Pole piece feeding deviation rectifying device and lithium battery cell winding equipment

Abstract

The utility model relates to the technical field of lithium battery processing equipment, in particular to a pole piece feeding deviation rectifying device and lithium battery cell winding equipment. The utility model provides a pole piece feeding deviation rectifying device. The pole piece feeding deviation rectifying device comprises a deviation rectifying pinch roll module, a diaphragm guide module and a movable driving module, the diaphragm guiding module and the moving driving module are both connected to the deviation rectifying clamping roller module, the deviation rectifying clamping roller module is used for conveying a pole piece to the winding needle, and the diaphragm guiding module is used for guiding and conveying a diaphragm to the winding needle; and the movable driving module is used for driving the deviation rectifying pinch roll module to get close to or away from the winding needle. The diaphragm guiding module, the deviation rectifying clamping roller module and the movable driving module are integrated together, the integration degree is improved, the occupied space is saved, the reliability during winding of a pole piece and a diaphragm is improved, the movable driving module can change the distance between the deviation rectifying clamping roller module and a winding needle by driving the deviation rectifying clamping roller module to move, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery processing equipment, in particular to a pole piece feeding correction device and a lithium battery cell winding device. Background Art

[0002] As a new type of secondary battery, lithium-ion battery has the advantages of high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and green environmental protection. It has broad application prospects in portable appliances, power tools, large-scale energy storage, electric transportation power supply, etc.

[0003] The key technology for lithium battery core manufacturing is winding, and the key quality control points of wound bare cells are the edge alignment of the anode and cathode pole pieces and the position alignment of the rolling heads of the anode and cathode pole pieces. In order to ensure the edge alignment of the anode and cathode pole pieces, a multi-level alignment detection and correction closed-loop control system is equipped in the bare cell winding process, from the unwinding of the anode and cathode pole pieces to the final winding process; in order to ensure the position alignment of the rolling heads of the anode and cathode pole pieces, an active sheet feeding and correction mechanism is equipped. Through the coordinated use of this series of detection and execution components, the bare cells output through the winding process meet the alignment requirements and have a very high product yield.

[0004] In the existing winding machine feeding technology, on the one hand, due to the limited space of the mechanism and the need to avoid the bare battery cells that have been wound on the winding needle, the feeding correction mechanism cannot get closer to the winding needle, resulting in the tangent distance between the correction feeding active roller and the winding needle being too long, resulting in the pole pieces with this tangent distance length being unable to achieve position detection and correction control during the winding process, increasing the NG risk for the alignment of the finished bare battery cells; on the other hand, in the current technology, the feeding correction mechanism is mostly installed in a fixed position, and the relative position of the feeding correction mechanism and the winding mechanism is fixed, resulting in the maximum battery cell that the winding mechanism can be compatible with being limited. If the largest battery cell is to be compatible, the tangent distance between the correction feeding active roller and the winding needle will be too long when winding the smallest battery cell, and the alignment will be difficult to effectively control. Utility Model Content

[0005] The utility model aims to provide a pole piece feeding correction device and a lithium battery cell winding device to solve the technical problems of the existing winding machine feeding technology, such as poor correction effect of the feeding correction mechanism, NG risk, poor cell compatibility and affecting production quality.

[0006] The utility model provides a pole piece feeding deviation correction device, comprising: a deviation correction clamping roller module, a diaphragm guide module and a mobile drive module;

[0007] The diaphragm guide module and the mobile drive module are both connected to the deviation correction clamping roller module, and the deviation correction clamping roller module is used to convey the pole piece to the winding needle, and the diaphragm guide module is used to convey the diaphragm to the winding needle guide;

[0008] The mobile driving module is used to drive the deviation-correcting clamping roller module to approach or move away from the winding needle.

