Winding device and battery cell processing equipment

Abstract

The present application relates to a kind of winding device and battery cell processing equipment, winding device includes rotating mechanism, roll needle subassembly and locking mechanism.Locking mechanism is provided in each station, and each roll needle subassembly is correspondingly provided with positioning portion.When roll needle subassembly flows to any station, the locking member of the station can be locked with the positioning portion on roll needle subassembly, so that reliable positioning is realized to the roll needle subassembly in each station, to make roll needle subassembly stay in corresponding station.Compared with the mode of only relying on the self-locking of rotating mechanism, when locking member and positioning portion are locked, the constraint to roll needle subassembly can be strengthened, so that effectively avoid roll needle subassembly to sway during station stay.Therefore, the above-mentioned winding device and battery cell processing equipment can effectively improve the stability of roll needle subassembly, to ensure that each process is accurately executed, so as to improve the winding quality of battery cell.

Description

Technical Field

[0001] This invention relates to the field of lithium battery equipment technology, and in particular to a winding device and a cell processing equipment. Background Technology

[0002] The winding device can wind and combine the positive electrode sheet, negative electrode sheet, and separator, and then form a wound battery cell after applying adhesive at the end. The winding device is typically equipped with a winding station, an adhesive application station, and a unloading station. Three sets of needle winding assemblies can rotate synchronously under the drive of a rotating mechanism, and sequentially switch between the three stations to complete the winding, adhesive application, and unloading operations of the battery cell in steps. When the needle winding assembly rotates to the corresponding station, it needs to stop and perform the corresponding operation. Its positioning usually relies on the self-locking function of the rotating mechanism. However, the reliability of the self-locking function of the rotating mechanism is insufficient, causing the needle winding assembly to easily shake during its stay at the station, thus affecting the smooth progress of each process and even seriously reducing the winding quality of the battery cell. Summary of the Invention

[0003] Therefore, it is necessary to provide a winding device and a cell processing equipment that can improve the stability of the winding needle assembly to address the above problems.

[0004] A winding device includes a rotating mechanism, a winding needle assembly, and a locking mechanism; the winding needle assembly is mounted on the rotating mechanism and can revolve around a first rotating axis under the drive of the rotating mechanism to circulate between multiple workstations; each winding needle assembly is provided with a positioning part, each workstation is provided with the locking mechanism, and each locking mechanism includes a locking element.

[0005] In one embodiment, the locking member is capable of locking with the positioning portion of the needle winding assembly that has entered the corresponding workstation.

[0006] In one embodiment, when the positioning part is locked in place with the locking member, the locking mechanism can limit the winding needle assembly circumferentially along the first rotation axis.

[0007] In one embodiment, within the winding station, each of the winding needle assemblies can be circumferentially adjusted along the first rotation axis under the drive of the rotation mechanism.

[0008] In one embodiment, the locking member is position-adjustable along a first direction to remain opposite to the positioning portion of the needle coil assembly entering the corresponding workstation.

[0009] In one embodiment, during the circumferential position adjustment of the needle coil assembly along the first rotation axis driven by the rotation mechanism, the locking member that is locked to it can move along the first direction.

[0010] In one embodiment, the locking mechanism includes a mounting bracket, a locking drive member, and a first slide rail extending along the first direction. The locking member is slidably mounted on the first slide rail, and the first slide rail is slidably mounted on the mounting bracket and connected to the locking drive member.

[0011] In one embodiment, the locking member is provided with a braking member that can cooperate with the braking of the first slide rail.

[0012] In one embodiment, each of the needle coiling assemblies is provided with a plurality of positioning portions, and the plurality of positioning portions are spaced apart, and the locking member can lock into any of the positioning portions.

[0013] In one embodiment, the positioning part is configured as a groove, and the locking member can engage with the groove.

[0014] In one embodiment, the rotating mechanism includes a first rotating mechanism, which includes a first driving component, a rotating rod, and an annular track. The first driving component is pulsatorically connected to the rotating rod. The annular track is arranged around the circumference of the rotating rod, and both the annular track and the rotating rod are coaxial with the first rotation axis. Each of the needle coiling components can be slidably mounted on the annular track and can slide along the annular track under the drive of the rotating rod.

[0015] In one embodiment, a plurality of the annular tracks are spaced apart along the axial direction of the rotating rod, and each of the needle coiling assemblies is slidably connected to the plurality of the annular tracks via a plurality of connecting blocks.

[0016] In one embodiment, the positioning part is disposed on any of the connecting blocks.

[0017] In one embodiment, each of the needle winding assemblies further includes a slider, and a guide rod is provided for each of the needle winding assemblies. The guide rod extends along the axial direction of the rotating rod and is fixedly connected to the plurality of connecting blocks. The slider is slidably sleeved on the guide rod.

[0018] In one embodiment, the rotating rod is capable of engaging or disengaging with each of the needle winding assemblies and can drive the engaged needle winding assembly to slide along the annular track; the rotating mechanism further includes a second rotating mechanism, the drive end of which can selectively engage with one of the needle winding assemblies.

[0019] In one embodiment, a first clutch mechanism is provided between each of the needle winding assemblies and the rotating rod, and each of the needle winding assemblies is connected to a first retaining member. The first clutch mechanism includes a first driving member assembled on the rotating rod and a first sliding plate that is pulsatorically connected to the first driving member. A first slot adapted to the first retaining member is provided on the first sliding plate.

[0020] In one embodiment, the first drive member can drive the first sliding plate to slide along the rotating rod and force the first retaining member to engage or disengage from the first slot, so that the rotating rod engages or disengages from the corresponding needle coiling assembly.

