Battery cell winding device

Abstract

The invention belongs to the technical field of batteries, and discloses a battery cell winding device which comprises a rack, a rotating main body, two winding needle modules, a driving module, a diaphragm passing roller and a fly cutting module, the rotating main body is rotatably mounted on the rack, each winding needle module is mounted on the rotating main body, each winding needle module comprises a winding needle driving assembly and a winding needle assembly, and the driving module is mounted on the rotating main body. The winding needle driving assembly is used for driving the winding needle assembly to rotate and axially move, the driving module is connected with the rotating body to drive the rotating body to rotate, the diaphragm passing roller is installed on the rack, and the fly cutting module comprises a cutter assembly and a cutter driving assembly. The cutter driving assembly is used for driving the cutter assembly to move in the direction close to or away from the winding needle module and can drive the cutter assembly to rotate. According to the battery cell winding device, transportation of the diaphragm does not need to be stopped when the diaphragm is cut off, movement cutting can be achieved, the invalid working time of the battery cell winding device is shortened, and the working efficiency of the battery cell winding device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery core winding device. Background Art

[0002] The existing battery cell winding device usually includes two winding needle assemblies. During the actual working process, one of the two winding needle assemblies is located at the winding position, and the other is located at the unloading position. When the battery cell winding is nearly completed, it is necessary to switch the winding needle assembly at the winding position and the unloading winding needle assembly. During the switching process, it is necessary to cut off the diaphragm on the winding needle assembly at the unloading position, and wind the diaphragm onto the winding needle assembly at the winding position. Before the diaphragm is cut off, the diaphragm transportation needs to be stopped. This logical action is time-consuming, which reduces the working efficiency of the battery cell winding device. Summary of the invention

[0003] The object of the present invention is to provide a battery cell winding device, which does not need to stop the transportation of the diaphragm when cutting the diaphragm, can achieve moving cutting, reduces the ineffective working time of the battery cell winding device, and is conducive to improving the working efficiency of the battery cell winding device.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The present invention discloses a battery cell winding device, comprising: a frame; a rotating body, the rotating body being rotatably mounted on the frame; two winding needle modules, each of which is mounted on the rotating body, each of which comprises a winding needle drive assembly and a winding needle assembly, the winding needle drive assembly being used to drive the winding needle assembly to rotate and the winding needle assembly to move axially; a driving module, the driving module being mounted on the frame and connected to the rotating body to drive the rotating body to rotate; a diaphragm roller, the diaphragm roller being mounted on the frame; a fly cutting module, the fly cutting module being mounted on the rotating body; and The frame, the flying cutting module includes a cutter assembly and a cutter driving assembly, the cutter driving assembly is used to drive the cutter assembly to move toward or away from the winding needle module, and can drive the cutter assembly to rotate; wherein: the diaphragm stops at the diaphragm roller and is connected to one of the winding needle modules, and during the process of cutting the diaphragm, the driving module drives the rotating body to rotate so that the other winding needle module stops at the diaphragm, and the cutter assembly has the same angular velocity and rotation center as the winding needle module that stops at the diaphragm when moving toward the direction close to the diaphragm.

[0006] In some embodiments, the cutter drive assembly includes: a first linear drive unit, the first linear drive unit includes a first drive source and a linear transmission structure, the power input end of the linear transmission structure is connected to the output shaft of the first drive source, and the power output end of the linear transmission structure is connected to the cutter assembly; a first rotational drive unit, the first rotational drive unit includes a second drive source and a rotational transmission structure, the power input end of the rotational transmission structure is connected to the output shaft of the second drive source, and the power output end of the rotational transmission structure is connected to the first linear drive unit.

[0007] In some specific embodiments, the power input and output ends of the rotary transmission structure include a driving gear, and the output end of the rotary transmission structure includes an arc-shaped rack, the arc-shaped rack is meshed with the driving gear, the driving gear is connected to the output shaft of the second driving source, and the arc-shaped rack is connected to the first linear drive unit through a rack mounting plate.

[0008] In some more specific embodiments, the first rotational drive unit also includes: a drive fixing plate, which is used to install the second drive source; an arcuate guide rail and an arcuate slider, which cooperates with the arcuate guide rail, one of the arcuate guide rail and the arcuate slider is connected to the drive fixing plate, and the other of the arcuate guide rail and the arcuate slider is connected to the rack mounting plate.

[0009] In some embodiments, the cutter assembly includes: a cutter fixing seat, the cutter fixing seat is connected to the cutter driving assembly; a floating pressure head, the floating pressure head is slidably mounted on the cutter fixing seat, the floating pressure head has a pressure roller body that abuts against the diaphragm, and the pressure roller bodies are arranged in pairs; a first elastic member, one end of the first elastic member abuts against the cutter fixing seat, and the other end abuts against the floating pressure head; a cutter body, the cutter body is fixedly connected to the cutter fixing seat and is located between the pressure roller bodies arranged in pairs; wherein: when the cutter driving assembly drives the cutter assembly to move, the pressure roller body contacts the diaphragm before the cutter body.

[0010] In some specific embodiments, the floating pressure head also includes: a pressure roller connecting seat; a sliding shaft, one end of the sliding shaft is connected to the pressure roller connecting seat, and the other end is passed through the cutter fixing seat, and the first elastic member is sleeved on the sliding shaft; a pressure roller connecting shaft, the pressure roller connecting shafts are arranged in pairs, and the paired pressure roller connecting shafts are respectively connected to two oppositely arranged side walls of the pressure roller connecting seat, and the two ends of the pressure roller body are rotatably connected to the paired pressure roller connecting shafts.

[0011] In some embodiments, the cutter assembly also includes: a cutter connecting plate, one end of which is connected to the cutter fixing seat, and the other end is connected to the cutter body; an auxiliary pressure head, which is slidably mounted on the cutter connecting plate in a direction perpendicular to the sliding direction of the floating pressure head, and the auxiliary pressure head has a plurality of auxiliary pressure rollers that abut against the diaphragm; a second elastic member, one end of which abuts against the cutter connecting plate, and the other end abuts against the auxiliary pressure head.

[0012] In some specific embodiments, the auxiliary pressure head includes: a floating plate, one end of which is provided with a plurality of mounting grooves, each of which is provided with a rotatable auxiliary pressure roller; a floating shaft, one end of which is connected to the floating plate, and the other end is passed through the cutter connecting plate, and the second elastic member is sleeved on the floating shaft.

