A flexible lifting mechanism for sealing the sealing tab of a battery

Abstract

The utility model relates to the technical field of cylindrical battery welding, specifically relates to a flexible lifting mechanism for sealing and welding battery sealing sheet. The utility model provides a flexible lifting mechanism for sealing and welding battery sealing sheet, including clamping assembly, and clamping assembly includes a plurality of clamping units, and clamping unit is provided with clamping block and clamping plate, and clamping block and clamping plate are close to each other to hold battery, and lifting assembly includes lifting head and lifting base, and the lifting base is provided with the limiting slot of adapting with the lifting head, and the lifting spring is arranged between the lifting head and the bottom wall of limiting slot, and the pressure head assembly includes the pressure head cover plate, and the pressure head cover plate is provided with the welding hole of being opposite to the sealing and welding station, and the pressure head cover plate is connected with the pressure head drive arrangement that can drive it reciprocating movement along the axial direction of battery. The utility model can adapt to different specifications of battery, provide flexible support and accurate positioning, and can buffer welding vibration.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical battery welding technology, specifically to a flexible support mechanism for sealing and welding battery sealing sheets. Background Technology

[0002] In the battery manufacturing process, welding the battery sealing sheet is a crucial step in ensuring the battery's sealing performance and safety. The sealing sheet must be tightly welded to the battery casing. If the welding process is unstable or the positioning is off, it can easily lead to uneven welds, incomplete welds, or missed welds, directly affecting the battery's sealing performance and even causing safety hazards such as battery leakage and short circuits.

[0003] Currently, battery sealing sheet welding mostly uses fixed or manually adjustable lifting mechanisms. Fixed lifting mechanisms have a fixed lifting height and support surface, which can only be adapted to a single battery specification. When producing batteries of different sizes and thicknesses, the entire lifting assembly needs to be replaced, which is not only cumbersome and time-consuming to change, but also increases equipment costs and production downtime, making it difficult to meet diverse production needs.

[0004] While manually adjustable lifting mechanisms allow for changes in lifting height by manually turning adjustment screws, their adjustment precision is low, and it's difficult to ensure consistent height across multiple support points. This can lead to uneven stress on the battery or sealing plate during welding, resulting in micro-deformation. Furthermore, the support surfaces of traditional lifting mechanisms are often rigid structures, lacking cushioning when in contact with the battery or sealing plate. This can cause damage to the battery casing or sealing plate due to excessive contact stress.

[0005] Meanwhile, the welding process generates heat and vibration. Existing lifting mechanisms lack effective flexible buffer design, and vibration is easily transmitted to the battery or sealing plate, causing the welding position to shift. Heat conduction may cause thermal deformation of the lifting mechanism, further reducing lifting stability and affecting the consistency of welding quality.

[0006] Meanwhile, the welding process generates heat and vibration. The vibration of the existing lifting mechanism is easily transmitted to the battery or sealing plate, causing the welding position to shift. Heat conduction may cause thermal deformation of the lifting mechanism, further reducing lifting stability and affecting the consistency of welding quality. Utility Model Content

[0007] To address the technical problems of existing technologies lacking effective flexible buffering designs, which easily transmit vibrations to the battery or sealing sheet, causing welding position displacement and affecting the consistency of welding quality, this utility model provides a flexible support mechanism for sealing welding battery sealing sheets. It can adapt to batteries of different specifications, provide flexible support and precise positioning, and buffer welding vibrations.

[0008] This utility model provides a flexible lifting mechanism for sealing and welding battery sealing sheets, comprising: a clamping assembly, which includes several clamping units, each clamping unit having a clamping block and a clamping plate arranged opposite each other, the battery being disposed between the clamping blocks and the clamping plates, the clamping blocks and the clamping plates being close to each other to clamp the battery; a lifting assembly, which is disposed at the lower part of the clamping assembly, the lifting assembly including a lifting head and a lifting base, the lifting head having a positioning groove, the lifting base having a limiting groove adapted to the lifting head, the lifting head being disposed in the limiting groove and being able to slide up and down in the limiting groove, a lifting spring being disposed between the lifting head and the bottom wall of the limiting groove; and a pressure head assembly, which includes a pressure head cover plate, the pressure head cover plate having a welding hole facing the sealing and welding station, the pressure head cover plate being connected to a pressure head driving device capable of driving it to reciprocate along the axial direction of the battery.