[0021] In one embodiment, the second rotating mechanism includes a second driving component and a swing plate, the swing plate being rotatably sleeved on the rotating rod and connected to the second driving component in a transmission manner, and the swing plate being able to selectively engage with the needle winding component.

[0022] In one embodiment, the swing plate is provided with a second clutch mechanism, and each of the needle coiling assemblies is connected to a second holding member. The second clutch mechanism includes a second driving member assembled on the swing plate and a second sliding plate that is pulsatorically connected to the second driving member. The second sliding plate is provided with a second slot that is adapted to the second holding member.

[0023] In one embodiment, the second drive member can drive the second sliding plate to slide along the swing plate and force the second holding member to engage or disengage from the second slot, so that the swing plate engages or disengages from the corresponding winding needle assembly.

[0024] In one embodiment, a support plate is also provided corresponding to each of the needle coiling assemblies, the needle coiling assemblies being slidably mounted on the corresponding support plate and being drivenly connected to the rotating mechanism through the support plate.

[0025] A battery cell processing apparatus includes a winding device as described in any of the preferred embodiments above.

[0026] The aforementioned winding device and cell processing equipment are equipped with a locking mechanism at each station, and each winding needle assembly has a corresponding positioning part. When the winding needle assembly moves to any station, the locking member at that station engages with the positioning part on the winding needle assembly, thereby reliably positioning the winding needle assembly at each station and ensuring that the winding needle assembly remains within the corresponding station. Compared to a method that relies solely on the self-locking of the rotation mechanism, the locking engagement between the locking member and the positioning part strengthens the constraint on the winding needle assembly, effectively preventing it from shaking during its stay at the station. Therefore, the aforementioned winding device and cell processing equipment can effectively improve the stability of the winding needle assembly, ensuring precise execution of each process and thus improving the winding quality of the battery cell. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a partial structural schematic diagram of the winding device in one embodiment of the present invention; Figure 2 for Figure 1 A partial structural diagram of the winding device shown, illustrating the transmission cooperation between the winding needle assembly and the first rotating mechanism. Figure 3 for Figure 1 A partial structural diagram of the winding device shown, illustrating the transmission cooperation between the winding needle assembly and the second rotating mechanism; Figure 4 for Figure 2 An enlarged schematic diagram of local area A in the shown local structure; Figure 5 for Figure 1 A schematic diagram of the assembly between a single winding needle assembly and the annular track in the winding device shown; Figure 6 This is a schematic diagram of the installation structure of the needle winding assembly and locking mechanism in one embodiment of the present invention; Figure 7 for Figure 6 End view of the mounting structure of the needle coil assembly and locking mechanism shown; Figure 8 for Figure 6 The enlarged schematic diagram shows a portion B of the mounting structure of the needle winding assembly and locking mechanism.

[0029] Explanation of reference numerals in the attached figures: Winding device-10; First rotating mechanism-100; First drive assembly-110; Rotating rod-120; Circular track-130; Connecting block-140; Guide rod-150; Second rotating mechanism-200; Needle winding assembly-300; Positioning part-301; Needle winding body-310; End support-320; Sliding part-340; First clutch mechanism-400; First holding part-410; First drive part-4 20; First sliding plate - 430; First slot - 431; Second clutch mechanism - 500; Second holding member - 510; Second driving member - 520; Second sliding plate - 530; Second slot - 531; Bearing plate - 600; Collar - 610; Locking mechanism - 700; Locking member - 710; Mounting bracket - 720; Locking driving member - 730; First slide rail 740; Second slide rail 750; Brake member - 760. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] Please see Figure 1 and Figure 2 The present invention provides a winding device 10 and a battery cell processing equipment. The battery cell processing equipment includes the winding device 10.

[0037] In addition to the winding device 10, the aforementioned battery cell processing equipment generally includes functional modules such as an adhesive application device (not shown) and a blanking device (not shown). The winding device 10 can use electrode strips and separator strips to continuously wind and form battery cells. At least three winding stations, adhesive application stations, and blanking stations are arranged sequentially around the winding device 10. Battery cells processed at the winding station first enter the adhesive application station, and after the adhesive application device completes the final adhesive application, they enter the blanking station. Finally, the blanking device unloads and stores or transfers them to subsequent processes.

[0038] Please refer to the following: Figure 6 and Figure 7In one embodiment of the present invention, the winding device 10 includes a rotating mechanism, a winding needle assembly 300, and a locking mechanism 700.

[0039] The needle winding assembly 300 is mounted on the rotating mechanism and can revolve around a first rotation axis under the drive of the rotating mechanism to circulate between multiple workstations. The needle winding assembly 300 generally includes a needle winding body 310, the outer surface of which is approximately arc-shaped. The winding device 10 generally also includes a needle winding drive mechanism 800, which can drive the needle winding body 310 to rotate around its own axis. During the winding operation, the needle winding assembly 300 first fixes the starting ends of the electrode strip and the separator strip, and then the needle winding drive mechanism 800 drives the needle winding body 310 to rotate around its own axis, so that the electrode strip and the separator strip are wound around the outer periphery of the needle winding body 310 and gradually form a battery cell.

[0040] The aforementioned multiple workstations include at least a winding workstation, an adhesive application workstation, and a blanking workstation. Driven by a rotating mechanism, the needle winding assembly 300 can sequentially switch between the winding workstation, the adhesive application workstation, and the blanking workstation to perform winding, adhesive application, and blanking operations respectively. Specifically, after a needle winding assembly 300 completes the winding of the battery cell at the winding workstation, the rotating mechanism can rotate it to the adhesive application workstation for final adhesive application, and then it enters the blanking workstation to remove the finished battery cell.