[0009] As a further technical solution, the deviation-correcting clamping roller module comprises a connecting seat, a clamping roller mechanism and a deviation-correcting driving mechanism;

[0010] The mobile driving module, the diaphragm guiding module, the clamping roller mechanism and the deviation correcting driving mechanism are all connected to the connecting seat, and the diaphragm guiding module and the clamping roller mechanism are both located on one side of the connecting seat, and the deviation correcting driving mechanism is located on the other side of the connecting seat;

[0011] The mobile driving module is used to drive the connecting seat to approach or move away from the winding needle, and the deviation correction driving mechanism is used to drive the clamping roller mechanism to reciprocate relative to the connecting seat to correct the deviation of the pole piece.

[0012] As a further technical solution, the clamping roller mechanism includes a mounting seat, a pressure roller assembly, a driving roller assembly and a driving assembly;

[0013] The mounting seat is slidably connected to the connecting seat, and the pressure roller assembly, the driving roller assembly and the driving assembly are all arranged on the mounting seat;

[0014] A pole piece driving gap is provided between the pressure roller assembly and the driving roller assembly, and the driving assembly is used to drive the driving roller assembly to rotate.

[0015] As a further technical solution, the clamping roller mechanism further includes a pressing plate;

[0016] A mounting cavity and a pair of clamping grooves are provided on one side of the mounting seat, the pressing roller assembly is provided in the mounting cavity, and two ends of the pressing roller assembly are respectively clamped in the clamping grooves;

[0017] The pressing plate is rotatably connected to the mounting seat and is located at the notch of the card slot. The pressing plate can open or close the notch of the card slot by rotating.

[0018] As a further technical solution, the mounting seat and the connecting seat are slidably connected via a first slide rail, the driving end of the correcting drive mechanism is connected to the mounting seat, and the driving direction of the correcting drive mechanism and the extension direction of the first slide rail are both parallel to the width direction of the pole piece.

[0019] As a further technical solution, the mounting base includes a first base body and a second base body, and the second base body is arranged on one side of the first base body;

[0020] The driving roller assembly is installed on the first seat body, and the pressing roller assembly is installed on the second seat body. The second seat body can be driven to approach or move away from the first seat body.

[0021] As a further technical solution, the second seat body is slidably connected to the first seat body through a second slide rail. A driving member is provided on the first seat body. The driving direction of the driving member and the extension direction of the second slide rail are parallel to the thickness direction of the pole piece. The driving end of the driving member is connected to the second seat body to drive the pressure roller assembly to approach or move away from the driving roller assembly to clamp or release the pole piece.

[0022] As a further technical solution, the driving roller assembly and the pressure roller assembly have the same structure and size.

[0023] As a further technical solution, the diaphragm guide module includes an upper diaphragm roller and a driver, and the driver drives the upper diaphragm roller to move along the pole piece and thickness direction.

[0024] The utility model provides a lithium battery core winding device, which comprises the pole piece feeding deviation correction device.

[0025] Compared with the prior art, the pole piece feeding correction device and lithium battery cell winding equipment provided by the utility model have the following technical advantages:

[0026] The utility model provides a pole piece feeding correction device, comprising: a correction clamping roller module, a diaphragm guide module and a movable drive module; the diaphragm guide module and the movable drive module are both connected to the correction clamping roller module, and the correction clamping roller module is used to convey the pole piece to the winding needle, and the diaphragm guide module is used to guide the conveying of the diaphragm to the winding needle; the movable drive module is used to drive the correction clamping roller module to approach or move away from the winding needle.

[0027] The diaphragm guide module is integrated with the deflection correction roller module and the mobile drive module to improve the integration, save space, and improve the reliability of the pole piece and diaphragm winding. At the same time, the mobile drive module can change the distance between the deflection correction roller module and the winding needle by driving the deflection correction roller module to move, ensuring that the tangent distance between the deflection correction roller module and the winding needle can be controlled at the shortest distance. The relative position of the deflection correction roller module and the winding needle is variable, and the compatible battery cell blueprint size range becomes larger. Even when the largest battery cell is compatible with winding, the alignment degree is not effectively controlled due to the long tangent distance between the deflection correction roller module and the winding needle when the smallest battery cell is compatible with winding. In addition, the diaphragm guide module moves with the deflection correction roller module, with good synchronization, ensuring the reliability of the matching position of the two.

