Bus bar electromagnetic welding device

Abstract

The utility model discloses a bus bar electromagnetic welding device which comprises a horizontal moving part and an electromagnetic welding part, the horizontal moving part comprises a motor sliding table module and is fixedly connected with the electromagnetic welding part through a bearing plate on the motor sliding table module, the electromagnetic welding part comprises a welding lifting air cylinder, and the front end of the welding lifting air cylinder is connected with a welding bottom plate. At least two rows of threaded holes are formed in the welding bottom plate, position adjusting blocks are fixedly connected to the threaded holes, and electromagnetic welding assemblies are fixedly connected to the position adjusting blocks; the electromagnetic welding assembly comprises an electromagnetic welding shell, a heat dissipation groove and a dovetail groove are formed in the electromagnetic welding shell, the electromagnetic welding shell is provided with a welding core, and the welding core comprises a pressure welding head, a magnetic core body and an electromagnetic coil. And the welding position can be accurately controlled through the equipment horizontal moving part. The position adjusting block and the threaded holes in different positions of the welding bottom plate are mutually fixed, different fixing positions of the electromagnetic welding assembly can be achieved, and therefore battery strings of different sizes and specifications can be welded.

Description

Technical Field

[0001] This utility model relates to the field of solar cell welding technology, and in particular to a busbar electromagnetic welding device. Background Technology

[0002] A photovoltaic (PV) module consists of PV cells connected in series to form a cell string, which is then connected in series or parallel via busbars to conduct current outwards. A busbar is a conductive strip that connects the electrical energy generated by the PV cells; it is also called a cell connector. The busbar is connected to the cells through a welding process to ensure efficient current transmission. In a PV module, multiple welding strips are laid parallel to each other on the surface of the cells, with the ends of the welding strips extending to both sides of the cells and welding them to the busbars. The function of the busbar is to collect and transmit the current generated by the cells to the junction box.

[0003] The traditional method of connecting photovoltaic cells and busbars is to use a soldering iron. However, as photovoltaic cells become thinner, the traditional soldering method is more likely to cause cracks and cannot meet the welding requirements of thin cells. Furthermore, the difference in thermal stress between the photovoltaic cells and busbars makes it easier for the photovoltaic cells to warp after welding.

[0004] Chinese Patent Publication (Announcement) No.: CN106181153B, Patent Title: A Busbar Welding Device.

[0005] Its background technology describes the technical problem that "

[0003] traditional busbar welding requires removing the battery string, arranging it manually, and welding manually, resulting in poor welding effect, unstable quality, and potential breakage during welding, affecting welding efficiency." It discloses the technical solution of "a busbar welding device, characterized in that it includes a storage bin; the storage bin is provided with a feeding section, ... a driving device is installed on the bottom plate, and the driving device is connected to the storage rack," achieving the technical effect that "

[0014] the busbar welding device of the present invention achieves automation of feeding and welding through the setting of the feeding section and the welding section, avoiding the impact of manual material handling and welding on welding quality, and achieving stable welding of the busbar."

[0006] In its embodiment, “

[0027] ...In this embodiment, the lifting motor drives the welding part 3 to descend, thereby driving the material taking head 11 to descend. The material taking head 11 sucks up the busbar. The lifting motor and the transverse motor drive the welding part 3 to move to the welding position. The lifting motor drives the welding part 3 to descend. After the material taking head 11 descends to the position, the lifting motor drives the welding part 3 to continue to descend, thereby making the material taking head 11 pressed under the action of the elastic device 12, and the welding head 14 continues to descend. The protrusion on the welding head 14 completes the welding of the busbar through the welding hole on the material taking head 11.” The structure of this welding head cannot be adjusted, and it cannot complete the busbar welding task of different specifications of battery strings (battery strings with different grid lines or spacing). That is, if the size or arrangement of the battery string changes, this welding head cannot be used directly for welding.

