Tab flattening device
By designing a conveying device and clamping mechanism with V-shaped brackets and V-shaped pressure grooves, combined with telescopic cylinders and adjustable pallets, the problem of poor extreme ear flatness is solved, and the stability and efficiency are improved. Suitable for rolled cores of different lengths and diameters.
Patent Information
- Application Number
- CN202420883362.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The existing extreme ear flattening devices do not have the effect of the entire line of the end surface of the battery cell pole ear position before welding, and the equipment requires high foil status, which can easily lead to the tip bend of the extreme ear, and the wheel position needs to be adjusted frequently to ensure the effect.
A horizontal ear device including a conveying device and a clamping mechanism is designed, and the V-shaped bracket and the V-shaped pressure groove are fixed, and the flat block is driven to move through the telescopic mechanism, gradually retracting the electrode, and combined with an adjustable bracket and guide mechanism, adapt to roll cores of different lengths and diameters, ensuring stability and flattening effect.
The stability and flattening effect of the extreme ear are improved, saving loading and unloading operation time, improving production efficiency, and avoiding changes in the center height of the battery cell through reliable structural design.
Smart Images
Figure CN222133161U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery production, in particular to a tab leveling device. Background Art
[0002] After the positive electrode sheet, negative electrode sheet and separator in the cylindrical battery are wound to form a battery cell, the area on the positive electrode sheet that is not coated with active material forms the end face of the positive electrode at the tab, while the area on the negative electrode sheet that is not coated with active material forms the end face of the negative electrode at the tab. The end face at the tab needs to be welded to the current collector so that the battery current can be output from the current collector.
[0003] Since the end faces of the pole tabs are soft and easy to deform, when welding the current collector, applying pressure will cause the diameter of the entire pole tab end face to become larger, deformed or bulge outward, causing the battery cell to be unable to fit into the battery casing or to be connected to the battery casing and cause a short circuit. Therefore, before welding the current collector, the entire pole tab end face of the battery cell needs to be flattened and shaped, and then welded to the plate after the end faces of the battery cell are flat. At present, pre-folding wheels and smoothing wheels are mainly used to align the pole tabs, but this method often cannot be aligned in place, and the subsequent flattening effect is poor. At the same time, the pre-folding wheel has high requirements on the foil state, and it is easy to bend the pole tab. In addition, if the incoming material state is not good, the wheel position needs to be adjusted frequently to ensure the effect. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is: how to provide a tab leveling device with reasonable structural design, good stability and good leveling effect.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A tab leveling device, characterized in that it comprises a conveying device and a clamping mechanism mounted on the conveying device; the conveying device comprises a battery cell holder connected in sequence, the battery cell holder comprises two support plates arranged opposite to each other along the width direction of the conveying device, and the support plate has a V-shaped bracket; the clamping mechanism comprises a frame body and a first telescopic mechanism arranged vertically downward, a pressure block is installed at the telescopic end of the first telescopic mechanism, the pressure block has a V-shaped pressure groove arranged opposite to the V-shaped bracket, and a plurality of V-shaped pressure grooves are arranged equidistantly along the conveying direction of the conveying device; a leveling mechanism arranged one-to-one with the V-shaped pressure groove is provided below the clamping mechanism, the leveling mechanism comprises two second telescopic mechanisms arranged opposite to each other on both sides of the conveying device, a leveling block is installed at the telescopic end of the second telescopic mechanism, the leveling block has a spherical concave shaping groove facing one end of the conveying device, and the diameter of the shaping groove is larger than the diameter of the winding core to be leveled; in the conveying direction of the conveying device, the depth of the plurality of shaping grooves gradually decreases.
[0007] With the above structure, the core to be flattened is placed on the V-shaped bracket of the conveying device and conveyed to the bottom of the clamping mechanism according to the production rhythm. The first telescopic mechanism drives the pressing block to move downward and presses multiple cores on the support plate at the same time. The second telescopic mechanism drives the flattening block to move toward the lugs of the core. At the first flattening mechanism in the conveying direction, the lugs at both ends of the core are initially gathered due to the deeper shaping groove. After the clamping mechanism and the flattening mechanism are released, the conveying device continues to move and clamps again. At this time, the core located at the first flattening mechanism in the previous operation moves to the position of the second flattening mechanism. Since the shaping groove is shallower at this time, the lugs will be further gathered. This is repeated. In the alternating action of conveying and flattening, each core will be flattened and gathered multiple times, which not only ensures the working rhythm and good stability, but also achieves a better flattening effect. The above structure directly uses the V-shaped bracket of the support plate and the V-shaped pressing groove on the pressing block to fix the core, saving the loading and unloading operation time, thereby improving production efficiency.
