Battery cell winding mechanism, battery cell winding device and winding machine

Abstract

The present invention provides a battery cell winding mechanism, a battery cell winding device and a winding machine. The battery cell winding mechanism includes: a winding needle assembly; a slide, which is rotatably connected to the winding needle assembly; a first power mechanism, which includes a rotating part, which is connected to the winding needle assembly, and the rotating part is rotatably connected to the slide, so that the first power mechanism can drive the winding needle assembly to rotate; a second power mechanism, which includes a linear motion part, which is connected to the slide to drive the winding needle assembly to move linearly; a guide mechanism, which is slidably connected to the slide on opposite sides of the linear motion part to guide the sliding direction of the slide. The battery cell winding mechanism, the winding device and the winding machine can guide the linear motion of the winding needle assembly on opposite sides of the linear motion part through the guide mechanism, so that the guide mechanism can bear the gravity of the slide during the linear motion of the winding needle assembly, reduce the load of the second power mechanism during movement, and improve the service life of the second power mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and in particular to a battery cell winding mechanism, a battery cell winding device and a winding machine. Background Art

[0002] Lithium-ion batteries have the advantages of high energy, small size, long storage life, and no pollution, and are widely used in power batteries and mobile phone batteries. In the production process of lithium batteries, the production of battery cells needs to be completed in the winding station, gluing station and unloading station of the winding machine in sequence.

[0003] In the related prior art, a winding motor is separately provided at the corresponding winding station to drive the winding of the battery cell, and a separately provided unloading motor is used at the corresponding unloading station to realize the unloading and pushing of the winding needle. Figure 1 As shown, the needle pushing and pulling adopts a screw mechanism 100 ″. When the screw mechanism 100 ″ is pushing and pulling the needle, the screw mechanism 100 ″ will be subjected to a partial radial load, which affects the service life of the screw mechanism 100 ″. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the screw mechanism is easily subjected to radial loads during linear motion, thus affecting its service life, thereby providing a battery cell winding mechanism, a battery cell winding device and a winding machine in which the screw rod is not subjected to radial loads.

[0005] In order to solve the above problems, the present invention provides a battery cell winding mechanism, including: a winding needle assembly; a sliding seat, rotatably connected to the winding needle assembly; a first power mechanism, including a rotating part, the rotating part is connected to the winding needle assembly, and the rotating part is rotatably connected to the sliding seat, so that the first power mechanism can drive the winding needle assembly to rotate; a second power mechanism, including a linear motion part, the linear motion part is connected to the sliding seat to drive the winding needle assembly to move linearly; a guide mechanism, slidably connected to the sliding seat on opposite sides of the linear motion part to guide the sliding direction of the slide.

[0006] Optionally, optionally, the guide mechanism includes: a first guide rod; a second guide rod, arranged opposite to the first guide rod; wherein the first guide rod and the second guide rod are respectively located on opposite sides of the linear motion part, and the first guide rod and the second guide rod are both connected to the first support seat and the second support seat.

[0007] Optionally, a center line of the first guide rod, a center line of the linear motion portion, and a center line of the second guide rod are located in a first plane.

[0008] Optionally, a center line of the rotating portion and a center line of the linear motion portion are located in a second plane, and the second plane is perpendicular to the first plane.

[0009] Optionally, the first power mechanism also includes: a first driving mechanism, having a first rotation output part; a transmission mechanism, connected to the first rotation output part; a sliding sleeve, connected to the transmission mechanism; wherein one end of the rotating part is transmission-connected to the transmission mechanism, the other end of the rotating part is connected to the winding needle assembly, and the sliding sleeve is axially slidably matched with the rotating part.

[0010] Optionally, the transmission mechanism includes: a driving gear connected to the first rotation output part; a driven gear meshing with the driving gear, and the driven gear is rotatable; wherein the sliding sleeve passes through the driven gear and is connected to the driven gear.

[0011] Optionally, the second power mechanism includes: a second driving mechanism having a second rotation output part; wherein, the linear motion part comprises a screw and a nut, one end of the screw is connected to the second rotation output part, the nut is threadedly connected to the screw, and the nut is connected to the slide seat.