[0041] One end of the needle winding body 310 is connected to the needle winding drive mechanism 800, while the other end is rotatably mounted on a support structure, such as a bearing housing. When unloading the battery cell from the needle winding assembly 300 at the unloading station, the entire needle winding body 310 must first be driven to retract axially, so that the end of the needle winding body 310 away from the needle winding drive mechanism 800 is completely disengaged from the support structure that previously provided rotational support. This leaves one end of the needle winding body 310 suspended, thus allowing an axial path for the battery cell to be removed.

[0042] Specifically, in this embodiment, the winding device 10 further includes a support plate 600 corresponding to each needle winding assembly 300. The needle winding assembly 300 is slidably mounted on the corresponding support plate 600 and is connected to the rotating mechanism via the support plate 600. The support plate 600 is generally elongated and extends in a direction parallel to the first rotation axis. This elongated structure provides more mounting points. The rotating mechanism drives the corresponding needle winding assembly 300 to revolve around the first rotation axis via the support plate 600. Moreover, when performing the unloading operation on the needle winding assembly 300, it can be achieved by driving the needle winding assembly 300 to slide along the support plate 600.

[0043] More specifically, the needle coil assembly 300 also includes an end support 320, which may be cylindrical to provide a larger support area. The needle coil body 310 can be slidably mounted on the support plate 600 via the end support 320, thereby enabling axial movement. The end support 320 can be slidably connected to the support plate 600 via a guide rail and slider. One end of the needle coil body 310 is rotatably connected to the end support 320 and is connected to the needle coil drive mechanism 800; the other end, the free end, is rotatably connected to the support structure on the support plate 600. During the unloading operation of the needle coil assembly 300, by driving the entire needle coil assembly 300 to slide along the support plate 600, the free end of the needle coil body 310 can be disengaged from the support structure of the support plate 600.

[0044] To improve production efficiency, at least two needle winding assemblies 300 are generally provided. Specifically, in this embodiment, three needle winding assemblies 300 are provided, which are circumferentially distributed along the first rotation axis. Each needle winding assembly 300 can circulate between the winding station, the adhesive application station, and the unloading station under the drive of the aforementioned rotation mechanism. In this way, it can be ensured that the three needle winding assemblies 300 are respectively in the winding station, the adhesive application station, and the unloading station within the same time period, thereby realizing the parallel operation of the three processes of winding, adhesive application, and unloading, which is beneficial to improving production efficiency.

[0045] A locking mechanism 700 is provided at each workstation. Specifically, the winding workstation, the adhesive application workstation, and the unloading workstation are each equipped with a locking mechanism 700. Each locking mechanism 700 includes a locking element 710, and each needle winding assembly 300 is provided with a positioning part 301. When the needle winding assembly 300 enters any workstation, the locking element 710 of the locking mechanism 700 at that workstation can form a locking engagement with the positioning part 301 on the needle winding assembly 300.

[0046] When the positioning part 301 and the locking member 710 are in a locked engagement state, the locking mechanism 700 can apply a limiting effect to the needle winding assembly 300 in the circumferential direction along the first rotation axis. That is, through the mechanical constraint between the locking member 710 and the positioning part 301, the rotational freedom of the needle winding assembly 300 around the first rotation axis can be directly restricted, thereby maintaining its circumferential position stability within the workstation.

[0047] Specifically, in this embodiment, the positioning part 301 is configured as a groove, into which the locking member 710 can engage. When the needle winding assembly 300 enters the workstation and needs to be locked, the locking member 710 is inserted into the groove to form a locking engagement. Once the process at that workstation is completed, the locking member 710 is pulled out of the groove to release the locking engagement, and the needle winding assembly 300 can immediately resume its revolution and continue to the next workstation. The entire insertion and removal process can be completed solely through the action of the cam, making operation simple and responsive. Optionally, the locking member 710 can be configured as a cam.

[0048] In actual operation, whenever the needle winding assembly 300 arrives at any station and is ready to perform the corresponding process, the locking member 710 at that station can automatically or controllably engage with the positioning part 301 on the needle winding assembly 300. Compared to related technologies that rely solely on a rotating mechanism (such as a motor brake or reducer self-locking) to keep the needle winding assembly 300 stationary, locking the locking member 710 with the positioning part 301 adds an extra rigid constraint to the needle winding assembly 300, thereby significantly enhancing its resistance to disturbance and effectively preventing unexpected swaying or angular deviation due to inertia, vibration, or external impact during its stay at the station. Therefore, the locking mechanism 700 can reliably and stably position the needle winding assembly 300 at each station, ensuring that the needle winding assembly 300 accurately stays in the working position during process execution, thus guaranteeing the execution accuracy of processes such as winding, gluing, and unloading, and ultimately improving the winding quality and product consistency of the battery cells.

[0049] In actual production, when the model of the battery cell to be processed changes, the corresponding needle winding assembly 300 needs to be replaced, resulting in a change in the outer diameter of the needle winding assembly 300. For example, when the original needle winding assembly 300 had a smaller diameter, the initial feeding direction of the electrode strip when entering the winding station was approximately tangent to the outer circumference of the electrode roller. When the battery cell model is changed and a larger diameter needle winding assembly 300 is used, the positional relationship between the outer contour of the needle winding assembly 300 and the electrode roller changes, and the contact point between the electrode strip and the needle winding assembly 300 will shift circumferentially. Since the position of the electrode roller is fixed, when the diameter of the needle winding assembly 300 increases, the wrap angle of the electrode strip as it passes over the electrode roller will change accordingly. If this deflection is not compensated for, the electrode strip may experience problems such as misalignment, wrinkles, or poor alignment at the beginning of winding, thus affecting the winding quality.