[0028] The lithium battery cell winding equipment provided by the utility model includes the above-mentioned pole piece feeding deviation correction device. Therefore, the technical advantages and effects achieved by it include the technical advantages and effects achieved by the above-mentioned pole piece feeding deviation correction device, which will not be elaborated in detail here.

[0029] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of the electrode feeding deviation correction device provided in the embodiment of the utility model;

[0032] Figure 2 A schematic diagram of the structure of one side of the clamping roller mechanism provided in an embodiment of the utility model;

[0033] Figure 3 A schematic diagram of the structure of the other side of the clamping roller mechanism provided in an embodiment of the utility model;

[0034] Figure 4 A cross-sectional view of a clamping roller mechanism provided in an embodiment of the utility model;

[0035] Figure 5 A schematic diagram of the connection structure between the mounting base and the connecting base provided in an embodiment of the utility model;

[0036] Figure 6 A schematic diagram of a lithium battery cell winding device provided in an embodiment of the utility model.

[0037] Icons: 1-mounting seat; 2-first connecting shaft; 3-pressing roller body; 4-pressing plate; 5-slot; 6-second connecting shaft; 7-first seat body; 8-second seat body; 9-groove; 10-first notch; 11-first bearing retaining ring; 12-second bearing retaining ring; 13-first bearing; 14-driving roller body; 15-adjusting seat; 16-first connecting piece; 17-second connecting piece; 18-third connecting shaft; 19-second bearing; 20-third bearing retaining ring; 21-fourth bearing retaining ring; 22-motor; 23-motor seat; 24- Connecting waist hole; 25-second notch; 26-third notch; 27-positioning pin; 28-adjusting member; 29-one-way bearing; 30-support bearing; 31-winding needle; 32-upper diaphragm roller; 33-film roller; 34-positive electrode plate; 35-negative electrode plate; 36-upper diaphragm; 37-lower diaphragm; 38-diaphragm guide module; 39-moving drive module; 40-connecting seat; 41-clamping roller mechanism; 42-correction drive mechanism; 43-driver; 44-screw; 45-first slide rail; 46-second slide rail; 47-drive member. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0043] Specific structure such as Figures 1 to 6 shown.

[0044] The present embodiment provides a pole piece feeding correction device, comprising: a correction clamping roller module, a diaphragm guide module 38 and a movable drive module 39; the diaphragm guide module 38 and the movable drive module 39 are both connected to the correction clamping roller module, and the correction clamping roller module is used to convey the pole piece to the winding needle 31, and the diaphragm guide module 38 is used to guide the conveying of the diaphragm to the winding needle 31; the movable drive module 39 is used to drive the correction clamping roller module to approach or move away from the winding needle 31.

[0045] In this embodiment, the diaphragm guide module 38 is integrated with the deflection correction clamping roller module and the mobile drive module 39 to improve the integration, save space, and improve the reliability of the pole piece and diaphragm winding. At the same time, the mobile drive module 39 can change the distance between the deflection correction clamping roller module and the winding needle 31 by driving the deflection correction clamping roller module to move, ensuring that the tangent distance between the deflection correction clamping roller module and the winding needle 31 can be controlled at the shortest distance. The relative position of the deflection correction clamping roller module and the winding needle 31 is variable, and the compatible battery cell blueprint size range becomes larger. Even when the largest battery cell is compatible with winding, it will not cause the alignment to be difficult to effectively control due to the long tangent distance between the deflection correction clamping roller module and the winding needle 31 when the smallest battery cell is compatible with winding. In addition, the diaphragm guide module 38 moves together with the deflection correction clamping roller module, with good synchronization, ensuring the reliability of the matching position of the two.

