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 body, two winding needle modules and a driving module, a mounting hole is formed in the rack, the rotating body comprises a rotating shaft and a rotating disc, the rotating disc is provided with a rotating wheel abutting against the inner wall of the mounting hole, and the rotating wheel abuts against the rotating shaft. One end of the rotating shaft penetrates through the rotating disc and is rotatably connected to the rack, each winding needle module is mounted on the rotating main body and comprises a winding needle driving assembly and a winding needle assembly, the winding needle assembly penetrates through the rotating disc, and the winding needle driving assembly is used for driving the winding needle assembly to rotate and axially move; the driving module is installed on the rack and connected with the other end of the rotating shaft to drive the rotating body to rotate. The battery cell winding device is relatively simple in structure, relatively good in compatibility, relatively high in rotating precision and relatively low in precision requirement on the bearing, and the manufacturing cost of the battery cell winding device can be reduced.

Description

Technical Field

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

[0002] The existing battery cell winding device usually includes two winding needle assemblies. In the actual working process, one of the two winding needle assemblies is located at the winding station and the other is located at the unloading station, and the positions of the two winding needle assemblies need to be rotated and replaced to realize the winding and unloading of the battery cell. In addition, during the winding and unloading process, the winding needle assemblies also need to rotate independently. In the prior art, the two winding needle assemblies are usually driven by a motor to realize the self-rotation of the gear structure, and the two winding needle assemblies are installed on a rotating shaft to realize the revolution of the two winding needle assemblies. On the one hand, this structure is more complicated, and due to the gear drive, the size of the battery cell rolls compatible with the two winding needle assemblies is limited. On the other hand, in order to ensure the stability of the revolution, the diameter of the rotating shaft needs to be larger, so that the size of the bearing matched on the rotating shaft is also larger, which results in all rotating mechanisms being located inside the inner ring of the large bearing. The rotation accuracy requires the accuracy of the large bearing itself to be guaranteed. The accuracy requirements for the large bearing are high, and special cases also need to be customized, which increases the equipment cost. Summary of the invention

[0003] The object of the present invention is to provide a battery cell winding device, which has a relatively simple structure, good compatibility, and high rotation accuracy, and has relatively low requirements on the accuracy of bearings, which is conducive to reducing the manufacturing cost 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, on which a mounting hole is provided; a rotating body, which comprises a rotating shaft and a rotating disk, and the rotating disk has a rotating wheel that stops at the inner wall of the mounting hole, and one end of the rotating shaft passes through the rotating disk and is rotatably connected to the frame; two winding needle modules, each of which is installed on the rotating body, and each of the winding needle modules comprises a winding needle drive assembly and a winding needle assembly, the winding needle assembly is arranged through the rotating disk, and the winding needle drive assembly is used to drive the winding needle assembly to rotate and the winding needle assembly to move axially; a driving module, which is installed on the frame and connected to the other end of the rotating shaft to drive the rotating body to rotate.

[0006] In some embodiments, the frame includes: a support panel, the support panel is provided with the mounting hole; a first support seat, the first support seat is spaced apart from the support panel, the first support seat is provided with a first rotating hole that cooperates with the rotating shaft, and a first bearing is installed in the first rotating hole; a support connecting seat, one end of the support connecting seat is connected to the support panel, and the other end is connected to the first support seat; a second support seat, the second support seat is spaced apart from the support connecting seat, the second support seat and the support connecting seat are respectively located on both sides of the support panel, the second support seat is provided with a second rotating hole that cooperates with the rotating shaft, and a second bearing is installed in the second rotating hole; and the second support seat is used to install the drive module.

[0007] In some embodiments, the winding needle drive assembly includes: a linear drive unit, which includes a first drive member and a linear transmission structure, the first drive member is installed on the rotating body, and the power input end of the linear transmission structure is connected to the output shaft of the first drive member; a rotational drive unit, which is installed on the power output end of the linear transmission structure and is connected to the winding needle assembly.

