Bus bar welding machine

Abstract

The utility model provides a bus bar welding machine, and belongs to the field of photovoltaic cell processing. The bus bar welding machine comprises a conveying belt, long edge restoration mechanisms, short edge restoration mechanisms, a bus bar welding device and a welding jacking mechanism, the long edge restoration mechanisms are arranged on the two sides of the conveying belt, the short edge restoration mechanisms are arranged in the conveying belt, the bus bar welding device is arranged above the conveying belt, and the welding jacking mechanism is arranged on the conveying belt. And the welding jacking mechanism is arranged below the conveying belt. Compared with the prior art, the EPE strip can be adhered to the bus bar in the process of welding the bus bar and welding a lead of a battery string, the EPE strip is prevented from being adhered to an FR4 plate, and more efficient and accurate welding is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic cell processing, and specifically relates to a busbar welding machine. Background Technology

[0002] Crystalline solar panels are devices that convert solar energy into electrical energy using the photovoltaic effect. Also known as photovoltaic solar panels, they typically consist of multiple photovoltaic cells that absorb sunlight and convert it into direct current (DC) electricity. These panels can be installed on building rooftops, the ground, or other suitable areas to generate or supply electricity. As an important means of clean energy generation, photovoltaic solar panels are receiving increasing attention and widespread application. Globally, governments and businesses are investing in photovoltaic power generation projects to reduce dependence on traditional fossil fuels, decrease environmental pollution, and promote sustainable development.

[0003] During the processing of crystalline solar cells, busbars typically require welding. However, in existing technologies, the welding process generates high temperatures, which can cause the EPE strips to stick to the FR4 board—an undesirable outcome that is difficult to avoid in current techniques. Therefore, this invention provides a busbar welding machine. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a busbar welding machine that avoids simultaneously attaching EPE strips to the FR4 board during the welding process, ensuring more efficient and accurate welding.

[0005] This utility model is achieved through the following technical solution:

[0006] A busbar welding machine includes a conveyor belt, a long side alignment mechanism, a short side alignment mechanism, a busbar welding device, and a welding support mechanism. The long side alignment mechanism is disposed on both sides of the conveyor belt, the short side alignment mechanism is disposed inside the conveyor belt, the busbar welding device is disposed above the conveyor belt, and the welding support mechanism is disposed below the conveyor belt.

[0007] As a preferred technical solution, it also includes a fume extraction duct for discharging welding fumes, the fume extraction duct being disposed above the conveyor belt.

[0008] As a preferred technical solution, the long side alignment mechanism includes a long side telescopic cylinder and a long side alignment guide wheel, wherein the long side alignment guide wheel is connected to the movable end of the long side telescopic cylinder in a transmission connection.

[0009] As a preferred technical solution, the short side alignment mechanism includes a short side lifting cylinder and a short side alignment guide wheel, wherein the short side alignment guide wheel is connected to the movable end of the short side lifting cylinder.

[0010] As a preferred technical solution, the busbar welding device includes a flux nozzle, a welding module, and a welding block. The flux nozzle is disposed on the side of the welding module, and the welding block is connected to the welding module.

[0011] As a preferred technical solution, the welding block and the welding module are detachably connected.

[0012] As a preferred technical solution, a waste cup is provided below the flux nozzle.

[0013] As a preferred technical solution, the welding support mechanism includes a support cylinder and a support block, wherein the support block is connected to the movable end of the support cylinder.

[0014] As a preferred technical solution, the bottom of the welding support mechanism is also provided with an adjusting slide rail, and the welding support mechanism is slidably connected to the adjusting slide rail.

[0015] As a preferred technical solution, the busbar welding machine also includes a frame, and the busbar welding device further includes a flux storage assembly, which includes a flux storage tank and a pull-out plate. The pull-out plate is slidably connected to the frame via a pull-out slide rail, the flux storage tank is fixed to the pull-out plate, and the flux nozzle is connected to the flux storage tank.

