Battery cell winding device

Abstract

The present invention provides a battery cell winding device, comprising a winding mechanism, an extrusion mechanism, a support frame, a plurality of raw material rollers, a feed roller assembly and a shaping part, wherein the plurality of raw material rollers are used to support pole pieces and isolation membranes, and the pole pieces and isolation membranes on the plurality of raw material rollers are fed to the winding mechanism located at the winding position by two feed rollers through a feeding gap; the pole pieces and isolation membranes are wound on a fixed cylinder through a first adjustment gap of a winding cylinder, and the winding cylinder is sleeved on the fixed cylinder and is rotatably connected with the fixed cylinder, so that the pole pieces and isolation membranes form a battery cell on the fixed cylinder through rotation. After the battery cell is wound, the fixed cylinder moves toward the center of the winding mechanism under the action of the second adjustment gap to separate from the battery cell, and then the winding mechanism is driven by the fixed cylinder to an avoidance position; at the same time, the battery cell separated from the fixed cylinder is supported by the shaping part. Finally, the extrusion mechanism squeezes the battery cell on the shaping part. The problem that the processing process of the battery cell winding device in the prior art is relatively cumbersome is solved.

Description

Technical Field

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

[0002] The battery cell of the square aluminum shell battery is composed of positive electrode material, negative electrode material and a separator. The positive electrode and the negative electrode are wound with the separator to form a finished battery cell.

[0003] At present, for the winding of the battery cell of the square aluminum shell battery, the isolation film, as well as the positive and negative electrode materials need to be placed at the same time to be rolled into a tube, and then moved to the next mechanism to be flattened to form a battery cell.

[0004] However, since the battery cell cannot be extruded immediately after winding, an additional conveying process is required, which makes the processing more complicated. In addition, since the wound battery cell lacks internal support during the extrusion process, the innermost positive and negative electrode materials or isolation membranes are prone to folding or misalignment during extrusion. Summary of the invention

[0005] The main purpose of the present invention is to provide a battery cell winding device to solve the problem that the processing process of the battery cell winding device in the prior art is relatively complicated.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a battery cell winding device, comprising a workbench, a winding mechanism for winding the battery cell and an extrusion mechanism for extruding the battery cell, wherein the extrusion mechanism and the winding mechanism are both arranged on the workbench; the battery cell winding device also includes: a support frame, which is arranged on one side of the extrusion mechanism; a plurality of raw material rollers, which are arranged on the support frame, each of which is used to support the winding of the electrode piece or the isolation film; a feeding roller assembly, which is arranged on the support frame and is located on the side of the plurality of raw material rollers close to the extrusion mechanism, the feeding roller assembly includes two feeding rollers, and a feeding gap is provided between the two feeding rollers, so that the electrode pieces and the isolation films on the plurality of raw material rollers are transported to the winding mechanism by the two feeding rollers through the feeding gap; the winding mechanism includes a winding drum and a fixed drum, the winding drum has a first adjustment gap, the winding drum is sleeved on the fixed drum and is rotatably connected to the fixed drum, so that the electrode pieces and the isolation films The isolation film is wound on the fixed drum through a first adjustment gap to form a battery cell; the fixed drum has a second adjustment gap that allows it to be movably arranged along the radial direction of the winding mechanism, so that when the fixed drum moves in a direction away from the center of the winding mechanism, the fixed drum winds and supports the battery cell, and when the fixed drum moves in a direction close to the center of the winding mechanism, the fixed drum is separated from the battery cell; the winding mechanism has a winding position located inside the extrusion mechanism and an escape position located outside the extrusion mechanism, and the fixed drum is movably arranged on the workbench so that the winding mechanism moves between the winding position and the escape position, so that after the fixed drum is separated from the battery cell, the fixed drum drives the winding mechanism to move from the winding position to the escape position; a shaping part is arranged on the workbench, and the shaping part is used to support the battery cell after the battery cell is separated from the fixed drum, so that the extrusion mechanism squeezes the battery cell on the shaping part.

[0007] Furthermore, the battery cell winding device also includes: a moving mechanism, which is movably arranged on the workbench, the moving mechanism includes a placing plate, the placing plate has a supporting position located in the fixed cylinder to prop up the fixed cylinder and a separation position separated from the fixed cylinder, the placing plate is movably arranged between the supporting position and the separation position, and in the process of the placing plate moving from the supporting position to the separation position, the fixed cylinder moves toward a direction close to the center of the winding mechanism, and the second adjustment gap is reduced; wherein, the placing plate has a placing groove for placing the molding part; a clamping mechanism, including a first clamping member and a second clamping member, and in the process of the placing plate moving from the supporting position to the separation position, the moving mechanism drives the first clamping member to move toward a direction close to the second clamping member to clamp the molding part and separate the molding part from the placing plate.

[0008] Furthermore, the battery cell winding device also includes: a first driving component, which is driven and connected to the moving mechanism and the fixed cylinder, so that the moving mechanism and the winding mechanism move toward or away from each other, so that the placement plate moves between the supporting position and the separation position, and the winding mechanism moves between the winding position and the avoidance position.

[0009] Furthermore, the fixed cylinder includes two fixed half-cylinders, a second adjustment gap is provided between the two fixed half-cylinders, and the two fixed half-cylinders are both provided with abutment blocks, fixing frames and adjustment components; the abutment blocks are arranged on the inner walls of the fixed half-cylinders, and when the placement plate is in the supporting position, the abutment blocks on the two fixed half-cylinders are located on the opposite sides of the placement plate and are both abutted against the placement plate; the fixing frame is provided with through holes for penetrating the abutment blocks; the adjustment component includes a first slider and a first elastic member, the first slider is fixedly connected to the fixed half-cylinder, the fixing frame is provided with a first slide groove for accommodating the first slider and the first elastic member, one end of the first elastic member is connected to the first slider, and the other end of the first elastic member is connected to the inner wall of the first slide groove.

[0010] Furthermore, the first driving assembly includes: a first driving member, which is arranged on the workbench; a first rotating rod, the first driving member is drivingly connected to the first rotating rod to drive the first rotating rod to rotate; the first rotating rod has a first threaded portion and a second threaded portion, and the thread rotation directions of the first threaded portion and the second threaded portion are opposite; two moving blocks, one moving block is threadedly connected to the first threaded portion and fixedly connected to the fixed cylinder, and the other moving block is threadedly connected to the second threaded portion and connected to the placement plate, so that the two moving blocks move toward or away from each other.

