Battery cell winding mechanism and battery cell production equipment

Abstract

The utility model relates to the technical field of battery production equipment, in particular to a battery cell winding mechanism and battery cell production equipment. The battery cell winding mechanism comprises a winding needle assembly, a winding needle seat, an insertion sheet, a mounting seat insertion sheet, an insertion sheet moving seat and an insertion sheet driving mechanism; the insertion sheet and the winding needle assembly are arranged in parallel at an interval; the insertion piece moving seat is movably arranged on the insertion piece mounting seat along the extension direction of the insertion piece; and the insertion sheet driving mechanism is used for driving the insertion sheet moving seat to move relative to the insertion sheet mounting seat so as to realize extension and retraction of the insertion sheet. One end of the winding needle assembly is movably arranged on the winding needle base, the other end of the winding needle assembly is inserted into a winding needle insertion nozzle of the insertion piece installation base, one end of the insertion piece is arranged on the insertion piece moving base in a floating mode, and the insertion piece moving base is arranged on the insertion piece installation base. In this way, the winding needle assembly and the insertion piece are installed on the winding needle base and the insertion piece installation base respectively, the requirement for the bearing capacity of the winding needle base is lowered, and therefore the requirement for the material of the winding needle base can be lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a battery core winding mechanism and battery core production equipment. Background Art

[0002] The cell winding mechanism is used to wind the positive electrode sheet, the negative electrode sheet and the separator into a cell. After the cell is wound, it is easy to deform in the subsequent heating, liquid injection and other processes, which affects the quality of the battery. In order to improve the problem of cell deformation, at present, in the process of winding the cell by the cell winding mechanism, a process of inserting a sheet is usually added, so that the insert sheet parallel to the winding needle is inserted into the winding cell position. After the cell is wound, the insert sheet is separated from the cell, and a gap is formed at the position of the insert sheet. The gap can be used to release the tension of the cell, so that the cell is not easily deformed in the subsequent process. However, the current insert sheet mechanism is usually installed in the winding needle shaft. For example, the Chinese patent with the authorization announcement number CN216793772U discloses a cell winding device. Since the length of the winding needle and the insert sheet are relatively long, the insert sheet mechanism is installed in the winding needle seat, which requires a high load-bearing capacity of the winding needle seat. The winding needle seat needs to be made of a high-strength material, and the production cost of this winding needle seat is high. Utility Model Content

[0003] The utility model provides a battery core winding mechanism, which is used to improve the problem in the current winding mechanism that the strength requirement of the winding needle seat is high because the inserting sheet and the winding needle are arranged on the winding needle seat.

[0004] In addition, the purpose of the utility model is also to provide a battery cell production device using the above-mentioned battery cell winding mechanism.

[0005] According to the first aspect, an embodiment provides a battery cell winding mechanism, comprising:

[0006] A winding needle assembly, the winding needle assembly is used for winding the battery core;

[0007] A needle winding seat, on which the needle winding assembly is movably arranged;

[0008] An insert sheet mounting seat, wherein the insert sheet mounting seat has a needle winding nozzle for inserting the needle winding assembly;

[0009] An insert sheet, the insert sheet is used to be inserted into the winding cell position, and the insert sheet is arranged parallel to and spaced from the winding needle assembly after being inserted into the winding cell position;

[0010] An insert moving seat, one end of the insert is an insert mounting end floatingly arranged on the insert moving seat, and the insert moving seat is movably arranged on the insert mounting seat along the extending direction of the insert;

[0011] And a plug-in driving mechanism, the plug-in driving mechanism is used to drive the plug-in moving seat to move relative to the plug-in mounting seat to achieve the extension and retraction of the plug-in.

[0012] Furthermore, in one embodiment, the insert mounting seat includes a mounting hollow shaft, the extension direction of the mounting hollow shaft is consistent with the extension direction of the insert, and the insert movable seat is movably configured in the mounting hollow shaft.

[0013] Furthermore, in one embodiment, the insert mounting seat includes an ejector seat, the winding needle nozzle is located on the ejector seat, a ejector for plugging into the winding needle assembly is fixed in the winding needle nozzle, the mounting hollow shaft is fixed on the side of the ejector seat facing away from the winding needle assembly, and the insert passes through the ejector seat.

