Tab folding device and battery cell winding equipment

Abstract

The utility model discloses a tab folding device and battery cell winding equipment, and the tab folding device comprises an air blowing assembly which comprises a mounting part and an air blowing part connected with the mounting part, and the air blowing part is used for blowing a tab of a battery cell to be bent towards the axis of the battery cell; and in the axis direction of the battery cell, the distance between the air blowing port of the air blowing piece and the tab of the battery cell is smaller than the distance between the mounting piece and the tab of the battery cell. According to the invention, the detection mechanism can be prevented from being blocked by the mounting piece, so that a good material belt alignment degree detection effect is obtained.

Description

Technical Field

[0001] The present application relates to the field of battery production equipment, and specifically to a tab folding device and a battery cell winding device. Background Art

[0002] During battery production, a winding needle rotates to wind the material strip (including the diaphragm and electrode) to form a battery cell. During the winding process, a blowing assembly is used to blow the battery cell's tabs toward the cell's axis to bend them. A detection mechanism, such as a camera, is also required to monitor the alignment of the electrode during the winding process. However, existing blowing assemblies often have poor design, which can block the detection mechanism's field of view, resulting in poor detection results. Utility Model Content

[0003] One purpose of the present application is to provide a new technical solution for a tab folding device and a battery cell winding device.

[0004] To achieve the above-mentioned purpose, according to the first aspect of the present application, a folding tab device is provided, comprising: a blowing assembly, the blowing assembly comprising a mounting member and a blowing member connected to the mounting member, the blowing member being used to blow the tab of the battery cell to bend toward the axis of the battery cell; in the axial direction of the battery cell, the distance between the blowing port of the blowing member and the tab of the battery cell is smaller than the distance between the mounting member and the tab of the battery cell.

[0005] Optionally, the folding tab device further includes a detection mechanism, which is used to detect the alignment of the material strip during the winding process of the battery cell. In the axial direction of the battery cell, the detection mechanism is located between the two mounting parts.

[0006] Optionally, the blowing member and the mounting member are an integrated structure, the mounting member is communicated with the blowing member, and the air supply mechanism supplies air to the blowing member through the mounting member.

[0007] Optionally, the blowing member is rotatably connected to the mounting member so that the angle between the blowing direction of the blowing port and the axial direction of the battery core can be adjusted.

[0008] Optionally, the angle between the blowing direction of the blowing port and the axis direction of the battery core can form an acute angle.

[0009] Optionally, the mounting member is provided with a plurality of first reference lines, and the blowing member is provided with a second reference line, and when the blowing member rotates relative to the mounting member, the second reference line can be aligned with one of the plurality of first reference lines.

[0010] Optionally, in a first direction, the air outlet protrudes from the mounting member; and the first direction intersects with the axial direction of the battery core.

[0011] Optionally, the blowing port is a round hole or a long hole.

[0012] Optionally, the folding lug device further comprises:

[0013] a first driving member;

[0014] a first mounting seat, the first mounting seat being connected to the first driving member, and the first driving member being capable of driving the first mounting seat toward or away from the battery cell in a second direction;

[0015] a second mounting seat, the second mounting seat being in sliding engagement with the first mounting seat, the blowing assembly being mounted on the second mounting seat;

[0016] a second driving member connected to the second mounting seat, and capable of driving the second mounting seat to move relative to the first mounting seat in a second direction, so that the blowing assembly moves closer to or away from the battery cell;

[0017] The second direction intersects with the axis direction of the battery cell and the first direction in pairs.

[0018] Optionally, during the winding process of the battery cell, in the second direction, the first driving member can drive the first mounting seat to move in a direction away from the axis of the battery cell.

[0019] Optionally, the folding ear device also includes a first pressure roller, a cutter, and a second pressure roller. The first pressure roller, the cutter and the second pressure roller are respectively slidably matched with the first mounting seat. The first mounting seat is equipped with a first pressure roller drive, a second pressure roller drive and a cutter drive. In the second direction, the first pressure roller drive is used to drive the first pressure roller close to or away from the material strip of the battery cell, the second pressure roller drive is used to drive the second pressure roller close to or away from the material strip of the battery cell, and the cutter drive is used to drive the cutter close to or away from the material strip of the battery cell.

