Frame unit, frame assembly and photovoltaic assembly

Abstract

The utility model provides a frame unit and a frame assembly. Each frame unit comprises a first structure and a second structure which are connected in the height direction of the frame unit; a first limiting piece is arranged on the surface of the side, away from the second structure, of the first structure. A second limiting piece is arranged on the surface of the side, away from the first structure, of the second structure. The first limiting pieces and the second limiting pieces are suitable for being connected with the second limiting pieces of the adjacent frame units in a matched mode when the multiple frame units are placed in a stacked mode, so that the side edges of any two adjacent frame units placed in a stacked mode are aligned. The frame unit provided by the utility model can improve the stability when the frame units are stacked, thereby improving the stacking quality of the photovoltaic module.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell packaging, in particular to a frame unit, a frame assembly and a photovoltaic assembly. Background Art

[0002] Photovoltaic power generation is an important way to utilize solar energy, which realizes the conversion from solar energy to electrical energy through the photoelectric effect. Photovoltaic modules are important structures for realizing the photoelectric effect. Since the power generation of a single photovoltaic module is limited, multiple photovoltaic modules are usually assembled into a power station for application. In practical applications, the packaging frame provides support strength for the photovoltaic module, enhances the stability of the photovoltaic module, and is easy to set up to form a power station.

[0003] At present, the main packaging frames of photovoltaic modules are aluminum frames and steel frames. The packaging frames mainly protect the edges of the packaging layer. Combined with silicone edging, the sealing of photovoltaic modules is enhanced, and the overall mechanical strength of photovoltaic modules is also improved. In addition to facilitating the installation and erection of photovoltaic modules, it also plays a certain protective role during the transportation of photovoltaic modules. Photovoltaic modules are usually stacked during transportation, but the conventional packaging frame design does not take into account the stacking limit of photovoltaic modules. In particular, as major photovoltaic module manufacturers continue to promote the cost reduction of packaging frames, the use of steel frames has greatly increased. Steel frames have a smoother surface and a narrower frame width than traditional aluminum frames, and are more prone to misalignment when stacked. Therefore, the handling and stacking of steel frames is an urgent problem to be solved in this field.

[0004] In the prior art, when multiple frame units are stacked, they are prone to slipping, which causes uneven force on the photovoltaic modules and causes damage. In addition, during transportation, multiple frame units are prone to misalignment. The stability of the frame units when stacked is poor, which reduces the stacking quality of the photovoltaic modules. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the frame units have poor stability when stacked, resulting in poor stacking quality of photovoltaic modules, thereby providing a frame unit, a frame module and a photovoltaic module.

[0006] The utility model provides a frame unit, comprising: a first structure and a second structure connected in the height direction of the frame unit; a first limiting piece is provided on a side surface of the first structure away from the second structure; a second limiting piece is provided on a side surface of the second structure away from the first structure; the first limiting piece and the second limiting piece are suitable for when a plurality of the frame units are stacked, the first limiting piece cooperates with and connects with the second limiting piece of an adjacent frame unit, so that the side edges of any two adjacent stacked frame units are aligned.

[0007] Optionally, when a plurality of the frame units are stacked and two adjacent frame units are in a limited position, the first limiting member and the second limiting member engage with each other, including: the first limiting member is protruding along the length direction or width direction of the frame unit; the second limiting member is recessed along the length direction or width direction of the frame unit; or, the first limiting member is recessed along the length direction or width direction of the frame unit; the second limiting member is protruding along the length direction or width direction of the frame unit.

[0008] Optionally, the first limiting member includes a plurality of first teeth; the plurality of first teeth are arranged at intervals; a first groove is formed between adjacent first teeth; the second limiting member includes a plurality of second teeth; the plurality of second teeth are arranged at intervals; a second groove is formed between adjacent second teeth; a plurality of the frame units are stacked, and for any two adjacent frame units, at least part of the first teeth are located in the second groove, and at least part of the second teeth are located in the first groove.

[0009] Optionally, the width of the first groove is 2mm-5mm; the width of the second groove is 2mm-5mm.

[0010] Optionally, the cross-section of the first tooth in a direction perpendicular to the length of the frame unit is in an arc shape; and the cross-section of the second tooth in a direction perpendicular to the length of the frame unit is in an arc shape.

