Battery cell tab bending mechanism

Abstract

The cell tab bending mechanism of the application comprises a supporting seat, a top supporting assembly, a clamping assembly and a bending assembly. The top supporting assembly comprises a top supporting driving element and a top supporting block. The top supporting driving element is used to drive the top supporting block to be close to the cell so that the top supporting block is located between the bottom sheet and the cell. The clamping assembly comprises a clamping driving element and two clamping elements. The clamping driving element is used to drive the two clamping elements to clamp the two ends of the bottom sheet respectively. The clamping element comprises two clamping blocks. A guide groove is formed on the clamping block. When the clamping block is close to the bottom sheet, at least part of the structure of the bottom sheet is located in the guide groove. The bending assembly comprises two bending driving elements and two roller shafts. The two bending driving elements are used to drive the two roller shafts to be close to each other so that the two roller shafts roll the two welding sheets respectively, and the two welding sheets are adhered to the bottom sheet. By clamping and fixing the two ends of the bottom sheet by the two clamping elements, the current collecting sheet is limited in the specified position, and the two roller shafts can reliably bend the welding sheet and the tab.

Description

Technical Field

[0001] This invention relates to the field of battery cell processing, and in particular to a battery cell tab bending mechanism. Background Technology

[0002] Lithium batteries can be broadly classified into prismatic batteries, cylindrical batteries, and pouch batteries according to their shape. Cylindrical batteries and pouch batteries usually contain only one cell, while prismatic batteries typically use current collectors to connect the tabs of multiple cells in parallel or series to form a cell pack. Then, uniform positive and negative electrodes are externally mounted on the prismatic battery.

[0003] To facilitate the welding of the cell tabs to the current collector, the current collector is usually designed with a bent structure. Only after welding is completed are the current collector and the tabs bent together, allowing the cell assembly to be smoothly installed inside the battery casing. For example... Figure 1 The diagram shows a current collector 20, which includes a base plate 21 and two welding tabs 22. The two welding tabs 22 are bent and disposed on both sides of the base plate 21. The current collector 20 is fixed on the battery cover 30. After the tabs of the battery cell 40 are welded to the welding tabs 22, the welding tabs 22 are bent so that the welding tabs 22 are attached to the base plate 21. Then, the battery cell assembly together with the bent current collector 20 is installed into the battery case.

[0004] As prismatic battery technology matures and its manufacturing process becomes more stable, more and more manufacturers are developing automated equipment to assist in the production of prismatic batteries. However, because one end of the current collector 20 is fixedly connected to the battery cover 30 while the other end is free, there is a difference in the spacing between the base plate 21 and the cell 40. When bending the welding tab 22, the base plate 21 needs to be fixed. Due to the uncertainty in the relative position between the base plate 21 and the cell 40, the base plate 21 cannot be effectively fixed, resulting in the welding tab 22 and the cell tab not being reliably bent. Therefore, to solve the above technical problems, the cell tab bending mechanism of this application is proposed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery tab bending mechanism that can reliably bend the current collector and the battery tab.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A battery cell tab bending mechanism, applied on a battery cell conveying line, includes:

[0008] Support base;

[0009] A top support assembly, comprising a top support drive and a top support block, wherein the top support drive is disposed on the support base and the top support block is disposed on the output shaft of the top support drive, and the top support drive is used to drive the top support block closer to the battery cell so that the top support block is located between the substrate and the battery cell;

[0010] A positioning assembly includes a positioning drive and two clamping components. The positioning drive is mounted on a support base, and the two clamping components are both mounted on the positioning drive. The positioning drive is used to drive the two clamping components to clamp the two ends of a substrate. Each clamping component includes two clamping blocks, both mounted on the positioning drive. The positioning drive is used to drive the two clamping blocks to move closer together so that they jointly clamp the substrate. Each clamping block has a guide groove, and when the clamping block moves closer to the substrate, at least a portion of the substrate structure is located within the guide groove.

[0011] A bending assembly includes two bending drive components and two rollers. The two bending drive components are both mounted on the support base, and the two rollers are rotatably mounted on the two bending drive components. When the two bending drive components drive the two rollers to move closer to each other, the two rollers respectively roll and press the two welding sheets, so that the two welding sheets are attached to the base plate.

