Photovoltaic frame clamp, photovoltaic module

Abstract

The application provides a photovoltaic frame clamp and a photovoltaic module, the clamp is suitable for clamping an A-face-free frame in a photovoltaic panel and a laminated piece laid on the A-face-free frame, and the clamp comprises a clamping part, a bottom plate and two side plates, the bottom plate and the two side plates enclose a clamping groove, the two side plates gradually approach each other along a second direction gradually away from the bottom plate, so that the width of the slot of the clamping groove is less than the width of the bottom of the clamping groove; an outer wing part comprises two outer wing pieces arranged on both sides of the clamping part in the width direction, one end of the outer wing piece is connected with the side plate in the second direction, the other end of the outer wing piece extends outward away from the bottom plate and has an outward extending pressing part beyond the bottom plate. The photovoltaic frame clamp can clamp the A-face-free frame and the laminated piece, and make the two be fixedly bonded to the glue solidification, so as to eliminate the problems of frame separation or laminated piece warping, and facilitate clamping operation and disassembly operation, so as to avoid affecting production efficiency due to complicated operation, and reduce damage to the surface film layer of the frame and the laminated piece.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and more specifically to a clamp suitable for photovoltaic panels and a photovoltaic module including the clamp. Background Technology

[0002] Photovoltaic panels are the core component of a solar power generation system. They consist of multiple parts, including a stacked backsheet, solar cells, a glass cover, and a surrounding frame. During assembly, after the frame is assembled, a laminate is stacked on top; the laminate is bonded to the frame with an adhesive, typically, as shown below. Figure 1 As shown, the edge of the laminate is embedded in the groove (referred to as the support groove in this article) below the A side of the frame, thus achieving compression and ensuring a smooth bond between the laminate and the frame.

[0003] With development, the industry has seen the emergence of anti-dust accumulation technology that eliminates the A-side of the short frame. This is mainly to prevent dust accumulation on the upper surface of the frame (i.e., the A-side) from obstructing the solar cells and causing a loss of power generation. However, after eliminating the A-side, there are no structures or parts on the frame to constrain the laminates. Furthermore, after assembly, the product flows through the production line. At this time, the adhesive connecting the frame and the laminates is still in the early stages of curing, and the adhesive strength is poor. Therefore, the frame and laminates are prone to detachment during the flow process, or the laminates may warp. Utility Model Content

[0004] In view of this, this application aims to provide a photovoltaic frame clamp suitable for photovoltaic panels, which can clamp the frame without side A and the laminate, so that the two are firmly bonded to the adhesive and cured to eliminate the problem of frame detachment or laminate warping. It is also convenient for clamping and disassembly operations, so as to avoid affecting production efficiency due to cumbersome operation, and can reduce damage to the surface film of the frame and the laminate.

[0005] This application mainly provides a photovoltaic frame clamp, suitable for clamping the frame without A-side of a photovoltaic panel and the laminate laid on the frame without A-side, the clamp comprising:

[0006] The clamping part includes a base plate and side plates located on both sides of the base plate in a first direction. The base plate and the two side plates enclose each other to form a clamping groove. The two side plates gradually move closer together in a second direction that is gradually away from the base plate, so that the width of the opening of the clamping groove is smaller than the width of the bottom of the groove.

[0007] The outer wing portion includes two outer wing members arranged on both sides of the clamping portion in the width direction. In the second direction, one end of the outer wing member is connected to the side plate, and the other end extends outward in a direction away from the bottom plate and has an outward pressing portion that extends beyond the bottom plate.

[0008] In one possible implementation, the outer wing is an outer wing plate and is an integral structure with the side plate.

[0009] In one possible implementation, the outer wing is an outer wing plate with a groove that is recessed relative to the outer surface of the outer wing plate facing away from the side plate, and the groove is located at least within the extended pressing portion.

[0010] In one possible implementation, the outer wing is an outer wing plate, and the outer surface of the outer wing plate facing away from the side plate has raised textures or protrusions, which are disposed within the extended pressing portion to increase pressing friction.

[0011] In one possible implementation, the outer wing is a dovetail ring, one end of which is hinged to the side plate to form the extended pressing part, and the other end of which has a dovetail structure.

[0012] In one possible implementation, in the original state, the included angle between the two side plates is M1, and 10°≤M1≤20°; and / or, in the clamped state, the included angle between the two side plates is M2, and 0°≤M2≤10°.

