Battery tab cutting device

Abstract

The utility model belongs to the technical field of battery assembly, and discloses a battery tab cutting device. The device comprises a fixing frame, a linear driving assembly, a rotary driving assembly and a cutter, wherein the linear driving assembly is mounted on the fixing frame; the fixed end of the rotary driving assembly is connected to the transmission end of the linear driving assembly, so that the rotary driving assembly can move in the direction close to or away from the to-be-cut tab of the battery; the cutter is connected to the transmission end of the rotary driving assembly so that the cutter can rotate in the circumferential direction of the battery to cut off the redundant part of the to-be-cut tab. Through the device, the structure is simplified, the device is convenient to use, the cutter can rapidly and cleanly cut redundant parts of the tabs under the action of the linear driving assembly and the rotary driving assembly, residues are avoided, the defects that an existing tab cutting mechanism is long in consumed time, low in working efficiency and residues exist in cutting in the mode that the tabs are cut back and forth along a straight line can be overcome, and the working efficiency is improved. And the working efficiency is greatly improved, and the production quality of the battery is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery assembly, in particular to a battery tab cutting device. Background Art

[0002] At present, in the manufacturing process of lithium batteries, a bending device is needed to flatten the tabs on the battery electrodes, and then a tab cutting mechanism is used to cut the redundant tabs on the battery electrodes. However, the traditional tab cutting mechanism is large in size. Usually, a cutter directly cuts the tabs along a straight line from the surface of the battery. But after cutting, traces of the cut often remain on the battery surface, resulting in the inability to guarantee the product quality. If cutting back and forth multiple times, it will also lengthen the working time and lead to low working efficiency.

[0003] Therefore, there is an urgent need for a battery tab cutting device to solve the technical problems existing in the existing tab cutting mechanism. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a battery tab cutting device, which is used to solve the technical problems of low working efficiency and inability to guarantee product quality of the existing tab cutting mechanism.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The battery tab cutting device includes: a fixed frame; a linear drive assembly installed on the fixed frame; a rotary drive assembly, the fixed end of the rotary drive assembly is connected to the drive end of the linear drive assembly, and the linear drive assembly can control the rotary drive assembly to move in a direction close to or away from the tab to be cut of the battery; a cutter connected to the drive end of the rotary drive assembly, and the rotary drive assembly can control the cutter to rotate along the circumferential direction of the battery to cut off the redundant part of the tab to be cut.

[0007] Preferably, the battery includes a cylindrical battery, the cutter has a circular arc inner cutting surface, and the circular arc inner cutting surface is adapted to the outer surface shape of the cylindrical battery.

[0008] Preferably, the rotary drive assembly includes a rotary drive member, a transmission element and a connecting rod. The rotary drive member is installed on the fixed frame, the rotary drive member is drivingly connected to the transmission element, the transmission element is drivingly connected to the connecting rod, and the connecting rod is connected to the cutter and rotatably connected to the drive end of the linear drive assembly.

[0009] Preferably, the transmission element includes a driving wheel, a transmission bar, a driven wheel and a sliding coupling member. The driving wheel is drivingly connected to the rotary driving member. The transmission bar is drivingly connected to the driving wheel and the driven wheel. The driven wheel is drivingly connected to the sliding coupling member. The sliding coupling member is drivingly connected to the connecting rod, so that the rotary driving member and the linear driving assembly can respectively control the connecting rod to perform rotary motion and linear motion.

[0010] Preferably, the sliding coupling member includes a sliding sleeve, which includes an inner sleeve and an outer sleeve. The inner sleeve is slidably sleeved on the outer sleeve. The inner sleeve is fixedly connected to the connecting rod. The outer sleeve is drivingly connected to the driven wheel, so that the outer sleeve can drive the inner sleeve to rotate synchronously.

[0011] Preferably, the linear driving assembly includes a linear driving member and a jaw. The linear driving member is fixedly arranged on the fixed frame. The driving end of the linear driving member is drivingly connected to the jaw. The connecting rod is rotatably connected to the jaw.

[0012] Preferably, the battery tab cutting device further includes a cleaning assembly, which is installed on the fixed frame and communicated with an external negative pressure device. The end of the cleaning assembly facing the tab to be cut is provided with a suction hole.

[0013] Preferably, the cleaning assembly includes a fixing plate and a suction pipe. The suction pipe is fixedly arranged on the fixing plate. The fixing plate is fixedly arranged on the fixed frame. One end of the suction pipe is communicated with the external negative pressure device, and the other end of the suction pipe has the suction hole.