[0008] In some specific embodiments, the linear drive unit also includes a first fixed seat and a second fixed seat arranged at an interval; the power input end is a screw, and the two ends of the screw are rotatably connected to the first fixed seat and the second fixed seat respectively, and the power output end includes a slide seat, which is threadedly connected to the screw, and the slide seat is connected to the rotation drive unit.

[0009] In some specific embodiments, the rotary drive unit includes: a second driving member, which is connected to the winding needle assembly; a winding needle mounting seat, which is connected to the power output end, and the winding needle mounting seat has an installation cavity, and both ends of the installation cavity are open; wherein the winding needle assembly is rotatably arranged in the installation cavity, and a third bearing is provided between the winding needle assembly and the inner side wall of the installation cavity.

[0010] In some embodiments, the drive module includes: a third drive member, which is mounted on the frame; a belt transmission assembly, a driving wheel of the belt transmission assembly is connected to the output shaft of the third drive member, and a driven wheel of the belt transmission assembly is connected to the other end of the rotating shaft, and the driving wheel and the driven wheel are both matched with the transmission belt; a slip ring mounting seat, which is mounted on the frame, and the slip ring mounting seat has a through hole; a slip ring body, which is rotatably connected to the slip ring mounting seat and connected to the rotating shaft, and the slip ring body is provided with a wire outlet hole.

[0011] In some embodiments, the rotating body also includes a limit rod, one end of which is connected to the rotating shaft, and the other end is provided with a positioning piece; the battery cell winding device also includes a positioning module, which is installed on the frame, and 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.

[0012] In some specific embodiments, the positioning module includes: a positioning mounting seat, which is connected to the frame; a positioning drive member, which is installed on the positioning mounting seat; a positioning plate, which is connected to the positioning drive member, and the positioning plate has a positioning groove that cooperates with the positioning member.

[0013] In some embodiments, the battery cell winding device also includes a locking nozzle module, which is installed on the rotating shaft. 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.

[0014] In some specific embodiments, the lock nozzle module includes: a lock nozzle driving member, which is installed on the rotating shaft; a lock nozzle connecting seat, which is in transmission cooperation with the lock nozzle driving member and can move axially along the winding needle assembly under the drive of the lock nozzle driving member; a lock nozzle body, which is rotatably connected to the lock nozzle connecting seat, and the lock nozzle body can stop at the end of the winding needle assembly.

[0015] The beneficial effects of the battery cell winding device of the present invention are as follows: since each winding needle module includes a winding needle drive assembly and a winding needle assembly, the two winding needle modules are independently arranged, and the self-rotation movement of the two winding needle assemblies does not need to use gears, synchronous belts and other structures to realize rotation as in the prior art, and the structure is relatively simple, the cost is low, and the movement accuracy and work efficiency are both high. At the same time, since the rotating body includes a rotating shaft and a rotating disk, a rotating wheel is arranged on the rotating disk to fit in the mounting hole, one end of the rotating shaft is connected to the frame, and the other end is connected to the driving module. In addition to the rotating supports at both ends of the rotating shaft, the entire rotating body is also provided with a rotating wheel between the rotating disk and the frame for support. The rotation accuracy is jointly guaranteed by the rotating wheel and the rotating supports at both ends of the rotating shaft, and there is no need to ensure the accuracy of the large-diameter bearing itself as in the prior art, thereby reducing the accuracy requirements for the bearings at the rotating supports at both ends of the rotating shaft, which is conducive to reducing the manufacturing cost of the battery cell winding device. In addition, since the two winding needle modules are independently arranged, the size range of the battery cell rolls compatible with the two winding needle assemblies is relatively large, which is conducive to expanding the compatibility characteristics of the battery cell winding device with different models of battery cell rolls.

