Photovoltaic module frame, photovoltaic module and photovoltaic system

Abstract

The utility model discloses a photovoltaic module frame, a photovoltaic module and a photovoltaic system, the photovoltaic module frame comprises a frame body, the frame body comprises a first side plate, a middle plate and a bottom plate, the middle plate and the bottom plate are fixed on the first side of the first side plate, the frame body further comprises a second side plate arranged opposite to the first side plate, and the second side plate is connected on the middle plate and / or the bottom plate; the first side plate, the middle plate, the second side plate and the bottom plate define a frame cavity with a side opening, the side opening is formed in the second side plate, and oxidation protection films are arranged on the inner surfaces and the outer surfaces of the first side plate, the middle plate, the second side plate and the bottom plate. In the embodiment of the utility model, the frame body cavity is provided with the side opening, so that charges can enter the frame body cavity through the side opening in the coating process, and the inner surface of the frame body cavity is easily coated with an oxidation protection film.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a photovoltaic component frame, a photovoltaic component and a photovoltaic system. Background Art

[0002] The photovoltaic module includes a laminate and a frame, and the frame generally includes an aluminum alloy frame, a steel frame, etc. The aluminum alloy frame is formed by extruding an aluminum alloy material and includes a closed inner cavity.

[0003] However, conventional aluminum alloy frames cannot meet the requirements of long-term use in corrosive environments such as high temperature, high humidity and heat. Utility Model Content

[0004] The utility model provides a photovoltaic module frame, a photovoltaic module and a photovoltaic system, aiming to at least solve the technical problem in the prior art that conventional aluminum alloy frames cannot meet the requirements of long-term use in corrosive environments such as high temperature, high humidity and heat.

[0005] In a first aspect, an embodiment of the present invention provides a photovoltaic module frame, comprising a frame body, the frame body comprising a first side panel, a middle panel fixed to a first side of the first side panel, and a bottom panel, the frame body further comprising a second side panel disposed opposite the first side panel, the second side panel being connected to the middle panel and / or the bottom panel;

[0006] The first side plate, the middle plate, the second side plate and the bottom plate form a frame cavity with a side opening, the side opening is opened on the second side plate, and the inner and outer surfaces of the first side plate, the middle plate, the second side plate and the bottom plate are all provided with an oxide protective film.

[0007] In an embodiment of the present invention, the frame cavity has a side opening, and during the coating process, electric charges can enter the frame cavity through the side opening, making it easy to coat the inner surface of the frame cavity with an oxide protective film. In addition, in an embodiment of the present invention, the inner and outer surfaces of the first side panel, the middle panel, the second side panel, and the bottom panel are all provided with an oxide protective film. Compared with coating only the outer surface of the frame, the corrosion resistance of the photovoltaic module frame is improved, so that the photovoltaic module frame can be used in corrosive environments such as high temperature and humid heat. In addition, the provision of the side opening also reduces the material cost of the second side panel, thereby reducing the cost of the photovoltaic module frame. In addition, the provision of the second side panel enhances the bending resistance of the frame body, and at the same time, the second side panel also serves as a corner code limiter and fixer.

[0008] Preferably, the thickness of the oxide protective film is greater than or equal to 8 microns and less than or equal to 30 microns.

[0009] The thickness of the oxide protective film is greater than or equal to 8 microns, which can ensure the corrosion resistance of the photovoltaic module frame.

[0010] Preferably, the thickness of the oxide protective film is greater than or equal to 10 microns and less than or equal to 15 microns.

[0011] When the thickness of the oxide protective film is between 10 microns and 15 microns, it helps save costs while ensuring the corrosion resistance of the photovoltaic module frame.

[0012] Preferably, along the direction from the middle plate to the bottom plate, the ratio of the height of the side opening to the height of the frame cavity is 20%-60%.

[0013] When the ratio of the height of the side opening to the height of the frame cavity is between 20% and 60%, the second side plate can be ensured to have a certain height, thereby ensuring the bending resistance of the frame body.

[0014] Preferably, along the direction from the middle plate to the bottom plate, the ratio of the height of the side opening to the height of the frame cavity is 30%-45%.

[0015] When the ratio of the side opening height to the frame cavity height is 30%-45%, the coating of the inner and outer surfaces of the frame cavity can be completed in the same time, avoiding the increase in the coating time of the inner surface of the frame cavity caused by too small side openings.

[0016] Preferably, it further comprises at least one support seat connected to the frame body, wherein the support seat extends into the side opening or the frame cavity;

[0017] Along the extending direction of the frame body, the length of the support base is smaller than the length of the frame body.

[0018] The provision of the support base improves the structural strength of the photovoltaic module frame, thereby improving the overall load-bearing capacity of the photovoltaic module.

[0019] Preferably, the support seat includes a buckling portion, the buckling portion extends into the side opening, and the upper surface and the lower surface of the buckling portion are in contact with the upper side wall and the lower side wall of the side opening respectively.

[0020] When subjected to a positive load, the upper surface of the buckle part provides strong support to the frame body. When subjected to a reverse load, the lower surface of the buckle part provides strong support to the frame body, thereby improving the positive and negative pressure bearing capacity of the photovoltaic module.

