CN219591458U

CN219591458U - Rolling core flattening device for full-tab battery

Info

Publication number: CN219591458U
Application number: CN202320288379.5U
Authority: CN
Inventors: 潘青海; 邢学奇; 姜晓霞; 白宁
Original assignee: State Power Investment Group Science and Technology Research Institute Co Ltd
Current assignee: State Power Investment Group Science and Technology Research Institute Co Ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-08-25
Anticipated expiration: 2033-02-10

Abstract

The utility model discloses a full-tab battery winding core flattening device which comprises a clamping assembly, a flattening disc, a sliding frame, an annular piece, a rotary drive, a first drive, a rolling piece and a second drive, wherein the clamping assembly is used for fixing a battery winding core and is provided with a disc part; the pressing plate is positioned on one side of the clamping assembly, is provided with a pressing plane, and is arranged on the other side of the clamping assembly in a sliding way and can move relative to the pressing plate; the annular piece is connected with a rotation drive, and the rotation drive is assembled on the sliding frame and is used for driving the annular piece to rotate; the first drive is arranged on the sliding frame, the disc part is connected with the first drive and can tilt and swing, and the first drive is used for driving the clamping assembly to move relative to the sliding frame; the rolling element is rotatably assembled on the inner side of the annular element, and the second drive is connected with the sliding frame. The flattening device can avoid damaging the surface of the tab during flattening, thereby avoiding the generation of metal scraps and ensuring the use safety of the battery.

Description

Rolling core flattening device for full-tab battery

Technical Field

The utility model relates to the technical field of battery processing, in particular to a full-tab battery winding core flattening device.

Background

Along with the rising of new energy industry, lithium batteries are rapidly developed, and at present, in order to enable the batteries to have higher discharge multiplying power and cost performance, the cost can be effectively controlled, and the lithium batteries mostly adopt a full-tab process. In the full tab process of the lithium battery, the full tab is firstly arranged and flattened, and can be welded later after certain strength is achieved.

At present, the leveling and finishing of all the lugs mostly adopts methods such as mechanical kneading and ultrasonic kneading. The mechanical rubbing method is to rub the tabs in an axial feeding mode, the method can lead the tabs to be inconsistent in overwhelming direction, the tabs are deformed, the contact effect of each tab is affected, the current collecting effect is further reduced, meanwhile, relative displacement movement exists between the rubbing plane part and the full tab, and the surface part of the full tab is damaged by the displacement, particularly under high-speed rotation, and metal scraps are generated. The ultrasonic wave rubbing method can lead to the pole lug to be broken, in particular to the positive aluminum foil, and the safety performance can be affected by the fact that scraps enter the battery.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides a full-tab battery winding core flattening device, which can avoid damaging the surface of a tab during flattening, further avoid generating metal scraps and ensure the use safety of a battery.

The full-tab battery winding core flattening device provided by the embodiment of the utility model comprises the following components:

the clamping assembly is used for fixing the battery winding core and is provided with a disc part;

the flattening disc is positioned on one side of the clamping assembly and is provided with a flattening surface which is used for acting on the lug of the battery winding core and flattening the lug when the clamping assembly swings circumferentially;

the sliding frame is arranged on the other side of the clamping assembly and can move relative to the flattening disc;

the annular piece is connected with the rotation drive, and the rotation drive is assembled on the sliding frame and is used for driving the annular piece to rotate;

the first drive is arranged on the sliding frame, the disc part is connected with the first drive and can tilt and swing, and the first drive is used for driving the clamping assembly to move relative to the sliding frame;

the rolling piece is rotationally assembled on the inner side of the annular piece and is used for rolling and moving along the circumferential direction of the disc part when the annular piece rotates so as to realize circumferential rotation and swing of the clamping assembly;

and the second drive is connected with the sliding frame and is used for driving the sliding frame to move so as to realize the adjustment of the distance between the clamping assembly and the flattening disc.