[0013] In some embodiments, the rotating body is provided with a positioning piece; the battery cell winding device also includes a positioning module, the positioning module is installed on the frame, the positioning module has a positioning position for positioning the positioning piece and a release position for releasing the positioning piece, when the positioning module positions the positioning piece, the rotating body is fixed relative to the frame.

[0014] In some embodiments, the battery cell winding device also includes a locking nozzle module, which is installed on the rotating body. The locking nozzle module has a clamping state for clamping the winding needle assembly and a disengaging state for disengaging from the winding needle assembly. When the locking nozzle module is in the clamping state, the battery cell roll on the winding needle assembly is fixed relative to the winding needle assembly.

[0015] The beneficial effects of the battery cell winding device of the present invention are as follows: since the cutter assembly of the battery cell winding device can rotate at the same angular velocity and around the same rotation center as the winding needle assembly under the drive of the cutter drive assembly, in the process of the cutter assembly cutting the diaphragm, in the transportation direction of the diaphragm, the diaphragm, the cutter assembly and the winding needle assembly all remain relatively still, and the movement component of the cutter assembly along the radial direction of the winding needle assembly can be used as a force to cut the diaphragm, thereby realizing the function of cutting the diaphragm while moving, reducing the ineffective working time of the battery cell winding device, and helping to improve the working efficiency of the battery cell winding device.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a battery cell winding device according to an embodiment of the present invention;

[0018] Figure 2is a schematic structural diagram of a battery cell winding device in another direction according to an embodiment of the present invention;

[0019] Figure 3 is a structural schematic diagram of a battery cell winding device according to an embodiment of the present invention when performing a winding process;

[0020] Figure 4 is a schematic structural diagram of a battery cell winding device according to an embodiment of the present invention when preparing to cut a separator;

[0021] Figure 5 2 is a schematic structural diagram of a cell winding device according to an embodiment of the present invention when a cutter assembly abuts against a diaphragm;

[0022] Figure 6 2 is a schematic structural diagram of a cutter assembly of a battery cell winding device according to an embodiment of the present invention when the separator is cut;

[0023] Figure 7 2 is a schematic structural diagram of a cell winding device according to an embodiment of the present invention when a cutter assembly is pressing a diaphragm;

[0024] Figure 8 It is a structural schematic diagram of a cell winding device according to an embodiment of the present invention in which the diaphragm cutting is completed and the diaphragm is wound onto a winding needle assembly;

[0025] Fig. 9 is a structural schematic diagram of a fly-cutting module according to an embodiment of the present invention;

[0026] Fig.10 is a schematic structural diagram of a cutter assembly according to an embodiment of the present invention;

[0027] Fig.11 is a schematic structural diagram of a cutter assembly in another direction according to an embodiment of the present invention;

[0028] Fig.12 It is a schematic diagram of the matching structure of the rotating body, the driving module and the frame according to an embodiment of the present invention;

[0029] Fig.13 yes Fig.12 A schematic diagram of the structure in another direction of the structure shown;

[0030] Fig.14 is a structural schematic diagram of a needle winding module according to an embodiment of the present invention;

[0031] Fig.15 is a schematic structural diagram of the winding needle module of an embodiment of the present invention in another direction;

[0032] Fig.16 yes Fig.15 AA section view;

[0033] Fig.17is a structural schematic diagram of a lock nozzle module according to an embodiment of the present invention;

[0034] Fig.18 It is a structural schematic diagram of a positioning module according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 100, frame; 110, support panel; 120, first support seat; 130, support connecting seat; 140, first bearing; 150, first bearing fixing plate; 160, second support seat; 170, second bearing; 180, second bearing fixing plate;

[0037] 200, rotating body; 210, rotating disk; 220, rotating shaft; 230, limiting rod; 231, positioning member;

[0038] 300, needle winding module; 310, needle winding drive assembly; 311, second linear drive unit; 3111, first drive member; 3112, first fixed seat; 3113, second fixed seat; 3114, lead screw; 3115, slide seat; 3116, coupling; 3117, first slide rail; 3118, first slider; 312, second rotary drive unit; 3121, second drive member; 3122, needle winding mounting seat; 3123, third bearing; 3124, bearing fixing nut; 3125, first reducer; 3126, first reducer mounting plate; 320, needle winding assembly; 321, needle winding shaft; 322, needle winding body; 301, first needle winding assembly; 302, second needle winding assembly;

[0039] 400, driving module; 410, third driving member; 420, belt transmission assembly; 421, driving wheel; 422, driven wheel; 423, transmission belt; 430, slip ring mounting seat; 440, slip ring body; 450, second reducer; 460, second reduction mounting plate;

[0040] 500, flying cutting module; 510, cutter assembly; 511, cutter fixing seat; 512, floating pressure head; 5121, pressure roller body; 5122, pressure roller connecting seat; 5123, sliding shaft; 5124, pressure roller connecting shaft; 5125, pressure roller bearing; 513, first elastic member; 514, cutter body; 515, cutter connecting plate; 516, auxiliary pressure head; 5161, auxiliary pressure roller; 5162, floating plate; 5163, floating shaft; 517, linear bearing; 51 8. Cutter fixing block; 520. Cutter driving assembly; 521. First linear driving unit; 5211. First driving source; 5212. First screw fixing seat; 5213. First screw body; 5214. First screw nut; 522. First rotary driving unit; 5221. Second driving source; 5222. Driving gear; 5223. Arc rack; 5224. Rack mounting plate; 5225. Driving fixing plate; 5226. Arc guide rail; 5227. Arc slider;

[0041] 600, diaphragm roller;

[0042] 700, positioning module; 710, positioning mounting seat; 720, positioning drive member; 730, positioning plate; 731, positioning groove; 740, floating joint; 750, second slide rail; 760, second slide block; 770, drive mounting plate; 780, slide rail fixing plate; 790, positioning adapter plate;

[0043] 800, lock nozzle module; 810, lock nozzle driving member; 820, lock nozzle connecting seat; 830, lock nozzle body; 840, second screw rod fixing seat; 850, second screw rod body; 860, second screw rod nut; 870, bearing outer fixing ring; 880, bearing inner fixing ring; 890, fourth bearing;

[0044] 10. Diaphragm. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0049] The present invention discloses a battery core winding device, referring to Figure 1-Figure 3 As shown, the battery cell winding device includes a frame 100, a rotating body 200, two winding needle modules 300, a driving module 400, a diaphragm roller 600 and a fly cutting module 500. The rotating body 200 can rotatably install the frame 100. Each winding needle module 300 is installed on the rotating body 200. Each winding needle module 300 includes a winding needle driving assembly 310 and a winding needle assembly 320. The winding needle driving assembly 310 is used to drive the winding needle assembly 320 to rotate and the winding needle assembly 320 The drive module 400 is installed on the frame 100 and connected to the rotating body 200 to drive the rotating body 200 to rotate. The diaphragm roller 600 is installed on the frame 100. The fly-cutting module 500 is installed on the frame 100. The fly-cutting module 500 includes a cutter assembly 510 and a cutter driving assembly 520. The cutter driving assembly 520 is used to drive the cutter assembly 510 to move toward or away from the needle winding module 300, and can drive the cutter assembly 510 to rotate. The diaphragm 10 is connected to a needle winding module 300 at the diaphragm roller 600. In the process of cutting the diaphragm 10, the drive module 400 drives the rotating body 200 to rotate so that the other needle winding module 300 is stopped at the diaphragm 10. When the cutter assembly 510 moves toward the direction close to the diaphragm 10, it has the same angular velocity as the needle winding module 300 stopped at the diaphragm 10.