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

[0019] Figure 3 It is a partial schematic diagram of the matching structure of the rotating body, the driving module and the frame according to an embodiment of the present invention;

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure in another direction of the structure shown;

[0021] Figure 5 is a structural schematic diagram of a needle winding module according to an embodiment of the present invention;

[0022] Figure 6 is a schematic structural diagram of the winding needle module of an embodiment of the present invention in another direction;

[0023] Figure 7 yes Figure 6 AA section view;

[0024] Figure 8 is a structural schematic diagram of a lock nozzle module according to an embodiment of the present invention;

[0025] Fig. 9 It is a structural schematic diagram of a positioning module according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100, frame; 110, support panel; 111, mounting hole; 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;

[0028] 200, rotating body; 210, rotating disk; 211, rotating wheel; 220, rotating shaft; 230, limiting rod; 231, positioning member;

[0029] 300, winding needle module; 310, winding needle drive assembly; 311, 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 slide block;

[0030] 312, rotary drive unit; 3121, second drive member; 3122, winding needle mounting seat; 3123, third bearing; 3124, bearing fixing nut; 3125, first reducer; 3126, first reduction mounting plate; 320, winding needle assembly; 321, winding needle rotating shaft; 322, winding needle body;

[0031] 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;

[0032] 500, positioning module; 510, positioning mounting seat; 520, positioning drive member; 530, positioning plate; 531, positioning groove; 540, floating joint; 550, second slide rail; 560, second slider; 570, drive mounting plate; 580, slide rail fixing plate; 590, positioning adapter plate;

[0033] 600, lock mouth module; 610, lock mouth driving member; 620, lock mouth connecting seat; 630, lock mouth body; 640, screw rod fixing seat; 650, screw rod body; 660, screw rod nut; 670, bearing outer fixing ring; 680, bearing inner fixing ring; 690, fourth bearing. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is 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 the convenience of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings. 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 whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] 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.

[0036] 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.

[0037] The present invention discloses a battery core winding device, referring to Figure 1-Figure 2As shown, the battery cell winding device includes a frame 100, a rotating body 200, two winding needle modules 300 and a driving module 400. The frame 100 is provided with a mounting hole 111. The rotating body 200 includes a rotating shaft 220 and a rotating disk 210. The rotating disk 210 has a rotating wheel 211 that stops at the inner wall of the mounting hole 111. One end of the rotating shaft 220 passes through the rotating disk 210 and is rotatably connected to 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 assembly 320 is arranged through the rotating disk 210. The winding needle driving assembly 310 is used to drive the winding needle assembly 320 to rotate and the winding needle assembly 320 to move axially. The driving module 400 is installed on the frame 100 and is connected to the other end of the rotating shaft 220 to drive the rotating body 200 to rotate. It can be understood that since each winding needle module 300 includes a winding needle drive assembly 310 and a winding needle assembly 320, the two winding needle modules 300 are independently arranged, and the self-rotation movement of the two winding needle assemblies 320 does not need to adopt gears, synchronous belts and other structures to achieve rotation as in the prior art. The structure is relatively simple, the cost is low, and the movement accuracy and work efficiency are high. At the same time, since the rotating body 200 includes a rotating shaft 220 and a rotating disk 210, a rotating wheel 211 is provided on the rotating disk 210 to fit in the mounting hole 111, one end of the rotating shaft 220 is connected to the frame 100, and the other end is connected to the driving module 400. In addition to the rotating supports at both ends of the rotating shaft 220, the entire rotating body 200 is also provided with a rotating wheel 211 between the rotating disk 210 and the frame 100 for support. The rotation accuracy is jointly guaranteed by the rotating wheel 211 and the rotating supports at both ends of the rotating shaft 220, and there is no need to ensure the accuracy of the large-diameter bearing itself as in the prior art, thereby reducing the accuracy requirements for the bearings at the rotating supports at both ends of the rotating shaft 220, which is conducive to reducing the manufacturing cost of the battery cell winding device. In addition, since the two winding needle modules 300 are independently arranged, the size range of the battery cell rolls compatible with the two winding needle assemblies 320 is relatively large, which is conducive to expanding the compatibility characteristics of the battery cell winding device of this embodiment with different models of battery cell rolls.