The full-tab battery winding core flattening device provided by the embodiment of the utility model can avoid damaging the surface of the tab during flattening, thereby avoiding the generation of metal scraps and ensuring the use safety of the battery.

In some embodiments, a mounting bracket is included, the flattening tray being provided to the mounting bracket.

In some embodiments, the flattened disc is mounted to the mount for circumferential rotation.

In some embodiments, the sliding frame is slidably mounted on the sliding seat, and the second driving device is connected with the sliding frame and used for driving the sliding frame to slide.

In some embodiments, the first drive includes a shaft body having an extension direction coincident with a movement direction of the carriage, the shaft body passing through the carriage and being movable relative to the carriage, and the shaft body being telescopic or movable relative to the carriage, the disc being ball-hinged to an end of the shaft body.

In some embodiments, the second drive includes an annular portion and a rotation shaft, the annular portion is provided to the rotation shaft, the annular member is provided to the annular portion, the rotation shaft is rotatably assembled to the carriage and is used for driving the annular portion to rotate, and the shaft body passes through the annular portion and the rotation shaft.

In some embodiments, a pivot is provided in the ring member, the pivot extending in a radial direction of the ring member, and the rolling member is rotatably fitted on an outer peripheral side of the pivot.

In some embodiments, the flattening disc comprises a conical portion, the conical portion is arranged on one side of the flattening disc, which faces away from the sliding frame, and a conical circumferential surface of the conical portion forms the flattening plane.

In some embodiments, the clamping assembly comprises a clamping tool and a connecting arm, one end of the connecting arm is connected with the clamping tool, the other end of the connecting arm is connected with the disc portion, and the clamping tool is used for clamping and fixing the battery winding core.

In some embodiments, the clamping fixture comprises two clamping plates, the two clamping plates are pivotally connected and oppositely arranged, and the battery winding core is clamped and fixed between the two clamping plates.

Drawings

Fig. 1 is a schematic view of a rubbing device according to an embodiment of the utility model.

Fig. 2 is a schematic illustration of the connection of the disc and the shaft of fig. 1.

Reference numerals:

a kneading device 100;

a battery winding core 200; a tab 201;

a clamping assembly 1; clamping a tool 11; a connecting arm 12; a disk portion 13;

a platen 2; a press plane 21;

a mounting frame 3;

a carriage 4;

a sliding seat 5;

a shaft body 6;

a rotation shaft 7;

an annular portion 8;

a ring 9; a pivot 91;

rolling elements 10.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 and 2, the rolling device (hereinafter referred to as rolling device 100) for the full tab battery winding core according to the embodiment of the present utility model includes a clamping assembly 1, a flattening plate 2, a sliding frame 4, a ring member 9, a rotation driving device, a first driving device, a rolling member 10 and a second driving device.

As shown in fig. 1, the clamping assembly 1 may be a clamping plate-like structure, for example, the clamping assembly 1 may include a clamping tool 11, the clamping tool 11 may include two symmetrical parts, and the two parts may specifically be two clamping plates, which may be oppositely arranged in the left-right direction, and the battery winding core 200 may be fixed in the clamping plates in a clamping manner. The clamping assembly 1 may further include a disc portion 13, as shown in fig. 1, where the disc portion 13 may be integrally provided with the clamping fixture 11, the disc portion 13 may be disc-shaped, and the disc portion 13 may be provided at a rear side of the clamping fixture 11 and spaced apart from the clamping fixture 11.

During use, the disc portion 13 may tilt relative to the axial direction (front-rear direction) of the battery winding core 200, and then the tilted disc portion 13 may swing circumferentially around the axis thereof, so as to realize circumferential swing of the clamping assembly 1 and the battery winding core 200.

The flattening disc 2 is located on one side of the clamping assembly 1, and the flattening disc 2 is provided with a flattening surface 21, wherein the flattening surface 21 is used for acting on the tab 201 of the battery winding core 200 and flattening the tab 201 when the clamping assembly 1 swings circumferentially. For example, as shown in fig. 1, the flattening plate 2 may have a disc shape, the flattening plate 2 may be provided at a front side of the clamping assembly 1 and spaced apart from the clamping assembly 1, and after the battery core 200 is fixed at the clamping assembly 1, an axis of the flattening plate 2 may be coaxially arranged with an axis of the battery core 200.