[0014] Furthermore, in one embodiment, the insert movable seat is connected to a connecting rod, the connecting rod extends out of one end of the mounting hollow shaft facing away from the winding needle assembly, the connecting rod is connected to the insert driving mechanism, and the insert driving mechanism drives the insert movable seat via the connecting rod.

[0015] Furthermore, in one embodiment, the connecting rod is movably connected to the insert movable seat.

[0016] Furthermore, in one embodiment, a guide groove is provided on the wall of the shaft hole for installing the hollow shaft, and the insert moving seat has a guide block extending into the guide groove, and the guide groove guides the insert moving seat to move along the extension direction of the insert.

[0017] Furthermore, in one embodiment, the plug is installed on the plug movable seat by a guide screw, the axial hole wall of the mounting hollow shaft has a long hole, the waist extension direction of the long hole is consistent with the extension direction of the plug, the guide screw extends out of the long hole, and the long hole guides the guide screw to move axially along the mounting hollow shaft.

[0018] Furthermore, in one embodiment, the battery cell winding mechanism also includes a winding needle shaft, the winding needle shaft is fixed to the winding needle seat, and the winding needle shaft is a solid shaft.

[0019] Furthermore, in one embodiment, the battery cell winding mechanism further includes a rotation driving mechanism, and the rotation driving mechanism drives the insert mounting seat to rotate so that the insert and the winding needle rotate synchronously.

[0020] In a second aspect, an embodiment provides a battery cell production device, including a diaphragm conveying mechanism, a pole piece conveying mechanism and a battery cell winding mechanism; the battery cell winding mechanism includes:

[0021] A winding needle assembly, the winding needle assembly is used for winding the battery core;

[0022] A needle winding seat, on which the needle winding assembly is movably arranged;

[0023] An insert sheet mounting seat, wherein the insert sheet mounting seat has a needle winding nozzle for inserting the needle winding assembly;

[0024] An insert sheet, the insert sheet is used to be inserted into the winding cell position, and the insert sheet is arranged parallel to and spaced from the winding needle assembly after being inserted into the winding cell position;

[0025] An insert moving seat, one end of the insert is an insert mounting end floatingly arranged on the insert moving seat, and the insert moving seat is movably arranged on the insert mounting seat along the extending direction of the insert;

[0026] And a plug-in driving mechanism, the plug-in driving mechanism is used to drive the plug-in moving seat to move relative to the plug-in mounting seat to achieve the extension and retraction of the plug-in.

[0027] Furthermore, in one embodiment, the insert mounting seat includes a mounting hollow shaft, the extension direction of the mounting hollow shaft is consistent with the extension direction of the insert, and the insert movable seat is movably configured in the mounting hollow shaft.

[0028] Furthermore, in one embodiment, the insert mounting seat includes an ejector seat, the winding needle nozzle is located on the ejector seat, a ejector for plugging into the winding needle assembly is fixed in the winding needle nozzle, the mounting hollow shaft is fixed on the side of the ejector seat facing away from the winding needle assembly, and the insert passes through the ejector seat.

[0029] Furthermore, in one embodiment, the insert movable seat is connected to a connecting rod, the connecting rod extends out of one end of the mounting hollow shaft facing away from the winding needle assembly, the connecting rod is connected to the insert driving mechanism, and the insert driving mechanism drives the insert movable seat via the connecting rod.

[0030] Furthermore, in one embodiment, the connecting rod is movably connected to the insert movable seat.

[0031] Furthermore, in one embodiment, a guide groove is provided on the wall of the shaft hole for installing the hollow shaft, and the insert moving seat has a guide block extending into the guide groove, and the guide groove guides the insert moving seat to move along the extension direction of the insert.

[0032] Furthermore, in one embodiment, the plug is installed on the plug movable seat by a guide screw, the axial hole wall of the mounting hollow shaft has a long hole, the waist extension direction of the long hole is consistent with the extension direction of the plug, the guide screw extends out of the long hole, and the long hole guides the guide screw to move axially along the mounting hollow shaft.