[0012] In one embodiment, the positioning drive includes a sliding cylinder and two grippers. The sliding cylinder is mounted on the support base, and the two grippers are mounted on the sliding cylinder. The sliding cylinder is used to drive the two grippers closer to or further away from the substrate. The two clamping components are respectively mounted on the output shafts of the two grippers.

[0013] In one embodiment, the positioning drive further includes a base plate and two adjusting blocks. The base plate is disposed on the output shaft of the sliding cylinder, and the two adjusting blocks are respectively adjustablely disposed on the base plate. The two pneumatic grippers are respectively disposed on the two adjusting blocks.

[0014] In one embodiment, the base plate has an adjustment groove, and at least a portion of the structure of the adjustment block is located within the adjustment groove.

[0015] In one embodiment, the width of the guide groove gradually increases towards the opening.

[0016] In one embodiment, the bending drive includes a bending cylinder, a slide plate, and two support arms. The bending cylinder is mounted on the support base, the slide plate is slidably mounted on the support base in a vertical direction, and the slide plate is connected to the output shaft of the bending cylinder. Both support arms are mounted on the slide plate, and the two ends of the roller shaft are rotatably connected to the two support arms respectively.

[0017] In one embodiment, two support assemblies are provided, with the two support assemblies located at opposite ends of the roller shaft.

[0018] In one embodiment, the cell tab bending mechanism further includes a pressing cylinder and a pressing block. The pressing cylinder is disposed on the top of the support base, and the pressing block is disposed on the output shaft of the pressing cylinder. The pressing block is disposed vertically downward. When the pressing cylinder drives the pressing block to descend, the pressing block presses the cell onto the cell conveying line.

[0019] In one embodiment, the cell tab bending mechanism further includes a base and a transverse cylinder. The transverse cylinder is disposed on the base, and the support is slidably disposed on the base. The support is connected to the output shaft of the transverse cylinder. The transverse cylinder is used to drive the support to slide closer to or away from the cell conveying line.

[0020] In one embodiment, the top support drive is a cylinder.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] The present invention relates to a battery cell tab bending mechanism applied on a battery cell conveying line. It includes a support base, a top support assembly, a clamping assembly, and a bending assembly. The top support assembly includes a top support drive and a top support block. The top support drive is mounted on the support base, and the top support block is mounted on the output shaft of the top support drive. The top support drive is used to move the top support block closer to the battery cell, so that the top support block is positioned between the substrate and the battery cell. The clamping assembly includes a clamping drive and two clamping components. The clamping drive is mounted on the support base, and both clamping components are mounted on the clamping drive. The clamping drive is used to drive the two clamping components to clamp the two ends of the substrate respectively. The assembly includes two locking blocks, both mounted on locking drive components. The locking drive components bring the two locking blocks closer together, causing them to clamp the base sheet. Each locking block has a guide groove; when the locking blocks approach the base sheet, at least a portion of the base sheet is positioned within the guide groove. The bending assembly includes two bending drive components and two rollers. The two bending drive components are mounted on a support base, and the two rollers are rotatably mounted on the two bending drive components. When the two bending drive components bring the two rollers closer together, they respectively roll and press the two welding sheets, causing them to adhere to the base sheet. Thus, by using two locking blocks to clamp and fix the base sheet, the base sheet is confined to a designated position, allowing the two rollers to reliably bend the welding sheets along with the tabs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the current collector plate according to one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the battery cell tab bending mechanism according to one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a card slot assembly according to one embodiment of the present invention;

[0027] Figure 4 for Figure 3 A partial structural diagram of the card slot assembly is shown;

[0028] Figure 5 for Figure 2 A partial structural diagram of the battery cell tab bending mechanism from another angle;

[0029] Figure 6for Figure 2 A partial structural diagram of the battery cell tab bending mechanism at another angle is shown.

[0030] Figure 7 This is a schematic diagram of the structure of a roller according to one embodiment of the present invention. Detailed Implementation

[0031] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention.

