Stitch welding device and stitch welding tool set

Abstract

The utility model provides a stitch welding device and a stitch welding tool set. The stitch welding device comprises a back plate, a stitch welding tool set and a stitch welding tool set, the welding assembly comprises an upper platform and a lower platform, the lower platform is fixed to the back plate, at least one of the upper platform and the lower platform is arranged on the back plate in an up-down sliding mode, the upper platform is located over the lower platform, and the lower platform is located over the lower platform. And the upper platform and / or the lower platform are / is connected with an external power supply. According to the stitch welding device, the bus bar and the welding strip can be clamped through the upper platform and the lower platform, the upper platform and / or the lower platform are / is powered on, the bus bar and the welding strip between the upper platform and the lower platform are welded in an electric welding mode, and therefore the possibility of missing welding or insufficient welding is reduced.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation, and in particular to a shingling device and a shingling tooling kit. Background Technology

[0002] With the development of technology, the utilization of energy is receiving increasing attention. The role of photovoltaic power generation technology in daily life is becoming increasingly prominent. Photovoltaic power generation technology can convert light energy into electrical energy, making full use of nature's energy resources.

[0003] In the manufacturing process of photovoltaic modules, the solar cells are connected by solder ribbons. The first and last solar cells are welded to the busbars to form a circuit. If the first or last solar cell is defective, it is necessary to disconnect it from the busbars, replace the cell, and re-weld it.

[0004] During the rework process, after replacing the front and rear cells, a handheld soldering iron is used to solder the solder strip to the busbar. However, handheld soldering irons are prone to missed soldering or cold soldering. Once missed soldering or cold soldering occurs, it will affect the yield rate of the module and cause a loss of module revenue. Utility Model Content

[0005] To solve one of the above-mentioned technical problems, this utility model provides a stacking welding device and a stacking welding tooling set.

[0006] The first aspect of this utility model provides a lap welding device, comprising:

[0007] Back panel;

[0008] At least one welding assembly, the welding assembly including an upper platform and a lower platform, the lower platform being fixed to the back plate, at least one of the upper platform and the lower platform being slidably disposed on the back plate, and the upper platform being located directly above the lower platform, the upper platform and / or the lower platform being connected to an external power source.

[0009] Preferably, a slide rail is laid on the back plate, the upper platform is disposed in the slide rail, the upper platform moves up and down on the slide rail, and when the upper platform is located at the lower end of the slide rail, the lower surface of the upper platform is in contact with the upper surface of the lower platform.

[0010] Preferably, the welding assembly is in multiple groups, and the multiple groups of welding assemblies are arranged side by side on the back plate.

[0011] Preferably, the lap welding device further includes a crossbar, which is fixedly connected to each of the upper platforms.

[0012] Preferably, the back plate is provided with a plurality of slide rails arranged side by side, and each slide rail is provided with an upper platform. The upper platform moves up and down on the slide rail. When the upper platform is located at the bottom of the slide rail, the lower surface of the upper platform is in contact with the upper surface of the lower platform.

[0013] Preferably, the upper surfaces of the plurality of lower platforms are coplanar, and the upper surfaces of the plurality of upper platforms are coplanar.

[0014] Preferably, the lap welding device further includes a power supply module, which is electrically connected to the upper platform and / or the lower platform.

[0015] Preferably, the upper surface of the lower platform is covered with a high-temperature cloth.

[0016] Preferably, the back plate is provided with a hand-held part.

[0017] The second aspect of this utility model provides a stacking welding fixture kit, which includes multiple stacking welding devices as described in the first aspect of this utility model, wherein the number of welding components of the multiple stacking welding devices is different and / or the spacing between the multiple welding components is different.

[0018] The beneficial effects of this utility model are as follows: The stacking welding device proposed in this utility model can clamp the busbar and the welding strip through the upper platform and the lower platform, and energize the upper platform and / or the lower platform to weld the busbar and the welding strip between the upper platform and the lower platform by electric welding, so as to reduce the possibility of missed welding or incomplete welding. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the stacking welding device described in Embodiment 1 of this utility model;

[0021] Figure 2 This is a schematic diagram of the stacking welding device described in Embodiment 2 of this utility model;

[0022] Figure 3 This is a front view of the lap welding device described in Embodiment 2 of this utility model.

[0023] Figure label:

[0024] 1. Backplate, 2. Welding components, 3. Slide rail, 4. High-temperature cloth, 5. Crossbar, 6. Power supply module;

[0025] 2-1. Go up to the platform; 2-2. Go down to the platform. Detailed Implementation

[0026] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment proposes a lap welding device that can be applied to welding front and rear battery cells. The lap welding device specifically includes:

[0029] Back panel 1;

[0030] Welding assembly 2, mounted on back plate 1, is used for welding busbars and welding strips.

[0031] Specifically, in this embodiment, the back plate 1 serves to fix and support the welding assembly 2. The back plate 1 should be made of insulating material or have an insulating coating on its surface. The welding assembly 2 is provided on the back plate 1. The welding assembly 2 is connected to an external power source and is used to perform electric welding on the busbars and solder strips of the head and tail battery cells.

