CN218456407U

CN218456407U - Frame, photovoltaic module and photovoltaic system

Info

Publication number: CN218456407U
Application number: CN202222333093.2U
Authority: CN
Inventors: 高慧慧; 田君山; 燕续峰; 吴小秋; 甘胜泉
Original assignee: Xinyu Saiwei Power Technology Co ltd
Current assignee: Xinyu Haiyuan Power Technology Co.,Ltd.
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-02-07
Anticipated expiration: 2032-09-02

Abstract

The utility model discloses a frame, photovoltaic module and photovoltaic system relates to the photovoltaic module field, the frame includes the frame strip, frame strip top is formed with the mounting groove, the top side and the inboard of mounting groove are formed with uncovered respectively, and two uncovered intercommunications pass through in order to be applicable to the lamination piece uncovered cooperation in the mounting groove. The utility model adopts the frame with the open mounting groove, which can save the area of the glass, the EVA and the back plate, thereby effectively saving the cost of the assembly; in addition, the problem of snow and ash collection of the existing installation groove is solved, and therefore the problem of power generation loss of the assembly caused by the snow and ash collection is effectively reduced.

Description

Frame, photovoltaic module and photovoltaic system

Technical Field

The utility model relates to a photovoltaic module field especially relates to a frame, photovoltaic module and photovoltaic system.

Background

The area of the back plate in the existing photovoltaic module can influence the cost of the module; in addition, the adopted aluminum alloy frame has higher cost and is easy to be corroded by seawater when being used on islands such as seaside and the like, so that the mechanical property at the later stage is influenced; therefore, a new frame is required to be developed.

Disclosure of Invention

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model aims at providing a frame and photovoltaic module.

The utility model discloses a first aspect discloses a frame, the frame includes the frame strip, frame strip top is formed with the mounting groove, the top side and the inboard of mounting groove are formed with uncovered respectively, and two uncovered intercommunications pass through in order to be applicable to the lamination piece uncovered cooperation in the mounting groove.

Optionally, the frame strip includes two outer side plates and two inner side plates parallel to each other, two upper top plates and two lower bottom plates parallel to each other, the outer side plates and the inner side plates are perpendicular to the upper top plates and the lower bottom plates, one end of the outer side plates is connected with one end of the lower bottom plates, one end of the inner side plates is connected with the upper top plates, the other end of the inner side plates is disposed on the lower bottom plates, the other end of the upper top plates is disposed on the outer side plates, and the mounting grooves are formed between the outer side plates higher than the inner side plates and the upper top plates.

Further, the height of the mounting groove is 0.5-3.5mm; the width of the mounting groove is 10-30mm.

Optionally, the side frame strip is an I-shaped side frame strip or an L-shaped side frame strip; the side frame strip extends into a long strip shape to form the I-shaped side frame strip; the frame strip extends to include first sub-frame and second sub-frame, the length one end of first sub-frame with the length one end vertical connection of second sub-frame is L shape frame strip.

Optionally, the material of the side frame strip is a glass fiber reinforced composite material, and preferably, the material of the side frame strip is a glass fiber epoxy resin-based composite material.

Further, frame strip bottom is provided with and holds the chamber, it is equipped with connection structure to hold the chamber, connection structure be used for with adjacent the frame strip is connected.

Furthermore, the top of the side frame strip comprises two parallel outer side plates and inner side plates, two parallel upper top plates and two parallel lower bottom plates, the outer side plates and the inner side plates are perpendicular to the upper top plates and the lower bottom plates, one end of each outer side plate is connected with one end of each lower bottom plate, one end of each inner side plate is connected with the upper top plate, the other end of each inner side plate is arranged on the lower bottom plates, the other end of each upper top plate is arranged on the outer side plates, and the outer side plates, the lower bottom plates, the inner side plates and the upper top plates form accommodating cavities.

