Tab flattening device and winding equipment

Abstract

The utility model relates to the technical field of battery cell manufacturing, and discloses a tab flattening device and winding equipment, the tab flattening device comprises a mounting rack; the first tab flattening mechanism comprises a first driving unit rotationally connected to the mounting frame and a first flattening assembly connected to the first driving unit, and the first driving unit is used for driving the first flattening assembly to rotate; and the second tab flattening mechanism comprises a second driving unit connected to the mounting frame and a second flattening assembly connected to the second driving unit, and the second driving unit is used for driving the second flattening assembly to move in the first direction. The tab flattening device has the beneficial effects that the problems of tab folding and tab interpolation can be effectively solved, the production efficiency is improved, the tab flattening device can be suitable for flattening positive and negative tabs with different included angles, the universality is high, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery cell manufacturing technology, and in particular to an electrode smoothing device and a winding equipment. Background Technology

[0002] With the rapid development of lithium batteries, there are higher requirements for battery production efficiency and product quality. In the battery manufacturing process, the cell winding process is an important one. When the incoming material of the tab is in an abnormal state such as crescent (i.e. the edge of the tab is crescent-shaped or irregular), it will cause problems such as tab folding and tab insertion at the winding needle during winding, which will affect the safety performance of the cell and reduce production efficiency.

[0003] Furthermore, existing square lithium battery winding equipment uses a single flat plate mechanism at the winding needle for smoothing, which cannot effectively smooth the positive and negative tabs on the winding needle during the winding process. Additionally, for different specifications of lithium batteries, the angle between the positive and negative tabs varies, and existing tab smoothing mechanisms are not suitable for smoothing positive and negative tabs with different angle settings, resulting in poor versatility and higher production costs. Utility Model Content

[0004] The purpose of this invention is to provide a tab smoothing device and winding equipment, which can effectively solve the problems of tab folding and tab insertion, improve production efficiency, and be applicable to the smoothing of positive and negative tabs with different included angles, with strong versatility and reduced production costs.

[0005] To achieve the above objectives, this utility model provides an electrode smoothing device, including a mounting bracket;

[0006] A first electrode smoothing mechanism includes a first drive unit rotatably connected to the mounting bracket, and a first smoothing component connected to the first drive unit, wherein the first drive unit drives the first smoothing component to rotate; and

[0007] The second electrode smoothing mechanism includes a second drive unit connected to the mounting bracket and a second smoothing component connected to the second drive unit. The second drive unit is used to drive the second smoothing component to move in a first direction.

[0008] In a further embodiment, the first smoothing component includes:

[0009] A connector, rotatably connected to the mounting bracket and movably connected to the first drive unit; the axis of rotation of the connector relative to the mounting bracket is parallel to the first direction; and

[0010] A first flat plate is connected to the connector and is used to drive the first flat plate on the connector to rotate around the rotation axis via the first drive unit.

[0011] In a further embodiment, the mounting bracket is provided with a mounting base;

[0012] The connector includes:

[0013] A first rotating shaft passes through the mounting base and is rotatably connected to it. The axis of the first rotating shaft is parallel to the first direction. One end of the first rotating shaft is connected to the first flat plate, which is used to rotate about the axis of the first rotating shaft.

[0014] A first connecting block, one end of which is sleeved and fixed to the other end of the first rotating shaft, and the other end of which is movably connected to the first driving unit.

[0015] In a further embodiment, the first smoothing plate includes a guide portion, an arc-shaped segment, and a smoothing portion connected in sequence, the smoothing portion being used to smooth the sidewall of the first electrode tab.

[0016] The first flat plate also includes a connecting portion, wherein the two opposite sides of the arc segment are a raised arc surface and a concave arc surface, and the connecting portion is located on the side of the guide portion near the concave arc surface.

[0017] In a further embodiment, the second smoothing component includes a second connecting block, a connecting shaft, and a second smoothing plate;

[0018] One end of the second connecting block is fixedly connected to the output end of the second drive unit, the connecting shaft is detachably connected to the other end of the second connecting block, the second flat plate is connected to the end of the connecting shaft away from the second connecting block, and the axial direction of the connecting shaft is parallel to the first direction.

