized in that: There are at least two engaging grooves (221); and / or there are at least two engaging blocks (231).

5. The photovoltaic frame according to claim 1, characterized in that: The height of the engaging portion is lower than the height of the laminate (1) or is flush with the laminate (1).

6. The photovoltaic frame according to claim 1, characterized in that: The photovoltaic frame unit (2) further comprises a connecting portion (24), the connecting portion (24) being connected to a side of the main body (21) facing away from the mounting groove (25), a snap-fitting groove (241) being provided at one end of the connecting portion (24), the connecting portion (24) being used to extend into the mounting opening (31) of the purlin (3), and the snap-fitting groove (241) being snap-fitted to the side wall of the purlin (3).

7. A photovoltaic module, characterized in that: The photovoltaic frame comprises a laminate (1) and an edge of the laminate (1) as described in any one of claims 1 to 6.

8. The photovoltaic module according to claim 7, characterized in that: The laminate (1) has adjacent first side walls (11) and second side walls (12); the first side walls (11) of the laminate (1) extend into the mounting groove (25) of the photovoltaic frame unit (2) and are connected to the photovoltaic frame unit (2); the second side walls (12) are arranged in steps, and the steps between the laminates (1) of two adjacent photovoltaic modules are engaged with each other.

9. A photovoltaic module system, characterized in that: The system comprises: a plurality of photovoltaic assemblies according to claim 7 or 8, wherein the snap-fitting portions of the photovoltaic frame units (2) of two adjacent photovoltaic assemblies in a first direction are snap-fitted and connected to each other, so that the two adjacent photovoltaic assemblies are connected.

10. The system according to claim 9, characterized in that The system further comprises a purlin (3), the purlin (3) being arranged in a tubular shape and having a mounting opening (31) formed on a side wall, the connecting portion (24) of the photovoltaic frame unit (2) extending into the mounting opening (31) and the engaging groove (241) of the connecting portion (24) engaging with the side wall of the purlin (3); and / or Two adjacent photovoltaic components in a second direction perpendicular to the first direction are connected to each other through the steps of the laminate (1).

Images