[0020] According to a second aspect of the present application, a battery cell winding device is also provided, comprising a tab folding device as described in any one of the above items.

[0021] In the tab folding device of the embodiment of the present application, the distance between the blowing port of the blowing member and the tab of the battery cell is smaller than the distance between the mounting member and the tab of the battery cell in the axial direction of the battery cell. This makes the mounting member farther away from the tab to be blown than the blowing port. This allows more space to be reserved for the detection mechanism, preventing the mounting member from blocking the detection mechanism, thereby achieving better strip alignment detection results. The battery cell winding equipment of the embodiment of the present application can achieve a higher battery cell yield rate due to the use of the aforementioned tab folding device.

[0022] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0024] Figure 1 It is a three-dimensional diagram of the folding ear device of the first embodiment of the present application.

[0025] Figure 2 It is a three-dimensional diagram of the blowing assembly of the first embodiment of the present application.

[0026] Figure 3 It is a three-dimensional diagram of the blowing assembly of the second embodiment of the present application.

[0027] Figure 4 yes Figure 3 A partial enlarged view of part A in FIG.

[0028] Figure 5 It is a right view of the blowing assembly of the second embodiment of the present application.

[0029] Figure 6 This is a front view of the folding ear device of the first embodiment of the present application.

[0030] Figure 7 This is a right view of the folding ear device of the first embodiment of the present application.

[0031] Figure 8 It is a top view of the folding ear device of the first embodiment of the present application.

[0032] Figure 9 This is a right view of the battery cell winding device of the first embodiment of the present application, in which the battery cell is at the winding station.

[0033] Figure 10 This is a right view of the battery cell winding equipment of the first embodiment of the present application, in which the battery cell is at the finishing and gluing station.

[0034] Description of reference numerals:

[0035] 1. First driving member; 2. First mounting seat; 3. Second mounting seat; 301. Adjustment hole; 4. Blowing assembly; 401. Mounting member; 402. Blowing member; 403. Blowing port; 404. First reference line; 405. Second reference line; 406. Positioning axis; 5. Second driving member; 6. Battery cell; 601. First pole piece; 602. First diaphragm; 603. Second pole piece; 604. Second diaphragm; 605. Tab; 7. Light source; 8. Mounting plate; 9. First pressure roller; 10. Cutter; 11. Second pressure roller; 12. First pressure roller driving member; 13. Second pressure roller driving member; 14. Cutter driving member; 15. Detection mechanism; 16. Turret; 17. Winding needle. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0039] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0040] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0041] In the following description, "connection" includes both a direct connection between the two and an indirect connection between the two via, for example, an adapter board, a middleware, etc.

[0042] In the following description, "material strip" is only used to illustrate the working principle of the tab folding device and the battery cell winding equipment, and should not be regarded as a part of the tab folding device and the battery cell winding equipment.

[0043] In the following description, each driving component can be driven by various power sources such as cylinders, motors, etc.

[0044] In the following description, the first direction refers to the up-down direction as shown in the accompanying drawings; the second direction refers to the front-back direction as shown in the accompanying drawings; and the third direction refers to the left-right direction as shown in the accompanying drawings, which is also the axial direction of battery cell 6. The first, second, and third directions intersect with each other. The up-down, left-right, and front-back directions shown in the accompanying drawings are all relative directions.

[0045] like Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, the present application discloses a tab folding device, including a blowing assembly 4. The blowing assembly 4 includes a mounting member 401 and a blowing member 402 connected to the mounting member, wherein the blowing member 402 is used to blow the tab 605 of the battery cell 6 toward the axis L of the battery cell 6. In the axial direction of the battery cell 6, the distance between the blowing port 403 of the blowing member 402 and the tab 605 of the battery cell 6 is smaller than the distance between the mounting member 401 and the tab 605 of the battery cell 6.

