Frame strip and photovoltaic module

Abstract

The utility model relates to the field of solar photovoltaic cells, and provides a frame strip and a photovoltaic assembly, the frame strip comprises a supporting seat and an L-shaped limiting structure, the limiting structure comprises a side limiting part and a top limiting part, and an accommodating space for arranging a photovoltaic laminated piece is arranged between the limiting structure and a supporting surface at the top of the supporting seat; a drainage channel which is through inside and outside is formed in the limiting structure in the direction perpendicular to the outer side face of the side limiting part, and the drainage channel comprises a side cutting area which is through in the side limiting part in the direction perpendicular to the outer side face of the side limiting part and a top cutting area which extends in the same direction on the top limiting part. When accumulated water is generated on the surface of the photovoltaic laminated part in rainy and snowy weather, the accumulated water can flow out from the drainage channel to the side surface, so that dust is prevented from forming accumulated dust after the accumulated water is evaporated to dryness, the cleanliness of the surface of the photovoltaic module is guaranteed, the drainage channel is located in the frame strip, and the top limiting part is kept in a complete structure in the length direction. And the structural strength of the frame strip is ensured.

Description

Technical Field

[0001] The utility model relates to the field of solar photovoltaic cells, in particular to a frame strip and a photovoltaic component comprising the frame strip. Background Art

[0002] With the development of modern industry, the global energy crisis and air pollution problems are becoming increasingly prominent, and the harm to the environment is becoming increasingly prominent; in addition, traditional fuel energy is decreasing day by day. The world has turned its attention to renewable energy, hoping that renewable energy can change the energy structure of mankind and maintain long-term sustainable development. The abundant solar radiation energy is an important renewable energy source, which is inexhaustible, pollution-free, cheap, and freely available to humans. Therefore, photovoltaic modules (solar cells) have become the focus of attention by taking advantage of their ability to convert solar radiation energy into electrical energy.

[0003] The frame of a photovoltaic module is generally a rectangular frame composed of two long frames and two short frames spliced ​​together by corner codes. The cross-section of the frame of a photovoltaic module is mostly C-shaped, including a C-side structure supported on the bottom of the photovoltaic laminate, a B-side structure surrounding the side of the photovoltaic laminate, and an A-side structure pressing the top of the photovoltaic laminate. The frame wraps around the edges of the photovoltaic laminate to prevent the photovoltaic laminate from falling out of the frame under the action of wind and snow loads.

[0004] Since the top of the A-side structure of the frame is higher than the photovoltaic laminate, water accumulates on the surface of the photovoltaic laminate in rainy and snowy weather. After the water evaporates, the dust in the water will adhere to the surface of the photovoltaic laminate, blocking the light and affecting the normal operation of the photovoltaic module. To solve this problem, the related art cuts off part of the A-side structure to form a water guide groove, so that the water can be drained out by the water guide groove.

[0005] However, the disconnection of the A-side structure at the water guide groove will not only reduce the overall structural strength of the frame and shorten the service life of the photovoltaic module, but the right-angle groove shape of the water guide groove is also not conducive to the discharge of accumulated water.

[0006] Therefore, how to provide a frame structure that has high structural strength and can ensure the surface cleanliness of the photovoltaic laminate has become a technical problem that needs to be solved urgently in this field. Utility Model Content

[0007] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a frame strip and a photovoltaic module including the frame strip, wherein the frame strip can improve the structural stability of the photovoltaic module, prevent dust accumulation in the photovoltaic laminate, and ensure the power generation efficiency of the photovoltaic module.

[0008] To achieve the above-mentioned purpose, as one aspect of the utility model, there is provided a frame strip applied to a photovoltaic module, wherein the frame strip includes a support seat and an L-shaped limiting structure, the limiting structure includes a side limiting portion and a top limiting portion, and a accommodating space for arranging a photovoltaic laminate is provided between the limiting structure and the supporting surface at the top of the support seat; a drainage channel extending inside and outside is formed in the limiting structure along a direction perpendicular to the outer side surface of the side limiting portion, and the drainage channel includes a side cut-out area extending in the side limiting portion along a direction perpendicular to the outer side surface of the side limiting portion and a top cut-out area extending on the top limiting portion along a direction perpendicular to the outer side surface of the side limiting portion.

[0009] Optionally, the top limiting portion has a pressing surface opposite to the support seat surface, the top cut-out area is located on one side of the pressing surface, and the dimension of the top cut-out area along the height direction does not exceed the dimension of the top limiting portion along the height direction.