[0032] In this embodiment, the welding assembly 2 includes an upper platform 2-1 and a lower platform 2-2. Both the upper platform 2-1 and the lower platform 2-2 are made of conductive material. The lower platform 2-2 is fixed to the lower part of the back plate 1. The upper platform 2-1 is located directly above the lower platform 2-2, and the upper platform 2-1 is slidably connected to the back plate 1, meaning that the upper platform 2-1 can move up and down on the back plate 1 under external force. When the upper platform 2-1 moves to its lowest point, it can contact the lower platform 2-2.

[0033] In actual use, the upper platform 2-1 is lifted, and then the lap welding device is moved so that the lower platform 2-2 extends below the welding strip and busbar, placing the welding strip and busbar on the upper surface of the lower platform 2-2. Then, the upper platform 2-1 is lowered until it contacts the welding strip and busbar, at which point the welding strip and busbar are positioned between the upper platform 2-1 and the lower platform 2-2, forming a single unit. Subsequently, power is applied to the upper platform 2-1 and / or the lower platform 2-2, creating a short circuit between them to generate a large current. This causes the welding strip and busbar to melt and adhere together due to heat, achieving welding. Finally, the upper platform 2-1 is lifted, and the lap welding device is removed, completing the electric welding operation.

[0034] In this embodiment, the upper platform 2-1 and the lower platform 2-2 can clamp the busbar and the welding strip. The upper platform 2-1 and / or the lower platform 2-2 are energized, and the busbar and the welding strip between the upper platform 2-1 and the lower platform 2-2 are welded by electric welding to reduce the possibility of missed welds or incomplete welds.

[0035] In some alternative embodiments, the slidable connection between the upper platform 2-1 and the back plate 1 is achieved using a slide rail 3.

[0036] Specifically, a slide rail 3 is laid on the back plate 1, and an upper platform 2-1 is disposed in the slide rail 3. The upper platform 2-1 moves up and down on the slide rail 3. When the upper platform 2-1 is at the bottom of the slide rail 3, the lower surface of the upper platform 2-1 is in contact with the upper surface of the lower platform 2-2.

[0037] In some alternative embodiments, a hand-held portion (not shown) is provided on the back plate 1. By providing a hand-held portion on the back plate 1, it is convenient for the operator to operate the lap welding device to adjust the position of the lap welding device according to the position of the solder strip and the busbar.

[0038] The specific shape of the handle can be an arc shape, a T-shape, or other structures that are easy to grip with force. The handle can also be located on the back or top of the back panel 1; this embodiment does not impose any special limitations.

[0039] In some optional embodiments, the shingling apparatus further includes a power supply module electrically connected to the upper platform 2-1 and / or the lower platform 2-2 for energizing the upper platform 2-1 and / or the lower platform 2-2. This power supply module can be designed to be rechargeable, enhancing the portability of the shingling apparatus.

[0040] In some alternative embodiments, a high-temperature cloth 4 is laid on the upper surface of the lower platform 2-2. This high-temperature cloth 4 can be made of PTFE (polytetrafluoroethylene). This high-temperature cloth 4 can increase the strength of the weld between the solder strip and the busbar, improving the success rate of replacement and repair. After welding, the weld scars on the front of the busbar are clearly visible, ensuring the integrity of the appearance.

[0041] Example 2

[0042] Currently, most solar cells are multi-busbar or ultra-multi-busbar cells, resulting in a large number of welding points after cell replacement at the beginning and end. Taking a 16-busbar cell as an example, after cell replacement, a total of 16 welding points are required for the solder strips and busbars. If any one of these points is missed or poorly welded, it will cause a striped shadow on the finished EL (electrode) panel, affecting the module yield and resulting in lost module revenue.

[0043] To address the aforementioned situation of multi-busbar or ultra-multi-busbar solar cell replacement welding, this embodiment proposes a stacking welding device that can be applied to welding multi-busbar or ultra-multi-busbar solar cells. For example... Figure 2As shown, the lap welding device specifically includes:

[0044] Back panel 1;

[0045] Multiple welding components 2 are arranged side by side on the back plate 1 for simultaneous welding of multiple busbars and welding strips.

[0046] Specifically, in this embodiment, based on embodiment 1, the welding assembly 2 is designed as multiple sets. These multiple sets of welding assemblies 2 are located on the same side of the back plate 1 and are arranged side-by-side on the back plate 1. Each set of welding assemblies 2 has the same structure, including an upper platform 2-1 and a lower platform 2-2. The upper platform 2-1 is slidably mounted on the back plate 1 and moves up and down above the lower platform 2-2. The upper platform 2-1 of all welding assemblies 2 is fixed to a crossbar 5, such as... Figure 3 As shown. This crossbar 5 allows all upper platforms 2-1 to move synchronously, simplifying the operation process and improving work efficiency.