[0050] First, it should be noted that, in order to facilitate the description of the specific working process of the battery winding device of this embodiment when cutting the separator 10, reference Figure 3-Figure 8As shown, the winding needle assembly 320 that first clamps the diaphragm 10 is called the first winding needle assembly 301 (the winding needle assembly 320 that will be switched to the unloading position), and the winding needle assembly 320 that stops the diaphragm 10 when the diaphragm 10 is cut is called the second winding needle assembly 302 (the winding needle assembly 320 that will be switched to the winding position). Figure 3 As shown, the rotating body 200 rotates counterclockwise under the drive of the driving module 400, so that the first winding needle assembly 301 moves toward the material discharge position, and the second winding needle assembly 302 moves toward the winding position, and the second winding needle assembly 302 rotates clockwise at a fixed angular velocity ω under the drive of the winding needle driving assembly 310. At the same time, the cutter assembly 510 also rotates clockwise at an angular velocity ω under the drive of the cutter driving assembly 520, and moves in a direction close to the diaphragm 10; the rotation center of the cutter assembly 510 coincides with the rotation center of the second winding needle assembly 302. When the second winding needle assembly 302 moves to abut against the diaphragm 10 (as shown in FIG. Figure 4 The linear velocity of the membrane 10 is equal to the linear velocity of the outer wall of the second needle winding assembly 302. When the cutter assembly 510 is driven by the cutter driving assembly 520 and stops against the membrane 10 (such as Figure 5 As shown in the figure, the angular velocity of the cutter assembly 510 is equal to the angular velocity of the second winding needle assembly 302, and the linear velocity of the diaphragm 10 transportation is equal to the linear velocity of the outer wall of the second winding needle assembly 302. In this state, the diaphragm 10 is pressed between the cutter assembly 510 and the second winding needle assembly 302. In the transportation direction of the diaphragm 10, the diaphragm 10, the cutter assembly 510, and the winding needle assembly 320 all remain relatively still. Because the cutter assembly 510 is always driven by the cutter drive assembly 520 to move and rotate synchronously, the movement component of the cutter assembly 510 along the radial direction of the second winding needle assembly 302 can cut the diaphragm 10 (as shown in the figure). Figure 6 As shown in the figure, it is achieved that the diaphragm 10 does not need to be transported when it is cut. After the cutting is completed, the battery cell roll on the first winding needle assembly 301 can be driven away by the unloading robot arm or manually; and the broken end of the diaphragm 10 can be pressed tightly inside the second winding needle assembly 302 by the diaphragm 10 pressing plate inside the second winding needle assembly 302 (as shown in the figure). Figure 7 As shown in FIG. 1 , the second winding needle assembly 302 continues to rotate under the drive of its winding needle drive assembly 310, and the diaphragm 10 can be continuously wound onto the second winding needle assembly 302. At this time, the cutter assembly 510 returns to its original position under the drive of the cutter drive assembly 520, completing a diaphragm 10 cutting process (as shown in FIG. 1 ). Figure 8 shown).

[0051] To summarize, since the cutter assembly 510 of the present embodiment can rotate at the same angular velocity as the winding needle assembly 320 under the drive of the cutter drive assembly 520, in the process of the cutter assembly 510 cutting the diaphragm 10, in the transportation direction of the diaphragm 10, the diaphragm 10, the cutter assembly 510, and the winding needle assembly 320 all remain relatively still, and the movement component of the cutter assembly 510 along the radial direction of the winding needle assembly 320 can be used as a force to cut the diaphragm 10, thereby realizing the function of cutting the diaphragm 10 while moving, reducing the ineffective working time of the battery cell winding device, and helping to improve the working efficiency of the battery cell winding device.

[0052] refer to Figure 1 and Figure 2 As shown, the cell winding device further includes a locking nozzle module 800 and a positioning module 700. The locking nozzle module 800 is mounted on the rotating shaft 220. The locking nozzle module 800 has a pressing state of pressing the winding needle assembly 320 and a disengaging state of disengaging the winding needle assembly 320. When the locking nozzle module 800 is in the pressing state, the cell on the winding needle assembly 320 is fixed relative to the winding needle assembly 320. The cell winding device further includes a positioning module 700. The positioning module 700 is mounted on the frame 100. The positioning module 700 has a positioning position for positioning the positioning member 231 and a releasing position for releasing the positioning member 231. When the positioning module 700 positions the positioning member 231, the rotating body 200 is fixed relative to the frame 100. It is understandable that during the winding process, if the battery cell roll moves along its axial direction relative to the winding needle assembly 320, it will affect the winding yield. In this embodiment, the additional locking nozzle module 800 can fix the battery cell roll on the winding needle assembly 320 during the actual working process to prevent the battery cell roll from moving axially, thereby ensuring the winding stability. In addition, during the winding process and the unloading process, the rotating body 200 needs to be fixed relative to the frame 100. If the winding needle assembly 320 rotates under the drive of the winding needle drive assembly 310, the rotation of the rotating body 200 will cause a working failure. In this embodiment, the additional positioning module 700 can position the rotating body 200, so that when the winding needle assembly 320 rotates under the drive of the winding needle drive assembly 310, the rotating body 200 is fixed relative to the frame 100, which reduces the probability of working failures and improves the working reliability of the battery cell winding device.

