Photovoltaic module
By using tapes of different widths and borders and sealants at the edges and corners of the photovoltaic module laminates, the sealing problem at the edges and corners of the photovoltaic module was solved, achieving better waterproofing and connection stability.
Patent Information
- Application Number
- CN202423072879.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing photovoltaic modules are at risk of water ingress at the edges and corners, and the tape is not firmly attached, and the gaps in the frame splicing result in poor sealing.
The edges and corners of the laminate are covered with a first tape and a second tape of different widths. The first tape is wider than the second tape. Combined with the use of the frame and sealant, the sealing effect at the corners is enhanced.
It improves the sealing effect at the corners of photovoltaic modules, preventing moisture from entering and ensuring a stable connection between the frame and the laminate.
Smart Images
Figure CN223652624U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic module technology, and in particular to a photovoltaic module. Background Technology
[0002] To reduce the entry of moisture and other impurities into the photovoltaic module, after the lamination process, it is usually necessary to first use tape to seal the edges of the laminate, and then fit a frame onto the edges of the laminate, with the frame and the laminate sealed with adhesive.
[0003] However, in related technologies, the tape is not effective enough in blocking water from photovoltaic modules, and there is still a risk of water ingress at the edges of photovoltaic modules, especially at the corners. Utility Model Content
[0004] Therefore, it is necessary to improve the waterproof performance of photovoltaic modules and develop a new type of photovoltaic module.
[0005] This application provides a photovoltaic module, including:
[0006] Laminated components;
[0007] A first adhesive tape is applied to the corner of the edge of the laminate.
[0008] A second adhesive tape is provided, which covers the edge of the laminate and surrounds the laminate; wherein the width of the first adhesive tape is greater than the width of the second adhesive tape.
[0009] The technical solution will be further explained below:
[0010] In one embodiment, the laminate includes a first surface and a second surface disposed opposite to each other, and a side surface connected between the first surface and the second surface, the side surface having the corner formed thereon;
[0011] The first tape includes a first body portion that is adhered to the side, a first adhesive portion that is adhered to the first surface, and a second adhesive portion that is adhered to the second surface;
[0012] The second tape includes a second body portion that is adhered to the side, a third adhesive portion that is adhered to the first surface, and a fourth adhesive portion that is adhered to the second surface;
[0013] Wherein, the width of the first adhesive part is greater than the width of the third adhesive part, and / or the width of the second adhesive part is greater than the width of the fourth adhesive part.
[0014] In one embodiment, the photovoltaic module further includes a frame fitted around the edge of the laminate and located on the side of the second tape away from the laminate, with sealant filling the space between the frame and the laminate.
[0015] In one embodiment, the border includes a first side on the first surface, the width of which is greater than the width of the first adhesive portion; and / or, the border includes a second side on the second surface, the width of which is greater than the width of the second adhesive portion.
[0016] In one embodiment, the width of the first adhesive portion and the width of the second adhesive portion are both greater than or equal to 2.5 mm and less than or equal to 7.5 mm; and / or, the width of the third adhesive portion and the width of the fourth adhesive portion are both greater than 0 mm and less than or equal to 2.5 mm.
[0017] In one embodiment, the width of the first adhesive portion is equal to the width of the second adhesive portion; and / or, the width of the third adhesive portion is equal to the width of the fourth adhesive portion.
[0018] In one embodiment, the corner is a rounded corner.
[0019] In one embodiment, both the first tape and the second tape are aluminum foil tapes.
[0020] In one embodiment, the edge of the laminate has a plurality of corners, and there are a plurality of first tapes, each of which is wrapped around each corner in a corresponding manner.
[0021] In one embodiment, the first tape is located on the side of the second tape close to the laminate.
[0022] In the aforementioned photovoltaic module, a second adhesive tape is wrapped around the edge of the laminate to achieve edge sealing and protection. Simultaneously, by wrapping the corners of the laminate's edges with the first adhesive tape, the sealing effect at these corners is enhanced, resolving issues such as gaps in the frame at corners, incomplete filling of the adhesive at corners, or improper application of the second adhesive tape. Furthermore, the width of the first adhesive tape is greater than the width of the second adhesive tape; that is, the first tape is relatively wider, and the second tape is relatively narrower. Since the maximum deformation and stress points of the frame occur at the center of the frame under load, while the deformation and stress at the corners are relatively smaller, increasing the width of the first adhesive tape at the corners improves the sealing effect of the laminate without affecting the stability of the connection between the frame and the laminate when the frame is subsequently installed to the edge. Attached Figure Description
[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:
[0026] Figure 1 This is a schematic diagram of the structure of a photovoltaic module according to one embodiment.