[0011] Optionally, the height of the first tooth is 3mm-8mm, and the width of the first tooth is 5mm-15mm; the height of the second tooth is 3mm-8mm, and the width of the second tooth is 5mm-15mm.

[0012] Optionally, the roughness of the surface of the first tooth away from the first structure is 0.08Ra-0.16Ra; the roughness of the surface of the second tooth away from the second structure is 0.08Ra-0.16Ra.

[0013] Optionally, the first structure is provided with an installation groove, and the installation groove is used to accommodate at least the edge of the solar photovoltaic laminate; the installation groove has a first groove wall and a second groove wall arranged opposite to each other and a third groove wall connected to the first groove wall and the second groove wall; the first structure and the second structure share the second groove wall.

[0014] Optionally, the first limiting member is located on a side of the first groove wall facing away from the second groove wall.

[0015] Optionally, the first slot wall and the second slot wall are arranged in parallel in the height direction of the mounting slot and are respectively perpendicular to the plane where the third slot wall is located, and the third slot wall is parallel to the height direction of the mounting slot.

[0016] Optionally, the second structure is provided with a connecting groove, and the shape of the connecting groove in the vertical cross-sectional direction is a closed figure.

[0017] Optionally, the second limiting member is located on a side of the connecting groove away from the second groove wall.

[0018] The utility model provides a frame assembly, comprising: a plurality of frame units of the utility model; the frame assembly comprises at least two pairs of the frame units; two frame units in each pair of the frame units are arranged opposite to each other; a connecting piece, the connecting piece is suitable for being inserted into the second structure, and adjacent frame units are connected by the connecting piece.

[0019] The utility model also provides a photovoltaic assembly, comprising the frame assembly mentioned above, and also comprising a solar photovoltaic laminate surrounded by the frame assembly.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a frame unit, when multiple frame units are stacked, relative sliding occurs between the frame units to form stacking misalignment of the frame units, a first limiting piece is arranged on the surface of the side of the first structure away from the second structure; a second limiting piece is arranged on the surface of the side of the second structure away from the first structure; because the first limiting piece is matched and connected with the second limiting piece of the adjacent frame unit, the side edges of any two stacked frame units are aligned. In this way, the adjacent frame units can be limited, and the frame units can be prevented from slipping, and misaligned stacking can be avoided between the frame units, thereby improving the stability of the frame units when they are stacked.

[0022] Furthermore, the photovoltaic assembly includes a frame assembly and a solar photovoltaic laminate surrounded by the frame assembly. Since the frame assembly includes a plurality of frame units, a first structure of the frame unit is provided with an installation groove, and the installation groove is used to accommodate at least an edge of the solar photovoltaic laminate, while avoiding misaligned stacking between the frame units, adjacent solar photovoltaic laminates are aligned with each other, so that the solar photovoltaic laminate is evenly stressed, thereby improving the stacking quality of the photovoltaic assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a structural schematic diagram of a frame unit in Embodiment 1 of the utility model;

[0025] Figure 2 It is a longitudinal cross-sectional schematic diagram of a structure of a frame unit in Example 1 of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the frame units when they are stacked in Embodiment 1 of the present utility model;

[0027] Figure 4 It is a longitudinal cross-sectional schematic diagram of the frame units in Embodiment 1 of the present utility model when they are stacked;

[0028] Figure 5 This is another structural schematic diagram of the frame unit in Embodiment 1 of the utility model;

[0029] Figure 6 This is another structural schematic diagram of the frame unit in Embodiment 1 of the utility model;

[0030] Figure 7 It is an enlarged schematic diagram of two adjacent frame units in Example 1 of the utility model in the limited position;

[0031] Figure 8 This is a schematic diagram of the structure of the frame assembly in Example 2 of the utility model;

[0032] Description of reference numerals:

[0033] A-first structure; B-second structure; 1-first limiter; 2-second limiter; 3-first tooth; 4-second tooth; 5-first groove; 6-second groove; 7-installation groove; 8-first groove wall; 9-second groove wall; 10-third groove wall; 11-connecting groove; 100-frame unit; 1001-first frame unit; 1002-second frame unit; 1003-third frame unit; 1004-fourth frame unit; 200-solar photovoltaic laminate; 300-connecting piece. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1