[0021] Preferably, the support seat further comprises a first connecting plate connected to the buckling portion and a second connecting plate connected to the first connecting plate;

[0022] One end of the bottom plate away from the first side plate is connected to one end of the second side plate away from the middle plate, the first connecting plate is in contact with the second side plate, and the second connecting plate is in contact with the bottom plate.

[0023] By connecting the end of the bottom plate away from the first side plate with the end of the second side plate away from the middle plate, the part of the bottom plate extending outside the frame cavity is eliminated. This not only reduces the risk of deformation of the conventional frame during sandblasting due to the suspended end of the bottom plate, but also simplifies the structure of the support base, greatly reducing the difficulty of the process mold of the support base.

[0024] Preferably, two adjacent support seats are connected as a whole via the second connecting plate, and a bracket mounting hole is provided on the second connecting plate, and the bracket mounting hole is located between two adjacent frame bodies.

[0025] Preferably, the bottom plate includes a first bottom plate segment located between the first side plate and the second side plate and a second bottom plate segment located on a side of the second side plate away from the first side plate;

[0026] The support seat also includes a first mounting plate, a second mounting plate and a third mounting plate, the first mounting plate is connected to the snap-fit portion through a first connecting plate, the first mounting plate and the third mounting plate are arranged opposite to each other, and the first mounting plate and the third mounting plate are respectively connected to the two ends of the second mounting plate, the first mounting plate, the second mounting plate and the third mounting plate form a support seat mounting groove, and the support seat mounting groove cooperates with the second bottom plate section.

[0027] When subjected to a back load, the frame body is strongly supported by the first mounting plate, thereby improving the negative pressure bearing capacity of the photovoltaic module.

[0028] Preferably, the support base includes a first mounting plate, a second mounting plate and a third mounting plate, the first mounting plate and the third mounting plate are arranged opposite to each other, and the first mounting plate and the third mounting plate are respectively connected to two ends of the second mounting plate, the first mounting plate, the second mounting plate and the third mounting plate surround a support base mounting groove, and the support base mounting groove cooperates with the bottom plate;

[0029] The support seat further includes a connecting portion and a support plate, wherein the support plate is connected to the first mounting plate via the connecting portion, the second side plate is connected to an end of the middle plate away from the first side plate, an avoidance groove is formed on the second side plate, the support plate extends into the frame cavity through the avoidance groove, and the support plate is used to support the middle plate;

[0030] The first mounting plate extends into the frame cavity, and the first mounting plate contacts the bottom plate.

[0031] When subjected to a back load, the first mounting plate provides strong support to the frame body, thereby improving the negative pressure bearing capacity of the photovoltaic module; when subjected to a positive load, the support plate provides strong support to the frame body, thereby improving the positive pressure bearing capacity of the photovoltaic module.

[0032] Preferably, a first mounting hole is formed on the third mounting plate, and the first mounting hole is located on a side of the first side plate away from the second side plate;

[0033] And / or, a second mounting hole is defined on the first mounting plate, a third mounting hole corresponding to the second mounting hole is defined on the bottom plate, and a fourth mounting hole corresponding to the third mounting hole is defined on the third mounting plate.

[0034] Optionally, at least one convex strip is provided on the inner surface of the middle plate facing the bottom plate, the extension direction of the convex strip is consistent with the extension direction of the frame body, and the protruding height of the convex strip is less than the thickness of the middle plate.

[0035] The lower surface of the convex strip away from the middle plate is used to contact the upper surface of the angle code, so that the angle code can be installed stably and prevent the angle code from shaking.

[0036] In a second aspect, an embodiment of the present invention provides a photovoltaic module, comprising a laminate and a photovoltaic module frame as described above and arranged on an edge of the laminate.

[0037] In a third aspect, an embodiment of the present invention provides a photovoltaic system, comprising a pressing block, a photovoltaic bracket and the photovoltaic assembly as described above, wherein the pressing block is used to fix the photovoltaic assembly on the photovoltaic bracket.

[0038] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic structural diagram of a frame body of a long frame in a photovoltaic module frame provided in the first embodiment of the present invention;

[0040] Figure 2 A schematic structural diagram of a frame body of a short frame in a photovoltaic module frame provided in the first embodiment of the present utility model;

[0041] Figure 3 A schematic structural diagram of a support base in a photovoltaic module frame provided in the first embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of the cooperation between the frame body and the support seat in the photovoltaic module frame provided in the first embodiment of the present invention;

[0043] Figure 5 A schematic structural diagram of the frame body in the photovoltaic module frame provided in the second embodiment of the present utility model;

[0044] Figure 6 A schematic diagram of a portion of the structure of the frame body of a photovoltaic module frame provided in the second embodiment of the present utility model;

[0045] Figure 7 for Figure 6 A magnified schematic diagram of point A in the middle;

[0046] Figure 8 A schematic diagram of the structure of a support base in a photovoltaic module frame provided in the second embodiment of the present utility model;

[0047] Figure 9 This is a schematic diagram of the structure of the cooperation between the photovoltaic module frame and the pressing block provided in the second embodiment of the present utility model;

[0048] Figure 10 A schematic diagram of the structure of the photovoltaic module frame and the bracket provided in the second embodiment of the present invention;

[0049] Figure 11 A schematic structural diagram of the frame body of the long frame of the photovoltaic module frame provided in the third embodiment of the present invention;

[0050] Figure 12 A schematic diagram of the structure of a support base in a photovoltaic module frame provided in the third embodiment of the present utility model;

[0051] Figure 13 A side structural diagram of the frame body and the support base provided in the third embodiment of the present invention;

[0052] Figure 14 A schematic diagram of the three-dimensional structure of the frame body and the support base provided in the third embodiment of the present invention;

[0053] Figure 15 This is a structural schematic diagram of the frame body of the short frame in the photovoltaic module frame provided in Example 3 of the present utility model.

