CN218352460U

CN218352460U - Frame for photovoltaic module and photovoltaic module

Info

Publication number: CN218352460U
Application number: CN202221744421.1U
Authority: CN
Inventors: 陈水林
Original assignee: Risen Energy Co Ltd
Current assignee: Risen Energy Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2023-01-20
Anticipated expiration: 2032-07-06

Abstract

The utility model relates to a frame and photovoltaic module for photovoltaic module. Bending and molding the first profile plate and the second profile plate for multiple times; the frame is divided into a frame mounting area, a frame cavity area and a frame clamping area which are sequentially connected from bottom to top, and the frame cavity area is arranged at one end of the frame mounting area; the first section bar plate and the second section bar plate at the frame clamping area are at least partially attached, and the free end of the frame clamping area is bent to form a top frame; a U-shaped clamping cavity is defined by the frame clamping area and the top of the closed cavity; the top frame is horizontally arranged, the free end of the top frame is bent downwards to form a vertical blocking beam, and a flow blocking protrusion is formed on the side, close to the U-shaped clamping cavity, of the vertical blocking beam. When the photovoltaic module is assembled, the silica gel can not overflow the mirror surface of the photovoltaic module, and the assembly quality and the attractiveness of the product are improved.

Description

Frame for photovoltaic module and photovoltaic module

Technical Field

The utility model belongs to the technical field of the section bar technique and specifically relates to a frame and photovoltaic module for photovoltaic module are related to.

Background

The photovoltaic module is a power generation device capable of generating direct current when exposed to the sun, mainly comprises a solar cell panel, toughened glass, EVA (ethylene vinyl acetate), a transparent TPT (thermoplastic vulcanizate) back panel and an alloy frame, and has the characteristics of long service life, strong mechanical compression resistance and external force and the like.

One of the frames used in the photovoltaic module in the current industry is an aluminum alloy profile, and as shown in fig. 1, the aluminum alloy profile frame 1 for the photovoltaic module includes a bottom plate 10, a rectangular cavity 12 vertically disposed at one end of the bottom plate 11, and an accommodating portion 13 disposed at the top of the rectangular cavity 12. When the photovoltaic module is installed, the edge of the photovoltaic module 2 is inserted into the accommodating part 13 of the frame, and the installation connection between the photovoltaic module and the frame is realized. The surface of the section bar is coated with an oxide film by adopting an aluminum alloy material through processes such as anodic oxidation and the like, so that the environment pollution is large and the national double-carbon requirement is not met; in addition, in order to improve the structural strength of the aluminum alloy profile, the thickness of the profile is generally increased, and if the thickness is increased, the consumption of the aluminum profile material is increased, which results in high cost.

On the basis, a novel frame for the photovoltaic module is developed in the prior art, and as shown in fig. 2, the frame is formed by bending a first profile plate and a second profile plate for multiple times. Divide into frame installing zone 3, frame cavity district 4 and the frame clamping area 5 that from the bottom up connected gradually with this frame, this frame cavity district 4 sets up the one end at frame installing zone 3. The frame mounting area 3 is used for fixing the whole frame; the frame cavity area 4 is used for inserting and mounting corner connectors and the like so as to realize connection between adjacent frames; the frame clamping area 5 is used for supporting the photovoltaic assembly, and a top frame 50 used for being connected with the upper surface of the outer edge of the photovoltaic assembly is formed after the free end of the frame clamping area 5 is bent; and a U-shaped clamping cavity 51 is defined by the frame clamping area 5 and the lower support table 41 on the top of the closed cavity 40, when in use, the photovoltaic module 2 and the outer edge of the mirror surface 20 are correspondingly inserted into the U-shaped clamping cavity 51, wherein the mirror surface 20 refers to a light receiving surface on the upper surface of the photovoltaic module.

The frame for the photovoltaic module formed by bending is adopted, the mirror surface overflows glue seriously, and the appearance, production and manufacturing of the module are influenced.

Based on this, the utility model discloses in research and developed a neotype frame for photovoltaic module to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a frame for photovoltaic module, this frame are when photovoltaic module assembles, and silica gel is extruded in the gluey inslot that overflows, can not overflow photovoltaic module's mirror surface, improves product packaging quality and aesthetic property.

