Soldering flux smearing mechanism of photovoltaic stitch welding machine

Abstract

The utility model discloses a soldering flux smearing mechanism of a photovoltaic stitch welding machine, which relates to the technical field of photovoltaic module processing, is fixed on a bus bar conveying mechanism and comprises a first support, a second support, a smearing pen fixing frame and a smearing pen which are connected in sequence. Wherein the second support is adjustably connected with the first support, the daubing pen fixing frame is detachably connected with the second support, the daubing pen is detachably clamped in the daubing pen fixing frame, and the daubing pen comprises a pen body, a pen point, a pen point and a daubing pen core; the interior of the pen body is hollow to form an inner cavity for containing scaling powder, the pen body is detachably connected with the pen point, the pen point is fixedly connected to the lower end of the pen point, and the lower end of the pen point is connected with the smearing refill. And the clamping position of the smearing pen is adjusted, so that the smearing pen core is in contact with the upper surface of the bus bar, and the scaling powder is smeared. The soldering flux smearing mechanism is additionally arranged on the stitch welding machine, so that the welding quality can be improved, the phenomena of insufficient soldering and solder skips are reduced, and the production efficiency and the overall performance of a photovoltaic module can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component processing, in particular to a flux smearing mechanism of a photovoltaic stack welding machine. Background Art

[0002] Photovoltaic stack welding machines are key equipment in the manufacturing process of photovoltaic cells. They use welding technology to fuse different layers of thin film materials into one, forming solar cell modules. In this process, the application of flux is crucial to improving welding quality and welding speed. Flux can effectively remove oxides from the metal surface, prevent secondary oxidation of the metal at high temperatures, reduce the surface tension of the liquid solder, promote heat conduction, and improve welding quality and efficiency. However, in the existing photovoltaic module busbar welding process, since flux is not used, problems such as cold joints and leaking welds are prone to occur after welding, affecting the reliability and performance of the module. In order to solve the above technical problems, it is necessary to add a mechanism to the existing stack welding machine to apply flux to the busbar. In this way, the problems of cold joints and poor welding results generated by the stack welding machine during the welding process can be effectively solved. Utility Model Content

[0003] The purpose of the utility model is to provide a flux applying mechanism for a photovoltaic stitch welding machine, so as to solve the above-mentioned technical problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following solution: a photovoltaic stitch welding machine flux coating mechanism, comprising:

[0005] a first bracket, detachably mounted on the busbar conveying mechanism, having a connecting section extending directly above the busbar;

[0006] a second bracket, parallel to the connecting section of the first bracket and mounted on the connecting section of the first bracket in an adjustable manner;

[0007] a smear pen holder, fixedly mounted on an end of the second bracket close to the bus bar, the smear pen holder being provided with a clamping portion;

[0008] The smear pen can be detachably clamped in the clamping portion, and the smear pen includes a pen body, a pen head, a pen tip and a smear pen core; the interior of the pen body is hollow to form an inner cavity for accommodating flux, the outlet end of the pen body is detachably connected to the pen head, the pen tip is fixed to the end of the pen head away from the pen body, and the end of the pen tip away from the pen head is connected to the smear pen core; the clamping position of the smear pen is adjusted so that the smear pen core contacts the upper surface of the busbar to apply flux.

[0009] The above structure aims to propose a photovoltaic stitch welding machine flux coating mechanism that can be easily installed on the existing stitch welding machine. By adding a flux coating mechanism to the stitch welding machine, not only can the welding quality be improved and the phenomenon of cold welding and leaking welding be reduced, but also the production efficiency and the overall performance of the photovoltaic module can be improved.

[0010] In an optional embodiment of the present invention, the smear pen fixing bracket includes a first clamping portion and a second clamping portion spaced apart along the length direction of the second bracket, and the inner sides of the first clamping portion and the second clamping portion have an arc-shaped clamping surface adapted to the outer diameter of the pen body.

[0011] In an optional embodiment of the present invention, the side surfaces of the first clamping portion and the second clamping portion are open to facilitate the insertion of the smear pen, and the first clamping portion and the second clamping portion are made of elastic metal material.

[0012] In an optional embodiment of the present invention, the pen tip is an inverted cone-shaped structure.

[0013] In an optional embodiment of the present invention, the pen tip is a spring hose, and a truncated cone coil spring is built into the hose.

[0014] In an optional embodiment of the present invention, the body of the smear pen is made of a transparent material and is marked with scale lines.

[0015] In an optional embodiment of the present invention, the upper end of the pen body of the smear pen is opened for filling flux, and an end cover is provided at the opening.

[0016] In an optional embodiment of the present invention, the first bracket includes a horizontal fixing section and a downwardly bent connecting section, the connecting section extends obliquely downward, and long slots are opened in the middle of the fixing section and the connecting section along the length direction.