[0007] Therefore, it is necessary to provide a new type of busbar welding device. Summary of the Invention

[0008] The purpose of this invention is to provide a busbar electromagnetic welding device to solve the problems mentioned in the background art.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical measures: a busbar electromagnetic welding device, characterized in that: it includes a horizontal moving part and an electromagnetic welding part, the horizontal moving part includes a motor slide module, the electromagnetic welding part is fixedly connected to the support plate on the motor slide module, the electromagnetic welding part includes a welding lifting cylinder, a welding base plate is fixedly connected to the front end of the welding lifting cylinder, the welding base plate is provided with at least two rows of threaded holes, a position adjustment block is fixedly connected to the threaded holes, and an electromagnetic welding assembly is fixedly connected to the position adjustment block; the electromagnetic welding assembly includes an electromagnetic welding shell, a heat dissipation groove is provided on one side of the electromagnetic welding shell, a dovetail groove is provided on the other side of the electromagnetic welding shell, an inner cavity for placing the welding core is provided inside the electromagnetic welding shell, the welding core includes a pressure welding head for pressing the busbar, the welding core includes a magnetic core body, and an electromagnetic coil is provided on the outer ring of the magnetic core body.

[0010] Compared with existing technologies, the advantages of this invention are: the welding position can be precisely controlled by the horizontal moving part of the equipment. By fixing the position adjustment block to the threaded holes at different positions on the welding base plate, different fixed positions of the electromagnetic welding assembly can be achieved, thereby enabling the welding of battery strings of different sizes and specifications.

[0011] As an improvement of this utility model, a ceramic sheet is provided on the bottom surface of the electromagnetic welding assembly. The purpose of this design is to isolate the battery string from the electromagnetic welding assembly and prevent heat from being transferred to the interior of the electromagnetic welding assembly.

[0012] As an improvement of this utility model, the bottom surface of the electromagnetic welding shell is provided with a long groove, and the ceramic sheet is provided with a protrusion that matches the long groove. The purpose of this design is to allow the protrusion of the ceramic sheet to be inserted into the long groove on the bottom surface of the electromagnetic welding shell, thereby fixing the ceramic sheet in place.

[0013] As an improvement to this utility model, the structure of the motor slide module adopts a synchronous belt drive mode. The purpose of choosing this design is that synchronous belt drives have low noise, high speed, and low cost, but their accuracy is not as good as that of ball screw drives.

[0014] As an improvement to this utility model, the structure of the motor slide module adopts a ball screw drive mode. The purpose of choosing this design is that ball screw drives have high positioning accuracy, low friction, high rigidity, and strong load capacity, but the cost is relatively high.

[0015] As an improvement of this utility model, the position adjustment block is provided with a wedge-shaped sliding groove that cooperates and is fixed with the dovetail groove. The purpose of this design is to allow the electromagnetic welding assembly with the dovetail groove to be easily inserted into the position adjustment block, achieving rapid positioning. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0017] In the attached diagram:

[0018] Figure 1 This is a three-dimensional schematic diagram of the busbar electromagnetic welding device described in this utility model. Figure 1 .

[0019] Figure 2 This is a three-dimensional schematic diagram of the busbar electromagnetic welding device described in this utility model. Figure 2 .

[0020] Figure 3 This is a three-dimensional schematic diagram of the electromagnetic welding assembly described in this utility model.

[0021] Figure 4 This is a three-dimensional schematic diagram of the welding core described in this utility model.

[0022] Figure 5 This is a three-dimensional schematic diagram of the electromagnetic welding assembly described in this utility model on the welding base plate.

[0023] Figure 6 This is a schematic diagram showing the position of the busbar electromagnetic welding device described in this utility model in the conveying platform.

[0024] Figure 7This is a three-dimensional schematic diagram of the welding core of Embodiment 2 of this utility model.

[0025] Figure 8 This is a three-dimensional schematic diagram of the position adjustment block described in this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Horizontal moving part; 2. Electromagnetic welding part; 3. Support plate; 4. Welding lifting cylinder; 5. Welding base plate; 6. Threaded hole; 7. Position adjusting block; 8. Electromagnetic welding assembly; 9. Electromagnetic welding housing; 10. Heat dissipation groove; 11. Dovetail groove; 12. Guide rail; 13. Inner cavity; 14. Pressure welding head; 15. Magnetic core; 16. Electromagnetic coil; 17. Ceramic sheet; 18. Long groove; 19. Protrusion; 20. Wedge-shaped slide; 21. Stroke buffer device; 22. Motor; 23. Lead screw sleeve; 24. Slider; 25. Dust cover; 26. Mounting hole; 27. Fixture; 28. Battery string; 29. ​​Conveying platform; 30. Stepped hole; 31. Busbar. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] Example 1

[0029] Please refer to Figure 1 -8.

[0030] This embodiment provides a busbar electromagnetic welding device, which includes a horizontal moving part 1 and an electromagnetic welding part 2.