[0047] In actual use, the operator lifts all upper platforms 2-1 using the crossbar 5, then moves the lap welding device so that the lower platform 2-2 extends below the welding strip and busbar, ensuring that each welding strip and busbar is positioned on the upper surface of its corresponding lower platform 2-2. Then, the operator lowers all upper platforms 2-1 using the crossbar 5 until each upper platform 2-1 contacts the welding strip and busbar at its corresponding position. At this point, each welding strip and busbar is positioned between its corresponding upper platform 2-1 and lower platform 2-2, forming a single unit. Subsequently, all upper platforms 2-1 and / or lower platforms 2-2 are energized, creating a short circuit between them to generate a large current. This causes the welding strip and busbar to melt and adhere together due to heat, achieving welding. Finally, the operator lifts all upper platforms 2-1 using the crossbar 5 and removes the lap welding device, completing the electric welding operation.

[0048] In this embodiment, by synchronously moving multiple sets of welding components 2, all the welding strips and busbars to be welded can be welded simultaneously, effectively improving the welding speed and saving working time.

[0049] In some alternative embodiments, the slidable connection between the upper platform 2-1 and the back plate 1 is achieved using a slide rail 3.

[0050] Specifically, multiple slide rails 3 are laid side by side on the back plate 1. An upper platform 2-1 is provided on each slide rail 3. The upper platform 2-1 moves up and down on the slide rail 3. When the upper platform 2-1 is at the bottom of the slide rail 3, the lower surface of the upper platform 2-1 is in contact with the upper surface of the lower platform 2-2.

[0051] In some optional embodiments, the upper surfaces of the multiple lower platforms 2-2 are coplanar, and the upper surfaces of the multiple upper platforms 2-1 are coplanar, that is, ensuring that the distance between the upper platform 2-1 and the lower platform 2-2 of each group of welding components 2 is equal, and ensuring that the welding strip and the busbar are on the same horizontal plane on the surface of the lower platform 2-2, so as to ensure the accuracy of welding.

[0052] In some optional embodiments, the cladding assembly further includes a power supply module 6, such as Figure 3 As shown, the power supply module 6 is electrically connected to all upper platforms 2-1 and / or all lower platforms 2-2 to energize them, enabling all welding components 2 to simultaneously weld the solder strips and busbars. This power supply module 6 can be designed as a rechargeable module, enhancing the portability of the lap welding device.

[0053] Example 3

[0054] This embodiment proposes a stacking welding fixture kit, which includes multiple stacking welding devices. The specific structure and working principle of these devices can be found in Embodiments 1 and 2, and will not be repeated here. The multiple stacking welding devices in this embodiment have different specifications, specifically reflected in the difference in the number of welding components 2, or, when there are multiple sets of welding components 2, the difference in the spacing between adjacent welding components 2. By setting multiple stacking welding devices of different specifications, the most suitable stacking welding device can be selected for welding according to the number of main grids or the spacing between main grids of the solar cells, making it more universally applicable.

[0055] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A butt welding apparatus characterized by comprising: The application relates to a butt welding device. The butt welding device comprises a back plate, at least one set of welding assemblies, wherein the welding assemblies comprise upper platforms and lower platforms, the upper platforms and the lower platforms are arranged on the back plate in a slidable manner, the upper platforms are arranged above the lower platforms, and the upper platforms and / or the lower platforms are connected to an external power supply. The back plate is provided with slide rails, the upper platforms are arranged in the slide rails, the upper platforms move up and down on the slide rails, and the lower surfaces of the upper platforms are in contact with the upper surfaces of the lower platforms when the upper platforms are located at the lowermost ends of the slide rails.

2. The apparatus according to claim 1, wherein The welding assemblies are multiple sets, and the multiple sets of welding assemblies are arranged side by side on the back plate.

3. The device according to claim 1, characterized in that The butt welding device further comprises a cross rod, and the cross rod is fixedly connected to each of the upper platforms.

4. The device according to claim 3, characterized in that The back plate is provided with multiple slide rails arranged side by side, each of the slide rails is provided with one of the upper platforms, the upper platforms move up and down on the slide rails, and the lower surfaces of the upper platforms are in contact with the upper surfaces of the lower platforms when the upper platforms are located at the lowermost ends of the slide rails.

5. The device according to claim 3 or 4, characterized in that The upper surfaces of the multiple lower platforms are coplanar, and the upper surfaces of the multiple upper platforms are coplanar.

6. The device according to claim 3, wherein The butt welding device further comprises a power supply module, and the power supply module is electrically connected to the upper platforms and / or the lower platforms.

7. The device of claim 1, wherein The upper surfaces of the lower platforms are provided with high-temperature cloth.

8. The device of claim 1, wherein, The back plate is provided with a hand-held part.

9. The apparatus of claim 1 wherein, The butt welding device set comprises multiple butt welding devices according to claim 1, the number of welding assemblies of the multiple butt welding devices is different, and / or the intervals between the multiple welding assemblies are different.

10. A package of welding fixtures, characterized in that, ​

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