[0038] Optionally, there are two rotating wheels 211, and they are symmetrically arranged along the rotation axis of the rotating disk 210. The two rotating wheels 211 can rotate and revolve on the inner wall of the mounting hole 111, which is conducive to further ensuring the rotation accuracy of the rotating body 200. Of course, in other embodiments of the present invention, the number of rotating wheels 211 can be selected according to actual needs and is not limited to the two in this embodiment.

[0039] refer to Figure 2-Figure 3As shown, 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 a mounting hole 111, the first support seat 120 is spaced apart from the support panel 110, the first support seat 120 is provided with a first rotation hole matched with the rotation shaft 220, a first bearing 140 is installed in the first rotation hole, one end of the support connection 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 connection seat 130, the second support seat 160 and the support connection seat 130 are respectively located on both sides of the support panel 110, the second support seat 160 is provided with a second rotation hole matched with the rotation shaft 220, a second bearing 170 is installed in the second rotation hole; and the second support seat 160 is used to install the drive module 400. It is understandable that the support panel 110 is provided with a mounting hole 111 for cooperating with the rotating disk 210. When the driving module 400 drives the entire rotating body 200 to rotate, the rotating wheel 211 on the rotating disk 210 can rotate and revolve on the inner wall of the mounting hole 111, 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 provided 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. Moreover, since the rotating wheel 211 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 the cost.

[0040] 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.

[0041] refer to Figure 1 and Figure 2As shown, the cell winding device further includes a locking nozzle module 600, which is mounted on the rotating shaft 220. The locking nozzle module 600 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 600 is in the pressing state, the cell roll on the winding needle assembly 320 is fixed relative to the winding needle assembly 320. It can be understood that during the winding process, if the cell roll moves along its axial direction relative to the winding needle assembly 320, the winding yield will be affected. In this embodiment, the additional locking nozzle module 600 can fix the cell roll on the winding needle assembly 320 during the actual working process to avoid the axial movement of the cell roll, thereby ensuring the winding stability.

[0042] refer to Figure 2 As shown, the rotating body 200 also includes a limit rod 230, one end of which is connected to the rotating shaft 220, and the other end is provided with a positioning member 231. The battery cell winding device also includes a positioning module 500, which is installed on the frame 100. The positioning module 500 has a positioning position for positioning the positioning member 231 and a releasing position for releasing the positioning member 231. When the positioning module 500 positions the positioning member 231, the rotating body 200 is fixed relative to the frame 100. It is understandable that during the winding process and the unloading process, the rotating body 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 work failure. In this embodiment, the additional positioning module 500 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, thereby reducing the probability of work failures and improving the working reliability of the battery cell winding device.

[0043] 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.

[0044] refer to Figure 3-Figure 4As 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.

[0045] 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.

[0046] 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.

[0047] refer to Figure 5As shown, the winding needle drive assembly 310 includes a linear drive unit 311 and a rotary drive unit 312. The linear drive unit 311 includes a first drive member 3111 and a linear transmission structure. The first drive member 3111 is installed on the rotating body 200. The power input end of the linear transmission structure is connected to the output shaft of the first drive member 3111. The rotary drive unit 312 is installed on the power output end of the linear transmission structure and is connected to the winding needle assembly 320. It can be understood that in the actual working process, the winding needle assembly 320 needs to advance or withdraw the needle according to actual needs. In this embodiment, the winding needle assembly 320 is driven to rotate by the rotary drive unit 312, and the winding needle assembly 320 is advanced or withdrawn by the linear drive unit 311, which can meet the needs of the winding and unloading process, thereby ensuring that the battery cell winding device can work stably.