[0016] Beneficial effects:

[0017] This invention uses a conveyor belt to transport FR4 boards, a long-side alignment mechanism to align the long sides of the FR4 boards, and a short-side alignment mechanism to align the short sides of the FR4 boards. A busbar welding device sprays welding flux and welds the busbars to the battery string leads to form a circuit. During the welding process, the EPE strip is lifted by the cooperation of a welding support mechanism and the FR4 board. The high temperature during welding softens the EPE strip and adheres it to the busbar, ensuring high efficiency and accuracy in welding. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a busbar welding machine;

[0019] Figure 2 This is a structural diagram of the conveyor belt, the long-side alignment mechanism, and the short-side alignment mechanism.

[0020] Figure 3 This is an enlarged view of the structure of the busbar welding device and the welding support mechanism;

[0021] Figure 4 This is a partial schematic diagram of the busbar welding device;

[0022] Figure 5 A structural layout diagram of a flux storage device;

[0023] Figure 6 This is a schematic diagram of the frame structure;

[0024] Attached image labels:

[0025] 1. Conveyor belt; 2. Long side alignment mechanism; 3. Short side alignment mechanism; 4. Busbar welding device; 5. Welding support mechanism; 6. Smoke duct; 21. Long side telescopic cylinder; 22. Long side alignment guide wheel; 31. Short side lifting cylinder; 32. Short side alignment guide wheel; 41. Flux nozzle; 42. Welding module; 43. Welding pressure block; 51. Support cylinder; 52. Support block; 7. Frame; 44. Flux storage tank; 45. Pull-out plate; 8. FR4 plate; 81. Hole. Detailed Implementation

[0026] To further explain the technical solution of this utility model, a busbar welding machine will be clearly and completely described below with reference to the accompanying drawings.

[0027] It should be noted that the terms such as “inner,” “middle,” and “one” used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered as part of the scope of implementation of this utility model, as stated above.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

[0029] Example:

[0030] Please refer to Figures 1 to 6 As shown in the attached diagram, this utility model provides a busbar welding machine. Figure 1 It includes a conveyor belt 1, a long side alignment mechanism 2, a short side alignment mechanism 3, a busbar welding device 4, and a welding support mechanism 5. The long side alignment mechanism 2 is disposed on both sides of the conveyor belt 1, the short side alignment mechanism 3 is disposed inside the conveyor belt 1, the busbar welding device 4 is disposed above the conveyor belt 1, and the welding support mechanism 5 is disposed below the conveyor belt 1.

[0031] During operation, the FR4 plate 8 is conveyed via conveyor belt 1, such as... Figure 4 As shown, the FR4 board 8 has multiple pre-set holes 81 for cooperation with the welding support mechanism 5. The long side of the FR4 board 8 is aligned by the long side alignment mechanism 2, and the short side is aligned by the short side alignment mechanism 3. The busbar welding device 4 sprays welding flux, atomizing it and applying it to a defined area around the leads. The busbar welding device 4 welds the busbar to the battery string leads to form a circuit. During welding, the welding support mechanism 5 and the holes 81 of the FR4 board 8 work together to lift the EPE strip. The high temperature during welding softens the EPE strip, thus adhering it to the busbar and preventing it from falling off the battery string, ensuring more efficient and accurate welding. The EPE strip is pre-placed on the FR4 board 8, and the busbar is also placed on the FR4 board 8.

[0032] The busbar welding machine of this application also includes a frame 7, and a conveyor belt 1, a long side alignment mechanism 2, a short side alignment mechanism 3, a busbar welding device 4, and a welding support mechanism 5 are all mounted on the frame 7.

[0033] Specifically, the manifold welding machine also includes a fume extraction pipe 6 for discharging welding fumes. The fume extraction pipe 6 is located above the conveyor belt 1, and the welding fumes can be discharged through the fume extraction pipe 6.

[0034] The fume extraction duct 6 can exhaust welding fumes through the principle of negative pressure suction. Specifically, the fume extraction duct 6 is connected to a fan or suction device, which is used to exhaust the welding fumes.