[0050] To address this issue, in this embodiment, within the winding station, each needle winding assembly 300 can be circumferentially adjusted along the first rotation axis under the drive of the rotating mechanism. Specifically, at the winding station, when a needle winding assembly 300 of different diameter is replaced, the rotating mechanism can rotate the needle winding assembly 300 around the first rotation axis by a preset angle to adjust the phase relationship between its outer circumferential surface and the electrode roller. By adjusting the circumferential position, the initial contact phase between the material strip and the needle winding assembly 300 can be changed, thereby compensating for the deviation in the feeding direction caused by the change in the needle winding diameter, ensuring that the feeding direction of the electrode strip 20 remains constant, i.e., it is introduced into the needle winding assembly 300 at an angle approximately tangential to the electrode roller.

[0051] After the circumferential position of the needle winding assembly 300 at the winding station is adjusted, the rotation angle of the needle winding assemblies 300 at other stations must also be adjusted accordingly around the first rotation axis when entering the winding station. This ensures that all needle winding assemblies 300 maintain a consistent revolution phase, preventing phase misalignment between stations due to adjustments at a single station. This guarantees that the needle winding assembly 300 can precisely engage with the actuators of each station, such as the adhesive application mechanism and the unloading mechanism, when it moves to different stations.

[0052] Correspondingly, in this embodiment, the locking member 710 can be adjusted in position along the first direction to remain opposite to the positioning part 301 of the coiling needle assembly 300 entering the corresponding work station. Specifically, the first direction is generally perpendicular to the first rotation axis.

[0053] When the needle coil assembly 300 undergoes circumferential position adjustment around the first rotation axis due to model change, the position of its positioning part 301 in space also shifts accordingly. At this time, the locking member 710 can actively adapt to and match the position of the positioning part 301 after the circumferential adjustment of the needle coil assembly 300 by moving along the first direction, thereby ensuring that the locking member 710 can always be aligned with the positioning part 301 and that the locking member 710 can smoothly engage with the positioning part 301.

[0054] Furthermore, during the circumferential position adjustment of the needle winding assembly 300 along the first rotation axis driven by the rotation mechanism, it can drive the locking member 710, which is locked to it, to move along the first direction. After the needle winding assembly 300 enters the winding station, its positioning part 301 first engages with the locking member 710. During the rotation of the needle winding assembly 300 along the first rotation axis, the locking member 710 is unlocked first, and the needle winding assembly 300 can then drive the locking member 710 to move synchronously. After the locking member 710 moves into place, it is then locked, and the locking member 710 can then limit the movement of the needle winding assembly 300.

[0055] Specifically, in this embodiment, each needle winding assembly 300 is provided with multiple positioning parts 301, and the multiple positioning parts 301 are spaced apart. The locking member 710 can lock into any of the positioning parts 301 of the needle winding assembly 300. Therefore, the locking member 710 only needs a small stroke in the first direction to select a suitable positioning part 301 for locking according to the actual position of the needle winding assembly 300 after circumferential adjustment, without needing to move a large distance corresponding to the increase of the circumferential adjustment angle of the needle winding assembly 300.

[0056] Specifically, when the needle winding assembly 300 is adjusted circumferentially at a large angle around the first rotation axis, the distribution positions of the positioning parts 301 on it will shift accordingly. If only a single positioning part 301 is provided on the needle winding assembly 300, the locking member 710 needs to move a large stroke along the first direction to align with the positioning part 301. This not only places higher demands on the stroke of the locking member 710, but may also increase the response time due to excessive stroke. By arranging multiple positioning parts 301 at intervals, the locking member 710 can select the nearest positioning part 301 that matches the current circumferential position for locking within a smaller stroke range, which helps to make the structural design of the locking mechanism 700 more compact.

[0057] Please refer to the following: Figure 8 In this embodiment, the locking mechanism 700 includes a mounting bracket 720, a locking drive member 730, and a first slide rail 740. The first slide rail 740 extends along a first direction. The locking member 710 is slidably mounted on the first slide rail 740. The first slide rail 740 is slidably mounted on the mounting bracket 720 and connected to the locking drive member 730.

[0058] The mounting bracket 720 serves as a support base, fixedly installed at the corresponding workstation to support other components of the locking mechanism 700. The locking drive 730 can be a cylinder, with its piston rod connected to the first slide rail 740. When the locking drive 730 actuates, it drives the first slide rail 740 and the locking member 710 mounted thereon to reciprocate as a whole, thereby causing the locking member 710 to move towards or away from the positioning part 301, thus achieving locking engagement or disengagement between the locking member 710 and the positioning part 301. The locking member 710 itself can also slide relative to the first slide rail 740, thereby achieving position adjustment along the first direction to maintain reliable alignment with the positioning part 301, which has shifted position due to the circumferential adjustment of the needle winding assembly 300.

[0059] More specifically, the locking mechanism 700 also includes a second slide rail 750, through which the first slide rail 740 is slidably connected to the mounting bracket 720. The second slide rail 750 can extend along a second direction perpendicular to the first direction, so the locking drive member 730 can drive the first slide rail 740 and the locking member 710 as a whole to reciprocate along the second direction, so as to achieve locking engagement or disengagement with the positioning part 301.

[0060] Furthermore, in this embodiment, the locking member 710 is provided with a braking member 760 capable of engaging with the first slide rail 740. When the locking member 710 slides along the first slide rail 740 to a position aligned with the positioning part 301, the braking member 760 actuates, locking the relative position between the locking member 710 and the first slide rail 740, thus keeping the locking member 710 in the adjusted position without unexpected displacement. At this time, the position of the locking member 710 is stably maintained, and then the locking drive member 730 drives the first slide rail 740 to move as a whole, so that the locking member 710 accurately engages in the positioning part 301, thereby better locking the needle coiling assembly 300.