[0032] Please see Figures 2 to 4 A battery cell tab bending mechanism 10, applied on a battery cell conveying line, includes a support base 100, a top support assembly 200, a positioning assembly 300, and a bending assembly 400. The top support assembly 200 includes a top support drive member 210 and a top support block 220. The top support drive member 210 is disposed on the support base 100, and the top support block 220 is disposed on the output shaft of the top support drive member 210. The top support drive member 210 is used to drive the top support block 220 closer to the battery cell so that the top support block 220 is positioned between the base plate 21 and the battery cell. The positioning assembly 300 includes a positioning drive member 310 and two clamping members 320. The positioning drive member 310 is disposed on the support base 100, and the two clamping members 320 are disposed on the positioning drive member 310. The positioning drive member 310 is used to drive the two clamping members 320 to clamp the two ends of the base plate 21 respectively. The assembly includes two locking blocks 321, both of which are mounted on a locking drive member 310. The locking drive member 310 is used to drive the two locking blocks 321 closer together so that the two locking blocks 321 clamp the base piece 21 together. The locking blocks 321 are provided with guide grooves 321a. When the locking blocks 321 are close to the base piece 21, at least part of the structure of the base piece 21 is located in the guide grooves 321a. The bending assembly 400 includes two bending drive members 410 and two rollers 420. The two bending drive members 410 are both mounted on a support base 100. The two rollers 420 are rotatably mounted on the two bending drive members 410. The two bending drive members 410 are used to drive the two rollers 420 closer together so that the two rollers 420 respectively roll and press the two welding pieces 22 so that the two welding pieces 22 are attached to the base piece 21.

[0033] It should be noted that the cell tab bending mechanism 10 is installed adjacent to the cell conveyor line, which is used to transport the cells so that they can continuously pass through the cell tab bending mechanism 10. For example, the cell conveyor line can be a conveyor belt or other structure capable of moving the cells. The top support drive 210 is installed on the support base 100. For example, the top support drive 210 is a cylinder. The top support block 220 is installed on the output shaft of the top support drive 210. The top support drive 210 drives the top support block 220 to move laterally. When the top support block 220 approaches the cell 40, it slides between the base plate 21 and the cell 40, so that the top support block 220 supports the base plate 21, preventing the base plate 21 from damaging the side wall of the cell 40 when the welding sheet 22 is bent laterally. Furthermore, the positioning assembly 300 is used to clamp and fix the base plate 21. Specifically, the positioning drive component 310 is mounted on the support base 100, and two clamping components 320 are both mounted on the positioning drive component 310. The positioning drive component 310 drives the two clamping components 320 to clamp and fix the base plate 21. Further, the clamping component 320 includes two clamping blocks 321. The positioning drive component 310 drives the two clamping blocks 321 to move closer or further apart. When the two clamping blocks 321 move closer together, they jointly clamp and fix the base plate 21. Further, to ensure that the clamping blocks 321 can reliably clamp the base plate 21, clamping slots 321a are provided on the clamping blocks 321. When the clamping blocks 321 approach the base plate 21, at least a portion of the structure of the base plate 21 will be located within the clamping slots 321a. After the positioning assembly 300 fixes the base plate 21, the bending assembly 400 bends the two welding pieces 22, causing the two welding pieces 22 to adhere to the base plate 21. It should be noted that since the tabs of the battery cell 40 are welded to the solder sheet 22, bending the solder sheet 22 is equivalent to bending the solder sheet 22. Specifically, two bending drive components 410 are respectively installed at the top and bottom of the support base 100 along the vertical direction, and two rollers 420 are rotatably installed on the two bending drive components 410. For example, the rollers 420 are rotatably connected to the bending drive components 410 through bearings. In this way, the two bending drive components 410 drive the two rollers 420 to move closer or further apart. When the two rollers 420 move closer together, they roll the two solder sheets 22, causing both solder sheets 22 to adhere to the base plate 21, thus realizing the bending operation of the battery cell tabs. It should be noted that before bending the welding sheet 22, two clamping parts 320 are set to clamp and fix the two ends of the base sheet 21, so that the base sheet 21 is limited to the designated position. Therefore, the two rollers 420 can reliably perform the bending operation on the welding sheet 22.