At least part of the rear surface of the flattening disc 2 forms a flattening surface 21, and when the clamping assembly 1 and the battery winding core 200 perform rotary swinging motion, the flattening surface 21 can press the tab 201 on the end surface of the battery winding core 200 and flatten (knead) the tab 201 towards the axis of the battery winding core 200.

As shown in fig. 1, the carriage 4 may be provided at a rear side of the clamping assembly 1, the carriage 4 may be connected to the clamping assembly 1, and the second drive (not shown) may be a screw drive, for example, the first drive may include a screw and a motor, wherein the screw may be screw-fitted with the carriage 4, and the screw may extend generally in a front-rear direction. When the clamping assembly is used, the lead screw can be driven by the motor to rotate, and then the sliding frame 4 can be driven to move forwards and backwards, so that the distance between the battery winding core 200 clamped by the clamping assembly 1 and the flattening disc 2 can be adjusted.

The ring member 9 is connected to a rotation drive which is assembled to the carriage 4 and is configured to drive the ring member 9 to rotate, as shown in fig. 1 and 2, the ring member 9 may be circular, a rotation drive (not shown) may be fixed to the front side of the carriage 4, the ring member 9 may be assembled to the front side of the rotation drive, and the axial direction of the ring member 9 is the front-rear direction. The rotation drive may be a rotary drive, by which the ring 9 may be driven to rotate in use.

The first drive is provided on the carriage 4, and the disc portion 13 is connected to the first drive and is tiltable, the first drive being for driving the clamping assembly 1 to move relative to the carriage 4. As shown in fig. 1 and 2, the first drive may include a shaft body 6, and the shaft body 6 may be a hydraulic telescopic cylinder extending generally in the front-rear direction and passing through the carriage 4 and the rotational drive. The disk portion 13 may be assembled at the front end of the shaft body 6 in a ball hinge connection manner, for example, the front end of the shaft body 6 may be in a spherical structure, the center position of the disk portion 13 may be a circular cavity, and the spherical structure may be matched in the circular cavity, so that the use requirements of tilting and swinging of the disk portion 13 are met.

The rolling member 10 is rotatably mounted on the inner side of the ring member 9, and the rolling member 10 is configured to roll-move along the circumferential direction of the disk portion 13 to realize circumferential swinging of the clamping assembly 1 when the ring member 9 rotates. Specifically, as shown in fig. 2, the rolling member 10 may be a roller, the inner peripheral side of the ring member 9 may be provided with a pivot shaft 91, the pivot shaft 91 may extend substantially in the radial direction of the ring member 9, the rolling member 10 may be rotatably fitted on the outer peripheral side of the pivot shaft 91, and the rolling member 10 is located in a space surrounded by the ring member 9.

When the battery roll core device is used, the sliding frame 4 can be driven to move through the second drive, so that the clamping assembly 1 can be moved to one side of the flattening disc 2, and the adjustment of the distance between the flattening disc 2 and the battery roll core 200 is realized; the distance between the disc portion 13 and the ring 9 can be adjusted by the first drive. When the disc portion 13 and the annular piece 9 are close to each other, the rolling piece 10 can be rolled on the rear end face of the flattening disc 2, so that the flattening disc 2 can achieve inclination swing adjustment, and the change of the telescopic quantity of the first drive can achieve change adjustment of the specific inclination angle of the disc portion 13, and further can achieve change adjustment of the inclination angle of the clamping assembly 1.

After the rotational drive is initiated, the rolling elements 10 may rotate synchronously with the ring element 9, i.e. in use, the rolling elements 10 may either revolve with the ring element 9 or spin about the pivot 91. Thus, the rolling members 10 can be periodically rolled and moved in the circumferential direction of the disk portion 13, and the rolling movement of the disk portion 13 and the clamp assembly 1 can be realized by the rolling members 10.