[0037] This embodiment provides a frame unit 100, referring to Figure 1 and Figure 2 , comprising: a first structure A and a second structure B connected in the height direction of the frame unit 100; a first stopper 1 is provided on a side surface of the first structure A away from the second structure B; a second stopper 2 is provided on a side surface of the second structure B away from the first structure A; the first stopper 1 and the second stopper 2 are suitable for when a plurality of the frame units 100 are stacked, Figure 3 and Figure 4 The first limiting member 1 is connected with the second limiting member 2 of the adjacent frame unit 100 so that the side edges of any two adjacent frame units 100 stacked are aligned.

[0038] In this embodiment, when multiple frame units 100 are stacked, relative sliding occurs between the frame units 100 to form stacking misalignment of the frame units 100. A first stopper 1 is provided on the surface of the first structure A on the side away from the second structure B; a second stopper 2 is provided on the surface of the second structure B on the side away from the first structure A; since the first stopper 1 is matched and connected with the second stopper 2 of the adjacent frame unit 100, the side edges of any two stacked frame units 100 are aligned. In this way, the adjacent frame units 100 can be limited, and the frame units 100 can be prevented from slipping, and misaligned stacking can be avoided, so that the photovoltaic module is evenly stressed, thereby improving the stability of the frame units 100 when they are stacked.

[0039] Continue to refer Figure 1 , the first limiting member 1 is recessed along the length direction of the frame unit 100; the second limiting member 2 is protruded along the length direction of the frame unit 100; in another embodiment, the first limiting member is recessed along the width direction of the frame unit; the second limiting member is protruded along the width direction of the frame unit (not shown in the figure).

[0040] refer to Figure 5 , the first limiting member 1 is protruded along the length direction of the frame unit 100; Figure 6 The second limiting member 2 is recessed along the length direction of the frame unit 100 .

[0041] In another embodiment, the first limiting member is protrudingly disposed along the width direction of the frame unit; and the second limiting member is recessedly disposed along the width direction of the frame unit (not shown in the figure).

[0042] A plurality of the frame units 100 are stacked and placed, and when two adjacent frame units 100 are in the limiting position, the first limiting member 1 and the second limiting member 2 are engaged with each other. Figure 3 or Figure 4 The two frame units 100 are stacked and placed. When the frame unit 100 is in the limiting position, the first limiting member 1 and the second limiting member 2 are engaged with each other.

[0043] In one embodiment, the first limiting member 1 includes a plurality of first teeth 3, specifically, refer to Figure 5 The first stopper 1 includes a plurality of first teeth 3 arranged along the length direction of the frame unit 100; the plurality of first teeth 3 are arranged at intervals; a first groove 5 is formed between adjacent first teeth 3; the second stopper 2 includes a plurality of second teeth 4; specifically, refer to Figure 6 The second limiting member 2 includes a plurality of second teeth 4 arranged along the length direction of the frame unit 100; the plurality of second teeth 4 are arranged at intervals; and a second groove 6 is formed between adjacent second teeth 4.

[0044] When a plurality of the frame units 100 are stacked and any two adjacent frame units 100 are in the limit position, Figure 7 , at least part of the first teeth 3 is located in the second groove 6, and at least part of the second teeth 4 is located in the first groove 5. The first teeth 3 are located in the second groove 6, and the second teeth 4 are located in the first groove 5. The first teeth 3 and the second teeth 4 are engaged with each other, so that the first limiting member 1 and the second limiting member 2 are engaged with each other. When any two adjacent frame units 100 are stacked, the adjacent frame units 100 are limited to avoid misaligned stacking between the frame units 100, thereby improving the stability of the frame units 100 when they are stacked.

[0045] In one embodiment, preferably, the first stopper 1 is convexly arranged along the length direction or width direction of the frame unit 100; the second stopper 2 is concavely arranged along the length direction or width direction of the frame unit 100. Since the bottom surface of the second structure B contacts the ground, the second stopper 2 is concavely arranged on the side away from the second structure B, so as to ensure the contact area between the bottom surface of the second structure B and the ground, thereby ensuring the stability of the stacked frame units 100 and preventing the frame units 100 from sliding relative to the ground.

