Frame of photovoltaic module, photovoltaic module and photovoltaic system

Abstract

The utility model discloses a frame of a photovoltaic module, the photovoltaic module and a photovoltaic system. The frame of the photovoltaic module comprises a top plate, a first side plate, a second side plate, a third side plate, a bearing plate, a bottom plate and a pressing block crimping part. The top plate, the first side plate and the bearing plate define a laminated part mounting part, and the top plate meets the condition that when the laminated part is mounted on the laminated part mounting part, the orthographic projection of the top plate on the bearing plate and the orthographic projection of the laminated part on the bearing plate are not overlapped; the second side plate comprises a transition part and a first side part, the first end and the second end of the transition part are connected with the first side plate and the first side part respectively, and the second end of the transition part is closer to the third side plate than the first end of the transition part; the pressing block crimping part is arranged at the end, away from the transition part, of the first side part. According to the utility model, the pressing block does not shield the light-facing surface of the laminated piece, and the top plate does not cover the light-facing surface of the laminated piece, so that the light-facing area of the laminated piece can be increased, and the generating capacity can be improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a frame for a photovoltaic module, a photovoltaic module, and a photovoltaic system. Background Technology

[0002] Photovoltaic modules consist of a laminate and a frame surrounding the laminate. Conventional frames typically have a protruding top surface (A-side) that protrudes from the laminate, making them prone to dust accumulation. To reduce dust accumulation, the A-side is usually removed, resulting in a frame without an A-side.

[0003] Currently, photovoltaic modules, including those without an A-side frame, require the use of pressure blocks during installation. These pressure blocks are typically fitted with rubber pads and pressed onto the front of the laminate.

[0004] However, when the pressure block is pressed onto the front of the laminate with a rubber pad, it will block the edge of the laminate, thereby reducing the light-facing area of ​​the laminate and affecting the light-gathering of the photovoltaic module. Utility Model Content

[0005] This utility model provides a frame for a photovoltaic module, a photovoltaic module, and a photovoltaic system, aiming to at least solve the technical problem in the prior art where, when a pressure block is pressed with a rubber pad onto the front of a laminate, it will block the edge of the laminate, thereby reducing the light-facing area of ​​the laminate and affecting the light-gathering of the photovoltaic module.

[0006] In one aspect, the present invention provides a frame for a photovoltaic module, comprising a top plate, a first side plate, a second side plate, a third side plate, a support plate, a bottom plate, and a pressing block;

[0007] The second side plate and the third side plate are located between the support plate and the bottom plate, with the second side plate and the third side plate facing each other, and the support plate and the bottom plate facing each other, forming a frame cavity;

[0008] The top plate and the supporting plate are respectively connected to the two ends of the first side plate and are located on the same side of the first side plate; the top plate, the first side plate and the supporting plate form a laminate mounting part, and the top plate satisfies the following condition: when the laminate is installed in the laminate mounting part, the orthographic projection of the top plate on the supporting plate does not overlap with the orthographic projection of the laminate on the supporting plate;

[0009] The second side plate includes a transition portion and a first side portion. A first end and a second end of the transition portion are respectively connected to the first side plate and the first side portion. The second end of the transition portion is closer to the third side plate than the first end of the transition portion. The pressing block is located on the first side portion away from the third side plate.

[0010] Describe one end of the transition section;

[0011] The end of the pressing block pressing part away from the frame cavity is provided with a pressing protrusion protruding towards the support plate; the first side, the pressing block pressing part and the pressing protrusion form a pressing block mounting groove.

[0012] Optionally, the transition portion includes a transition section that is not parallel to the first side plate and is inclined relative to the first side portion, wherein the angle between the transition section and the first side portion is 120 degrees to 150 degrees.

[0013] Optionally, the transition portion includes a transition section;

[0014] The cross-sectional shape of the transition section is an arc shape that bulges away from the third side plate;

[0015] Alternatively, the transition segment may include a first arc-shaped sub-segment and a second arc-shaped sub-segment, wherein the arc-shaped protrusions of the first arc-shaped sub-segment and the second arc-shaped sub-segment face opposite directions.

[0016] Optionally, starting from the junction of the second side plate and the support plate, the frame includes the transition portion and the first side portion connected in sequence, and one end of the pressing block portion is connected to the junction of the bottom plate and the first side portion.

[0017] Optionally, starting from the junction of the second side plate and the support plate, the frame includes the transition portion, the first side portion, the pressing block portion, the pressing protrusion, and the second side portion connected in sequence; the pressing block portion is spaced apart from the bottom plate, and the second side portion is connected to the bottom plate.

[0018] Optionally, along the height direction of the frame, the ratio of the height of the first side portion to the height of the transition portion is 0.25-4.

[0019] Optionally, the pressing block has a pressing surface close to the support plate, and along the height direction of the frame, the ratio of the distance between the support plate and the pressing surface to the distance between the pressing surface and the bottom plate is 2-4, and the ratio of the height of the transition portion to the height of the first side portion is 0.2-2.

[0020] Optionally, along the width direction of the frame, the distance between the surface of the pressing protrusion away from the first side and the surface of the first side away from the third side plate is taken as the first distance, and the distance between the surface of the first side away from the third side plate and the surface of the third side plate away from the second side plate is taken as the second distance, and the ratio of the first distance to the second distance is 0.4-0.8.