[0017] In an optional manner of the present invention, the second bracket is connected to one side of the connecting section of the first bracket by means of bolts.

[0018] The utility model discloses the following technical effects:

[0019] The present invention provides a simple-structured, easy-to-use flux application mechanism for a photovoltaic stitch welding machine. The mechanism can be installed within the machine to apply flux to busbars within the machine, addressing issues of cold solder joints and poor welding quality during the welding process. The contact portion of the mechanism with the busbar utilizes a paintbrush-like application refill, which maintains stable contact with the busbar and ensures uniform and stable flux application. The body of the application pen is hollow and designed to hold flux. The refill can be removed from the pen tip, facilitating the addition of flux or replacement, ensuring continuous operation and improving efficiency. The refill pen is snap-fitted to the mounting bracket, allowing for easy disassembly. The two brackets are telescopically adjustable for easy vertical adjustment. The flux application mechanism for a photovoltaic stitch welding machine is suitable for use in the welding process of photovoltaic module stitch welding machines. It can be directly installed within the machine without requiring equipment modification. During busbar extraction, flux is evenly applied to the busbar, improving the welding quality between the busbar and the battery string. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a front view of an embodiment of the utility model installed on a busbar conveying mechanism;

[0022] Figure 2 This is an axonometric view of an embodiment of the utility model installed on a busbar conveying mechanism;

[0023] Figure 3 This is a structural diagram of a flux coating mechanism for a photovoltaic stitch welding machine according to an embodiment of the present invention;

[0024] Figure 4 This is an exploded view of the flux coating mechanism of the photovoltaic stitch welding machine according to an embodiment of the present utility model;

[0025] Figure 5 This is a structural diagram of a smear pen fixing frame in an embodiment of the present utility model;

[0026] Figure 6 This is a schematic structural diagram of the smear pen in Example 1 of the present utility model;

[0027] Figure 7 This is a schematic structural diagram of the smear pen in Example 2 of the present utility model;

[0028] Figure 8This is a schematic structural diagram of the truncated cone coil spring in Example 2 of the present utility model.

[0029] In the figure: 1. busbar conveying mechanism; 2. bolt 1; 3. first bracket; 4. bolt 2; 5. second bracket; 6. smear pen; 61. pen body; 62. pen head; 63. pen tip; 64. smear pen refill; 65. truncated cone coil spring; 7. smear pen fixing frame; 71. fixing frame body; 72. first clamping part; 73. second clamping part; 74. round hole; 8. bolt 3; 9. busbar. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Flux can reduce the surface tension between metals during the welding process, making it easier for the solder to chemically react with the welding materials (such as solar cells, wires, etc.) and form a strong connection. When the flux covers the surface of the molten solder, it can reduce the surface tension of the liquid solder and significantly improve the wetting performance. The application of flux can also remove oxides on the surface of the solder and the base material to be welded, so that the metal surface reaches the necessary cleanliness and prevents the surface from re-oxidation during welding. Suitable flux can also speed up the transfer of heat from the soldering iron tip to the solder and the surface of the object to be welded, making the welding process more efficient. In summary, flux plays a vital role in photovoltaic stitch welding machines. It can not only improve the quality of welding, but also enhance the stability and reliability of welding, thereby improving the overall performance of photovoltaic modules.

[0032] However, most welding machines used in existing welding processes are not equipped with a device for applying flux to the busbar 9. Although some existing welding machines have integrated flux dispensing functions, these new devices are expensive, large, and complex in structure, making them unsuitable for large-scale deployment. Therefore, how to add a small and convenient flux dispensing mechanism to existing welding equipment to solve the problem of applying flux to the busbar 9 has become an urgent problem to be solved by those skilled in the art.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] Example 1