[0011] Furthermore, the moving mechanism also includes a first connecting member and a second connecting member, the first connecting member is fixedly connected to the placement plate, the first connecting member is movably connected to the second connecting member, and the second connecting member is fixedly connected to the moving block; the first connecting member is used to drive the first clamping member to move, and in the process of the placement plate moving from the supporting position to the separation position, the first connecting member moves relative to the second connecting member to drive the first clamping member to move in a direction close to the second clamping member.

[0012] Furthermore, the first connecting member includes a connecting block and a fixed column, the connecting block is sleeved on the second connecting member and is movably arranged in a vertical direction relative to the second connecting member; the first clamping member is movably inserted in a movable groove of the second clamping member in a vertical direction, and the second clamping member is provided with a connecting groove, and the connecting groove is connected to the movable groove; the clamping mechanism also includes: an insertion rod, which is movably arranged on the workbench in a vertical direction; a moving member, which is fixedly connected to the insertion rod, and the moving member is fixedly connected to the first clamping member through the moving groove; a second elastic member, which is sleeved on the insertion rod, one end of the second elastic member is connected to the workbench, and the other end of the second elastic member is connected to the moving member; a fixed plate, which is arranged on the workbench, and a guide groove is provided on the fixed plate, and the guide groove includes an oblique groove and a horizontal groove, and one end of the oblique groove The movable member is connected to the horizontal groove, and the other end of the inclined groove extends toward the direction close to the winding mechanism and is arranged higher than one end of the inclined groove. The fixed column is slidably arranged in the guide groove so that the fixed column is pressed on the movable member during the process of the placement plate moving from the supporting position to the separation position, so that the movable member and the first clamping member move downward in the vertical direction; and / or, the moving mechanism also includes a third elastic member, which is sleeved on the second connecting member and located between the first connecting member and the second connecting member, one end of the third elastic member is connected to the first connecting member, and the other end of the third elastic member is connected to the second connecting member; and / or, a card block is arranged on the first connecting member, and a card slot is arranged on the second connecting member, the card slot extends in the vertical direction, and the card block is movably arranged along the extension direction of the card slot.

[0013] Furthermore, the extrusion mechanism includes: two extrusion plates; a second driving assembly, including a second driving member and a second rotating rod, the second driving member is arranged on the workbench, and the second driving member is drivingly connected to the second rotating rod to drive the second rotating rod to rotate; the second rotating rod has a third threaded portion and a fourth threaded portion, and the thread directions of the third threaded portion and the fourth threaded portion are opposite, and the two extrusion plates are threadedly connected to the third threaded portion and the fourth threaded portion respectively, so that the two extrusion plates move toward or away from each other.

[0014] Furthermore, a groove is provided on the workbench, and the groove is used to accommodate one of the two extrusion plates in a lower position; the second driving member is arranged in the accommodating cavity of the workbench, and the second rotating rod passes through the table top of the workbench and is connected to the two extrusion plates; and / or, the battery cell winding device also includes: a tool holder, which is arranged on the support frame; a cutter, which is arranged on the extrusion plate located at a higher position among the two extrusion plates, so that the extrusion plate drives the cutter to move toward the tool holder to cut off the pole piece and the isolation membrane between the tool holder and the cutter.

[0015] Furthermore, the battery cell winding device also includes: a support plate, fixedly connected to the fixed cylinder; a third driving member, arranged on the support plate; a roller, the third driving member is drivingly connected to the roller to drive the roller to rotate; the roller abuts against the winding drum so that the roller drives the winding drum to rotate; and / or the winding drum includes two winding half-cylinders, and a first adjustment gap is provided between the two winding half-cylinders; and / or a second slide groove extending along the circumferential direction thereof is provided on the inner wall of the winding drum, and a second slider extending along the circumferential direction thereof is provided on the fixed cylinder, and the second slider is slidably provided in the second slide groove.

[0016] According to the technical solution of the present invention, the cell winding device includes a workbench, a winding mechanism, an extrusion mechanism, a support frame, a plurality of raw material rollers, a feed roller assembly and a shaping part. The plurality of raw material rollers and the feed roller assembly are all arranged on the support frame. The plurality of raw material rollers are used to support the winding of pole pieces and isolation membranes. The pole pieces and isolation membranes on the plurality of raw material rollers are transported to the winding mechanism located at the winding position by two feed rollers through the feeding gap; wherein the pole pieces and isolation membranes are wound on the fixed cylinder through the first adjustment gap of the winding cylinder, and the winding cylinder is sleeved on the fixed cylinder and is rotatably connected with the fixed cylinder, so that the pole pieces and isolation membranes form a cell on the fixed cylinder through rotation. After the cell is wound, the fixed cylinder moves toward the center of the winding mechanism under the action of the second adjustment gap, so that the fixed cylinder is separated from the cell; after the fixed cylinder is separated from the cell, the winding mechanism is driven by the fixed cylinder to move to the avoidance position; at the same time, the cell separated from the fixed cylinder is supported by the shaping part. Finally, the extrusion mechanism extrudes the cell on the shaping part to complete the extrusion molding. It can be seen that the battery cell winding device completes the winding and extrusion of the battery cell through the setting of the above-mentioned structure, simplifies the processing process, and solves the problem of complicated processing process of the battery cell winding device in the prior art. During extrusion molding, the molding part plays a role of supporting the battery cell, avoiding the folding or misalignment of the electrode sheet and the isolation membrane, thereby improving the quality of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram showing an embodiment of a battery cell winding device according to the present invention is shown;

[0019] Figure 2 A disassembled diagram of a winding mechanism and a moving mechanism of a battery cell winding device according to the present invention is shown;

[0020] Figure 3 A disassembled diagram of a winding mechanism of a battery cell winding device according to the present invention is shown;

[0021] Figure 4 A schematic diagram showing a workbench of a battery cell winding device according to the present invention is shown;

[0022] Figure 5 A disassembled diagram of a clamping mechanism of a battery cell winding device according to the present invention is shown;

[0023] Figure 6 A disassembled view of a first connector and a second connector of a battery cell winding device according to the present invention is shown;

[0024] Figure 7 A schematic diagram showing an extrusion mechanism of a battery cell winding device according to the present invention is shown;

[0025] Figure 8 A schematic diagram showing a moving mechanism of a battery cell winding device according to the present invention is shown;

[0026] Fig. 9 A schematic diagram showing a third slider, a support plate, a roller, and a third driving member of the battery cell winding device according to the present invention is shown;

[0027] Fig.10 A schematic diagram showing a raw material roller, a feed roller assembly and a support frame of a battery cell winding device according to the present invention is shown;

[0028] Fig.11 A process flow chart of an embodiment of a battery cell winding device according to the present invention is shown.