[0019] In a further embodiment, the other end of the second connecting block is provided with a mounting hole in the first direction, the connecting shaft passes through the mounting hole, and the second connecting block is provided with a locking screw that cooperates with the mounting hole to fix the connecting shaft.

[0020] In a further embodiment, the second connecting block has an opening at one end near the mounting hole that communicates with the mounting hole. The opening cooperates with the mounting hole to form a clamping cavity for fitting over the connecting shaft. The locking screw passes through the two opposite ends of the opening to fix the connecting shaft.

[0021] In a further embodiment, a linear motion component is also included, the output end of which is connected to the mounting bracket. The linear motion component is used to drive the mounting bracket to move in a second direction, wherein the first direction is perpendicular to the second direction.

[0022] The linear motion assembly includes a support plate and a drive motor, a lead screw unit, and a linear guide rail disposed on the support plate. The output end of the drive motor is connected to the lead screw unit extending in the second direction. The lead screw unit is symmetrically provided on both sides with linear guide rails extending in the second direction. The mounting bracket is fixedly connected to the lead screw nut seat of the lead screw unit and the slider of the linear guide rail.

[0023] In a further embodiment, the mounting frame is provided with multiple film-coating guide rollers, which extend in a second direction and are spaced apart in the first direction, for guiding the diaphragm through the needle at the winding needle.

[0024] This utility model also provides a winding device, including the tab smoothing device described in any of the above claims, and a winding needle. The winding needle rotates about the first direction as the axis of rotation, and is used to drive the first electrode and the second electrode to be wound on the winding needle. The first electrode is provided with a first tab, and the second electrode is provided with a second tab.

[0025] The first driving unit can drive the first smoothing component to rotate around the first direction as the rotation axis to the first station for smoothing the first tab;

[0026] The second drive unit can drive the second smoothing component to move in the first direction to the second station to smooth the second tab.

[0027] Compared with the prior art, the tab smoothing device and winding equipment of this utility model have the following advantages: It is equipped with a first tab smoothing mechanism and a second tab smoothing mechanism, which are used to smooth the first tab and the second tab respectively, ensuring the smoothing effect and avoiding problems such as tab folding and tab insertion. A first drive unit can drive the first smoothing component to rotate. Simultaneously, a second drive unit is connected to the second smoothing component. When the angle between the first tab and the second tab changes, the rotation angle of the first smoothing component and the assembly position of the second smoothing component and the second drive unit can be adjusted. This allows for smoothing of first and second tabs with different angle settings, providing strong versatility and reducing production costs. Furthermore, the second drive unit can drive the second smoothing component to move in a first direction, facilitating the movement of the second smoothing component away from the winding needle after the battery cell is wound, and making it easier to load and unload the battery cell. Attached Figure Description

[0028] Figure 1This is a reference diagram showing the working state of the tab smoothing device according to an embodiment of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the tab smoothing device according to an embodiment of the present invention;

[0030] Figure 3 This is a structural schematic diagram of the tab smoothing device according to another perspective of this utility model embodiment;

[0031] Figure 4 This is a schematic diagram of the installation of the first drive unit of the tab smoothing device according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the installation of the second drive unit of the tab smoothing device according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the first smoothing component of the tab smoothing device according to an embodiment of this utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the first smoothing plate of the electrode smoothing device according to an embodiment of this utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the second connecting block of the tab smoothing device according to an embodiment of the present invention.

[0036] In the diagram, 1. Linear motion assembly; 11. Support plate; 12. Drive motor; 13. Lead screw unit; 131. Lead screw nut seat; 14. Linear guide rail; 2. Mounting bracket; 21. Mounting seat; 22. Film guiding roller; 23. Connecting seat; 3. First drive unit; 4. First smoothing assembly; 41. Connecting piece; 411. First connecting block; 412. First rotating shaft; 42. First smoothing plate; 421. Connecting part; 422. Guide part; 4221. 42211, Arc-shaped segment; 42212, Concave arc-shaped surface; 423, Smoothing part; 5, Second drive unit; 6, Second smoothing assembly; 61, Second connecting block; 610, Clamping cavity; 611, Mounting hole; 612, Opening; 62, Connecting shaft; 63, Second smoothing plate; a, Coiling needle; b, First pole piece; b1, First pole tab; c, Second pole piece; c1, Second pole tab; d, Diaphragm; X, First direction; Y, Second direction. Detailed Implementation