[0012] Optionally, the needle winding assembly includes: a needle winding mechanism including a plurality of needle winding bodies; a connecting member connected to the needle winding mechanism and the rotating part, and the connecting member is rotatably connected to the slide seat.

[0013] The present invention also provides a battery cell winding device, comprising: a base; a rotating support seat, rotatably connected to the base; a battery cell winding mechanism as described above, connected to the rotating support seat, and the battery cell winding mechanism is arranged in plurality.

[0014] The present invention also provides a winding machine, comprising: a winding device as described above; an unwinding device, configured to load the battery cell roll onto the winding device for winding to form a battery cell; and a unloading device, configured to remove the formed battery cell from the winding device for unloading.

[0015] The present invention has the following advantages:

[0016] 1. By utilizing the technical solution of the present invention, the two opposite sides of the slide are respectively slidably connected with the guide mechanism, and the guide mechanism can guide the linear motion of the needle winding assembly on the two opposite sides of the linear motion part, so that the guide mechanism can bear the gravity of the slide during the linear motion of the needle winding assembly, thereby reducing the load of the linear motion part during the motion and increasing the service life of the second power mechanism.

[0017] 2. The first guide rod and the second guide rod are used as linear guide rods to achieve relative guidance, which has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the screw mechanism bearing gravity in the prior art;

[0020] Figure 2 It is a schematic side view of the structure of a battery cell winding mechanism according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 AA section structural diagram;

[0022] Figure 4 for Figure 3 The enlarged structural diagram at C in FIG.

[0023] Figure 5 for Figure 3 The enlarged structural diagram at D in FIG.

[0024] Figure 6 It is a side view structural diagram of the cooperation between the rotating part and the sliding sleeve of the battery core winding mechanism in one embodiment of the invention;

[0025] Figure 7 for Figure 2 BB section structure schematic diagram;

[0026] Figure 8 for Figure 7 The enlarged structural diagram at E in FIG.

[0027] Fig. 9 for Figure 7 The enlarged structural diagram at F in FIG.

[0028] Fig.10 Schematic diagram of the force on the lead screw of a battery cell winding mechanism according to an embodiment of the invention.

[0029] Description of reference numerals:

[0030] 100", screw mechanism;

[0031] 100, battery cell winding mechanism; 110, winding needle assembly; 111, winding needle mechanism; 113, connecting piece; 120, sliding seat; 130, first power mechanism; 131, first driving mechanism; 133, transmission mechanism, 1331, driving gear; 1333, driven gear; 135, sliding sleeve; 1351, guide protrusion; 137, rotating part; 1371, sliding groove; 140, second power mechanism; 141, second driving mechanism; 143, linear motion part; 1431, screw rod; 1433, nut; 150, guiding mechanism; 151, first guide rod; 153, second guide rod; 160: first support seat; 170, second support seat; 180, third support seat; 181, mounting hole. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Application Overview

[0034] In the relevant prior art, the unloading and pushing needle of the winding needle of the winding machine is driven by an independent motor, and the pushing and pulling needle adopts a screw mechanism. A slider is provided on the screw to slide with the guide rail, and the slider is threadedly connected to the screw, so that when pushing and pulling the needle, the screw is subjected to partial radial load, affecting the life of the screw.

[0035] Exemplary battery cell winding mechanism

[0036] like Figure 2 and Figure 3 As shown, the battery cell winding mechanism 100 includes: a winding needle assembly 110, a slide 120, a first power mechanism 130, a second power mechanism 140 and a guide mechanism 150. The slide 120 is rotatably connected to the winding needle assembly 110, and the first power mechanism 130 includes a rotating portion 137, which is connected to the winding needle assembly 110, and the rotating portion 137 is rotatably connected to the slide 120, so that the first power mechanism 130 can drive the winding needle assembly 110 to rotate. The second power mechanism 140 includes a linear motion portion 143, which is connected to the slide 120 to drive the winding needle assembly 110 to move linearly. The guide mechanism 150 is slidably connected to the slide 120 on opposite sides of the linear motion portion 143 to guide the sliding direction of the slide 120.