[0054] Reference numerals:

[0055] 1-frame body, 11-first side plate, 12-middle plate, 13-bottom plate, 131-third mounting hole, 132-first bottom plate segment, 133-second bottom plate segment, 14-second side plate, 141-avoidance groove, 15-top plate, 16-frame cavity, 17-side opening, 18-laminate mounting groove, 19-rib, 2-support seat, 21-first mounting plate, 211-second mounting hole, 22-second mounting Plate, 23-third mounting plate, 231-first mounting hole, 232-fourth mounting hole, 24-fastening portion, 25-support plate, 26-connecting portion, 27-support seat mounting groove, 28-first connecting plate, 29-second connecting plate, 291-bracket mounting hole, 3-laminate, 4-pressing block, 41-pressing plate portion, 42-side plate portion, 43-connecting plate portion, 5-photovoltaic bracket, 51-purlin, 6-fastener. DETAILED DESCRIPTION

[0056] The following describes exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0057] In a first aspect, an embodiment of the present utility model discloses a photovoltaic module frame, and the structure of the photovoltaic module frame has the following embodiments.

[0058] Example 1

[0059] Reference Figure 1 and Figure 2 The photovoltaic module frame includes a frame body 1, the frame body 1 includes a first side panel 11, a middle panel 12 fixed to the first side of the first side panel 11, and a bottom panel 13. The frame body 1 also includes a second side panel 14 arranged opposite to the first side panel 11, and the second side panel 14 is connected to the middle panel 12 and / or the bottom panel 13; the first side panel 11, the middle panel 12, the second side panel 14 and the bottom panel 13 form a frame cavity 16 with a side opening 17, and the side opening 17 is opened on the second side panel 14. The inner and outer surfaces of the first side panel 11, the middle panel 12, the second side panel 14 and the bottom panel 13 are all provided with an oxide protective film.

[0060] Specifically, the photovoltaic module frame can be a long frame arranged on the edge of the long side of the laminate 3, or a short frame arranged on the edge of the short side of the laminate 3. For example, Figure 1 The frame body 1 shown in FIG is a frame body 1 of a long frame. Figure 2The frame body 1 shown in the figure is a frame body 1 of a short frame. The difference between the frame body 1 of a long frame and the frame body 1 of a short frame can be as follows: the end of the bottom plate 13 of the frame body 1 of the long frame away from the first side plate 11 is connected to the end of the second side plate 14 away from the middle plate 12, while the end of the bottom plate 13 of the frame body 1 of the short frame away from the first side plate 11 protrudes from the second side plate 14.

[0061] The frame body 1 can be made of aluminum alloy or steel to protect the laminate. The frame body 1 is preferably made of aluminum alloy and can be extruded from the aluminum alloy. The first side panel 11, middle panel 12, bottom panel 13, and second side panel 14 included in the frame body 1 can be integrally formed or manufactured separately and then fixedly connected by welding or other methods.

[0062] The frame body 1 also includes a top plate 15 fixed to the first side of the first side plate 11. The top plate 15, the first side plate 11, and the middle plate 12 form a laminate mounting groove 18. The side of the laminate exposed to light is the light-facing side, and the side of the laminate opposite the light-facing side is the backlight side. The middle plate 12 can be bonded to the backlight side of the laminate using silicone. The laminate 3 is typically rectangular or right rectangular in shape.

[0063] Reference Figure 1 The second side panel 14 can be connected to the middle panel 12 and the bottom panel 13. In this case, the side opening 17 is provided in the middle of the second side panel 14. The side opening 17 extends through the second side panel 14 along its thickness. The side opening 17 can also extend through the second side panel 14 along its length, where the length of the second side panel 14 is consistent with the length of the photovoltaic module frame.

[0064] The photovoltaic module also includes a corner bracket, which connects the two photovoltaic module frames at a corner of the photovoltaic module. The provision of the second side panel 14 enhances the bending resistance of the frame body 1 and also serves to limit and secure the corner bracket. The second side panel 14 can be riveted to secure the corner bracket, in which case the second side panel 14 is provided with rivet points. Alternatively, the bottom panel 13 can also be riveted to secure the corner bracket, in which case the bottom panel 13 is provided with rivet points.

[0065] Along the direction from the middle plate 12 to the bottom plate 13, the ratio of the height of the side opening 17 to the height of the frame cavity 16 can be 20%-60%. Figure 1 The height of the side opening 17 can be referred to Figure 1 The height of the frame cavity 16 can be referred to as H1 shown in FIG. Figure 1The sum of H1 and H2 is equal to H. The height H2 of the second side panel 14 can be 20% H, 40% H, 50% H, 60% H, 70% H, 80% H, etc.