[0046] In the optional technical solution of this embodiment, the deviation correction clamping roller module includes a connecting seat 40, a clamping roller mechanism 41 and a deviation correction driving mechanism 42; the moving driving module 39, the diaphragm guiding module 38, the clamping roller mechanism 41 and the deviation correction driving mechanism 42 are all connected to the connecting seat 40, and the diaphragm guiding module 38 and the clamping roller mechanism 41 are both located on one side of the connecting seat 40, and the deviation correction driving mechanism 42 is located on the other side of the connecting seat 40; the moving driving module 39 is used to drive the connecting seat 40 to approach or move away from the winding needle 31, and the deviation correction driving mechanism 42 is used to drive the clamping roller mechanism 41 to reciprocate relative to the connecting seat 40 to correct the pole piece.

[0047] In this embodiment, the connecting seat 40 is a T-shaped seat and includes a first plate and a second plate, one end of the first plate is connected to one side of the second plate; the diaphragm guide module 38 is connected to the second plate and is located on one side of the first plate, and the diaphragm guide module 38 is fixed from the side by screws 44 to facilitate overall disassembly; the clamping roller mechanism 41 is connected to the first plate and is located on the side of the first plate facing the diaphragm guide module 38, the correction drive mechanism 42 is connected to the first plate and is located on the side of the first plate away from the diaphragm guide module 38, the clamping roller mechanism 41 and the correction drive mechanism 42 are respectively located on the opposite sides of the first plate to avoid mutual influence, and the structure is compact and convenient for debugging; the moving drive module 39 is connected to the side of the second plate away from the first plate, and the entire pole piece feeding correction device has a compact structure and occupies a small space.

[0048] In the optional technical solution of this embodiment, the clamping roller mechanism 41 includes a mounting seat 1, a pressure roller assembly, a driving roller assembly and a driving assembly; the mounting seat 1 is slidably connected to the connecting seat 40, and the pressure roller assembly, the driving roller assembly and the driving assembly are all arranged on the mounting seat 1; a pole piece driving gap is arranged between the pressure roller assembly and the driving roller assembly, and the driving assembly is used to drive the driving roller body 14 to rotate.

[0049] The mounting seat 1 and the connecting seat 40 are slidably connected via a first slide rail 45, which is arranged on the first plate. The driving end of the deviation correction drive mechanism 42 is connected to the mounting seat 1, and the driving direction of the deviation correction drive mechanism 42 and the extension direction of the first slide rail 45 are both parallel to the width direction of the pole piece.

[0050] In this embodiment, the driving roller assembly can transport the pole piece clamped between the driving roller assembly and the pressure roller assembly by rotating. At the same time, under the drive of the mobile driving module 39, the entire clamping roller mechanism 41 can move and correct the pole piece. The overall structure is simple, occupies little space, and has a stable correction effect.

[0051] In the optional technical solution of this embodiment, the clamping roller mechanism 41 also includes a pressure plate 4; a mounting cavity and a pair of card slots 5 are provided on one side of the mounting seat 1, the pressure roller assembly is arranged in the mounting cavity, and the two ends of the pressure roller assembly are respectively clamped in the card slots 5; the pressure plate 4 is rotatably connected to the mounting seat 1, and is located at the notch of the card slot 5, and the pressure plate 4 can open or close the notch of the card slot 5 by rotating.

[0052] In this embodiment, the two ends of the pressure roller assembly are respectively clamped in the slot 5, so that the pressure roller assembly is located in the installation cavity to avoid external influences. At the same time, the pressure plate 4 located at the notch of the slot 5 can press the end of the pressure roller assembly in the slot 5 to ensure the stability of the pressure roller assembly. When the pressure roller assembly needs to be disassembled and replaced, it is only necessary to rotate the pressure plate 4 to open the notch of the slot 5 to take the pressure roller assembly out of the slot 5 for easy replacement.

[0053] In the optional technical solution of this embodiment, the clamping roller mechanism 41 further includes a second connecting shaft 6, a first connecting hole is provided at one end of the pressing plate 4, and a second connecting hole is provided on the mounting seat 1; one end of the second connecting shaft 6 is connected to the first connecting hole, and the other end is connected to the second connecting hole, and the pressing plate 4 can rotate relative to the mounting seat 1 through the second connecting shaft 6. In this way, the pressing plate 4 can rotate left and right relative to the opening of the card slot 5, so that the pressing plate 4 can better press the first connecting shaft 2 into the card slot 5.