[0061] When it is necessary to change the battery cell model or to readjust the circumferential position of the needle winding assembly 300, the brake 760 can be released, allowing the locking member 710 to return to its sliding position along the first slide rail 740 for readjustment. After the adjustment is completed, the brake 760 actuates again to relock the position of the locking member 710.

[0062] Please refer to it again. Figure 1 and Figure 2 In this embodiment, the rotating mechanism includes a first rotating mechanism 100, which includes a first driving assembly 110, a rotating rod 120, and an annular track 130. The first driving assembly 110 is pulsatorically connected to the rotating rod 120, and the annular track 130 is arranged circumferentially around the rotating rod 120. Both the annular track 130 and the rotating rod 120 are coaxial with the first rotation axis. Each needle coiling assembly 300 is slidably mounted on the annular track 130 and can slide along the annular track 130 under the drive of the rotating rod 120.

[0063] Specifically, the first drive assembly 110 can employ a servo motor with a reducer, and connect to the rotating rod 120 via gear transmission, synchronous belt transmission, or coupling to precisely control the rotation speed, angle, and start / stop of the rotating rod 120. The needle winding assembly 300 can achieve sliding engagement with the annular track 130 through a slider or similar structure. The first rotating mechanism 100 generally also includes a bracket 160, which is positioned along the annular track 130 to provide support for it. Optionally, the locking mechanism 700 can also be fixedly connected to the bracket; specifically, the locking mechanism 700 is fixedly connected to the bracket 160 via a mounting bracket 720.

[0064] The driving end of the first rotating mechanism 100 is the rotating rod 120. When the first driving assembly 110 drives the rotating rod 120 to rotate around its own axis, that is, the first rotating axis, the needle winding assembly 300 will be driven to revolve around the first rotating axis along the annular track 130. The annular track 130 can provide continuous and rigid support for each needle winding assembly 300, so that it maintains a stable posture during the revolution and avoids displacement or vibration due to centrifugal force or gravity. It can be seen that the first rotating mechanism 100 can stably and reliably drive multiple needle winding assemblies 300 to revolve synchronously under the support of the annular track 130, effectively improving the positional accuracy and running stability of the needle winding assembly 300 during high-speed movement.

[0065] Furthermore, in this embodiment, multiple annular tracks 130 are spaced apart along the axial direction of the rotating rod 120, and each needle winding assembly 300 is slidably connected to multiple annular tracks 130 via multiple connecting blocks 140. Each connecting block 140 can be slidably connected to the corresponding annular track 130 via a slider structure. By setting multiple annular tracks 130, the needle winding assembly 300 obtains multi-point support during revolution, which can more effectively suppress tilting or swaying, further improving motion stability and positioning accuracy.

[0066] Specifically, in this embodiment, the positioning part 301 is disposed on any one of the connecting blocks 140. The connecting block 140 serves to slide and connect the needle winding assembly 300, while also providing a basis for the positioning part 301. As a connecting transition component between the needle winding assembly 300 and the rotating mechanism, the position of the connecting block 140 directly corresponds to the circumferential orientation of the needle winding assembly 300. By placing the positioning part 301 on the connecting block 140, it is not necessary to create an additional positioning structure on the needle winding assembly 300, and the space within the connecting block 140 itself can be effectively utilized to make the overall layout more compact and reasonable.

[0067] The locking mechanism 700 can indirectly lock the needle coil assembly 300 corresponding to the connecting block 140 by locking the connecting block 140. When the locking member 710 and the positioning part 301 on the edge of the connecting block 140 form a locking engagement, the circumferential rotation of the connecting block 140 is restricted, and the connected needle coil assembly 300 is also locked.

[0068] Furthermore, please refer to the following: Figure 5 In this embodiment, each needle winding assembly 300 further includes a slider 340, and a guide rod 150 is also provided for each needle winding assembly 300. The guide rod 150 extends along the axial direction of the rotating rod 120 and is fixedly connected to a plurality of connecting blocks 140. The slider 340 is slidably sleeved on the guide rod 150.

[0069] Specifically, the sliding member 340 is generally fixedly connected to the end support member 320 and does not rotate with the needle coiling body 310. When the first rotating mechanism 100 drives the needle coiling assembly 300 to revolve around the first rotation axis, the power is first transmitted to the end support member 320, and then drives the connecting block 140 to slide along the annular track 130 through the sliding member 340 and the guide rod 150. Through the cooperation of the sliding member 340 and the guide rod 150, a stable sliding cooperation between the needle coiling assembly 300 and the annular track 130 is achieved, while retaining the axial freedom of movement of the needle coiling assembly 300. When the needle coiling assembly 300 needs to retract or reset axially at the unloading station, the sliding member 340 can slide relative to the guide rod 150 axially, without causing motion interference due to the cooperation relationship with the annular track 130, thus ensuring smooth axial movement during the unloading operation.

[0070] Furthermore, the guide rod 150 connects multiple connecting blocks 140 simultaneously, effectively improving the consistency and stability of each connecting block 140 as it slides along the annular track 130. When moving on the annular track 130, the multiple connecting blocks 140 share the weight and centrifugal force of the needle winding assembly 300. The guide rod 150, as a rigid connector, ensures that each connecting block 140 remains synchronized in the circumferential direction, preventing skewing or jamming caused by uneven force on individual connecting blocks 140 or differences in guide rail clearance. This improves the smoothness and positioning accuracy of the revolution. Each needle winding assembly 300 may have only one guide rod 150, or at least two may be arranged in parallel.