[0010] Optionally, a dimension of a projection of the top cut-off area on the outer side surface of the side limiting portion along the length direction of the frame strip is the same as a dimension of a projection of the side cut-off area on the outer side surface of the side limiting portion along the length direction of the frame strip.

[0011] Optionally, the drainage channel is an oblong hole, and the long side of the oblong hole extends along the length direction of the frame strip.

[0012] Optionally, the length of the short side of the oblong hole is 3 mm to 7 mm, and the length of the long side of the oblong hole is 15 mm to 25 mm.

[0013] Optionally, a dimension of the top cut-off area along the height direction is 0.5 mm to 1.5 mm.

[0014] Optionally, a plurality of the drainage channels are formed on the limiting structure, and the plurality of the drainage channels are symmetrically distributed about the center of the frame strip along the length direction.

[0015] Optionally, three drainage channels are formed on the limiting structure, one of which is located at the center of the frame strip along the length direction, and the other two are symmetrically distributed on both sides of the central drainage channel along the length direction.

[0016] Optionally, the distance between the drainage channels on both sides and the ends of the frame strips is 10 mm to 20 mm.

[0017] Optionally, a plurality of first glue containing grooves are further formed on the pressing surface of the top limiting portion, the first glue containing grooves extend along the length direction of the frame strip, and the first glue containing grooves are distributed on both sides of the top cut-off area along the length direction.

[0018] Optionally, the support seat, the side limiting portion and the top limiting portion are formed as one body.

[0019] Optionally, the frame strip is made of aluminum.

[0020] Optionally, the frame strip is manufactured by an extrusion process.

[0021] Optionally, the height of the support surface gradually decreases from the inside to the outside to form a second glue containing groove.

[0022] Optionally, the support seat includes a supporting portion and a mounting portion, the supporting surface is formed on the supporting portion, the outer surface of the support seat also includes a bottom surface arranged opposite to the supporting surface, the mounting portion is fixedly connected to the support seat, and one side surface of the mounting portion is flush with the bottom surface, and a mounting hole is formed on the mounting portion and passes through the mounting portion along the thickness direction.

[0023] Optionally, the supporting portion includes a top plate, a bottom plate and a pair of side plates, the top plate, the bottom plate and the side plates all extend along the length direction of the frame strip, the top plate and the bottom plate are arranged opposite to each other and the supporting surface is formed on the top plate, the bottom surface is formed on the bottom plate, and the two side plates are arranged opposite to each other and are respectively connected between the edges on the same side of the top plate and the bottom plate.

[0024] Optionally, at least one first reinforcing rib is formed on the surface of the top plate facing the bottom plate, and the first reinforcing rib extends along the length direction of the frame strip.

[0025] Optionally, at least one second reinforcing rib is formed on the surface of the bottom plate facing the top plate, and the second reinforcing rib extends along the length direction of the frame strip.

[0026] Optionally, the end of the frame strip has a connecting bevel, and the connecting bevel faces the inner side of the frame strip.

[0027] Optionally, the connecting bevel forms an angle of 45° with the length direction of the frame strip.

[0028] As a second aspect of the utility model, a photovoltaic module is provided, comprising a photovoltaic laminate and a frame connected to its periphery, wherein the frame comprises the frame strip mentioned above, wherein the frame strip forms at least one side edge of the frame, and the side edge is suitable as the lowest side when the photovoltaic module is installed.

[0029] Optionally, the frame includes a plurality of the frame strips described above, the plurality of frame strips are connected end to end, the photovoltaic laminate is arranged in the accommodating space of the plurality of frame strips, and one end of the drainage channel forms an inlet above the photovoltaic laminate.

[0030] Optionally, adhesive is filled between the bottom of the photovoltaic laminate and the supporting surfaces of the multiple support seats of the frame, between the side edges of the photovoltaic laminate and the multiple side limiting portions of the frame, and between the top of the photovoltaic laminate and the pressing surfaces of the multiple top limiting portions of the frame.

[0031] Optionally, a plurality of first glue containing grooves are also formed on the pressing surface of the top limiting portion, and the first glue containing grooves extend along the length direction of the border strip and are distributed on both sides of the top cut-off area along the length direction; the first glue containing grooves are filled with the adhesive, and the adhesive is not set at the corresponding position of the top cut-off area.