[0021] Optionally, the frame also has a side opening located between the transition portion and the pressing protrusion, and the side opening is connected to the pressing block mounting groove;

[0022] Along the height direction of the frame, the ratio of the height of the side opening to the height of the frame is 25%-65%.

[0023] Optionally, along the height direction of the frame, the ratio of the height of the side opening to the height of the frame is 45%-55%.

[0024] Optionally, the first side plate further includes a first protrusion structure protruding toward the laminate mounting portion; the first protrusion structure protrudes obliquely toward the support plate, or protrudes parallel to the support plate, or protrudes obliquely toward the top plate.

[0025] Optionally, the bearing plate has an upwardly protruding second protrusion structure at the end away from the first side plate, and the second protrusion structure, the bearing plate, and the first side plate form a glue-receiving groove; and / or, the surface of the pressing protrusion near the first side is an inclined surface, and the angle between the inclined surface and the plane where the pressing surface of the pressing block pressing part is located is 45 degrees to 90 degrees.

[0026] Secondly, this utility model provides a photovoltaic module, including a laminate and at least one frame of the photovoltaic module as described above, wherein the laminate is bonded to the laminate mounting portion of the frame by an encapsulating adhesive.

[0027] Thirdly, this utility model provides a photovoltaic system, including a pressing block and a photovoltaic module as described above, wherein the pressing block includes a pressing end, and the pressing end is pressed onto the pressing part of the pressing block in the photovoltaic module.

[0028] Optionally, the pressure block further includes a support portion for abutting against a purlin or bracket.

[0029] In this invention, the frame of the photovoltaic module includes a pressing block portion, which is connected to the first side plate through a first side portion and a transition portion. When the pressing block is installed, it presses against the pressing block portion, and the pressing block does not block the light-facing surface of the laminate. Furthermore, when the laminate is installed in the laminate mounting portion, the orthographic projection of the top plate on the support plate and the orthographic projection of the laminate on the support plate do not overlap, that is, the top plate does not cover the light-facing surface of the laminate. Therefore, the light-facing surface of the laminate is not blocked by the frame, thus increasing the light-facing area of ​​the laminate and thereby increasing the power generation of the photovoltaic module.

[0030] In addition, when the laminate is installed in the laminate mounting section, the orthographic projection of the top plate on the support plate does not overlap with the orthographic projection of the laminate on the support plate, which also makes the frame have the effect of preventing dust accumulation.

[0031] Furthermore, by setting the transition section, the surface area of ​​the second side plate in the frame can be increased to provide support when the corner code rivets are made, and the rigidity of the frame can be improved.

[0032] In addition, the setting of pressing protrusions and pressing block mounting grooves facilitates the installation of pressing blocks and provides a certain limiting effect on the frame of photovoltaic modules, which can prevent the frame from separating from the pressing blocks.

[0033] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are specific embodiments of this utility model. Attached Figure Description

[0034] Figure 1 A schematic diagram of the frame of a photovoltaic module provided in Embodiment 1 of this utility model;

[0035] Figure 2 An enlarged schematic diagram of the mounting groove for the pressure block in the frame of the photovoltaic module provided in Embodiment 1 of this utility model;

[0036] Figure 3 This is an enlarged schematic diagram of the top plate and the first protrusion structure in the frame of the photovoltaic module provided in Embodiment 1 of this utility model;

[0037] Figure 4 A schematic diagram of the structure of the frame, laminate, pressing block, and purlin of the photovoltaic module provided in Embodiment 1 of this utility model. Figure 1 ;

[0038] Figure 5 A schematic diagram of the structure of the frame, laminate, pressing block, and purlin of the photovoltaic module provided in Embodiment 1 of this utility model. Figure 2 ;

[0039] Figure 6 A schematic diagram of the structure of the frame, laminate, pressing block, and purlin of the photovoltaic module provided in Embodiment 1 of this utility model. Figure 3 ;

[0040] Figure 7 Schematic diagram of the structure of the pressure block provided in the embodiment of this utility model Figure 1 ;

[0041] Figure 8 This is a schematic diagram of the frame structure of the photovoltaic module provided in Embodiment 2 of this utility model;

[0042] Figure 9 This is a schematic diagram of the frame, laminate, pressing block, and purlin of the photovoltaic module provided in Embodiment 2 of this utility model;

[0043] Figure 10 Schematic diagram of the structure of the pressure block provided in the embodiment of this utility model Figure 2 ;

[0044] Figure 11 This is a schematic diagram of the frame structure of the photovoltaic module provided in Embodiment 3 of this utility model;

[0045] Figure 12 This is a schematic diagram of the frame structure of the photovoltaic module provided in Embodiment 4 of this utility model;

[0046] Figure 13 A schematic diagram of the frame of the photovoltaic module provided in Embodiment 5 of this utility model;

[0047] Figure 14 This is an enlarged schematic diagram of the top plate and the first protrusion structure in the frame of the photovoltaic module provided in Embodiment 5 of this utility model;

[0048] Figure 15 This is a schematic diagram of the frame structure of the photovoltaic module provided in Embodiment Six of this utility model;

[0049] Figure 16 A schematic diagram of the frame of the photovoltaic module provided in Embodiment 7 of this utility model;

[0050] Figure 17 A schematic diagram of the frame of the photovoltaic module provided in Embodiment 8 of this utility model;

[0051] Figure 18 This is a schematic diagram of the frame structure of the photovoltaic module provided in Embodiment 9 of this utility model.