[0033] Furthermore, in one embodiment, the battery cell winding mechanism also includes a winding needle shaft, the winding needle shaft is fixed to the winding needle seat, and the winding needle shaft is a solid shaft.

[0034] Furthermore, in one embodiment, the battery cell winding mechanism further includes a rotation driving mechanism, and the rotation driving mechanism drives the insert mounting seat to rotate so that the insert and the winding needle rotate synchronously.

[0035] According to the battery cell winding mechanism of the above embodiment, one end of the winding needle assembly is movably arranged on the winding needle seat, and the other end is inserted into the winding needle insertion mouth of the plug-in plate mounting seat, and one end of the plug-in plate is floatingly arranged on the plug-in plate movable seat, and the plug-in plate movable seat is arranged on the plug-in plate mounting seat. In this way, the winding needle assembly and the plug-in plate are respectively installed on the winding needle seat and the plug-in plate mounting seat, which reduces the bearing capacity requirements of the winding needle seat, thereby reducing the material requirements of the winding needle seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the structure of a battery cell winding mechanism in an embodiment.

[0037] List of feature names corresponding to the figure marks in the figure: 1. Winding needle seat; 2. Winding needle assembly; 21. First winding needle; 211. First end; 212. Second end; 22. Second winding needle; 221. Third end; 222. Fourth end; 3. Insert mounting seat; 31. Winding needle plug nozzle; 32. Install hollow shaft; 321. Shaft hole; 322. Guide groove; 323. Long hole; 33. Ejector seat; 34. Fixing nut; 4. Insert; 41. Insert mounting end; 42. Overhanging end; 5. Insert moving seat; 51. Guide block; 6. Ejector; 7. Connecting rod; 8. Guide screw; 9. Winding needle shaft; 10. Spline sleeve. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0039] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0040] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0041] In one embodiment, please refer to Figure 1 The battery cell winding mechanism includes a winding needle seat 1, a winding needle assembly 2, a plug-in mounting seat 3, a plug-in 4, a plug-in moving seat 5 and a plug-in driving mechanism (not shown in the figure).

[0042] The winding needle assembly 2 is movably arranged on the winding needle seat 1 and is used for winding the battery cell. The battery cell winding mechanism also includes a winding needle rotation driving mechanism (not shown in the figure) for driving the winding needle seat 1 to rotate. The winding needle assembly 2 includes a first winding needle 21 and a second winding needle 22, one end of the first winding needle 21 and one end of the second winding needle 22 are arranged on the winding needle seat 1, and the other end of the first winding needle 21 and the other end of the second winding needle 22 are inserted into the plug-in mounting seat 3. For the convenience of description, the two ends of the first winding needle 21 are respectively the first end 211 and the second end 212, and the two ends of the second winding needle 22 are respectively the third end 221 and the fourth end 222, wherein the first end 211 and the third end 221 are movably arranged on the winding needle seat 1, and the second end 212 and the fourth end 222 are inserted into the plug-in mounting seat 3. The plug-in mounting seat 3 has a winding needle insertion nozzle 31 for inserting the second end 212 and the fourth end 222 of the winding needle assembly 2. The winding needle insertion nozzle 31 is used to maintain the posture between the first winding needle 21 and the second winding needle 22. In one embodiment, the first end 211 and the third end 221 are hinged on the needle winding seat 1 .

[0043] In the present application, the winding needle assembly 2 and the winding needle seat 1 can adopt any feasible form, for example, the first winding needle 21 and the second winding needle 22 in the winding needle assembly 2 can clamp the pole piece and the diaphragm to be wound, or the ends of the pole piece and the diaphragm can be wound on the winding needle assembly 2. As for the winding needle rotation drive mechanism, any feasible method can also be adopted, such as motor drive, gear train drive mechanism drive, or synchronous belt drive mechanism drive.