[0037] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer" and other terms used in this utility model to indicate the orientation or positional relationship are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device and element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0040] like Figures 1 to 8 As shown, a preferred embodiment of the present invention provides an electrode smoothing device, comprising a mounting frame 2, a first electrode smoothing mechanism, and a second electrode smoothing mechanism. (See reference...) Figure 1 The first electrode smoothing mechanism includes a first drive unit 3 rotatably connected to the mounting bracket 2, and a first smoothing component 4 connected to the output end of the first drive unit 3. The first drive unit 3 drives the first smoothing component 4 to rotate, and the direction of its rotation axis is parallel to the first direction X. In this embodiment, see reference... Figure 1 , Figure 4 The width direction of the first unit is defined as the first direction X. The second electrode smoothing mechanism includes a second drive unit 5 connected to the mounting bracket 2 and a second smoothing component 6 detachably connected to the output end of the second drive unit 5. The second drive unit 5 is used to drive the second smoothing component 6 to move in the first direction X. When the included angle between the first electrode b1 and the second electrode c1 changes, the rotation angle of the first smoothing component 4 and the assembly position of the second smoothing component 6 and the second drive unit 5 can be adjusted. This allows for smoothing of the first electrode b1 and the second electrode c1 with different included angles, providing strong versatility and reducing production costs.

[0041] It should be noted that the first electrode smoothing mechanism and the second electrode smoothing mechanism are used to smooth one of the positive or negative electrodes. In one embodiment, the first electrode smoothing mechanism is used to smooth the positive electrode, and the second electrode smoothing mechanism is used to smooth the negative electrode. In other embodiments, the first electrode smoothing mechanism can be used to smooth the negative electrode, and the second electrode smoothing mechanism can be used to smooth the positive electrode. The adjustment can be made according to the arrangement of the positive and negative electrodes at the winding needle a.

[0042] In some embodiments, for the convenience of setting the first smoothing component 4, see [reference]. Figures 2 to 5The first smoothing component 4 includes a connector 41 and a first smoothing plate 42. The connector 41 is rotatably connected to the mounting frame 2 and movably connected to the output end of the first drive unit 3. The axis of rotation of the connector 41 relative to the mounting frame 2 is parallel to the first direction X. The first smoothing plate 42 is connected to the connector 41 and is used to drive the first smoothing plate 42 on the connector 41 to rotate around the axis of rotation via the first drive unit 3, thereby smoothing the first tab b1. When it is necessary to adjust the smoothing angle of the first tab b1, the rotation angle of the first smoothing plate 42 on the connector 41 can be controlled by the first drive unit 3.

[0043] In some embodiments, to facilitate the design of the connector 41 structure, reduce the number of parts, and decrease the transmission error between the first drive unit 3 and the first flat plate 42, the connector 41 includes a first rotating shaft 412 and a first connecting block 411. The mounting bracket 2 is provided with a mounting seat 21 for supporting the first rotating shaft 412. Specifically, refer to... Figure 5 , Figure 6 The first rotating shaft 412 passes through the mounting base 21 and is rotatably connected to the mounting base 21. The axis of the first rotating shaft 412 is parallel to the first direction X. One end of the first rotating shaft 412 is connected to the first flat plate 42. One end of the first connecting block 411 is sleeved and fixed to the other end of the first rotating shaft 412. The other end of the first connecting block 411 is movably connected to the output end of the first driving unit 3. The first driving unit 3 drives the first connecting block 411 to rotate, thereby driving the first rotating shaft 412 to rotate, and then driving the first flat plate 42 to rotate around the axis of the first rotating shaft 412 and contact and flatten with the first tab b1.

[0044] In some embodiments, to facilitate the arrangement and selection of the first drive unit 3, such as... Figure 6 As shown, the first drive unit 3 is a cylinder, which is rotatably connected to the mounting bracket 2. Specifically, the end of the cylinder facing away from the output end is rotatably connected to the connecting seat 23 on the mounting bracket 2, and the output section of the cylinder is rotatably connected to the first connecting block 411. The rotation angle of the first flat plate 42 can be controlled by controlling the stroke of the cylinder output end.