[0052] Figure label:

[0053] 1-Frame, 10-First side plate, 101-First protruding structure, 11-Second side plate, 111-Transition section, 1111-Straight wall section, 1112-Transition section, 11121-First arc-shaped sub-segment, 11122-Second arc-shaped sub-segment, 112-First side, 113-Second side, 12-Third side plate, 13-Top plate, 131-Inner surface, 14-Bearing plate, 15-Bottom plate, 151-Grounding connection, 16-Pressure block pressing part, 17-Pressure pressing protrusion, 18-Side opening, 19-Second protruding structure, 2-Laminated component, 3-Pressure block, 31-Main body, 32-Pressure pressing end, 33-Supporting part, 4-Purlin, 5-Fasting assembly, 51-First bolt, 52-Nut, 53-Second bolt, 54-Card. Detailed Implementation

[0054] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0055] In one aspect, some embodiments of this utility model disclose a frame 1.

[0056] Example 1

[0057] Reference Figures 1 to 6 The frame 1 of the photovoltaic module includes a top plate 13, a first side plate 10, a second side plate 11, a third side plate 12, a support plate 14, a bottom plate 15, and a pressing block 16. The second side plate 11 and the third side plate 12 are located between the support plate 14 and the bottom plate 15, with the second side plate 11 and the third side plate 12 facing each other, and the support plate 14 and the bottom plate 15 facing each other, forming a frame cavity. The top plate and the support plate are respectively connected to the two ends of the first side plate and are located on the same side of the first side plate. The top plate 13, the first side plate 10, and the support plate 14 form a laminate mounting part, and the top plate 13 satisfies the following condition: when the laminate 2 is installed in the laminate mounting part, the top plate 13, in the bearing... The orthographic projection on the carrier plate 14 does not overlap with the orthographic projection of the laminate 2 on the carrier plate 14; the second side plate 11 includes a transition portion 111 and a first side portion 112, the first end and the second end of the transition portion 111 are respectively connected to the first side plate 10 and the first side portion 112, and the second end of the transition portion 111 is closer to the third side plate 12 than the first end of the transition portion 111; the pressing block portion 16 is disposed at the end of the first side portion 112 away from the transition portion 111; the end of the pressing block portion 16 away from the frame cavity is connected to a pressing protrusion 17 protruding toward the carrier plate 14; the first side portion 112, the pressing block portion 16 and the pressing protrusion 17 form a pressing block mounting groove.

[0058] The top plate 13 is located above the support plate 14. The pressing part 16 is used for pressing the pressing block 3. The frame cavity is formed by the second side plate 11, the support plate 14, the third side plate 12, and the bottom plate 15, and the frame cavity specifically extends through the frame 1 along its length. The frame cavity is specifically an irregularly shaped cavity. Along the width direction of the frame 1, the frame 1 has a first side and a second side, and the top plate 13, the first side plate 10, the second side plate 11, and the pressing part 16 are all located on the first side of the frame 1. The width direction of the frame 1 can be referred to... Figure 1 The direction indicated by arrow A in the middle.

[0059] The second end of the transition portion 111 is closer to the third side plate 12 than the first end of the transition portion 111. That is, along the width direction of the photovoltaic module frame 1, the distance between the second end of the transition portion 111 and the third side plate 12 is smaller than the distance between the first end of the transition portion 111 and the third side plate 12.

[0060] The frame 1 also has a side opening 18, which is located between the transition portion 111 and the pressing protrusion 17, and is connected to the pressing block mounting groove. In this embodiment, the transition portion 111 includes a straight wall section 1111 and a transition section 1112, and the side opening 18 is specifically located between the end of the straight wall section 1111 near the transition section 1112 and the pressing protrusion 17. The side opening 18 facilitates the insertion of the pressing block 3.

[0061] The frame 1 includes a pressing block 16, which is connected to the first side plate 10 through the first side portion 112 and the transition portion 111. When the pressing block 3 is installed, the pressing block 3 is pressed onto the pressing block 16. The pressing block 3 will not block the light-facing surface of the laminate 2. Furthermore, when the laminate 2 is installed in the laminate mounting portion, the orthographic projection of the top plate 13 on the support plate 14 does not overlap with the orthographic projection of the laminate 2 on the support plate 14. That is, the top plate 13 will not cover the light-facing surface of the laminate 2. Therefore, the light-facing surface of the laminate 2 will not be blocked by the frame 1. Thus, the light-facing area of ​​the laminate 2 can be increased, thereby increasing the power generation of the photovoltaic module.

[0062] Furthermore, when the laminate 2 is installed in the laminate mounting section, the orthographic projection of the top plate 13 on the support plate 14 does not overlap with the orthographic projection of the laminate 2 on the support plate 14, which also gives the frame 1 a dust-proof effect, facilitating the later maintenance of the photovoltaic module. In addition, the pressing part 16 is located on the outside of the frame cavity, so the pressing block 3 can be installed without opening a through hole in the second side plate 11 itself, which facilitates the installation of the pressing block 3.