[0044] The plug-in sheet 4 is used to be inserted into the winding cell position, and after the plug-in sheet 4 is inserted into place, the plug-in sheet 4 is arranged in parallel with the winding needle assembly 2. When winding the cell, the winding needle assembly 2 is first wound for a certain number of turns, and then the plug-in sheet 4 is extended, and the plug-in sheet 4 is inserted into the winding cell position, so that part of the pole piece and the diaphragm are wound on the plug-in sheet 4. After the cell is wound, the cell is separated from the winding needle assembly 2 and the plug-in sheet 4, and a gap is formed at the position of the plug-in sheet 4. In the subsequent processing of the cell, the gap can release the tension of the cell and prevent the cell from being easily deformed.

[0045] One end of the plug 4 is a plug installation end 41 that is floatingly configured on the plug moving seat 5, and the other end is a cantilevered end 42 that cantilevers on one side of the plug moving seat 5. The plug moving seat 5 is configured on the plug installation seat 3 to move along the extension direction of the plug 4. The plug driving mechanism is used to drive the plug moving seat 5 to move relative to the plug installation seat 3 to achieve the extension and retraction of the plug 4. The floating configuration of the plug 4 on the plug moving seat 5 enables the plug 4 to be adjusted according to adaptability.

[0046] In the present application, one end of the winding needle assembly 2 is movably arranged on the winding needle seat 1, and the other end is inserted into the winding needle insertion nozzle 31 of the insert plate mounting seat 3, and one end of the insert plate 4 is floatingly arranged on the insert plate moving seat 5, and the insert plate moving seat 5 is arranged on the insert plate mounting seat 3. In this way, the winding needle assembly 2 and the insert plate 4 are respectively installed on the winding needle seat 1 and the insert plate mounting seat 3, which reduces the bearing capacity requirements of the winding needle seat 1, thereby reducing the material requirements of the winding needle seat 1.

[0047] In the present application, the insert drive mechanism may adopt any feasible drive mechanism, such as a drive cylinder, a drive oil cylinder, a linear motor drive mechanism, a gear rack drive mechanism, a screw nut drive mechanism or a crank slider drive mechanism.

[0048] In order to make the plug-in sheet 4 and the winding needle assembly 2 rotate synchronously, in one embodiment, the battery cell winding mechanism further includes a rotation drive mechanism (not shown in the figure), which drives the plug-in sheet mounting seat 3 to rotate, so that the plug-in sheet 4 and the winding needle assembly rotate synchronously. Specifically, in one embodiment, the rotation drive mechanism includes a mounting seat gear coaxially fixed to the plug-in sheet mounting seat 3, and the plug-in sheet mounting seat 3 is driven to rotate by meshing the motor gear fixed to the drive motor with the mounting seat gear. Specifically, the plug-in sheet mounting seat 3 includes a spline sleeve 10, and the mounting seat gear is fixed on the spline sleeve 10.

[0049] In one embodiment, the battery cell winding mechanism further includes a winding needle rotation driving mechanism, which drives the winding needle seat to rotate. The winding needle rotation driving mechanism that drives the winding needle assembly to rotate is a mature prior art and will not be described in detail in this application.

[0050] In some other embodiments, the rotary drive mechanism may also be any other feasible mode, such as a synchronous belt drive mechanism. In some other embodiments, the rotary drive mechanism may synchronously drive the needle winding seat 1 to rotate while driving the insert mounting seat 3 to rotate. In this case, the needle winding seat 1 and the insert mounting seat 3 need to be installed on the same rotating frame. In some other embodiments, the rotary drive mechanism drives the needle winding seat to rotate. Since the needle winding assembly is inserted into the insert mounting seat, the insert mounting seat may also rotate synchronously driven by the needle winding assembly.

[0051] Further, in one embodiment, please refer to Figure 1 The insert mounting seat 3 includes a mounting hollow shaft 32, the extension direction of the mounting hollow shaft 32 is consistent with the extension direction of the insert 4, and the insert moving seat 5 is movably configured in the mounting hollow shaft 32. The mounting hollow shaft 32 facilitates the storage of the insert 4, and the insert 4 can be protected when the insert 4 is stored. In one embodiment, please refer to Figure 1 The spline sleeve 10 is inserted into the shaft hole 321 for installing the hollow shaft 32 in a rotation-proof manner.

[0052] In some other embodiments, in addition to using the hollow shaft 32 for installation, the insert mounting seat 3 can also use a solid structure such as a flat plate or a long rod.