[0045] In some embodiments, the first smoothing plate 42 contacts and smooths the first electrode lug b1. To facilitate its connection with the first rotating shaft 412 and to guide the first electrode lug b1 during winding, the first smoothing plate 42 includes a guide portion 422, an arc-shaped segment 4221, and a smoothing portion 423 connected in sequence. The smoothing portion 423 is used to contact and smooth the sidewall of the first electrode lug b1, the guide portion 422 is used to guide the first electrode lug b1 and the smoothing portion 423 during contact, and the arc-shaped segment 4221 is used for a smooth transition between the guide portion 422 and the smoothing portion 423. The first smoothing plate 42 also includes a connecting portion 421 for connecting with the first rotating shaft 412. The opposite sides of the arc-shaped segment 4221 are a convex arc surface 42211 and a concave arc surface 42212, respectively. The connecting portion 421 is located on the side of the guide portion 422 near the concave arc surface 42212. In this embodiment, the first rotating shaft 412 and the connecting part 421 are fixedly connected by screws. In order to facilitate the installation and positioning between the first rotating shaft 412 and the connecting part 421, the end of the first rotating shaft 412 is provided with a positioning plane, which can fit against the side wall of the connecting part 421.

[0046] In some embodiments, to facilitate the detachable connection between the second smoothing component 6 and the second drive unit 5, and to facilitate adjustment of the installation position, the second smoothing component 6 includes a second connecting block 61, a connecting shaft 62, and a second smoothing plate 63. One end of the second connecting block 61 is fixedly connected to the output end of the second drive unit 5, the connecting shaft 62 is detachably connected to the other end of the second connecting block 61, and the second smoothing plate 63 is connected to the end of the connecting shaft 62 opposite to the second connecting block 61. The axis of the connecting shaft 62 is parallel to the first direction X. Since the connecting shaft 62 is detachably connected to the second connecting block 61, rotating the connecting shaft 62 can adjust the angle between the second smoothing plate 63 and the second tab c1. In this embodiment, the second smoothing plate 63 has the same structure as the first smoothing plate 42; therefore, its structure will not be described in detail.

[0047] Specifically, see Figure 5 , Figure 8The other end of the second connecting block 61 has a mounting hole 611 in the first direction X. The connecting shaft 62 passes through the mounting hole 611. The second connecting block 61 has a locking screw that cooperates with the mounting hole 611 to fix the connecting shaft 62. Further, to facilitate disassembly and rotation of the connecting shaft 62, the second connecting block 61 has an opening 612 at one end near the mounting hole 611, communicating with the mounting hole 611. The opening 612 and the mounting hole 611 cooperate to form a clamping cavity 610 for fitting over the connecting shaft 62. The locking screw passes through both opposite ends of the opening 612 to fix the connecting shaft 62. That is, when it is necessary to adjust the angle between the second flat plate 63 and the second pole lug c1, loosen the locking screw, rotate the connecting shaft 62 to adjust to the required angle, and tighten the locking screw. This facilitates easy disassembly and assembly. In this embodiment, the second drive unit 5 also uses a cylinder, which can be directly purchased, reducing design and installation difficulty.

[0048] In some embodiments, as the thickness of the battery cell continuously increases during winding by the winding needle a, the stacking thickness of the first electrode b and the second electrode c increases. To facilitate application even when the thickness of the first electrode b and the second electrode c increases, the tab smoothing device provided by this utility model can still achieve the smoothing function. (See reference...) Figure 1 , Figure 2 As shown, it also includes a linear motion component 1, wherein the output end of the linear motion component 1 is connected to a mounting bracket 2, and the linear motion component 1 is used to drive the mounting bracket 2 to move in the second direction Y, wherein the first direction X is perpendicular to the second direction Y. In this embodiment, see reference Figure 1 The conveying direction of the linear motion component 1 is defined as the second direction Y.

[0049] In some embodiments, see Figure 1 It can be seen that in the second direction Y, the first smoothing component 4 is located on one side of the first tab b1, and the second smoothing component 6 is located on the other side of the first tab b1, and is also located close to the second tab c1. When the thickness of the first tab b1 and the second tab c1 increases, the first smoothing component 4 and the second smoothing component 6 move away from the winding needle a under the drive of the linear motion component 1, so as to meet the smoothing requirements when the thickness of the tab increases. After the battery cell is wound, the second drive unit 5 drives the second smoothing component 6 to move away from the winding needle a, and the linear motion component 1 simultaneously drives the first tab mechanism and the second tab smoothing mechanism to move away from the winding needle a, which can facilitate the unloading of the battery cell and the loading of the next battery cell at the same time, avoiding interference with the loading and unloading process of the battery cell.