[0048] refer to Figure 5 As shown, the linear drive unit 311 also includes a first fixed seat 3112 and a second fixed seat 3113 arranged at an interval, the power input end is a screw 3114, the two ends of the screw 3114 are respectively rotatably connected to the first fixed seat 3112 and the second fixed seat 3113, and one end of the screw 3114 passes through the first fixed seat 3112 and is connected to the first driving member 3111 through a coupling 3116, and the power output end includes a slide 3115, the slide 3115 is threadedly connected to the screw 3114, and the slide 3115 is connected to the rotation drive unit 312. 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, which can ensure that the lead screw 3114 rotates stably under the drive of the first driving member 3111, and the lead screw 3114 is equipped with a slide 3115. During the rotation of the lead screw 3114, the slide 3115 can drive the rotation 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 linear drive unit 311 can also be directly a cylinder, an electric push rod or other structures driven by a motor to drive the gear rack, and is not limited to the drive structure described above.

[0049] 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 rotating driving unit 312. It can be understood that when the 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.

[0050] refer to Figure 5-Figure 7 As shown, the 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 rotating drive unit 312.

[0051] 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.

[0052] 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.

[0053] refer to Figure 8 As shown, the lock nozzle module 600 includes a lock nozzle driving member 610, a lock nozzle connecting seat 620 and a lock nozzle body 630. The lock nozzle driving member 610 is installed on the rotating shaft 220. The lock nozzle connecting seat 620 is in transmission cooperation with the lock nozzle driving member 610 and can move axially along the winding needle assembly 320 under the drive of the lock nozzle driving member 610. The lock nozzle body 630 is rotatably connected to the lock nozzle connecting seat 620, and the lock nozzle body 630 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 610 drives the lock nozzle connecting seat 620 to move, so that the lock nozzle body 630 stops at the end of the winding needle body 322 away from the winding needle shaft 321. Since the lock nozzle body 630 is rotatably connected to the lock nozzle connecting seat 620, when the second driving member 3121 drives the winding needle shaft 321 to rotate, the lock nozzle body 630 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 600.

[0054] Optionally, the lock nozzle module 600 further includes a screw fixing seat 640, the screw fixing seat 640 is connected to the housing of the lock nozzle driver 610, and both ends of the screw body 650 are rotatably mounted on the screw fixing seat 640, and one end passes through the screw fixing seat 640 and is connected to the output shaft of the lock nozzle driver 610. The screw nut 660 is threadedly connected to the screw body 650 and is connected to the screw support connection seat 130. It is understandable that, in the actual working process, the lock nozzle driving member 610 drives the screw body 650 to rotate, and the two ends of the screw body 650 are rotatably connected to the screw fixing seat 640, respectively, which can ensure that the screw body 650 rotates stably under the drive of the lock nozzle driving member 610. The screw body 650 is equipped with a screw nut 660. During the rotation of the screw body 650, the screw nut 660 can drive the lock nozzle connecting seat 620 along the axial movement of the screw body 650, thereby realizing the compression or release of the winding needle assembly 320. The screw nut pair composed of the screw nut 660 and the screw body 650 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 610 can also be directly a cylinder, an electric push rod or other structures driven by a motor to drive the gear rack, and is not limited to the driving structure described above.

[0055] Optionally, a fourth bearing 690 is provided between the lock mouth body 630 and the lock mouth connecting seat 620, and the fourth bearing 690 is fixed by a bearing outer fixing ring 670 and a bearing inner fixing ring 680. It is understandable that the additional fourth bearing 690 can reduce the friction between the lock mouth body 630 and the lock mouth connecting seat 620, and prevent contaminants from entering the matching clearance between the lock mouth body 630 and the lock mouth connecting seat 620, thereby further avoiding the friction between the lock mouth body 630 and the lock mouth connecting seat 620, and extending the service life of the lock mouth module 600.