[0066] The inner surface of the first side plate 11 is the surface of the first side plate 11 that is close to the frame cavity 16, and the outer surface of the first side plate 11 is the surface of the first side plate 11 that is away from the frame cavity 16. The inner surface of the middle plate 12 is the surface of the middle plate 12 that is close to the frame cavity 16, and the outer surface of the middle plate 12 is the surface of the middle plate 12 that is away from the frame cavity 16. The inner surface of the second side plate 14 is the surface of the second side plate 14 that is close to the frame cavity 16, and the outer surface of the second side plate 14 is the surface of the second side plate 14 that is away from the frame cavity 16. The inner surface of the bottom plate 13 is the surface of the bottom plate 13 that is close to the frame cavity 16, and the outer surface of the bottom plate 13 is the surface of the bottom plate 13 that is away from the frame cavity 16. The inner and outer surfaces of the top plate 15 may also be provided with an oxide protective film. The inner surface of the top plate 15 refers to the surface of the top plate 15 that is close to the laminate mounting groove 18, and the outer surface of the top plate 15 refers to the surface of the top plate 15 that is away from the laminate mounting groove 18.

[0067] The oxide protective film can be plated on the first side plate 11, the middle plate 12, the second side plate 14, and the bottom plate 13 by anodizing. When plating the oxide protective film, the frame body 1 made of an aluminum alloy can be placed in an electrolyte and electrolyzed by anodizing the frame body 1, thereby forming a layer of oxide protective film on the inner and outer surfaces of the first side plate 11, the middle plate 12, the second side plate 14, and the bottom plate 13. Because the frame cavity 16 has a side opening 17, there is an electric charge in the frame cavity 16 during the coating process, thereby enabling the coating of the inner surface of the frame cavity 16.

[0068] The cavity of a conventional aluminum alloy frame has no protective film or the thickness of the protective film is relatively thin, which affects the corrosion resistance of the aluminum alloy frame. Generally, the problem of electroplating in the cavity can be solved by setting an electrode in the cavity during electroplating. However, since the aluminum alloy frame is very long before being cut and the cavity is relatively narrow, a very long electrode is required to penetrate into the cavity, and the electrode cannot contact the inner wall of the cavity. It is difficult to achieve film coating of the closed cavity in the aluminum alloy frame in terms of technology. In addition, the closed cavity in the existing aluminum alloy frame forms a cavity in the electrolyte, resulting in no charge in the inner cavity, making it difficult to coat the closed inner cavity in the aluminum alloy frame, and it is difficult to achieve film coating of the closed cavity in the aluminum alloy frame.

[0069] In the embodiment of the present invention, the frame cavity 16 has a side opening 17. During the coating process, electric charges can enter the frame cavity 16 through the side opening 17, making it easy to plate an oxide protective film on the inner surface of the frame cavity 16. In addition, in the embodiment of the present invention, the inner and outer surfaces of the first side plate 11, the middle plate 12, the second side plate 14 and the bottom plate 13 are all provided with an oxide protective film. Compared with coating only the outer surface of the frame, the corrosion resistance of the photovoltaic module frame is improved, thereby enabling the photovoltaic module frame to be used in corrosive environments such as high temperature and humid heat. In addition, the provision of the side opening 17 also reduces the material cost of the second side plate 14, thereby reducing the cost of the photovoltaic module frame.

[0070] It should be noted that the high temperature, hot and humid corrosive environment may be an environment at sea, on the water surface, on a mudflat, or the like.

[0071] The thickness of the first side panel 11 can be 1.8mm-2.5mm. The thickness of the first side panel 11 can be specifically 1.8mm, 1.9mm, 2mm, 2.1mm, 2.5mm, etc. The thickness of the bottom panel 13 can be 3.5mm-4.5mm. The thickness of the bottom panel 13 can be specifically 3.5mm, 3.7mm, 3.8mm, 4mm, 4.5mm, etc. Along the width direction of the photovoltaic module frame, the width of the bottom panel 13 can be 19mm-20.5mm. The width direction of the photovoltaic module frame can refer to Figure 1 The direction indicated by the arrow C in the figure. The width of the bottom plate 13 can be 19 mm, 19.2 mm, 19.5 mm, 20 mm, 20.5 mm, etc. The thickness of the top plate 15 can be 3 mm to 4 mm. The thickness of the top plate 15 can be 3 mm, 3.2 mm, 3.5 mm, 3.8 mm, 4 mm, etc. When the thickness of the first side plate 11, the thickness of the bottom plate 13, and the thickness of the top plate 15 are within the above ranges, the load strength of the frame body 1 can be greatly improved.

[0072] In a preferred embodiment of the present invention, the thickness of the oxide protective film is greater than or equal to 8 microns and less than or equal to 30 microns. The thickness of the oxide protective film is preferably between 10 microns and 15 microns. The thickness of the oxide protective film can be 10 microns, 15 microns, 16 microns, 1 micron, 20 microns, 30 microns, etc. In the embodiment of the present invention, the thickness of the oxide protective film is greater than or equal to 8 microns, which can ensure the corrosion resistance of the photovoltaic module frame. When the thickness of the oxide protective film is between 10 microns and 15 microns, it is beneficial to save costs while ensuring the corrosion resistance of the photovoltaic module frame.

[0073] In a preferred embodiment of the present invention, along the direction from the middle plate 12 to the bottom plate 13 , the ratio of the height of the side opening 17 to the height of the frame cavity 16 is 20%-60%.