[0034] Please see Figure 3In one embodiment, the positioning drive component 310 includes a sliding cylinder 311 and two grippers 312. The sliding cylinder 311 is mounted on the support base 100, and the two grippers 312 are mounted on the sliding cylinder 311. The sliding cylinder 311 is used to drive the two grippers 312 to move closer to or away from the substrate 21. Two clamping components 320 are respectively mounted on the output shafts of the two grippers 312.

[0035] It should be noted that the sliding cylinder 311 is mounted on the support base 100, and the two pneumatic grippers 312 are mounted on the sliding cylinder 311. The sliding cylinder 311 drives the two pneumatic grippers 312 to move synchronously, thereby moving them closer to or away from the substrate 21. It should also be noted that the two locking blocks 321 in the clamping component 320 are both mounted on the output shaft of the pneumatic grippers 312. The pneumatic grippers 312 drive the two locking blocks 321 to move closer to or away from each other. Furthermore, it should be noted that the pneumatic grippers 312 are finger cylinders.

[0036] Please see Figure 3 In one embodiment, the positioning drive 310 further includes a base plate 313 and two adjusting blocks 314. The base plate 313 is disposed on the output shaft of the sliding cylinder 311, and the two adjusting blocks 314 are respectively adjustablely disposed on the base plate 313. The two pneumatic grippers 312 are respectively disposed on the two adjusting blocks 314.

[0037] It should be noted that, in order to clamp substrates 21 of different lengths, the two clamping components 320 are configured to be laterally adjustable, making the distance between them adjustable. Specifically, the base plate 313 is fixedly mounted on the output shaft of the sliding cylinder 311, and two adjusting blocks 314 are adjustablely mounted on the base plate 313. For example, the adjusting blocks 314 have oblong holes, and bolts are inserted through these holes to fix the adjusting blocks 314 to the base plate 313. The pneumatic gripper 312 is mounted on the adjusting blocks 314. Thus, by changing the position between the adjusting blocks 314 and the base plate 313, the lateral position of the clamping components 320 can be changed, making it suitable for clamping substrates 21 of different lengths.

[0038] Please see Figure 3 In one embodiment, an adjustment groove 313a is provided on the base plate 313, and at least part of the structure of the adjustment block 314 is located in the adjustment groove 313a.

[0039] It should be noted that the adjustment groove 313a is arranged horizontally on the base plate 313, and the adjustment block 314 is adjusted in position by sliding within the adjustment groove 313a. In this way, by using the adjustment groove 313a to limit the adjustment block 314, the relative distance between the locking block 321 and the battery cell 40 can be kept consistent, so that the position of the locking block 321 can only be adjusted horizontally, which reduces the difficulty of adjusting the locking block 321.

[0040] Please see Figure 4 In one embodiment, the width D of the guide groove 321a gradually increases towards the opening. It should be noted that the width D of the guide groove 321a is set to a funnel-like structure. In this way, when the locking block 321 approaches the substrate 21, under the guiding action of the inner sidewall of the guide groove 321a, it can be ensured that part of the substrate 21 falls into the guide groove 321a, so that the locking block 321 can reliably clamp and fix the substrate 21.

[0041] Please see Figure 2 In one embodiment, the bending drive 410 includes a bending cylinder 411, a slide plate 412, and two support arms 413. The bending cylinder 411 is mounted on the support base 100. The slide plate 412 is slidably mounted on the support base 100 in the vertical direction and is connected to the output shaft of the bending cylinder 411. Both support arms 413 are mounted on the slide plate 412. The two ends of the roller shaft 420 are rotatably connected to the two support arms 413 respectively.

[0042] It should be noted that the bending cylinder 411 is mounted on the support base 100, and the slide plate 412 is mounted on the support base 100 via a slide rail. The slide plate 412 is connected to the output shaft of the bending cylinder 411, and the bending cylinder 411 drives the slide plate 412 to move up and down. One end of each of the two support arms 413 is fixedly mounted on the slide plate 412, and the other end of each support arm 413 is rotatably connected to the roller shaft 420. For example, the roller shaft 420 is mounted on the support arms 413 via bearings, allowing the roller shaft 420 to rotate relative to the support arms 413. Thus, the bending cylinder 411 drives the slide plate 412 to slide, which in turn causes the roller shaft 420 to roll over the welding sheet 22, causing the welding sheet 22 to be bent under force.