[0029] The above drawings include the following reference numerals:

[0030] 1. Workbench;

[0031] 2. Winding mechanism; 20. Winding drum; 21. Fixed drum; 22. First slider; 23. First elastic member; 24. First slide groove; 25. Fixed frame; 26. Through hole; 27. Abutment block; 28. Second slider; 29. ​​Second slide groove; 210. Second adjustment gap; 211. Fixed half drum; 212. Winding half drum; 213. First adjustment gap;

[0032] 30. Connecting frame; 31. Moving block; 32. First rotating rod; 33. First driving member; 34. Through slot; 35. Placement plate; 36. Forming part; 37. Placement slot; 38. Reinforcement part; 39. Connecting block; 310. First connecting member;

[0033] 40. Fixed column; 41. Card slot; 42. Second connecting member; 43. Card block; 44. Third elastic member; 45. Guide groove; 46. Fixed plate; 47. Insertion rod; 48. Moving member; 49. Second elastic member;

[0034] 50, first clamping member; 51, connecting groove; 52, second clamping member; 53, gasket; 54, moving groove; 55, extrusion plate; 56, second driving member; 57, second rotating rod; 58, groove; 59, pad;

[0035] 60. third slide groove; 61. third slider; 62. support plate; 63. roller; 64. third driving member; 65. fourth slide groove;

[0036] 70. Raw material roller; 71. Cutter; 72. Feed roller; 73. Support frame; 74. Knife holder. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] The present invention provides a battery core winding device, please refer to Figures 1 to 11, including a workbench 1, a winding mechanism 2 for winding the battery cell and an extrusion mechanism for extruding the battery cell, the extrusion mechanism and the winding mechanism 2 are both arranged on the workbench 1; the battery cell winding device also includes: a support frame 73, arranged on one side of the extrusion mechanism; a plurality of raw material rollers 70, arranged on the support frame 73, each raw material roller 70 is used to support the winding of the pole piece or the isolation membrane; a feeding roller assembly, arranged on the support frame 73 and located on the side of the plurality of raw material rollers 70 close to the extrusion mechanism, the feeding roller assembly includes two feeding rollers 72, and a feeding gap is provided between the two feeding rollers 72, so that the pole pieces and the isolation membranes on the plurality of raw material rollers 70 are transported to the winding mechanism 2 by the two feeding rollers 72 through the feeding gap; the winding mechanism 2 includes a winding drum 20 and a fixed drum 21, the winding drum 20 has a first adjustment gap 213, the winding drum 20 is sleeved on the fixed drum 21 and is rotatably connected to the fixed drum 21, so that the pole pieces and the isolation membranes pass through the first adjustment gap 213 is wound on the fixed cylinder 21 to form a battery cell; the fixed cylinder 21 has a second adjustment gap 210 that is movably arranged along the radial direction of the winding mechanism 2, so that when the fixed cylinder 21 moves in a direction away from the center of the winding mechanism 2, the fixed cylinder 21 winds and supports the battery cell, and when the fixed cylinder 21 moves in a direction close to the center of the winding mechanism 2, the fixed cylinder 21 is separated from the battery cell; the winding mechanism 2 has a winding position located inside the squeezing mechanism and an escape position located outside the squeezing mechanism, and the fixed cylinder 21 is movably arranged on the workbench 1, so that the winding mechanism 2 moves between the winding position and the escape position, so that after the fixed cylinder 21 is separated from the battery cell, the fixed cylinder 21 drives the winding mechanism 2 to move from the winding position to the escape position; a shaping portion 36 is arranged on the workbench 1, and the shaping portion 36 is used to support the battery cell after the battery cell is separated from the fixed cylinder 21, so that the squeezing mechanism squeezes the battery cell on the shaping portion 36.

[0041] The battery cell winding device of the present invention includes a workbench 1, a winding mechanism 2, an extrusion mechanism, a support frame 73, a plurality of raw material rollers 70, a feed roller assembly and a shaping portion 36, wherein the plurality of raw material rollers 70 and the feed roller assembly are all arranged on the support frame 73, and the plurality of raw material rollers 70 are used to support the winding of pole pieces and isolation membranes, and the pole pieces and isolation membranes on the plurality of raw material rollers 70 are transported to the winding mechanism 2 located at the winding position by two feed rollers 72 through a feeding gap; wherein the pole pieces and isolation membranes are wound on the fixed drum 21 through a first adjustment gap 213 of the winding drum 20, and the winding drum 20 is sleeved on the fixed drum 21 and is rotatably connected to the fixed drum 21, so that the pole pieces and isolation membranes form a battery cell on the fixed drum 21 through rotation. After the battery cell is wound, the fixed cylinder 21 moves toward the center of the winding mechanism 2 under the action of the second adjustment gap 210, so that the fixed cylinder 21 is separated from the battery cell; after the fixed cylinder 21 is separated from the battery cell, the winding mechanism 2 is driven by the fixed cylinder 21 to move to the avoidance position; at the same time, the battery cell separated from the fixed cylinder 21 is supported by the shaping part 36. Finally, the extrusion mechanism extrude the battery cell on the shaping part 36 to complete the extrusion molding. It can be seen that the battery cell winding device completes the winding and extrusion of the battery cell through the setting of the above structure, simplifies the processing process, and solves the problem that the processing process of the battery cell winding device in the prior art is relatively cumbersome. During the extrusion molding, the shaping part 36 plays a role in supporting the battery cell, avoiding the folding or dislocation of the pole piece and the isolation membrane, and improving the quality of the battery cell.

[0042] Specifically, Fig.10 As shown, the cell winding device includes four raw material rollers 70, which are arranged at intervals in the vertical direction. In specific implementation, the four raw material rollers 70 are sequentially provided with positive electrode sheets, separators, negative electrode sheets, and separators, and the positive electrode sheets, separators, negative electrode sheets, and separators are stacked and wound in this order to form a cell.

[0043] In this embodiment, if Figure 2 As shown, the battery cell winding device also includes: a moving mechanism, which is movably arranged on the workbench 1, and the moving mechanism includes a placing plate 35. The placing plate 35 has a supporting position located in the fixed cylinder 21 to prop up the fixed cylinder 21 and a separation position separated from the fixed cylinder 21. The placing plate 35 is movably arranged between the supporting position and the separation position. In the process of the placing plate 35 moving from the supporting position to the separation position, the fixed cylinder 21 moves toward the direction close to the center of the winding mechanism 2, and the second adjustment gap 210 is reduced; wherein, the placing plate 35 has a placing groove 37 for placing the shaping portion 36; a clamping mechanism, including a first clamping member 50 and a second clamping member 52. In the process of the placing plate 35 moving from the supporting position to the separation position, the moving mechanism drives the first clamping member 50 to move toward the direction close to the second clamping member 52 to clamp the shaping portion 36 and separate the shaping portion 36 from the placing plate 35.