[0063] In some embodiments, the frame 1 is applied to a photovoltaic module, which includes the frame 1 and a laminate 2. The laminate 2 may include a transparent cover plate, an upper encapsulating film, a solar cell, a lower encapsulating film, and a backsheet or back glass, arranged sequentially. The side of the laminate 2 that receives light is the light-facing side, and the side of the laminate 2 opposite to the light-facing side is the bottom side. The frame 1 may be made of aluminum alloy or steel, etc., and is used to protect the laminate 2. The frame 1 may be a long frame provided on the edge of the long side of the laminate 2, or a short frame provided on the edge of the short side of the laminate 2.

[0064] In some embodiments, the laminate mounting portion includes a groove formed by a top plate 13, a first side plate 10, and a support plate 14. The support plate 14 is used to bond to the bottom surface of the laminate 2, and the top plate 13 and the first side plate 10 are used to bond to the sidewalls of the laminate 2. The support plate 14 can be bonded to the bottom surface of the laminate 2 using encapsulating adhesive, and the top plate 13 and the first side plate 10 can be bonded to the sidewalls of the laminate 2 using encapsulating adhesive. The encapsulating adhesive can be silicone, a one-component structural adhesive, a two-component structural adhesive, or other adhesives.

[0065] In some embodiments, the photovoltaic module further includes corner brackets, which connect two frame pieces 1 at one corner of the photovoltaic module. A frame cavity is used to accommodate the corner brackets. The corner brackets can be riveted to the frame pieces 1. The transition portion 111 may include a transition section 1112, which may be inclined and have an arc-shaped cross-section. The transition portion 111 increases the surface area of ​​the second side plate 11 in the frame piece 1, providing support during corner bracket riveting and improving the rigidity of the frame piece 1.

[0066] In some embodiments, when the support plate 14 is bonded to the bottom surface of the laminate 2, the surface of the top plate 13 facing away from the support plate 14 is preferably lower than or flush with the light-facing surface of the laminate 2. When the surface of the top plate 13 facing away from the support plate 14 is lower than or flush with the light-facing surface of the laminate 2, rainwater can flow directly down from the top plate 13, thereby achieving dust removal. That is, the rainwater is not blocked by the frame 1 during the dust washing process, which improves the dust removal effect of the frame 1.

[0067] In some embodiments, a pressure block mounting groove is used for the pressure block 3 to extend into, and the shape of the pressure block mounting groove can be rectangular, trapezoidal, irregular polygonal, etc. The pressure block pressing part 16 has a pressing surface close to the bearing plate 14, and the surface of the pressing protrusion 17 near the first side 112 can be an inclined surface, and the angle β between the inclined surface and the plane where the pressing surface is located can be 45 degrees to 90 degrees. For example, the angle β between the inclined surface and the horizontal plane can be 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, 90 degrees, etc.

[0068] In some embodiments, the pressing block 3 includes a main body 31, a pressing end 32, and a support 33. The pressing end 32 is connected to the end of the main body 31 along its width direction, and the support 33 is connected to the main body 31. Specifically, the pressing end 32 of the pressing block 3 is pressed onto the pressing block pressing part 16. The main body 31 may have mounting holes. There may be two pressing ends 32, each connected to one end of the main body 31 along its width direction. There may also be two support parts 33, each located near one of the two pressing ends 32. When the pressing end 32 is pressed onto the pressing block pressing part 16, it may contact the pressing protrusion 17 and the first side portion 112. The pressing protrusion 17 and the pressing block mounting groove facilitate the installation of the pressing block 3 and provide a certain limiting effect on the frame 1, preventing the frame 1 from separating from the pressing block 3.

[0069] In some embodiments, the ratio of the height of the side opening 18 to the height of the frame 1 along the height direction of the frame 1 is 25%-65%. The height of the side opening 18 is the distance between the end of the transition portion 111 away from the first side portion 112 and the end of the pressing protrusion 17 near the transition portion 111 along the height direction of the frame 1. The height of the side opening 18 can be referenced... Figure 1 The height h shown is the height of the frame 1, which is the distance between the upper surface of the top plate 13 away from the upper surface of the support plate 14 and the lower surface of the bottom plate 15 away from the support plate 14 along the height direction of the frame 1. The height of the frame 1 can be referenced. Figure 1 H is shown in the figure.

[0070] The ratio of the height h of the side opening 18 to the height H of the frame 1 is 25%-65%, for example, it can be 25%, 30%, 40%, 45%, 50%, 55%, 60%, 64%, etc. When the ratio of the height h of the side opening 18 to the height H of the frame 1 is within the above range, it is convenient to insert the pressure block 3, while ensuring the strength of the frame 1 and avoiding the impact on the strength of the frame 1 due to the excessive height of the side opening 18.

[0071] When the height H of the frame 1 is 35mm, the ratio of the height h of the side opening 18 to the height H of the frame 1 is preferably 45%-65%. When the height H of the frame 1 is 30mm, the ratio of the height h of the side opening 18 to the height H of the frame 1 is preferably 30%-55%.