[0043] In one embodiment, two top support assemblies 200 are provided, and the two top support assemblies 200 are respectively located at both ends of the roller 420. It should be noted that when the battery cell 40 is placed in different directions on the battery cell conveying line, the orientation of the free end of the substrate 21 will also be different. Therefore, in order to improve compatibility, even if the battery cell 40 is placed in different directions, the free end of the substrate 21 can be reliably clamped.

[0044] Please see Figure 2 In one embodiment, the battery cell tab bending mechanism 10 further includes a pressing cylinder 510 and a pressing block 520. The pressing cylinder 510 is disposed on the top of the support base 100, and the pressing block 520 is disposed on the output shaft of the pressing cylinder 510. The pressing block 520 is disposed vertically downward. When the pressing cylinder 510 drives the pressing block 520 to descend, the pressing block 520 presses the battery cell 40 onto the battery cell conveying line.

[0045] It should be noted that the pressing cylinder 510 is installed on the top of the support base 100, and the pressing block 520 is installed on the output shaft of the pressing cylinder 510. The pressing cylinder 510 drives the pressing block 520 to move up and down. When the pressing block 520 descends, it can press the battery cell 40 onto the battery cell conveying line, so that the clamping block 321 can reliably clamp and fix the base plate 21.

[0046] Please see Figure 2 In one embodiment, the battery cell tab bending mechanism 10 further includes a base 610 and a transverse cylinder 620. The transverse cylinder 620 is disposed on the base 610, and the support seat 100 is slidably disposed on the base 610. The support seat 100 is connected to the output shaft of the transverse cylinder 620. The transverse cylinder 620 is used to drive the support seat 100 to slide closer to or away from the battery cell conveying line.

[0047] It should be noted that, in order to avoid interference from the top support assembly 200, the positioning assembly 300 and the bending assembly 400 to the cell delivery line, the support base 100 is set as a sliding structure. Specifically, a slide rail is installed on the base 610 and the support base 100 is installed on the slide rail so that the support base 100 can slide relative to the base 610.

[0048] Please see Figure 6 and Figure 7 In one embodiment, the support arm 413 has a waist-shaped hole 413a. The roller shaft 420 includes a roller body 421, a fixed shaft 422, two guide bosses 423, and two elastic members. The roller body 421 is rotatably mounted on the fixed shaft 422. The two guide bosses 423 are respectively disposed at both ends of the fixed shaft 422. The two ends of the fixed shaft 422 pass through the waist-shaped holes 413a on the two support arms 413, so that the two guide bosses 423 protrude from the side walls of the two support arms 413. The two elastic members are respectively disposed in the waist-shaped holes 413a of the two support arms 413. Within 13a, the elastic element abuts against the inner sidewalls of the fixed shaft 422 and the waist-shaped hole 413a respectively. In one of the elastic elements, the elastic element includes two springs 424a. Both springs 424a abut against the radial sides of the fixed shaft 422 and both springs 424a abut against the inner sidewall of the waist-shaped hole 413a. The locking block 321 has a sliding groove 321b on the side surface near the roller shaft 420. When the bending cylinder 411 drives the support arm 413 to approach the welding piece 22, the guide boss 423 slides along the sliding groove 413b.

[0049] It should be noted that the roller body 421 is rotatably mounted on the fixed shaft 422 via bearings, allowing the roller body 421 to rotate relative to the fixed shaft 422. Two guide bosses 423 are respectively mounted on both ends of the fixed shaft 422. Further, the support arm 413 has transversely distributed oblong holes 413a, through which the fixed shaft 422 passes when mounted on the support arm 413. Two elastic members fix both ends of the fixed shaft 422. Specifically, the elastic members are connected to the inner walls of the fixed shaft 422 and the oblong holes 413a. Specifically, the elastic members include two springs 424a, which abut against the radial sides of the fixed shaft 422 and the inner walls of the oblong holes 413a. Thus, under the elastic force of the two springs 424a, the fixed shaft 422 is positioned at the center of the oblong holes 413a. Furthermore, a groove 321b is provided on the side of the positioning block 321 near the roller shaft 420. When the bending cylinder 411 drives the support arm 413 to move up and down, so that the roller shaft 420 moves up and down, as the roller shaft 420 approaches the welding sheet 22, the guide boss 423 can slide along the groove 321b. The groove 321b is distributed vertically. When the guide boss 423 slides along the groove 321b, the inner sidewall of the groove 321b can guide and limit the guide boss 423. In this way, during the process of the roller body 421 rolling the welding sheet 22, the lateral movement of the roller shaft 420 is limited by the groove 321b, so the welding sheet 22 can be reliably bent to fit onto the base plate 21.

