Gluing method and device for photovoltaic frame and supporting adhesive tape

Abstract

The invention discloses a photovoltaic frame gluing method and device and a supporting adhesive tape, the photovoltaic frame comprises a mounting cavity for mounting a photovoltaic laminated part, the mounting cavity comprises a first wall, a second wall and a third wall which are sequentially bent and connected to form a C-shaped notch, and the inner wall of the first wall faces the surface of the photovoltaic laminated part; the method comprises the steps that a supporting rubber strip is installed on the inner wall of the first wall in advance; during gluing, it is ensured that the inner wall of the first wall faces upwards, the end of the photovoltaic laminated piece is placed into the installation cavity, the surface of the photovoltaic laminated piece is pressed on the supporting adhesive tape downwards, and then glue liquid is injected into the installation cavity from the position between the inner wall of the third wall and the bottom face of the photovoltaic laminated piece. According to the invention, glue overflow on the surface of the photovoltaic laminated piece can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic frames, and particularly to a method and device for applying glue to a photovoltaic frame, and a supporting rubber strip. Background Art

[0002] In the manufacturing process of photovoltaic modules, a glue application process is usually used to fix the photovoltaic laminate in the frame. The glue application process is an important link to ensure the structural stability and sealing performance of the module. However, the existing glue application methods have the following problems:

[0003] 1. Glue overflow and insufficient uniformity: After one-time glue application, due to improper control of the glue amount or unreasonable structural design, it is easy to have excessive glue overflow in some areas, while there may be insufficient glue amount in other areas. In addition, the glue overflow on the surface of the photovoltaic laminate will affect the normal operation (the bottom surface of the photovoltaic laminate usually does not affect).

[0004] 2. Lack of a support structure: After glue application, the panel may sink due to the action of gravity, especially when the colloid has not completely cured, this phenomenon is more obvious. This not only affects the thickness uniformity of the glue layer, but also may cause additional stress on the top of the frame, reducing the long-term reliability of the module.

[0005] 3. Difficulty in controlling the thickness of the glue layer: In the existing technology, there is a lack of effective means to accurately control the thickness of the glue application, resulting in the problems of too thin or too thick glue layers occurring frequently, which in turn affects the sealing effect and structural strength of the module.

[0006] 4. Bubble generation: Due to the high fluidity of the colloid and the lack of guidance, bubbles are easily generated during the glue application process. The existence of these bubbles may weaken its bonding performance, resulting in unstable overall quality. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a method and device for applying glue to a photovoltaic frame, and a supporting rubber strip, which can avoid glue overflow on the surface of the photovoltaic laminate.

[0008] To solve the above technical problem, in the first aspect, the present invention discloses a method for applying glue to a photovoltaic frame. The photovoltaic frame includes an installation cavity for installing a photovoltaic laminate. The installation cavity includes a first wall, a second wall, and a third wall that are sequentially bent and connected to form a C-shaped notch. The inner wall of the first wall faces the surface of the photovoltaic laminate. The method includes:

[0009] Pre-install a supporting rubber strip on the inner wall of the first wall;

[0010] When applying glue, ensure that the inner wall of the first wall faces upward. Place the end of the photovoltaic laminate into the installation cavity and press the surface of the photovoltaic laminate downward against the support rubber strip. Then, inject the glue liquid into the installation cavity between the inner wall of the third wall and the bottom surface of the photovoltaic laminate.

[0011] As an alternative implementation, the pre - installation of the support rubber strip on the inner wall of the first wall includes:

[0012] Apply glue liquid continuously along the length direction on the inner wall of the first wall, and after solidification, obtain the support rubber strip.

[0013] As another alternative implementation, the injection amount of the glue liquid is designed such that the width of the overflow glue on the bottom surface of the photovoltaic laminate is 0 - 1 mm.

[0014] As another alternative implementation, the diameter size of the support rubber strip is used to control the thickness of the glue layer on the surface of the photovoltaic laminate after glue application.

[0015] As another alternative implementation, the radial strain of the support rubber strip when pressed by the photovoltaic laminate is 20% - 60%.

[0016] As another alternative implementation, the surface of the support rubber strip is provided with a microporous structure, which is used to allow a small amount of glue liquid to penetrate to enhance the bonding effect and avoid glue overflow.

[0017] As another alternative implementation, the surface of the support rubber strip does not exceed the edge of the C - shaped notch.

[0018] The second aspect of the present invention discloses a support rubber strip for a photovoltaic frame. The photovoltaic frame includes an installation cavity for installing a photovoltaic laminate. The installation cavity includes a first wall, a second wall, and a third wall that are sequentially bent and connected to form a C - shaped notch. The inner wall of the first wall faces the surface of the photovoltaic laminate. The support rubber strip is fixed on the inner wall of the first wall, and the support rubber strip is used to support the surface of the photovoltaic laminate during glue application and limit the glue liquid from flowing to the surface of the photovoltaic laminate.