[0044] In specific implementation, the moving mechanism moves, so that the placement plate 35 moves from the supporting position to the separation position, the placement plate 35 is separated from the fixed cylinder 21, and the fixed cylinder 21 moves toward the center of the winding mechanism 2 after no support from the placement plate 35, and the fixed cylinder 21 is separated from the battery cell; at the same time, after the fixed cylinder 21 is separated from the battery cell, it drives the winding mechanism 2 to move from the winding position to the avoidance position. In addition, in the process of the placement plate 35 moving from the supporting position to the separation position, the moving mechanism drives the first clamping member 50 to move toward the direction close to the second clamping member 52, so as to clamp the shaping part 36 and separate the shaping part 36 from the placement plate 35, so as to ensure that the shaping part 36 on the placement plate 35 can be located in the formed battery cell, and avoid moving together with the movement of the placement plate 35, so that the shaping part 36 can support the battery cell.

[0045] Specifically, Figure 5 As shown, a gasket 53 is fixedly connected to the first clamping member 50 and the second clamping member 52, and the first clamping member 50 and the second clamping member 52 are both L-shaped. When working, the gasket 53 is made of rubber material to increase friction and better clamp and fix the shaping portion 36, while also preventing the surface of the shaping portion 36 from being deformed due to excessive squeezing of the first clamping member 50 and the second clamping member 52.

[0046] In this embodiment, the battery cell winding device also includes: a first driving component, which is driven and connected to the moving mechanism and the fixed cylinder 21, so that the moving mechanism and the winding mechanism 2 move toward or away from each other, so that the placement plate 35 moves between the supporting position and the separation position, and the winding mechanism 2 moves between the winding position and the avoidance position.

[0047] In specific implementation, after completing the winding of the battery cell, the first driving component drives the moving mechanism and the winding mechanism to move in opposite directions, so that the placement plate 35 moves from the supporting position to the separation position, and the winding mechanism 2 moves from the winding position to the avoidance position; after the extrusion mechanism extrudes the battery cell, the first driving component drives the moving mechanism and the winding mechanism to move toward each other, so that the placement plate 35 moves from the separation position to the supporting position, and the winding mechanism 2 moves from the avoidance position to the winding position, so as to carry out the winding and extrusion molding of the next battery cell.

[0048] In this embodiment, if Figure 3As shown, the fixed cylinder 21 includes two fixed half cylinders 211, and a second adjustment gap 210 is formed between the two fixed half cylinders 211. The two fixed half cylinders 211 are both provided with abutment blocks 27, a fixing frame 25 and an adjustment assembly. The abutment blocks 27 are arranged on the inner wall of the fixed half cylinder 211. When the placement plate 35 is in the supporting position, the abutment blocks 27 on the two fixed half cylinders 211 are located on the opposite sides of the placement plate 35 and are both abutted against the placement plate 35. The fixing frame 25 is provided with a through hole 26 for penetrating the abutment blocks 27. The adjustment assembly includes a first slider 22 and a first elastic member 23. The first slider 22 is fixedly connected to the fixed half cylinder 211. The fixing frame 25 is provided with a first slide groove 24 for accommodating the first slider 22 and the first elastic member 23. One end of the first elastic member 23 is connected to the first slider 22, and the other end of the first elastic member 23 is connected to the inner wall of the first slide groove 24. Optionally, the first elastic member 23 is a spring.

[0049] In specific implementation, a second adjustment gap 210 is set between the two fixed half-cylinders 211 to enable the fixed cylinder 21 to move in a direction away from or close to the center of the winding mechanism 2; and, through the setting of the abutment block 27, the fixed frame 25, the first slider 22 and the first elastic member 23, when the winding cylinder 20 and the placement plate 35 move in opposite directions, the front and rear sides of the placement plate 35 will no longer abut against the abutment block 27. Since there is no support from the placement plate 35, under the action of the first elastic member 23, the fixed cylinder 21 will move inward, thereby driving the winding cylinder 20 to move together. At this time, the outer side of the winding cylinder 20 no longer maintains contact with the battery cell, so that the winding cylinder 20 can be smoothly separated from the battery cell.

[0050] In this embodiment, if Figure 2 and 4 As shown, the first driving assembly includes: a first driving member 33, which is arranged on the workbench 1; a first rotating rod 32, the first driving member 33 is drivingly connected to the first rotating rod 32 to drive the first rotating rod 32 to rotate; the first rotating rod 32 has a first threaded portion and a second threaded portion, and the thread rotation directions of the first threaded portion and the second threaded portion are opposite; two moving blocks 31, one moving block 31 is threadedly connected to the first threaded portion and fixedly connected to the fixed cylinder 21, and the other moving block 31 is threadedly connected to the second threaded portion and connected to the placement plate 35, so that the two moving blocks 31 move toward or away from each other.

[0051] In specific implementation, the battery cell winding device can make the two moving blocks 31 move toward or away from each other by setting the first threaded portion and the second threaded portion with opposite thread rotation directions on the first rotating rod 32, thereby making the moving mechanism and the winding mechanism move toward or away from each other, so that the winding drum 20 and the placement plate 35 can be separated from the formed battery cell.

[0052] Optionally, the first driving member 33 is a motor.

[0053] Specifically, the first rotating rod 32 is arranged in the accommodating cavity of the workbench 1, and a through slot 34 communicating with the accommodating cavity is arranged on the workbench 1, and the two moving blocks 31 pass through the through slot 34 and are respectively connected with the placement plate 35 and the fixing cylinder 21. Such a setting can shield the transmission structure to prevent the staff from being accidentally touched and injured, and can also protect the transmission structure to prevent the failure of the threaded transmission.

[0054] Specifically, Figure 4 As shown, a pad 59 is fixedly connected to one side of the inner wall of the through slot 34, and the pad 59 is in contact with the moving block 31; when working, the pad 59 is fixed on one side of the inner wall of the through slot 34, and is used to buffer between one side of the moving block 31 and the inner wall of the through slot 34 to avoid abutment between the moving block 31 and the through slot 34, thereby preventing wear.

[0055] In this embodiment, if Figure 2 As shown, the moving mechanism also includes a first connecting member 310 and a second connecting member 42. The first connecting member 310 is fixedly connected to the placement plate 35, the first connecting member 310 is movably connected to the second connecting member 42, and the second connecting member 42 is fixedly connected to the moving block 31; the first connecting member 310 is used to drive the first clamping member 50 to move, and in the process of the placement plate 35 moving from the supporting position to the separation position, the first connecting member 310 moves relative to the second connecting member 42 to drive the first clamping member 50 to move in the direction close to the second clamping member 52.