The utility model adopts the following technical scheme: a frame for a photovoltaic module is formed by bending a first profile plate and a second profile plate for multiple times; the frame is divided into a frame mounting area, a frame cavity area and a frame clamping area which are sequentially connected from bottom to top, wherein the frame cavity area is arranged at one end of the frame mounting area; the first section bar plate and the second section bar plate at the frame clamping area are at least partially attached, and the free end of the frame clamping area is bent to form a top frame; a U-shaped clamping cavity is defined by the frame clamping area and the top of the closed cavity;

the free end of the top frame is bent downwards to form a vertical blocking beam, and a flow blocking bulge is formed on the side, close to the U-shaped clamping cavity, of the vertical blocking beam.

Furthermore, an included angle a between the inner side surface of the flow blocking protrusion and the upper surface of the top frame is not more than 90 degrees.

Furthermore, the vertical blocking beam is vertically arranged, and the bottommost end of the vertical blocking beam is a horizontal plane.

Further, the top frame is of a double-layer structure and is horizontally arranged; which comprises an upper top edge and a lower top edge which are arranged from top to bottom in sequence;

the flatness of the upper surface of the upper top edge is +/-0.5 mm;

and/or the middle part of the lower top edge is provided with an intercepting bulge facing to the side of the U-shaped clamping cavity, and the intercepting bulge is arranged above the bottommost end of the vertical blocking beam.

Further, the cross-sectional shape of the intercepting projection is an inverted trapezoid.

Furthermore, anti-skid grains are formed on the lower surface of the frame mounting area and/or the frame cavity area.

Further, the vertical blocking beam has a bending radian, so that the top frame has a straight part and a bending part.

Further, a lower supporting table is arranged at the top of the closed cavity, and the inner side end of the lower supporting table is downwards sunken to form an underflow rubber groove; and/or a reinforcing rib is formed on the frame on at least one side of the closed cavity.

Furthermore, the first section bar plate and the second section bar plate are made of zinc-magnesium-aluminum alloy steel materials, and the thickness of the first section bar plate and the second section bar plate is 0.2 mm-2.0 mm.

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

1) The utility model discloses in this frame for photovoltaic module, the section bar in frame centre gripping district is the bilayer, can effectively reduce the thickness of individual layer section bar, when making things convenient for the section bar processing of buckling, guarantees that the U type centre gripping chamber of the double-deck section bar after the shaping has sufficient support strength for non-deformable improves the encapsulation quality when packing. Meanwhile, the free end of the top frame is bent downwards to form a vertical blocking beam, and a flow blocking bulge is formed on the side, close to the U-shaped clamping cavity, of the vertical blocking beam and used for blocking overflow of the silica gel or the foam rubber during installation of the photovoltaic module; extrude inwards during the assembly of photovoltaic module, because vertical blocking beam blocks with the choked flow is bellied for silica gel can not overflow photovoltaic module's mirror surface, and silica gel is extruded in the gluey groove of overflow, improves product assembly quality and aesthetic property.

2) The intercepting bulge is arranged to divide the upper glue overflowing groove into a first glue overflowing groove area and a second glue overflowing groove area which are sequentially arranged from inside to outside, the bottommost end of the outer side vertical obstructing beam is in abutting connection with the outer edge of the upper mirror surface of the photovoltaic module, so that silica gel is obstructed in the second glue overflowing groove area and flows into the first glue overflowing groove area along a gap between the intercepting bulge and the mirror surface, the glue overflowing effect is good, and the yield in assembly is improved; meanwhile, the intercepting bulges are arranged, so that the overall thickness of the top frame can be increased, and the bending resistance mechanical load performance of the top frame is improved.

3) With the vertical setting of vertical blocking roof beam, and the bottommost of vertical blocking roof beam is a horizontal plane, area of contact when increasing the vertical blocking roof beam in the outside and the outward flange end of the last mirror surface of photovoltaic module and being connected, stability and the reliability of reinforcing connection further avoid the silica gel overflow.

4) Anti-skidding line is formed with in the lower surface department in frame installing zone and/or frame cavity district, plays anti-skidding effect to guarantee that the subassembly is in the packing transportation, even there is the vibration or jolt also can not produce because of the subassembly breakage and the inefficacy that slide and lead to.