[0014] Preferably, the battery tab cutting device further includes a clamping assembly, which includes a first clamping arm and a second clamping arm arranged at intervals. A processing area for the battery to pass through is defined between the first clamping arm and the second clamping arm. The first clamping arm and the second clamping arm can move towards each other to cooperate to clamp the battery, or can move away from each other to release the battery.

[0015] Preferably, the clamping assembly further includes a linear slide rail, which is fixedly arranged on the fixed frame. The first clamping arm and the second clamping arm are slidably arranged on the linear slide rail.

[0016] Preferably, the clamping assembly further includes at least one elastic member. One end of at least one elastic member is fixedly arranged, and the other end is connected to the first clamping arm or the second clamping arm.

[0017] Advantages of the present utility model: The battery tab cutting device provided in this embodiment has a simple structure and is easy to use. Under the action of the linear drive assembly and the rotary drive assembly, the cutting knife can quickly cut off the redundant part of the tab cleanly without residue, avoiding the defects of long time consumption, low working efficiency and residue in the existing tab cutting mechanism that reciprocates along a straight line for cutting, greatly improving the working efficiency and effectively guaranteeing the production quality of the battery. Description of the Drawings

[0018] Figure 1 is a schematic structural view of the battery tab cutting device provided in the embodiment of the present utility model from the first perspective;

[0019] Figure 2 is a schematic structural view of the battery tab cutting device provided in the embodiment of the present utility model from the second perspective;

[0020] Figure 3 is Figure 1 a partial enlarged view of part A in

[0021] Figure 4 is a schematic structural view of part of the battery tab cutting device provided in the embodiment of the present utility model;

[0022] Figure 5 is Figure 4 a partial enlarged view of part B in

[0023] Figure 6 is a schematic structural view of the clamping assembly provided in the embodiment of the present utility model.

[0024] In the figure:

[0025] 100, battery;

[0026] 1, fixed frame; 2, linear drive assembly; 21, linear drive member; 22, jaw; 3, rotary drive assembly; 31, rotary drive member; 321, driving wheel; 322, transmission bar; 323, driven wheel; 33, connecting rod; 4, cutting knife; 5, clamping assembly; 51, first clamping arm; 52, second clamping arm; 53, slide rail; 54, base; 55, slider; 56, elastic member; 6, cleaning assembly; 601, suction hole; 61, fixing plate; 62, suction pipe. Detailed Embodiments

[0027] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that only parts related to the present utility model rather than all structures are shown in the drawings for the convenience of description.

[0028] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0030] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", and "left" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0031] In the prior art, during the process of cutting the tabs of the battery 100, the excess tab portions exposed on the outer surface of the battery 100 are usually cut along a straight line and back and forth multiple times, which to a certain extent affects the overall operation efficiency of cutting the tabs of the battery 100, is time-consuming and laborious, and the cutting is not clean, thus seriously reducing the production quality of the battery 100. The battery tab cutting device provided by this application improves the cutting method, thereby effectively improving the cutting efficiency and completion degree of the tabs of the battery 100, and significantly improving the production quality of the battery 100.

[0032] This embodiment provides a battery tab cutting device, referring to Figures 1 to 4As shown in the figure, the battery tab cutting device includes a fixing frame 1, a linear driving component 2, a rotary driving component 3, and a cutter 4. The fixing frame 1 is fixedly installed on a horizontal plane, and the transfer jig can rotate the battery 100 to one side of the fixing frame 1 along with the turntable; the linear driving component 2 is installed on the fixing frame 1; the fixed end of the rotary driving component 3 is connected to the driving end of the linear driving component 2, so that the linear driving component 2 can control the rotary driving component 3 to move in a direction close to or away from the tab to be cut of the battery 100; the cutter 4 is connected to the driving end of the rotary driving component 3, and the rotary driving component 3 is set to be able to control the cutter 4 to rotate along the circumferential direction of the battery 100 to cut off the redundant part of the tab to be cut.