[0071] Furthermore, in this embodiment, the rotating rod 120 can engage or disengage with each needle coil assembly 300, and can drive the engaged needle coil assembly 300 to slide along the annular track 130.

[0072] In other words, the first rotating mechanism 100 can simultaneously drive only a portion, not all, of the needle winding assemblies 300 to revolve around the first rotating axis. Specifically, only the needle winding assemblies 300 engaged with the drive end of the first rotating mechanism 100 can revolve with the first rotating mechanism 100, while the needle winding assemblies 300 separated from the drive end of the first rotating mechanism 100 cannot revolve with the first rotating mechanism 100.

[0073] In this way, the rotating mechanism can not only drive all the needle winding assemblies 300 to revolve around the first rotation axis, but also drive any one needle winding assembly 300 to move circumferentially relative to the other needle winding assemblies 300 along the first rotation axis. It is evident that, unlike existing technologies, the relative position of each needle winding assembly 300 along the first rotation axis can be adjusted by the rotating mechanism. Therefore, the relative positions between multiple needle winding assemblies 300 are not constant, but can be adjusted according to the working conditions.

[0074] Since the processing times for each station vary, to avoid unnecessary waiting, the needle winding assembly 300 at the corresponding station can initiate station switching immediately after the shorter processing time is completed, without waiting for the longer processing time to finish. At this time, because some longer processing times are still occupied, the winding device 10 in this application also has a waiting position for temporary buffering and scheduling of the needle winding assembly 300, ensuring smooth operation. The waiting position is generally located between the unloading station and the winding station. Furthermore, a locking mechanism 700 can be provided at the waiting position to ensure that the needle winding assembly 300 in the waiting position also maintains a stable position.

[0075] It should be noted that the "waiting position" referred to in this application is not limited to a fixed coordinate point, but can also be understood as a spatial area with a certain range. At this waiting position, the needle winding assembly 300 can be completely stationary or move slowly at a lower speed as needed to adapt to different process cycles. Similarly, the winding station, adhesive application station, unloading station, and other related stations or positions involved in this application are all subject to the same definition. It can be a precise single location point or an area that allows for some movement, and can be flexibly set according to the actual working conditions.

[0076] For example, the blanking process is usually the most time-consuming process in battery cell manufacturing. Therefore, after winding, the pin winding assembly 300 at the winding station moves out of the winding station and eventually enters the adhesive application station. The pin winding assembly 300 in the waiting position moves into the winding station, while the pin winding assembly 300 at the blanking station continues its blanking operation. After adhesive application is completed, the pin winding assembly 300 at the blanking station also completes its blanking. At this point, the pin winding assemblies 300 at the adhesive application station and the blanking station can be moved to the blanking station and the waiting position, respectively. By repeating this cycle, continuous battery cell manufacturing can be achieved. As can be seen, while waiting for blanking to be completed, the remaining pin winding assemblies 300 can switch stations and perform corresponding operations, making full use of and reducing the waiting time between processes, thus significantly improving production efficiency.

[0077] Furthermore, in this embodiment, the rotating mechanism further includes a second rotating mechanism 200, the drive end of which can selectively engage with one of the needle winding assembly 300. The drive end of the second rotating mechanism 200 can only engage with one of the needle winding assemblies 300 at a time, thus the second rotating mechanism 200 can only drive one needle winding assembly 300 to move circumferentially along the first rotating axis at a time. Moreover, to avoid interference, each needle winding assembly 300 can only engage with the drive end of at most one of the first rotating mechanism 100 and the second rotating mechanism 200 at any given time.

[0078] As can be seen, the second rotating mechanism 200 can independently adjust the circumferential position of a single needle winding assembly 300, enabling the single needle winding assembly 300 to perform actions such as station switching or phase compensation within the station without affecting the normal operation of other needle winding assemblies 300. The design of two separate rotating mechanisms significantly improves the flexibility of station switching and the timing matching capability.

[0079] Optionally, a collar 610 is provided on the support plate 600. Multiple collars 610 are generally provided and spaced apart along the axial direction of the rotating rod 120. The collar 610 is rotatably fitted onto the rotating rod 120, meaning the collar 610 and the rotating rod 120 are connected by a clearance fit or through a bearing, allowing the collar 610 to rotate freely relative to the rotating rod 120 while maintaining radial positioning. The collar 610 can position the support plate 600 and the needle coil assembly 300 mounted on the support plate 600. When the needle coil assembly 300 moves around the rotating rod 120 under the drive of the second rotating mechanism 200, the collar 610, engaged along the outer circumferential surface of the rotating rod 120, effectively constrains the movement trajectory of the needle coil assembly 300, suppressing swaying or shaking during rotation and significantly improving operational stability.

[0080] Of course, from a functional perspective, setting only one rotation mechanism, such as the first rotation mechanism 100, can also accommodate the revolution of any needle winding assembly 300 and the circumferential position adjustment of a single needle winding assembly 300. Specifically, when any needle winding assembly 300 needs to revolve, the corresponding needle winding assembly 300 remains engaged with the drive end of the rotation mechanism, thereby achieving synchronous rotation; while when it is necessary to adjust the circumferential position of a single needle winding assembly 300, only that needle winding assembly 300 is engaged with the drive end of the rotation mechanism, and the other needle winding assemblies 300 are disengaged from the drive end, thereby cutting off power transmission and keeping them stationary or allowing relative movement.