[0035] Specifically, please refer to the appendix. Figure 2 The long side alignment mechanism 2 includes a long side telescopic cylinder 21 and a long side alignment guide wheel 22. The long side alignment guide wheel 22 is kinetically connected to the movable end of the long side telescopic cylinder 21. The long side is aligned via the long side alignment guide wheel 22, and the long side telescopic cylinder 21 allows the long side alignment guide wheel 22 to extend and retract. The long side telescopic cylinder 21 drives the long side alignment guide wheel 22 to move closer to or further away from the conveyor belt 1, thereby aligning both sides of the FR4 plate 8 located on the conveyor belt 1. There are multiple long side alignment mechanisms 2, and these multiple long side alignment mechanisms 1 are spaced apart along the length of the conveyor belt 1.

[0036] Specifically, the short-side alignment mechanism 3 includes a short-side lifting cylinder 31 and a short-side alignment guide wheel 32. The short-side alignment guide wheel 32 is connected to the movable end of the short-side lifting cylinder 31, and the short side is aligned through the short-side alignment guide wheel 32. The short-side lifting cylinder 31 enables the short-side alignment guide wheel 32 to be raised and lowered, and can be flexibly adjusted according to the functional requirements of alignment or avoidance. There are two short-side alignment mechanisms 3, which are arranged opposite to each other, and the two short-side alignment mechanisms 3 are used to align both ends of the FR4 plate 8.

[0037] Specifically, please refer to the appendix. Figure 3 , Figure 4 , Figure 5 The busbar welding device 4 includes a flux nozzle 41, a welding module 42, and a welding block 43. The flux nozzle 41 is located on the side of the welding module 42, and the welding block 43 is connected to the welding module 42. During operation, flux is added through the flux nozzle 41, and the welding module 42 heats up to perform compaction welding.

[0038] In one embodiment, the busbar welding device 4 may further include linear guide rail modules in three directions: X-axis, Y-axis, and Z-axis. The flux nozzle 41, welding module 42, and welding pressure block 43 are all connected to the linear guide rail modules in the three directions, and their positions are adjusted by the linear guide rail modules. The flux nozzle 41 can be an existing mist spray valve nozzle. The flux nozzle 41 is connected to the flux storage liquid through a pipe, and the flux delivery is controlled by a control valve. This application automatically and evenly sprays flux to the lead wire position through the setting of the flux nozzle 41, and the spraying amount and spraying area are adjustable. The height of the flux nozzle 41 can also be controlled by a cylinder.

[0039] In one embodiment, the busbar welding device 4 further includes a flux storage assembly, which includes a flux storage tank 44 and a pull-out plate 45. The pull-out plate 44 is slidably connected to the frame 7 via a pull-out slide rail, and the flux storage tank 44 is fixed to the pull-out plate 45 by welding or bolting. When flux needs to be added, the flux storage tank 44 is pulled out of the frame 7 by pulling the pull-out plate 45, thus facilitating flux addition. The flux nozzle 41 is connected to the flux storage tank 44 via a pipe.

[0040] In one embodiment, the welding module 42 generates high temperatures through an internal heating element (electromagnetic induction heating or resistance heating) to heat the busbar and battery string leads to the welding temperature for welding. The welding module 42 may also be equipped with a temperature sensor to monitor the welding temperature in real time during welding. This welding module 42 may also be based on existing technology.

[0041] In one embodiment, the welding pressure block 43 and the welding module 42 are detachably connected. This detachable connection allows the welding pressure block 43 to be replaced according to different product specifications. The welding pressure block 43 and the welding module 42 can be connected by bolts or similar means, facilitating disassembly. In one embodiment, the welding pressure block 43 can be an elastic pressure head. During welding, the twelve leads of a 182mm battery cell are individually assigned to the welding pressure head. When the welding module 42 is replaced, it can be used to weld six or nine leads of a 165mm battery cell.

[0042] Specifically, a waste cup can be provided below the flux nozzle 41. The waste cup is used to collect flux. Specifically, flux will crystallize and cause nozzle blockage if it is not used for a long time. During the equipment shutdown period, flux can be sprayed into the waste cup a few times at regular intervals to avoid the flux nozzle 41 crystallizing and blocking.