Further, connection structure includes connector or coupling groove, at least part of connector is followed stretch out in holding the chamber, coupling groove is whole or partial to be formed hold on the chamber wall in chamber, wherein, the connector be used for with adjacent the frame strip coupling groove cooperation, coupling groove be used for with adjacent the frame strip the connector cooperation.

A second aspect of the utility model discloses a photovoltaic module, include:

the utility model discloses a frame, the frame includes a plurality of the frame strip, it is a plurality of the frame strip end to end links to each other in proper order in order to form square loop structure, wherein, and is a plurality of the frame strip includes four L shaped frame strips and four at least I shaped frame strips. The third aspect of the utility model discloses a photovoltaic system is applied to roof or roof, adopts if the utility model discloses a photovoltaic module of second prepares and obtains.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model adopts the frame of the open mounting groove, so that the mounting groove can not shield the illumination area above the glass, the periphery of the glass is not required to be left white, the size of the glass can be equal to that of the photovoltaic module, thereby saving the areas of the glass, the EVA and the back plate and effectively saving the cost of the module; in addition, the problem of snow and ash collection of the existing side U-shaped mounting groove is also solved by the open mounting groove, and the problem of power generation loss of the assembly caused by the snow and ash collection is effectively reduced.

(2) The utility model adopts the frame of the glass fiber reinforced composite material, and the composite material has low price, excellent acid and alkali resistance and certain mechanical property, thereby solving the problem of seawater corrosion caused by aluminum materials on the one hand; on the other hand, the cost is lower, and the cost of the frame is further reduced.

(3) The utility model discloses a new connected mode has further strengthened the intensity of glass fiber reinforced composite's frame to make its ability effective application, the practicality is strong, easily industrialized production.

(4) The utility model discloses a photovoltaic module and photovoltaic system have high corrosion resisting property, and adopt combined material's density to obviously be less than the density of metal, and the subassembly quality that produces is light, is applicable to the field of roof, and the range of application is extensive.

Drawings

Fig. 1 is a schematic cross-sectional view of one embodiment of a frame strip of the present invention;

FIG. 2 is a schematic front view of one embodiment of an I-shaped frame strip according to the present invention;

fig. 3 is a schematic front view of an embodiment of the L-shaped frame strip of the present invention;

fig. 4 is an installation schematic diagram of an embodiment of the bezel of the present invention;

FIG. 5 is a schematic cross-sectional view of one embodiment of a prior art bezel strip;

FIG. 6 is a schematic view of the installation of one embodiment of a prior art bezel;

reference numerals:

1-the invention frame; 1' -prior art frame; 10-frame strips; 10' -prior art side frame strips; 11' -prior art connectors; 101-an outer panel; 102-an inner decking; 103-upper top plate; 104-lower floor; 105-a connector; 106-connecting grooves; 10 a-a mounting groove; 10 b-a containment chamber; 10' c-Prior Art mounting groove.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the prior art, as shown in fig. 6, a frame of a photovoltaic module is mainly formed by a side frame strip 10', the side frame strip 10' is generally an I-type aluminum alloy profile, as shown in fig. 5, a mounting groove 10' c is formed at the top of the side frame strip 10', the mounting groove 10' c is a "side U" -shaped groove, glass is clamped in the "side U" -shaped mounting groove, the glass and the side frame strip 10' are sealed by silica gel, and since the "side U" -shaped mounting groove shields a lighting area above the glass, in a module production process, at least 10mm of space needs to be left around the glass for being mounted in the mounting groove of the side frame strip 10 '; therefore, the area of the glass and the area of the EVA and the back plate corresponding to the glass are increased, and the cost of the assembly is increased.

In addition, since the upper end face of the mounting groove 10' c covers the glass, ash, snow and the like are collected at the edge close to the bottom during outdoor use, and the area expansion of the ash, snow and the like to the surface of the cell piece influences the power generation of the module, and finally, the power generation capacity of the module is low. In addition, the adopted aluminum profile is high in cost on one hand, and on the other hand, the aluminum profile is easy to corrode by seawater when used on islands such as sea surface and seaside, and the mechanical property in the later period is influenced.