[0081] Please refer to the following: Figure 2 and Figure 4 In this embodiment, a first clutch mechanism 400 is provided between each needle winding assembly 300 and the rotating rod 120. Each needle winding assembly 300 is connected to a first holding member 410. The first clutch mechanism 400 includes a first driving member 420 assembled on the rotating rod 120 and a first sliding plate 430 that is pulsatorically connected to the first driving member 420. A first slot 431 adapted to the first holding member 410 is provided on the first sliding plate 430.

[0082] The first holding member 410 can be in the form of a cam, slider, etc., and the opening of the first slot 431 faces the corresponding first holding member 410. With the support plate 600 provided, the first holding member 410 can be mounted on the support plate 600 for easy installation. The first driving member 420 can use a cylinder as a power source, and the first sliding plate 430 is slidably mounted on the rotating rod 120 through a guide rail and slider cooperation, thus enabling it to reciprocate relative to the first holding member 410 under the drive of the first driving member 420.

[0083] Furthermore, the first driving member 420 can drive the first sliding plate 430 to slide along the rotating rod 120 and force the first holding member 410 to engage or disengage from the first slot 431. When the first holding member 410 engages with the first slot 431, the needle winding assembly 300 engages with the rotating rod 120, that is, establishes a connection with the driving end of the first rotating mechanism 100; when the first holding member 410 disengages from the first slot 431, the needle winding assembly 300 disengages from the rotating rod 120, that is, disconnects from the driving end of the first rotating mechanism 100. Through this clutch structure, it is possible to flexibly control whether each needle winding assembly 300 participates in the revolution, thereby meeting different winding process requirements, and also facilitating independent adjustment or replacement of individual needle winding assemblies 300.

[0084] In addition, please refer to again Figure 1 and Figure 3 In this embodiment, the second rotating mechanism 200 includes a second driving component 210 and a swing plate 220. The swing plate 220 is rotatably sleeved on the rotating rod 120 and is connected to the second driving component 210 in a transmission manner. The swing plate 220 can be selectively engaged with the needle winding component 300.

[0085] A gap may be left between the swing plate 220 and the rotating rod 120, forming a loose fit so that the swing plate 220 does not rotate with the rotating rod 120. Alternatively, the swing plate 220 can be rotatably mounted to the rotating rod 120 via bearings or other components. Specifically, the second drive assembly 210 can be a servo motor and a reducer, connected to the swing plate 220 via gears, a synchronous belt, or a linkage mechanism. Driven by the second drive assembly 210, the swing plate 220 reciprocates around the axis of the rotating rod 120, i.e., the first rotation axis. The second drive assembly 210 can also be mounted on the base of the first rotating mechanism 100 to maintain a stable position.

[0086] Since the rotational motion of the rotating rod 120 is not transmitted to the oscillating plate 220, and their movements are independent, the second rotating mechanism 200 can independently drive the winding needle assembly 300 to move around the rotating rod 120 without relying on the rotating rod 120. Moreover, since the oscillating plate 220 and the rotating rod 120 are coaxially nested, not only is axial space saved, but motion interference between multiple drive mechanisms is also avoided, improving the flexibility and compactness of the winding device 10.

[0087] When the second rotating mechanism 200 needs to adjust the position of a certain needle winding assembly 300, the oscillating plate 220 can first rotate to the angle position corresponding to the needle winding assembly 300 and engage with it. Subsequently, the second driving assembly 210 drives the oscillating plate 220 to rotate around the first rotation axis, thereby driving the needle winding assembly 300 to move along the annular guide rail 130. When it is necessary to switch to another needle winding assembly 300, the oscillating plate 220 first separates from the current needle winding assembly 300, then rotates to the target position and completes engagement.

[0088] Furthermore, in this embodiment, a second clutch mechanism 500 is provided on the swing plate 220, and each coiling needle assembly 300 is connected to a second holding member 510. The second clutch mechanism 500 includes a second driving member 520 assembled on the swing plate 220 and a second sliding plate 530 that is pulsatorically connected to the second driving member 520. A second slot 531 adapted to the second holding member 510 is provided on the second sliding plate 530.

[0089] The second clutch mechanism 500 is structurally similar to the first clutch mechanism 400. Specifically, the second holding member 510 can adopt a cam, slider, or other structural form, and the opening of the second slot 531 generally faces the corresponding second holding member 510. With the support plate 600 provided, the second holding member 510 can also be mounted on the support plate 600 for ease of installation. The second driving member 520 can use a cylinder as its power source, and the second sliding plate 530 is slidably mounted on the swing plate 220 via a guide rail and slider, thus enabling it to reciprocate relative to the second holding member 510 under the drive of the second driving member 520.

[0090] The second driving member 520 can drive the second sliding plate 530 to slide along the swing plate 220, and force the second holding member 510 to engage or disengage from the second slot 531. When the second holding member 510 engages with the second slot 531, the needle winding assembly 300 engages with the swing plate 220, that is, it establishes a connection with the driving end of the second rotating mechanism 200; when the second holding member 510 disengages from the second slot 531, the needle winding assembly 300 separates from the swing plate 220, that is, it disconnects from the driving end of the second rotating mechanism 200. Through this clutch structure, the swing plate 220 can reliably engage or disengage with the target needle winding assembly 300, meeting the process requirements of multi-station or alternating winding.