[0013] In one possible implementation, the outer wing is an outer wing plate, and the side plate and the outer wing plate are connected by an arc-shaped bend, so that the inner wall at the edge of the slot is an arc surface;

[0014] And / or, the sidewalls and bottomwalls of the clamping groove are connected by an arc transition;

[0015] And / or, a padding layer is laid on the side wall of the clamping groove.

[0016] In one possible implementation, the length of the extended pressing portion in the second direction is L1, and 10mm≤L1≤20mm;

[0017] And / or, the thickness of the side plate is T1, the thickness of the outer wing is T2, and 0mm < T1 ≤ 1.5mm, 0mm < T2 ≤ 1.5mm, 0mm < T1 + T2 < the stacking gap of the photovoltaic panels.

[0018] This application also provides a photovoltaic module, including a photovoltaic frame, a laminate, and a photovoltaic frame clamp as described in any of the preceding claims.

[0019] In one possible implementation, the photovoltaic frame includes two first frames and two second frames. The first frame is the frame without an A-side and includes a first support portion and a side baffle connected to and erected on the upper edge of the first support portion. The side baffle and the first support portion form a first support groove, and the upper surface of the first support portion forms a support surface for supporting the laminate. Wherein:

[0020] The width of the support surface is L2, the height of the first frame is H1, the height from the upper end of the laminate to the bottom of the first frame is H2, the width of the clamping groove is K1, and the groove depth is N; and H1 < K1 < H2, L2 ≤ N < L2 + 10 mm.

[0021] The photovoltaic frame clamp provided in this application has a U-shaped clamping part that can clamp the frame and the laminate, firmly bonding them until the adhesive cures, thus eliminating the problems of frame detachment or laminate warping. Furthermore, in this application, the clamping groove on the clamping part has an inwardly constricted opening, requiring it to be opened before clamping. Therefore, after clamping, no other fasteners are needed to clamp the frame and laminate, ensuring clamping stability. Simultaneously, the clamp is also provided with outer wings located on the outside of the clamping part. Operators can easily open the clamping part by pressing the two outer wings, conveniently clamping the clamp onto the frame and laminate. This not only facilitates operation and allows for quick assembly and disassembly of multiple clamps, resulting in high efficiency and improved production efficiency, but also ensures that the clamp will not rub against the outer surfaces of the laminate and frame, thus preventing damage to the film layers on both surfaces and reducing damage to the product. Attached Figure Description

[0022] Figure 1 The diagram shows the front side with and without the front side border.

[0023] Figure 2 The diagram shown is a schematic of the clamp in the clamping state in an embodiment of this application.

[0024] Figure 3 The diagram shown is a schematic diagram of the first angle of the clamp in some embodiments of this application.

[0025] Figure 4 The diagram shown is a second angle schematic of the fixture in some embodiments of this application.

[0026] Figure 5 The diagram shown is a schematic diagram of the first angle of the clamp in some other embodiments of this application.

[0027] Figure 6 The diagram shown is a second angle schematic of the clamp in some other embodiments of this application.

[0028] Figures 1-6 middle:

[0029] 1. No A-side frame; 11. Support part; 11a. First support part; 11b. Second support part; 12. Folded edge part; 13. Side baffle; 2. Laminated component;

[0030] 3. Fixture; 31. Base plate; 32. Side plate; 33. Outer wing; 33a. Outer wing plate; 33b. Dovetail ring; 331. Outer pressing part. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The frame of the photovoltaic panel consists of two long frames and two short frames. Figure 1 The image shows a border with side A (long or short) and a border without side A. Figure 1 As can be seen, the frame includes a support portion 11 and a folded edge portion 12 that folds inward from the upper edge of the support portion 11, with the upper end face of the folded edge portion 12 being surface A. The edge of the laminate 2 is embedded in the support groove below surface A of the frame, thus achieving a stable clamping between the laminate 2 and the frame and ensuring a smooth bond between the laminate 2 and the frame. After removing surface A, the frame only includes the support portion 11 and the side baffle 13 located at the upper edge of the support portion 11, which has no pressing relationship with the laminate 2, and is only bonded to the laminate 2 through the groove wall of the support groove. Therefore, during the transfer process of the frame and the laminate 2 to the curing room immediately after bonding and assembly, problems such as frame detachment or laminate warping may easily occur.