[0072] In some embodiments, the transition portion 111 includes a transition section 1112, which is not parallel to the first side plate 10 and is inclined relative to the first side portion 112. The angle between the transition section 1112 and the first side portion 112 is 120 degrees to 150 degrees.

[0073] The transition portion 111 further includes a straight wall section 1111 connected to the end of the transition segment 1112 away from the first side portion 112. The height direction of the frame 1 can be referenced... Figure 1 The direction indicated by arrow B. The angle α between the transition segment 1112 and the first side portion 112 is 120 degrees to 150 degrees, for example, it can be...

[0074] The angles are 120 degrees, 125 degrees, 130 degrees, 135 degrees, 140 degrees, 145 degrees, 150 degrees, etc. When the angle between the transition section 1112 and the first side portion 112 is small, it is beneficial for stamping the corner bracket rivets, but the deformation of the frame 1 under frontal load will be greater. When the angle between the transition section 1112 and the first side portion 112 is large, the area of ​​the sidewall on the first side of the frame 1 is small, which is not conducive to stamping the corner bracket rivets. When the angle between the transition section 1112 and the first side portion 112 is within the above range, the area of ​​the sidewall on the first side of the frame 1 can be maximized to provide support during corner bracket riveting, while also giving the frame 1 better rigidity.

[0075] In some embodiments, starting from the junction of the second side plate 11 and the support plate 14, the frame 1 includes a transition portion 111 and a first side portion 112 connected in sequence, and one end of the pressing block portion 16 is connected to the junction of the bottom plate 15 and the first side portion 112. The second side plate 11 only includes the transition portion 111 and the first side portion 112, and the structure of the second side plate 11 and the frame cavity is simple.

[0076] In some implementations, reference is made to Figure 3 The first side plate 10 also includes a first protrusion structure 101 protruding toward the laminate mounting portion. The first protrusion structure 101 protrudes obliquely toward the support plate 14, or parallel to the support plate 14, or obliquely toward the top plate 13. That is, with the direction from the second side plate 11 to the third side plate 12 as the first direction, the first protrusion structure 101 may be inclined downwards along the first direction, or horizontally arranged along the first direction, or inclined upwards along the first direction. The first direction can be referred to... Figure 3 The direction indicated by the arrow C. The top plate 13 has an inner surface 131 that slopes upward along a first direction.

[0077] In some embodiments, a second protruding structure 19 is provided at the end of the support plate 14 away from the first side plate 10. The second protruding structure 19 protrudes upward, and the second protruding structure 19, the support plate 14, and the first side plate 10 form an adhesive receiving groove, which serves to receive silicone, and the second protruding structure 19 serves to prevent adhesive spillage. A plurality of third protruding structures are also provided on the upper surface of the support plate 14 near the top plate 13. The plurality of third protruding structures are spaced apart, and the third protruding structures are preferably lower than the second protruding structure 19.

[0078] In some embodiments, the surface of the pressing block 16 facing away from the support plate 14 is flush with the surface of the base plate 15 facing away from the support plate 14. The base plate 15 may have bolt mounting holes, which are used to connect to the purlin 4 via bolts. Alternatively, the base plate 15 may not have bolt mounting holes; in this case, the frame 1 is connected to the purlin 4 only through the pressing block 3 and the fastening assembly 5. The lower position of the pressing block 16 allows the center of gravity of the pressing block 3 to shift downwards, improving the installation reliability of the photovoltaic module. Furthermore, the bolts connecting to the base plate 15 can be eliminated.

[0079] In some embodiments, the ratio of the height of the first side portion 112 to the height of the transition portion 111 along the height direction of the frame 1 is 0.25-4.

[0080] The height of the first side portion 112 can be referenced. Figure 1 The height of the transition section 111 shown in the figure (H2) can be referenced. Figure 1 H1 is shown in the figure. The ratio of the height H2 of the first side portion 112 to the height H1 of the transition portion 111 is 0.25-4, for example, it can be 0.25, 0.5, 1, 2, 3, 4, etc. When the ratio of the height of the first side portion 112 to the height of the transition portion 111 is within the above range, the frame 1 can have good rigidity.

[0081] The height H1 of the transition section 111 is the sum of the height H3 of the straight wall section 1111 and the height H4 of the transition section 1112. The ratio of the height H3 of the straight wall section 1111 to the height H4 of the transition section 1112 can be 0.2-2. Specifically, the ratio of the height H3 of the straight wall section 1111 to the height H4 of the transition section 1112 can be 0.2, 0.3, 0.5, 0.8, 1, 1.5, 2, etc. The ratio of the height H3 of the straight wall section 1111, the height H4 of the transition section 1112, and the height H2 of the first side section 112 can be 1:1:2, 1:5:10, 2:1:7, etc.