[0046] More specifically, the mounting member 401 of the blowing assembly 4 mainly supports the blowing member 402, which is connected to the air supply mechanism. The air supply mechanism supplies air to the blowing member 402, so that the blowing port 403 of the blowing member 402 can blow air toward the tab 605 of the battery cell 6, causing the tab 605 to bend toward the axis L of the battery cell 6. Figure 8 In more detail, it can be seen that in this embodiment, two blowing assemblies 4 are used, respectively located on the left and right sides of the battery cell 6. In the direction of the axis L of the battery cell 6 (i.e., the third direction, or the left-right direction), the blowing port 403 of the blowing assembly 4 on the left is closer to the left tab 605 of the battery cell 6 than the mounting member 401 of the blowing assembly 4 on the left. Similarly, the blowing port 403 of the blowing assembly 4 on the right is closer to the right tab 605 of the battery cell 6 than the mounting member 401 of the blowing assembly 4 on the right. In other words, in the third direction, the two blowing ports 403 are located between the two mounting members 401. The advantage of this structure is that the mounting member 401 is further away from the tab 605 than the blowing port 403, so the mounting member 401 will not block the field of view of the detection mechanism 15, thereby obtaining a better detection effect. The blowing assembly 4 can also be used in a single manner, with the tab 605 on the left or right side of the battery cell 6 bent toward the axis L of the battery cell 6.

[0047] like Figure 6 、 Figure 7 and Figure 8 As shown, the tab folding device of the present application further includes a detection mechanism 15. The detection mechanism 15 is used to detect the alignment of the strip during the winding process of the battery cell 6. In the axial direction of the battery cell 6, the detection mechanism 15 is located between the two mounting members 401.

[0048] More specifically, the detection mechanism 15 can use a camera, a photoelectric sensor, etc. to detect the alignment of the material strips during the winding process of the battery cell 6. When the alignment of the material strips does not meet the requirements, it indicates that there is a quality problem in the winding process of the battery cell 6. The material strips include Figure 7 The first electrode piece 601, the first diaphragm 602, the second electrode piece 603 and the second diaphragm 604 are shown. One of the first electrode piece 601 and the second electrode piece 603 is a cathode electrode piece, and the other is an anode electrode piece. The pole tab 605 is formed on the first electrode piece 601 and the second electrode piece 603. The alignment of the first electrode piece 601 and the second electrode piece 603 is very important for the yield rate of the battery cell 6, so a detection mechanism 15 is required for detection. In the embodiment of the present application, two detection mechanisms 15 are used, one for detecting the alignment of the material strip on the left side of the battery cell 6, and the other for detecting the alignment of the material strip on the right side of the battery cell 6. In the axial direction of the battery cell 6, the detection mechanism 15 is located between the two mounting parts 401. In the direction of the axis L of the battery cell 6, arranging the detection mechanism 15 between the two mounting parts 401 can better prevent the mounting part 401 from blocking the field of view of the detection mechanism 15.

[0049] like Figure 2 As shown, in the first embodiment of the present application, the blowing member 402 is an integral structure with the mounting member 401. The mounting member 401 is connected to the blowing member 402, and the air supply mechanism supplies air to the blowing member 402 through the mounting member 401.

[0050] More specifically, the mounting member 401 and the blowing member 402 can be formed into an integral structure by welding tubular members or by integrally molding, which simplifies processing. The mounting member 401 is connected to the blowing member 402, so that the air supply mechanism can supply air to the blowing member 402 through the mounting member 401, and the air is ultimately blown out from the blowing port 403. The air supply mechanism can therefore be positioned away from the battery cell 6 in the second direction, avoiding interference with the tab folding device or other structures of the battery cell winding equipment.

[0051] like Figure 3 and Figure 4 As shown, the blowing member 402 in the second embodiment of the present application is rotatably connected to the mounting member 401 so that the angle between the blowing direction of the blowing port 403 and the axial direction of the battery cell 6 can be adjusted.