[0033] If clamps are used to clamp the frame and laminate 2, ordinary U-shaped clamps composed of single-layer boards are either inconvenient to clamp onto the frame and laminate 2 due to their small opening, and are prone to damage to the film layer on the outer surface of laminate 2 and frame due to pushing and friction during clamping, or require additional fasteners for tightening due to their large opening, making the operation cumbersome; disassembly and assembly are also inconvenient, and multiple clamps will be clamped on a single frame, which will affect production efficiency due to inconvenience. However, if clamps with cumbersome opening and closing structures are used, they are not only inconvenient to operate, but also costly, and occupy a lot of space after being clamped onto the frame, which is not conducive to the stacking of photovoltaic modules.

[0034] In view of this, please refer to the appendix. Figures 2-6This application provides a photovoltaic frame clamp 3 (hereinafter referred to as clamp 3), suitable for clamping a photovoltaic panel without an A-side frame 1 and a laminate 2 laid on the A-side frame 1. The clamp 3 includes a clamping part and an outer wing part. The clamping part includes a base plate 31 and side plates 32 located on both sides of the base plate 31 in a first direction. The base plate 31 and the two side plates 32 surround to form a clamping groove. Both the clamping groove and the clamping part are U-shaped or U-shaped. At the same time, the two side plates 32 gradually move closer together in a second direction that gradually moves away from the base plate 31, so that the width of the groove opening is smaller than the width of the groove bottom (in the figure, the first direction is the width direction and the second direction is the length direction); that is, the groove opening is narrowed. In this way, the clamp 3 needs to be opened before clamping, and after clamping the laminate 2 and the frame, no other fasteners are needed to ensure the clamping stability.

[0035] The outer wing portion includes two outer wing members 33 arranged on both sides of the clamping portion in the width direction. In the second direction, one end of the outer wing member 33 is connected to the side plate 32, and the other end extends outward away from the bottom plate 31 and has an extended pressing portion 331 that extends beyond the bottom plate 31. That is, the part of the outer wing member 33 that extends beyond the bottom plate 31 in the second direction is called the extended pressing portion 331. By providing the outer wing member 33 and its extended pressing portion 331, the clamp 3 has an operating part that facilitates opening the clamping portion. The operator can easily open the clamping portion by directly pressing or indirectly pressing the extended pressing portion 331 of the outer wing member 33 with a pressure roller-like component, and easily clamp the clamp 3 onto the frame and the laminate 2 without friction. When removing the clamp 3, it can also be directly opened and removed. In this way, not only is it convenient to install and remove the clamp 3, improving convenience and production efficiency, but it also avoids damage to the surface film layer of the frame and the laminate 2.

[0036] As can be seen, the photovoltaic frame clamp 3 provided in this application has a U-shaped clamping part, which can clamp the frame and the laminate 2, so that the two are firmly bonded to the adhesive and the adhesive is cured, thus eliminating the problem of frame detachment or warping of the laminate 2. Moreover, in this application, the groove of the clamping part is inwardly narrowed, and it needs to be opened before clamping. After clamping, no other fasteners are needed to clamp the frame and the laminate 2, ensuring the stability of the clamping. At the same time, the clamp 3 is also provided with an outer wing on the outside of the clamping part. The operator can press the two outer wings to open the clamping part, and easily clamp the clamp 3 onto the frame and the laminate 2, and easily remove the clamp 3 from the frame. Not only is the disassembly and assembly operation convenient, but it also facilitates the quick disassembly and assembly of multiple clamps 3, which is efficient and helps to improve production efficiency. It also ensures that the clamp 3 will not rub against the outer surface of the laminate 2 and the frame, thus preventing damage to the film layer on the surface of the two and reducing the damage of the clamp 3 to the product.

[0037] Specifically, the outer wing 33 is plate-shaped and is an integral structure with the side plate 32. That is, the outer wing 33 is the outer wing plate 33a, and the entire clamp 3 is a one-piece molded component. Therefore, the overall structural strength of the clamp 3 is stable, and the connection between the outer wing plate 33a and the side plate 32 is strong, which facilitates the operation of pressing the outer wing 33 to open the clamp 3.

[0038] In some embodiments, the outer wing 33 is plate-shaped, namely the outer wing plate 33a, and the outer wing plate 33a has a groove. The groove is recessed relative to the outer surface of the back side plate 32 of the outer wing plate 33a, and the groove is located at least within the extended pressing part 331. When the operator presses the outer wing plate 33a to activate the clamp 3, the operator can insert their fingers into the groove, which facilitates the pressing operation.

[0039] In some embodiments, such as Figure 1 As shown, the outer wing 33 is plate-shaped, namely the outer wing plate 33a, and the outer surface of the back side plate 32 of the outer wing plate 33a has raised textures or bumps. The textures or bumps are set inside the extended pressing part 331 to increase the pressing friction. Setting textures or bumps in the part where the operator presses can increase the friction and provide convenience for the pressing operation.