To this end, a first aspect of the present invention provides a frame, which has low cost, corrosion resistance and high power generation amount, as shown in fig. 1 to 4:

the frame 1 comprises a frame strip 10, wherein a mounting groove 10a is formed at the top of the frame strip 10, the top side and the inner side of the mounting groove 10a are respectively provided with an opening, and two opening intercommunications are matched with the laminated piece in the mounting groove 10a through the openings. Therefore, the laminated piece (such as a combined piece of the glass piece, the EVA and the back plate) is installed through the installation groove 10a, the installation groove 10a cannot shield an illumination area above the glass, the periphery of the glass does not need to be kept blank, the size of the glass can be equal to that of the photovoltaic module, the areas of the glass, the EVA and the back plate can be saved, and the cost of the module is effectively saved.

In an alternative embodiment, the frame strip 10 includes two parallel outer side plates 101 and inner side plates 102, and two parallel upper top plates 103 and lower bottom plates 104, the outer side plates 101 and inner side plates 102 are perpendicular to the upper top plates 103 and lower bottom plates 104, one end of the outer side plate 101 is connected to one end of the lower bottom plate 104, one end of the inner side plate 102 is connected to the upper top plate 103, the other end of the inner side plate 102 is disposed on the lower bottom plate 104, the other end of the upper top plate 103 is disposed on the outer side plate 101, and a mounting groove 10a is formed between the outer side plate 101 and the upper top plate 103 higher than the inner side plate 102. Thereby, the mounting groove 10a is formed by the connection between the side plates. The outer panel 101, the upper top plate 103, the inner panel 102 and the lower bottom plate 104 may be integrally formed, or assembled and prepared, and the present invention is not limited thereto.

In an alternative mode, as shown in fig. 1, the height of the installation groove 10a formed by the outer side plate 101 and the upper top plate 103 is b, and the width thereof is a.

Wherein the height b ranges from 0.5mm to 3.5mm; for example, it may be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm or 3.5mm; the height b may limit the movement of the laminate so that the laminate does not protrude from the bezel. Therefore, when the glass is carried or transported, if collision with other objects occurs, the glass can collide with the frame preferentially, and the glass cannot collide, so that the assembly is not easy to break. Thus, if the height is too low, the laminate cannot be restrained and the glass protected; if the height is too high, the illumination is influenced, and the pollution discharge is not facilitated; the width a ranges from 10mm to 30mm; for example, it may be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm or 30mm; the width a mainly prevents the glass from moving out of the frame 1, and if the width is too narrow, the assembly may deform and separate from the frame when the assembly is pressed; if the width is too wide, the cost increases.

In an alternative, as shown in fig. 2-3, the side frame strip 10 is an I-shaped side frame strip or an L-shaped side frame strip; as shown in fig. 2, the side frame strip extends into a long strip shape so that the side frame strip is formed into an I-shaped side frame strip; as shown in fig. 3, the side frame strip includes a first sub-frame and a second sub-frame, and one end of the first sub-frame is perpendicular to one end of the second sub-frame, so that the side frame strip is formed into an L-shaped side frame strip. Therefore, the composition of the frame 1 is simpler and more convenient through the design of different frame strips 10.

In an alternative embodiment, the frame strip 10 is made of glass fiber reinforced polymer; for example, the material can be a glass fiber reinforced epoxy resin-based composite material, the glass fiber reinforced epoxy resin-based composite material is composed of epoxy resin and glass fiber, the epoxy resin is of an organic multi-molecular structure and has excellent acid and alkali resistance, the glass fiber can increase the mechanical strength of the epoxy resin, and the epoxy resin can avoid the seawater corrosion problem caused by the adoption of an aluminum material; and the cost is lower, and the cost of the frame 1 is further reduced.

