A welding head structure capable of improving the welding strength of a tab

Abstract

The utility model discloses a welding head structure that can improve the welding strength of the tab, relates to the technical field of tab welding device, the utility model discloses a shell still includes: welding portion, the welding portion is installed on the shell, fixed portion, the fixed portion sets up on the shell, the welding portion includes telescopic subassembly, and the telescopic subassembly sets up on the shell, buffer assembly, the buffer assembly is installed on the shell, the telescopic subassembly includes the electric telescopic link of fixed connection in the inner wall of shell, and the output fixed connection of electric telescopic link has the triangular block, and the shell is slidably connected with the slide bar no.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrode welding device, and in particular relates to a welding head structure that can improve the welding strength of electrode. Background Technology

[0002] In the manufacturing of new energy batteries, the electrode tab is a core component that connects the internal current collector of the cell with the external circuit. Its welding quality directly determines the battery's charge and discharge performance, internal resistance stability and service life. As batteries develop towards high energy density and high charge and discharge rates, the electrode tab is gradually evolving towards "thinner and multi-layered". The traditional welding head structure is no longer able to meet the requirements.

[0003] However, in the existing welding head structure, when the welding head comes into contact with the electrode tab during use, the pressure will be applied directly to the electrode tab without buffering, which can easily lead to irreversible compression deformation, edge wrinkling, or even directly crushing of the electrode tab metal substrate. Utility Model Content

[0004] The purpose of this utility model is to provide a welding head structure that can improve the welding strength of the electrode tab. By setting up a welding part, the problem of the existing welding head structure being directly and without buffering pressure applied to the electrode tab when the welding head contacts the electrode tab during use is solved. This can easily lead to irreversible extrusion deformation, edge wrinkling, or even direct crushing of the electrode tab's metal substrate.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a welding head structure that can improve the welding strength of electrode tabs. It includes a housing and further includes: a welding part mounted on the housing; a fixing part disposed on the housing; the welding part includes a telescopic assembly disposed on the housing; and a buffer assembly mounted on the housing. The telescopic assembly includes an electric telescopic rod fixedly connected to the inner wall of the housing, with a triangular block fixedly connected to the output end of the electric telescopic rod. A sliding rod is slidably connected to the housing, extending outside the housing. A fixing block is fixedly connected to the top of the sliding rod, and a rotating component is provided on the fixing block. The triangular block is a right triangle, and the rotating component includes a downward pressure wheel rotatably connected to the fixing block, the downward pressure wheel contacting the triangular block.

[0007] Furthermore, the fixing part includes a limiting component disposed on the housing; and an adapter component mounted on the housing, with the limiting component extending into the housing.

[0008] Furthermore, the buffer assembly includes a fixing ring fixedly connected to the outer wall of the slide rod, a spring is sleeved on the outer wall of the slide rod, a welded part is provided on the outer shell, the top of the spring is fixedly connected to the fixing ring, the bottom of the spring is fixedly connected to the outer shell, the welded part includes an upper welded head fixedly connected to the bottom of the slide rod, and a lower welded head fixedly connected to the top of the outer shell, the upper welded head and the lower welded head are distributed opposite to each other.

[0009] Furthermore, the limiting component includes two limiting grooves formed on the outer shell, each of which is slidably connected to a slide rod II, and the outer walls of each of the two slide rod IIs are fixedly connected to a plurality of limiting blocks, which are adapted to the limiting grooves.

[0010] Furthermore, the adapter component includes two slide rods three fixedly connected to the top of the two slide rods two, pressure plates slidably connected to the outer walls of the two slide rods two, fixing plates fixedly connected to the top of the two slide rods three, springs two sleeved on the outer walls of the two slide rods three, the tops of the two springs two fixedly connected to the two fixing plates respectively, and the bottoms of the two springs two fixedly connected to the pressure plates. The initial state of the springs two is a state without pressure.