[0027] Figure 2 for Figure 1 The image shows a magnified view of the photovoltaic module in section A.
[0028] Figure 3 for Figure 2 The diagram shows a photovoltaic module with the second adhesive tape concealed.
[0029] Explanation of reference numerals in the attached figures:
[0030] 10. Laminated component; 11. First surface; 12. Second surface; 13. Side surface; 20. First adhesive tape; 21. First body part; 22. First adhesive part; 23. Second adhesive part; 30. Second adhesive tape; 31. Second body part; 32. Third adhesive part; 33. Fourth adhesive part. Detailed Implementation
[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0037] As mentioned earlier, there is still a risk of water ingress at the edges of photovoltaic (PV) modules, especially at the corners. Extensive research by the inventors revealed that this is due to several factors: Firstly, the chamfered edges of the laminated components of the PV module make it easy for tape to wrinkle, curl, or bulge when applied using automated equipment, resulting in poor water-blocking and sealing at these corners. Secondly, during the assembly of the frame, the long and short sides of the frame are joined at the corners using corner brackets, creating tiny gaps that also pose a risk of water ingress. Additionally, deviations in the starting point of the adhesive applicator can lead to ineffective filling of the adhesive at the corners, resulting in gaps. Even if double-film encapsulation is used to reduce costs, the gaps in the frame, incomplete adhesive filling, and the tape application method all compromise the PV module's resistance to moisture and hot water vapor.
[0038] Furthermore, the width of the tape also affects the waterproofing performance of photovoltaic modules. If the tape is too narrow, it cannot effectively adhere to the upper and lower surfaces of the laminate, thus failing to provide a water-blocking effect. If the tape is too wide, the area of the adhesive within the frame that adheres to the upper and lower surfaces of the laminate will be reduced, leading to unstable connections between the frame and the laminate and a risk of frame detachment.
[0039] Based on this, one embodiment of this application provides a photovoltaic module, specifically, see [link to embodiment]. Figure 1 as well as Figure 2One embodiment of a photovoltaic module includes a laminate 10, a first adhesive tape 20, and a second adhesive tape 30. Exemplarily, the laminate 10 has a cuboid or other polyhedral structure, and the edges of the laminate 10 have corners. The first adhesive tape 20 covers the corners of the edges of the laminate 10, and the second adhesive tape 30 covers the edges of the laminate 10 and surrounds the laminate 10; wherein the width of the first adhesive tape 20 is greater than the width of the second adhesive tape 30.
[0040] In the aforementioned photovoltaic module, the edges of the laminate 10 are sealed and protected by wrapping a second adhesive tape 30 around its perimeter. Simultaneously, wrapping a first adhesive tape 20 around the corners of the laminate 10 enhances the sealing effect at these corners, resolving issues such as gaps in the frame at corners, incomplete filling of the adhesive at corners, or improper application of the second adhesive tape 30. Furthermore, the width of the first adhesive tape 20 is greater than the width of the second adhesive tape 30; that is, the first adhesive tape 20 is relatively wider, while the second adhesive tape 30 is relatively narrower. Since the maximum deformation and maximum stress of the photovoltaic module frame occur in the middle of the frame when it is under load, while the deformation and stress are smaller at the corners of the frame, by increasing the width of the first tape 20 located at the corner, the sealing effect of the laminate 10 can be improved without affecting the connection stability between the frame and the laminate 10 after the frame is installed to the edge of the laminate 10.
[0041] Specifically, in combination Figure 2 as well as Figure 3 In one embodiment, the laminate 10 includes a first surface 11 and a second surface 12 disposed opposite to each other, and a side surface 13 connecting the first surface 11 and the second surface 12, the side surface 13 having a corner. The first adhesive tape 20 includes a first body portion 21 adhered to the side surface 13, a first adhesive portion 22 adhered to the first surface 11, and a second adhesive portion 23 adhered to the second surface 12. The second adhesive tape 30 includes a second body portion 31 adhered to the side surface 13, a third adhesive portion 32 adhered to the first surface 11, and a fourth adhesive portion 33 adhered to the second surface 12.