[0056] In specific implementation, by setting the first connecting member 310 and the second connecting member 42, the first clamping member 50 can be linked when the placement plate 35 moves from the supporting position to the separated position, so that the first clamping member 50 moves in a direction close to the second clamping member 52 to clamp the shaping portion 36.

[0057] Specifically, Figure 8 As shown, the moving mechanism also includes a reinforcing portion 38 , one end of the reinforcing portion 38 is connected to the first connecting member 310 , and the other end of the reinforcing portion 38 is connected to the placement plate 35 , so that the reinforcing portion 38 strengthens the strength of the placement plate 35 and the first connecting member 310 .

[0058] In this embodiment, if Figure 8As shown, the first connecting member 310 includes a connecting block 39 and a fixed column 40, the connecting block 39 is sleeved on the second connecting member 42 and is movably arranged relative to the second connecting member 42 in the vertical direction; the first clamping member 50 is movably inserted in the moving groove 54 of the second clamping member 52 in the vertical direction, and the second clamping member 52 is provided with a connecting groove 51, and the connecting groove 51 is connected to the moving groove 54; the clamping mechanism also includes: an insertion rod 47, which is movably arranged on the workbench 1 in the vertical direction; a moving member 48, which is fixedly connected to the insertion rod 47, and the moving member 48 is fixedly connected to the first clamping member 50 through the moving groove 54; a second elastic member 49, which is sleeved on the insertion rod 47, and the moving member 48 is fixedly connected to the first clamping member 50 through the moving groove 54; On the rod 47, one end of the second elastic member 49 is connected to the workbench 1, and the other end of the second elastic member 49 is connected to the moving member 48; the fixed plate 46 is arranged on the workbench 1, and a guide groove 45 is arranged on the fixed plate 46, and the guide groove 45 includes an inclined groove and a horizontal groove, one end of the inclined groove is connected to the horizontal groove, and the other end of the inclined groove extends toward the direction close to the winding mechanism 2 and is arranged higher than one end of the inclined groove, and the fixed column 40 is slidably arranged in the guide groove 45, so that when the placement plate 35 moves from the supporting position to the separation position, the fixed column 40 is pressed on the moving member 48, so that the moving member 48 and the first clamping member 50 move downward in the vertical direction. Among them, the second elastic member 49 is a spring; the connecting block 39 is welded and fixed to the placement plate 35, and the connecting block 39 is designed in an L shape, and the bottom end of the connecting block 39 is inserted into the second connecting member 42.

[0059] Alternatively, if Figure 6 As shown, the moving mechanism further includes a third elastic member 44, which is sleeved on the second connecting member 42 and located between the first connecting member 310 and the second connecting member 42. One end of the third elastic member 44 is connected to the first connecting member 310, and the other end of the third elastic member 44 is connected to the second connecting member 42. In a specific implementation, the elastic force of the third elastic member 44 can ensure that the first connecting member 310 and the second connecting member 42 are reset to complete the next action. The third elastic member 44 is a spring.

[0060] In specific implementation, when the placement plate 35 and the fixing cylinder 21 move in opposite directions, the placement plate 35 will drive the shaping portion 36 to move synchronously for a short distance, and the fixing column 40 will slide in the guide groove 45, and guided by the guide groove 45, the fixing column 40 will move downward for a distance while moving. Since the bottom end of the connecting block 39 is connected to the top end of the second connecting member 42 through the third elastic member 44, the connecting block 39 will move downward to ensure that the placement plate 35 will not move during the movement. The top part of the second clamping member 52 abuts against the fixed column 40. When the fixed column 40 moves in the guide groove 45, the bottom end of the fixed column 40 abuts against the movable member 48 and pushes the movable member 48 to move downward. The second elastic member 49 fixed on the bottom end of the movable member 48 will also be compressed. One side of the movable member 48 is connected to the first clamping member 50, so that the first clamping member 50 can be driven to move in the movable groove 54 synchronously. The right side of the molding portion 36 can be clamped and fixed by the first clamping member 50 and the second clamping member 52.

[0061] Alternatively, if Figure 6 As shown, a clamping block 43 is provided on the first connecting member 310, and a clamping slot 41 is provided on the second connecting member 42. The clamping slot 41 extends in the vertical direction, and the clamping block 43 is movably provided along the extending direction of the clamping slot 41. The clamping block 43 and the clamping slot 41 play a guiding and limiting role when the first connecting member 310 and the second connecting member 42 move relative to each other, thereby ensuring the reliability of movement.

[0062] Optionally, there are two fixing columns 40, which are arranged on opposite sides of the connecting block 39; there are two clamping mechanisms, which are arranged one-to-one with the two fixing columns 40, and each fixing column 40 is inserted into a guide groove 45 of the corresponding clamping mechanism and pressed on a corresponding moving member 48. Such an arrangement can reliably clamp the forming portion 36.

[0063] Optionally, three groups of insertion rods 47 and second elastic members 49 are provided on the movable member 48, and the three groups of insertion rods 47 and second elastic members 49 are arranged at intervals. Such an arrangement ensures that the movable member 48 will not deflect during movement, and can ensure that the first clamping member 50 and the second clamping member 52 clamp the shaping portion 36.

[0064] In this embodiment, if Figure 7 As shown, the extrusion mechanism includes: two extrusion plates 55; a second driving assembly, including a second driving member 56 and a second rotating rod 57, the second driving member 56 is arranged on the workbench 1, and the second driving member 56 is drivingly connected to the second rotating rod 57 to drive the second rotating rod 57 to rotate; the second rotating rod 57 has a third threaded portion and a fourth threaded portion, and the thread directions of the third threaded portion and the fourth threaded portion are opposite, and the two extrusion plates 55 are threadedly connected to the third threaded portion and the fourth threaded portion respectively, so that the two extrusion plates 55 move toward or away from each other.

[0065] In a specific implementation, the third threaded portion and the fourth threaded portion on the second rotating rod 57 are arranged to drive the two pressing plates 55 to move toward or away from each other to press the battery cell.

[0066] Alternatively, if Figure 7 As shown, the second driving assembly includes a plurality of second rotating rods 57 and a plurality of second driving members 56. The plurality of second driving members 56 are arranged one by one with the plurality of second rotating rods 57, and each second driving member 56 drives the corresponding second rotating rod 57 to rotate. The second driving member 56 is a motor. Such an arrangement can provide sufficient clamping force for the two extrusion plates 55.