[0052] More specifically, during the winding process of the battery cell 6, the battery cell 6 is also rotating while the air outlet 403 is blowing air. Therefore, the tab 605 close to the air outlet 403 is blown toward the axis L, while the tab 605 away from the air outlet 403 is blown in a direction away from the axis L (outward-turned), resulting in disordered tabs 605 and poor height. To solve such problems, the blowing assembly 4 of the second embodiment of the present application adopts a structure in which the blowing piece 402 is rotatably connected to the mounting piece 401. One embodiment of realizing the rotatable connection between the blowing piece 402 and the mounting piece 401 is that the mounting piece 401 is provided with a positioning shaft 406, the positioning shaft 406 is provided with an external spline, the blowing piece 402 is provided with a positioning hole, and the positioning hole is provided with an internal spline. By matching the internal and external splines, the angle α between the blowing direction S of the blowing port 403 and the axis L direction of the battery cell 6 can be adjusted. Another embodiment of achieving a rotational connection between the blowing member 402 and the mounting member 401 is to provide the mounting member 401 with a threaded hole, and the blowing member 402 with a through hole. A bolt is passed through the through hole and then threadedly engaged with the threaded hole. The blowing direction of the blowing port 403 is adjusted appropriately and the bolt is tightened to fix the blowing member 402. The structural advantage of this rotational connection is that, on the one hand, the blowing member 402 is easy to replace, and on the other hand, the angle of the blowing port 403 relative to the tab 605 is adjustable. The blowing angle can be adjusted according to the material difference of the battery cell 6 to prevent the airflow from blowing over the folded tab 605, thereby preventing the tab 605 from turning outward.

[0053] like Figure 3 As shown, in the second embodiment of the present application, the angle α between the blowing direction of the blowing port 403 and the axial direction of the battery core 6 can be an acute angle.

[0054] More specifically, the angle α between the blowing direction S of the blowing port 403 and the axis L of the battery cell 6 can be adjusted to an acute angle. Compared with the blowing port 403 being perpendicular to the axis L, the acute angle α can better prevent the blowing port 403 from directly blowing the tab 605, and better prevent the tab 605 on the side of the battery cell 6 away from the blowing port 403 from turning outward in the direction away from the axis L during the winding process.

[0055] like Figure 4 As shown, in the second embodiment of the present application, the mounting member 401 is provided with a plurality of first reference lines 404, and the blowing member 402 is provided with a second reference line 405. When the blowing member 402 rotates relative to the mounting member 401, the second reference line 405 can be aligned with one of the plurality of first reference lines 404.

[0056] More specifically, the first reference line 404 can extend along the second direction, and the second reference line 405 can extend along the first direction. When the angle α between the blowing direction S of the air outlet 403 and the axis L of the battery cell 6 needs to be adjusted, the blowing member 402 rotates relative to the mounting member 401. Aligning the second reference line 405 with one of the first reference lines 404 indicates that α has reached a certain value. Aligning the second reference line 405 with another first reference line 404 indicates that α has reached another value. There are at least two first reference lines 404. The provision of the first and second reference lines 404, 405, ensures consistency in the adjustment angles of the blowing member 402.

[0057] like Figure 5 and Figure 8 As shown, in the folding ear device in the embodiment of the present application, in the first direction, the blowing port 403 protrudes from the mounting member 401.

[0058] More specifically, during the winding process of the battery cell 6, the light source 7 is required to supplement the light of the battery cell 6, so as to facilitate the detection mechanism 15 to more accurately detect the alignment of the material strip of the battery cell 6. Since the detection position of the material strip is determined, the position of the light source 7 is also determined, and as shown in FIG. Figure 8 As shown, the light source 7 needs to be set at a position further to the left or right than the mounting member 401. After the blowing assembly 4 moves forward to blow air to the tab 605, the mounting member 401 is likely to block the light of the light source 7, resulting in poor detection results. Figure 5 More clearly, in the second embodiment of the present application, in the first direction, the air outlet 403 protrudes from the mounting member 401, that is, in the first direction, the air outlet 403 is located at the uppermost edge line of the mounting member 401 (e.g., Figure 5 If the air blowing assembly is rotated, the air outlet 403 will be located below the bottom edge line of the mounting member 401, which is equivalent to the mounting member 401 being able to avoid the light source 7 when the position of the light source 7 and the blowing position of the air outlet 403 remain unchanged. This prevents the mounting member 401 from blocking the light emitted by the light source 7, thereby enabling the detection mechanism 15 to obtain a good detection effect.