[0009] Furthermore, a first guide rod is connected to the side of the clamping block facing the clamping plate, and the first guide rod passes through the clamping plate. A connecting plate is fixedly connected to the end of the first guide rod facing away from the clamping block. A second guide rod is fixedly connected to the end of the clamping plate facing away from the clamping block. A clamping spring is sleeved on the second guide rod. A through hole is opened in the connecting plate, and the end of the second guide rod facing away from the clamping plate passes through the through hole.

[0010] Furthermore, the clamping plate has a groove adapted to the shape of the battery on the side facing the clamping block.

[0011] Furthermore, the driving device includes a slide cylinder, which is fixed to a cylinder support frame and is fixedly connected to the pressure head cover plate to drive the pressure head cover plate to reciprocate.

[0012] Furthermore, triangular fixing brackets are fixedly installed on both sides of the cylinder support bracket.

[0013] Furthermore, there are two first guide rods and one second guide rod, with the second guide rod positioned between the two first guide rods.

[0014] Furthermore, the clamping assembly includes a moving frame, on which multiple clamping units are arranged in a horizontal or vertical array.

[0015] Furthermore, the clamping assembly includes a moving frame, which has two opposing clamping plates fixedly connected to the moving frame. Between the two opposing clamping plates are clamping blocks corresponding to the two clamping plates, and the two clamping blocks are symmetrically arranged.

[0016] Furthermore, multiple clamping plates are provided, and the multiple clamping plates are arranged in parallel along the vertical direction.

[0017] Furthermore, the clamping assembly includes a moving frame, the moving frame being provided with a lifting base plate, and the lifting base being fixed to the lifting base plate.

[0018] The beneficial effects of this utility model are as follows: 1. This utility model, through the design of flexible lifting and clamping components, can adapt to batteries and sealing sheets of different specifications and thicknesses, eliminating the need for frequent replacement of lifting fixtures, greatly shortening changeover time, improving equipment versatility and production efficiency, and adapting to various battery production scenarios.

[0019] 2. Under the same pressure head height, the spring-loaded lifting head can automatically compensate for the height difference according to the battery's different heights, ensuring the stability of the battery during lifting and welding. This effectively avoids problems such as uneven welds, incomplete welds, and missed welds caused by positioning deviations and vibrations, thus improving the quality of battery sealing welding. During welding, the spring-loaded lifting head can effectively absorb vibrations and impacts, reducing the impact on welding accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of one embodiment of the clamping component of this utility model; Figure 3 This is a schematic diagram of the structure of one embodiment of the lifting component of this utility model; Figure 4 This is a structural schematic diagram of one embodiment of the pressure head assembly of this utility model.