[0037] The first power mechanism 130 can drive the winding needle assembly 110 to rotate through the rotating part 137. When the winding needle assembly 110 rotates, the winding of the battery cell can be completed, and when the winding needle assembly 110 moves linearly, the pushing or pulling operation of the winding needle assembly 110 can be realized. The winding needle assembly 110 is rotatably connected to the slide 120. When the second power mechanism 140 drives the slide 120 to drive the winding needle assembly 110 to move linearly through the linear motion part 143, the opposite sides of the slide 120 are respectively slidably connected to the guide mechanism 150. The guide mechanism 150 can guide the linear motion of the winding needle assembly 110 on the opposite sides of the linear motion part 143. During the synchronous rotation of the guide mechanism 150, the opposite sides of the linear motion part 143 can be alternately located below the linear motion part 143. Therefore, the radial force of the linear motion part 143 can be shared, thereby reducing the gravity borne by the linear motion part 143, so that the guide mechanism 150 can bear the gravity of the slide 120 during the linear motion of the winding needle assembly 110, thereby reducing the load of the linear motion part 143 of the second power mechanism 140 during movement, and improving the service life of the second power mechanism 140.

[0038] Furthermore, if Figure 3 As shown, the first power mechanism 130 further includes: a first driving mechanism 131, a transmission mechanism 133 and a sleeve 135. The first driving mechanism 131 has a first rotation output portion, the transmission mechanism 133 is connected to the first rotation output portion, and the sleeve 135 is connected to the transmission mechanism 133. Among them, one end of the rotating portion 137 is transmission-connected to the transmission mechanism 133, the other end of the rotating portion 137 is connected to the winding needle assembly 110, and the sleeve 135 and the rotating portion 137 are axially slidably matched.

[0039] The first driving mechanism 131 may be a servo motor, and the output shaft of the servo motor may be a first rotation output part for outputting a rotational torque. The rotating part 137 may be a ball spline shaft, and the transmission mechanism 133 is used to transmit power between the first rotation output part and the rotating part 137, so that the rotating part 137 can rotate. When the rotating part 137 rotates, the winding needle assembly 110 connected to the rotating part 137 rotates synchronously, so that the winding needle assembly 110 can be operated to wind the battery cell. Figure 5 As shown, the sliding sleeve 135 is sleeved on the rotating part 137, and the sliding sleeve 135 and the rotating part 137 slide axially, and a radial limiting structure is provided between the sliding sleeve 135 and the rotating part 137. When the sliding sleeve 135 is positioned, the rotating part 137 can only move axially, so that the winding needle assembly 110 connected to the rotating part 137 is axially displaced. The linear sliding of the sliding block is guided by the guide mechanism 150, so that the linear movement of the winding needle assembly 110 can be ensured.

[0040] Furthermore, if Figure 3As shown, the transmission mechanism 133 includes: a driving gear 1331 and a driven gear 1333, wherein the driving gear 1331 is connected to the first rotation output part, and the driven gear 1333 is meshed with the driving gear, and the driven gear 1333 is rotatable. Among them, the sliding sleeve 135 passes through the driven gear 1333 and is connected to the driven gear 1333.

[0041] The driving gear 1331 and the first rotating output part can rotate synchronously, and the driven gear 1333 is driven to rotate synchronously by the meshing of the driving gear 1331 and the driven gear 1333. The sliding sleeve 135 is at least partially connected to the driven gear 1333, wherein the sliding sleeve 135 penetrates the driven gear 1333, and the sliding sleeve 135 and the driven gear 1333 can be coaxially arranged. When the driven gear 1333 can rotate, the sliding sleeve 135 and the driven gear 1333 rotate synchronously. Since there is a radial limiting mechanism between the sliding sleeve 135 and the rotating part 137, the sliding sleeve 135 can drive the rotating part 137 to rotate synchronously, thereby driving the winding needle assembly 110 to rotate synchronously.