[0082] In some embodiments, along the width direction of the frame 1, the first distance is the distance between the surface of the pressing protrusion 17 away from the first side portion 112 and the surface of the first side portion 112 away from the third side plate 12, and the second distance is the distance between the surface of the first side portion 112 away from the third side plate 12 and the surface of the third side plate 12 away from the second side plate 11. The first distance is less than the second distance, and the ratio of the first distance to the second distance is 0.4-0.8. The first distance can be referenced... Figure 1 The second distance, W1, shown in the figure, can be referenced. Figure 1The ratio of the first distance W1 to the second distance W2 shown is 0.4-0.8, for example, it can be 0.4, 0.5, 0.6, 0.7, 0.8, etc. In this embodiment, when the ratio of the first distance to the second distance is within the above range, it can ensure that the pressing block 3 has a certain pressing distance along the width direction of the frame 1, while avoiding the increase in cost caused by excessive size.

[0083] In some embodiments, the position of the pressing protrusion 17 corresponds to the position of the first side plate 10 along the width direction of the frame 1. Preferably, the distance between the surface of the pressing protrusion 17 away from the first side portion 112 and the surface of the first side plate 10 away from the third side plate 12 along the width direction of the frame 1 is 0.

[0084] Along the width direction of the frame 1, the surface of the pressing protrusion 17 away from the first side 112 can be located on the side of the first side plate 10 away from the third side plate 12. In this case, along the width direction of the frame 1, the distance between the surface of the pressing protrusion 17 away from the first side 112 and the surface of the first side plate 10 away from the third side plate 12 is less than or equal to W1. Alternatively, along the width direction of the frame 1, the surface of the pressing protrusion 17 away from the first side 112 can also be located on the side of the first side plate 10 closer to the third side plate 12. In this case, along the width direction of the frame 1, the distance between the surface of the pressing protrusion 17 away from the first side 112 and the surface of the first side plate 10 away from the third side plate 12 is less than or equal to 0.5 times W1.

[0085] Example 2

[0086] Reference Figure 8 and Figure 9 Starting from the junction of the second side plate 11 and the support plate 14, the frame 1 includes a transition portion 111, a first side portion 112, a pressing block portion 16, a pressing protrusion 17, and a second side portion 113 connected in sequence.

[0087] The second side portion 113 is connected to the base plate 15; the pressing block portion 16 is spaced apart from the base plate 15. Along the height direction of the frame 1, the distance between the pressing block portion 16 and the base plate 15 is greater than zero. The distance between the pressing block portion 16 and the base plate 15 is less than the distance between the pressing block portion 16 and the bearing plate 14, which makes the position of the pressing block portion 16 lower, thereby allowing the center of gravity of the pressing block 3 to be lowered, which can improve the installation reliability of the photovoltaic module; in addition, the bolts connected to the base plate 15 can be eliminated.

[0088] In some embodiments, the pressing block 16 has a pressing surface close to the support plate 14, and the ratio of the distance between the support plate 14 and the pressing surface to the distance between the pressing surface and the bottom plate 15 along the height direction of the frame 1 is 2-4, and the ratio of the height of the transition portion 111 to the height of the first side portion 112 is 0.2-2.

[0089] In some embodiments, the distance between the bearing plate 14 and the pressing surface can be referenced. Figure 8 The distance between the H5 shown in the figure and the base plate 15 can be referenced. Figure 8 H6 is shown in the figure. The ratio of the distance H5 between the bearing plate 14 and the pressing surface to the distance H6 between the pressing surface and the base plate 15 is 2-4, for example, it can be 2, 2.5, 3, 3.5, 4, etc.

[0090] In some embodiments, the transition section 111 may consist only of the transition segment 1112, or it may include both the transition segment 1112 and the straight-wall segment 1111. The height of the transition section 111 can be referenced. Figure 8 The height of the first side portion 112 shown in the figure can be referenced. Figure 8 H8 is shown in the diagram. The distance H5 between the bearing plate 14 and the pressing surface is the sum of the height H7 of the transition portion 111 and the height H8 of the first side portion 112. The ratio of the height H7 of the transition portion 111 to the height H8 of the first side portion 112 can be 0.2-2. The ratio of the height H7 of the transition portion 111 to the height H8 of the first side portion 112 can be 0.2-2, for example, 0.2, 0.5, 0.6, 1, 1.5, 2, etc. The ratio of the height H7 of the transition portion 111, the height H8 of the first side portion 112, and the distance H6 between the pressing surface and the base plate 15 can be 3:5:2, 2:3:2, etc.

[0091] Example 3

[0092] Reference Figure 11 The base plate 15 also includes a grounding connection part 151. The frame 1 can be grounded through the grounding connection part 151.

[0093] In some implementations, optionally, the frame 1 provided in Embodiment 3 is used as the short frame of the photovoltaic module. For distributed scenarios, grounding the short frame is more convenient than grounding the long frame.

[0094] Example 4

[0095] Reference Figure 12 The transition section 111 includes only the transition segment 1112, which has an arc-shaped cross-section. The arc of the transition segment 1112 protrudes away from the third side plate 12. When the cross-sectional shape of the transition segment 1112 is arc-shaped, the overall frame 1 is smoother and more aesthetically pleasing. The radius R1 of the arc of the transition segment 1112 can be set according to actual needs, for example, it can be set to 8mm-16mm.