[0074] Specifically, the height of the side opening 17 can be referred to Figure 1 and Figure 8 The height of the frame cavity 16 can be referred to as H1 shown in FIG. Figure 8 The height H1 of the side opening 17 can be 20% H, 30% H, 40% H, 50% H, 60% H, etc. When the ratio of the height of the side opening 17 to the height of the frame cavity 16 is between 20% and 60%, the second side plate 14 can be ensured to have a certain height, thereby ensuring the bending resistance of the frame body 1.

[0075] The ratio of the height of the side opening 17 to the height of the frame cavity 16 along the direction from the middle plate 12 to the bottom plate 13 is preferably 30%-45%. When the ratio of the height of the side opening 17 to the height of the frame cavity 16 is 30%-45%, the coating of the inner and outer surfaces of the frame cavity 16 can be completed in the same amount of time, thereby avoiding the increase in the coating time of the inner surface of the frame cavity 16 caused by the side opening 17 being too small.

[0076] In a preferred embodiment of the present invention, referring to Figure 3 and Figure 4 The photovoltaic module frame also includes at least one support base 2 connected to the frame body 1, and the support base 2 extends into the frame cavity 16; along the extension direction of the frame body 1, the length of the support base 2 is less than the length of the frame body 1.

[0077] Specifically, the support base 2 is connected to the frame body 1 of the long frame. The number of support bases 2 connected to a single frame body 1 can be set according to actual needs. For example, the number of support bases 2 connected to a single frame body 1 can be one, two, three, four, etc. When there are multiple support bases 2 connected to a single frame body 1, the multiple support bases 2 are spaced apart along the extension direction of the frame body 1. The extension direction of the frame body 1 is consistent with the length direction of the photovoltaic module frame.

[0078] The support seat 2 is preferably located at the junction of the frame body 1 and the purlin 51 in the photovoltaic bracket 5. The frame body 1 and the support seat 2 can be directly fixed to the purlin 51 by the fastener 6. The frame body 1 and the support seat 2 can also be fixed to the purlin 51 by the pressing block 4 and the fastener 6 to ensure the strength and installation stability of the photovoltaic module frame. The extension direction of the frame body 1 is consistent with the length direction of the photovoltaic module frame. The length of the support seat 2 is preferably less than one tenth of the length of the frame body 1. By setting the support seat 2, the structural strength of the photovoltaic module frame is improved, thereby improving the overall load-bearing capacity of the photovoltaic module.

[0079] The support base 2 includes a buckling portion 24 , which extends into the side opening, and the upper surface and the lower surface of the buckling portion 24 are in contact with the upper side wall and the lower side wall of the side opening 17 respectively.

[0080] The buckle part 24 can be a U-shaped structure. The inner surface of the buckle part 24 close to the frame cavity 16 is preferably flush with the inner surface of the second side plate 14 close to the frame cavity 16. The inner surface of the buckle part 24 close to the frame cavity 16 can also protrude toward the frame cavity 16 from the inner surface of the second side plate 14 close to the frame cavity 16. In the embodiment of the present utility model, when subjected to a positive load, the frame body 1 is strongly supported by the upper surface of the buckle part 24, and when subjected to a reverse load, the frame body 1 is strongly supported by the lower surface of the buckle part 24, thereby improving the positive and negative pressure bearing capacity of the photovoltaic module.

[0081] In a preferred embodiment of the utility model, the support seat 2 also includes a first connecting plate 28 connected to the snap-fit portion 24 and a second connecting plate 29 connected to the first connecting plate 28; the end of the bottom plate 13 away from the first side plate 11 is connected to the end of the second side plate 14 away from the middle plate 12, the first connecting plate 28 is in contact with the second side plate 14, and the second connecting plate 29 is in contact with the bottom plate 13.

[0082] The end of the bottom plate 13 away from the first side plate 11 is connected to the end of the second side plate 14 away from the middle plate 12. In other words, the end of the bottom plate 13 away from the first side plate 11 does not protrude from the second side plate 14, and in other words, the bottom plate 13 does not extend outside the frame cavity 16. The connection between the bottom plate 13 and the second side plate 14 forms a closed right angle. By configuring the end of the bottom plate 13 away from the first side plate 11 to be connected to the end of the second side plate 14 away from the middle plate 12, the portion of the bottom plate 13 extending outside the frame cavity 16 is eliminated. This not only reduces the risk of deformation during sandblasting caused by the suspended end of the bottom plate in conventional frames, but also simplifies the structure of the support base 2, greatly reducing the difficulty of the mold manufacturing process for the support base 2.

[0083] In a preferred embodiment of the utility model, two adjacent support bases 2 are connected as a whole via a second connecting plate 29 . A bracket mounting hole 291 is provided on the second connecting plate 29 . The bracket mounting hole 291 is located between two adjacent frame bodies 1 .

[0084] The frame bodies 1 of two adjacent photovoltaic modules share a support base 2 that is connected as one. The shape of the bracket mounting hole 291 can be circular, square, waist-shaped, etc. The bracket mounting hole 291 is used for passing the fastener 6 to connect to the photovoltaic bracket 5 through the fastener 6.