[0053] refer to Fig. 9As shown, the cutter drive assembly 520 includes a first linear drive unit 521 and a first rotary drive unit 522. The first linear drive unit 521 includes a first drive source 5211 and a linear transmission structure. The power input end of the linear transmission structure is connected to the output shaft of the first drive source 5211, and the power output end of the linear transmission structure is connected to the cutter assembly 510. The first rotary drive unit 522 includes a second drive source 5221 and a rotary transmission structure. The power input end of the rotary transmission structure is connected to the output shaft of the second drive source 5221, and the power output end of the rotary transmission structure is connected to the first linear drive unit 521. It can be understood that in the actual working process, the movement of the cutter assembly 510 toward the direction close to the diaphragm 10 is realized by the split first linear drive unit 521, and the synchronous rotation of the cutter assembly 510 and the needle winding assembly 320 is realized by the first rotary drive unit 522, which can simplify the control of the motion command of the cutter assembly 510, thereby helping to reduce the manufacturing cost of the cutter drive assembly 520.

[0054] Optionally, the power input and output end of the rotary transmission structure includes a driving gear 5222, and the output end of the rotary transmission structure includes an arc-shaped rack 5223, which is meshed with the driving gear 5222, and the driving gear 5222 is connected to the output shaft of the second driving source 5221, and the arc-shaped rack 5223 is connected to the first linear driving unit 521 through the rack mounting plate 5224. It can be understood that the second driving source 5221 is a servo motor, and the arc-shaped rack 5223 is driven by the servo motor driving gear 5222, which can simplify the structure of the first rotary driving unit 522 on the one hand, and is conducive to controlling the rotational angular velocity of the first linear driving unit 521 on the other hand, so as to ensure that the cutter assembly 510 and the winding needle assembly 320 rotate at the same angular velocity during the process of cutting the diaphragm 10. At the same time, the rack mounting plate 5224 can increase the connection area between the arc-shaped rack 5223 and the first linear drive unit 521, ensuring that the arc-shaped rack 5223 is stably installed on the first linear drive unit 521, thereby ensuring that the arc-shaped rack 5223 stably drives the first linear drive unit 521 to rotate.

[0055] Further optionally, the first rotary drive unit 522 further includes a drive fixing plate 5225, an arcuate guide rail 5226 and an arcuate slider 5227, wherein the drive fixing plate 5225 is used to install the second drive source 5221, the arcuate slider 5227 is matched with the arcuate guide rail 5226, the arcuate guide rail 5226 is connected to the drive fixing plate 5225, and the arcuate slider 5227 is connected to the rack mounting plate 5224. It can be understood that the drive fixing plate 5225 is connected to the frame 100 and is used to fix the second drive source 5221 to ensure the installation stability of the second drive source 5221. In the process that the rack mounting plate 5224 rotates following the arcuate rack 5223, the movement of the arcuate slider 5227 on the arcuate guide rail 5226 can limit the rotation direction of the rack mounting plate 5224, thereby preventing the rack mounting plate 5224 from being stuck, so that the rack mounting plate 5224 can stably drive the first linear drive unit 521 to rotate.

[0056] Optionally, the linear transmission structure includes a first screw fixing seat 5212, the first screw fixing seat 5212 is connected to the housing of the first driving source 5211, and both ends of the first screw body 5213 are rotatably mounted on the first screw fixing seat 5212, and one end passes through the first screw fixing seat 5212 and is connected to the output shaft of the first driving source 5211. The first screw nut 5214 is threadedly connected to the first screw body 5213 and is connected to the cutter assembly 510. It can be understood that in the actual working process, the first driving source 5211 drives the first screw body 5213 to rotate, and the two ends of the first screw body 5213 are rotatably connected to the first screw fixing seat 5212, respectively, which can ensure that the first screw body 5213 rotates stably under the drive of the first driving source 5211. The first screw body 5213 is equipped with a first screw nut 5214. During the rotation of the first screw body 5213, the first screw nut 5214 can drive the cutter assembly 510 to move along the axial direction of the first screw body 5213, thereby driving the cutter assembly 510 to cut the diaphragm 10. The screw nut pair composed of the first screw nut 5214 and the first screw body 5213 has good motion accuracy and is easy to control, thereby ensuring stable and accurate compression and relaxation of the winding needle assembly 320. Of course, it should be noted that, in other embodiments of the present invention, the first driving source 5211 can also be directly a cylinder, an electric push rod or other structures of a motor-driven gear 5222 rack, and is not limited to the driving structure described above.

[0057] It should be noted that, in other embodiments of the present invention, the cutter drive assembly 520 can be directly formed into a six-axis robotic arm, which can achieve the same driving function as the first rotational drive unit 522 and the first linear drive unit 521 by controlling the position of the end of the six-axis robotic arm during actual movement.

[0058] refer to Fig.10 and Fig.11 As shown, the cutter assembly 510 includes a cutter fixing seat 511, a floating pressure head 512, a first elastic member 513 and a cutter body 514. The cutter fixing seat 511 is connected to the first screw nut 5214. The floating pressure head 512 can be slidably installed on the cutter fixing seat 511. The floating pressure head 512 has a pressure roller body 5121 that stops at the diaphragm 10. The pressure roller bodies 5121 are arranged in pairs. One end of the first elastic member 513 stops at the cutter fixing seat 511, and the other end stops at the floating pressure head 512. The cutter body 514 is fixedly connected to the cutter fixing seat 511 and is located between the pressure roller bodies 5121 arranged in pairs. It can be understood that, in the process of the first linear drive unit 521 driving the cutter fixing seat 511 to move toward the direction close to the diaphragm 10, the two pressure roller bodies 5121 on the floating pressure head 512 first contact the diaphragm 10 to press the diaphragm 10, and at this time, the cutter body 514 is not in contact with the diaphragm 10; when the first linear drive unit 521 drives the cutter fixing seat 511 to continue to move, since the pressure roller body 5121 has stopped on the winding needle assembly 320 at this time, the first elastic member 513 is compressed when the cutter fixing seat 511 continues to move, and the cutter body 514 extends out of the two pressure roller bodies 5121 to cut the diaphragm 10. This cutting method in which the pressure roller body 5121 first presses the diaphragm 10 and the cutter body 514 then cuts the diaphragm 10 can make the end face of the diaphragm 10 more neat, thereby improving the cutting quality.

[0059] Optionally, the floating pressure head 512 includes a roller connection seat 5122, a sliding shaft 5123 and a roller connection shaft 5124, one end of the sliding shaft 5123 is connected to the roller connection seat 5122, and the other end is inserted into the cutter fixing seat 511, and the first elastic member 513 is sleeved on the sliding shaft 5123, the roller connection shafts 5124 are arranged in pairs, and the paired roller connection shafts 5124 are respectively connected to two oppositely arranged side walls of the roller connection seat 5122, and both ends of the roller body 5121 are rotatably connected to the paired roller connection shafts 5124. It can be understood that the roller body 5121 is supported by the paired roller connection shafts 5124 to ensure that the roller body 5121 rotates around the roller connection shafts 5124 during the transportation of the diaphragm 10, so as to prevent the roller body 5121 from affecting the normal transportation of the diaphragm 10. The additional sliding shaft 5123 can guide the movement direction of the pressure roller connecting seat 5122 to prevent the floating pressure head 512 from getting stuck, and can also support the first elastic member 513 to prevent the first elastic member 513 from bending.