[0042] Furthermore, if Figure 6 As shown, a slide groove 1371 is axially provided on the outer surface of the rotating portion 137 , and the two slide grooves 1371 are arranged opposite to each other. A guide protrusion 1351 is axially provided on the inner surface of the sliding sleeve 135 , and the guide protrusion 1351 slides in cooperation with the slide groove 1371 .

[0043] The guide protrusion 1351 cooperates with the slide groove 1371 to form a radial limit structure, so that the sleeve 135 can drive the rotating part 137 to rotate synchronously with the driven gear 1333. When the slide seat 120 drives the winding needle assembly 110 to perform linear motion, the slide seat 120 will drive the rotating part 137 to move axially in the sleeve 135.

[0044] The second power mechanism 140 includes: a second driving mechanism 141 and a linear motion part 143 . The second driving mechanism 141 has a second rotation output part. The linear motion part 143 is connected to the second rotation output part. The linear motion part 143 is connected to the slide seat 120 .

[0045] like Figure 8 and Fig. 9 As shown, the linear motion part 143 includes a screw rod 1431 and a nut 1433 , one end of the screw rod 1431 is connected to the second rotation output part, the nut 1433 is threadedly connected to the screw rod 1431 , and the nut 1433 is connected to the slide seat 120 .

[0046] The second driving mechanism 141 may include a servo motor connected to the linear motion part 143 to drive the linear motion part 143 to perform linear motion, thereby driving the slide 120 connected to the linear motion part 143 to perform linear motion, and then the slide 120 can drive the winding needle assembly 110 to perform linear motion.

[0047] The screw rod 1431 may include a ball screw mechanism. One end of the screw rod 1431 is connected to the second rotation output portion of the second driving mechanism 141, and the other end of the screw rod 1431 is rotatable. The nut 1433 is sleeved on the screw rod 1431 and threadedly connected to the screw rod 1431, and the nut 1433 is connected to the slide 120. When the second driving mechanism 141 drives the screw rod 1431 to rotate through the second rotation output portion, the nut 1433 performs linear motion along the screw rod 1431, thereby driving the slide 120 to perform linear motion.

[0048] Furthermore, if Figure 3 As shown, the guide mechanism 150 includes: a first guide rod 151 and a second guide rod 153, and the second guide rod 153 is arranged opposite to the first guide rod 151. The second guide rod 153 and the first guide rod 151 are respectively located on opposite sides of the linear motion part 143. The battery cell winding device includes a first support seat 160 and a second support seat 170, and the second support seat 170 and the first support seat 160 are spaced apart and arranged opposite to each other, and the first guide rod 151 and the second guide rod 153 are both connected to the first support seat 160 and the second support seat 170.

[0049] like Figure 7 As shown, the first guide rod 151 and the second guide rod 153 are arranged relative to each other to limit the rotation of the slide 120, and the first guide rod 151 and the second guide rod 153 are respectively located on the opposite sides of the linear motion part 143. During the synchronous rotation of the guide mechanism 150, the first guide rod 151 or the second guide rod 153 is located below the linear motion part 143, and therefore, the radial force of the linear motion part 143 can be shared, thereby reducing the gravity borne by the linear motion part 143.

[0050] Furthermore, the center line of the first guide rod 151, the center line of the linear motion portion 143 and the center line of the second guide rod 153 are located in the first plane. It can be understood that the projections of the center line of the first guide rod 151, the center line of the linear motion portion 143 and the center line of the second guide rod 153 on the same plane are located on the same straight line. In one case, Fig.10As shown, the first plane can be a plumb plane. At this time, the first guide rod 151 and the second guide rod 153 are respectively located below and above the linear motion part 143. Therefore, under the action of gravity, the first guide rod 151 located below can maximize the weight of the linear motion part 143, further improving the life of the linear motion part 143.