[0022] Key reference numerals in the attached drawings: 1-Pressure head cover plate; 2-Clamping assembly; 21-Clamping block; 22-First guide rod; 23-Connecting plate; 24-Second guide rod; 25-Clamping spring; 26-Nut; 3-Cylinder support frame; 4-Slide cylinder; 5-Hex socket head cap screw; 6-Lifting assembly; 61-Lifting head; 62-Lifting spring; 63-Lifting base; 7-Moving element frame; 8-Lifting base plate. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0024] This utility model provides a flexible support mechanism for sealing welded battery sealing sheets, including a clamping assembly 2. The clamping assembly 2 includes several clamping units, each clamping unit having a clamping block 21 and a clamping plate arranged opposite each other. The battery is disposed between the clamping block 21 and the clamping plate, with the clamping block 21 and the clamping plate facing each other to clamp the battery. A first guide rod 22 is connected to the side of the clamping block 21 facing the clamping plate and passes through the clamping plate. A connecting plate 23 is fixedly connected to the end of the first guide rod 22 facing away from the clamping block 21. A second guide rod 24 is fixedly connected to the end of the clamping plate facing away from the clamping block 21. A clamping spring 25 is sleeved on the second guide rod 24. The connecting plate 23 has a through hole, through which the end of the second guide rod 24 facing away from the clamping plate passes. There are two first guide rods 22 and one second guide rod 24. The second guide rod 24 is positioned between the two first guide rods 22. Both ends of the first guide rod 22 have threads that are fastened to the clamping block 21 and the connecting plate 23 respectively via nuts 26. The clamping assembly 2 includes a moving frame 7 with two opposing clamping plates fixedly connected to it. Clamping blocks 21, corresponding to the two clamping plates, are positioned between them. The two clamping blocks 21 are symmetrically arranged, and the batteries are relatively concentrated in the working position for easy welding. The moving frame 7 has multiple clamping units arranged in a horizontal or vertical array for batch clamping of batteries for welding. The clamping plates have grooves adapted to the shape of the batteries on the side facing the clamping blocks 21. The clamping blocks 21 have through holes. Multiple clamping plates are arranged parallel to each other in the vertical direction to improve the stability of the clamping action on the batteries. The battery is placed between the clamping block 21 and the clamping plate. The position of the clamping block 21 is moved to adapt to the size of the battery. The clamping block 21 drives the first guide rod 22 and the connecting plate 23 to move. The connecting plate 23 compresses the clamping spring 25 that is sleeved on the second guide rod 24. The clamping spring 25 generates elastic force, which generates a clamping force on the battery between the clamping block 21 and the clamping plate, thereby flexibly adapting it.

[0025] The lifting assembly 6 is located below the clamping assembly 2. The lifting assembly 6 includes a lifting head 61 and a lifting base 63. The lifting head 61 has a positioning groove in which the battery is placed, and the positioning groove limits the battery's position. The lifting base 63 has a limiting groove adapted to the lifting head 61. The lifting head 61 is positioned within the limiting groove and can slide up and down within it. Multiple lifting springs 62 are arranged between the lifting head 61 and the bottom wall of the limiting groove. One end of each lifting spring 62 is fixed in the limiting groove, and the other end is fixed to the lower part of the lifting head 61. The clamping assembly 2 includes a moving frame 7, which has a lifting base plate 8. The lifting base 63 is fixed to the lifting base plate 8.

[0026] The pressure head assembly includes a pressure head cover plate 1. The pressure head cover plate 1 has four openings in the middle to fix the battery and sealing sheet. These four openings are aligned with the sealing welding station. Before welding begins, the pressure head cover plate 1 is pressed down to a fixed height by the sliding cylinder 4. The lifting head 61 automatically compensates for battery height errors. During welding, the lifting head 61 effectively absorbs vibration and impact forces, reducing the impact on welding accuracy. The pressure head cover plate 1 is connected to a pressure head drive device that drives it to reciprocate along the battery axial direction. The drive device includes a sliding cylinder 4, which is fixed to a cylinder support frame 3. The sliding cylinder 4 is fixedly connected to the pressure head cover plate 1 to drive its reciprocating movement. The slide cylinder 4 is connected to the cylinder support frame 3 via a threaded rod. There are three slide cylinders 4 and three cylinder support frames 3. The end plate of the slide cylinder 4 has three threaded holes. The pressure head cover plate 1 is connected to the end plate of the slide cylinder 4 via hex bolts 5. The slide cylinder 4 drives the pressure head cover plate 1 to press down towards the mover frame 7. The height of the pressure head cover plate 1 and the mover assembly is adapted to various battery specifications. Triangular fixing brackets are fixedly installed on both sides of the cylinder support frame 3, which can be used to install and fix the entire device.

[0027] All electrical devices in this plan are powered by an external power source.