[0060] Further optionally, a roller bearing 5125 is provided on the roller connecting shaft 5124, and the outer ring of the roller bearing 5125 abuts against the roller body 5121. Thus, the friction between the roller body 5121 and the roller connecting shaft 5124 can be reduced, making it easier for the roller body 5121 to rotate, and preventing the roller body 5121 from affecting the normal transportation of the diaphragm 10.

[0061] Further optionally, a linear bearing 517 is provided on the cutter fixing seat 511, and the sliding shaft 5123 is passed through the linear bearing 517. The additional linear bearing 517 can, on the one hand, limit the sliding direction of the sliding shaft 5123 to prevent the floating pressure head 512 from getting stuck relative to the pressure roller connecting seat 5122, and on the other hand, can reduce the friction between the sliding shaft 5123 and the cutter fixing seat 511, thereby extending the service life of the sliding shaft 5123. It should be supplemented that, in the embodiment of the present invention, the number of sliding shafts 5123 can be selected according to actual needs. Fig.10 and Fig.11 There are two in the middle, and of course it can also be three or more.

[0062] Optionally, the cutter assembly 510 also includes a cutter connecting plate 515, an auxiliary pressure head 516 and a second elastic member. One end of the cutter connecting plate 515 is connected to the cutter fixing seat 511, and the other end is connected to the cutter body 514 through the cutter fixing block 518. The auxiliary pressure head 516 can be slidably installed on the cutter connecting plate 515 in a direction perpendicular to the sliding direction of the floating pressure head 512. The auxiliary pressure head 516 has a plurality of auxiliary pressure rollers 5161 that stop at the diaphragm 10. One end of the second elastic member stops at the cutter connecting plate 515, and the other end stops at the auxiliary pressure head 516. It can be understood that, during the process of the cutter body 514 cutting the diaphragm 10, the auxiliary pressure roller 5161 of the auxiliary pressure head 516 stops on the diaphragm 10. Due to the presence of the second elastic member, the auxiliary pressure head 516 can float along the direction of transportation of the diaphragm 10 during the transportation of the diaphragm 10, which facilitates the cutter body 514 to cut the diaphragm 10 and helps to improve the flatness of the cut surface of the diaphragm 10.

[0063] Optionally, the auxiliary pressure head 516 includes a floating plate 5162 and a floating shaft 5163, one end of the floating plate 5162 is provided with a plurality of mounting grooves, each of which is provided with a rotatable auxiliary pressure roller 5161, one end of the floating shaft 5163 is connected to the floating plate 5162, and the other end is passed through the cutter connecting plate 515, and the second elastic member is sleeved on the floating shaft 5163. It can be understood that the additional floating plate 5162 can make multiple auxiliary pressure rollers 5161 stop against the diaphragm 10 when the diaphragm 10 is cut, which is convenient for the cutter body 514 to cut the diaphragm 10, and is conducive to improving the flatness of the cut surface of the diaphragm 10. The additional floating shaft 5163, on the one hand, can limit the movement direction of the floating plate 5162 to avoid the auxiliary pressure head 516 from getting stuck, and on the other hand, can support the second elastic member to avoid the bending of the second elastic member.

[0064] Further optionally, an oil-free bushing is provided on the cutter connecting plate 515, and the floating shaft 5163 is passed through the oil-free bushing. The additional oil-free bushing can limit the sliding direction of the floating shaft 5163 on the one hand, avoiding the floating pressure head 512 from getting stuck relative to the pressure roller connecting seat 5122, and on the other hand can reduce the friction between the floating shaft 5163 and the cutter connecting plate 515, thereby extending the service life of the floating shaft 5163. It should be supplemented that in the embodiment of the present invention, the number of floating shafts 5163 can be selected according to actual needs.

[0065] refer to Fig.12 and Fig.13As shown, the rotating body 200 includes a rotating shaft 220, a rotating disk 210 and two limiting rods 230, one end of the rotating shaft 220 passes through the rotating disk 210 and is rotatably connected to the frame 100. One end of the limiting rod 230 is connected to the rotating disk 210, and the other end is provided with a positioning member 231 that cooperates with the positioning module 700. The frame 100 includes a support panel 110, a first support seat 120, a second support seat 160 and a support connection seat 130. The support panel 110 is provided with an installation hole that cooperates with the rotating disk 210, the first support seat 120 is spaced apart from the support panel 110, the first support seat 120 is provided with a first rotating hole that cooperates with the rotating shaft 220, and the first bearing 140 is installed in the first rotating hole, one end of the support connecting seat 130 is connected to the support panel 110, and the other end is connected to the first support seat 120, the second support seat 160 is spaced apart from the support connecting seat 130, the second support seat 160 and the support connecting seat 130 are respectively located on both sides of the support panel 110, the second support seat 160 is provided with a second rotating hole that cooperates with the rotating shaft 220, and the second bearing 170 is installed in the second rotating hole; and the second support seat 160 is used to install the driving module 400. It is understandable that the support panel 110 is used for the mounting hole that cooperates with the rotating disk 210. In the process of the driving module 400 driving the entire rotating body 200 to rotate, the rotating wheel on the rotating disk 210 can rotate and revolve on the inner wall of the mounting hole, thereby ensuring the rotation accuracy of the rotating body 200. The first support seat 120 and the second support seat 160 respectively realize the rotation support of the rotating shaft 220, which can ensure that the driving module 400 drives the rotating body 200 to rotate stably. The first bearing 140 and the second bearing 170 are respectively arranged at both ends of the rotating shaft 220. Since the diameter of the rotating shaft 220 is smaller than that of the rotating disk 210, the diameters of the first bearing 140 and the second bearing 170 do not need to be too large, and since the rotating wheel on the rotating disk 210 can improve the rotation accuracy of the rotating body 200, the requirements for the accuracy of the first bearing 140 and the second bearing 170 themselves and the assembly accuracy are also relatively reduced, which is beneficial to cost.