5) The curling design is adopted, so that the whole section is prevented from being distorted and deformed, the whole section is fixed into a whole, and the stability of the whole section is improved.

Another object of the present invention is to provide a photovoltaic module, which comprises the above-mentioned frame for photovoltaic module.

Drawings

For a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a frame of an aluminum alloy profile in the prior art;

fig. 2 is a schematic diagram of a frame structure for a photovoltaic module in the prior art;

fig. 3 is a front view of the photovoltaic module of example 1 after being assembled to a frame structure for the photovoltaic module;

FIG. 4 is an enlarged view of a portion of the frame of the photovoltaic module of FIG. 3;

FIG. 5 is a perspective view of the frame for the photovoltaic module of FIG. 3;

fig. 6 is a front view of a frame for a photovoltaic module in example 2;

fig. 7 is a front view of a bezel for a photovoltaic module in example 3;

FIG. 8 is a front view of a frame for a photovoltaic module according to example 4;

FIG. 9 is a front view of a frame for a photovoltaic module according to example 5;

fig. 10 is a front view of a bezel for a photovoltaic module in example 6;

in the figure: the aluminum alloy profile comprises an aluminum alloy profile frame 1, a lower bottom plate 11, a rectangular cavity part 12 and an accommodating part 13;

a photovoltaic module 2, a mirror 20;

a frame mounting area 3;

the frame cavity area 4, the closed cavity 40, the lower support table 41, the reinforcing rib 42, the lower overflow glue groove 43 and the anti-skid pattern 44;

the frame comprises a frame clamping area 5, a top frame 50, an upper top edge 501, a lower top edge 502, a U-shaped clamping cavity 51, a vertical blocking beam 52, a flow blocking bulge 53, an upper glue overflowing groove 54 and an intercepting bulge 55;

an adhesive 6;

7 of C surface; curling 8; and (4) an A surface 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be discussed in detail below with reference to fig. 3 to 10 and specific embodiments:

example 1

In the embodiment, as shown in fig. 3 to 5, the frame for the photovoltaic module is formed by bending a first profile plate and a second profile plate multiple times. The frame is divided into a frame mounting area 3, a frame cavity area 4 and a frame clamping area 5 which are sequentially connected from bottom to top. Wherein, frame installing zone 3 is used for the fixed to whole frame, and what correspond, the first section bar board and the second section bar board of 3 departments of frame installing zone laminate each other. The frame cavity region 4 is arranged at one end of the frame mounting region 3 and is used for inserting and mounting corner connectors and the like so as to realize the connection between adjacent frames and improve the strength of the whole frame; correspondingly, the first profile plate and the second profile plate at the frame cavity region 4 are bent to form a closed cavity 40, and the top of the closed cavity 40 is provided with a lower support table 41 for supporting the lower surface of the photovoltaic module 2. The frame clamping area 5 is used for clamping and accommodating the photovoltaic component 2, the first section bar plate and the second section bar plate at the frame clamping area 5 are at least partially attached, a top edge frame 50 used for being connected with the outer edge of the upper surface of the photovoltaic component is formed after the free end of the frame clamping area 5 is bent by about 90 degrees, and the top edge frame 50 is horizontally arranged; and a U-shaped clamping cavity 51 is defined by the frame clamping area 5 and the lower support table 41 at the top of the closed cavity 40, and when the photovoltaic module is used, the outer edge of the photovoltaic module is correspondingly inserted into the U-shaped clamping cavity 51.

Meanwhile, the free end of the top frame 50 is bent downwards to form a vertical blocking beam 52, and a flow blocking protrusion 53 is formed on the side, close to the U-shaped clamping cavity, of the vertical blocking beam 52 and used for blocking overflow of silica gel or other glue when the photovoltaic module 2 is installed, so that an upper glue overflow groove 54 is correspondingly formed below the top frame 50, and the problem that glue overflows from the mirror surface 20 of the photovoltaic module 2 is solved. It should be noted that the adhesive 6 filled in the glue overflowing groove may be silica gel, foam glue, or other glue, and the present invention is not limited thereto. Preferably, the angle a between the inner side surface of the protrusion 53 and the upper surface of the top frame 50 is not greater than 90 degrees, which is the angle on the side close to the frame holding area 3, as shown in fig. 3. In this embodiment, the included angle between the inner side surface of the flow-obstructing protrusion 53 and the upper surface of the top frame 50 is an acute angle; when the included angle between the two is smaller than 90 degrees, the inner side of the flow-blocking protrusion 53 inclines towards the inner side of the U-shaped clamping cavity 51, as shown in fig. 3, so that the silica gel can flow towards the inside of the U-shaped clamping cavity 51 along the inner side of the flow-blocking protrusion 53, the effect of preventing glue overflow is improved, and the yield of products is improved.