[0019] As an alternative implementation, the support rubber strip is a rubber strip obtained by applying glue along the length direction on the inner wall of the first wall, or the support rubber strip is a rubber strip directly pasted along the length direction on the inner wall of the first wall.

[0020] The third aspect of the present invention discloses a glue - applying device for a photovoltaic frame, including a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the steps of the method as described in the first aspect of the present invention.

[0021] The fourth aspect of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the method disclosed in the first aspect of the present invention are implemented.

[0022] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0023] Compared with the prior art, in the embodiments of the present invention, a support rubber strip is pre-installed on the first wall of the installation cavity. Since the first wall faces upward and the surface of the photovoltaic laminate faces downward, after pressing the surface of the photovoltaic laminate on the support rubber strip, the glue liquid flows from the bottom surface (or back surface) of the photovoltaic laminate to the surface located below. While supporting the photovoltaic laminate through the support rubber strip, the outflow of the glue liquid from the installation cavity is restricted, so that the overflow of the glue liquid on the surface of the photovoltaic laminate can be avoided; in addition, since the outlet of the glue liquid below is sealed, the glue liquid will only overflow from above, that is, the bottom surface of the photovoltaic laminate, without affecting the surface of the photovoltaic laminate; the glue liquid itself has fluidity, and sealing the bottom outlet of the glue liquid can promote the flow of the glue liquid in the cavity, make the glue liquid evenly distributed, and continuously extrude air bubbles, reducing the air bubbles in the final glue layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 is a schematic flowchart of a method for applying glue to a photovoltaic frame disclosed in an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of a support rubber strip for a photovoltaic frame disclosed in an embodiment of the present invention;

[0027] Figure 3 is disclosed in an embodiment of the present invention Figure 2 partial enlarged schematic view of part A therein;

[0028] Figure 4 is a schematic structural diagram of a glue application device for a photovoltaic frame disclosed in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] Embodiment 1

[0031] Refer to Figure 1 , the present invention discloses a method for applying glue to a photovoltaic frame. The photovoltaic frame includes an installation cavity for installing a photovoltaic laminate. The installation cavity includes a first wall, a second wall, and a third wall that are sequentially bent and connected to form a C-shaped notch. The inner wall of the first wall faces the surface of the photovoltaic laminate.

[0032] The method includes:

[0033] 101. Pre-install a support rubber strip on the inner wall of the first wall;

[0034] 102. When applying glue, ensure that the inner wall of the first wall faces upward, place the end of the photovoltaic laminate into the installation cavity, press the surface of the photovoltaic laminate downward on the support rubber strip, and then inject the glue liquid into the installation cavity from between the inner wall of the third wall and the bottom surface of the photovoltaic laminate.

[0035] In the embodiment of the present invention, a support rubber strip is pre-installed on the first wall of the installation cavity. Since the first wall faces upward and the surface of the photovoltaic laminate faces downward, after pressing the surface of the photovoltaic laminate on the support rubber strip, the glue liquid flows from the bottom surface (or back surface) of the photovoltaic laminate to the surface located below. While the support rubber strip supports the photovoltaic laminate, it restricts the glue liquid from flowing out of the installation cavity, thereby avoiding glue overflow on the surface of the photovoltaic laminate; in addition, since the outlet of the glue liquid below is sealed, the glue liquid will only overflow from above, that is, the bottom surface of the photovoltaic laminate, without affecting the surface of the photovoltaic laminate; the glue liquid itself has fluidity. Sealing the bottom outlet of the glue liquid can promote the flow of the glue liquid in the cavity, make the glue liquid evenly distributed, and continuously extrude air bubbles, reducing the air bubbles in the final glue layer.

[0036] In an optional embodiment, the pre-installing a support rubber strip on the inner wall of the first wall includes:

[0037] Continuously apply glue liquid along the length direction on the inner wall of the first wall, and obtain a support rubber strip after solidification.

[0038] In this embodiment, by directly coating the glue on the inner wall of the first wall and solidifying it to form the support rubber strip, the one-time molding of the support rubber strip can be achieved, which is simple and efficient. Moreover, the formed support rubber strip is tightly combined with the first wall and has good stability.

[0039] In yet another alternative embodiment, the injection amount of the glue is designed such that the width of the overflow glue on the bottom surface of the photovoltaic laminate is 0 - 1 mm. By precisely controlling the injection amount of the glue in this embodiment, it can ensure that the entire installation cavity is evenly filled, avoiding the problem of overflow glue caused by excessive glue (such as too wide overflow glue may affect the normal operation of the photovoltaic device), and at the same time ensuring sufficient bonding strength. This design is both economical and environmentally friendly.