[0066] Optionally, a first bearing fixing plate 150 for fixing the first bearing 140 is installed on the first support seat 120, and a second bearing fixing plate 180 for fixing the second bearing 170 is installed on the second support seat 160. It can be understood that the first bearing fixing plate 150 and the second bearing fixing plate 180 can prevent the first bearing 140 and the second bearing 170 from axially moving along the rotating shaft 220, thereby ensuring the installation stability of the first bearing 140 and the second bearing 170. It should be supplemented that, in the embodiment of the present invention, the parameters of the first bearing 140 and the second bearing 170 can be selected according to actual needs, and the relevant parameters of the first bearing 140 and the second bearing 170 are not limited here.

[0067] Optionally, there are two limit rods 230, and the two limit rods 230 are symmetrically arranged about the rotation axis of the rotating shaft 220. It can be understood that in the actual working process, one of the two winding needle assemblies 320 is located at the winding position and the other is located at the unloading position. The provision of two limit rods 230 can facilitate the positioning of the rotating body 200 at different positions, thereby further improving the working reliability of the battery cell winding device.

[0068] refer to Fig.12 and Fig.13 As shown, the drive module 400 includes a third drive member 410, a belt transmission assembly 420, a slip ring mounting seat 430 and a slip ring body 440. The third drive member 410 is installed on the second support seat 160. The driving wheel 421 of the belt transmission assembly 420 is connected to the output shaft of the third drive member 410. The driven wheel 422 of the belt transmission assembly 420 is connected to the other end of the rotating shaft 220. The driving wheel 421 and the driven wheel 422 are both matched with the transmission belt 423. The slip ring mounting seat 430 is installed on the second support seat 160. The slip ring mounting seat 430 has a through hole. The slip ring body 440 is rotatably connected to the slip ring mounting seat 430 and is connected to the rotating shaft 220. The slip ring body 440 is provided with a wire outlet hole. It is understandable that the third driving member 410 can be a servo motor or other rotating driving member. The third driving member 410 drives the rotating shaft 220 through the belt transmission assembly 420, which ensures the stable driving of the rotating shaft 220 and helps reduce the manufacturing cost of the driving module 400. In order to meet the power-on requirements of the winding needle driving assembly 310, the winding needle driving assembly 310 needs to have a wire, and auxiliary structures such as an air pipe need to be set on the winding needle assembly 320. The slip ring body 440 is fixed to the second support seat 160 through the slip ring mounting seat 430, and the slip ring body 440 is provided with a wire outlet hole, which facilitates the passage of structures such as wires or air pipes, and avoids the phenomenon of cables or air pipes being entangled when the third driving member 410 drives the rotating body 200 to move.

[0069] Optionally, the output shaft of the third driving member 410 is connected to the input end of the second reducer 450, and the output end of the second reducer 450 is connected to the driving wheel 421. The deceleration and torque increase of the second reducer 450 can ensure that the third driving member 410 stably drives the rotating body 200 to rotate. Further optionally, the housing of the second reducer 450 is installed on the second support seat 160 through the second deceleration mounting plate 460, thereby facilitating the installation of the second reducer 450. The connection method between the second deceleration mounting plate 460 and the second support seat 160 can be any detachable connection method such as screw connection, snap connection, etc., which can be selected according to actual needs.

[0070] It should be additionally explained here that in other embodiments of the present invention, the driving module 400 can also be directly formed into a rotating cylinder to drive the rotating body 200 to rotate, or it can be a motor driving a gear assembly to drive the rotating body 200 to rotate, and is not limited to the movement form of the third driving member 410 driving the belt transmission assembly 420 in this embodiment.

[0071] refer to Figure 14-16 As shown, the needle winding drive assembly 310 includes a second linear drive unit 311 and a second rotation drive unit 312, and the second linear drive unit 311 includes a first drive member 3111, a first fixed seat 3112, a second fixed seat 3113, a lead screw 3114 and a slide 3115. The two ends of the lead screw 3114 are rotatably connected to the first fixed seat 3112 and the second fixed seat 3113, respectively, and one end of the lead screw 3114 passes through the first fixed seat 3112 and is connected to the first drive member 3111 through a coupling 3116, and the slide 3115 is threadedly connected to the lead screw 3114, and the slide 3115 is connected to the second rotation drive unit 312. The second rotation drive unit 312 is connected to the needle winding assembly 320. It is understandable that, in the actual working process, the first driving member 3111 drives the lead screw 3114 to rotate, and the two ends of the lead screw 3114 are rotatably connected to the first fixed seat 3112 and the second fixed seat 3113, respectively, so as to ensure that the lead screw 3114 rotates stably under the drive of the first driving member 3111. The lead screw 3114 is equipped with a slide 3115. During the rotation of the lead screw 3114, the slide 3115 can drive the second rotary drive unit 312 to move along the axial direction of the lead screw 3114, thereby driving the needle winding assembly 320 to advance or withdraw the needle. The lead screw nut pair composed of the slide 3115 and the lead screw 3114 has good motion accuracy and is easy to control, thereby ensuring that the needle winding assembly 320 can move stably and accurately during the process of advancing or withdrawing the needle. Of course, it should be supplemented that in other embodiments of the present invention, the second linear drive unit 311 can also be directly a cylinder, an electric push rod or other structures of a motor-driven gear 5222 rack, and is not limited to the drive structure described above.

[0072] Optionally, the rotating shaft 220 is further provided with a first slide rail 3117, and the first slide rail 3117 is provided with a first slider 3118, and the first slider 3118 is connected to the second rotating driving unit 312. It can be understood that when the second linear driving unit 311 drives the needle winding assembly 320 to make a linear motion, the first slider 3118 can slide on the first slide rail 3117, thereby limiting the movement of the needle winding assembly 320 and preventing the needle winding assembly 320 from getting stuck during the needle insertion or withdrawal process.

[0073] Optionally, the second rotation drive unit 312 includes a second drive member 3121 and a winding needle mounting seat 3122, the second drive member 3121 is connected to the winding needle assembly 320, the winding needle mounting seat 3122 is connected to the power output end, and the winding needle mounting seat 3122 has an installation cavity, and the two ends of the installation cavity are open, and the winding needle assembly 320 includes a winding needle shaft 321 and a winding needle body 322, the winding needle shaft 321 is rotatably arranged in the installation cavity, the winding needle body 322 is connected to one end of the winding needle shaft 321 extending out of the installation cavity, and a third bearing 3123 is arranged between the winding needle shaft 321 and the inner side wall of the installation cavity. It can be understood that the winding needle assembly 320 is split into the winding needle shaft 321 and the winding needle body 322, and the winding needle body 322 can be replaced according to actual needs during actual work, thereby improving the compatibility characteristics of the battery cell winding device. A third bearing 3123 is provided between the winding needle shaft 321 and the inner wall of the installation cavity. The support of the two third bearings 3123 can ensure that the winding needle shaft 321 can rotate stably under the drive of the second driving member 3121, and external dirt will not enter the installation cavity, avoiding friction between the rotating shaft 220 and the winding needle mounting seat 3122, which is beneficial to extending the service life of the second rotation drive unit 312.