[0035] Reference Figures 1 to 6As shown, embodiment 1 of the present invention provides a flux coating mechanism for a photovoltaic stitch welding machine, which is arranged in the machine platform of the busbar 9 welding equipment, specifically fixed on the busbar conveying mechanism 1, and includes a first bracket 3, a second bracket 5, a coating pen fixing bracket 7 and a coating pen 6 connected in sequence. Among them, the first bracket 3 serves as a support, is connected to the busbar conveying mechanism 1, and can be fixed above a cylinder of the busbar conveying mechanism 1 by a bolt 1 2. The first bracket 3 has a connecting section extending toward the top of the busbar 9, and the connecting section is used to install the second bracket 5. The second bracket 5 is parallel to the connecting section of the first bracket 3 and is adjustable in position on the connecting section of the first bracket 3. Specifically, the second bracket 5 can be fixedly connected to the first bracket 3 by a bolt 2 4, and the length of the entire bracket structure can be adjusted by changing the screw connection position of the second bracket 5 and the first bracket 3 to adapt to the assembly of the flux coating mechanism of this embodiment on different models of busbar conveying mechanisms 1. The bottom end of the second bracket 5 is adjacent to the busbar 9 and is connected to the smear pen holder 7 via a third bolt 8. The smear pen holder 7 is used to clamp and secure the smear pen 6, ensuring that the smear pen core 64 of the smear pen 6 maintains proper contact with the upper surface of the busbar 9, thereby achieving the purpose of applying flux to the busbar 9. The smear pen holder 7 is provided with a clamping portion, and the smear pen 6 is removably clamped and positioned in the clamping portion. By providing a cover for the smear pen holder 7, the smear pen 6 can be easily removed to quickly replace the smear pen 6 that has run out of flux. The removed smear pen 6 can be sent to another process for refilling of flux. The smear pen 6 includes a pen body 61, a pen head 62, a pen tip 63 and a smear pen core 64; the interior of the pen body 61 is hollow to form an inner cavity for accommodating flux, the outlet end of the pen body 61 is detachably connected to the pen head 62, the pen tip 63 is fixed to the end of the pen head 62 away from the pen body 61, and the end of the pen tip 63 away from the pen head 62 is connected to the smear pen core 64; adjust the clamping position of the smear pen 6 so that the smear pen core 64 contacts the upper surface of the bus bar 9, so that the flux can flow out smoothly and be evenly smeared on the bus bar 9.

[0036] In a specific embodiment, Figure 4 As shown, the first bracket 3 includes a horizontal fixed section and a downward-bent connecting section, the connecting section extends obliquely downward, and a long slot hole is opened in the middle of the fixed section and the connecting section along the length direction to arbitrarily adjust the installation position of the first bracket 3 and the busbar conveying mechanism 1, as well as arbitrarily adjust the installation position of the second bracket 5 and the first bracket 3.

[0037] In a specific embodiment, the second bracket 5 is detachably connected to one side of the connecting section of the first bracket 3 by a second bolt 4, which can be the upper side or the lower side.

[0038] In some optional embodiments, the middle portion of the second bracket 5 is also provided with a long slot along the length direction, just like the connecting section of the first bracket 3, so that the installation position of the second bracket 5 and the first bracket 3 can be adjusted arbitrarily, and the second bracket 5 has the possibility of being extended longer.

[0039] In a specific embodiment, the smear pen fixing frame 7 includes a first clamping portion 72 and a second clamping portion 73 spaced apart along the length direction of the second bracket 5. The inner sides of the first clamping portion 72 and the second clamping portion 73 have an arc-shaped clamping surface adapted to the outer diameter of the pen body 61 of the smear pen 6. It should be understood that in this specific embodiment, the pen body 61 of the smear pen 6 is a tubular structure, which is convenient for arbitrary rotation and adjustment of the contact mode between the smear pen core 64 and the bus bar 9.

[0040] In some optional embodiments, the side openings of the first clamping portion 72 and the second clamping portion 73 facilitate the insertion of the smear pen 6 and facilitate quick disassembly and installation.

[0041] In some optional embodiments, the first clamping portion 72 and the second clamping portion 73 are made of elastic materials, which can be elastic metal materials, such as spring steel, aluminum alloy, Fe-Ni-Cr series, Ni-Ct series, Ni-Cr-Nb series, Ni-Co-Cr series, Nb-Ti series, Fe-Ni-Co series and other elastic alloys; they can also be elastic composite materials, such as polyurethane, silicone rubber, nitrile rubber, fluororubber and other synthetic materials.

[0042] It should be understood that in actual applications, other structures of clamping components may be provided, such as clamps, elastic clips, magnetic clamping components, etc. Of course, some commonly used pneumatic clamping components, hydraulic clamping components, and electric clamping components can all achieve the clamping of the smear pen 6, but the simpler the clamping component, the more likely it is to achieve the purpose of rapid clamping required by the present invention, while also saving costs.

[0043] In a specific embodiment, the pen body 61 of the smear pen 6 is made of a transparent material, such as acrylic, polycarbonate, polyethylene terephthalate, polypropylene, etc., and scale lines are also marked on the pen body 61 to facilitate observation of the remaining amount of flux inside.

[0044] In some optional embodiments, the upper end of the pen body 61 of the smear pen 6 is open, and the flux can be directly added to the smear pen 6 through the upper opening, and an end cap is provided at the opening to seal the upper opening after filling.

[0045] In some optional embodiments, the pen body 61 and the pen tip 62 can be connected by threads or by plugging, but the connection must be sealed to prevent flux from leaking from the connection position.