[0059] In the embodiment of the present application, the blowing port 403 is a circular hole or a long hole, which can improve the stability of the blowing tab 605 .

[0060] like Figure 1 、 Figure 6 、 Figure 7 and Figure 8As shown, the tab folding device in the embodiment of the present application further includes: a first driving member 1, a first mounting seat 2, a second mounting seat 3, and a second driving member 5. The first mounting seat 2 is connected to the first driving member 1, and in the second direction, the first driving member 1 can drive the first mounting seat 2 to move closer to or away from the battery cell 6; the second mounting seat 3 is slidably engaged with the first mounting seat 2, and the blowing assembly 4 is mounted on the second mounting seat 3; the second driving member 5 is connected to the second mounting seat 3, and in the second direction, the second driving member 5 can drive the second mounting seat 3 to move relative to the first mounting seat 2, so that the blowing assembly 4 moves closer to or away from the battery cell 6; the second direction intersects with the axial direction of the battery cell 6 and the first direction.

[0061] More specifically, the first driving member 1 is mounted on the mounting plate 8, which can be a separate plate or a part of the battery cell winding device. The first mounting seat 2 is connected to the first driving member 1. Taking the first driving member 1 as an example of a cylinder, the cylinder body of the cylinder is mounted on the mounting plate 8, and the movable end of the cylinder is connected to the first mounting seat 2. In the second direction, the extension and retraction of the movable end of the cylinder can drive the first mounting seat 2 closer to or away from the battery cell 6. The first driving member 1 can also drive the first mounting seat 2 by means of a motor or the like. When the first driving member 1 drives the first mounting seat 2 to move forward, the first mounting seat 2 approaches the battery cell 6. When the first driving member 1 drives the first mounting seat 2 to move backward, the first mounting seat 2 moves away from the battery cell 6. The second mounting base 3 is slidably engaged with the first mounting base 2, and the blow assembly 4 is mounted on the second mounting base 3 and moves with the second mounting base 3. The second driving member 5 is connected to the second mounting base 3. Again, using a cylinder as an example, the cylinder body is mounted on the second mounting base 3, and the movable end is mounted on the first mounting base 2. Therefore, in the second direction, the extension and retraction of the cylinder piston rod can drive the second mounting base 3 relative to the first mounting base 2, thereby moving the blow assembly 4 closer to or further away from the battery cell 6. Similarly, the second driving member 5 can also be driven by a motor or other means. When the second driving member 5 drives the second mounting base 3 forward, the blow assembly 4 approaches the battery cell 6; when the second driving member 5 drives the second mounting base 3 backward, the blow assembly 4 moves away from the battery cell 6. The second direction intersects the axis L of the battery cell 6 and the first direction. In this way, the blow assembly 4 can be moved closer to or further away from the battery cell 6 as needed, avoiding interference when the battery cell 6 is switched between different workstations.

[0062] More specifically, if Figure 1 As shown, the second mounting base 3 is provided with a plurality of adjustment holes 301 along the left and right directions. When the blowing assembly 4 is installed in different adjustment holes 301 , the left and right position of the blowing assembly 4 relative to the battery cell 6 can be changed, thereby adapting to different lengths of the battery cell 6 .

[0063] In the embodiment of the present application, during the winding process of the battery core 6 , the first driving member 1 can drive the first mounting seat 2 to move in a direction away from the axis of the battery core 6 in the second direction.

[0064] More specifically, during the winding process of the battery cell 6, as the diameter of the battery cell 6 continues to increase, the first driving member 1 drives the first mounting seat 2 to move in the direction away from the axis L of the battery cell 6. Correspondingly, the blowing assembly 4 also moves backward, so that the blowing assembly 4 always maintains a set distance from the pole ear 605 to be blown, ensuring the consistency of the bending of the pole ear 605.