[0051] Two through holes are arranged in the above-mentioned slide 120, and the center lines of the two through holes are located in the same plane, that is, the axial projections of the center lines of the two through holes on the same plane can be located on a straight line. The first guide rod 151 and the second guide rod 153 are respectively matched with the corresponding through hole clearances. One end of the first guide rod 151 is connected to the first support seat 160, and the other end of the first guide rod 151 is connected to the second support seat 170. One end of the second guide rod 153 is connected to the first support seat 160, and the other end of the second guide rod 153 is connected to the second support seat 170. It can be understood that the slide 120 and the nut 1433 are both located between the first support seat 160 and the second support seat 170.

[0052] Furthermore, the center line of the rotating portion 137 and the center line of the linear motion portion 143 are located in a second plane, and the second plane is perpendicular to the first plane. Fig.10 As shown, the projections of the center line of the rotating part 137 and the center line of the linear motion part 143 in the same plane are located on the same straight line, and the projections of the center line of the first guide rod 151, the center line of the linear motion part 143 and the center line of the second guide rod 153 in the same plane are located on the same straight line, and the two straight lines are perpendicular to each other, so that the first guide rod 151 and the second guide rod 153 can also share the radial force of the rotating part 137.

[0053] The second driving mechanism 141 drives the screw rod 1431 to rotate, and the nut 1433 threadedly connected to the screw rod 1431 drives the winding needle assembly 110 to extend to the right with the slide 120, so that the winding needle assembly 110 makes a linear motion. The first guide rod 151 and the second guide rod 153 arranged on both sides of the screw rod 1431 are linear guide rods respectively. The first guide rod 151 and the second guide rod 153 can bear the gravity from the slide 120 during the linear motion process, reduce the load on the screw rod 1431 during the movement, and improve the service life of the screw rod 1431.

[0054] The battery cell winding mechanism further includes a third support seat 180, which is spaced apart from and arranged opposite to the second support seat 170. The third support seat 180 is provided with a mounting hole 181, which is used to mount the second driving mechanism 141. The sliding sleeve 135 is rotatably connected to the third support seat 180 and the second support seat 170, and the driving gear 1331 and the driven gear 1333 are respectively arranged in the space formed between the second support seat 170 and the third support seat 180.

[0055] Furthermore, if Figure 3 and Figure 4 As shown, the needle winding assembly 110 includes: a needle winding mechanism 111 and a connecting member 113 . The needle winding mechanism 111 includes a plurality of needle winding bodies. The connecting member 113 is connected to the needle winding mechanism 111 and the rotating portion 137 , and the connecting member 113 is rotationally connected to the slide seat 120 .

[0056] The needle winding body mentioned above can be set to two. The connecting member 113 includes a transverse plate and a cylindrical structure, so that the longitudinal section of the connecting member 113 can be T-shaped, the transverse plate of the connecting member 113 can be detachably connected to the needle winding mechanism 111, and the cylindrical structure of the connecting member 113 is used to connect the rotating part 137, wherein the end of the rotating part 137 extends into the cylindrical structure and is connected to the rotating part 137, so that the rotating part 137 and the connecting member 113 can rotate synchronously. A bearing is provided on the outer circumference of the cylindrical structure of the connecting member 113, so that the connecting member 113 is rotatably connected to the slider through two bearings arranged at intervals from each other. It can be understood that the slider has a through hole for installing the bearing, and the slider can be sleeved on the outside of the connecting member 113, and the two bearings are arranged on the inner wall of the through hole of the slider.

[0057] like Fig.10 As shown, when the winding needle assembly 110 is performing linear motion or the winding head is performing rotational motion, by arranging the linear guide rods symmetrically on opposite sides of the screw rod, the first guide rod 151 and / or the second guide rod 153 can bear part of their own weight load, thereby reducing the load on the screw rod 1431 during the linear motion.

[0058] Exemplary battery cell winding device

[0059] The battery cell winding device comprises: a base, a rotating support base and a battery cell winding mechanism. The rotating support base is rotatably connected to the base, the battery cell winding mechanism is connected to the rotating support base, and the battery cell winding mechanism is arranged in plurality.

[0060] The first support seat 160 and the second support seat 170 are both provided with a base and a rotating support seat, so that the battery cell winding mechanism can be mounted on the first support seat 160 and the second support seat 170 .