[0067] In specific implementation, after the winding drum 20 and the placement plate 35 are separated from the formed battery cell, the multiple second driving members 56 are started to rotate synchronously, and the two groups of extrusion plates 55 threadedly connected to the second driving members 56 will move toward each other until the multiple second driving members 56 flatten the formed battery cell. Since the shaping portion 36 is inside the battery cell, it can provide support to the innermost side of the battery cell during the extrusion process and play a shaping role.

[0068] In this embodiment, a groove 58 is provided on the workbench 1, and the groove 58 is used to accommodate one of the two extrusion plates 55 in a lower position; the second driving member 56 is arranged in the accommodating cavity of the workbench 1, and the second rotating rod 57 passes through the table surface of the workbench 1 and is connected to the two extrusion plates 55. The extrusion plate 55 can be accommodated in the groove 58, and can avoid other parts when it is not working. The second driving member 56 is arranged in the accommodating cavity of the workbench 1, which plays a protective role for the second driving member 56.

[0069] In this embodiment, if Figure 7 and 10 As shown, the battery cell winding device also includes: a knife holder 74, which is arranged on the support frame 73; a cutter 71, which is arranged on the higher extrusion plate 55 of the two extrusion plates 55, so that the extrusion plate 55 drives the cutter 71 to move toward the knife holder 74 to cut off the pole piece and the isolation membrane between the knife holder 74 and the cutter 71.

[0070] In specific implementation, when the wound battery cell is to be extruded, the cutter 71 fixed on the top extrusion plate 55 can cut the raw material on the feed roller 72 while extruding. A knife holder 74 is fixed on the feed roller 72, and the knife holder 74 can provide support for the cutter 71.

[0071] In this embodiment, if Fig. 9As shown, the battery cell winding device further includes: a support plate 62 fixedly connected to the fixing drum 21; a third driving member 64 disposed on the support plate 62; a roller 63, the third driving member 64 drivingly connected to the roller 63 to drive the roller 63 to rotate; the roller 63 abuts against the winding drum 20, so that the roller 63 drives the winding drum 20 to rotate. Such a configuration enables the winding drum 20 to rotate automatically.

[0072] Optionally, the third driving member 64 is a motor.

[0073] Specifically, Figure 2 As shown, the winding drum 20 includes two winding half drums 212, and a first adjustment gap 213 is provided between the two winding half drums 212. The first adjustment gap 213 can not only allow the pole piece and the isolation film to pass through, but also ensure that the winding drum 20 has a certain range of movement.

[0074] Specifically, Figure 3 As shown, the inner wall of the winding drum 20 is provided with a second slide groove 29 extending along the circumferential direction thereof, and the fixed drum 21 is provided with a second slider 28 extending along the circumferential direction thereof, and the second slider 28 is slidably arranged in the second slide groove 29. Such an arrangement can limit and guide the rotation of the winding drum 20.

[0075] Alternatively, if Figure 3 As shown, the winding mechanism is provided with a plurality of groups of second sliders 28 and second slide grooves 29, and the plurality of groups of second sliders 28 and second slide grooves 29 are arranged at intervals along the axial direction of the winding mechanism; the second sliders 28 and the second slide grooves 29 are both T-shaped; when working, the second slider 28 is fixed to the outside of the fixed cylinder 21, and the second slider 28 and the second slide groove 29 are both T-shaped to ensure that the winding cylinder 20 can rotate normally on the fixed cylinder 21.

[0076] Specifically, Figure 4 and 9 As shown, the workbench 1 is provided with a third slide groove 60, and the bottom of the support plate 62 is provided with a third slider 61 adapted to the third slide groove 60, and the third slider 61 is slidably arranged in the third slide groove 60. Such a setting can limit and guide the moving track of the support plate 62, so that the support plate 62 can move more stably and reduce shaking during the movement.

[0077] When implementing it, Fig.11As shown, the working principle of the battery cell winding device of the present invention is that, through the structural design of the moving mechanism, when the first driving member 33 drives the first rotating rod 32 to rotate, the two moving blocks 31 can move in opposite directions, thereby driving the winding drum 20 and the placement plate 35 to move away from each other, so that the winding drum 20 and the placement plate 35 can be separated from the formed battery cell, and the bottom end of the winding drum 20 is in contact with the roller 63. After the isolation film and the positive and negative electrode sheets are wound on the winding drum 20, the third driving member 64 drives the roller 63 to rotate, which can drive the winding drum 20 to rotate, so that the winding drum 20 can continuously wind the isolation film and the positive and negative electrode sheets. After the battery cell on the winding drum 20 is wound and formed, the bottom end of the battery cell will contact the workbench 1 to support the battery cell. At this time, the first driving member 33 drives the first rotating rod 32 inside the workbench 1 to rotate, and the moving blocks 31 threadedly connected to the left and right sides of the first rotating rod 32 will move in opposite directions, thereby driving the connecting frame 30 and the second connecting member 42 connected to the moving block 31 to move. The connecting frame 30 will drive the fixed drum 21 connected thereto to move to the left, and the second connecting member 42 will drive the placement plate 35 to move to the right, so that the winding drum 20 and the placement plate 35 can be separated from the formed battery cell.

[0078] When the winding drum 20 and the placement plate 35 move in opposite directions, the front and rear sides of the placement plate 35 will no longer abut against the abutment block 27. Without the support of the placement plate 35, the fixed drum 21 will move inward under the action of the first elastic member 23, thereby driving the winding drum 20 to move together. At this time, the outer side of the winding drum 20 will no longer keep contact with the battery cell, so that the winding drum 20 can be smoothly separated from the battery cell. When the moving block 31 does not move, the placement plate 35 will be inside the fixed drum 21, and the front and rear sides of the placement plate 35 will keep contact with one side of the fixing frame 25. The abutment block 27 passes through the through hole 26 to abut against the placement plate 35. At this time, the abutment block 27 can be connected to the placement plate 35 is abutted to support the fixed cylinder 21, so that the winding cylinder 20 rotatably connected to the fixed cylinder 21 can be normally wound with the positive and negative electrode materials. After the battery cell on the winding cylinder 20 is wound and formed, when the placement plate 35 moves, the abutment block 27 will be inserted into the through hole 26 under the action of the first elastic member 23 because there is no support from the placement plate 35. A fourth slide groove 65 is opened on the front and rear sides of the placement plate 35. The fourth slide groove 65 is used to ensure that the abutment block 27 will not abut against the placement plate 35. At this time, the abutment block 27 will drive the fixed cylinder 21 to move inward, so that the winding cylinder 20 is separated from the battery cell to ensure that the winding cylinder 20 can be smoothly separated from the battery cell.