[0054] However, the present invention is not limited thereto. Alternatively, the pressing plate 4 may be connected to the mounting seat 1 via a rotating shaft, a hinge shaft or a hinge, so that the pressing plate 4 can rotate up and down relative to the opening of the slot 5 .

[0055] In the optional technical solution of this embodiment, the mounting seat 1 includes a first seat body 7 and a second seat body 8, and the second seat body 8 is arranged on one side of the first seat body 7; a groove 9 is arranged on the first seat body 7, and a first notch 10 corresponding to the groove 9 is arranged on the second seat body 8, and the groove 9 and the first notch 10 form a mounting cavity; the two ends of the second seat body 8 facing away from the first seat body 7 are provided with card grooves 5, and the pressure plate 4 is rotatably connected to the two ends of the second seat body 8 facing away from the first seat body 7.

[0056] In this embodiment, a groove 9 is provided on one side of the first seat body 7 facing the second seat body 8. The second seat body 8 is U-shaped and has an opening to form a first notch 10. The first notch 10 and the groove 9 together form an installation cavity. Both ends of the first connecting shaft 2 are clamped in the clamping grooves 5 at both ends of the second seat body 8, and are pressed tightly in the clamping grooves 5 by the pressure plates 4 at both ends of the second seat body 8. The mounting seat 1 is a split structure, which is convenient for manufacturing, installation and disassembly, and easy for separate maintenance and replacement.

[0057] The second seat body 8 is slidably connected to the first seat body 7 via the second slide rail 46. A driving member 47 is provided on the first seat body 7. The driving direction of the driving member 47 and the extension direction of the second slide rail 46 are parallel to the thickness direction of the pole piece. The driving end of the driving member 47 is connected to the second seat body 8 to drive the pressure roller assembly to approach or move away from the driving roller assembly to clamp or release the pole piece.

[0058] In the optional technical solution of this embodiment, the clamping roller mechanism 41 also includes an adjustment seat 15, a first connecting member 16 and a second connecting member 17, and the pressure roller assembly is arranged on one side of the mounting seat 1, and the adjustment seat 15 is arranged on the side of the mounting seat 1 away from the pressure roller body 3; a support bearing 30 is arranged on the mounting seat 1, one end of the drive roller assembly is transmission-connected with the output end of the drive assembly, and the other end is connected to the support bearing 30; a connecting waist hole 24, a second notch 25 and a third notch 26 are arranged on the side of the adjustment seat 15 away from the mounting seat 1, and a positioning pin 27 is arranged on the drive assembly, one end of the first connecting member 16 passes through the connecting waist hole 24 to connect to the mounting seat 1, one end of the second connecting member 17 passes through the second notch 25 to connect to the drive assembly, and the positioning pin 27 is located in the third notch 26. In this embodiment, through the cooperation of the first connecting member 16 and the waist hole, the position of the adjustment seat 15 can be adjusted, and then the position of the drive assembly can be adjusted, so that the gap between the drive roller assembly and the pressure roller assembly can be changed, thereby improving adaptability. In addition, when disassembling, it is only necessary to remove the second connecting member 17, and then the driving assembly and the driving roller assembly can be pulled out from the side, so that both disassembly and installation are convenient.

[0059] In the optional technical scheme of this embodiment, the pressure roller assembly includes a pressure roller body 3, a first connecting shaft 2 and a first axial positioning structure, the first connecting shaft 2 is arranged in the installation cavity, and the two ends of the first connecting shaft 2 are respectively clamped in the clamping groove 5; the pressure roller body 3 is sleeved on the first connecting shaft 2 and can rotate relative to the first connecting shaft 2; the first axial positioning structure is arranged on the first connecting shaft 2, and the first axial positioning structure is used to fix the axial position of the pressure roller body 3; the pressure plate 4 is rotatably connected to the mounting seat 1, and is located at the notch of the clamping groove 5, and the pressure plate 4 can open or close the notch of the clamping groove 5 by rotating.