In the prior art, as shown in fig. 6, the side frame strips 10 of the frame 1' are I-shaped long-strip profiles made of aluminum alloy, the side frame strips 10' are connected by a connecting member 11', for example, a metal right-angle corner connector connected with the side frame strips 10' by screws or bolts, the metal right-angle corner connector is mainly fixedly connected outside the side frame strips 10', and the glass fiber reinforced polymer has mechanical strength lower than that of the metal right-angle corner connector, so that the side frame strips are deformed due to the external connection of the glass fiber reinforced polymer.

In view of this, the present invention provides a new connection method.

The bottom of the side frame strip 10 is provided with a receiving cavity 10b, which is provided with a connecting structure for connecting with the adjacent side frame strip, and in a specific embodiment, as shown in fig. 1, the receiving cavity 10b may be formed by an outer side plate 101, an upper top plate 103, an inner side plate 102 and a lower bottom plate 104 of the side frame strip 10.

As shown in fig. 2-3, the connection structure includes a connection head 105 and/or a connection groove 106; at least a portion of the connecting head 105 extends out of the accommodating cavity 10b, the connecting groove 106 is formed wholly or partially on the cavity wall of the accommodating cavity 10b, the connecting head 105 is used for matching with the connecting groove 106 of the adjacent side frame strip 10, and the connecting groove 106 is used for matching with the connecting head 105 of the adjacent side frame strip 10.

In a specific embodiment, both ends of the side frame strip 10 may be provided with a connector 105 or a connecting groove 106, or both ends of the side frame strip 10 may be provided with a connector 105 at one end and a connecting groove 106 at the other end; in the process of forming the frame 1 by the side frame strips 10, two ends of the adjacent side frame strips 10 adopt different connection structures, for example, the connector 105 of one side frame strip 10 is matched with the connection groove 106 of the other side frame strip 10, so that the assembly of the frame is realized through the matching of the connector 105 and the connection groove 106.

In an alternative mode, the connecting head 105 is adapted to be matched with the connecting groove 106 of the adjacent side frame strip 10, and the connecting groove 106 is adapted to be matched with the connecting head 105 of the adjacent side frame strip 10; the connecting head 105, the connecting groove 106 and the accommodating cavity 10b can be manufactured in an integrated manner, or can be manufactured by combining with the accommodating cavity 10b in a manner of using bolts, screws, clamping or bonding. Through holding intracavity portion and setting up connection structure, not only prevented the deformation of frame strip, and strengthened connection area's intensity.

The connecting head 105 of one of the side frames 10 and the connecting groove 106 of the other side frame 10 are connected in a convex-concave manner, for example, as shown in fig. 2, the connecting head 105 is a rectangular thin plate, the connecting head 105 includes a thin plate body and a protruding portion protruding from the thin plate, and the height direction of the protruding portion is along the direction from the lower bottom plate 104 to the upper top plate 103; the connecting groove 106 is formed on the outer side plate 101 or the inner side plate 102, the connecting groove 106 is a pit with a width slightly smaller than the height of the convex part, and the width direction of the pit is along the direction from the lower bottom plate 104 to the upper top plate 103; insert connecting groove 106 back with connector 105 through certain dynamics, because the height of bulge is a little higher than the width of pit, connector 105 can no longer be taken out, has realized the cooperation of connector and connecting groove and has connected to realize fixing between two adjacent frame strips 10. The above is only an embodiment of the present invention, the present invention does not limit the specific design of the connector and the connecting groove, and any mode of realizing the connection between the two adjacent frame strips 10 through the connecting mode of the connector and the connecting groove belongs to the invention scope of the present invention.

In this way, the connection of the side webs 10 is achieved on the one hand and the strength between the side webs 10 is also increased on the other hand by the provision of the connecting elements in the grooves of the receiving space 10 b.

In an optional mode, the length of the connector extending out of the accommodating cavity 10b is 30 to 100mm; for example, it may be 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 100mm; the depth of the connecting groove is 30 to 100mm; for example, it may be 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 100mm.