[0050] Specifically, to facilitate the configuration of the linear motion assembly 1, in this embodiment, the linear motion assembly 1 includes a support plate 11 and a drive motor 12, a lead screw unit 13, and a linear guide rail 14 mounted on the support plate 11. The output end of the drive motor 12 is connected to the lead screw unit 13 extending in the second direction Y. The lead screw unit 13 has symmetrically arranged linear guide rails 14 extending in the second direction Y on both sides. The mounting frame 2 is fixedly connected to the lead screw nut seat 131 of the lead screw unit 13 and the slider of the linear guide rail 14. That is, when the drive motor 12 operates, it drives the lead screw nut seat 131 on the lead screw unit 13 to move in the second direction Y, thereby driving the mounting frame 2 to move. The linear guide rail 14 guides the mounting frame 2 when it moves in the second direction Y.

[0051] In some embodiments, during the winding process of the battery cell, since multiple layers of separators d are stacked, in order to facilitate the needle guidance of the separators d at the winding needle a and to achieve film bonding, the ends of the multiple layers of separators d need to be wound on the winding needle a. (See reference...) Figure 1 Multiple film guide rollers 22 are provided on the mounting frame 2. The multiple film guide rollers 22 extend in the second direction Y and are spaced apart in the first direction X, for guiding the diaphragm d through the needle at the winding needle a.

[0052] This utility model also provides a winding device for winding battery cells, see reference. Figure 1 The device includes the aforementioned tab smoothing device, and also includes a winding needle a. The winding needle a rotates about a first direction X as its rotation axis, driving the diaphragm d, the first electrode b, and the second electrode c to wind onto the winding needle a. The first electrode b has a first tab b1, and the second electrode c has a second tab c1. The first driving unit 3 drives the first smoothing component 4 to rotate about the first direction X as its rotation axis to a first station to smooth the first tab b1. The second driving unit 5 drives the second smoothing component 6 to move about the first direction X to a second station to smooth the second tab c1. After the cell winding process is completed, the second driving unit 5 drives the second smoothing component 6 to move away from the winding needle a about the first direction X, and the first driving unit 3 drives the first tab b1 smoothing component to reset, facilitating the unloading of the cell and simultaneously feeding the next cell into the winding process.

[0053] In summary, this utility model embodiment provides a tab smoothing device and a winding equipment, comprising a first tab smoothing mechanism and a second tab smoothing mechanism, respectively used to smooth the first tab b1 and the second tab c1, ensuring smoothing effect and avoiding problems such as tab folding and tab insertion. The first drive unit 3 can drive the first smoothing component 4 to rotate. Simultaneously, the second drive unit 5 is connected to the second smoothing component 6. When the included angle between the first tab b1 and the second tab c1 changes, the rotation angle of the first smoothing component 4 and the assembly position of the second smoothing component 6 and the second drive unit 5 can be adjusted. This allows for smoothing of the first tab b1 and the second tab c1 with different included angles, providing strong versatility and reducing production costs. Furthermore, the second drive unit 5 can drive the second smoothing component 6 to move in the first direction X, facilitating the movement of the second smoothing component 6 away from the winding needle a after the battery cell is wound, making it easier to load and unload the battery cell.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A tab smoothing device, characterized in that: Including mounting bracket (2); The first electrode smoothing mechanism includes a first drive unit (3) rotatably connected to the mounting bracket (2) and a first smoothing component (4) connected to the first drive unit (3). The first drive unit (3) is used to drive the first smoothing component (4) to rotate. as well as The second electrode smoothing mechanism includes a second drive unit (5) connected to the mounting bracket (2) and a second smoothing component (6) connected to the second drive unit (5). The second drive unit (5) is used to drive the second smoothing component (6) to move in a first direction (X).