[0008] Furthermore, the clamping mechanism also includes a pad fixedly arranged directly below the pressing block, and the pad is supportingly arranged below the battery cell bracket.
[0009] In this way, since the pad is supported under the battery holder, the pressure applied by the pressing block is ultimately borne by the pad, thereby preventing the battery holder from moving downward under pressure and changing the center height of the winding core, thereby ensuring flatness and reliability.
[0010] Furthermore, a guide plate inclined downward is connected to one side of the pad facing the incoming material direction.
[0011] In this way, the transported battery cell bracket can be smoothly moved to the pad through the inclined guide plate.
[0012] Furthermore, the V-shaped bracket and the V-shaped pressing groove are both coated with PET insulating material.
[0013] Furthermore, both sides of the conveying device are provided with third telescopic mechanisms arranged opposite to each other, the telescopic ends of the third telescopic mechanisms are connected to horizontally arranged support plates, and the second telescopic mechanisms located on the same side are all installed on the support plates on the same side.
[0014] In this way, the third telescopic mechanism drives the support plate to move, so that the spacing of the leveling mechanism can be changed, so that the winding cores of different lengths can be leveled.
[0015] Furthermore, the bottom of the support plate has a guide mechanism arranged along the width direction of the conveying device, and the support plate can be slidably arranged on the guide mechanism.
[0016] Furthermore, the first telescopic mechanism, the second telescopic mechanism and the third telescopic mechanism are all telescopic cylinders.
[0017] Furthermore, the support plate has a vertically arranged vertical plate, and the second telescopic mechanism is fixed to the vertical plate by bolts.
[0018] Furthermore, the vertical plate has a strip hole extending in the vertical direction, and the second telescopic mechanism is mounted on the strip hole in an adjustable manner up and down by bolts.
[0019] In summary, the utility model has the advantages of reasonable structural design, good stability, good leveling effect, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the conveying device and the clamping mechanism.
[0021] Figure 2 It is a schematic diagram of the structure of the leveling mechanism, conveying device and clamping mechanism in the conveying direction. DETAILED DESCRIPTION
[0022] The utility model is further described in detail below in conjunction with the embodiments.
[0023] When implementing: Figure 1 and Figure 2 As shown, a tab leveling device comprises a conveying device 1 and a clamping mechanism 2 mounted on the conveying device 1; the conveying device 1 comprises a battery cell holder connected in sequence, the battery cell holder comprises two support plates 11 arranged opposite to each other along the width direction of the conveying device 1, and the support plates 11 have a V-shaped bracket; the clamping mechanism 2 comprises a frame 21 and a first telescopic mechanism 22 arranged vertically downward, a pressing block 23 is installed at the telescopic end of the first telescopic mechanism 22, and the pressing block 23 has a V-shaped pressing groove arranged opposite to the V-shaped bracket, and the V-shaped pressing groove is arranged equidistantly along the conveying direction of the conveying device 1 There are multiple V-shaped brackets and V-shaped pressing grooves, both of which are covered with PET insulating material; a leveling mechanism 3 is provided below the clamping mechanism 2, which is arranged one-to-one with the V-shaped pressing grooves, and the leveling mechanism 3 includes two second telescopic mechanisms 31 arranged opposite to each other on both sides of the conveying device 1, and a leveling block 32 is installed at the telescopic end of the second telescopic mechanism 31, and the leveling block 32 has a spherical concave shaping groove 33 at one end facing the conveying device 1, and the diameter of the shaping groove 33 is larger than the diameter of the core to be leveled; in the conveying direction of the conveying device 1, the depth of the multiple shaping grooves 33 gradually decreases.
[0024] like Figure 1As shown, the clamping mechanism 2 further includes a pad 24 fixedly disposed directly below the pressing block 23, the pad 24 is supportedly disposed below the battery cell holder, and a guide plate 25 inclined downward is connected to one side of the pad 24 facing the incoming material direction.
[0025] With the above structure, the core to be flattened is placed on the V-shaped bracket of the conveying device and conveyed to the bottom of the clamping mechanism according to the production rhythm. The first telescopic mechanism drives the pressing block to move downward and presses multiple cores on the support plate at the same time. The second telescopic mechanism drives the flattening block to move toward the lugs of the core. At the first flattening mechanism in the conveying direction, the lugs at both ends of the core are initially gathered due to the deeper shaping groove. After the clamping mechanism and the flattening mechanism are released, the conveying device continues to move and clamps again. At this time, the core located at the first flattening mechanism in the previous operation moves to the position of the second flattening mechanism. Since the shaping groove is shallower at this time, the lugs will be further gathered. This is repeated. In the alternating action of conveying and flattening, each core will be flattened and gathered multiple times, which not only ensures the working rhythm and good stability, but also achieves a better flattening effect. The above structure directly uses the V-shaped bracket of the support plate and the V-shaped pressing groove on the pressing block to fix the core, saving the loading and unloading operation time, thereby improving production efficiency.