[0050] Please see Figure 6 In one embodiment, a guide portion is provided at the end of the slide groove 321b away from the guide groove 321a. The guide portion has a funnel structure. In this way, when the support arm 413 drives the roller shaft 420 to roll the welding sheet 22, the guide portion can guide the guide boss 423, so that the guide boss 423 eventually slides stably along the slide groove 321b.

[0051] Please see Figure 2 and Figure 5 In one embodiment, the battery cell tab bending mechanism 10 further includes a top pressing block 710 and a top pressing cylinder 720. The top pressing cylinder 720 is disposed on the support base 100, and the top pressing block 710 is disposed on the output shaft of the top pressing cylinder 720. The top pressing block 710 is aligned with the top support block 220. The top pressing cylinder 720 is used to drive the top pressing block 710 to move closer to or away from the top support block 220.

[0052] It should be noted that the top support drive 210 moves the top support block 220 between the base plate 21 and the battery cell 40. The two rollers 420, driven by the two bending drive components 410, move closer together, causing each roller to roll the two welding sheets 22, bending them so that they adhere to the base plate 21. However, because the two rollers 420 move vertically, and the welding sheets 22 and the base plate 21 have a certain elasticity, when the rollers 420 roll the welding sheets 22, they experience outward resistance from the welding sheets 22. This prevents the rollers 420 from reliably rolling the welding sheets 22, resulting in a gap between the welding sheets 22 and the base plate 21. Therefore, to avoid this gap after the welding sheets 22 are bent, a top pressure block 710 is provided to limit the rollers 420. Specifically, after the top support block 220 moves between the base plate 21 and the battery cell 40, the top pressure cylinder 720 drives the top pressure block 710 to approach the top support block 220. When the bending drive component 410 drives the roller 420 to roll the welding sheet 22, the roller 420 will be pressed and limited by the top pressure block 710 to prevent the roller 420 from shifting away from the welding sheet 22. Therefore, the roller 420 reliably rolls the welding sheet 22, so that the welding sheet 22 is tightly attached to the base plate 21 after bending, avoiding gaps between the welding sheet 22 and the base plate 21, thereby improving the bending quality of the current collector 20.

[0053] Please see Figure 4 In one embodiment, the locking assembly 300 further includes two spring tabs 330, which are respectively disposed on two locking blocks 321, so that at least a portion of the structure of the two spring tabs 330 extends into the locking groove 321a.

[0054] It should be noted that, in order to improve the fixing force of the substrate 21, a spring piece 330 is provided in the locking groove 321a. Specifically, one end of the spring piece 330 is fixedly installed on the inner side wall of the locking groove 321a, and the other end of the spring piece 330 is set obliquely downward along the vertical direction. In this way, when the locking block 321 rises / falls in the vertical direction, the locking block 321 approaches the substrate 21. As the substrate 21 slides into the locking groove 321a, the substrate 21 will be clamped by the spring piece 330 and the inner side wall of the locking groove 321a, thereby improving the stability of the current collector 20.

[0055] Please see Figure 3 In one embodiment, the positioning assembly 300 further includes a carrier plate 340 and an adjusting screw 350. The carrier plate 340 is arbitrarily mounted on the support base 100. A sliding cylinder 311 is mounted on the carrier plate 340. The adjusting screw 350 is screwed to the support base 100, and one end of the adjusting screw 350 supports the carrier plate 340.