[0040] The outer wing plate 33a, side plate 32, and bottom plate 31 are an integral structure, which can be formed by injection molding or die casting. Preferably, the material can be polyoxymethylene (POM), which has high strength, rigidity, wear resistance, and good processing stability, enabling the clamping force of the fixture 3 to be high, durable, not easily deformed, and dimensionally stable. Moreover, the surface roughness is low, which makes the surface of the fixture 3 smooth, and when clamping the frame and the laminate 2, it is not easy to wear the surface film layer of the frame or the laminate 2.

[0041] Side plate 32 and outer flange 33a are connected by an arc-shaped bend, so that the inner wall at the edge of the slot is an arc surface. For example... Figure 3 and Figure 4 As shown, the side plate 32 and the outer wing plate 33a are an integral structure, connected by a curved surface to avoid sharp corners and damage to the surface film layer of the laminate 2 and the frame. The radius of the arc of the curved bend between the side plate 32 and the outer wing plate 33a is R1. In some embodiments, 0mm < R1 ≤ 2mm.

[0042] In some embodiments, the outer wing 33 is a dovetail ring 33b, one end of which is hinged to the side plate 32 to form the outward pressing part 331, and the other end has a dovetail structure. Figure 5 As shown. In this way, it is still convenient for the operator to perform the pressing operation and to open the clamp 3. At the same time, the dovetail ring 33b can be made of metal to enhance the structural strength of the pressing part and enhance its durability.

[0043] When the outer wing 33 is a dovetail ring 33b, the groove edge of the side plate 32 has an outward flange. The outward flange is rolled to form a bushing structure. The end of the dovetail ring 33b forms a shaft and is inserted into the bushing formed by the rolled outward flange, so that the dovetail ring 33b is hinged to the side plate 32. When the dovetail ring 33b is pressed and the side plate 32 is pulled to open the clamping groove, the pulling force on the outward flange of the side plate 32 can be distributed to avoid formation or cracking.

[0044] like Figure 4 As shown, the side plate 32 and the bottom plate 31 are also connected by an arc-shaped bend, so that the side wall and bottom wall of the clamping groove are connected by an arc surface transition, without sharp corners. The radius of the arc surface of the arc-shaped bend between the side plate 32 and the bottom plate 31 is R2. In some embodiments, 0mm < R2 ≤ 2mm.

[0045] In some embodiments, a padding layer, such as a silicone layer or a rubber layer, is provided on the sidewalls of the clamping groove. This further enhances the soft protection when the frame and laminate 2 are clamped at the angle, reducing the possibility of damage.

[0046] like Figure 4 As shown, in the original state, the included angle between the two side plates 32 is M1. Preferably, 10°≤M1≤20°. This ensures the clamping force of the clamp 3, avoiding insufficient clamping force due to an excessively small angle, and also avoiding difficulty in opening due to an excessively large angle. Figure 2 As shown, in the clamped state, the included angle between the two side plates 32 is M2, preferably 0°≤M2≤10°.

[0047] The length of the extended pressing part 331 in the second direction is L1. In some embodiments, 10mm ≤ L1 ≤ 20mm is used to avoid the extended pressing part 331 being too long and taking up space or affecting pressing. The length of the clamp in the first direction can be 50mm-200mm.

[0048] The thickness of the side plate 32 is T1, and the thickness of the outer wing 33 is T2. In some embodiments, 0mm < T1 ≤ 1.5mm, 0mm < T2 ≤ 1.5mm, and 0mm < T1 + T2 < the stacking gap of the photovoltaic panels. Figure 1 As shown, when part of the frame has side A, the stacking gap of the photovoltaic panels is the height H0 of the folded edge 12 itself (excluding the support groove).

[0049] Embodiments of this application also provide a photovoltaic module, including a photovoltaic frame, a laminate 2, and a photovoltaic frame clamp 3 as described in any of the above embodiments.

[0050] The photovoltaic frame includes two first frames and two second frames, which are vertically connected and can be long and short frames, respectively. Both the first and second frames can be without an A-side frame 1, or one can be without an A-side frame 1 and the other with an A-side frame. For example, in some embodiments, the first frame is without an A-side frame 1 and includes a first support portion 11a and a side baffle 13 connected to and erected on the upper edge of the first support portion 11a. The side baffle 13 and the first support portion 11a form a first support groove, and the upper surface of the first support portion 11a forms a support surface for the laminate 2. The width of the support surface is L2, the height of the first frame is H1, and the height from the upper surface of the laminate 2 to the bottom surface of the first frame is H2; and H1 < K1 < H2, L2 ≤ N < L2 + 10 mm.