[0033] In this embodiment, referring to Figure 3 As shown in the figure, the rotary driving component 3 includes a rotary driving member 31, a transmission element, and a connecting rod 33. The rotary driving member 31 is installed on the fixing frame 1. The rotary driving member 31 is drivingly connected to the transmission element, and the transmission element is drivingly connected to one end of the connecting rod 33. One end of the connecting rod 33 is also connected to the cutter 4, and the other end of the connecting rod 33 is rotatably connected to the driving end of the linear driving component 2. Through the above settings, when the battery 100 moves to the designated position along with the transfer jig, the linear driving component 2 is activated to drive the connecting rod 33 to move linearly in a direction close to the battery 100, so that the cutter 4 can move to a position where it fits the outer peripheral surface of the battery 100. Subsequently, the rotary driving member 31 is activated to drive the connecting rod 33 to rotate simultaneously, so that the cutter 4 can rotate while keeping close to the outer peripheral surface of the battery 100, thereby achieving the purpose of cutting off the redundant part of the tab exposed outside the battery 100.

[0034] Preferably, the rotary driving member 31 adopts a rotary motor, and the rotary motor can realize the automatic rotation of the connecting rod 33, which can improve the overall automation degree of the device.

[0035] It should be noted that in this embodiment, as Figure 4 shown in the figure, the linear driving component 2 includes a linear driving member 21 and a jaw 22. The linear driving member 21 is fixedly arranged on the fixing frame 1. The driving end of the linear driving member 21 is drivingly connected to the jaw 22, and the connecting rod 33 is rotatably connected to the jaw 22. One specific implementation manner of this embodiment is that the linear driving member 21 is an electric cylinder, the piston rod of the electric cylinder is connected to the jaw 22, and the piston rod can move telescopically in the vertical direction; a limiting portion is convexly provided along the circumferential direction at the other end of the connecting rod 33, and the jaw 22 is clamped at the bottom of the limiting portion, so that the connecting rod 33 can ensure the connection stability with the jaw 22 through the limiting portion and prevent the connecting rod 33 from disengaging from the jaw 22.

[0036] During specific use, when the battery 100 moves to the designated position, the electric cylinder is activated. The piston rod of the electric cylinder can control the gripper 22 to descend, and the gripper 22 then controls the connecting rod 33 to descend. When the rotary driving member 31 is activated, the connecting rod 33 can rotate relative to the gripper 22 at this time, and it is safe and reliable. By setting the electric cylinder, the displacement of the cutting knife 4 can be accurately controlled, so that the cutting knife 4 can accurately descend to a position that fits the outer peripheral surface of the battery 100, thereby ensuring the cutting quality.

[0037] In this embodiment, referring to Figure 3 As shown, the transmission element includes a driving wheel 321, a transmission belt 322, a driven wheel 323, and a sliding connection member (not shown in the figure). Among them, the driving wheel 321 is drivingly connected to the rotary driving member 31, the transmission belt 322 is drivingly connected to the driving wheel 321 and the driven wheel 323, the driven wheel 323 is drivingly connected to the sliding connection member, and the sliding connection member is drivingly connected to the connecting rod 33, so that the rotary motor and the electric cylinder can respectively control the connecting rod 33 to perform rotational motion and linear motion. One specific implementation of this embodiment is that the transmission belt 322 is a transmission belt. Through the above transmission elements, the transmission belt can effectively transmit power from the rotary motor to the connecting rod 33, which helps to reduce energy loss and has strong stability.

[0038] Of course, it can be understood that in other specific implementations, the transmission belt 322 can also be a transmission chain. At this time, both the driving wheel 321 and the driven wheel 323 are gears to achieve driving connection with the transmission belt 322.

[0039] Furthermore, in this embodiment, the sliding connection member includes a sliding sleeve. The sliding sleeve includes an inner sleeve and an outer sleeve. The inner sleeve is slidably sleeved on the outer sleeve. The inner sleeve is sleeved and fixedly connected to the connecting rod 33, and the outer sleeve is sleeved and fixedly connected to the inner surface of the driven wheel 323, so that the driven wheel 323 can drive the outer sleeve to rotate synchronously, and then the outer sleeve can drive the inner sleeve, the connecting rod 33, and the cutting knife 4 to rotate synchronously. One specific implementation of this embodiment is that in the sliding sleeve, a slider 55 can be convexly provided on the outer side wall of the inner sleeve, and a sliding groove can be provided on the inner side wall of the outer sleeve. The slider 55 is slidably arranged in the sliding groove, so that the inner sleeve can slide relative to the outer sleeve, and when the outer sleeve rotates, the inner sleeve can also rotate synchronously, thereby achieving the purpose that the connecting rod 33 performs linear motion and rotational motion respectively under the action of the linear driving assembly 2 and the rotary driving assembly 3.