[0085] In a preferred embodiment of the present invention, referring to Figure 1At least one ridge 19 is provided on the inner surface of the middle plate 12 facing the bottom plate 13. This ridge 19 extends in the same direction as the frame body 1 and extends to a height less than the thickness of the middle plate 12. Specifically, if multiple ridges 19 are provided, they are spaced apart along the width of the photovoltaic module frame. The lower surface of the ridge 19, facing away from the middle plate 12, is designed to contact the upper surface of the corner bracket, ensuring a stable installation and preventing the bracket from shaking.

[0086] Aluminum alloys were tested under accelerated outdoor and laboratory conditions, and were calculated based on a five-year outdoor corrosion environment. In one set of data, the yield strength of the existing frame without an oxide protective film was 235 MPa, while the yield strength of the photovoltaic module frame with an oxide protective film provided by the embodiment of the present invention was 264 MPa. This represents a 12.3% increase in the yield strength of the photovoltaic module frame provided by the embodiment of the present invention. In another set of data, the yield strength of the existing frame without an oxide protective film was 261 MPa, while the yield strength of the photovoltaic module frame with an oxide protective film provided by the embodiment of the present invention was 293 MPa. This represents a 12.2% increase in the yield strength of the photovoltaic module frame provided by the embodiment of the present invention. The above data demonstrate that after both the inner and outer surfaces of the aluminum alloy frame are anodized, their corrosion resistance is significantly improved in a long-lasting corrosion environment.

[0087] Example 2

[0088] Reference Figures 5 to 10 One of the differences between the second embodiment and the first embodiment is that the second side plate 14 is only connected to the middle plate 12 . In this case, the side opening 17 extends all the way to the bottom plate 13 .

[0089] In the second embodiment, the second side plate 14 is connected to the end of the middle plate 12 away from the first side plate 11. The length direction of the second side plate 14 is consistent with the length direction of the photovoltaic module frame. The length direction of the photovoltaic module frame can be referred to Figure 6 The height of the second side plate 14 can be in the direction indicated by the arrow D. Along the direction from the middle plate 12 to the bottom plate 13, the ratio of the height of the second side plate 14 to the height of the frame cavity 16 can be 40%-80%. Figure 5 The height of the side opening 17 can be referred to as H2 shown in FIG. Figure 5 The sum of H1 and H2 is equal to the height H of the frame cavity 16. The height H2 of the second side plate 14 can be 40% H, 50% H, 60% H, 70% H, 80% H, etc.

[0090] The second difference between the second embodiment and the first embodiment is that an avoidance groove 141 is formed on the second side plate 14 .

[0091] The third difference between the second embodiment and the first embodiment is that the structure of the support base 2 is different, and the support base 2 extends into the frame cavity 16 .

[0092] In embodiment 2, the support seat 2 includes a first mounting plate 21, a second mounting plate 22 and a third mounting plate 23. The first mounting plate 21 and the third mounting plate 23 are arranged opposite to each other, and the first mounting plate 21 and the third mounting plate 23 are respectively connected to the two ends of the second mounting plate 22; the first mounting plate 21, the second mounting plate 22 and the third mounting plate 23 form a support seat mounting groove 27, and the support seat mounting groove 27 cooperates with the base plate 13; the support seat 2 also includes a support plate 25 connected to the first mounting plate 21, the support plate 25 passes through the avoidance groove 141 and extends into the frame cavity 16, and the support plate 25 is used to support the middle plate 12; the first mounting plate 21 extends into the frame cavity 16, and the first mounting plate 21 is in contact with the base plate 13.

[0093] Specifically, the first mounting plate 21 and the third mounting plate 23 are arranged horizontally, and the second mounting plate 22 is arranged vertically. The thickness of the support seat mounting groove 27 matches the thickness of the base plate 13, and the thickness of the support seat mounting groove 27 is preferably equal to the thickness of the base plate 13. The first mounting plate 21 contacts the inner surface of the base plate 13 close to the frame cavity 16, and the third mounting plate 23 contacts the outer surface of the base plate 13 away from the frame cavity 16. Along the width direction of the photovoltaic module frame, the width of the third mounting plate 23 is preferably greater than the width of the base plate 13. In the embodiment of the present utility model, when subjected to a back load, the frame body 1 is strongly supported by the first mounting plate 21, thereby improving the negative pressure bearing capacity of the photovoltaic module.

[0094] The support plate 25 is connected to the first mounting plate 21 via a connecting portion 26 . The connecting portion 26 is located in the frame cavity 16 , and the connecting portion 26 can contact the first side plate 11 . Figure 8 The support seat 2 shown in the figure is in a right-angled S-shape. The support plate 25 can directly contact the middle plate 12. The support plate 25 can also contact the ridge 19 provided on the middle plate 12. The opening of the avoidance groove 141 faces the bottom plate 13. Along the length direction of the photovoltaic module frame, the length of the avoidance groove 141 matches the length of the support plate 25. The length of the avoidance groove 141 is preferably greater than or equal to the length of the support plate 25. The height of the avoidance groove 141 is less than or equal to the height of the second side plate 14. In the embodiment of the utility model, when subjected to a positive load, the frame body 1 is strongly supported by the support plate 25, thereby improving the positive pressure bearing capacity of the photovoltaic module.

[0095] A first mounting hole 231 is defined in the third mounting plate 23. The first mounting hole 231 is located on the side of the first side plate 11 away from the second side plate 14. The first mounting hole 231 can be circular, square, or waist-shaped. The first mounting hole 231 is configured to allow a fastener 6 to pass through, thereby connecting the fastener 6 to the photovoltaic bracket 5.