[0079] Through the structural design of the clamping mechanism, when the winding drum 20 and the placement plate 35 move away from each other, the first clamping member 50 and the second clamping member 52 can approach each other and clamp and fix the right side of the shaping portion 36, ensuring that the shaping portion 36 on the placement groove 37 can be located in the formed battery cell to avoid moving together with the movement of the placement plate 35. When the placement plate 35 moves to the right, the placement plate 35 will drive the shaping portion 36 to move a short distance to the right synchronously, and the fixing column 40 fixed on the connecting block 39 will slide in the guide groove 45, and through the guidance of the guide groove 45, the fixing column 40 will move downward for a distance while moving to the right. Since the bottom end of the connecting block 39 is connected to the top end of the second connecting member 42 through the third elastic member 44, the connecting block 39 When the fixing column 40 moves in the guide groove 45, the bottom end of the fixing column 40 will contact with the moving member 48 and push the moving member 48 to move downward, and the second elastic member 49 fixed on the bottom end of the moving member 48 will also be compressed. One side of the moving member 48 is connected with the first clamping member 50, so that the first clamping member 50 can be driven to move in the moving groove 54 synchronously, and the right side of the shaping part 36 can be clamped and fixed by the first clamping member 50 and the second clamping member 52. At this time, the shaping part 36 will not move with the movement of the placing plate 35, ensuring that the shaping part 36 can be located in the formed battery cell, and finally the shaping part 36 can be manually pulled out from the battery cell.

[0080] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0081] The battery cell winding device of the present invention includes a workbench 1, a winding mechanism 2, an extrusion mechanism, a support frame 73, a plurality of raw material rollers 70, a feed roller assembly and a shaping portion 36, wherein the plurality of raw material rollers 70 and the feed roller assembly are all arranged on the support frame 73, and the plurality of raw material rollers 70 are used to support the winding of pole pieces and isolation membranes, and the pole pieces and isolation membranes on the plurality of raw material rollers 70 are transported to the winding mechanism 2 located at the winding position by two feed rollers 72 through a feeding gap; wherein the pole pieces and isolation membranes are wound on the fixed drum 21 through a first adjustment gap 213 of the winding drum 20, and the winding drum 20 is sleeved on the fixed drum 21 and is rotatably connected to the fixed drum 21, so that the pole pieces and isolation membranes form a battery cell on the fixed drum 21 through rotation. After the battery cell is wound, the fixed cylinder 21 moves toward the center of the winding mechanism 2 under the action of the second adjustment gap 210, so that the fixed cylinder 21 is separated from the battery cell; after the fixed cylinder 21 is separated from the battery cell, the winding mechanism 2 is driven by the fixed cylinder 21 to move to the avoidance position; at the same time, the battery cell separated from the fixed cylinder 21 is supported by the shaping part 36. Finally, the extrusion mechanism extrude the battery cell on the shaping part 36 to complete the extrusion molding. It can be seen that the battery cell winding device completes the winding and extrusion of the battery cell through the setting of the above structure, simplifies the processing process, and solves the problem that the processing process of the battery cell winding device in the prior art is relatively cumbersome. During the extrusion molding, the shaping part 36 plays a role in supporting the battery cell, avoiding the folding or dislocation of the pole piece and the isolation membrane, and improving the quality of the battery cell.

[0082] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0083] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery cell winding device, comprising a workbench (1), a winding mechanism (2) for winding a battery cell, and a pressing mechanism for pressing the battery cell, characterized in that: The extrusion mechanism and the winding mechanism (2) are both arranged on the workbench (1); the battery cell winding device further comprises: A support frame (73) is arranged on one side of the extrusion mechanism; A plurality of raw material rollers (70) are arranged on the support frame (73), and each of the raw material rollers (70) is used to support the winding of the pole piece or the isolation film; a feed roller assembly, arranged on the support frame (73) and located on a side of the plurality of raw material rollers (70) close to the extrusion mechanism, the feed roller assembly comprising two feed rollers (72), a feed gap being provided between the two feed rollers (72), so that the pole pieces and the isolation membranes on the plurality of raw material rollers (70) are transported to the winding mechanism (2) by the two feed rollers (72) through the feed gap; The winding mechanism (2) comprises a winding drum (20) and a fixed drum (21); the winding drum (20) has a first adjustment gap (213); the winding drum (20) is sleeved on the fixed drum (21) and is rotatably connected to the fixed drum (21), so that the pole piece and the isolation membrane are wound on the fixed drum (21) through the first adjustment gap (213) to form the battery core; the fixed drum (21) has a second adjustment gap (210) which is movably arranged in the radial direction of the winding mechanism (2), so that when the fixed drum (21) moves in a direction away from the center of the winding mechanism (2), the fixed drum (21) can be moved. The fixed cylinder (21) winds and supports the battery core, and when the fixed cylinder (21) moves in a direction close to the center of the winding mechanism (2), the fixed cylinder (21) is separated from the battery core; the winding mechanism (2) has a winding position located inside the squeezing mechanism and an escape position located outside the squeezing mechanism, and the fixed cylinder (21) is movably arranged on the workbench (1) so that the winding mechanism (2) moves between the winding position and the escape position, so that after the fixed cylinder (21) is separated from the battery core, the fixed cylinder (21) drives the winding mechanism (2) to move from the winding position to the escape position; a shaping portion (36) disposed on the workbench (1), the shaping portion (36) being used to support the battery core after the battery core is separated from the fixing cylinder (21), so that the squeezing mechanism squeezes the battery core on the shaping portion (36); A moving mechanism is movably arranged on the workbench (1), the moving mechanism comprising a placement plate (35), the placement plate (35) having a supporting position located in the fixed cylinder (21) to prop up the fixed cylinder (21) and a separation position separated from the fixed cylinder (21), the placement plate (35) being movably arranged between the supporting position and the separation position, and in the process of the placement plate (35) moving from the supporting position to the separation position, the fixed cylinder (21) moves in a direction close to the center of the winding mechanism (2), and the second adjustment gap (210) is reduced; wherein the placement plate (35) has a placement groove (37) for placing the shaping portion (36); The clamping mechanism comprises a first clamping member (50) and a second clamping member (52), wherein when the placement plate (35) moves from the supporting position to the separation position, the moving mechanism drives the first clamping member (50) to move in a direction close to the second clamping member (52), so as to clamp the shaping portion (36) and separate the shaping portion (36) from the placement plate (35).

2. The battery core winding device according to claim 1, characterized in that: The battery core winding device also includes: A first driving assembly is drivably connected to the moving mechanism and to the fixed cylinder (21), so that the moving mechanism and the winding mechanism (2) move toward or away from each other, so that the placement plate (35) moves between the supporting position and the separation position, and the winding mechanism (2) moves between the winding position and the avoidance position.