[0031] In the embodiments of this utility model application, such as Figure 1 and Figure 2 As shown. The horizontal moving part 1 includes a motor slide module, and the electromagnetic welding part 2 is fixedly connected to the support plate 3 on the motor slide module. In this embodiment, the structure of the motor slide module adopts a ball screw drive mode. The working principle is that when the motor 22 drives the ball screw to rotate, the threaded engagement between the screw and the nut inside the screw sleeve 23 causes the slider 24 mounted on the screw sleeve 23 to move linearly along the axis of the screw. The guide rail 12 and the slider 24 provide support and guidance, converting the rotational motion of the ball screw into the linear motion of the slider 24. Since the principle of the ball screw drive mode is existing technology, it will not be described in detail here.

[0032] As an improvement, the motor-driven slide module can also adopt a synchronous belt design. It mainly consists of a motor 22, a reducer, a synchronous belt, a slide guide rail 12, a slider 24, and a coupling. The motor 22 is the drive unit; after being reduced in speed by the reducer, it drives the synchronous belt to rotate, thereby causing the slide to move linearly. The synchronous belt acts as a transmission element, converting the rotational motion of the motor 22 into the linear motion of the slide. The slide guide rail 12 and the slider 24 provide support and guidance, ensuring the stability and accuracy of the slide during linear motion.

[0033] Furthermore, a dust cover 25 is provided on the motor slide module to prevent dust and debris from entering the gaps between moving parts and extend service life.

[0034] Furthermore, the electromagnetic welding unit 2 includes a welding lifting cylinder 4, which is vertically installed. A welding base plate 5 is fixedly connected to the front end of the welding lifting cylinder 4. (Please refer to...) Figure 5 In this embodiment, the welding base plate 5 is provided with 6 rows of threaded holes 6. These threaded holes 6 are used to fix and connect position adjustment blocks 7. Each row has two holes, one at the top and one at the bottom, which can accommodate one set of position adjustment blocks 7. In this embodiment, two sets of electromagnetic welding assemblies 8 are installed (at the edges closest to both sides), but only one set of electromagnetic welding assemblies 8 can also be installed. By changing the threaded holes 6 at different positions, the position adjustment blocks 7 can be positioned differently, thus ultimately allowing the electromagnetic welding assemblies 8 to be installed in different locations. This can be flexibly combined according to the arrangement of the battery string 28, as the position adjustment blocks 7 are used to fix and connect the electromagnetic welding assemblies 8. Specifically, they are fixedly connected to the position adjustment blocks 7 by connecting to the four mounting holes 26 on the electromagnetic welding assembly 8.

[0035] Furthermore, the welding base plate 5 is mounted on two guide rails 12 on its bottom surface, enabling it to move up and down.

[0036] Furthermore, when the welding base plate 5 is reset, a stroke buffer device 21 is provided to achieve vibration reduction and noise reduction.

[0037] In the embodiments of this utility model application, such as Figure 3 As shown. The electromagnetic welding assembly 8 includes an electromagnetic welding housing 9. A heat dissipation groove 10 is provided on one side of the electromagnetic welding housing 9. The groove is curved, which increases the surface heat dissipation area and achieves a heat dissipation effect. A dovetail groove 11 is provided on the other side of the electromagnetic welding housing 9. An inner cavity 13 for placing the welding core is provided inside the electromagnetic welding housing 9.

[0038] In the embodiments of this utility model application, such as Figure 4As shown. The welding core includes a pressure welding head 14 for pressing the busbar, and the welding core includes a magnetic core body 15. An electromagnetic coil 16 is arranged on the outer ring of the magnetic core body 15, wherein the magnetic core body 15 and the electromagnetic coil 16 are an integral design.

[0039] In the embodiments of this utility model application, such as Figure 5 As shown. A ceramic sheet 17 is provided on the bottom surface of the electromagnetic welding assembly 8. The ceramic sheet 17 isolates the battery string 28 from the electromagnetic welding assembly 8, preventing heat from being transferred to the interior of the electromagnetic welding assembly 8.

[0040] In the embodiments of this utility model application, such as Figure 5 As shown, the bottom surface of the electromagnetic welding housing 9 is provided with a long groove 18, and the ceramic sheet 17 is provided with a protrusion 19 that matches the long groove 18. This structure allows the protrusion 19 of the ceramic sheet 17 to be inserted into the long groove 18 on the bottom surface of the electromagnetic welding housing 9, thus fixing the ceramic sheet 17 in place.