[0040] After the battery 100 moves to the designated position, in order to ensure the stability of the battery 100, improve the cutting quality and safety reliability, the battery tab cutting device provided in this embodiment further includes a clamping assembly 5. The clamping assembly 5 can clamp the battery 100 located at the designated position to prevent the battery 100 from tilting and moving, thereby ensuring the cutting effect of the cutting knife 4.

[0041] Specifically, in this embodiment, as Figure 5 shown, the clamping assembly 5 includes a first clamping arm 51 and a second clamping arm 52 which are arranged at intervals. A processing area for the battery 100 to pass through is defined between the first clamping arm 51 and the second clamping arm 52 (it can be understood that this processing area is the above-mentioned designated position). The first clamping arm 51 and the second clamping arm 52 can move towards each other or away from each other. When moving towards each other, the first clamping arm 51 and the second clamping arm 52 can cooperate on both sides of the battery 100 to firmly clamp the battery 100, so that the battery 100 can maintain a vertical posture in the processing area, ensuring that the cutting tool 4 can completely fit on the outer peripheral surface of the battery 100 after descending, avoiding the situation that the outer peripheral surface of the battery 100 is damaged due to the generation of an inclination angle between the cutting tool 4 and the battery 100, and also helping to cut off the redundant part of the tab completely. After cutting off the redundant part of the tab, the first clamping arm 51 and the second clamping arm 52 can move away from each other to automatically release the battery 100, so that the battery 100 can rotate with the turntable to the next process for processing.

[0042] It should be noted that in this embodiment, notches are provided on the sides of the first clamping arm 51 and the second clamping arm 52 facing the battery 100. The shape of the notch is the same as the outer peripheral surface of the battery 100, which can ensure that the contact surfaces of the first clamping arm 51 and the second clamping arm 52 with the battery 100 fit perfectly, thereby improving the stability of fixation and the accuracy of docking.

[0043] More specifically, as Figure 6 shown, the clamping assembly 5 further includes a linear slide rail 53. In this embodiment, the linear slide rail 53 is fixedly arranged on the fixing frame 1 through a base 54, and the linear slide rail 53 extends along the clamping direction. The first clamping arm 51 and the second clamping arm 52 are slidably arranged on the linear slide rail 53 through sliders 55, so that through the action of the linear slide rail 53, the first clamping arm 51 and the second clamping arm 52 can accurately cooperate to clamp the battery 100, and at the same time ensure that the notch can accurately dock with the outer peripheral surface of the battery 100, greatly improving the stability of the battery 100 and the quality of tab cutting.

[0044] More specifically, the clamping assembly 5 further includes at least one elastic member 56. In one specific embodiment of the present embodiment, the clamping assembly 5 includes only one elastic member 56. One end of the elastic member 56 is fixedly arranged, and the other end is fixedly connected to the second clamping arm 52. Through the above arrangement, when the battery 100 is located in the area to be processed, first control the movement of the first clamping arm 51 so that the notch of the first clamping arm 51 is butted against the outer peripheral surface of the battery 100, and then control the second clamping arm 52 to move towards the first clamping arm 51 so that the notch of the second clamping arm 52 is also butted against the outer peripheral surface of the battery 100. At this time, the elastic member 56 can be compressed and deformed to absorb the loading pressure between the second clamping arm 52 and the battery 100, which can prevent the battery 100 from being squeezed and deformed due to excessive impact or pressure, thus maintaining the safety of the battery 100.

[0045] It should be noted that if the redundant part of the tab remains on the outer surface of the battery 100, when the cutting tool 4 rotates and cuts multiple times, it is very likely that the cutting tool 4 will cut the redundant part of the tab into pieces, and the pieces of the redundant part of the tab will adhere to the outer surface of the battery 100, the cutting tool 4, the first clamping arm 51 or the second clamping arm 52. When the cutting tool 4 rotates next time, or when the next battery 100 is clamped in the area to be processed, the pieces of the redundant part of the tab will interfere with the rotation of the cutting tool 4, resulting in uneven cutting. It may also affect the clamping effect of the clamping assembly 5, making it impossible to firmly clamp the next battery 100, resulting in a decline in the cutting quality of the next battery 100 and uneven quality of the batteries 100 in the same batch.