[0042] Optionally, in one embodiment, the width of the first adhesive portion 22 is greater than the width of the third adhesive portion 32. That is, the width of the portion of the first tape 20 adhered to the first surface 11 is greater than the width of the portion of the second tape 30 adhered to the first surface 11. This strengthens the adhesion area between the first tape 20 and the first surface 11 without affecting the stability of the connection between the frame and the laminate 10, thereby improving the sealing and protection effect of the first tape 20 at the corner. And / or, the width of the second adhesive portion 23 is greater than the width of the fourth adhesive portion 33. That is, the width of the portion of the first tape 20 adhered to the second surface 12 is greater than the width of the portion of the second tape 30 adhered to the second surface 12. This increases the adhesion area between the first tape 20 and the second surface 12 without affecting the stability of the connection between the frame and the laminate 10, thereby improving the sealing and protection effect of the first tape 20 at the corner.
[0043] Optionally, in one embodiment, the photovoltaic module further includes a frame (not shown), which is fitted onto the edge of the laminate 10 and located on the side of the second adhesive tape 30 away from the laminate 10, i.e., the frame is located outside the second adhesive tape 30. Further, a sealant is provided between the frame and the laminate 10. By providing a frame at the edge of the laminate 10 and filling the space between the frame and the laminate 10 with sealant, the sealing effect on the edge of the laminate 10 can be further enhanced. Simultaneously, the frame's location outside the second adhesive tape 30 further enhances the connection stability between the second adhesive tape 30 and the laminate 10.
[0044] Furthermore, the frame includes a first side edge located on the first surface 11, the width of which is greater than the width of the first adhesive portion 22; and / or, the frame includes a second side edge located on the second surface 12, the width of which is greater than the width of the second adhesive portion 23. This ensures that the bonding area between the frame and the laminate 10 is sufficiently large, preventing the first adhesive tape 20 and the second adhesive tape 30 from affecting the bonding stability between the frame and the laminate 10.
[0045] Optionally, in one embodiment, the width of the first adhesive portion 22 is equal to the width of the second adhesive portion 23. For example, see [link to relevant documentation]. Figure 2The width of the first adhesive portion 22 and the width of the second adhesive portion 23 are both L1, and 2.5mm ≤ L1 ≤ 7.5mm. For example, L1 can be 2.5mm, 3mm, 4mm, 5mm, 6mm, or 7.5mm, etc. Specifically, the width of the first side and the width of the second side of the frame are usually greater than 7.5mm. By configuring L1 to be 2.5mm ≤ L1 ≤ 7.5mm, the sealing effect of the first tape 20 is ensured, and the first adhesive portion 22 and the second adhesive portion 23 of the first tape 20 are prevented from exceeding the first side and the second side of the frame, thus affecting the installation stability of the frame. Understandably, in another embodiment, the width of the first adhesive portion 22 and the width of the second adhesive portion 23 may not be equal, as long as they are greater than or equal to 2.5mm and less than or equal to 7.5mm.
[0046] Optionally, in one embodiment, the width of the third adhesive portion 32 is equal to the width of the fourth adhesive portion 33. For example, the width of both the third adhesive portion 32 and the fourth adhesive portion 33 is L2, and 0mm ≤ L2 ≤ 2.5mm. For example, L2 can be 0.5mm, 1mm, 1.5mm, 2mm, or 2.5mm, etc. By configuring L2 to 0mm ≤ L2 ≤ 2.5mm, the sealing effect of the second adhesive tape 30 on the edge of the laminate 10 is ensured while meeting the bonding area requirements between the frame and the laminate 10, thereby ensuring the bonding stability between the frame and the laminate 10. Understandably, in another embodiment, the width of the third adhesive portion 32 and the width of the fourth adhesive portion 33 may not be equal, as long as they are greater than or equal to 0mm and less than or equal to 2.5mm.
[0047] Optionally, in one embodiment, the edge corners of the laminate 10 are rounded, which can reduce stress concentration at the edge corners of the laminate 10 and also prevent the edge corners of the laminate 10 from being too sharp and puncturing the first tape 20 and the second tape 30.