[0028] Working Principle: During use, when the battery and sealing sheet to be welded are placed in the clamping unit, the clamping block 21 and clamping plate initially position the workpiece. Workpieces of different thicknesses and specifications cause the spring to compress or stretch to different degrees, achieving flexible adaptation. Under the same pressing height of the pressure head cover 1, the flexible lifting unit can automatically compensate for the height according to the different heights of the battery, allowing the workpiece to be lifted stably. During the welding process, the lifting head 61 can effectively absorb the vibration and impact force during the welding process, reducing the impact on welding accuracy. The moving frame 7, with its high-precision mounting holes and positioning grooves, ensures the relative position stability of each component. Together with the fastening connecting components, it makes the entire device structurally stable during operation and welding, providing a precise and stable lifting and positioning environment for battery sealing sheet welding.

[0029] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention.

Claims

1. A flexible support mechanism for sealing welded battery sealing sheets, characterized in that, include: The clamping assembly includes several clamping units. Each clamping unit is provided with a clamping block and a clamping plate arranged opposite each other. The battery is disposed between the clamping block and the clamping plate, and the clamping block and the clamping plate move closer to each other to clamp the battery. The lifting assembly is located at the lower part of the clamping assembly. The lifting assembly includes a lifting head and a lifting base. The lifting head has a positioning groove, and the lifting base has a limiting groove that is adapted to the lifting head. The lifting head is set in the limiting groove and can slide up and down in the limiting groove. A lifting spring is provided between the lifting head and the bottom wall of the limiting groove. The pressure head assembly includes a pressure head cover plate with a welding hole facing the sealing welding station. The pressure head cover plate is connected to a pressure head drive device that can drive it to reciprocate along the axial direction of the battery.

2. The flexible support mechanism for sealing welded battery sealing sheets as described in claim 1, characterized in that, A first guide rod is connected to the side of the clamping block facing the clamping plate and the first guide rod passes through the clamping plate. A connecting plate is fixedly connected to the end of the first guide rod facing away from the clamping block. A second guide rod is fixedly connected to the end of the clamping plate facing away from the clamping block. A clamping spring is sleeved on the second guide rod. A through hole is opened on the connecting plate, and the end of the second guide rod facing away from the clamping plate passes through the through hole.

3. The flexible support mechanism for sealing welded battery sealing sheets as described in claim 1, characterized in that, The clamping plate has a groove on the side facing the clamping block that is adapted to the shape of the battery.

4. The flexible support mechanism for sealing welded battery sealing sheets as described in claim 1, characterized in that, The driving device includes a slide cylinder, which is fixed to a cylinder support frame and is fixedly connected to the pressure head cover plate to drive the pressure head cover plate to reciprocate.

5. A flexible support mechanism for sealing welded battery sealing sheets as described in claim 4, characterized in that, Triangular brackets are fixedly installed on both sides of the cylinder support frame.

6. A flexible support mechanism for sealing welded battery sealing sheets as described in claim 2, characterized in that, There are two first guide rods and one second guide rod, with the second guide rod positioned between the two first guide rods.

7. A flexible support mechanism for sealing welded battery sealing sheets as described in claim 2, characterized in that, The clamping assembly includes a moving frame, on which multiple clamping units are arranged in a horizontal or vertical array.

8. A flexible support mechanism for sealing welded battery sealing sheets as described in claim 2, characterized in that, The clamping assembly includes a moving frame, which has two opposing clamping plates fixedly connected to the moving frame. Between the two opposing clamping plates are clamping blocks corresponding to the two clamping plates, and the two clamping blocks are symmetrically arranged.

9. A flexible support mechanism for sealing welded battery sealing sheets as described in claim 1, characterized in that, Multiple clamping plates are provided, and the multiple clamping plates are arranged in parallel along the vertical direction.

10. A flexible support mechanism for sealing welded battery sealing sheets as described in claim 1, characterized in that, The clamping assembly includes a moving frame, the moving frame is provided with a lifting base plate, and the lifting base is fixed to the lifting base plate.

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