[0056] refer to Fig. 9 As shown, the positioning module 500 includes a positioning mounting seat 510, a positioning driving member 520 and a positioning plate 530. The positioning mounting seat 510 is connected to the frame 100, the positioning driving member 520 is installed on the positioning mounting seat 510, and the positioning plate 530 is connected to the positioning driving member 520, and the positioning plate 530 has a positioning groove 531 that cooperates with the positioning member 231. It can be understood that in the actual working process, the positioning driving member 520 drives the positioning plate 530 to move, and when the positioning groove 531 cooperates with the positioning member 231, the rotating body 200 can be positioned. The positioning driving member 520 drives the positioning plate 530 to move so that the rotating body 200 can be released when the positioning groove 531 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.

[0057] Optionally, the positioning drive member 520 is a cylinder, and cooperates with the positioning plate 530 through a floating joint 540. Thus, the movement of the positioning plate 530 is facilitated, and the structure of the positioning module 500 is simplified, which is conducive to reducing the manufacturing cost of the positioning module 500.

[0058] Optionally, the positioning module 500 also includes a slide rail fixing plate 580, which is connected to the positioning mounting seat 510 through a positioning adapter plate 590, and a second slide rail 550 is provided on the slide rail fixing plate 580, and a second slider 560 is provided on the second slide rail 550, and the second slider 560 cooperates with the positioning plate 530. It can be understood that when the positioning drive member 520 drives the positioning plate 530 to move, the second slider 560 can slide on the second slide rail 550, thereby guiding and limiting the movement direction of the positioning plate 530, and avoiding the positioning plate 530 from being stuck due to skewness. Further optionally, the positioning drive member 520 is fixed on the slide rail fixing plate 580 through a driving mounting plate 570, thereby facilitating the installation of the positioning drive member 520 and helping to improve the connection stability of the positioning drive member 520.

[0059] The advantages of the battery cell winding device of this embodiment are as follows:

[0060] First: It reduces the overall size of the battery cell winding device, reduces weight, and reduces assembly difficulty and subsequent maintenance costs.

[0061] Second: Improve the compatibility of the battery cell winding device to meet the requirements of large, medium and small winding needle sizes.

[0062] Third: Reduce the number of parts in the battery cell winding device, reduce costs and improve assembly efficiency.

[0063] Fourth: Improve the compatibility of the battery cell winding device with different processes, such as conventional winding process, continuous winding process, high-speed winding process, etc.

[0064] 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.

[0065] 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: A frame (100), wherein the frame (100) is provided with a mounting hole (111); A rotating body (200), the rotating body (200) comprising a rotating shaft (220) and a rotating disk (210), the rotating disk (210) having a rotating wheel (211) abutting against an inner wall of the mounting hole (111), one end of the rotating shaft (220) passing through the rotating disk (210) and being rotatably connected to the frame (100); Two winding needle modules (300), each of which is mounted on the rotating body (200), and each of which comprises a winding needle drive assembly (310) and a winding needle assembly (320), wherein the winding needle assembly (320) passes through the rotating disk (210), and the winding needle drive assembly (310) is used to drive the winding needle assembly (320) to rotate and the winding needle assembly (320) to move axially; A driving module (400) is installed on the frame (100) and connected to the other end of the rotating shaft (220) to drive the rotating body (200) to rotate.

2. The battery core winding device according to claim 1, characterized in that: The frame (100) comprises: A supporting panel (110), wherein the supporting panel (110) is provided with the mounting hole (111); a first support seat (120), the first support seat (120) being spaced apart from the support panel (110), the first support seat (120) being provided with a first rotation hole matched with the rotation shaft (220), and a first bearing (140) being installed in the first rotation hole; A support connecting seat (130), 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); A second support seat (160), the second support seat (160) and the support connecting seat (130) are spaced apart, the second support seat (160) and the support connecting seat (130) are respectively located on two 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 a second bearing (170) is installed in the second rotating hole; and the second support seat (160) is used to install the driving module (400).