[0060] In this embodiment, the pressure roller body 3 is rotatably mounted on the first connecting shaft 2 and is positioned by a first axial positioning structure to ensure stability and a simple structure. The two ends of the first connecting shaft 2 are respectively clamped in the clamping groove 5, so that the pressure roller body 3 is located in the installation cavity to prevent external influences on the rotation of the pressure roller body 3. At the same time, the pressure plate 4 located at the notch of the clamping groove 5 can press the end of the first connecting shaft 2 in the clamping groove 5 to ensure the stability of the first connecting shaft 2. When the pressure roller body 3 needs to be disassembled and replaced, it is only necessary to rotate the pressure plate 4 to open the notch of the clamping groove 5 to remove the first connecting shaft 2 from the clamping groove 5 for easy replacement.

[0061] In the optional technical solution of this embodiment, the first axial positioning structure includes a first bearing retaining ring 11 and a second bearing retaining ring 12, and both ends of the pressure roller body 3 are connected to the first connecting shaft 2 through the first bearing 13; the first bearing retaining ring 11 and the second bearing retaining ring 12 are both sleeved on the first connecting shaft 2, and are respectively located at both ends of the pressure roller body 3 and axially abut against the first bearing 13.

[0062] In this embodiment, the roller body 3 is connected to the first connecting shaft 2 through the first bearing 13, so that the roller body 3 can rotate relative to the first connecting shaft 2, and the rotation effect is stable. At the same time, the first bearing retaining ring 11 and the second bearing retaining ring 12 installed on the first connecting shaft 2 are used to axially position the first bearings 13 at both ends of the roller body 3. The structure is simple, the installation is convenient, and the positioning effect is good.

[0063] In this embodiment, the first axial positioning structure may also include two locking sleeves arranged on the first connecting shaft 2, and the two locking sleeves are located at both ends of the pressure roller body 3; specifically, the locking sleeves are locking plates, and the two locking plates limit the pressure roller body 3 to a preset axial position of the first connecting shaft 2 to achieve positioning. The locking plates have a simple structure and are easy to operate.

[0064] In the optional technical solution of this embodiment, the driving roller assembly includes a driving roller body 14, a second axial positioning structure and a third connecting shaft 18, the driving roller body 14 is sleeved on the third connecting shaft 18, the second axial positioning structure is arranged on the third connecting shaft 18, and the second axial positioning structure is used to fix the axial position of the driving roller body 14; one end of the third connecting shaft 18 is drivingly connected to the output end of the driving assembly, and the other end is plugged into the support bearing 30;

[0065] Specifically, the second axial positioning structure includes a third bearing retaining ring 20 and a fourth bearing retaining ring 21. The driving roller body 14 is sleeved on the third connecting shaft 18. Both ends of the driving roller body 14 are connected to the third connecting shaft 18 through the second bearing 19. The third bearing retaining ring 20 and the fourth bearing retaining ring 21 are sleeved on the third connecting shaft 18 and are respectively located at both ends of the driving roller body 14 and axially abut against the second bearing 19; the driving component includes a motor 22 and a motor seat 23. The motor 22 is installed on the motor seat 23. The motor seat 23 is provided with a positioning pin 27. The first seat body 7 is provided with a support bearing 30. The adjustment seat 15 is connected to the first connecting member 16. The first seat body 7 is connected to the side away from the second seat body 8, and partially extends out, the second notch 25 and the third notch 26 are located at the end of the extended part, the output end of the motor 22 is connected to one end of the third connecting shaft 18, and the other end of the third connecting shaft 18 is connected to the support bearing 30. The connection mode between the driving roller body 14, the third connecting shaft 18, the second bearing 19, the third bearing retaining ring 20 and the fourth bearing retaining ring 21 is the same as that of the pressure roller body 3, which will not be repeated here. The motor seat 23 is positioned by the positioning pin 27 and the third notch 26, and the second connecting member 17 is connected to the motor seat 23 through the second notch 25 to achieve the fixation of the motor seat 23. Among them, through the cooperation of the first connecting member 16 and the waist hole, the position of the adjustment seat 15 can be adjusted, and then the position of the motor seat 23 can be adjusted, so that the gap between the driving roller body 14 and the pressure roller body 3 can be changed, and the adaptability is improved. In addition, when disassembling, only the second connecting member 17 needs to be removed, and the driving assembly and the third connecting shaft 18 can be pulled out from the side, which is convenient for disassembly and installation.