[0091] The aforementioned winding device 10 and cell processing equipment are equipped with a locking mechanism 700 at each station, and each winding needle assembly 300 is correspondingly equipped with a positioning part 301. When the winding needle assembly 300 moves to any station, the locking member 710 at that station can form a locking engagement with the positioning part 301 on the winding needle assembly 300, thereby reliably positioning the winding needle assembly 300 at each station and keeping it stationary. Compared to relying solely on the self-locking mechanism of the rotation mechanism, the locking engagement of the locking member 710 with the positioning part 301 strengthens the constraint on the winding needle assembly 300, effectively preventing the winding needle assembly 300 from shaking during its stay at the station. Therefore, the aforementioned winding device 10 and cell processing equipment can effectively improve the stability of the winding needle assembly 300, ensuring precise execution of each process and thus improving the winding quality of the cell.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A winding device, characterized in that, It includes a rotating mechanism, a needle winding assembly, and a locking mechanism; the needle winding assembly is mounted on the rotating mechanism and can revolve around a first rotating axis under the drive of the rotating mechanism to circulate between multiple workstations; each needle winding assembly is provided with a positioning part, each workstation is provided with the locking mechanism, and each locking mechanism includes a locking element.

2. The winding device according to claim 1, characterized in that, The locking member can engage with the positioning part of the needle coil assembly that has entered the corresponding workstation.

3. The winding device according to claim 2, characterized in that, When the positioning part engages with the locking member, the locking mechanism can limit the winding needle assembly along the circumferential direction of the first rotation axis.

4. The winding device according to claim 1, characterized in that, Within the winding station, each of the winding needle assemblies can be positioned circumferentially along the first rotation axis under the drive of the rotation mechanism.

5. The winding device according to claim 4, characterized in that, The locking member can be adjusted in position along a first direction to remain opposite to the positioning part of the needle coil assembly entering the corresponding work station.

6. The winding device according to claim 5, characterized in that, During the circumferential adjustment of the position of the needle coiling assembly along the first rotation axis under the drive of the rotation mechanism, the locking member that is locked to it can move along the first direction.

7. The winding apparatus according to claim 6, characterized in that, The locking mechanism includes a mounting bracket, a locking drive member, and a first slide rail. The first slide rail extends along the first direction. The locking member is slidably mounted on the first slide rail. The first slide rail is slidably mounted on the mounting bracket and connected to the locking drive member.

8. The winding apparatus according to claim 7, characterized in that, The locking member is provided with a braking element that can cooperate with the braking of the first slide rail.

9. The winding device according to claim 5, characterized in that, Each of the needle coiling assemblies is provided with a plurality of positioning parts, and the plurality of positioning parts are spaced apart, and the locking member can lock into any of the positioning parts.

10. The winding apparatus according to claim 1, characterized in that, The positioning part is configured as a groove, and the locking member can be engaged in the groove.

11. The winding apparatus according to any one of claims 1 to 10, characterized in that, The rotating mechanism includes a first rotating mechanism, which includes a first driving component, a rotating rod, and an annular track. The first driving component is pulsatorically connected to the rotating rod. The annular track is arranged around the circumference of the rotating rod, and both the annular track and the rotating rod are coaxial with the first rotation axis. Each of the needle coiling components can be slidably mounted on the annular track and can slide along the annular track under the drive of the rotating rod.

12. The winding apparatus according to claim 11, characterized in that, Multiple annular tracks are spaced apart along the axial direction of the rotating rod, and each of the needle coiling assemblies is slidably connected to multiple annular tracks via multiple connecting blocks.

13. The winding apparatus according to claim 12, characterized in that, The positioning part is disposed on any one of the connecting blocks.

14. The winding apparatus according to claim 12, characterized in that, Each of the needle winding assemblies further includes a slider, and a guide rod is provided for each of the needle winding assemblies. The guide rod extends along the axial direction of the rotating rod and is fixedly connected to the plurality of connecting blocks. The slider is slidably sleeved on the guide rod.

15. The winding apparatus according to claim 11, characterized in that, The rotating rod can engage or disengage with each of the needle winding assemblies and can drive the engaged needle winding assembly to slide along the annular track; the rotating mechanism also includes a second rotating mechanism, the drive end of which can selectively engage with one of the needle winding assemblies.

16. The winding apparatus according to claim 15, characterized in that, A first clutch mechanism is provided between each of the needle winding assemblies and the rotating rod. Each of the needle winding assemblies is connected to a first retaining member. The first clutch mechanism includes a first driving member assembled on the rotating rod and a first sliding plate that is pulsatorically connected to the first driving member. A first slot adapted to the first retaining member is provided on the first sliding plate.

17. The winding apparatus according to claim 16, characterized in that, The first driving member can drive the first sliding plate to slide along the rotating rod and force the first holding member to engage or disengage from the first slot, so that the rotating rod engages or disengages from the corresponding needle coiling assembly.

18. The winding apparatus according to claim 15, characterized in that, The second rotating mechanism includes a second driving component and a swing plate. The swing plate is rotatably sleeved on the rotating rod and is connected to the second driving component in a transmission manner. The swing plate can selectively engage with the needle winding component.

19. The winding apparatus according to claim 18, characterized in that, The swing plate is provided with a second clutch mechanism, and each of the needle winding assemblies is connected to a second holding member. The second clutch mechanism includes a second driving member assembled on the swing plate and a second sliding plate that is pulsatorically connected to the second driving member. The second sliding plate is provided with a second slot that is adapted to the second holding member.

20. The winding apparatus according to claim 19, characterized in that, The second driving member can drive the second sliding plate to slide along the swing plate and force the second holding member to engage or disengage from the second slot, so that the swing plate engages or disengages from the corresponding winding needle assembly.

21. The winding apparatus according to claim 1, characterized in that, It also includes a support plate corresponding to each of the needle winding assemblies, the needle winding assembly being slidably mounted on the corresponding support plate and being connected to the rotating mechanism via the support plate.

22. A battery cell processing equipment, characterized in that, Includes the winding device as described in any one of claims 1 to 21 above.

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