Battery cell pole piece winding device

Abstract

The utility model discloses a winding device for a battery cell pole piece. The winding device comprises a turntable, two winding mechanisms arranged on the turntable, and a partition plate arranged between the two winding mechanisms, the winding mechanism comprises a winding shaft, a vertical plate supported at one end of the winding shaft and a supporting unit arranged at the other end of the winding shaft. The end part of the reel penetrates through the upper end of the vertical plate and is movably connected with the upper end of the vertical plate; the supporting unit comprises a connecting rod and a driving unit connected to the middle of the connecting rod. And the other end of the connecting rod is selectively connected with the other end of the reel under the driving of the driving unit. The two winding mechanisms are placed on the rotating turntable, the two winding mechanisms can be switched between the winding station and the discharging station in turn, and when one winding mechanism carries out the winding process, the other winding mechanism carries out the discharging process, so that the production continuity is higher. The two winding mechanisms are horizontally arranged, the position of the discharging station is single and fixed, the transfer trolley can collect the roll cores more conveniently, and operation of operators is more labor-saving.

Description

Technical Field

[0001] The utility model relates to the field of battery cell pole piece winding, in particular to a battery cell pole piece winding device. Background Art

[0002] Lithium-ion battery winding machines are machines that wind positive and negative electrode sheets and separators into one body to form a battery cell. In the rolling process of existing lithium-ion battery cell electrodes, in order to ensure continuous production, multiple winding mechanisms are usually set up so that winding and unloading can be carried out simultaneously. The existing winding mechanism is designed with a slip shaft on the upper and lower sides of the winding side. This design will have the following problems: when the winding diameter is large, due to the overall height limitation of the equipment, the lower shaft position will be lower and the upper shaft position will be higher, causing the operator to bend over and raise his hands when unloading and lowering the barrel, which is easy to make people tired; when unloading at the upper shaft position, the unloading trolley needs to raise the lifting mechanism to about 1.7 meters before it can dock with the slip shaft for unloading, which has a high risk of operation. Utility Model Content

[0003] The purpose of the utility model is to provide a battery cell pole piece winding device to solve the problems raised in the above background technology and realize

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model discloses a battery cell electrode winding device, comprising a turntable, a plurality of winding mechanisms arranged on the turntable, and a partition separating the plurality of winding mechanisms; the winding mechanism comprises a reel, a vertical plate supported at one end of the reel, and a support unit arranged at the other end of the reel; wherein the lower end of the vertical plate is connected to the turntable, and the end of the reel passes through the upper end of the vertical plate and is movably connected thereto; the support unit comprises a connecting rod and a driving unit connected to the middle part of the connecting rod; one end of the connecting rod is pivotally connected to the partition, and the other end is selectively connected to the other end of the reel under the drive of the driving unit.

[0006] The turntable can rotate horizontally, driving the two winding mechanisms to switch back and forth between the winding station and the unloading station. After one of the winding mechanisms completes winding the pole piece, the turntable rotates to turn the empty winding mechanism on the other side to the winding station, and continues to wind the pole piece without stopping the machine. At this time, the winding mechanism that winds the pole piece is at the unloading station, unloading the pole piece from the reel and waiting for the next winding.

[0007] Further solution: the two winding mechanisms are symmetrically arranged about the center of the turntable.

[0008] The turntable rotates 180° each time to ensure that the two winding mechanisms can be in the same position of the winding station.

[0009] Further solution: the turntable includes a turntable body and a turntable motor that drives the turntable body to rotate.

[0010] Further solution: the reel includes a slip shaft and a reeling motor that drives the slip shaft to rotate.

[0011] Further solution: the driving unit is a linear cylinder.

[0012] Further solution: one end of the connecting rod connected to the reel has a hook portion matching the outer circumference of the reel.

[0013] The hook portion is semicircular, with an opening facing upward; when winding, the hook portion provides support for the reel, thereby increasing the reliability of the connection between the connecting rod and the reel.

[0014] A further solution includes a discharge mechanism, which includes a push rod and a pushing unit for driving the push rod to move; a long groove parallel to the reel is opened on the turntable, and the push rod slides back and forth in the long groove.

[0015] When the pole piece is wound, the push rod moves from one end of the long slot to the other end, pushes the pole piece horizontally from one side, separates it from the reel, and collects the pole piece on the transfer trolley. After completion, the push rod returns to the starting point under the action of the push unit.

[0016] Further solution: the pushing unit includes a linear guide rail installed at the bottom of the turntable, a slider rotatably connected to the lead screw of the linear guide rail, and the lower end of the push rod is fixedly connected to the slider.

[0017] The screw rotates, driving the slider to move horizontally, and the slider drives the push rod to move linearly.