[0066] Preferably, a plurality of second notches 25 and third notches 26 are alternately arranged to improve the stability of the connection and positioning.

[0067] In this embodiment, the first connecting member 16 and the second connecting member 17 are both bolts, but are not limited thereto and may also be other connecting members that can meet the requirements.

[0068] In the optional technical solution of this embodiment, the structure and size of the driving roller assembly and the pressure roller assembly are the same. The driving roller assembly and the pressure roller assembly can be used interchangeably to improve applicability. Preferably, the structure and size of the driving roller body 14 and the pressure roller body 3 are the same. The driving roller body and the pressure roller body 3 can be used interchangeably to improve applicability.

[0069] An optional technical solution of this embodiment further includes an adjusting member 28 , which is connected to the mounting seat 1 and is used to adjust the angle between the adjusting seat 15 and the mounting seat 1 .

[0070] Specifically, the adjusting member 28 is arranged on the first seat body 7 and connected to the extended part of the adjusting seat 15. At the same time, the adjusting member 28 is perpendicular to the axial direction of the first connecting shaft 2 and can reciprocate in a direction perpendicular to the axial direction of the first connecting shaft 2. The adjusting member 28 can change the angle between the adjusting seat 15 and the first seat body 7 through movement, thereby changing the angle of the motor seat 23, and then changing the angle of the third connecting shaft 18, so that the first connecting shaft 2 and the third connecting shaft 18 can be parallel. The adjustment is convenient and accurate through the adjusting member 28. Among them, the adjusting member 28 is preferably an adjusting bolt with a simple structure and stable adjustment. However, it is not limited to this, and it can also be other existing adjustment structures as long as it meets the needs.

[0071] In an optional technical solution of this embodiment, the driving roller assembly further includes a one-way bearing 29, which is disposed on the third connecting shaft 18 and is located inside the driving roller body 14 and connected to the driving roller body 14, thereby improving the transmission accuracy and efficiency between the third connecting shaft 18 and the driving roller body 14.

[0072] A lithium battery cell winding device provided in this embodiment includes the above-mentioned pole piece feeding and correcting device. Therefore, the technical advantages and effects achieved by the lithium battery cell winding device include the technical advantages and effects achieved by the above-mentioned pole piece feeding and correcting device, which will not be repeated here.

[0073] Specifically, it includes a winding needle 31, and the electrode feeding correction device is provided with two for driving the positive electrode sheet 34 and the negative electrode sheet 35 respectively, and the diaphragm guiding module 38 has an upper diaphragm passing roller 32 when cooperating with the positive electrode sheet 34, and has a film joining roller 33 when cooperating with the negative electrode sheet 35. The upper diaphragm passing roller 32 is used to guide the upper diaphragm 36, and the film joining roller 33 is used to guide the lower diaphragm 37. The positive electrode sheet 34, the upper diaphragm 36, the negative electrode sheet 35 and the lower diaphragm 37 are stacked and wound on the winding needle 31 in sequence.

[0074] Taking the diaphragm guide module 38 having the upper diaphragm roller 32 as an example, the diaphragm guide module 38 also has the upper diaphragm roller 32 and a driver 43. The upper diaphragm roller 32 driver 43 is used to drive the upper diaphragm roller 32 to reciprocate in a direction perpendicular to the thickness of the pole piece, wherein the driving direction of the driver 43, the driving direction of the mobile driving module 39 and the driving direction of the correction driving mechanism 42 form an XYZ direction.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pole piece feeding correction device, characterized in that: include: A deviation-correcting clamping roller module, a diaphragm guide module (38) and a moving drive module (39); The diaphragm guide module (38) and the mobile drive module (39) are both connected to the deviation correction clamping roller module, and the deviation correction clamping roller module is used to transport the pole piece to the winding needle (31), and the diaphragm guide module (38) is used to guide and transport the diaphragm to the winding needle (31); The moving driving module (39) is used to drive the deviation-correcting clamping roller module to move closer to or away from the winding needle (31).