[0053] Further, in one embodiment, please refer to Figure 1 The insert mounting seat 3 includes an ejector seat 33, a winding needle plug 31 is located on the ejector seat 33, an ejector 6 for plugging with the winding needle assembly 2 is fixed in the winding needle plug 31, a mounting hollow shaft 32 is fixed on the side of the ejector seat 33 facing away from the winding needle assembly 2, and the insert 4 passes through the ejector seat 33. The ejector seat 33 and the mounting hollow shaft 32 are arranged separately to facilitate the installation of the ejector 6. The ejector seat 33 and the mounting hollow shaft 32 can be fixed by any feasible method, such as by flange and fastener cooperation; for example, by welding or riveting. In some other embodiments, the insert mounting seat 3 can also be an integrated structure.

[0054] Specifically, in one embodiment, please refer to Figure 1 The winding needle plug 31 passes through the ejector seat 33, and passes through one end of the ejector seat 33 and extends into the shaft hole of the hollow shaft 32. One end of the winding needle plug 31 is matched with the ejector seat 33, and the other end is threadedly connected with a fixing nut 34, which is blocked by the ejector seat 33 and fixes the ejector seat 33 and the winding needle plug 31.

[0055] Specifically, the winding needle insertion nozzle 31 has an insertion hole for the winding needle assembly 2 to be inserted, and the ejector pin 6 is fixed in the insertion hole. The first winding needle 21 and the second winding needle 22 are kept at a distance by the ejector pin 6.

[0056] In one embodiment, please refer to Figure 1The insert moving seat 5 is connected with a connecting rod 7, the connecting rod 7 extends out to install the hollow shaft 32 at one end facing away from the winding needle assembly 2, the connecting rod 7 is connected to the insert driving mechanism, and the insert driving mechanism drives the insert moving seat 5 through the connecting rod 7. The hollow shaft 32 is extended out of the connecting rod 7 to facilitate connection with the insert driving mechanism.

[0057] Further, in one embodiment, please refer to Figure 1 , the connecting rod 7 is movably connected to the insert moving seat 5. Since the insert moving seat 5 is movably configured on the insert mounting seat 3, and the moving direction is required, the connecting rod 7 is movably connected to the insert moving seat 5 to reduce the interference with the moving direction of the insert moving seat 5, and the assembly is more convenient, and the insert moving seat 5 is also smoother during movement.

[0058] Specifically, in one embodiment, please refer to Figure 1 The connecting rod 7 is hinged with the insert moving seat 5 through a pin. Of course, in some other embodiments, the connecting rod 7 can also be connected with the insert moving seat 5 through a ball joint, and can also be movably connected through a soft connection or the like.

[0059] In one embodiment, in order to make the insert moving seat 5 move in a set direction, please refer to Figure 1 The wall of the shaft hole 321 of the movable hollow shaft 32 is provided with a guide groove 322, and the insert moving seat 5 is provided with a guide block 51 extending into the guide groove 322, and the guide groove 322 guides the insert moving seat 5 to move along the extending direction of the insert 4. The guide block 51 cooperates with the guide groove 322 to better limit the movement direction of the insert moving seat 5 and make the operation smoother. Specifically, in one embodiment, the guide block 51 is fixed to the insert moving seat 5 by screws.

[0060] In some other embodiments, a guide strip may be provided on the wall of the shaft hole 321 for installing the hollow shaft 32, and a guide groove adapted to the guide strip may be provided on the insert movable seat 5. Of course, the moving direction of the insert movable seat 5 may also be limited by the surface of the insert movable seat 5 cooperating with the inner wall of the shaft hole 321 for movably installing the hollow shaft 32.

[0061] In one embodiment, please refer to Figure 1 , the insert 4 is mounted on the insert moving seat 5 through the guide screw 8, the wall of the shaft hole 321 for mounting the hollow shaft 32 has a long hole 323, the waist extension direction of the long hole 323 is consistent with the extension direction of the insert 4, the guide screw 8 extends out of the long hole 323, and the long hole 323 guides the guide screw 8 to move axially along the mounting hollow shaft 32. The guide screw 8 does not press the insert 4, and a certain gap is left between the screw head and the insert 4. In some other embodiments, the insert 4 can be mounted on the insert moving seat 5 by other feasible methods, such as the insert 4 can be hinged on the insert moving seat 5.