[0046] In one embodiment, the width of the first groove 5 is 2 mm-5 mm, for example, 2 mm, 3 mm or 5 mm. If the width of the first groove 5 is too large, the second teeth 4 and the first teeth 3 do not contact each other, and the limiting effect on the adjacent frame units 100 is weak; if the width of the first groove 5 is too small, the contact area between the second teeth 4 and the first teeth 3 is small, and the effect of improving the stability of the frame units 100 when stacked is weak.

[0047] In one embodiment, the width of the second groove 6 is 2 mm-5 mm, for example, 2 mm, 3 mm or 5 mm. If the width of the second groove 6 is too large, the first teeth 3 and the second teeth 4 do not contact each other, and the limiting effect on the adjacent frame units 100 is weak; if the width of the second groove 6 is too small, the contact area between the first teeth 3 and the second teeth 4 is small, and the effect of improving the stability of the frame units 100 when stacked is weak.

[0048] In one embodiment, the first teeth 3 have an arc-shaped cross section perpendicular to the length direction of the frame unit; the second teeth 4 have an arc-shaped cross section perpendicular to the length direction of the frame unit. The arc-shaped first teeth 3 and second teeth 4 can save effort when adjusting the misaligned frame unit 100.

[0049] In one embodiment, the height of the first teeth 3 is 3 mm to 8 mm, for example, 3 mm, 5 mm or 8 mm. If the height of the first teeth 3 is too large, the adjustment of the frame unit 100 at the misaligned position will have a smaller effect of saving effort; if the height of the first teeth 3 is too small, the limiting effect on the adjacent frame unit 100 will be weak.

[0050] In one embodiment, the height of the second teeth 4 is 3 mm to 8 mm, for example, 3 mm, 5 mm or 8 mm. If the height of the second teeth 4 is too large, the adjustment of the frame unit 100 at the misaligned position will have a less labor-saving effect; if the height of the second teeth 4 is too small, the limiting effect on the adjacent frame unit 100 will be weak.

[0051] In one embodiment, the width of the first teeth 3 is 5 mm-15 mm, for example, 5 mm, 10 mm or 15 mm. If the width of the first teeth 3 is too large, the area of ​​the first limiting member is large, making the first structure of the frame unit unsightly; if the width of the first teeth 3 is too small, the limiting effect on the adjacent frame unit 100 is weak.

[0052] In one embodiment, the width of the second teeth 4 is 5 mm-15 mm, for example, 5 mm, 10 mm or 15 mm. If the width of the second teeth 4 is too large, the area of ​​the second limiting member is large, making the second structure of the frame unit unsightly; if the width of the second teeth 4 is too small, the limiting effect on the adjacent frame unit 100 is weak.

[0053] In one embodiment, the roughness of the surface of the first teeth 3 away from the first structure A is 0.08Ra-0.16Ra, for example, 0.08Ra, 0.12Ra or 0.16Ra. If the roughness of the surface of the first teeth 3 away from the first structure A is too large, the adjustment of the frame unit 100 in the misaligned position will have a smaller effect of saving effort; if the roughness of the surface of the first teeth 3 away from the first structure A is too small, the limiting effect on the adjacent frame unit 100 will be weak.

[0054] In one embodiment, the roughness of the surface of the second teeth 4 away from the second structure B is 0.08Ra-0.16Ra, for example, 0.08Ra, 0.12Ra or 0.16Ra. If the roughness of the surface of the second teeth 4 away from the second structure B is too large, the effect of saving effort in adjusting the misaligned position of the frame unit 100 is small; if the roughness of the surface of the second teeth 4 away from the second structure B is too small, the limiting effect on the adjacent frame unit 100 is weak.

[0055] The first structure A defines an installation groove 7, which is used to accommodate at least the edge of the solar photovoltaic laminate; the installation groove has a first groove wall 8 and a second groove wall 9 that are arranged opposite to each other, and a third groove wall 10 that is connected to the first groove wall 8 and the second groove wall 9; the first structure A and the second structure B share the second groove wall 9.