According to the full-tab battery roll core flattening device 100 disclosed by the embodiment of the utility model, rolling of the rolling piece 10 is adopted, the clamping assembly 1 can periodically perform rotary motion, the inclination angle of the clamping assembly 1 during rotary motion can be adjusted through the first driven telescopic quantity, when the clamping assembly 1 rotates, the battery roll core 200 can synchronously rotate along with the clamping assembly 1, and the flattening surface 21 on the flattening disc 2 can act on the tab 201 of the battery roll core 200 in rotary motion, so that flattening operation of the tab 201 of the battery roll core 200 can be realized.

In the process of rubbing flat, unlike the scheme in the prior art, the disk portion 13 and the clamping assembly 1 cannot rotate circumferentially (for the shaft body 6, the circumferential rotation caused by the friction action of the rolling element 10 is negligible), so that the friction action caused by the circumferential rotation cannot be generated between the flattening disk 2 and the tab 201 when the flattening disk 2 acts on the tab 201, damage to the surface of the tab 201 caused by friction is avoided, generation of metal scraps is avoided, and the use safety of a battery is ensured.

Secondly, the situation that the lug 201 (positive aluminum foil) is crushed due to the ultrasonic wave flattening method is avoided, and the situation that the safety performance is affected due to the fact that scraps enter the battery is further avoided.

In some embodiments, the flattening device 100 includes a mounting frame 3, and the flattening plate 2 is rotatably mounted to the mounting frame 3. As shown in fig. 1, the mounting frame 3 may be an L-shaped frame, and the flattening disc 2 may be rotatably mounted on the rear side of the mounting frame 3, for example, the flattening disc 2 may be rotatably mounted on the mounting frame 3 through a bearing, so that the flattening disc 2 may be self-adaptively rotated, and damage to the tab 201 caused by friction may be further avoided.

Alternatively, the rotation angle of the platen 2 may be 0 to 720 degrees.

In some embodiments, the rubbing device 100 includes a sliding base 5, the sliding frame 4 is slidably mounted on the sliding base 5, and the second driving device is connected to the sliding frame 4 and is used for driving the sliding frame 4 to slide.

For example, as shown in fig. 1, the sliding seat 5 may be a guide rail structure, a dovetail guide rail may be integrally formed on the sliding seat 5, the dovetail guide rail may generally extend along the front-rear direction, a dovetail guide groove may be provided at the bottom of the sliding frame 4, and the dovetail guide rail may be guided and fitted in the dovetail guide groove. Thereby, not only the guiding property of the movement of the carriage 4 can be enhanced, but also the stability, reliability and structural strength of the assembly of the carriage 4 can be ensured.

The second driving can be specifically screw driving, a threaded hole can be formed in the sliding frame 4, and the screw of the first driving can be in threaded fit with the threaded hole of the sliding frame 4, so that the moving precision and accuracy of the sliding frame 4 can be guaranteed.

In some embodiments, the first drive comprises a shaft 6, the extending direction of the shaft 6 coincides with the moving direction of the carriage 4, the shaft 6 passes through the carriage 4 and is movable relative to the carriage 4, and the shaft 6 is telescopic or movable relative to the carriage 4, and the disc 13 is ball-hinged to an end of the shaft 6.

Specifically, the first drive may also be a screw drive, the screw of which forms the shaft body 6, the screw of which may extend in the front-rear direction and pass through the carriage 4, and the screw of which may be screw-fitted with the carriage 4. The front end of the first driven screw may be ball-hinged to the disc portion 13 of the clamping assembly 1. The motor of the first drive may be connected to the rear end of the screw of the first drive, and the motor of the first drive may be rotation-stopped to be fitted in the corresponding guide groove.

When the pressing plate is used, the motor can drive the screw rod to rotate, and the rotating screw rod can move back and forth under the action of the threaded fit of the sliding frame 4, so that the back and forth movement adjustment of the pressing plate 2 can be realized. The driving mode of the screw rod is high in adjusting precision, stable and reliable, and the fineness and the stability of the rolling operation are guaranteed.