[0048] Optionally, in one embodiment, both the first tape 20 and the second tape 30 are aluminum foil tapes. Aluminum foil tapes have advantages such as good adhesion, strong bonding force, and anti-aging properties, which can effectively improve the sealing effect on the edges of the laminate 10.
[0049] Optionally, in one embodiment, the laminate 10 has multiple corners at its edge, and there are multiple first adhesive tapes 20, with each first adhesive tape 20 correspondingly covering each corner. For example, in one embodiment, the laminate 10 includes four corners, each corner being covered with a first adhesive tape 20, thus providing comprehensive protection for all four corners of the laminate 10.
[0050] Optionally, in one embodiment, the first adhesive tape 20 is located on the side of the second adhesive tape 30 closest to the laminate 10. That is, the second adhesive tape 30 is located outside the first adhesive tape 20. During application, the first adhesive tape 20 is applied first, followed by the second adhesive tape 30. This enhances the stability of the first adhesive tape 20 bonded to the laminate 10, thereby strengthening the sealing effect of the first adhesive tape 20 at the corners of the laminate 10. Understandably, in other embodiments, the second adhesive tape 30 can be located inside, and the first adhesive tape 20 can be located outside. During application, the second adhesive tape 30 is applied first, followed by the first adhesive tape 20. This also effectively enhances the sealing effect at the corners of the laminate 10.
[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0052] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A photovoltaic module, characterized in that, include: Laminated component (10); The first tape (20) is wrapped around the corner of the edge of the laminate (10); as well as The second tape (30) covers the edge of the laminate (10) and is arranged around the laminate (10); wherein the width of the first tape (20) is greater than the width of the second tape (30).
2. The photovoltaic module according to claim 1, characterized in that: The laminate (10) includes a first surface (11) and a second surface (12) disposed opposite to each other, and a side surface (13) connected between the first surface (11) and the second surface (12), wherein the side surface (13) is formed with the corner; The first tape (20) includes a first body portion (21) that is pasted on the side (13), a first adhesive portion (22) that is pasted on the first surface (11), and a second adhesive portion (23) that is pasted on the second surface (12). The second tape (30) includes a second body part (31) that is pasted on the side (13), a third adhesive part (32) that is pasted on the first surface (11), and a fourth adhesive part (33) that is pasted on the second surface (12). Wherein, the width of the first adhesive part (22) is greater than the width of the third adhesive part (32), and / or, the width of the second adhesive part (23) is greater than the width of the fourth adhesive part (33).
3. The photovoltaic module according to claim 2, characterized in that, The photovoltaic module also includes a frame, which is fitted around the edge of the laminate (10) and is located on the side of the second tape (30) away from the laminate (10). The frame and the laminate (10) are filled with sealant.
4. The photovoltaic module according to claim 3, characterized in that, The border includes a first side on the first surface (11), the width of which is greater than the width of the first adhesive portion (22); and / or, the border includes a second side on the second surface (12), the width of which is greater than the width of the second adhesive portion (23).
5. The photovoltaic module according to claim 2, characterized in that, The width of the first adhesive portion (22) and the width of the second adhesive portion (23) are both greater than or equal to 2.5 mm and less than or equal to 7.5 mm; and / or, The width of the third adhesive part (32) and the width of the fourth adhesive part (33) are both greater than 0 mm and less than or equal to 2.5 mm.
6. The photovoltaic module according to claim 2, characterized in that, The width of the first adhesive portion (22) is equal to the width of the second adhesive portion (23); and / or, the width of the third adhesive portion (32) is equal to the width of the fourth adhesive portion (33).
7. The photovoltaic module according to claim 1, characterized in that, The corner is rounded.
8. The photovoltaic module according to claim 1, characterized in that, Both the first tape (20) and the second tape (30) are aluminum foil tapes.
9. The photovoltaic module according to claim 1, characterized in that, The edge of the laminate (10) has a plurality of corners, and there are a plurality of first tapes (20), each of the first tapes (20) correspondingly covering each corner.
10. The photovoltaic module according to any one of claims 1-9, characterized in that, The first tape (20) is located on the side of the second tape (30) near the laminate (10).