[0062] In one embodiment, please refer to Figure 1 The battery core winding mechanism further includes a winding needle shaft 9, which is fixed to the winding needle seat 1 and is a solid shaft. A solid shaft has higher strength and is not easily deformed. In some other embodiments, the winding needle shaft 9 may also be a hollow shaft.

[0063] In an embodiment of a battery cell production device, the battery cell production device includes a diaphragm conveying mechanism, a pole piece conveying mechanism and a battery cell winding mechanism as described in any one of the above embodiments, which will not be described in detail.

[0064] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A battery core winding mechanism, characterized in that: include: A winding needle assembly, the winding needle assembly is used for winding the battery core; roll A needle seat, on which the needle winding assembly is movably arranged; An insert sheet mounting seat, wherein the insert sheet mounting seat has a needle winding nozzle for inserting the needle winding assembly; An insert sheet, the insert sheet is used to be inserted into the winding cell position, and the insert sheet is arranged parallel to and spaced from the winding needle assembly after being inserted into the winding cell position; An insert moving seat, one end of the insert is an insert mounting end floatingly arranged on the insert moving seat, and the insert moving seat is movably arranged on the insert mounting seat along the extending direction of the insert; And a plug-in driving mechanism, the plug-in driving mechanism is used to drive the plug-in moving seat to move relative to the plug-in mounting seat to achieve the extension and retraction of the plug-in.

2. The battery core winding mechanism according to claim 1, characterized in that: The insert piece mounting seat comprises an installation hollow shaft, the extension direction of the installation hollow shaft is consistent with the extension direction of the insert piece, and the insert piece movable seat is movably configured in the installation hollow shaft.

3. The battery core winding mechanism according to claim 2, characterized in that: The insert mounting seat includes an ejector seat, the winding needle insertion nozzle is located on the ejector seat, an ejector for plugging with the winding needle assembly is fixed in the winding needle insertion nozzle, the mounting hollow shaft is fixed on the side of the ejector seat facing away from the winding needle assembly, and the insert passes through the ejector seat.

4. The battery core winding mechanism according to claim 2, characterized in that: The insert moving seat is connected with a connecting rod, the connecting rod extends out of one end of the mounting hollow shaft facing away from the winding needle assembly, the connecting rod is connected to the insert driving mechanism, and the insert driving mechanism drives the insert moving seat through the connecting rod.

5. The battery core winding mechanism according to claim 4, characterized in that: The connecting rod is movably connected to the insert movable seat.

6. The battery core winding mechanism according to any one of claims 2 to 5, characterized in that: A guide groove is provided on the wall of the shaft hole for installing the hollow shaft, and the insert moving seat has a guide block extending into the guide groove, and the guide groove guides the insert moving seat to move along the extending direction of the insert.

7. The battery core winding mechanism according to any one of claims 2 to 5, characterized in that: The plug-in piece is installed on the plug-in piece moving seat through a guide screw. The axial hole wall of the mounting hollow shaft has a long hole. The waist extension direction of the long hole is consistent with the extension direction of the plug-in piece. The guide screw extends out of the long hole, and the long hole guides the guide screw to move axially along the mounting hollow shaft.

8. The battery core winding mechanism according to any one of claims 1 to 5, characterized in that: The battery cell winding mechanism also includes a winding needle shaft, the winding needle shaft is fixed to the winding needle seat, and the winding needle shaft is a solid shaft.

9. The battery core winding mechanism according to any one of claims 1 to 5, characterized in that: The battery core winding mechanism further comprises a rotation driving mechanism, and the rotation driving mechanism drives the insert sheet mounting seat to rotate so that the insert sheet and the winding needle rotate synchronously.

10. A battery cell production device, characterized in that: It comprises a diaphragm conveying mechanism, a pole piece conveying mechanism and a battery cell winding mechanism as claimed in any one of claims 1 to 9.

Images