[0051] The second frame can also be without side A border 1, or it can be like this: Figure 1 The frame with side A shown on the left includes, for example, a second support portion 11b and a folded edge portion 12 connected to the second support portion 11b. A second support groove for the laminate 2 to be embedded is formed between the folded edge portion 12 and the second support portion 11b. The upper end face of the folded edge portion 12 forms the frame side A. The height of the folded edge portion 12 is H0, which is also the stacking gap of the photovoltaic panels.

[0052] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0053] The components and devices described in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the accompanying drawings. As those skilled in the art will recognize, these components and devices can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the words “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0054] It should also be noted that in the apparatus and equipment of this application, the components can be disassembled and / or reassembled. These disassemblies and / or reassemblies should be considered as equivalent solutions of this application.

[0055] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0056] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

[0057] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A photovoltaic frame clamp, characterized in that, The clamp is suitable for clamping a photovoltaic panel without an A-side frame and a laminate laid on the A-side frame, the clamp comprising: The clamping part includes a base plate and side plates located on both sides of the base plate in a first direction. The base plate and the two side plates enclose each other to form a clamping groove. The two side plates gradually move closer together in a second direction that is gradually away from the base plate, so that the width of the opening of the clamping groove is smaller than the width of the bottom of the groove. The outer wing portion includes two outer wing members arranged on both sides of the clamping portion in the width direction. In the second direction, one end of the outer wing member is connected to the side plate, and the other end extends outward in a direction away from the bottom plate and has an outward pressing portion that extends beyond the bottom plate.

2. The photovoltaic frame clamp as described in claim 1, characterized in that, The outer wing is an outer wing plate, and it is an integral structure with the side plate.

3. The photovoltaic frame clamp as described in claim 1, characterized in that, The outer wing is an outer wing plate with a groove. The groove is recessed relative to the outer surface of the outer wing plate facing away from the side plate, and the groove is located at least within the extended pressing portion.

4. The photovoltaic frame clamp as described in claim 1, characterized in that, The outer wing is an outer wing plate, and the outer surface of the outer wing plate facing away from the side plate has raised textures or protrusions. The textures or protrusions are arranged inside the extended pressing part to increase the pressing friction.

5. The photovoltaic frame clamp as described in claim 1, characterized in that, The outer wing is a dovetail ring, one end of which is hinged to the side plate to form the other end of the extended pressing part, which has a dovetail structure.

6. The photovoltaic frame clamp as described in claim 1, characterized in that, In the original state, the included angle between the two side plates is M1, and 10°≤M1≤20°; and / or, in the clamped state, the included angle between the two side plates is M2, and 0°≤M2≤10°.

7. The photovoltaic frame clamp as described in claim 1, characterized in that, The outer wing is an outer wing plate, and the side plate and the outer wing plate are connected by an arc-shaped bend so that the inner wall at the edge of the slot is an arc surface; And / or, the sidewalls and bottomwalls of the clamping groove are connected by an arc transition; And / or, a padding layer is laid on the side wall of the clamping groove.

8. The photovoltaic frame clamp as described in claim 1, characterized in that, The length of the extended pressing part in the second direction is L1, and 10mm≤L1≤20mm; And / or, the thickness of the side plate is T1, the thickness of the outer wing is T2, and 0mm < T1 ≤ 1.5mm, 0mm < T2 ≤ 1.5mm, 0mm < T1 + T2 < the stacking gap of the photovoltaic panels.

9. A photovoltaic module, characterized in that, It includes a photovoltaic frame, a laminate, and a photovoltaic frame fixture as described in any one of claims 1-8.

10. The photovoltaic module as described in claim 9, characterized in that, The photovoltaic frame includes two first frames and two second frames. The first frame is the frame without an A-side and includes a first support portion and a side baffle connected to and erected on the upper edge of the first support portion. The side baffle and the first support portion form a first support groove, and the upper surface of the first support portion forms a support surface for supporting the laminate. Wherein: The width of the support surface is L2, the height of the first frame is H1, the height from the upper end surface of the laminate to the bottom surface of the first frame is H2, and the width of the clamping groove is K1 and the groove depth is N. And H1 < K1 < H2, L2 ≤ N < L2 + 10 mm.

Images