[0074] Further optionally, a stop step is provided on the winding needle shaft 321 for mounting the third bearing 3123, and the third bearing 3123 near the second driving member 3121 is fixed to the winding needle shaft 321 through a bearing fixing nut 3124. Thus, the third bearing 3123 can be prevented from moving relative to the winding needle shaft 321.

[0075] Further optionally, the second drive member 3121 cooperates with the winding needle rotating shaft 321 through the first reducer 3125. The first reducer 3125 can achieve speed reduction and torque increase, thereby ensuring that the second drive member 3121 can stably drive the winding needle assembly 320 to rotate. Further optionally, the housing of the first reducer 3125 is installed on the winding needle mounting seat 3122 through the first reduction mounting plate 3126, thereby facilitating the installation of the second reducer 450. The connection method between the second reduction mounting plate 460 and the winding needle mounting seat 3122 can be any detachable connection method such as screw connection, snap connection, etc., which can be selected according to actual needs.

[0076] refer to Fig.17As shown, the positioning module 700 includes a positioning mounting seat 710, a positioning driving member 720 and a positioning plate 730. The positioning mounting seat 710 is connected to the frame 100, the positioning driving member 720 is installed on the positioning mounting seat 710, and the positioning plate 730 is connected to the positioning driving member 720, and the positioning plate 730 has a positioning groove 731 that matches the positioning member 231. It can be understood that in the actual working process, the positioning driving member 720 drives the positioning plate 730 to move, and when the positioning groove 731 matches the positioning member 231, the rotating body 200 can be positioned. The positioning driving member 720 drives the positioning plate 730 to move so that the rotating body 200 can be released when the positioning groove 731 is separated from the positioning member 231. This positioning and releasing method is very simple, which is conducive to ensuring the reliability of the positioning of the rotating body 200.

[0077] Optionally, the positioning drive member 720 is a cylinder, and cooperates with the positioning plate 730 through a floating joint 740. Thus, the movement of the positioning plate 730 is facilitated, and the structure of the positioning module 700 is simplified, which is conducive to reducing the manufacturing cost of the positioning module 700.

[0078] Optionally, the positioning module 700 also includes a slide rail fixing plate 780, which is connected to the positioning mounting seat 710 through a positioning adapter plate 790, and a second slide rail 750 is provided on the slide rail fixing plate 780, and a second slider 760 is provided on the second slide rail 750, and the second slider 760 cooperates with the positioning plate 730. It can be understood that during the process of the positioning drive member 720 driving the positioning plate 730 to move, the second slider 760 can slide on the second slide rail 750, thereby playing a guiding and limiting role in the movement direction of the positioning plate 730, and avoiding the positioning plate 730 from being stuck due to skewness. Further optionally, the positioning drive member 720 is fixed on the slide rail fixing plate 780 through a driving mounting plate 770, thereby facilitating the installation of the positioning drive member 720 and helping to improve the connection stability of the positioning drive member 720.

[0079] refer to Fig.18As shown, the lock nozzle module 800 includes a lock nozzle driving member 810, a lock nozzle connecting seat 820 and a lock nozzle body 830. The lock nozzle driving member 810 is installed on the rotating shaft 220. The lock nozzle connecting seat 820 cooperates with the lock nozzle driving member 810 in transmission and can move axially along the winding needle assembly 320 under the drive of the lock nozzle driving member 810. The lock nozzle body 830 is rotatably connected to the lock nozzle connecting seat 820, and the lock nozzle body 830 can stop at the end of the winding needle body 322 away from the winding needle rotating shaft 321. It can be understood that in the actual working process, the lock nozzle driving member 810 drives the lock nozzle connecting seat 820 to move, so that the lock nozzle body 830 stops at the end of the winding needle body 322 away from the winding needle shaft 321. Since the lock nozzle body 830 is rotatably connected to the lock nozzle connecting seat 820, when the second driving member 3121 drives the winding needle shaft 321 to rotate, the lock nozzle body 830 can move synchronously with the winding needle shaft 321 to avoid relative friction between the two, thereby extending the working life of the lock nozzle module 800.

[0080] Optionally, the lock module 800 further includes a second screw fixing seat 840, which is connected to the housing of the lock drive 810, and the two ends of the second screw body 850 are rotatably mounted on the second screw fixing seat 840, and one end passes through the second screw fixing seat 840 and is connected to the output shaft of the lock drive 810. The second screw nut 860 is threadedly connected to the second screw body 850 and is connected to the lock connection seat 820. It is understandable that, in the actual working process, the lock nozzle driving member 810 drives the second screw body 850 to rotate, and the two ends of the second screw body 850 are rotatably connected to the second screw fixing seat 840, respectively, which can ensure that the second screw body 850 rotates stably under the drive of the lock nozzle driving member 810. The second screw body 850 is equipped with a second screw nut 860. During the rotation of the second screw body 850, the second screw nut 860 can drive the lock nozzle connecting seat 820 along the axial movement of the second screw body 850, thereby realizing the compression or release of the winding needle assembly 320. The screw nut pair composed of the second screw nut 860 and the second screw body 850 has good motion accuracy and is easy to control, thereby ensuring the stable and accurate compression and release of the winding needle assembly 320. Of course, it should be supplemented that in other embodiments of the present invention, the lock nozzle driving member 810 can also be directly a cylinder, an electric push rod or other structures of the motor-driven gear 5222 rack, and is not limited to the driving structure described above.

[0081] Optionally, a fourth bearing 890 is provided between the lock mouth body 830 and the lock mouth connecting seat 820, and the fourth bearing 890 is fixed by the bearing outer fixing ring 870 and the bearing inner fixing ring 880. It is understandable that the additional fourth bearing 890 can reduce the friction between the lock mouth body 830 and the lock mouth connecting seat 820, and prevent contaminants from entering the matching clearance between the lock mouth body 830 and the lock mouth connecting seat 820, thereby further avoiding the friction between the lock mouth body 830 and the lock mouth connecting seat 820, and extending the service life of the lock mouth module 800.