[0026] like Figure 2 As shown, the two sides of the conveying device 1 have third telescopic mechanisms 41 arranged opposite to each other, and the telescopic ends of the third telescopic mechanisms 41 are connected to horizontally arranged support plates 42, and the second telescopic mechanisms 31 located on the same side are all installed on the support plates 42 on the same side. In this way, the third telescopic mechanism drives the support plates to move, so that the spacing of the leveling mechanism can be changed, so that the winding cores of different lengths can be leveled. The bottom of the support plate 42 has a guide mechanism 43 arranged along the width direction of the conveying device 1, and the support plate 42 can be slidably arranged on the guide mechanism 43; the support plate 42 has a vertically arranged vertical plate 44, and the second telescopic mechanism 31 is fixed to the vertical plate 44 by bolts. Specifically, the vertical plate 44 has a strip hole extending vertically, and the second telescopic mechanism 31 is installed on the strip hole by bolts so that it can be adjusted up and down, so that it can be adaptively adjusted according to the winding cores of different diameters.
[0027] In this embodiment, the first telescopic mechanism 22, the second telescopic mechanism 31 and the third telescopic mechanism 41 are all telescopic cylinders.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A tab leveling device, characterized in that: The invention comprises a conveying device (1) and a clamping mechanism (2) mounted on the conveying device (1); the conveying device (1) comprises battery cell holders which are connected in sequence, the battery cell holders comprising two support plates (11) which are arranged opposite to each other along the width direction of the conveying device (1), the support plates (11) having a V-shaped bracket; the clamping mechanism (2) comprises a frame (21) and a first telescopic mechanism (22) which is arranged vertically downward, a pressing block (23) being mounted on the telescopic end of the first telescopic mechanism (22), the pressing block (23) having a V-shaped pressing groove which is arranged opposite to the V-shaped bracket, the V-shaped pressing groove extending along the width direction of the conveying device (1). A plurality of flattening mechanisms (3) are arranged equidistantly in the conveying direction; a flattening mechanism (3) is provided below the clamping mechanism (2) and is arranged one-to-one with the V-shaped pressing grooves; the flattening mechanism (3) comprises two second telescopic mechanisms (31) arranged opposite to each other on both sides of the conveying device (1); a flattening block (32) is installed at the telescopic end of the second telescopic mechanism (31); the flattening block (32) has a spherically concave shaping groove (33) at one end facing the conveying device (1); the diameter of the shaping groove (33) is larger than the diameter of the winding core to be flattened; in the conveying direction of the conveying device (1), the depths of the plurality of shaping grooves (33) gradually decrease.
2. The tab leveling device according to claim 1, characterized in that: The clamping mechanism (2) further comprises a pad (24) fixedly arranged directly below the pressing block (23), the pad (24) being supportedly arranged below the battery cell support.
3. The tab leveling device according to claim 2, characterized in that: A guide plate (25) arranged to be inclined downward is connected to one side of the pad (24) facing the incoming material direction.
4. The tab leveling device according to claim 1, characterized in that: The V-shaped bracket and the V-shaped pressing groove are both covered with PET insulating material.
5. The tab leveling device according to claim 1, characterized in that: The two sides of the conveying device (1) are provided with third telescopic mechanisms (41) arranged opposite to each other, the telescopic ends of the third telescopic mechanisms (41) are connected to horizontally arranged support plates (42), and the second telescopic mechanisms (31) located on the same side are both mounted on the support plates (42) on the same side.
6. The tab leveling device according to claim 5, characterized in that: The bottom of the support plate (42) has a guide mechanism (43) arranged along the width direction of the conveying device (1), and the support plate (42) is slidably arranged on the guide mechanism (43).
7. The tab leveling device according to claim 5, characterized in that: The first telescopic mechanism (22), the second telescopic mechanism (31) and the third telescopic mechanism (41) are all telescopic cylinders.
8. The tab leveling device according to claim 5, characterized in that: The support plate (42) has a vertically arranged vertical plate (44), and the second telescopic mechanism (31) is fixed to the vertical plate (44) by means of bolts.
9. The tab leveling device according to claim 8, characterized in that: The vertical plate (44) has a strip-shaped hole extending in the vertical direction, and the second telescopic mechanism (31) is mounted on the strip-shaped hole in an upward and downward adjustable manner by means of bolts.