[0065] like Figure 1 、 Figure 6 、 Figure 7 and Figure 8 As shown, the tab folding device in the embodiment of the present application further includes a first pressure roller 9, a cutter 10, and a second pressure roller 11. The first pressure roller 9, the cutter 10, and the second pressure roller 11 are respectively slidably matched with the first mounting seat 2. The first mounting seat 2 is equipped with a first pressure roller driver 12, a second pressure roller driver 13, and a cutter driver 14. In the second direction, the first pressure roller driver 12 is used to drive the first pressure roller 9 to approach or move away from the material strip of the battery cell 6, the second pressure roller driver 13 is used to drive the second pressure roller 11 to approach or move away from the material strip of the battery cell 6, and the cutter driver 14 is used to drive the cutter 10 to approach or move away from the material strip of the battery cell 6.

[0066] More specifically, in the second direction, the first roller driver 12 drives the first roller 9 to move forward close to the material strip of the battery cell 6, and the second roller driver 13 drives the second roller 11 to move forward close to the material strip of the battery cell 6, so that the first roller 9 and the second roller 11 clamp the first diaphragm 602 and the second diaphragm 604, and the cutter driver 14 drives the cutter to move forward close to the material strip of the battery cell 6, thereby cutting the first diaphragm 602 and the second diaphragm 604. Because the first roller 9, the cutter 10, and the second roller 11 are respectively slidably engaged with the first mounting seat 2, assuming that the first roller driver 12, the second roller driver 13, and the cutter driver 14 are stationary, the first roller 9, the second roller 11, and the cutter 10 can be driven simultaneously by the first driver 1, which can simplify the structure of the tab folding device and the battery cell winding equipment.

[0067] like Figure 9 and Figure 10 As shown in the two figures, the working process of the battery winding device of the embodiment of the present application is specifically shown. The battery winding device includes the following Figures 1 to 8 The folding ear device shown.

[0068] More specifically, if Figure 9As shown, the battery cell 6 is currently in the winding station, and the winding needle 17 on the turret 16 rotates to drive the first electrode 601, the first diaphragm 602, the second electrode 603, and the second diaphragm 604 to wind and form the battery cell 6. Before winding begins, the first driving member 1 drives the first mounting seat 2 forward, and the blowing assembly 4, the first pressure roller 9, the cutter 10, and the second pressure roller 11 also approach the battery cell 6, and the tab folding device enters the working state. Then, the second driving member 5 drives the second mounting seat 3 forward, and the blowing assembly 4 moves forward accordingly, and the blowing port 403 moves closer to the tab 605 of the battery cell 6, thereby blowing the tab 605 toward the axis L. During the winding process of the battery cell 6, the light source 7 provides supplementary light to the battery cell 6, and the detection mechanism 15 detects the alignment of the material strip of the battery cell 6. The mounting member 401 does not block the detection mechanism 15 or the light source 7, making the detection effect of the material strip alignment better. When the detection mechanism 15 detects that the material strip alignment does not meet the requirements, the position of the material strip can be adjusted in time through the correction mechanism, thereby improving the yield rate of the battery cell 6. As the battery cell 6 is wound, the diameter of the battery cell 6 continues to increase, and the first driving member 1 drives the first mounting seat 2 to move backward, and the blowing assembly 4 also moves backward, so that the blowing port 403 of the blowing assembly 4 always maintains a set distance from the tab 605 to be blown, ensuring the consistency of the bending of the tab 605.

[0069] like Figure 10 As shown, after the battery cell 6 is wound, the first drive member 1 drives the first mounting seat 2 to move backward, the turret 16 rotates, and the battery cell 6 reaches the finishing and gluing station. At this time, a section of the material strip (including the first diaphragm 602 and the second diaphragm 604) is between the finishing and gluing station and the winding station. The first pressure roller drive member 12 drives the first pressure roller 9 to move forward close to the material strip of the battery cell 6, and finally reaches the position shown by the dotted line. The second pressure roller drive member 13 drives the second pressure roller 11 to move forward close to the material strip of the battery cell 6, and finally reaches the position shown by the dotted line, so that the first pressure roller 9 and the second pressure roller 11 clamp the first diaphragm 602 and the second diaphragm 604. Then, the cutter drive member 14 drives the cutter to move forward close to the material strip of the battery cell 6, and finally reaches the position shown by the dotted line, thereby cutting the first diaphragm 602 and the second diaphragm 604. After cutting, the first pressure roller 9, the cutter 10, and the second pressure roller 11 move backward, and the winding needle 17 rotates again to finish, and then the battery cell 6 is glued. After the battery cell 6 is finished with glue, the turret 16 continues to rotate, and the battery cell 6 reaches the unloading station to complete unloading.