The utility model discloses in this frame for photovoltaic module, frame clamping area 5 is the bilayer with the section bar of frame installing zone 3, can effectively reduce the thickness of individual layer section bar, makes things convenient for the section bar to buckle processing in, guarantees that the U type centre gripping chamber 51 of the double-deck section bar after the shaping has sufficient support strength for non-deformable when packing improves the packaging quality. Meanwhile, the free end of the top frame 50 is bent downwards to form a vertical blocking beam 52, and a flow blocking protrusion 53 is formed on the side, close to the U-shaped clamping cavity, of the vertical blocking beam 52 and used for blocking overflow of the adhesive 6 during installation of the photovoltaic module; the photovoltaic module extrudes inwards during assembly, and due to the blocking of the vertical blocking beam 52 and the blocking protrusion 53, the adhesive 6 such as silica gel cannot overflow the mirror surface 20 of the photovoltaic module 2, and the silica gel is extruded in the overflow glue groove 54, so that the product assembly quality and the attractiveness are improved.

Specifically, in the present embodiment, the top frame 50 is a double-layer structure and is horizontally disposed, and includes an upper top edge 501 and a lower top edge 502 sequentially disposed from top to bottom, where the upper top edge 501 is formed by bending a free end of the first profile plate at the frame clamping area 5, and the lower top edge 502 is formed by bending a free end of the second profile plate at the frame clamping area 5.

Correspondingly, the flatness of the upper surface (i.e., the surface a 9 shown in fig. 3) of the upper top edge 501 is ± 0.5mm, so that the upper surface of the upper top edge 501 is a flat surface, which can improve the dimensional accuracy of the U-shaped clamping cavity 51 during the production of the frame, and solve the problem of low dimensional accuracy caused by the bending of the top frame 50 in the past.

The free end of the top frame 50 is bent downwards to form a vertical blocking beam 52, and a flow blocking protrusion 53 is formed on the side, close to the U-shaped clamping cavity, of the vertical blocking beam 52, so that an upper glue overflow groove 54 is formed below the top frame 50, and the number of the upper glue overflow grooves 54 in the U-shaped clamping cavity 51 is at least one. An intercepting bulge 55 facing to the U-shaped clamping cavity side can be further formed in the middle of the lower top edge 502, and the intercepting bulge 55 is arranged above the bottommost end of the vertical blocking beam 52, namely the distance between the intercepting bulge 55 and the lower supporting platform 41 on the top of the closed cavity 40 is larger than the distance between the bottommost end of the vertical blocking beam 52 and the lower supporting platform 41 on the top of the closed cavity 40. The number of the intercepting projections 55 may be one or plural; in this embodiment, the number of the intercepting protrusions 55 is one, the intercepting protrusions 55 divide the upper glue overflowing groove 54 into a first glue overflowing groove region and a second glue overflowing groove region which are sequentially arranged from inside to outside, the bottom end of the outer vertical blocking beam 52 is in abutting connection with the outer edge of the upper mirror surface 20 of the photovoltaic module 2, so that the silica gel is blocked in the second glue overflowing groove region and flows into the first glue overflowing groove region along the gap between the intercepting protrusions 55 and the mirror surface 20, the glue overflowing effect is good, and the yield during assembly is improved; meanwhile, the intercepting projection 55 is arranged to serve as a reinforcing rib of the top frame 50, so that the bending mechanical load resistance of the top frame 55 is improved. The shape of the catching protrusion 55 may be various, and the shape thereof is not limited in the present invention. However, preferably, the cross section of the intercepting projection 55 is in an inverted trapezoid shape, in this embodiment, an inverted isosceles trapezoid shape, so as to increase the contact area with the silica gel; and the intercepting projection 55 is provided at the top rim 50 away from the vertical intercepting beam. Correspondingly, the first profile plate and the second profile plate at the intercepting bulge 55 and the overflow bulge 53 may be completely attached to each other, may also be partially attached to each other, or may not be attached to each other at all, so as to achieve at least partial attachment of the first profile plate and the second profile plate at the frame clamping area 5.