[0018] The linear cylinder is telescopic and drives the connecting rod to rotate with the pivot point as the center of the circle. When the end of the connecting rod is connected to the end of the reel, the linear cylinder plays a certain supporting role to ensure that the reel remains balanced. When the reel needs to be unloaded, the end of the connecting rod is separated from the end of the reel to remove the wound pole piece from this end.

[0019] A further solution includes a bracket disposed on one side of the vertical plate for supporting the wound pole piece.

[0020] The top of the bracket is an arc-shaped stripping rod, which is located directly below the reel and the distance from the reel is the maximum thickness of the winding pole piece. When unloading is required, the connecting rod rotates, and the reel loses balance due to the weight of the winding pole piece itself. The bracket can provide temporary support for the reel to prevent the reel from tilting.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model places two winding mechanisms on a rotating turntable. When the turntable rotates, the two winding mechanisms switch alternately between the winding station and the unloading station. When one winding mechanism performs the winding process, the other winding mechanism performs the unloading process, so that the production continuity is stronger and there is no need to stop the machine.

[0023] The two winding mechanisms are arranged horizontally, and the unloading station is single and fixed, making it more convenient for the transfer cart to collect the roll cores. Operators do not need to bend over or raise their hands when unloading, which is more labor-saving. The position of the transfer cart is relatively fixed during unloading, and the operation risk is relatively small. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view of the utility model;

[0025] Figure 2 It is a three-dimensional diagram of the utility model;

[0026] Figure 3 It is a side view of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the support unit in the utility model;

[0028] In the figure: 1-turntable, 11-turntable body, 12-turntable motor, 13-long slot, 2-winding mechanism, 21-reel, 211-slip shaft, 212-winding motor, 22-vertical plate, 23-support unit, 231-connecting rod, 2311-hook part, 232-driving unit, 3-partition, 4-unloading mechanism, 41-push rod, 42-pushing unit, 421-linear guide, 422-slider, 5-bracket. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 a limitation on the present utility model.

[0031] See also Figure 1-4 In this embodiment, a battery cell electrode winding device includes a turntable 1, two winding mechanisms 2 arranged on the turntable 1, and a partition 3 separating the two winding mechanisms 2; the winding mechanism 2 includes a reel 21, a vertical plate 22 supported at one end of the reel 21, and a support unit 23 arranged at the other end of the reel 21; wherein the lower end of the vertical plate 22 is connected to the turntable 1, and the end of the reel 21 passes through the upper end of the vertical plate 22 and is movably connected thereto; the support unit 23 includes a connecting rod 231 and a driving unit 232 connected to the middle of the connecting rod 231; one end of the connecting rod 231 is pivotally connected to the partition 3, and the other end is selectively connected to the other end of the reel 21 under the drive of the driving unit 232. The turntable 1 can rotate horizontally, driving the winding mechanism 2 to switch positions. After one of the winding mechanisms 2 completes winding the pole piece, the turntable 1 rotates to rotate the empty winding mechanism on the other side to the winding station, and continues to wind the pole piece without stopping the machine. At this time, the winding mechanism 2 that winds the pole piece is at the unloading station, unloading the pole piece from the reel 21, and waiting for the next winding.

[0032] Furthermore, the two winding mechanisms 2 are symmetrically arranged about the center of the turntable 1. The turntable 1 rotates 180 degrees each time to ensure that the two winding mechanisms 2 are at the same position of the winding station.

[0033] Furthermore, the turntable 1 includes a turntable body 11 and a turntable motor 12 for driving the turntable body 11 to rotate. The turntable motor 12 is disposed below the turntable body 11 and drives the turntable to stop after each rotation of 180°.

[0034] Furthermore, the reel 21 includes a slip shaft 211 and a reeling motor 212 that drives the slip shaft 211 to rotate.

[0035] Furthermore, the driving unit 232 is a linear cylinder. The linear cylinder is extended and retracted to drive the connecting rod 231 to rotate with the pivot point as the center of the circle. When the end of the connecting rod 231 is connected to the end of the reel 21, the linear cylinder plays a certain supporting role to ensure that the reel 21 remains balanced. When unwinding is required, the end of the connecting rod 231 is separated from the end of the reel 21, so that the wound pole piece is removed from this end.

[0036] Further, one end of the connecting rod 231 connected to the reel 21 has a hook portion 2311 that matches the outer periphery of the reel 21. The hook portion 2311 is semicircular, with an opening facing upward, and the hook portion 2311 increases the reliability of the connection between the connecting rod 231 and the reel 21.