In some embodiments, as shown in fig. 1 and 2, the rotation driving device includes an annular portion 8 and a rotation shaft 7, where the rotation shaft 7 may be a rotation mechanism, the annular portion 8 may be fixed at a front end of the rotation shaft 7, and the annular member 9 may be sleeved on an outer peripheral side of the annular portion 8 and connected and fixed with the annular portion 8, and in use, the annular portion 8 may be driven to rotate by the rotation mechanism, so that the rotation driving of the annular member 9 and the rolling member 10 may be achieved.

It should be noted that, the annular portion 8 and the rotating shaft 7 may be both annular, and the shaft body 6 may pass through the inner holes of the annular portion 8 and the rotating shaft 7, whereby coaxial arrangement of the disc portion 13 and the annular portion 8 may be achieved, so that the rolling elements 10 may be rolled and moved along the circumferential edge of the disc portion 13.

In some embodiments, the platen 2 includes a conical portion, where the conical portion is disposed on a side of the platen 2 facing away from the sliding frame 4, that is, the conical portion may be integrally formed and disposed on a front side of the platen 2, a conical circumferential surface of the conical portion forms a platen 21, and a curved surface protrusion of the platen 21 is not greater than a flattened thickness and an area of the tab 201 designed by the battery cell.

In some embodiments, as shown in fig. 1, the clamping assembly 1 includes a connecting arm 12, where the connecting arm 12 may be L-shaped, one end of the connecting arm 12 is connected to the clamping tool 11, and the other end of the connecting arm 12 is connected to the disk portion 13, so as to implement an integrated arrangement of the clamping tool 11 and the disk portion 13, and implement consistency of the rotation and swing movements of the battery winding core 200 and the disk portion 13.

The full tab battery winding core flattening device can comprise the following steps when in use:

s1: firstly, the battery winding core 200 can be fixed at the clamping assembly 1, it should be noted that, when the battery winding core 200 can include a main body portion and tabs 201, the clamping assembly 1 can fully clamp the main body portion, that is, only the tabs 201 of the battery winding core 200 are exposed, so that the situation that when one end or two ends of the battery winding core 200 are flattened in the flattening process of the tabs 201, the unclamped but exposed winding core portion is easily deformed and gaps are generated is avoided.

S2: the second drive is started, the sliding frame 4 moves forward along the sliding seat 5, and after the battery winding core 200 clamped by the clamping assembly 1 moves to a set distance from the flattening disc 2, the second drive can be turned off so that the clamping assembly 1 is kept at the corresponding position.

S3: a second drive, which can effect a revolution drive of the ring element 9 and the rolling elements 10, and a rotation drive, which can effect an adjustment of the front-rear position of the clamping assembly 1, can then be started. Initially, the flattening surface 21 on the flattening plate 2 may be fed at a maximum angle (inclined angle), and when contacting the flattened end surface (front end surface) of the battery winding core 200, the battery winding core 200 may swing around the center of the battery winding core 200 by the rolling action of the rolling member 10, and the battery winding core 200 may be fed in the axial direction by the first drive.

Due to the rolling contact between the disk portion 13 and the rolling member 10, the adjustment of the flattening angle (inclination angle) and the swinging speed of the clamping assembly 1 (battery winding core 200) can be realized under the action of revolution and rotation of the rolling member 10, and along with the advancement of the flattening, the angle of the flattening surface 21 can be gradually reduced by the telescopic action of the first drive until being parallel to the flattening end surface of the battery winding core 200, so that the actions of flattening and flattening can be completed.