[0056] It should be noted that when the thickness of the battery cells is inconsistent, the height of the substrate 21 will also be inconsistent. To ensure compatibility with substrates 21 at varying heights, the two locking blocks 321 are designed to be adjustable along their height. Specifically, one end of the carrier plate 340 is bolted to the support base 100. For example, the support base 100 has a slotted hole, allowing the height of the carrier plate 340 to be adjusted. The adjusting screw 350 is screwed to the support base 100, and its top end supports the carrier plate 340. Thus, by rotating the adjusting screw 350, the height of the carrier plate 340 can be adjusted. In one embodiment, two adjusting screws 350 are provided, each supporting one end of the carrier plate 340 to improve its stability.

[0057] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A battery cell tab bending mechanism, applied on a battery cell conveying line, characterized in that, include: Support base; A top support assembly, comprising a top support drive and a top support block, wherein the top support drive is disposed on the support base and the top support block is disposed on the output shaft of the top support drive, and the top support drive is used to drive the top support block closer to the battery cell so that the top support block is located between the substrate and the battery cell; A positioning assembly includes a positioning drive and two clamping components. The positioning drive is mounted on a support base, and the two clamping components are both mounted on the positioning drive. The positioning drive is used to drive the two clamping components to clamp the two ends of a substrate. Each clamping component includes two clamping blocks, both mounted on the positioning drive. The positioning drive is used to drive the two clamping blocks to move closer together so that they jointly clamp the substrate. Each clamping block has a guide groove, and when the clamping block moves closer to the substrate, at least a portion of the substrate structure is located within the guide groove. A bending assembly includes two bending drive components and two rollers. The two bending drive components are both mounted on the support base, and the two rollers are rotatably mounted on the two bending drive components. When the two bending drive components drive the two rollers to move closer to each other, the two rollers respectively roll and press the two welding sheets, so that the two welding sheets are attached to the base plate.

2. The cell tab bending mechanism according to claim 1, characterized in that, The positioning drive includes a sliding cylinder and two grippers. The sliding cylinder is mounted on the support base, and the two grippers are mounted on the sliding cylinder. The sliding cylinder is used to drive the two grippers closer to or further away from the substrate. The two clamping components are respectively mounted on the output shafts of the two grippers.

3. The cell tab bending mechanism according to claim 2, characterized in that, The positioning drive also includes a base plate and two adjusting blocks. The base plate is disposed on the output shaft of the sliding cylinder, and the two adjusting blocks are respectively adjustablely disposed on the base plate. The two pneumatic grippers are respectively disposed on the two adjusting blocks.

4. The cell tab bending mechanism according to claim 3, characterized in that, An adjustment groove is provided on the base plate, and at least part of the structure of the adjustment block is located in the adjustment groove.

5. The cell tab bending mechanism according to claim 1, characterized in that, The width of the guide groove gradually increases towards the opening.

6. The cell tab bending mechanism according to claim 1, characterized in that, The bending drive includes a bending cylinder, a sliding plate, and two support arms. The bending cylinder is mounted on the support base. The sliding plate is slidably mounted on the support base in a vertical direction and is connected to the output shaft of the bending cylinder. Both support arms are mounted on the sliding plate, and the two ends of the roller shaft are rotatably connected to the two support arms respectively.

7. The cell tab bending mechanism according to claim 1, characterized in that, There are two top support components, which are located at the two ends of the roller shaft, respectively.

8. The cell tab bending mechanism according to claim 1, characterized in that, The cell tab bending mechanism also includes a pressing cylinder and a pressing block. The pressing cylinder is located on the top of the support base, and the pressing block is located on the output shaft of the pressing cylinder. The pressing block is arranged vertically downwards. The pressing cylinder is used to drive the pressing block to descend so that the pressing block presses the cell onto the cell conveying line.

9. The cell tab bending mechanism according to claim 1, characterized in that, The cell tab bending mechanism also includes a base and a transverse cylinder. The transverse cylinder is disposed on the base, and the support is slidably disposed on the base. The support is connected to the output shaft of the transverse cylinder. The transverse cylinder is used to drive the support to slide closer to or away from the cell conveying line.

10. The cell tab bending mechanism according to claim 1, characterized in that, The top support drive component is a cylinder.

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