[0056] In one embodiment, the first stopper 1 is located on the side of the first slot wall 8 away from the second slot wall 9. The first stopper 1 does not contact the ground and is arranged on the side away from the ground, which can prevent the frame unit 100 from sliding.

[0057] The first slot wall 8 and the second slot wall 9 are arranged in parallel in the height direction of the mounting slot 7 and are respectively perpendicular to the plane where the third slot wall 10 is located. The third slot wall 10 is parallel to the height direction of the mounting slot 7 .

[0058] The second structure B is provided with a connection groove 11, and the shape of the connection groove 11 in the vertical cross-sectional direction is a closed figure.

[0059] In one embodiment, the second stopper 2 is located at a side of the connection groove 11 away from the second groove wall 9. The groove wall where the second stopper 2 is located is in contact with the ground, ensuring that the stacked frame units 100 are placed horizontally on the ground.

[0060] Example 2

[0061] This embodiment provides a frame assembly, referring to Figure 8 , comprising: several frame units 100 of the above-mentioned embodiments; the frame assembly comprises at least two pairs of the frame units 100; the two frame units in each pair of the frame units are arranged opposite to each other; a connecting member 300, the connecting member 300 is suitable for being inserted into the second structure B, and the adjacent frame units 100 are connected by the connecting member 300.

[0062] The frame assembly includes at least two pairs of frame units 100; the two frame units 100 in each pair of frame units 100 are arranged opposite to each other; all the frame units 100 are suitable for forming a rectangle or a parallelogram; the connecting member 300 is suitable for being inserted into the connecting groove 110 of adjacent frame units 100 to connect the adjacent frame units 100.

[0063] In one embodiment, the first limiting members of the two relatively arranged frame units 100 are arranged in parallel; the second limiting members of the two relatively arranged frame units 100 are arranged in parallel; the first limiting members of the two adjacently arranged frame units 100 are arranged vertically; and the second limiting members of the two adjacently arranged frame units 100 are arranged vertically.

[0064] Specifically, Figure 8 As shown, the frame assembly includes a first frame unit 1001 and a third frame unit 1003 that are arranged opposite to each other, and a second frame unit 1002 and a fourth frame unit 1004 that are arranged opposite to each other; all the frame units are suitable for forming a polygon, such as a rectangle or a parallelogram.

[0065] Example 3

[0066] This embodiment provides a photovoltaic module, referring to Figure 8, including: the frame assembly of the above embodiment 2, and also including a solar photovoltaic laminate 200 surrounded by the frame assembly. In the above embodiment, while avoiding misaligned stacking between frame units, adjacent solar photovoltaic laminates are aligned with each other, which makes the solar photovoltaic laminates evenly stressed, thereby improving the stacking quality of the photovoltaic assembly; and the first limiter and the second limiter are respectively arranged at the top and bottom of the frame unit, which will not have an adverse effect on the erection of the photovoltaic assembly.

[0067] By arranging a plurality of frame units 100 on the side of the solar photovoltaic laminate 200 , the solar photovoltaic laminate 200 is packaged and protected.

[0068] Specifically, the first limiting member of the first frame unit 1001 is arranged in parallel with the first limiting member of the third frame unit 1003; the second limiting member of the second frame unit 1002 is arranged in parallel with the first limiting member of the fourth frame unit 1004; the second limiting member of the first frame unit 1001 is arranged in parallel with the second limiting member of the third frame unit 1003; the second limiting member of the second frame unit 1002 is arranged in parallel with the second limiting member of the fourth frame unit 1004; the first limiting member of the first frame unit 1001 is arranged perpendicularly to the first limiting member of the second frame unit 1002; the first limiting member of the third frame unit 1003 is arranged perpendicularly to the first limiting member of the fourth frame unit 1004; the second limiting member of the first frame unit 1001 is arranged perpendicularly to the second limiting member of the second frame unit 1002; the second limiting member of the third frame unit 1003 is arranged perpendicularly to the second limiting member of the fourth frame unit 1004.