2. The tab smoothing device as described in claim 1, characterized in that: The first smoothing component (4) includes: A connector (41) rotatably connected to the mounting bracket (2) and movably connected to the first drive unit (3), wherein the axis of rotation of the connector (41) relative to the mounting bracket (2) is parallel to the first direction (X); and The first flat plate (42) is connected to the connector (41) and is used to drive the first flat plate (42) on the connector (41) to rotate around the rotation axis via the first drive unit (3).

3. The tab smoothing device as described in claim 2, characterized in that: The mounting bracket (2) is provided with a mounting base (21); The connector (41) includes: A first rotating shaft (412) passes through the mounting base (21) and is rotatably connected to the mounting base (21). The axis of the first rotating shaft (412) is parallel to the first direction (X). One end of the first rotating shaft (412) is connected to the first flat plate (42), which is used to rotate about the axis of the first rotating shaft (412). The first connecting block (411) has one end sleeved and fixed to the other end of the first rotating shaft (412), and the other end of the first connecting block (411) is movably connected to the first driving unit (3).

4. The tab smoothing device as described in claim 2, characterized in that: The first smoothing plate (42) includes a guide portion (422), an arc segment (4221), and a smoothing portion (423) connected in sequence. The smoothing portion (423) is used to smooth the side wall of the first electrode (b1). The first flat plate (42) further includes a connecting part (421), and the two sides of the arc segment (4221) are a raised arc surface (42211) and a concave arc surface (42212), respectively. The connecting part (421) is located on the side of the guide part (422) near the concave arc surface (42212).

5. The tab smoothing device as described in claim 1, characterized in that: The second smoothing component (6) includes a second connecting block (61), a connecting shaft (62), and a second smoothing plate (63); One end of the second connecting block (61) is fixedly connected to the output end of the second driving unit (5), the connecting shaft (62) is detachably connected to the other end of the second connecting block (61), the second flat plate (63) is connected to the end of the connecting shaft (62) away from the second connecting block (61), and the axial direction of the connecting shaft (62) is parallel to the first direction (X).

6. The tab smoothing device as described in claim 5, characterized in that: The other end of the second connecting block (61) has a mounting hole (611) in the first direction (X), and the connecting shaft (62) passes through the mounting hole (611). The second connecting block (61) is provided with a locking screw that cooperates with the mounting hole (611) to fix the connecting shaft (62).

7. The tab smoothing device as described in claim 6, characterized in that: The second connecting block (61) has an opening (612) at one end near the mounting hole (611) that communicates with the mounting hole (611). The opening (612) and the mounting hole (611) cooperate to form a clamping cavity (610) for sleeved on the connecting shaft (62). The locking screw passes through the two opposite ends of the opening (612) to fix the connecting shaft (62).

8. The tab smoothing device according to any one of claims 1 to 7, characterized in that: It also includes a linear motion component (1), the output end of which is connected to the mounting frame (2). The linear motion component (1) is used to drive the mounting frame (2) to move in a second direction (Y), where the first direction (X) is perpendicular to the second direction (Y). The linear motion assembly (1) includes a support plate (11) and a drive motor (12), a lead screw unit (13) and a linear guide rail (14) disposed on the support plate (11). The output end of the drive motor (12) is connected to the lead screw unit (13) extending in the second direction (Y). The lead screw unit (13) is symmetrically provided with linear guide rails (14) extending in the second direction (Y) on both sides. The mounting bracket (2) is fixedly connected to the lead screw nut seat (131) of the lead screw unit (13) and the slider of the linear guide rail (14).

9. The tab smoothing device as described in claim 1, characterized in that: The mounting frame (2) is provided with multiple film-coating guide rollers (22), which extend in the second direction (Y) and are spaced apart in the first direction (X) to guide the diaphragm (d) through the needle (a).

10. A winding device, characterized in that: The electrode smoothing device as described in any one of claims 1 to 9 further includes a winding needle (a), which rotates about the first direction (X) as the axis of rotation to drive the first electrode (b) and the second electrode (c) to be wound around the winding needle (a), wherein the first electrode (b) is provided with a first electrode tab (b1) and the second electrode (c) is provided with a second electrode tab (c1); The first drive unit (3) can drive the first smoothing component (4) to rotate around the first direction (X) as the rotation axis to the first work position for smoothing the first tab (b1); The second drive unit (5) can drive the second smoothing component (6) to move in the first direction (X) to the second station to smooth the second tab (c1).

Images