Preferably, the vertical blocking beams 52 are vertically arranged, and the bottom end of the vertical blocking beam 52 is a horizontal plane. Meanwhile, the cross section of the flow blocking protrusion 53 is in the shape of a right triangle and comprises a first right-angle side and a second right-angle side, wherein the first right-angle side is connected with the inner wall of the vertical blocking beam 52, the second right-angle side is on the same plane as the horizontal plane at the bottommost end of the vertical blocking beam 52, the contact area between the bottommost end of the outer vertical blocking beam 52 and the outer edge of the upper mirror surface 20 of the photovoltaic module 2 is increased, the connection stability and reliability are enhanced, and silica gel overflow is further avoided.

Specifically, the anti-slip lines 44 are formed on the lower surface of the frame mounting region 3 and/or the frame cavity region 4, i.e., the surface C7 shown in fig. 3, so as to prevent slipping, and ensure that the components are not broken or failed due to slipping even if vibrated or bumpy during the packaging and transportation process; meanwhile, the sliding generated during stacking is avoided, so that the problems of assembly stacking dislocation, inclination, plate explosion and the like are caused. Preferably, the anti-skid lines are arranged on the lower surface of the frame cavity area 4, so that the fixed installation of the frame installation area is prevented from being influenced. Correspondingly, the anti-skid lines are in a sawtooth shape, the anti-skid effect is good, the decorative effect is achieved, and the attractiveness is good.

Specifically, the end part of the frame mounting region 3 far away from the closed cavity 40 is bent towards the closed cavity side to form a curled edge 8, and the curled edge part is a three-layer, four-layer or five-layer section bar. Preferably, as shown in this embodiment, a five-layer profile. The adoption of the turned edge design prevents the distortion and deformation of the whole section, so that the whole section is fixed as a whole, and the stability of the whole section is improved.

Specifically, a reinforcing rib 42 can be formed on the frame on at least one side of the closed cavity 40, so that the problem of stress deformation of the assembly is solved, and the load capacity of the frame is improved. In this embodiment, the reinforcing rib 42 is provided only on the side close to the bezel mounting section 3.

Specifically, in this embodiment, the first profile plate and the second profile plate are made of a zinc-magnesium-aluminum alloy steel material, and the thickness of the first profile plate and the second profile plate is 0.2mm to 2.0mm, preferably, the thickness of the steel material is 0.5mm to 1.0mm; and forming different sections of the steel frame through rolling, bending and forming. In the utility model, the first section bar plate and the second section bar plate can be in a split structure or an integrated structure; in this embodiment, the first and second profile plates are of a unitary construction, and the free end of the upper top edge 501 and the free end of the lower top edge 502 are joined together to form the free end of the top rim 50.

Example 2

The design of the intercepting projection 55 of embodiment 1 is eliminated in embodiment 2, and the others are unchanged, as shown in fig. 6.

Example 3

In embodiment 3, the design of the intercepting projection 55 in embodiment 1 is eliminated, and the design of the lower overflow glue groove 43 is correspondingly increased, as shown in fig. 7, the specific technical solution is as follows:

on top of the closed chamber 40 is a lower support table 41 for supporting the lower surface of the photovoltaic module. The inner side end of the lower supporting table 41 is recessed downwards to form an underflow rubber groove 43, the underflow rubber groove 43 is used for accommodating a certain amount of silica gel to well seal the edge of the photovoltaic assembly, and the underflow rubber groove 43 is matched with the overflow rubber groove 54, so that the clamping effect of the U-shaped clamping cavity 51 on the photovoltaic assembly 4 is improved.