[0032] Optionally, the adhesive is silica gel.

[0033] Optionally, the border includes 4 border strips.

[0034] Optionally, the end of the frame strip has a connecting bevel, the connecting bevel faces the inner side of the frame strip, the connecting bevels of adjacent frame strips abut against each other, and the adjacent frame strips are fixedly connected by angle codes.

[0035] Optionally, the connecting bevel forms an angle of 45° with the length direction of the frame strip.

[0036] In the frame strip and photovoltaic module provided by the utility model, a drainage channel that penetrates inside and outside is formed in the limiting structure of the frame strip, which includes a side cut-out area formed in the side limiting part (i.e., the B-surface structure) and a top cut-out area formed on the top limiting part (i.e., the A-surface structure). After the photovoltaic laminate is installed, the top limiting part abuts against the top surface of the photovoltaic laminate, and its top cut-out area is located above the photovoltaic laminate, thereby forming an inlet of the drainage channel, and the opening of the side cut-out area on the outer side of the side limiting part forms an outlet of the drainage channel, so that the space at the top of the photovoltaic laminate is connected to the outside by the drainage channel.

[0037] When water accumulates on the surface of the photovoltaic laminate in rainy and snowy weather, the accumulated water can flow out to the side of the photovoltaic module through the drainage channel, thereby preventing dust and other debris in the accumulated water from adhering to the surface of the photovoltaic laminate to form dust after the accumulated water evaporates, thereby ensuring the cleanliness of the surface of the photovoltaic module. In addition, the drainage channel is formed inside the frame bar, and the top limit part and other structures still maintain a complete structure along the length direction while achieving the drainage function through the drainage channel, thereby ensuring the structural strength of the frame bar at the drainage channel, and further ensuring the service life of the photovoltaic module.

[0038] Furthermore, the side cut-away area is an oblong hole, thereby being able to reduce the angle structure inside the side cut-away area, reducing the probability of dust accumulation inside the side cut-away area, and further ensuring the smoothness of the outflow of accumulated water. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The utility model is further described below in conjunction with the accompanying drawings:

[0040] Figure 1 It is a structural schematic diagram of the border strip provided by the utility model;

[0041] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle border strip in area A;

[0042] Figure 3 It is a structural schematic diagram of the inner side of the frame strip provided by the utility model;

[0043] Figure 4 It is a partial enlarged schematic diagram of the inner central area of ​​the frame strip provided by the utility model;

[0044] Figure 5 is a schematic cross-sectional view of a frame strip provided by an embodiment of the utility model at a first adhesive containing groove;

[0045] Figure 6 yes Figure 5 A schematic diagram of the connection relationship between the frame strip and the photovoltaic laminate is shown;

[0046] Figure 7 is a schematic cross-sectional view of a frame strip provided by an embodiment of the utility model at a side cut-away area;

[0047] Figure 8 yes Figure 7 A schematic diagram of the connection relationship between the frame strip and the photovoltaic laminate is shown;

[0048] Fig. 9 It is a schematic diagram of the structure of a photovoltaic assembly provided by an embodiment of the utility model;

[0049] Fig.10 yes Fig. 9 A partial enlarged schematic diagram of the photovoltaic module in area B;

[0050] Fig.11 yes Fig. 9 A partial enlarged schematic diagram of the photovoltaic module in area C;

[0051] Fig.12 yes Fig. 9 A partial enlarged schematic diagram of the photovoltaic module in area D.

[0052] Description of reference numerals:

[0053] Support seat 100; support surface 101; bottom surface 102; support part 110; top plate 111; bottom plate 112; side plate 113; first reinforcing rib 114; second reinforcing rib 115; second adhesive groove 116; mounting part 120; limiting structure 200; side limiting part 210; top limiting part 220; first adhesive groove 230; drainage channel 300; side cut-out area 310; top cut-out area 320; pressing surface 301; photovoltaic laminate 10; frame strip 20; adhesive 30. DETAILED DESCRIPTION