A second aspect of the present invention provides a photovoltaic module, as shown in fig. 4, the photovoltaic module includes a frame 1 disclosed in the first aspect of the present invention, the frame 1 includes a plurality of frame strips 10, the plurality of frame strips 10 are sequentially connected end to form a square ring structure, which may be rectangular or square, for example; the plurality of side frame strips 10 includes four L-shaped side frame strips 10 and at least four I-shaped side frame strips 10.

As shown in fig. 4, the photovoltaic module is composed of four L-shaped frame strips 10 and four I-shaped frame strips 10; one end of each side frame strip 10 is provided with a connector 105, the other end is provided with a connecting groove 106, and in the connecting process, one section of the connector 105 of the adjacent side frame strip 10 is connected with the connecting groove 106 at the other end in a matching manner, so that the assembly of the photovoltaic module is realized.

Through the connection between the multiunit frame strip 10, can strengthen the intensity between the frame 1 for the installation of subassembly is more firm.

In an alternative embodiment, the frame strip 10 is made of glass fiber reinforced polymer. Because the material of frame strip 10 is the polymer, its intensity is less than the aluminum alloy frame, in the installation, if directly adopt longer I type frame strip 10 and the combination of L type installed part, then probably lead to length too long because the influence of gravity exists the possibility of deformation, through the aggregate erection of many I type frame strips 10, thereby the combination of connecting piece can strengthen the intensity of joint department and make whole photovoltaic frame 1's intensity higher, prevents that the frame strip from warping. The material of the polymer can effectively avoid the corrosion of seawater, and further reduces the cost of the photovoltaic module.

In an optional mode, the lengths of a first side frame strip and a second side frame strip of the L-shaped frame 1 may be equal or unequal, and the length of the side of the first side frame strip and the length of the side of the second side frame strip are 100-700mm; for example, it may be 100mm, 200mm, 300mm, 400mm, 500mm, 600mm or 700mm; when the frame strip is made of composite materials, if the side length is too long, the frame strip is easy to deform. In addition, the design through different frame strips also can increase the variety of photovoltaic module preparation, makes it be applicable to the photovoltaic module of different models.

The utility model discloses well photovoltaic module's main preparation process as follows:

the method comprises the following steps: firstly, selecting four L-shaped frame strips 10 and at least four I-shaped frame strips 10 according to the size of glass, wherein the frame strips 10 are respectively provided with a connector 105 and a connecting groove 106, and the L-shaped frame strips 10 and the I-shaped frame strips 10 are connected through the connector 105 and the connecting groove 106 to form an inner frame; the size of the inner frame is equal to or larger than that of the glass;

step two: coating silica gel or glass cement on the upper top plate 103 of the installation groove 10a of the side frame strip 10;

step three: the laminate is placed on the mounting groove 10a of the frame strip 10 for lamination.

The third aspect of the utility model discloses a photovoltaic system is applied to roof or roof, adopts if the utility model discloses a photovoltaic module of second prepares and obtains. The utility model discloses a photovoltaic system has high corrosion resisting property, and adopts combined material's density obviously to be less than the density of metal, and the subassembly quality that produces is light, is applicable to the field of roof, and the range of application is extensive.

The frame and photovoltaic module of the present disclosure are described in detail below with reference to several specific embodiments. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.

The first embodiment is as follows:

selecting 4L-shaped frame strips 10 and 4I-shaped frame strips 10 which are made of glass fiber reinforced epoxy resin matrix composite materials, wherein the angle of each L-shaped frame strip 10 is 90 degrees, the side lengths of the two sides are equal to 519mm, one end of each frame strip 10 is provided with a connector, and the other end of each frame strip is provided with a connecting groove matched with the adjacent frame strip 10; the length of the I-shaped frame strip 10 is 528 mm, the top of the frame strip 10 is formed with an installation groove, the height a of the installation groove is 1.0mm, and the width of the installation groove is 15mm; the L-shaped frame strips 10 and the I-shaped frame strips 10 are arranged in the order shown in fig. 1, wherein two L-shaped frame strips 10 form short sides, and two L-shaped frame strips 10 and 2I-shaped frame strips 10 form long sides, and are connected together by connectors and connecting grooves to form a frame.