[0046] In some alternative embodiments, the tip 63 of the applicator pen 6 is a reverse cone structure, which is beneficial to the outflow of the internal flux, and serves to connect the pen body 61 and the applicator core 64.

[0047] Embodiment 2

[0048] Referring to Figure 7 and Figure 8 As shown in FIG. 2, the utility model embodiment 2 provides another photovoltaic stitch welding machine flux applicator mechanism, which has basically the same structure as that of embodiment 1, and the only difference is that the tip 63 of the applicator pen 6 is a spring hose. The spring hose can be a tube body with a corrugated structure, which has several layers of corrugations in the axial direction and can deform when subjected to extrusion. Such a corrugated structure makes it have good flexibility and elasticity, and can offset the vibration generated during the transmission of the bus bar 9, thereby effectively protecting the applicator core 64 and the surface of the bus bar 9.

[0049] In a specific embodiment, the spring hose can be made of various materials, including PET (polyethylene terephthalate), PVC, plastic, etc., as well as corrugated deformable metals or alloys.

[0050] In a specific embodiment, the tube body of the spring hose is internally provided with a truncated conical spiral spring 65 (pavilion spring).

[0051] The photovoltaic stitch welding machine flux applicator mechanism provided by the utility model embodiment mainly solves the problem of virtual welding in the process of welding the bus bar 9 of the junction box, and can solve the problem of virtual welding generated during the operation of the stitch welding machine by improving the flux applicator structure added to the device in this process. The action of applying flux to the surface of the bus bar 9 in the machine can improve the welding effect of the stitch welding machine, effectively improve the problem of virtual welding of the bus bar 9 in this process, and improve product quality and reduce unnecessary resource waste in the production process.

[0052] The details of the utility model not described are conventional technical means known to those skilled in the art.

[0053] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0054] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A flux coating mechanism for a photovoltaic stitch welding machine, characterized in that: include: A first bracket (3) is detachably mounted on the busbar conveying mechanism (1) and has a connecting section extending directly above the busbar (9); A second bracket (5) is parallel to the connecting section of the first bracket (3) and is mounted on the connecting section of the first bracket (3) in an adjustable manner; a smear pen fixing frame (7) fixedly mounted on one end of the second bracket (5) close to the bus bar (9), and a clamping portion is provided on the smear pen fixing frame (7); A smear pen (6) is detachably clamped in the clamping portion, and the smear pen (6) comprises a pen body (61), a pen head (62), a pen tip (63) and a smear pen core (64); the pen body (61) is hollow inside to form an inner cavity for accommodating soldering flux, the outlet end of the pen body (61) is detachably connected to the pen head (62), the pen tip (63) is fixed to one end of the pen head (62) away from the pen body (61), and the end of the pen tip (63) away from the pen head (62) is connected to the smear pen core (64); the clamping position of the smear pen (6) is adjusted so that the smear pen core (64) contacts the upper surface of the busbar (9) to smear soldering flux.

2. The photovoltaic stitch welding machine flux coating mechanism according to claim 1, characterized in that: The smear pen fixing frame (7) comprises a first clamping portion (72) and a second clamping portion (73) spaced apart along the length direction of the second bracket (5); the inner sides of the first clamping portion (72) and the second clamping portion (73) have arc-shaped clamping surfaces adapted to the outer diameter of the pen body (61).

3. The photovoltaic stitch welding machine flux coating mechanism according to claim 2, characterized in that: The side openings of the first clamping portion (72) and the second clamping portion (73) facilitate the insertion of the smear pen (6), and the first clamping portion (72) and the second clamping portion (73) are made of elastic metal material.

4. The photovoltaic stitch welding machine flux coating mechanism according to claim 1, characterized in that: The pen tip (63) is an inverted cone-shaped structure.

5. The flux applying mechanism of the photovoltaic stitch welding machine according to claim 4, characterized in that: The pen tip (63) is a spring hose, and a truncated cone helical spring (65) is built into the hose.

6. The photovoltaic stitch welding machine flux coating mechanism according to claim 1, characterized in that: The pen body (61) of the smear pen (6) is made of a transparent material and is marked with scale lines.

7. The photovoltaic stitch welding machine flux coating mechanism according to claim 6, characterized in that: The upper end of the pen body (61) of the smear pen (6) is open for filling soldering flux, and an end cap is provided at the opening.

8. The flux applying mechanism of photovoltaic stitch welding machine according to claim 1, characterized in that: The first bracket (3) comprises a horizontal fixing section and a downwardly bent connecting section, the connecting section extends obliquely downward, and a long slot hole arranged along the length direction is opened in the middle of the fixing section and the connecting section.

9. The photovoltaic stitch welding machine flux coating mechanism according to claim 8, characterized in that: The second bracket (5) is connected to one side of the connecting section of the first bracket (3) by means of bolts.

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