[0046] To overcome the above defects, the battery tab cutting device provided in this embodiment further includes a cleaning assembly 6. The cleaning assembly 6 is installed on the fixing frame 1 and communicated with an external negative pressure device. And a suction hole 601 is provided at one end of the cleaning assembly 6 facing the tab to be cut. After the cutting tool 4 cuts off the redundant part of the tab from the battery 100, the redundant part of the tab can be evacuated from the battery 100 through the suction hole 601 by the external negative pressure device. Through the above arrangement, when the cutting tool 4 starts to rotate and cut, the external negative pressure device is simultaneously started to suck and collect the cut redundant part of the tab through the suction hole 601, preventing the cut redundant part of the tab from staying on the battery 100, thereby preventing the redundant part of the tab from interfering with the cutting area, and further significantly improving the cutting quality, stability and the production quality consistency of the batteries 100 in the same batch.

[0047] Specifically, the cleaning component 6 includes a fixing plate 61 and a suction pipe 62. In one specific embodiment of this embodiment, a through hole is formed through the middle of the fixing plate 61. One end of the suction pipe 62 is limited to pass through the through hole and then connected to an external negative pressure device. The other end of the suction pipe 62 is aligned with the area to be processed and has a suction hole 601, so that the external negative pressure device collects the redundant part of the tab through the suction pipe 62. The suction pipe 62 provides a sealed environment for the transfer of the redundant part of the tab, preventing the redundant part of the tab from leaking out during the transfer process.

[0048] Exemplarily, taking the example of cutting the redundant part of the upper tab of a cylindrical battery by this device, the beneficial effects of this device will be described.

[0049] When applying this battery tab cutting device to cut the redundant part of the tab, the battery 100 in the area to be processed is clamped by the first clamping arm 51 and the second clamping arm 52. Subsequently, the electric cylinder controls the clamping jaw 22 and the connecting rod 33 to descend, so that the inner peripheral surface of the cutting knife 4 abuts against the outer peripheral surface of the battery 100. Subsequently, the rotation motor controls the rotation of the driving wheel 321, and through the transmission belt, the driven wheel 323 and the outer sleeve, the connecting rod 33 and the cutting knife 4 are controlled to start rotating. The number of rotation circles of the cutting knife 4 is not limited in this application. Exemplarily, in this embodiment, the cutting knife 4 rotates 2-3 circles, so that the redundant part of the tab can be cut cleanly. At the same time, the external negative pressure device is turned on to suck away the redundant part of the cut tab, ensuring the cleanliness of the area to be processed. After cutting one battery 100, the first clamping arm 51 and the second clamping arm 52 release the battery 100, and the electric cylinder controls the clamping jaw 22 to drive the connecting rod 33 and the cutting knife 4 to rise away from the battery 100. The battery 100 is transferred to the next process, and then the next battery 100 is transferred to the area to be processed for cutting, and the above cutting process is repeated... and so on until the same batch of batteries 100 is cut.

[0050] Preferably, in this embodiment, the cutting knife 4 has an arc-shaped inner cutting surface, and the arc-shaped inner cutting surface is adapted to the outer surface shape of the cylindrical battery, so that the cutting knife 4 can be closely attached to the outer peripheral surface of the battery 100, thereby helping to improve the cutting effect of the cutting knife 4 on the cylindrical battery. It can be understood that in this embodiment, the shapes of the notches of the first clamping arm 51 and the second clamping arm 52 are also arc-shaped to be adapted to the outer surface shape of the battery 100.

[0051] It should be noted that in this embodiment, the battery tab cutting device includes two sets of linear drive components 2, two sets of rotary drive components 3, two cutting knives 4, two first clamping arms 51 and two second clamping arms 52. One set of linear drive components 2, rotary drive components 3, and one of the cutting knives 4, first clamping arm 51 and second clamping arm 52 are used to cut the tabs (which can be a positive tab group or a negative tab group) on one of the cylindrical batteries, and the other set of linear drive components 2, rotary drive components 3, and the other cutting knife 4, first clamping arm 51 and second clamping arm 52 are used to cut the tabs (which can be a positive tab group or a negative tab group) on the other cylindrical battery, so that the battery tab cutting device can process two cylindrical batteries simultaneously, further improving the working efficiency.

[0052] The above-mentioned battery tab cutting device has a simple structure and is easy to use. Under the action of the linear drive component 2 and the rotary drive component 3, the cutting knife 4 can quickly cut off the redundant part of the tab cleanly without residue, which can avoid the defects of long time consumption, low working efficiency and residue in the existing tab cutting mechanism that reciprocates along a straight line, greatly improving the working efficiency and effectively guaranteeing the production quality of the battery 100.