[0040] In yet another alternative embodiment, the diameter size of the support rubber strip is used to control the thickness of the glue layer on the surface of the photovoltaic laminate after applying the glue. By reasonably designing the diameter of the support rubber strip in this embodiment, the thickness of the glue layer on the bottom surface of the photovoltaic laminate can be precisely controlled. This not only helps to improve the bonding effect and sealing performance, but also reduces material waste.

[0041] In yet another alternative embodiment, the support rubber strip does not deform under the downward pressure of the photovoltaic laminate. This embodiment ensures that during the installation process of the photovoltaic laminate, the support rubber strip can withstand a certain pressure without deforming, which can guarantee the long-term stability and reliability between the photovoltaic laminate and the frame.

[0042] In yet another alternative embodiment, the length of the support rubber strip is equal to the length of the first wall, and the two ends of the support rubber strip are respectively aligned with the two ends of the first wall.

[0043] In this embodiment, the overflow glue refers to the part of the glue that flows out of the installation cavity. By precisely matching the lengths of the support rubber strip and the first wall in this embodiment, it can ensure that the support rubber strip is evenly distributed within the first wall of the entire installation cavity, avoiding problems such as insufficient support or overflow glue caused by inconsistent lengths.

[0044] In yet another alternative embodiment, the surface of the support rubber strip does not exceed the edge of the C-shaped notch. By controlling the surface of the support rubber strip within the range of the C-shaped notch in this embodiment, it can avoid blocking the surface of the photovoltaic laminate and further ensure that no glue overflows onto the surface of the photovoltaic laminate.

[0045] Embodiment Two

[0046] See Figures 2-3, an embodiment of the present invention discloses a support rubber strip 1 for a photovoltaic frame 2. The photovoltaic frame 2 includes an installation cavity 21 for installing a photovoltaic laminate 3. The installation cavity 21 includes a first wall 21, a second wall 22, and a third wall 23 that are sequentially bent and connected to form a C-shaped notch. The inner wall of the first wall 21 faces the surface of the photovoltaic laminate 3. The support rubber strip 1 is fixed on the inner wall of the first wall 21. The support rubber strip 1 is used to support the surface of the photovoltaic laminate 3 during gluing and limit the glue liquid 4 from flowing onto the surface of the photovoltaic laminate 3.

[0047] In the embodiment of the present invention, the support rubber strip 1 is pre-installed on the first wall 21 of the installation cavity 21. Since the first wall 21 faces upward and the surface of the photovoltaic laminate 3 faces downward, after pressing the surface of the photovoltaic laminate 3 on the support rubber strip 1, the glue liquid 4 flows from the bottom surface (or the back surface) of the photovoltaic laminate 3 to the surface located below. While supporting the photovoltaic laminate 3 through the support rubber strip 1, the glue liquid 4 is restricted from flowing out of the installation cavity 21, thereby avoiding glue overflow on the surface of the photovoltaic laminate 3. Additionally, since the outlet of the glue liquid 4 below is sealed, the glue liquid 4 will only overflow from above, that is, the bottom surface of the photovoltaic laminate 3, without affecting the surface of the photovoltaic laminate 3. The glue liquid 4 itself has fluidity. Sealing the bottom outlet of the glue liquid 4 can promote the flow of the glue liquid 4 in the cavity, make the glue liquid 4 evenly distributed, and continuously extrude air bubbles, reducing the air bubbles in the final glue layer. In the embodiment, glue overflow refers to part of the glue liquid flowing out of the installation cavity 21.

[0048] In an optional embodiment, the support rubber strip 1 is a rubber strip obtained by applying glue along the length direction on the inner wall of the first wall 21, or the support rubber strip 1 is a rubber strip directly pasted along the length direction on the inner wall of the first wall 21. In this embodiment, the support rubber strip 1 is designed in the form of a rubber strip fixed along the length direction of the first wall 21, which can achieve a uniform and precise gluing effect. At the same time, by matching the required gluing thickness on the surface of the photovoltaic laminate 3, the stability and sealing of the structure are ensured.

[0049] In another optional embodiment, when the support rubber strip 1 is pressed by the photovoltaic laminate 3, the radial strain is 20% - 60%. It can slightly deform when the photovoltaic laminate 3 is pressed to adapt to the requirements of different thicknesses, ensure the stability of the internal structure of the installation cavity 21, and avoid the sealing glue failure caused by deformation or displacement.

[0050] In another optional embodiment, the cross-section of the support rubber strip is any one of a circle, a sector, a trapezoid, and a semi-circle.

[0051] In another optional embodiment, the diameter size of the support rubber strip 1 is designed to match the required gluing thickness on the surface of the photovoltaic laminate 3.