[0096] Example 3

[0097] Reference Figures 11 to 15 The difference between the third embodiment and the first embodiment is that the end of the bottom plate 13 away from the first side plate 11 protrudes from the second side plate 14, and except for the buckle portion 24 and the first connecting plate 28 in the support base 2, the other structures in the support base 2 are different.

[0098] In embodiment three, the bottom plate 13 includes a first bottom plate section 132 located between the first side plate 11 and the second side plate 14 and a second bottom plate section 133 located on the side of the second side plate 14 away from the first side plate 11; the support seat 2 also includes a first mounting plate 21, a second mounting plate 22 and a third mounting plate 23, the first mounting plate 21 is connected to the snap-fit portion 24 through a first connecting plate 28, the first mounting plate 21 and the third mounting plate 23 are arranged opposite to each other, and the first mounting plate 21 and the third mounting plate 23 are respectively connected to the two ends of the second mounting plate 22; the first mounting plate 21, the second mounting plate 22 and the third mounting plate 23 form a support seat mounting groove 27, and the support seat mounting groove 27 cooperates with the second bottom plate section 133.

[0099] Specifically, the first mounting plate 21 and the third mounting plate 23 are arranged horizontally, and the second mounting plate 22 is arranged vertically. The thickness of the support seat mounting groove 27 matches the thickness of the base plate 13, and the thickness of the support seat mounting groove 27 is preferably equal to the thickness of the base plate 13. The first mounting plate 21 contacts the inner surface of the base plate 13 close to the frame cavity 16, and the third mounting plate 23 contacts the outer surface of the base plate 13 away from the frame cavity 16. Along the width direction of the photovoltaic module frame, the width of the third mounting plate 23 is preferably greater than the width of the base plate 13. In the embodiment of the present utility model, when subjected to a back load, the frame body 1 is strongly supported by the first mounting plate 21, thereby improving the negative pressure bearing capacity of the photovoltaic module.

[0100] In the third embodiment, a second mounting hole 211 is provided on the first mounting plate 21, a third mounting hole 131 corresponding to the second mounting hole 211 is provided on the base plate 13, and a fourth mounting hole 232 corresponding to the third mounting hole 131 is provided on the third mounting plate 23. The second mounting hole 211, the third mounting hole 131, and the fourth mounting hole 232 can all be in the shape of a circle, a square, a waist, or the like. The first mounting plate 21, the base plate 13, and the third mounting plate 23 can be connected by bolts. The second mounting hole 211, the third mounting hole 131, and the fourth mounting hole 232 are used for passing bolts. By providing the second mounting hole 211, the third mounting hole 131, and the fourth mounting hole 232, the first mounting plate 21, the base plate 13, and the third mounting plate 23 can be connected by bolts to ensure the stable installation of the support base 2.

[0101] In a second aspect, an embodiment of the present invention further discloses a photovoltaic module, comprising a laminate 3 and a photovoltaic module frame provided on an edge of the laminate 3 as provided in any one of the above items.

[0102] Since the photovoltaic module includes the above-mentioned photovoltaic module frame, it also has the beneficial effects of the above-mentioned photovoltaic module frame, which will not be described in detail here.

[0103] The laminate 3 may include a glass cover, an upper encapsulation film, a battery string, a lower encapsulation film, and a backsheet, arranged in sequence. The photovoltaic module includes at least one photovoltaic module frame provided in the first aspect. The number of photovoltaic module frames provided in the first aspect included in the photovoltaic module may be one, two, three, four, or the like.

[0104] ANSYS simulation software was used to perform static load positive pressure and negative pressure comparison calculations on the photovoltaic module provided by the embodiment of the utility model and the existing photovoltaic module. The calculation results are shown in Tables 1 and 2 below.

[0105] Table 1

[0106] Deformation under positive pressure (mm) Deformation under negative pressure (mm) Existing photovoltaic panels 37.67 39.38 Photovoltaic module of the present invention 38.04 35.20

[0107] Table 2

[0108] Frame stress under positive pressure (MPa) Frame stress under negative pressure (MPa) Existing photovoltaic panels 205.27 213.35 Photovoltaic module of the present invention 176.07 189.01

[0109] Judging from the above simulation calculation results, the photovoltaic module provided by the embodiment of the present invention has significantly reduced frame stress under positive and negative pressure conditions and deformation under negative pressure conditions, indicating that the load-bearing capacity of the photovoltaic module provided by the embodiment of the present invention is significantly improved compared with traditional photovoltaic modules.

[0110] In a third aspect, an embodiment of the present invention provides a photovoltaic system, comprising a pressing block 4 , a photovoltaic bracket 5 and a photovoltaic assembly as provided in the second aspect above, wherein the pressing block 4 is used to fix the photovoltaic assembly on the photovoltaic bracket 5 .

[0111] The pressure block 4 includes a connected pressure plate portion 41, a side plate portion 42, and a connecting plate portion 43. The pressure plate portion 41 is used to compress the top plate 15 in the frame body 1. The side plate portion 42 can contact the first side plate 11 in the frame body 1. The connecting plate portion 43 is provided with a fifth mounting hole for passing a fastener 6. The fastener 6 can be a bolt, etc. When the photovoltaic module is fixed to the photovoltaic bracket 5 by the pressure block 4 and the fastener 6, the fastener 6 passes through the fifth mounting hole on the connecting plate portion 43, the first mounting hole 231 on the third mounting plate 23 in the second embodiment, and the photovoltaic bracket 5, and then is screwed to the nut.