[0061] Exemplary Winding Machine

[0062] The winding machine comprises a winding device, an unwinding device and a feeding device as described above, wherein the unwinding device is configured to feed the battery cell coil to the winding device for winding to form a battery cell, and the feeding device is configured to remove the formed battery cell from the winding device for feeding.

[0063] According to the above description, this application has the following advantages:

[0064] 1. By arranging the linear guide rods symmetrically on opposite sides of the screw rod, the load on the screw rod during linear motion is reduced.

[0065] 2. Simple structure and low cost.

[0066] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be configured and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0069] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A battery cell winding mechanism, characterized in that: include: A winding needle assembly (110); A sliding seat (120) rotatably connected to the needle winding assembly (110); A first power mechanism (130) comprises a rotating part (137), wherein the rotating part (137) is connected to the needle winding assembly (110), and the rotating part (137) is rotationally connected to the slide seat (120), so that the first power mechanism (130) can drive the needle winding assembly (110) to rotate; A second power mechanism (140) comprises a linear motion part (143), wherein the linear motion part (143) is connected to the slide seat (120) to drive the needle winding assembly (110) to move linearly; A guide mechanism (150) is slidably connected to the slide seat (120) at two opposite sides of the linear motion portion (143) to guide the sliding direction of the slide seat (120); the guide mechanism (150) comprises: A first guide rod (151); A second guide rod (153) disposed opposite to the first guide rod (151); The first guide rod (151) and the second guide rod (153) are respectively located on opposite sides of the linear motion portion (143), and the first guide rod (151) and the second guide rod (153) are both connected to a first support seat (160) and a second support seat (170), and the second support seat (170) and the first support seat (160) are spaced apart from each other and arranged opposite to each other; The center line of the first guide rod (151), the center line of the linear motion part (143) and the center line of the second guide rod (153) are located in a first plane; the center line of the rotating part (137) and the center line of the linear motion part (143) are located in a second plane, and the second plane is perpendicular to the first plane.

2. The battery core winding mechanism according to claim 1, characterized in that: The first power mechanism (130) further includes: A first driving mechanism (131) having a first rotation output portion; A transmission mechanism (133), connected to the first rotation output part; A sliding sleeve (135) connected to the transmission mechanism (133); One end of the rotating part (137) is in transmission connection with the transmission mechanism (133), the other end of the rotating part (137) is connected with the winding needle assembly (110), and the sliding sleeve (135) is axially slidably matched with the rotating part (137).

3. The battery core winding mechanism according to claim 2, characterized in that: The transmission mechanism (133) comprises: A driving gear (1331), connected to the first rotation output part; A driven gear (1333) meshing with the driving gear (1331), and the driven gear (1333) is rotatable; Wherein, the sliding sleeve (135) passes through the driven gear (1333) and is connected to the driven gear (1333).

4. The battery core winding mechanism according to claim 1, characterized in that: The second power mechanism (140) further includes: A second driving mechanism (141) having a second rotation output portion; The linear motion part (143) comprises a screw rod (1431) and a nut (1433), one end of the screw rod (1431) is connected to the second rotation output part, the nut (1433) is threadedly connected to the screw rod (1431), and the nut (1433) is connected to the slide seat (120).

5. The battery core winding mechanism according to claim 1, characterized in that: The needle winding assembly (110) comprises: The needle winding mechanism (111) comprises a plurality of needle winding bodies; The connecting member (113) is connected to the needle winding mechanism (111) and the rotating part (137), and the connecting member (113) is rotationally connected to the sliding seat (120).

6. A battery cell winding device, characterized in that: include: Pedestal; A rotating support seat, rotatably connected to the base; The battery cell winding mechanism (100) according to any one of claims 1 to 5 is connected to the rotating support seat, and the battery cell winding mechanism (100) is provided in plurality.

7. A winding machine, characterized in that: include: The winding device (10) as claimed in claim 6; An unwinding device is configured to feed the battery cell coil to the winding device (10) for winding to form a battery cell; A material unloading device is configured to remove the formed battery core from the winding device (10) for unloading.

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