[0052] In yet another alternative embodiment, the injection amount of the adhesive liquid 4 is designed such that the width of the overflow adhesive on the bottom surface of the photovoltaic laminate 3 is 0 to 1 mm.

[0053] In yet another alternative embodiment, the surface of the support rubber strip 1 does not extend beyond the edge of the C-shaped notch.

[0054] In yet another alternative embodiment, the joint between the support rubber strip 1 and the first wall 21 is designed with a sealed fixation to prevent the adhesive liquid 4 from overflowing from the gap between the support rubber strip 1 and the first wall 21.

[0055] In yet another alternative embodiment, the surface of the support rubber strip 1 is provided with a microporous structure, which can allow a small amount of the adhesive liquid 4 to penetrate to enhance the bonding effect while avoiding the problem of adhesive overflow.

[0056] In yet another alternative embodiment, the sum of the height of the support rubber strip 1 and the height of the photovoltaic laminate 3 is less than the height of the C-shaped notch.

[0057] In yet another alternative embodiment, the surface of the support rubber strip 1 is anti-slip treated, so that the photovoltaic laminate 3 can be stably placed on the support rubber strip 1.

[0058] Embodiment III

[0059] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of a glue application device for a photovoltaic frame disclosed in an embodiment of the present invention, including a memory 201, a processor 202, and a computer program stored in the memory. The processor executes the computer program to implement the steps in the method disclosed in Embodiment I.

[0060] Specifically, automatic glue application can be achieved through a robot or a robotic arm. The implementation based on a robot / robotic arm can achieve precise positioning, stable operation, and accurate glue application, avoiding problems such as position deviation or uneven glue amount that may be caused by manual operation; the automatic system can real-time monitor key parameters (such as temperature, pressure, glue amount, etc.) during the glue application process and record relevant data for subsequent quality traceability and optimization improvement.

[0061] Embodiment IV

[0062] An embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps in the method disclosed in Embodiment I.

[0063] The disclosure of the content disclosed in the embodiments of the present invention is only for the preferred embodiments of the present invention, and is only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for applying glue to a photovoltaic frame, the photovoltaic frame including an installation cavity for installing a photovoltaic laminate, the installation cavity including a first wall, a second wall, and a third wall that are sequentially bent and connected to form a C-shaped notch, wherein the inner wall of the first wall faces the surface of the photovoltaic laminate, and is characterized in that, The method includes: Pre - install a support rubber strip on the inner wall of the first wall; When applying glue, ensure that the inner wall of the first wall faces upward, place the end of the photovoltaic laminate into the installation cavity and press the surface of the photovoltaic laminate downward onto the support rubber strip, and then inject glue liquid into the installation cavity between the inner wall of the third wall and the bottom surface of the photovoltaic laminate.

2. The caulking method according to claim 1, wherein The pre - installing the support rubber strip on the inner wall of the first wall includes: Continuously apply glue liquid along the length direction on the inner wall of the first wall, and after solidification, obtain the support rubber strip.

3. The caulking method according to claim 1, characterized in that, The injection volume of the glue liquid is designed to make the width of the overflow glue on the bottom surface of the photovoltaic laminate be 0 - 1 mm.

4. The caulking method according to claim 1, wherein The diameter size of the support rubber strip is used to control the thickness of the glue layer on the surface of the photovoltaic laminate after glue application.

5. The caulking method according to claim 1, wherein When the support rubber strip is pressed by the photovoltaic laminate, the radial strain is 20% - 60%.

6. The caulking method according to claim 1, characterized in that, The surface of the support rubber strip is provided with a microporous structure, which is used to allow a small amount of glue liquid to penetrate to enhance the bonding effect and avoid glue overflow.

7. The caulking method according to claim 1, characterized in that, The surface of the support rubber strip does not exceed the edge of the C - shaped notch.

8. A support rubber strip for a photovoltaic frame, the photovoltaic frame including an installation cavity for installing a photovoltaic laminate, the installation cavity including a first wall, a second wall, and a third wall that are sequentially bent and connected to form a C-shaped notch, wherein the inner wall of the first wall faces the surface of the photovoltaic laminate; characterized in that, The support rubber strip is fixed on the inner wall of the first wall, and the support rubber strip is used to support the surface of the photovoltaic laminate during glue application and limit the glue liquid from flowing to the surface of the photovoltaic laminate.

9. The support rubber strip for a photovoltaic frame according to claim 8, characterized in that, The support rubber strip is a rubber strip obtained by applying glue along the length direction on the inner wall of the first wall, or the support rubber strip is a rubber strip directly pasted along the length direction on the inner wall of the first wall.

10. A glue - applying device for a photovoltaic frame, comprising a memory, a processor, and a computer program stored on the memory, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1 - 7.

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