The silica gel is smeared on the mounting groove of the side frame strip 10, and the lamination piece with the size of 2089 mm multiplied by 1032 mm is sequentially placed on the mounting groove, so that the photovoltaic module is obtained.

The second embodiment:

different from the first embodiment, 4L-shaped frame strips 10 and 6I-shaped frame strips 10 are selected, two L-shaped frame strips 10 and 1I-shaped frame strip 10 form the short side, and two L-shaped frame strips 10 and 2I-shaped frame strips 10 form the long side.

Example three:

different from the first embodiment, 4L-shaped frame strips 10 and 6I-shaped frame strips 10 are selected, two L-shaped frame strips 10 forming the short sides, and two L-shaped frame strips 10 and 3I-shaped frame strips 10 forming the long sides.

While the invention has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

While the invention has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the invention. Accordingly, the specification and drawings are merely illustrative of the invention as defined by the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a frame, its characterized in that, the frame includes the frame strip, frame strip top is formed with the mounting groove, the top side and the inboard of mounting groove are formed with uncovered respectively, and two uncovered intercommunications pass through in order to be applicable to the lamination piece uncovered cooperation in the mounting groove.

2. The frame of claim 1, wherein the frame strip comprises two parallel outer plates and inner plates, two parallel upper top plates and two parallel lower plates, the outer plates and the inner plates are perpendicular to the upper top plates and the lower plates, one end of each outer plate is connected to one end of the lower plate, one end of each inner plate is connected to the upper top plate, the other end of each inner plate is disposed on the lower plate, the other end of each upper top plate is disposed on the outer plates, and the mounting grooves are formed between the outer plates higher than the inner plates and the upper top plates.

3. The frame of claim 1, wherein the height of the mounting groove is 0.5-3.5mm; the width of the mounting groove is 10-30mm.

4. The frame according to claim 1, wherein the frame strip is an I-shaped frame strip or an L-shaped frame strip;

the side frame strip extends into a strip shape so that the side frame strip is formed into the I-shaped side frame strip;

the side frame strip comprises a first sub-frame and a second sub-frame, wherein one end of the length of the first sub-frame is vertically connected with one end of the length of the second sub-frame, so that the side frame strip is formed into the L-shaped side frame strip.

5. The frame according to claim 1, wherein the frame strips are made of glass fiber reinforced composite material.

6. The frame according to claim 1, wherein the bottom of the frame strip is provided with a receiving cavity, and the receiving cavity is provided with a connecting structure, and the connecting structure is used for connecting with the adjacent frame strip.

7. The frame as claimed in claim 6, wherein the top of the frame strip comprises two parallel outer plates and inner plates, two parallel upper top plates and two parallel lower bottom plates, the outer plates and the inner plates are perpendicular to the upper top plates and the lower bottom plates, one end of the outer plates is connected to one end of the lower bottom plates, one end of the inner plates is connected to the upper top plates, the other end of the inner plates is disposed on the lower bottom plates, the other end of the upper top plates is disposed on the outer plates, and the outer plates, the lower bottom plates, the inner plates and the upper top plates form accommodating cavities.

8. The frame according to claim 7, wherein the connecting structure comprises a connector and/or a connecting groove, at least a portion of the connector extends out of the accommodating cavity, and the connecting groove is formed wholly or partially on a wall of the accommodating cavity, wherein the connector is used for being matched with the connecting groove of the adjacent frame strip, and the connecting groove is used for being matched with the connector of the adjacent frame strip.

9. A photovoltaic module, comprising: the frame of any one of claims 1 to 8, which comprises a plurality of said frame strips connected end to form a square ring-shaped structure, wherein the plurality of said frame strips comprises four L-shaped frame strips and at least four I-shaped frame strips.

10. A photovoltaic system for application to a roof or roof, prepared using the photovoltaic module of claim 9.