[0054] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0055] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present utility model. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0056] In order to solve the above technical problems, as one aspect of the utility model, a frame strip applied to a photovoltaic module is provided, such as Figures 1 to 8 As shown, the frame strip includes a support seat 100 and an L-shaped limiting structure 200, and the limiting structure 200 includes a side limiting portion 210 and a top limiting portion 220. Figure 5 , Figure 7 As shown, there is a storage space for arranging the photovoltaic laminate between the limiting structure 300 and the supporting surface 101 of the supporting seat 100. The limiting structure 200 is formed with an inner and outer through hole (the inner side in the utility model refers to the side facing the center of the photovoltaic laminate along the horizontal direction, specifically Figures 5 to 8 The right side direction in the figure, the outer side refers to the side away from the center of the photovoltaic laminate in the horizontal direction, specifically Figures 5 to 8 The drainage channel 300 includes a side cut-out area 310 that passes through the side limiting portion 210 in a direction perpendicular to the outer side surface of the side limiting portion 210, and a top cut-out area 320 that extends on the top limiting portion 220 in a direction perpendicular to the outer side surface of the side limiting portion 210.

[0057] In the frame strip provided by the present invention, a drainage channel 300 is formed in the limiting structure 200, which includes a side cut-out area 310 formed in the side limiting portion 210 (i.e., the B-side structure) and a top cut-out area 320 formed on the top limiting portion 220 (i.e., the A-side structure). After the photovoltaic laminate is installed, Figure 8 As shown, the top limit portion 220 abuts against the top surface of the photovoltaic laminate, and its top cut-away area 320 is located above the photovoltaic laminate, thereby forming an inlet of the drainage channel 300, and the opening of the side cut-away area 310 on the outer side of the side limit portion 210 forms an outlet of the drainage channel 300, thereby utilizing the drainage channel 300 to connect the space at the top of the photovoltaic laminate with the outside.

[0058] When water accumulates on the surface of the photovoltaic laminate in rainy and snowy weather, the accumulated water can flow out to the side of the photovoltaic module through the drainage channel 300, thereby preventing dust and other debris in the accumulated water from adhering to the surface of the photovoltaic laminate to form dust after the accumulated water evaporates, thereby ensuring the cleanliness of the surface of the photovoltaic module. In addition, the drainage channel 300 is formed inside the frame bar, and the top limit part 220 and other structures still maintain a complete structure along the length direction while achieving the drainage function through the drainage channel 300, thereby ensuring the structural strength of the frame bar at the drainage channel 300, thereby ensuring the service life of the photovoltaic module.

[0059] As an optional implementation of the present utility model, Figure 7 , Figure 8 As shown, the top limit portion 220 has a pressing surface 301 opposite to the support surface 101 of the support seat 100, and the top cut-out area 320 is located on one side of the pressing surface 301. The size of the top cut-out area 320 along the height direction does not exceed the size of the top limit portion 220 along the height direction. That is, in the embodiment of the utility model, the top cut-out area 320 is a groove formed on the pressing surface 301. After the photovoltaic laminate is installed in the frame strip, the top cut-out area 320 and the top surface of the photovoltaic laminate are surrounded to form a complete channel structure.

[0060] As a preferred embodiment of the present invention, Figure 7 , Figure 8 As shown, the dimension of the projection of the top cut-out area 320 on the outer side surface of the side limiting portion 210 along the length direction of the frame strip is the same as the dimension of the projection of the side cut-out area 310 on the outer side surface of the side limiting portion 210 along the length direction of the frame strip, so that there is no step structure at the junction of the inner wall of the side cut-out area 310 and the inner wall of the top cut-out area 320, ensuring that the side walls along the way of accumulated water flowing from the top cut-out area 320 to the side cut-out area 310 are straight and smooth, thereby improving the smoothness of the outflow of accumulated water.

[0061] In the related art, the drainage structure on the top of the frame is mostly rectangular, which is not conducive to the discharge of water, and the corners of the drainage structure are prone to dust accumulation and blockage, thereby affecting the smoothness of the outflow of accumulated water.

[0062] In order to solve this technical problem, as a preferred implementation of the utility model, as Figure 4As shown, the drainage channel 300 is an oblong hole (ie, the cross-sectional profile includes a pair of mutually parallel flat edges and a pair of arc edges transitionally connected between the ends of the two flat edges), and the long side of the oblong hole extends along the length direction of the frame strip.

[0063] In the embodiment of the utility model, the side cut-away area 310 is an oblong hole, thereby reducing the angle structure inside the side cut-away area 310, reducing the probability of dust accumulation inside the side cut-away area 310, and further ensuring the smoothness of the outflow of accumulated water.