2. The electrode feeding correction device according to claim 1 is characterized in that: The deviation-correcting clamping roller module comprises a connecting seat (40), a clamping roller mechanism (41) and a deviation-correcting driving mechanism (42); The movable drive module (39), the diaphragm guide module (38), the clamping roller mechanism (41) and the deviation correction drive mechanism (42) are all connected to the connecting seat (40), and the diaphragm guide module (38) and the clamping roller mechanism (41) are both located on one side of the connecting seat (40), and the deviation correction drive mechanism (42) is located on the other side of the connecting seat (40); The movable drive module (39) is used to drive the connecting seat (40) to move closer to or away from the winding needle (31), and the deviation correction drive mechanism (42) is used to drive the clamping roller mechanism (41) to reciprocate relative to the connecting seat (40) to correct the deviation of the pole piece.

3. The pole piece feeding deviation correction device according to claim 2, characterized in that: The clamping roller mechanism (41) comprises a mounting seat (1), a pressure roller assembly, a driving roller assembly and a driving assembly; The mounting seat (1) is slidably connected to the connecting seat (40), and the pressure roller assembly, the driving roller assembly and the driving assembly are all arranged on the mounting seat (1); A pole piece driving gap is provided between the pressure roller assembly and the driving roller assembly, and the driving assembly is used to drive the driving roller assembly to rotate.

4. The pole piece feeding deviation correction device according to claim 3 is characterized in that: The clamping roller mechanism (41) further comprises a pressing plate (4); A mounting cavity and a pair of clamping grooves (5) are provided on one side of the mounting seat (1); the pressure roller assembly is arranged in the mounting cavity, and two ends of the pressure roller assembly are respectively clamped in the clamping grooves (5); The pressing plate (4) is rotatably connected to the mounting seat (1) and is located at the notch of the card slot (5). The pressing plate (4) can open or close the notch of the card slot (5) by rotating.

5. The pole piece feeding deviation correction device according to claim 3 is characterized in that: The mounting seat (1) and the connecting seat (40) are slidably connected via a first slide rail (45); a driving end of the deviation correction drive mechanism (42) is connected to the mounting seat (1); and a driving direction of the deviation correction drive mechanism (42) and an extending direction of the first slide rail (45) are both parallel to a width direction of the pole piece.

6. The pole piece feeding deviation correction device according to claim 4, characterized in that: The mounting seat (1) comprises a first seat body (7) and a second seat body (8), and the second seat body (8) is arranged on one side of the first seat body (7); the driving roller assembly is installed on the first seat body (7), and the pressure roller assembly is installed on the second seat body (8), and the second seat body (8) can be driven to approach or move away from the first seat body (7).

7. The pole piece feeding deviation correction device according to claim 6, characterized in that: The second seat body (8) is slidably connected to the first seat body (7) via a second slide rail (46); a driving member (47) is provided on the first seat body (7); a driving direction of the driving member (47) and an extending direction of the second slide rail (46) are both parallel to a thickness direction of the pole piece; a driving end of the driving member (47) is connected to the second seat body (8) to drive the pressure roller assembly to approach or move away from the driving roller assembly to clamp or release the pole piece.

8. The pole piece feeding deviation correction device according to claim 3 is characterized in that: The driving roller assembly and the pressing roller assembly have the same structure and size.

9. The pole piece feeding deviation correction device according to claim 2, characterized in that: The diaphragm guide module (38) comprises an upper diaphragm roller (32) and a driver (43), wherein the driver (43) drives the upper diaphragm roller (32) to move along the pole piece and thickness direction.

10. A lithium battery cell winding device, characterized in that: It comprises the pole piece feeding correction device as described in any one of claims 1 to 9.

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