[0112] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0113] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A photovoltaic module frame, characterized in that: The frame body comprises a first side panel, a middle panel fixed to a first side of the first side panel, and a bottom panel, and the frame body further comprises a second side panel arranged opposite to the first side panel, the second side panel being connected to the middle panel and / or the bottom panel; The first side plate, the middle plate, the second side plate and the bottom plate form a frame cavity with a side opening, the side opening is opened on the second side plate, and the inner and outer surfaces of the first side plate, the middle plate, the second side plate and the bottom plate are all provided with an oxide protective film.

2. The photovoltaic module frame according to claim 1, characterized in that: The thickness of the oxide protection film is greater than or equal to 8 micrometers and less than or equal to 30 micrometers.

3. The photovoltaic module frame according to claim 2, characterized in that: The thickness of the oxide protection film is greater than or equal to 10 microns and less than or equal to 15 microns.

4. The photovoltaic module frame according to claim 1, characterized in that: Along the direction from the middle plate to the bottom plate, the ratio of the height of the side opening to the height of the frame cavity is 20%-60%.

5. The photovoltaic module frame according to claim 4, characterized in that: Along the direction from the middle plate to the bottom plate, the ratio of the height of the side opening to the height of the frame cavity is 30%-45%.

6. The photovoltaic module frame according to any one of claims 1 to 5, characterized in that: It also includes at least one support seat connected to the frame body, the support seat extending into the side opening or the frame cavity; Along the extending direction of the frame body, the length of the support base is smaller than the length of the frame body.

7. The photovoltaic module frame according to claim 6, characterized in that: The support seat includes a buckling portion, the buckling portion extends into the side opening, and the upper surface and the lower surface of the buckling portion are in contact with the upper side wall and the lower side wall of the side opening respectively.

8. The photovoltaic module frame according to claim 7, characterized in that: The support seat further includes a first connecting plate connected to the buckling portion and a second connecting plate connected to the first connecting plate; One end of the bottom plate away from the first side plate is connected to one end of the second side plate away from the middle plate, the first connecting plate is in contact with the second side plate, and the second connecting plate is in contact with the bottom plate.

9. The photovoltaic module frame according to claim 8, characterized in that: The two adjacent support bases are connected as a whole through the second connecting plate. The second connecting plate is provided with a bracket mounting hole, and the bracket mounting hole is located between the two adjacent frame bodies.

10. The photovoltaic module frame according to claim 7, characterized in that: The bottom plate includes a first bottom plate section located between the first side plate and the second side plate and a second bottom plate section located on a side of the second side plate away from the first side plate; The support seat also includes a first mounting plate, a second mounting plate and a third mounting plate, the first mounting plate is connected to the snap-fit portion through a first connecting plate, the first mounting plate and the third mounting plate are arranged opposite to each other, and the first mounting plate and the third mounting plate are respectively connected to the two ends of the second mounting plate, the first mounting plate, the second mounting plate and the third mounting plate form a support seat mounting groove, and the support seat mounting groove cooperates with the second bottom plate section.

11. The photovoltaic module frame according to claim 6, characterized in that: The support base includes a first mounting plate, a second mounting plate and a third mounting plate, the first mounting plate and the third mounting plate are arranged opposite to each other, and the first mounting plate and the third mounting plate are respectively connected to the two ends of the second mounting plate, the first mounting plate, the second mounting plate and the third mounting plate surround a support base mounting groove, and the support base mounting groove cooperates with the bottom plate; The support seat further includes a connecting portion and a support plate, wherein the support plate is connected to the first mounting plate via the connecting portion, the second side plate is connected to an end of the middle plate away from the first side plate, an avoidance groove is formed on the second side plate, the support plate extends into the frame cavity through the avoidance groove, and the support plate is used to support the middle plate; The first mounting plate extends into the frame cavity, and the first mounting plate contacts the bottom plate.

12. The photovoltaic module frame according to claim 10 or 11, characterized in that: A first mounting hole is formed on the third mounting plate, and the first mounting hole is located on a side of the first side plate away from the second side plate; And / or, a second mounting hole is defined on the first mounting plate, a third mounting hole corresponding to the second mounting hole is defined on the bottom plate, and a fourth mounting hole corresponding to the third mounting hole is defined on the third mounting plate.

13. The photovoltaic module frame according to any one of claims 1 to 5, characterized in that: At least one convex strip is provided on the inner surface of the middle plate facing the bottom plate. The extending direction of the convex strip is consistent with the extending direction of the frame body. The protruding height of the convex strip is less than the thickness of the middle plate.

14. A photovoltaic module, characterized in that: The photovoltaic assembly frame comprises a laminate and the photovoltaic assembly frame according to any one of claims 1 to 13 arranged on the edge of the laminate.

15. A photovoltaic system, characterized in that: It comprises a pressing block, a photovoltaic bracket and the photovoltaic assembly as claimed in claim 14, wherein the pressing block is used to fix the photovoltaic assembly on the photovoltaic bracket.

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