[0064] As an optional implementation of the present utility model, Figure 4 As shown, the short side length h1 of the oblong hole is 3 mm to 7 mm, and the long side length w1 of the oblong hole is 15 mm to 25 mm. For example, optionally, the short side length h1 of the oblong hole can be 5 mm, and the long side length w1 of the oblong hole can be 20 mm.

[0065] As an optional implementation of the present utility model, Figure 4 As shown, the dimension h2 of the top cut-away area 320 along the height direction is 0.5 mm to 1.5 mm. For example, optionally, the dimension h2 of the top cut-away area 320 along the height direction may be 1 mm.

[0066] As an optional implementation of the present utility model, Figure 4 As shown, the distance h3 between the bottom of the top cut-out area 320 and the top surface of the top limiting portion 220 is 0.5 mm to 1.5 mm. For example, optionally, the distance h3 between the bottom of the top cut-out area 320 and the top surface of the top limiting portion 220 can be 1 mm.

[0067] As an optional implementation of the present utility model, Figure 1 , Figure 3 As shown, a plurality of drainage channels 300 are formed on the limiting structure 200 , and the plurality of drainage channels 300 are symmetrically distributed about the center of the frame strip along the length direction.

[0068] As an optional implementation of the present utility model, Figure 1 , Figure 3 As shown, three drainage channels 300 are formed on the limiting structure 200, one of the drainage channels 300 is located in the center of the frame strip along the length direction, and the other two drainage channels 300 are symmetrically distributed on both sides of the drainage channel 300 located in the center along the length direction.

[0069] As an optional embodiment of the present invention, the distance between the drainage channels 300 on both sides and the end of the border strip is 10 mm to 20 mm. For example, optionally, the distance between the drainage channels 300 on both sides and the end of the border strip is 15 mm.

[0070] As an optional implementation of the present utility model, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a plurality of first adhesive containing grooves 230 are formed on the pressing surface 301 of the top limiting portion 220 . The first adhesive containing grooves 230 extend along the length direction of the frame strip, and the first adhesive containing grooves 230 are distributed on both sides of the top cut-away area 320 along the length direction.

[0071] It is understandable that the first adhesive groove 230 located at the edge passes through the end surface of the frame strip. In the embodiment of the utility model, the pressing surface 301 is also formed with a first adhesive groove 230. When installing the photovoltaic laminate, Figure 6 As shown, the first adhesive groove 230 can contain the adhesive 30 to prevent the adhesive 30 from overflowing to the light-receiving surface on the top of the photovoltaic laminate, while ensuring the connection strength between the frame and the photovoltaic laminate. Figure 4 As shown, the first adhesive containing groove 230 is staggered with the side cut-away area 310 and the top cut-away area 320 along the length direction, so that Figure 7 , Figure 8 As shown, after bonding, the adhesive 30 in the first adhesive containing groove 230 will not be squeezed out into the drainage channel 300, thereby ensuring the smoothness of draining the accumulated water.

[0072] It is understandable that when applying glue to the first glue groove 230, the opening on the outside of the drainage channel 300 can be sealed by tools such as tape to prevent the adhesive from overflowing through the drainage channel 300. After the adhesive solidifies, a rod-shaped tool can be inserted into the drainage channel 300 to push out the adhesive in the drainage channel 300 to ensure that the drainage channel 300 is unobstructed.

[0073] As an optional implementation of the present invention, the support seat 100, the side limiting portion 210 and the top limiting portion 220 are formed as one body.

[0074] As an optional implementation of the present invention, the frame strip is made of aluminum.

[0075] As an optional implementation mode of the present invention, the border strip is manufactured by an extrusion process. Specifically, a border strip structure without a first glue containing groove 230 is first obtained by an aluminum extrusion process, and then the first glue containing groove 230 is manufactured on both sides of the side cut-off area 310 and the top cut-off area 320 by a cutting process to obtain a border strip.

[0076] As an optional implementation of the present utility model, Figure 5 , Figure 7 As shown, the height of the support surface 101 gradually decreases from the inside to the outside, forming a second glue containing groove 116, so that Figure 8As shown, more adhesive 30 is accommodated at the edge of the photovoltaic laminate, so that when the photovoltaic laminate is deformed under the action of wind and snow loads, more activity space is provided for the edge of the photovoltaic laminate, reducing stress concentration at the edge of the photovoltaic laminate, and further ensuring the overall structural strength of the photovoltaic module.