3. The battery core winding device according to claim 1, characterized in that: The winding needle driving assembly (310) comprises: A linear drive unit (311), the linear drive unit (311) comprising a first drive member (3111) and a linear transmission structure, the first drive member (3111) being mounted on the rotating body (200), and a power input end of the linear transmission structure being connected to an output shaft of the first drive member (3111); A rotation drive unit (312), the rotation drive unit (312) is installed at the power output end of the linear transmission structure and is connected to the winding needle assembly (320).

4. The battery core winding device according to claim 3, characterized in that: The linear drive unit (311) further comprises a first fixing seat (3112) and a second fixing seat (3113) which are arranged at intervals; The power input end is a lead screw (3114), 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. The power output end includes a slide seat (3115), and the slide seat (3115) is threadedly connected to the lead screw (3114), and the slide seat (3115) is connected to the rotation drive unit (312).

5. The battery core winding device according to claim 3, characterized in that: The rotation driving unit (312) comprises: A second driving member (3121), the second driving member (3121) is connected to the winding needle assembly (320); A winding needle mounting seat (3122), the winding needle mounting seat (3122) is connected to the power output end, and the winding needle mounting seat (3122) has a mounting cavity, and both ends of the mounting cavity are open; The needle winding assembly (320) is rotatably arranged in the installation cavity, and a third bearing (3123) is arranged between the needle winding assembly (320) and the inner side wall of the installation cavity.

6. The battery core winding device according to claim 1, characterized in that: The driving module (400) comprises: A third driving member (410), wherein the third driving member (410) is mounted on the frame (100); A belt transmission assembly (420), wherein a driving wheel (421) of the belt transmission assembly (420) is connected to the output shaft of the third driving member (410), a driven wheel (422) of the belt transmission assembly (420) is connected to the other end of the rotating shaft (220), and both the driving wheel (421) and the driven wheel (422) are matched with a transmission belt (423); A slip ring mounting seat (430), the slip ring mounting seat (430) being mounted on the frame (100), the slip ring mounting seat (430) having a through hole; A slip ring body (440), the slip ring body (440) is rotatably connected to the slip ring mounting seat (430) and connected to the rotating shaft (220), and a wire outlet hole is provided on the slip ring body (440).

7. The battery core winding device according to any one of claims 1 to 6, characterized in that: The rotating body (200) further comprises a limiting rod (230), one end of which is connected to the rotating shaft (220), and the other end of which is provided with a positioning member (231); the battery cell winding device further comprises a positioning module (500), the positioning module (500) being installed on the frame (100), the positioning module (500) having a positioning position for positioning the positioning member (231) and a releasing position for releasing the positioning member (231), and when the positioning module (500) positions the positioning member (231), the rotating body (200) is fixed relative to the frame (100).

8. The battery cell winding device according to claim 7, characterized in that: The positioning module (500) comprises: A positioning mounting seat (510), wherein the positioning mounting seat (510) is connected to the frame (100); A positioning drive member (520), wherein the positioning drive member (520) is mounted on the positioning mounting seat (510); A positioning plate (530), the positioning plate (530) is connected to the positioning drive member (520), and the positioning plate (530) has a positioning groove (531) that cooperates with the positioning member (231).

9. The battery core winding device according to any one of claims 1 to 6, characterized in that: The battery cell winding device also includes a locking nozzle module (600), which is installed on the rotating shaft (220). The locking nozzle module (600) 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 (600) is in the pressing state, the battery cell on the winding needle assembly (320) is fixed relative to the winding needle assembly (320).

10. The battery core winding device according to claim 9, characterized in that: The lock nozzle module (600) comprises: A lock nozzle driving member (610), wherein the lock nozzle driving member (610) is mounted on the rotating shaft (220); A lock mouth connecting seat (620), the lock mouth connecting seat (620) is in driving cooperation with the lock mouth driving member (610), and can move along the axial direction of the winding needle assembly (320) under the drive of the lock mouth driving member (610); The locking mouth body (630) is rotatably connected to the locking mouth connecting seat (620), and the locking mouth body (630) can stop at the end of the winding needle assembly (320).

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