[0096] Example 5

[0097] Reference Figure 13 and Figure 14The transition portion 111 includes a transition section 1112, which includes a first arc-shaped sub-segment 11121 and a second arc-shaped sub-segment 11122. The arc-shaped protrusions of the first and second arc-shaped sub-segments 11121 and 11122 face opposite directions. The arc of the first arc-shaped sub-segment 11121 protrudes away from the third side plate 12, while the arc of the second arc-shaped sub-segment 11122 protrudes towards the third side plate 12. The transition portion 111 may include a straight wall section 1111. The first arc-shaped sub-segment 11121 can be directly connected to the first side plate 10, or it can be connected to the first side plate 10 through the straight wall section 1111. The second arc-shaped sub-segment 11122 is connected to the first side portion 112. The radius R2 of the arc of the first arc-shaped sub-segment 11121 can be set according to actual needs, for example, it can be set to 4mm-10mm. The radius R3 of the arc of the second arc segment 11122 can be set according to actual needs, for example, it can be set to 4mm-10mm.

[0098] The inner surface 131 of the top plate 13 is inclined downward in the first direction. When the inner surface 131 of the top plate 13 is inclined downward in the first direction, the frame 1 has good anti-overflow adhesive performance.

[0099] Example 6

[0100] Reference Figure 15 The first side plate 10 does not include the first protrusion structure 101. In Embodiment Six, the first protrusion structure 101 is removed, resulting in a larger space between the support plate 14, the first side plate 10, and the top plate 13 to accommodate excess adhesive.

[0101] Example 7

[0102] Reference Figure 16 The transition section 111 includes only the transition segment 1112, which has an arc-shaped cross-section and protrudes away from the third side plate 12. The radius R4 of the arc of the transition section 111 can be set according to actual needs, for example, it can be set to 3mm-6mm.

[0103] Example 8

[0104] Reference Figure 17 The second side plate 11 does not include the transition part 111. The second side plate 11 is not directly connected to the first side plate 10. The second side plate 11 is connected to the lower side of the bearing plate 14 away from the top plate 13.

[0105] Example 9

[0106] Reference Figure 18 The second side plate 11 does not include the transition part 111. The second side plate 11 is not directly connected to the first side plate 10. The second side plate 11 is connected to the lower side of the bearing plate 14 away from the top plate 13.

[0107] Secondly, this utility model also discloses a photovoltaic module, including a laminate 2 and a frame 1 provided in the first aspect. The laminate 2 is bonded to the laminate mounting portion of the frame 1 by an encapsulating adhesive. The photovoltaic module includes at least one frame 1. For example, the photovoltaic module can have two frames 1 arranged opposite to each other, or it can have four frames 1 located at the four periphery of the laminate 2. Since the photovoltaic module includes the aforementioned frame 1, it also possesses the beneficial effects of the aforementioned frame 1, which will not be elaborated further here.

[0108] Thirdly, referring to Figures 4 to 7 , Figure 9 and Figure 10 This utility model also discloses a photovoltaic system, including a pressing block 3 and a photovoltaic module provided by a second aspect. The pressing block 3 includes a pressing end 32, which is pressed onto the pressing part 16 in the photovoltaic module. This photovoltaic system can be applied to ground-mounted centralized photovoltaic scenarios or distributed photovoltaic scenarios on building rooftops or facades.

[0109] The pressing block 3 includes a main body 31 and a pressing end 32. The pressing end 32 is connected to the end of the main body 31 along its width direction, specifically, the pressing end 32 of the pressing block 3 is pressed onto the pressing part 16 of the pressing block. The main body 31 may have mounting holes. There may be two pressing ends 32, each connected to one end of the main body 31 along its width direction. The pressing end 32 is angled to the main body 31, or the cross-sectional shape of the pressing end 32 is arc-shaped. The thickness of the pressing end 32 may be equal to or less than the thickness of the main body 31. The thickness of the pressing end 32 may be uniform or gradually varying. This pressing block 3 is a universal pressing block, which can be used as a center pressing block or an edge pressing block.

[0110] In some embodiments, the pressure block 3 further includes a support 33 for abutting against the purlin 4 or the bracket.

[0111] The photovoltaic system also includes purlins 4, with clamping blocks 3 connected to them, and support parts 33 abutting against the purlins 4. The clamping blocks 3 are specifically connected to the purlins 4 via fastening components 5. Fastening components 5 may include a first bolt 51 and a nut 52; the first bolt 51 can be an external hexagonal bolt. Fastening components 5 may also include a second bolt 53 and a clip 54; the second bolt 53 can be an internal hexagonal bolt, and the clip 54 has a threaded hole. The cross-sectional shape of the purlins 4 can be C-shaped, U-shaped, etc.

[0112] Support portion 33 is connected to main body portion 31. There are two support portions 33, each located near one of the two crimping ends 32. A certain distance exists between the support portion 33 and the crimping end 32, and a crimping protrusion 17 is located between the crimping end 32 and the support portion 33. The cross-sectional shape of the support portion 33 can be rectangular, trapezoidal, L-shaped, irregular polygonal, etc. In addition to the crimping end 32 of the pressure block 3 being crimped onto the pressure block crimping portion 16, the support portion 33 also abuts against the purlin 4, increasing the contact area of ​​the pressure block 3 and dispersing stress.

[0113] It should be noted that in some embodiments, the photovoltaic system includes a support frame, the pressure block 3 is connected to the support frame, and the support part 33 abuts against the support frame.