[0070] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0071] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A folding lug device, characterized in that: include: A blowing assembly (4), the blowing assembly (4) comprising a mounting member (401) and a blowing member (402) connected to the mounting member, the blowing member (402) being used to blow a tab (605) of a battery cell (6) to bend toward an axis of the battery cell (6); In the axial direction of the battery core (6), the distance between the blowing port (403) of the blowing member (402) and the tab (605) of the battery core (6) is smaller than the distance between the mounting member (401) and the tab (605) of the battery core (6).

2. The folding ear device according to claim 1, characterized in that: It also includes a detection mechanism (15), which is used to detect the alignment of the material strip during the winding process of the battery core (6). In the axial direction of the battery core (6), the detection mechanism (15) is located between the two mounting parts (401).

3. The folding ear device according to claim 1, characterized in that: The blowing member (402) and the mounting member (401) are an integrated structure, the mounting member (401) is communicated with the blowing member (402), and an air supply mechanism supplies air to the blowing member (402) through the mounting member (401).

4. The folding lug device according to claim 1, characterized in that: The blowing member (402) is rotatably connected to the mounting member (401), so that the angle between the blowing direction of the blowing port (403) and the axial direction of the battery core (6) can be adjusted.

5. The folding lug device according to claim 4, characterized in that: The angle between the blowing direction of the blowing port (403) and the axial direction of the battery core (6) can form an acute angle.

6. The folding lug device according to claim 4, characterized in that: The mounting member (401) is provided with a plurality of first reference lines (404), and the blowing member (402) is provided with a second reference line (405). When the blowing member (402) rotates relative to the mounting member (401), the second reference line (405) can be aligned with one of the plurality of first reference lines (404).

7. The folding lug device according to claim 1, characterized in that: In a first direction, the blowing port (403) protrudes from the mounting member (401); The first direction intersects with the axial direction of the battery core (6).

8. The folding tab device according to claim 1, characterized in that: The air blowing port (403) is a circular hole or a long hole.

9. The electrode tab folding device according to any one of claims 1 to 8, characterized in that: Also includes: A first driving member (1); a first mounting seat (2), the first mounting seat (2) being connected to the first driving member (1), and the first driving member (1) being capable of driving the first mounting seat (2) to move closer to or away from the battery cell (6) in a second direction; A second mounting seat (3), wherein the second mounting seat (3) is slidably matched with the first mounting seat (2), and the blowing assembly (4) is mounted on the second mounting seat (3); a second driving member (5), the second driving member (5) being connected to the second mounting seat (3), and the second driving member (5) being capable of driving the second mounting seat (3) to move relative to the first mounting seat (2) in a second direction, so as to move the blowing assembly (4) closer to or farther away from the battery cell (6); The second direction intersects with the axis direction of the battery core (6) and the first direction in pairs.

10. The electrode tab folding device according to claim 9, characterized in that: During the winding process of the battery core (6), in the second direction, the first driving member (1) can drive the first mounting seat (2) to move in a direction away from the axis of the battery core (6).

11. The electrode tab folding device according to claim 9, characterized in that: The invention also includes a first pressing roller (9), a cutter (10), and a second pressing roller (11). The first pressing roller (9), the cutter (10), and the second pressing roller (11) are respectively slidably matched with the first mounting seat (2). The first mounting seat (2) is equipped with a first pressing roller driving member (12), a second pressing roller driving member (13), and a cutter driving member (14). In the second direction, the first pressing roller driving member (12) is used to drive the first pressing roller (9) to approach or move away from the material belt of the battery cell (6), the second pressing roller driving member (13) is used to drive the second pressing roller (11) to approach or move away from the material belt of the battery cell (6), and the cutter driving member (14) is used to drive the cutter (10) to approach or move away from the material belt of the battery cell (6).

12. A battery core winding device, characterized in that: It comprises the folding ear device according to any one of claims 1 to 11.

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