[0041] In the embodiments of this utility model application, such as Figure 8 As shown, the position adjustment block 7 is provided with a wedge-shaped sliding groove 20 that cooperates with and is fixed to the dovetail groove 11. This structure allows the electromagnetic welding assembly 8 with the dovetail groove 11 to be easily inserted into the position adjustment block 7, achieving rapid positioning.

[0042] Furthermore, the position adjustment block 7 is provided with a stepped hole 30, which is used to install bolts without causing the bolt head to protrude, thus improving the aesthetics.

[0043] Example 2

[0044] like Figure 7 As shown, with other structures remaining unchanged, the welding core includes a magnetic core 15, and an electromagnetic coil 16 is arranged on the outer ring of the magnetic core 15. The magnetic core 15 and the electromagnetic coil 16 are both designed separately, that is, each welding head 14 corresponds to a set of magnetic core 15 and electromagnetic coil 16. Compared with the integrated design structure in Embodiment 1, it can maintain better consistency in the welding effect of each welding head 14.

[0045] This embodiment provides a busbar electromagnetic welding device, such as... Figure 6As shown, during operation, the clamp 27, containing the battery string 28 and busbar 31, is moved from the conveyor platform 29. Upon reaching the welding position, the clamp 27 stops at the stop block. The electromagnetic welding assembly 8 is pressed down by the welding lifting cylinder 4. The high-frequency electromagnetic field causes the metal molecules in the busbar to rub against each other at high speed, generating heat. When the busbar 31 is heated to a certain temperature, it melts and connects to the battery string 28, achieving automatic welding. The principle of electromagnetic induction welding is based on electromagnetic induction. A high-frequency current generates an alternating magnetic field in the induction coil. When a metal material is placed in this magnetic field, eddy currents are generated inside the metal. These eddy currents convert electrical energy into heat energy under the resistance of the metal, thus rapidly heating the metal to the temperature required for welding, achieving welding. Since the principle of electromagnetic induction welding is existing technology, it will not be elaborated upon here.

[0046] The beneficial effects of this utility model are as follows: the motor 22 of the horizontal moving part 1 of the busbar electromagnetic welding device can precisely control the welding position. By fixing the position adjusting block 7 to the threaded holes 6 at different positions on the welding base plate 5, different fixed positions of the electromagnetic welding assembly 8 can be achieved, thereby enabling the welding of battery strings 28 of different sizes and specifications.

[0047] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A busbar electromagnetic welding device, characterized in that: The assembly includes a horizontal moving part (1) and an electromagnetic welding part (2). The horizontal moving part (1) includes a motor slide module, and the electromagnetic welding part (2) is fixedly connected to the motor slide module via a support plate (3). The electromagnetic welding part (2) includes a welding lifting cylinder (4), and a welding base plate (5) is fixedly connected to the front end of the welding lifting cylinder (4). The welding base plate (5) is provided with at least two rows of threaded holes (6), and a position adjusting block (7) is fixedly connected to the threaded holes (6). The position adjusting block (7) is fixedly connected to... There is an electromagnetic welding assembly (8); the electromagnetic welding assembly (8) includes an electromagnetic welding housing (9), a heat dissipation groove (10) is provided on one side of the electromagnetic welding housing (9), a dovetail groove (11) is provided on the other side of the electromagnetic welding housing (9), an inner cavity (13) for placing the welding core is provided inside the electromagnetic welding housing (9), the welding core includes a pressure welding head (14) for pressing the busbar, the welding core includes a magnetic core body (15), and an electromagnetic coil (16) is provided on the outer ring of the magnetic core body (15).

2. The busbar electromagnetic welding device according to claim 1, characterized in that: The bottom surface of the electromagnetic welding assembly (8) is provided with a ceramic sheet (17).

3. The busbar electromagnetic welding device according to claim 2, characterized in that: The bottom surface of the electromagnetic welding housing (9) is provided with a long groove (18), and the ceramic sheet (17) is provided with a protrusion (19) that matches the long groove (18).

4. The busbar electromagnetic welding device according to claim 1, characterized in that: The structure of the motor slide module adopts a synchronous belt drive mode.

5. The busbar electromagnetic welding device according to claim 1, characterized in that: The structure of the motor slide module adopts a ball screw drive mode.

6. The busbar electromagnetic welding device according to claim 1, characterized in that: The position adjustment block (7) is provided with a wedge-shaped slide groove (20) that is fixed in conjunction with the dovetail groove (11).

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