[0011] This utility model has the following beneficial effects:

[0012] 1. By setting up a welding section, using an electric telescopic rod as the power source, the force is transmitted through the inclined plane of the triangular block, driving the lower pressure wheel to rotate and causing the fixed block and slide rod to move downwards, simultaneously achieving precise approach and compression of the upper and lower welding heads; at the same time, spring one is compressed during the movement, forming an elastic buffer mechanism. The elastic buffer of spring one can alleviate the instantaneous impact force, prevent the electrode ear from being deformed or damaged due to rigid compression, or the welding head from being worn excessively, thus extending the service life of the equipment;

[0013] 2. By setting up a fixing part, the basic action is to insert the slide bar two into the limiting groove. The pressure plate on the slide bar three forms elastic contact with the spring two. During the insertion process, the pressure plate first flexibly contacts the electrode ear and generates a pre-tightening force through spring compression. After the pressure reaches a suitable state, the limiting block is locked into the limiting groove by rotating the slide bar two to complete the rigid locking. At the same time, the fixed height can be adjusted by using the limiting blocks at different positions on the slide bar two. By adjusting the fixed height by the limiting blocks at different positions on the slide bar two, it can flexibly cope with electrode ears of different thicknesses and widths without changing special fixtures, reducing equipment switching costs and improving the versatility of the production line.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the welded part of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the fixing part of this utility model;

[0019] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0020] Figure 5 This utility model Figure 3 A magnified structural diagram of B in the diagram;

[0021] Figure 6 This is a schematic diagram of the structure of the welding head of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 111. Outer shell; 2. Welding part; 21. Telescopic assembly; 211. Electric telescopic rod; 212. Triangular block; 213. Slide rod one; 214. Fixing block; 215. Lower pressure roller; 22. Buffer assembly; 221. Fixing ring; 222. Spring one; 223. Upper welding head; 224. Lower welding head; 3. Fixing part; 31. Limiting assembly; 311. Limiting groove; 312. Slide rod two; 313. Limiting block; 32. Adaptor assembly; 321. Slide rod three; 322. Pressure plate; 323. Fixing plate; 324. Spring two. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6As shown, this utility model is a welding head structure that can improve the welding strength of the electrode tab, including a shell 111, and further including: a welding part 2, which is installed on the shell 111; and a fixing part 3, which is disposed on the shell 111.

[0026] Welding part 2 includes a telescopic assembly 21, which is mounted on the outer shell 111; and a buffer assembly 22, which is also mounted on the outer shell 111. The telescopic assembly 21 includes an electric telescopic rod 211 fixedly connected to the inner wall of the outer shell 111. A triangular block 212 is fixedly connected to the output end of the electric telescopic rod 211. A sliding rod 213 is slidably connected to the outer shell 111, extending to the outside of the outer shell 111. A fixing block 214 is fixedly connected to the top of the sliding rod 213. A rotating component is provided on the fixing block 214. The triangular block 212 is a right triangle. The rotating component includes a downward pressure wheel 215 rotatably connected to the fixing block 214. The downward pressure wheel 215 contacts the triangular block 212, providing a buffer. The punch assembly 22 includes a fixing ring 221 fixedly connected to the outer wall of the slide rod 213. A spring 222 is sleeved on the outer wall of the slide rod 213. A welded part is provided on the outer shell 111. The top of the spring 222 is fixedly connected to the fixing ring 221, and the bottom of the spring 222 is fixedly connected to the outer shell 111. The welded part includes an upper weld head 223 fixedly connected to the bottom of the slide rod 213, and a lower weld head 224 fixedly connected to the top of the outer shell 111. The upper weld head 223 and the lower weld head 224 are distributed opposite to each other. By setting the welded part 2, the elastic buffer of the spring 222 can alleviate the instantaneous impact force, prevent the electrode ear from being deformed or damaged due to rigid extrusion, or the weld head from being worn excessively, and extend the service life of the equipment.

[0027] The fixing part 3 includes a limiting component 31, which is disposed on the outer shell 111; and an adapter component 32, which is mounted on the outer shell 111. The limiting component 31 extends into the outer shell 111 and includes two limiting grooves 311 formed on the outer shell 111. A slide rod 312 is slidably connected in each of the two limiting grooves 311. A plurality of limiting blocks 313 are fixedly connected to the outer walls of the two slide rods 312. The limiting blocks 313 are adapted to the limiting grooves 311. The adapter component 32 includes two slide rods 321 respectively fixedly connected to the top of the two slide rods 312. The outer wall is slidably connected to a pressure plate 322. The tops of the two slide rods 321 are fixedly connected to a fixing plate 323. The outer walls of the two slide rods 321 are fitted with springs 324. The tops of the two springs 324 are fixedly connected to the two fixing plates 323 respectively. The bottoms of the two springs 324 are fixedly connected to the pressure plate 322. The initial state of the springs 324 is a pressureless state. By setting the fixing part 3, the fixing height can be adjusted by the limiting blocks at different positions on the slide rods 312. It can flexibly cope with the tabs of different thicknesses and widths without the need to replace special fixtures, reduce equipment switching costs, and improve the versatility of the production line.