3. The battery core winding device according to claim 1, characterized in that: The fixed cylinder (21) comprises two fixed half cylinders (211), the second adjustment gap (210) is provided between the two fixed half cylinders (211), and the two fixed half cylinders (211) are each provided with an abutment block (27), a fixing frame (25) and an adjustment assembly; The abutment blocks (27) are arranged on the inner wall of the fixed half-cylinder (211); when the placement plate (35) is in the supporting position, the abutment blocks (27) on the two fixed half-cylinders (211) are located on opposite sides of the placement plate (35) and are both abutted against the placement plate (35); The fixing frame (25) is provided with a through hole (26) for passing the abutment block (27); The adjustment assembly comprises a first slider (22) and a first elastic member (23); the first slider (22) is fixedly connected to the fixed half cylinder (211); a first slide groove (24) for accommodating the first slider (22) and the first elastic member (23) is provided on the fixed frame (25); one end of the first elastic member (23) is connected to the first slider (22); and the other end of the first elastic member (23) is connected to the inner wall of the first slide groove (24).

4. The battery cell winding device according to claim 2, characterized in that: The first driving assembly comprises: A first driving member (33) is arranged on the workbench (1); a first rotating rod (32), wherein the first driving member (33) is drivingly connected to the first rotating rod (32) to drive the first rotating rod (32) to rotate; the first rotating rod (32) comprises a first threaded portion and a second threaded portion, and the threaded directions of the first threaded portion and the second threaded portion are opposite; Two moving blocks (31), one of the moving blocks (31) is threadedly connected to the first threaded portion and fixedly connected to the fixed cylinder (21), and the other of the moving blocks (31) is threadedly connected to the second threaded portion and connected to the placement plate (35), so that the two moving blocks (31) can move towards or away from each other.

5. The battery cell winding device according to claim 4, characterized in that: The moving mechanism further comprises a first connecting member (310) and a second connecting member (42), wherein the first connecting member (310) is fixedly connected to the placement plate (35), the first connecting member (310) is movably connected to the second connecting member (42), and the second connecting member (42) is fixedly connected to the moving block (31); The first connecting member (310) is used to drive the first clamping member (50) to move. When the placement plate (35) moves from the supporting position to the separation position, the first connecting member (310) moves relative to the second connecting member (42) to drive the first clamping member (50) to move in a direction close to the second clamping member (52).

6. The battery cell winding device according to claim 5, characterized in that: The first connecting member (310) comprises a connecting block (39) and a fixing column (40); the connecting block (39) is sleeved on the second connecting member (42) and is movably arranged in a vertical direction relative to the second connecting member (42); The first clamping member (50) is inserted into the movable groove (54) of the second clamping member (52) in a movably manner in a vertical direction; the second clamping member (52) is provided with a connecting groove (51), and the connecting groove (51) is communicated with the movable groove (54); the clamping mechanism further comprises: An insertion rod (47) movably arranged on the workbench (1) along a vertical direction; A moving member (48) fixedly connected to the insertion rod (47), the moving member (48) being fixedly connected to the first clamping member (50) via the moving groove (54); a second elastic member (49) sleeved on the insertion rod (47), one end of the second elastic member (49) being connected to the workbench (1), and the other end of the second elastic member (49) being connected to the moving member (48); a fixed plate (46) disposed on the workbench (1), the fixed plate (46) being provided with a guide groove (45), the guide groove (45) comprising an oblique groove and a horizontal groove, one end of the oblique groove being connected to the horizontal groove, the other end of the oblique groove extending in a direction close to the winding mechanism (2) and being arranged higher than one end of the oblique groove, the fixed column (40) being slidably arranged in the guide groove (45), so that when the placement plate (35) moves from the supporting position to the separation position, the fixed column (40) is pressed on the moving member (48), so that the moving member (48) and the first clamping member (50) move downward in the vertical direction; and / or The moving mechanism further comprises a third elastic member (44), the third elastic member (44) being sleeved on the second connecting member (42) and being located between the first connecting member (310) and the second connecting member (42), one end of the third elastic member (44) being connected to the first connecting member (310), and the other end of the third elastic member (44) being connected to the second connecting member (42); and / or The first connecting member (310) is provided with a clamping block (43), the second connecting member (42) is provided with a clamping slot (41), the clamping slot (41) extends in a vertical direction, and the clamping block (43) is movably arranged along the extension direction of the clamping slot (41).

7. The battery cell winding device according to claim 1, characterized in that: The extrusion mechanism comprises: two extrusion plates (55); The second driving assembly comprises a second driving member (56) and a second rotating rod (57), wherein the second driving member (56) is disposed on the workbench (1), and the second driving member (56) is drivingly connected to the second rotating rod (57) so as to drive the second rotating rod (57) to rotate; the second rotating rod (57) has a third threaded portion and a fourth threaded portion, wherein the thread directions of the third threaded portion and the fourth threaded portion are opposite, and the two extrusion plates (55) are respectively threadedly connected to the third threaded portion and the fourth threaded portion so as to enable the two extrusion plates (55) to move toward or away from each other.

8. The battery cell winding device according to claim 7, characterized in that: The workbench (1) is provided with a groove (58), the groove (58) being used to accommodate one of the two extrusion plates (55) in a lower position; the second driving member (56) is arranged in an accommodating cavity of the workbench (1), and the second rotating rod (57) passes through the table surface of the workbench (1) and is connected to the two extrusion plates (55); and / or The battery core winding device also includes: A tool holder (74), arranged on the support frame (73); The cutter (71) is arranged on the extrusion plate (55) located at a higher position among the two extrusion plates (55), so that the extrusion plate (55) drives the cutter (71) to move toward the knife holder (74) to cut off the pole piece and the isolation membrane between the knife holder (74) and the cutter (71).

9. The battery core winding device according to claim 1, characterized in that: The battery core winding device also includes: A support plate (62) fixedly connected to the fixing cylinder (21); A third driving member (64) is disposed on the support plate (62); The roller (63) is connected to the third driving member (64) so ​​as to drive the roller (63) to rotate; the roller (63) is in contact with the winding drum (20) so that the roller (63) drives the winding drum (20) to rotate; and / or The winding drum (20) comprises two winding half drums (212), and the first adjustment gap (213) is provided between the two winding half drums (212); and / or A second slide groove (29) extending in a circumferential direction is provided on the inner wall of the winding drum (20), and a second slider (28) extending in a circumferential direction is provided on the fixed drum (21). The second slider (28) is slidably disposed in the second slide groove (29).

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