[0053] In the description of this specification, the description referring to terms such as "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0054] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A battery tab cutting device, characterized in that: include: Fixed frame (1); A linear drive assembly (2), wherein the linear drive assembly (2) is mounted on the fixed frame (1); A rotary drive assembly (3), wherein a fixed end of the rotary drive assembly (3) is connected to a transmission end of the linear drive assembly (2), and the linear drive assembly (2) is capable of controlling the rotary drive assembly (3) to move in a direction approaching or away from a tab to be cut of the battery (100); A cutter (4), the cutter (4) being connected to the transmission end of the rotary drive assembly (3), the rotary drive assembly (3) being capable of controlling the cutter (4) to rotate along the circumferential direction of the battery (100) so as to cut off the redundant portion of the tab to be cut.

2. The battery tab cutting device according to claim 1, characterized in that: The battery (100) comprises a cylindrical battery, and the cutter (4) has an arc-shaped inner section, which is configured to match the shape of the outer surface of the cylindrical battery.

3. The battery tab cutting device according to claim 1, characterized in that: The rotary drive assembly (3) comprises a rotary drive member (31), a transmission element and a connecting rod (33); the rotary drive member (31) is mounted on the fixed frame (1); the rotary drive member (31) is transmission-connected to the transmission element; the transmission element is transmission-connected to the connecting rod (33); the connecting rod (33) is connected to the cutter (4) and is rotatably connected to the transmission end of the linear drive assembly (2).

4. The battery tab cutting device according to claim 3, characterized in that: The transmission element comprises a driving wheel (321), a transmission bar (322), a driven wheel (323) and a sliding connection member, wherein the driving wheel (321) is drivingly connected to the rotary drive member (31), the transmission bar (322) is drivingly connected to the driving wheel (321) and the driven wheel (323), the driven wheel (323) is drivingly connected to the sliding connection member, and the sliding connection member is drivingly connected to the connecting rod (33), so that the rotary drive member (31) and the linear drive assembly (2) can respectively control the connecting rod (33) to perform rotary motion and linear motion.

5. The battery tab cutting device according to claim 4, characterized in that: The sliding connection part comprises a sliding sleeve, which comprises an inner sleeve and an outer sleeve, wherein the inner sleeve is slidably sleeved on the outer sleeve, the inner sleeve is fixedly connected to the connecting rod (33), and the outer sleeve is transmission-connected to the driven wheel (323), so that the outer sleeve can drive the inner sleeve to rotate synchronously.

6. The battery tab cutting device according to claim 3, characterized in that: The linear drive assembly (2) comprises a linear drive member (21) and a clamping jaw (22); the linear drive member (21) is fixedly mounted on the fixed frame (1); a transmission end of the linear drive member (21) is transmission-connected to the clamping jaw (22); and the connecting rod (33) is rotatably connected to the clamping jaw (22).

7. The battery tab cutting device according to any one of claims 1 to 6, characterized in that: The battery tab cutting device further comprises a cleaning assembly (6), wherein the cleaning assembly (6) is mounted on the fixing frame (1) and is connected to an external negative pressure device, and a suction hole (601) is provided at one end of the cleaning assembly (6) facing the tab to be cut.

8. The battery tab cutting device according to claim 7, characterized in that: The cleaning component (6) comprises a fixing plate (61) and a suction pipe (62), wherein the suction pipe (62) is fixed on the fixing plate (61), and the fixing plate (61) is fixed on the fixing frame (1), one end of the suction pipe (62) is connected to the external negative pressure device, and the other end of the suction pipe (62) has the suction hole (601).

9. The battery tab cutting device according to any one of claims 1 to 6, characterized in that: The battery tab cutting device further comprises a clamping assembly (5), wherein the clamping assembly (5) comprises a first clamping arm (51) and a second clamping arm (52) which are arranged at intervals, wherein a processing area for the battery (100) to pass through is defined between the first clamping arm (51) and the second clamping arm (52), and the first clamping arm (51) and the second clamping arm (52) can move towards each other to cooperate in clamping the battery (100), or can move away from each other to release the battery (100).

10. The battery tab cutting device according to claim 9, characterized in that: The clamping assembly (5) further comprises a linear slide rail (53), wherein the linear slide rail (53) is fixedly mounted on the fixing frame (1), and the first clamping arm (51) and the second clamping arm (52) are slidably mounted on the linear slide rail (53).

11. The battery tab cutting device according to claim 10, characterized in that: The clamping assembly (5) further comprises at least one elastic member (56), one end of the at least one elastic member (56) being fixedly arranged, and the other end of the at least one elastic member (56) being connected to the first clamping arm (51) or the second clamping arm (52).

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