[0028] It should be noted that the control of the electric telescopic pole 211 in this application can be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0029] A specific application of this embodiment is as follows: In use, the electrode tabs to be welded are first arranged and placed on the lower welding head 224, and then fixed by the fixing part 3. During fixing, the slide rod 312 is inserted into the limiting groove 311. As the pressure plate 322 on the slide rod 321 is inserted, it first contacts the electrode tab. With continued downward pressure, the pressure plate 322 compresses the spring 324. After a certain compression, the slide rod 312 is rotated. At this time, the corresponding limiting block 313 on the slide rod 312 will engage in the limiting groove 311, thereby achieving the effect of fixing the electrode tab. Furthermore, the limiting blocks 313 at different positions on the slide rod 312 can accommodate electrode tabs of different sizes. After fixing is completed... When the electric telescopic rod 211 is activated, it will push the triangular block 212. The triangular block 212 will then push the pressure roller 215 to make the fixed block 214 and the slide rod 213 slide downward. When the pressure roller 215 is pushed, it will rotate on the fixed block 214. As the fixed block 214, the slide rod 213 and the fixed ring 221 move downward, they will compress the spring 222. At the same time, the slide rod 213 will also bring the upper welding head 223 closer to the lower welding head 224. After the upper welding head 223 and the lower welding head 224 are compressed, the tab will be welded, thus achieving the effect of welding the tab.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A welding head structure for improving the welding strength of electrode tabs, comprising a shell (111), characterized in that, Also includes: Welding part (2), said welding part (2) is mounted on the outer casing (111); A fixing part (3) is provided on the outer casing (111); The welded part (2) includes a telescopic assembly (21) disposed on the outer casing (111); and A buffer assembly (22) is mounted on the housing (111); The telescopic assembly (21) includes an electric telescopic rod (211) fixedly connected to the inner wall of the outer shell (111). A triangular block (212) is fixedly connected to the output end of the electric telescopic rod (211). A slide rod (213) is slidably connected to the outer shell (111). The slide rod (213) extends to the outside of the outer shell (111). A fixing block (214) is fixedly connected to the top of the slide rod (213). A rotating component is provided on the fixing block (214). Among them, the triangular block (212) is a right triangle.

2. The welding head structure for improving electrode tab welding strength according to claim 1, characterized in that, The fixing part (3) includes a limiting component (31), which is disposed on the outer casing (111); and An adapter component (32) is mounted on the housing (111); The limiting component (31) extends into the housing (111).

3. The welding head structure for improving electrode tab welding strength according to claim 2, characterized in that, The buffer assembly (22) includes a fixing ring (221) fixedly connected to the outer wall of the slide rod (213), a spring (222) is sleeved on the outer wall of the slide rod (213), and a welded part is provided on the outer shell (111); The top of spring 1 (222) is fixedly connected to the fixing ring (221), and the bottom of spring 1 (222) is fixedly connected to the outer shell (111).

4. A welding head structure for improving electrode tab welding strength according to claim 3, characterized in that, The limiting component (31) includes two limiting grooves (311) opened on the outer shell (111), and two sliding rods (312) are slidably connected in the two limiting grooves (311). Several limiting blocks (313) are fixedly connected to the outer walls of the two sliding rods (312). The limiting block (313) is adapted to the limiting groove (311).

5. A welding head structure for improving electrode tab welding strength according to claim 4, characterized in that, The adapter component (32) includes two slide rods (321) fixedly connected to the top of two slide rods (312), a pressure plate (322) slidably connected to the outer wall of the two slide rods (312), a fixing plate (323) fixedly connected to the top of each of the two slide rods (321), a spring (324) sleeved on the outer wall of each of the two slide rods (321), the top of each spring (324) fixedly connected to the two fixing plates (323), and the bottom of each spring (324) fixedly connected to the pressure plate (322). Among them, the initial state of spring 2 (324) is a state without pressure.

6. A welding head structure for improving electrode tab welding strength according to claim 5, characterized in that, The rotating component includes a pressure wheel (215) rotatably connected to the fixed block (214); The pressure roller (215) is in contact with the triangular block (212).

7. A welding head structure for improving electrode tab welding strength according to claim 6, characterized in that, The welded component includes an upper weld head (223) fixedly connected to the bottom of the slide bar (213), and a lower weld head (224) fixedly connected to the top of the outer shell (111); The upper welding head (223) and the lower welding head (224) are distributed relative to each other.

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