The full-tab battery winding core flattening device has the following effects:

1. the clamping component 1 can perform swinging movement with a variable angle, the pressing plane 21 can be enabled to act on the electrode lug 201 through swinging of the clamping component 1 to be variable in pressing angle, therefore, the pressing plate 2 can gradually increase the depth from outside to inside along the radial direction of the pressing end face of the battery winding core 200, so that the electrode lug 201 on the full-electrode-lug battery winding core 200 can be pressed down, the pressing direction of the electrode lug 201 of the full-electrode-lug battery winding core 200 is neat, the contact effect between the electrode lugs 201 is guaranteed, the current collecting effect of the full-electrode-lug battery is further improved, the battery electrolyte permeation effect is improved, and the production efficiency is improved.

2. The rolling movement of the rolling piece 10 realizes the rotation and the swinging of the disc part 13, further realizes the rotation and the swinging of the clamping assembly 1 and the battery winding core 200, so that the pressing plane 21 of the flattening disc 2 can not generate any relative movement with the electrode lug 201, further the friction damage of the electrode lug 201 is avoided, the generation of metal scraps is avoided, the safety of the full electrode lug battery is ensured, meanwhile, the pressing plane 21 of the flattening disc 2 is a curved surface section, the curvature of the curved surface pressing plane 21 is not more than the thickness and the area of flattening the electrode lug 201 designed by the full electrode lug 201, the force directly acting on the whole battery winding core 200 can be dispersed to the periphery in the final stage of flattening, the direct pressure on the battery winding core 200 is reduced, and the situation that gaps are generated between electrode plates of the battery winding core 200 is avoided.

3. By improving the clamping assembly 1 of the battery winding core 200, namely requiring that the clamping assembly 1 must fully clamp the main body part of the battery winding core 200 with all the tabs 201 exposed; the situation that the unclamped but exposed winding core part is easily deformed and gaps are generated when one or two ends of the battery winding core 200 are flattened in the flattening process of the tab 201 is avoided.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims

1. The utility model provides a full utmost point ear battery rolls up core and kneads flat device which characterized in that includes:

2. The full tab battery core rolling device of claim 1, comprising a mounting frame, wherein the flattening tray is disposed on the mounting frame.

3. The full tab battery core leveling device of claim 2, wherein the leveling disc is circumferentially rotatably mounted to the mounting bracket.

4. The full tab battery roll core leveling device of claim 1, comprising a sliding base, wherein the sliding frame is slidably mounted to the sliding base, and wherein the second drive is coupled to the sliding frame and is configured to drive the sliding frame to slide.

5. The full tab battery roll core leveling device of claim 1, wherein the first drive comprises a shaft body, an extending direction of the shaft body is consistent with a moving direction of the sliding frame, the shaft body passes through the sliding frame and is movable relative to the sliding frame, the shaft body is telescopic or movable relative to the sliding frame, and the disc portion spherical hinge is connected to an end portion of the shaft body.

6. The full tab battery core rolling device of claim 5, wherein the second drive comprises an annular portion and a rotating shaft, the annular portion is provided on the rotating shaft, the annular member is provided on the annular portion, the rotating shaft is rotatably assembled on the sliding frame and is used for driving the annular portion to rotate, and the shaft body penetrates through the annular portion and the rotating shaft.

7. The full tab battery core rolling device of claim 1, wherein a pivot is provided in the ring member, the pivot extends in a radial direction of the ring member, and the rolling member is rotatably fitted on an outer peripheral side of the pivot.

8. The full-tab battery roll core rolling device according to claim 1, wherein the flattening plate comprises a conical portion, the conical portion is arranged on one side of the flattening plate, which is away from the sliding frame, and the conical peripheral surface of the conical portion forms the flattening plane.

9. The full tab battery roll core flattening apparatus of any of claims 1-8, wherein the clamping assembly includes a clamping fixture and a connecting arm, one end of the connecting arm is connected to the clamping fixture, the other end of the connecting arm is connected to the disc, and the clamping fixture is used for clamping and fixing the battery roll core.

10. The full tab battery roll core leveling device of claim 9, wherein the clamping fixture comprises two clamping plates, the two clamping plates are pivotally connected and oppositely arranged, and the battery roll core is clamped and fixed between the two clamping plates.