[0043] Specifically, the welding support mechanism 5 includes a support cylinder 51 and a support block 52. The support block 52 is connected to the movable end of the support cylinder 51. During operation, the support cylinder 51 drives the support block 52 to push upwards. Furthermore, the support block 52 can be configured in multiple pieces, such as two, three, or four, depending on usage requirements. The support block 52 cooperates with the perforated plate 81 on the FR4 plate 8. During busbar welding, the support block 52 passes through the perforated hole 81 on the FR4 plate 8 and pushes the EPE strip open, preventing the EPE strip from contacting the FR4 plate 8 and avoiding the EPE strip from heating and sticking to the FR4 plate 8 during busbar welding. Furthermore, the bottom of the welding support mechanism 5 is also provided with an adjusting slide rail. The welding support mechanism 5 is slidably connected to the adjusting slide rail 53, allowing the adjusting slide rail to adjust the position of the welding support mechanism 5 to accommodate products of different specifications.

[0044] The above structure allows the present invention to avoid simultaneously sticking the EPE strip to the FR4 plate during the process of welding the busbar to the FR4 plate, thus ensuring more efficient and accurate welding.

[0045] It should be noted that the aforementioned "EPE strip" is a type of foamed polyethylene strip, commonly used for protection and insulation in photovoltaic cell processing. The aforementioned "FR4 board 8" is a glass fiber reinforced epoxy resin board, possessing excellent flame retardancy, mechanical properties, and electrical insulation, and is commonly used for support and insulation of photovoltaic cells.

[0046] This utility model is not limited to the above-described embodiments. If any modifications or variations of this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims of this utility model and equivalent technologies, this utility model also includes such modifications and variations.

Claims

1. A busbar welding machine characterized by: It includes a conveyor belt, a long side alignment mechanism, a short side alignment mechanism, a busbar welding device, and a welding support mechanism. The long side alignment mechanism is located on both sides of the conveyor belt, the short side alignment mechanism is located inside the conveyor belt, the busbar welding device is located above the conveyor belt, and the welding support mechanism is located below the conveyor belt.

2. The busbar welding machine of claim 1, wherein: It also includes a fume extraction duct for discharging welding fumes, the fume extraction duct being positioned above the conveyor belt.

3. The bus bar welding machine of claim 1, wherein: The long side alignment mechanism includes a long side telescopic cylinder and a long side alignment guide wheel, and the long side alignment guide wheel is connected to the movable end of the long side telescopic cylinder.

4. The bus bar welding machine of claim 1, wherein: The short-side alignment mechanism includes a short-side lifting cylinder and a short-side alignment guide wheel, wherein the short-side alignment guide wheel is connected to the movable end of the short-side lifting cylinder.

5. The bus bar welding machine of claim 1, wherein: The busbar welding device includes a flux nozzle, a welding module, and a welding block. The flux nozzle is located on the side of the welding module, and the welding block is connected to the welding module.

6. The bus bar welding machine of claim 5, wherein: The welding block and welding module are detachably connected.

7. The bus bar welding machine of claim 5, wherein: A waste cup is provided below the flux nozzle.

8. The busbar welding machine according to any one of claims 1 to 7, characterized in that: The welding support mechanism includes a support cylinder and a support block, and the support block is connected to the movable end of the support cylinder.

9. The bus bar welding machine of claim 8, wherein: The bottom of the welding support mechanism is also provided with an adjusting slide rail, and the welding support mechanism is slidably connected to the adjusting slide rail.

10. The bus bar welding machine of claim 5, wherein: The busbar welding machine also includes a frame, and the busbar welding device also includes a flux storage component. The flux storage component includes a flux storage tank and a pull-out plate. The pull-out plate is slidably connected to the frame via a pull-out slide rail. The flux storage tank is fixed on the pull-out plate, and the flux nozzle is connected to the flux storage tank.

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