[0077] As an optional implementation of the present utility model, Figures 5 to 8 As shown, the support seat 100 includes a support portion 110 and a mounting portion 120, a support surface 101 is formed on the support portion 110, and the outer surface of the support seat 100 also includes a bottom surface 102 arranged opposite to the support surface 101, the mounting portion 120 is fixedly connected to the support seat 100, and one side surface of the mounting portion 120 is flush with the bottom surface 102, and a mounting hole is formed on the mounting portion 120 and passes through the mounting portion 120 along the thickness direction.

[0078] As an optional implementation of the present utility model, Figure 5 As shown, the support portion 110 includes a top plate 111, a bottom plate 112 and a pair of side plates 113. The top plate 111, the bottom plate 112 and the side plates 113 all extend along the length direction of the frame strip. The top plate 111 and the bottom plate 112 are arranged opposite to each other and the support surface 101 is formed on the top plate 111, and the bottom surface 102 is formed on the bottom plate 112. The two side plates 113 are arranged opposite to each other and are respectively connected between the edges on the same side of the top plate 111 and the bottom plate 112.

[0079] As an optional implementation of the present utility model, Figure 5 As shown, at least one first reinforcing rib 114 is formed on the surface of the top plate 111 facing the bottom plate 112 , and the first reinforcing rib 114 extends along the length direction of the frame strip.

[0080] As an optional implementation of the present utility model, Figure 5 As shown, at least one second reinforcing rib 115 is formed on the surface of the bottom plate 112 facing the top plate 111 , and the second reinforcing rib 115 extends along the length direction of the frame strip.

[0081] As an optional implementation of the present invention, the end of the frame strip has a connecting slope, and the connecting slope faces the inner side of the frame strip.

[0082] As an optional implementation of the present invention, the connecting slope forms an angle of 45° with the length direction of the frame strip.

[0083] As an optional implementation of the present utility model, Figure 7 As shown, the length w2 of the drainage channel 300 is ≥ 20 mm. For example, optionally, the length w2 of the drainage channel 300 may be 20 mm.

[0084] As a second aspect of the present invention, a photovoltaic module is provided, such as Figures 9 to 12 As shown, the photovoltaic module includes a photovoltaic laminate 10 and a frame. The frame includes a frame strip 20 provided in an embodiment of the utility model. The frame strip 20 forms at least one side of the frame, which is suitable as the lowest side when the photovoltaic module is installed.

[0085] In the photovoltaic module provided by the utility model, a drainage channel 300 is formed in the limiting structure 200 of the frame strip, which includes a side cut-out area 310 formed in the side limiting part 210 (i.e., the B-side structure) and a top cut-out area 320 formed on the top limiting part 220 (i.e., the A-side structure). After the photovoltaic laminate is installed, Figure 8 As shown, the top limit portion 220 abuts against the top surface of the photovoltaic laminate, and its top cut-away area 320 is located above the photovoltaic laminate, thereby forming an inlet of the drainage channel 300, and the opening of the side cut-away area 310 on the outer side of the side limit portion 210 forms an outlet of the drainage channel 300, thereby utilizing the drainage channel 300 to connect the space at the top of the photovoltaic laminate with the outside.

[0086] When water accumulates on the surface of the photovoltaic laminate in rainy and snowy weather, the accumulated water can flow out to the side of the photovoltaic module through the drainage channel 300, thereby preventing dust and other debris in the accumulated water from adhering to the surface of the photovoltaic laminate to form dust after the accumulated water evaporates, thereby ensuring the cleanliness of the surface of the photovoltaic module. In addition, the drainage channel 300 is formed inside the frame bar, and the top limit part 220 and other structures still maintain a complete structure along the length direction while achieving the drainage function through the drainage channel 300, thereby ensuring the structural strength of the frame bar at the drainage channel 300, thereby ensuring the service life of the photovoltaic module.

[0087] As an optional implementation of the present utility model, Figures 9 to 12 As shown, the frame includes multiple frame strips 20 provided by embodiments of the utility model, the multiple frame strips 20 are connected end to end, the edge of the photovoltaic laminate 10 is arranged in the accommodating space of the multiple frame strips 20, and one end of the drainage channel 300 forms an inlet above the photovoltaic laminate 10.

[0088] As an optional embodiment of the utility model, adhesive is filled between the bottom of the photovoltaic laminate 10 and the supporting surface 101 of the multiple supporting seats 100 of the frame, between the side of the photovoltaic laminate 10 and the multiple side limiting portions 210 of the frame, and between the top of the photovoltaic laminate 10 and the pressing surface 301 of the multiple top limiting portions 220 of the frame.