[0082] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery cell winding device, characterized in that: include: Rack(100); A rotating body (200), the rotating body (200) being rotatably mounted on the frame (100); Two needle winding modules (300), each of which is mounted on the rotating body (200), and each of which comprises a needle winding drive assembly (310) and a needle winding assembly (320), wherein the needle winding drive assembly (310) is used to drive the needle winding assembly (320) to rotate and the needle winding assembly (320) to move axially; A driving module (400), the driving module (400) being mounted on the frame (100) and connected to the rotating body (200) to drive the rotating body (200) to rotate; A diaphragm roller (600), wherein the diaphragm roller (600) is mounted on the frame (100); A flying cutting module (500), the flying cutting module (500) being mounted on the frame (100), the flying cutting module (500) comprising a cutter assembly (510) and a cutter driving assembly (520), the cutter driving assembly (520) being used to drive the cutter assembly (510) to move in a direction approaching or away from the needle rolling module (300), and capable of driving the cutter assembly (510) to rotate; The diaphragm (10) abuts against the diaphragm roller (600) and is connected to one of the needle winding modules (300). During the process of cutting the diaphragm (10), the driving module (400) drives the rotating body (200) to rotate so that the other needle winding module (300) abuts against the diaphragm (10). When the cutting knife assembly (510) moves in a direction close to the diaphragm (10), it has the same angular velocity and rotation center as the needle winding module (300) abutting against the diaphragm (10).

2. The battery core winding device according to claim 1, characterized in that: The cutter drive assembly (520) comprises: A first linear drive unit (521), the first linear drive unit (521) comprising a first drive source (5211) and a linear transmission structure, the power input end of the linear transmission structure being connected to the output shaft of the first drive source (5211), and the power output end of the linear transmission structure being connected to the cutter assembly (510); A first rotational drive unit (522), wherein the first rotational drive unit (522) comprises a second drive source (5221) and a rotational transmission structure, wherein a power input end of the rotational transmission structure is connected to an output shaft of the second drive source (5221), and a power output end of the rotational transmission structure is connected to the first linear drive unit (521).

3. The battery core winding device according to claim 2, characterized in that: The power input and output ends of the rotary transmission structure include a driving gear (5222), and the output end of the rotary transmission structure includes an arc-shaped rack (5223), the arc-shaped rack (5223) is meshed with the driving gear (5222), the driving gear (5222) is connected to the output shaft of the second driving source (5221), and the arc-shaped rack (5223) is connected to the first linear driving unit (521) via a rack mounting plate (5224).

4. The battery core winding device according to claim 3, characterized in that: The first rotation driving unit (522) further comprises: A driving fixing plate (5225), wherein the driving fixing plate (5225) is used to install the second driving source (5221); An arc-shaped guide rail (5226) and an arc-shaped slider (5227), wherein the arc-shaped slider (5227) cooperates with the arc-shaped guide rail (5226), one of the arc-shaped guide rail (5226) and the arc-shaped slider (5227) is connected to the driving fixed plate (5225), and the other of the arc-shaped guide rail (5226) and the arc-shaped slider (5227) is connected to the rack mounting plate (5224).

5. The battery core winding device according to claim 1, characterized in that: The cutter assembly (510) comprises: A cutter fixing seat (511), wherein the cutter fixing seat (511) is connected to the cutter driving assembly (520); A floating pressure head (512), the floating pressure head (512) being slidably mounted on a cutter fixing seat (511), the floating pressure head (512) comprising a pressure roller body (5121) abutting against the diaphragm (10), the pressure roller bodies (5121) being arranged in pairs; A first elastic member (513), one end of the first elastic member (513) abutting against the cutter fixing seat (511), and the other end of the first elastic member (513) abutting against the floating pressure head (512); A cutter body (514), the cutter body (514) is fixedly connected to the cutter fixing seat (511) and is located between the pressure roller bodies (5121) arranged in pairs; wherein: When the cutter drive assembly (520) drives the cutter assembly (510) to move, the pressure roller body (5121) contacts the diaphragm (10) before the cutter body (514).

6. The battery cell winding device according to claim 5, characterized in that: The floating pressure head (512) further comprises: Press roller connecting seat (5122); A sliding shaft (5123), one end of the sliding shaft (5123) is connected to the pressure roller connecting seat (5122), the other end of the sliding shaft (5123) is passed through the cutter fixing seat (511), and the first elastic member (513) is sleeved on the sliding shaft (5123); The pressure roller connecting shaft (5124) is arranged in pairs, and the pressure roller connecting shaft (5124) arranged in pairs are respectively connected to two opposite side walls of the pressure roller connecting seat (5122), and the two ends of the pressure roller body (5121) are rotatably connected to the pressure roller connecting shaft (5124) arranged in pairs.

7. The battery cell winding device according to claim 5, characterized in that: The cutter assembly (510) further comprises: A cutter connecting plate (515), one end of the cutter connecting plate (515) is connected to the cutter fixing seat (511), and the other end is connected to the cutter body (514); An auxiliary pressure head (516) is slidably mounted on the cutter connecting plate (515) in a direction perpendicular to the sliding direction of the floating pressure head (512), and the auxiliary pressure head (516) has a plurality of auxiliary pressure rollers (5161) that abut against the diaphragm (10); A second elastic member, one end of the second elastic member abuts against the cutter connecting plate (515), and the other end abuts against the auxiliary pressing head (516).

8. The battery cell winding device according to claim 7, characterized in that: The auxiliary pressure head (516) comprises: A floating plate (5162), wherein one end of the floating plate (5162) is provided with a plurality of mounting grooves, and a rotatable auxiliary pressure roller (5161) is disposed in each of the mounting grooves; A floating shaft (5163), one end of which is connected to the floating plate (5162), and the other end of which is passed through the cutter connecting plate (515), and the second elastic member is sleeved on the floating shaft (5163).

9. The battery core winding device according to any one of claims 1 to 8, characterized in that: The rotating body (200) is provided with a positioning member (231); the battery core winding device further comprises a positioning module (700), the positioning module (700) is installed on the frame (100), the positioning module (700) has a positioning position for positioning the positioning member (231) and a releasing position for releasing the positioning member (231), and when the positioning module (700) positions the positioning member (231), the rotating body (200) is fixed relative to the frame (100).

10. The battery core winding device according to any one of claims 1 to 8, characterized in that: The battery cell winding device also includes a locking nozzle module (800), which is installed on the rotating body (200). The locking nozzle module (800) has a pressing state for pressing the winding needle assembly (320) and a disengaging state for disengaging from the winding needle assembly (320). When the locking nozzle module (800) is in the pressing state, the battery cell on the winding needle assembly (320) is fixed relative to the winding needle assembly (320).

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