[0069] In addition, in some other embodiments, the top view of the solar photovoltaic laminate may not be a rectangle, for example, a triangle, a parallelogram or other polygon. The corresponding frame assembly may include frame units that are less than or equal to the number of sides of the solar photovoltaic laminate. Moreover, when the length of a frame unit is much smaller than the length of a single side of the solar photovoltaic laminate, multiple frame units may be connected into one by a connector and installed together on a single side of the solar photovoltaic laminate, and multiple pairs of frame units may be installed together on the opposite sides of the solar photovoltaic laminate to complete the encapsulation of the solar photovoltaic laminate.

[0070] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A frame unit, characterized in that: include: A first structure and a second structure connected in a height direction of the frame unit; A first limiting member is provided on a side surface of the first structure facing away from the second structure; A second limiting member is provided on a side surface of the second structure facing away from the first structure; The first limiting member and the second limiting member are suitable for being matched and connected with the second limiting member of an adjacent frame unit when a plurality of the frame units are stacked, so that the side edges of any two adjacent stacked frame units are aligned.

2. The frame unit according to claim 1, characterized in that: A plurality of the frame units are stacked and placed, and when two adjacent frame units are in the limiting position, the first limiting member and the second limiting member are engaged with each other, including: The first limiting member is protrudingly arranged along the length direction or the width direction of the frame unit; the second limiting member is recessedly arranged along the length direction or the width direction of the frame unit; Alternatively, the first limiting member is recessed along the length direction or the width direction of the frame unit; and the second limiting member is protruded along the length direction or the width direction of the frame unit.

3. The frame unit according to claim 2, characterized in that: The first limiting member includes a plurality of first teeth; the plurality of first teeth are arranged at intervals; and a first groove is formed between adjacent first teeth; The second position-limiting member includes a plurality of second teeth; the plurality of second teeth are arranged at intervals; and a second groove is formed between adjacent second teeth; A plurality of the frame units are stacked and when any two adjacent frame units are in the limited position, at least part of the first teeth are located in the second groove, and at least part of the second teeth are located in the first groove.

4. The frame unit according to claim 3, characterized in that: The width of the first groove is 2mm-5mm; the width of the second groove is 2mm-5mm.

5. The frame unit according to claim 3, characterized in that: The cross section of the first tooth in a direction perpendicular to the length of the frame unit is in an arc shape or a rectangle; the cross section of the second tooth in a direction perpendicular to the length of the frame unit is in an arc shape or a rectangle.

6. The frame unit according to claim 5, characterized in that: The height of the first teeth is 3mm-8mm, and the width of the first teeth is 5mm-15mm; the height of the second teeth is 3mm-8mm, and the width of the second teeth is 5mm-15mm.

7. The frame unit according to claim 3, characterized in that: The roughness of the surface of the first tooth away from the first structure is 0.08Ra-0.16Ra; the roughness of the surface of the second tooth away from the second structure is 0.08Ra-0.16Ra.

8. The frame unit according to any one of claims 1 to 5, characterized in that: The first structure has an installation groove, which is used to accommodate at least the edge of the solar photovoltaic laminate; the installation groove has a first groove wall and a second groove wall arranged opposite to each other and a third groove wall connected to the first groove wall and the second groove wall; the first structure and the second structure share the second groove wall.

9. The frame unit according to claim 8, characterized in that: The first limiting member is located on a side of the first groove wall facing away from the second groove wall.

10. The frame unit according to claim 8, characterized in that: The first slot wall and the second slot wall are arranged in parallel in the height direction of the mounting slot and are respectively perpendicular to the plane where the third slot wall is located. The third slot wall is parallel to the height direction of the mounting slot.

11. The frame unit according to claim 8, characterized in that: The second structure is provided with a connection groove, and the shape of the connection groove in the vertical cross-section direction is a closed figure.

12. The frame unit according to claim 11, characterized in that: The second limiting member is located at a side of the connecting groove away from the second groove wall.

13. A frame assembly, characterized in that: include: A plurality of frame units according to any one of claims 1 to 8; the frame assembly comprises at least two pairs of the frame units; the two frame units in each pair of the frame units are arranged opposite to each other; A connecting piece, wherein the connecting piece is suitable for being inserted into the second structure, and adjacent frame units are connected via the connecting piece.

14. A photovoltaic module, characterized in that: The frame assembly of claim 13, further comprising a solar photovoltaic laminate surrounded by the frame assembly.

Images