Example 4

Embodiment 4 is based on embodiment 1, a reinforcing rib is formed in the middle of the lower supporting platform 41 at the top of the closed cavity 40, and an underflow rubber groove 43 is correspondingly formed at the inner end of the lower supporting platform 41, and the structure of the underflow rubber groove 43 is similar to that in embodiment 3, and is not described again here. In addition, the vertical blocking beams 52 have a bent arc, as shown in fig. 8, so that the top frame 50 has a straight portion and a bent portion for guiding drainage; the bending portion can be used for guiding drainage, and the bending degree can be adjusted, so that the opening size of the U-shaped clamping cavity 51 can be adjusted. It should be noted that, in the present invention, the vertical blocking beam 52 is not necessarily vertically disposed, and the vertical blocking beam is only disposed in the vertical direction from top to bottom.

Example 5

As shown in fig. 9, a vertical blocking beam 52 is added on the basis of embodiment 1, and the specific structure of the vertical blocking beam 52 is the same as that of the vertical blocking beam 52 in embodiment 4, and is not described again here.

Example 6

Example 6 the opening direction of the U-shaped clamp chamber 51 was changed in addition to example 1. It should be noted that, in the present invention, the opening direction of the U-shaped clamping cavity 51 may face the frame installation area 3, or may face the direction deviating from the frame installation area 3, as shown in fig. 10, specifically, it is enough to be adaptively changed by those skilled in the art, and the present invention is not limited specifically.

The utility model discloses still on above-mentioned frame basis for the photovoltaic module, provide a photovoltaic module, this photovoltaic module contains foretell frame for the photovoltaic module, has this whole advantages of frame for the photovoltaic module, and it is no longer repeated here.

The present invention has been further described with reference to the specific embodiments, but it should be understood that the specific description should not be construed as limiting the spirit and scope of the invention, and various modifications made to the above embodiments by those skilled in the art after reading the present specification are within the scope of the invention.

Claims

1. The utility model provides a frame for photovoltaic module which characterized in that:

bending and molding a first profile plate and a second profile plate for multiple times;

the frame is divided into a frame mounting area, a frame cavity area and a frame clamping area which are sequentially connected from bottom to top, wherein the frame cavity area is arranged at one end of the frame mounting area; the first section bar plate and the second section bar plate at the frame clamping area are at least partially attached, and the free end of the frame clamping area is bent to form a top frame; a U-shaped clamping cavity is defined by the frame clamping area and the top of the closed cavity at the frame cavity area;

2. The bezel for a photovoltaic module according to claim 1, wherein:

the included angle a between the inner side surface of the flow resisting protrusion and the upper surface of the top frame is not more than 90 degrees.

3. The bezel for photovoltaic modules according to claim 1 or 2, wherein:

the vertical blocking beam is vertically arranged, and the bottommost end of the vertical blocking beam is a horizontal plane.

4. The bezel for a photovoltaic module according to claim 1, wherein:

the top frame is of a double-layer structure, is horizontally arranged and comprises an upper top edge and a lower top edge which are sequentially arranged from top to bottom;

the flatness of the upper surface of the upper top edge is +/-0.5 mm;

and/or an intercepting bulge facing to the side of the U-shaped clamping cavity is formed in the middle of the lower top edge, and the intercepting bulge is arranged above the bottommost end of the vertical blocking beam.

5. The bezel for photovoltaic modules according to claim 4, wherein:

the cross section of the intercepting bulge is in an inverted trapezoid shape.

6. The bezel for photovoltaic modules as recited in claim 1, wherein:

and anti-skid grains are formed on the lower surface of the frame mounting area and/or the frame cavity area.

7. The bezel for a photovoltaic module according to claim 1, wherein:

the vertical blocking beam has a bending radian, so that the top frame has a straight part and a bending part.

8. The bezel for a photovoltaic module according to claim 1, wherein:

the top of the closed cavity is provided with a lower supporting table, and the inner side end of the lower supporting table is downwards sunken to form an underflow rubber groove;

and/or a reinforcing rib is formed on the frame on at least one side of the closed cavity.

9. The bezel for photovoltaic modules according to any one of claims 1 to 8, wherein:

the first section bar plate and the second section bar plate are made of zinc-magnesium-aluminum alloy steel and have the thickness of 0.2-2.0 mm.

10. A photovoltaic module characterized by comprising the frame for a photovoltaic module according to any one of claims 1 to 9.