[0037] Furthermore, the device also includes a discharge mechanism 4, which includes a push rod 41 and a pushing unit 42 for driving the push rod 41 to move; a long slot 13 parallel to the reel 21 is provided on the turntable 1, and the push rod 41 slides back and forth in the long slot 13. When the winding pole piece is completed, the push rod 41 moves from one end of the long slot 13 to the other end, and pushes the wound pole piece horizontally from one side thereof, thereby separating it from the reel 21, and then collecting the wound pole piece on the transfer trolley. After completion, the push rod 41 moves back under the action of the pushing unit 42 and returns to the starting point.

[0038] Further, the pushing unit 42 includes a linear guide rail 421 installed at the bottom of the turntable 1, a slider 422 rotatably connected to the screw rod of the linear guide rail 421, and the lower end of the push rod 41 is fixedly connected to the slider 422. The screw rod rotates to drive the slider 422 to move horizontally, and the slider 422 drives the push rod 41 to move linearly.

[0039] Furthermore, the device also includes a bracket 5 for supporting the winding pole piece, which is arranged on one side of the vertical plate 22. The top of the bracket 5 is an arc rod, which is located directly below the reel 21, and the distance between the arc rod and the reel 21 is the maximum thickness value of the winding pole piece. When unloading is required, the connecting rod 231 rotates, and the reel 21 may lose balance due to the excessive weight of the winding pole piece itself. The bracket 5 can provide temporary support for the reel 21 to prevent the reel 21 from tilting.

[0040] When the utility model is in use, the turntable 1 is adjusted so that the empty winding mechanism 2 is placed on the winding station (at this time, the other winding mechanism 2 is at the unloading station), and the reel 21 rotates to reel the pole piece; when the reeling is completed, the turntable 1 rotates 180° to rotate the other winding mechanism 2 to the winding station to carry out the pole piece winding process; at this time, the winding mechanism 2 with the pole piece wound is at the unloading station, and the push rod 41 is started to push the pole piece horizontally outward along the axis direction of the reel 21, so that the wound pole piece is unloaded from the reel 21, and the pole piece falls onto the transfer trolley. After the winding process of the winding mechanism 2 at the winding station is completed, the turntable 1 rotates 180° again, and this cycle is repeated to allow the winding and unloading to be carried out uninterruptedly.

[0041] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0042] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A battery cell pole piece winding device, characterized in that: The invention comprises a rotating disk (1), a plurality of winding mechanisms (2) arranged on the rotating disk (1), and a partition (3) separating the plurality of winding mechanisms (2); the winding mechanism (2) comprises a reel (21), a vertical plate (22) supported at one end of the reel (21), and a support unit (23) arranged at the other end of the reel (21); wherein the lower end of the vertical plate (22) is connected to the rotating disk (1), and the end of the reel (21) passes through the upper end of the vertical plate (22) and is movably connected thereto; the support unit (23) comprises a connecting rod (231) and a driving unit (232) connected to the middle of the connecting rod (231); one end of the connecting rod (231) is pivotally connected to the partition (3), and the other end is selectively connected to the other end of the reel (21) under the drive of the driving unit (232).

2. The battery cell pole piece winding device according to claim 1, characterized in that: The two winding mechanisms (2) are arranged symmetrically about the center of the turntable (1).

3. The battery cell pole piece winding device according to claim 1, characterized in that: The turntable (1) comprises a turntable body (11) and a turntable motor (12) for driving the turntable body (11) to rotate.

4. The battery cell pole piece winding device according to claim 1, characterized in that: The reel (21) comprises a slip shaft (211) and a reeling motor (212) that drives the slip shaft (211) to rotate.

5. The battery cell pole piece winding device according to claim 1, characterized in that: The driving unit (232) is a linear cylinder.

6. The battery cell pole piece winding device according to claim 1, characterized in that: One end of the connecting rod (231) connected to the reel (21) has a hook portion (2311) matching the outer circumference of the reel (21).

7. The battery cell pole piece winding device according to claim 1, characterized in that: The invention also comprises a discharge mechanism (4), wherein the discharge mechanism (4) comprises a push rod (41) and a pushing unit (42) for driving the push rod (41) to move; a long groove (13) parallel to the reel (21) is provided on the turntable (1), and the push rod (41) slides back and forth in the long groove (13).

8. The battery cell pole piece winding device according to claim 7, characterized in that: The pushing unit (42) comprises a linear guide rail (421) installed at the bottom of the turntable (1), and a slider (422) rotatably connected to the screw rod of the linear guide rail (421); the lower end of the push rod (41) is fixedly connected to the slider (422).

9. The battery cell pole piece winding device according to claim 1, characterized in that: It also includes a bracket (5) arranged on one side of the vertical plate (22) and used for supporting the wound pole piece.

10. The battery cell pole piece winding device according to claim 1, characterized in that: The rotation angle of the turntable is 180° each time.

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