[0089] As an optional implementation of the present utility model, Figure 6As shown, a plurality of first glue containing grooves 230 are also formed on the pressing surface 301 of the top limiting portion 220. The first glue containing grooves 230 extend along the length direction of the frame strip 20 and are distributed on both sides of the top cut-off area 320 along the length direction. The first glue containing grooves 230 are filled with adhesive, and no adhesive is set at the corresponding position of the top cut-off area 320.

[0090] As an optional implementation manner of the present invention, the adhesive is silica gel.

[0091] As an optional implementation of the present utility model, Figures 9 to 12 As shown, the frame includes four frame strips 20 .

[0092] As an optional implementation of the present utility model, Fig. 9 As shown, the length of one pair of the four border strips 20 is greater than the length of the other pair of border strips 20, and each pair of border strips 20 with the same length is arranged relatively parallel, that is, including a pair of long border strips and a pair of short border strips.

[0093] As an optional implementation of the present utility model, Fig. 9 , Fig.10 , Fig.12 As shown, the end of the frame strip 20 has a connecting slope, which faces the inner side of the frame strip 20 , the connecting slopes of adjacent frame strips 20 abut against each other, and the adjacent frame strips 20 are fixedly connected by angle codes.

[0094] As an optional implementation of the present utility model, Fig. 9 , Fig.10 , Fig.12 As shown, the connecting slope forms an angle of 45° with the length direction of the frame strip 20 .

[0095] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A frame strip applied to a photovoltaic module, the frame strip comprising a support seat and an L-shaped limiting structure, the limiting structure comprising a side limiting portion and a top limiting portion, and a receiving space for arranging a photovoltaic laminate between the limiting structure and the supporting surface at the top of the support seat, characterized in that: A drainage channel extending inside and outside is formed in the limiting structure along a direction perpendicular to the outer side surface of the side limiting portion, and the drainage channel includes a side cut-out area extending in the side limiting portion along a direction perpendicular to the outer side surface of the side limiting portion and a top cut-out area extending on the top limiting portion along a direction perpendicular to the outer side surface of the side limiting portion.

2. The border strip according to claim 1, characterized in that: The top limiting portion has a pressing surface opposite to the supporting seat surface, the top cut-out area is located at one side of the pressing surface, and the dimension of the top cut-out area along the height direction does not exceed the dimension of the top limiting portion along the height direction.

3. The border strip according to claim 2, characterized in that: The dimension of the projection of the top cut-off area on the outer side surface of the side limiting portion along the length direction of the frame strip is the same as the dimension of the projection of the side cut-off area on the outer side surface of the side limiting portion along the length direction of the frame strip.

4. The border strip according to claim 3, characterized in that: The drainage channel is an oblong hole, and the long side of the oblong hole extends along the length direction of the frame strip.

5. The border strip according to claim 4, characterized in that: The length of the short side of the oblong hole is 3 mm to 7 mm, and the length of the long side of the oblong hole is 15 mm to 25 mm; the size of the top cut-off area along the height direction is 0.5 mm to 1.5 mm.

6. The border strip according to any one of claims 1 to 5, characterized in that: A plurality of the drainage channels are formed on the limiting structure, and the plurality of the drainage channels are symmetrically distributed about the center of the frame strip along the length direction.

7. The border strip according to claim 6, characterized in that: Three drainage channels are formed on the limiting structure, one of which is located in the center of the frame strip along the length direction, and the other two drainage channels are symmetrically distributed on both sides of the drainage channel located in the center along the length direction.

8. The border strip according to claim 7, characterized in that: The distance between the drainage channels on both sides and the ends of the frame strips is 10 mm to 20 mm.

9. The border strip according to any one of claims 2 to 5, characterized in that: A plurality of first glue containing grooves are also formed on the pressing surface of the top limiting portion. The first glue containing grooves extend along the length direction of the frame strip, and the first glue containing grooves are distributed on both sides of the top cut-off area along the length direction of the frame strip.

10. A photovoltaic module, comprising a photovoltaic laminate and a frame connected to the periphery thereof, characterized in that: The frame comprises the frame strip according to any one of claims 1 to 9, wherein the frame strip forms at least one side edge of the frame, and the side edge is suitable as the lowest side when the photovoltaic module is installed.

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