[0114] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0115] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A frame for a photovoltaic module, characterized in that, It includes a top plate, a first side plate, a second side plate, a third side plate, a bearing plate, a bottom plate, and a pressing block joint; The second side plate and the third side plate are located between the support plate and the bottom plate, with the second side plate and the third side plate facing each other, and the support plate and the bottom plate facing each other, forming a frame cavity; The top plate and the supporting plate are respectively connected to the two ends of the first side plate and are located on the same side of the first side plate; the top plate, the first side plate and the supporting plate form a laminate mounting part, and the top plate satisfies the following condition: when the laminate is installed in the laminate mounting part, the orthographic projection of the top plate on the supporting plate does not overlap with the orthographic projection of the laminate on the supporting plate; The second side plate includes a transition portion and a first side portion. The first end and the second end of the transition portion are respectively connected to the first side plate and the first side portion. The second end of the transition portion is closer to the third side plate than the first end of the transition portion. The pressing block portion is disposed at the end of the first side portion away from the transition portion. The end of the pressing block pressing part away from the frame cavity is provided with a pressing protrusion protruding towards the support plate; the first side, the pressing block pressing part and the pressing protrusion form a pressing block mounting groove.

2. The frame of the photovoltaic module according to claim 1, characterized in that, The transition portion includes a transition section, which is not parallel to the first side plate and is inclined relative to the first side. The angle between the transition section and the first side is 120 degrees to 150 degrees.

3. The frame of the photovoltaic module according to claim 1, characterized in that, The transition section includes a transition segment; The cross-sectional shape of the transition section is an arc shape that bulges away from the third side plate; Alternatively, the transition segment may include a first arc-shaped sub-segment and a second arc-shaped sub-segment, wherein the arc-shaped protrusions of the first arc-shaped sub-segment and the second arc-shaped sub-segment face opposite directions.

4. The frame of the photovoltaic module according to any one of claims 1-3, characterized in that, Starting from the junction of the second side plate and the bearing plate, the frame includes the transition portion and the first side portion connected in sequence, and one end of the pressing block portion is connected to the junction of the bottom plate and the first side portion.

5. The frame of the photovoltaic module according to any one of claims 1-3, characterized in that, Starting from the junction of the second side plate and the supporting plate, the frame includes the transition portion, the first side portion, the pressing block portion, the pressing protrusion, and the second side portion connected in sequence; the pressing block portion is spaced apart from the bottom plate, and the second side portion is connected to the bottom plate.

6. The frame of the photovoltaic module according to claim 4, characterized in that, Along the height direction of the frame, the ratio of the height of the first side portion to the height of the transition portion is 0.25-4.

7. The frame of the photovoltaic module according to claim 5, characterized in that, The pressing block has a pressing surface close to the bearing plate. Along the height direction of the frame, the ratio of the distance between the bearing plate and the pressing surface to the distance between the pressing surface and the bottom plate is 2-4. The ratio of the height of the transition portion to the height of the first side portion is 0.2-2.

8. The frame of the photovoltaic module according to any one of claims 1-3 and 6-7, characterized in that, Along the width direction of the frame, the distance between the surface of the pressing protrusion away from the first side and the surface of the first side away from the third side plate is taken as the first distance, and the distance between the surface of the first side away from the third side plate and the surface of the third side plate away from the second side plate is taken as the second distance, and the ratio of the first distance to the second distance is 0.4-0.

8.

9. The frame of the photovoltaic module according to claim 1, characterized in that, The frame also has a side opening, which is located between the transition portion and the pressing protrusion, and the side opening is connected to the pressing block mounting groove; Along the height direction of the frame, the ratio of the height of the side opening to the height of the frame is 25%-65%.

10. The frame of the photovoltaic module according to claim 9, characterized in that, Along the height direction of the frame, the ratio of the height of the side opening to the height of the frame is 45%-55%.

11. The frame of the photovoltaic module according to claim 1, characterized in that, The first side plate further includes a first protrusion structure protruding toward the laminate mounting portion; the first protrusion structure protrudes obliquely toward the support plate, or protrudes parallel to the support plate, or protrudes obliquely toward the top plate.

12. The frame of the photovoltaic module according to any one of claims 1-3, 6-7, and 9-11, characterized in that, The bearing plate has an upwardly protruding second protrusion structure at the end away from the first side plate, and the second protrusion structure, the bearing plate and the first side plate form a glue-receiving groove; and / or, the surface of the pressing protrusion near the first side is an inclined surface, and the angle between the inclined surface and the plane where the pressing surface of the pressing block pressing part is located is 45 degrees to 90 degrees.

13. A photovoltaic module, characterized in that, The device includes a laminate and at least one frame of a photovoltaic module as described in any one of claims 1 to 12, wherein the laminate is bonded to the laminate mounting portion of the frame by an encapsulating adhesive.

14. A photovoltaic system, characterized in that, The photovoltaic module includes a pressure block and a photovoltaic module as described in claim 13, wherein the pressure block includes a pressing end that is pressed against a pressure block pressing portion in the photovoltaic module.

15. The photovoltaic system according to claim 14, characterized in that, The pressure block also includes a support portion for abutting against a purlin or bracket.

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