Winding machine

Abstract

The utility model relates to a winding machine which comprises a machine frame, a positive electrode unwinding device, a negative electrode unwinding device, two diaphragm unwinding devices and a winding device, and the positive electrode unwinding device, the negative electrode unwinding device, the two diaphragm unwinding devices and the winding device are installed on the machine frame. A positive pole mounting guide rail and a negative pole mounting guide rail are arranged on the rack, the positive pole mounting guide rail is mounted at the upper end of the rack, the negative pole mounting guide rail is mounted at the lower end of the rack, the positive pole unwinding device is arranged on the positive pole mounting guide rail, and the negative pole unwinding device is mounted on the negative pole mounting guide rail. The winding machine has the following advantages of double-layer belt conveying, modular unitization, rail type installation, expandability and multi-core winding.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a winding machine. Background Art

[0002] The main line of development of winding equipment in the lithium battery industry is basically to improve production efficiency, winding accuracy and equipment stability. However, when the line speed reaches a certain critical value, the instability it brings is greater than the benefits brought by the efficiency improvement. The ultimate efficiency cannot bring ultimate output. Therefore, multi-core winding technology has become a research topic for various manufacturers. However, multi-core technology also faces some challenges, such as difficulty in process control, high requirements for equipment accuracy, and large footprint. Utility Model Content

[0003] The main purpose of the utility model is to provide a winding machine to solve the above technical problems, set up a double-layer structure, reduce the floor space, and facilitate installation.

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

[0005] A winding machine comprises a frame, a positive electrode unwinding device, a negative electrode unwinding device, a diaphragm unwinding device and a winding device, wherein the positive electrode unwinding device comprises a positive electrode unwinding mechanism, a positive electrode laser cutting mechanism, a positive electrode slitting mechanism, a positive electrode regulating mechanism and a positive electrode cutting and gluing mechanism, and the negative electrode unwinding device comprises a negative electrode unwinding mechanism, a negative electrode laser cutting mechanism, a negative electrode slitting mechanism, a negative electrode regulating mechanism and a negative electrode cutting and gluing mechanism, the positive electrode unwinding mechanism, the negative electrode unwinding mechanism, two diaphragm unwinding devices and the winding device are installed on the frame, and the frame is provided with a positive electrode mounting rail and a negative electrode mounting rail, the positive electrode mounting rail is installed at the lower end of the frame, and the negative electrode mounting rail is installed at the upper end of the frame, and the positive electrode laser cutting mechanism, the positive electrode slitting mechanism, the positive electrode regulating mechanism and the positive electrode cutting and gluing mechanism are arranged On the positive electrode mounting rail, the negative electrode laser cutting mechanism, the negative electrode slitting mechanism, the negative electrode adjusting mechanism and the negative electrode cutting and gluing mechanism are installed on the negative electrode mounting rail, the positive electrode unwinding mechanism and the negative electrode unwinding mechanism are used to unwind the electrode sheet, the positive electrode laser cutting mechanism and the negative electrode laser cutting mechanism are used to perform ear shaping and cutting of the electrode sheet, and monitor the ear shape and quality in real time, the positive electrode slitting mechanism and the negative electrode slitting mechanism are used to cut the electrode sheet into the width of the electrode sheet required for a single battery cell, the positive electrode adjusting mechanism and the negative electrode adjusting mechanism are used to remove dust from the surface of the electrode sheet, correct the relative position of the electrode sheet, and adjust the tension of the electrode sheet in real time, the positive electrode cutting and gluing mechanism and the negative electrode cutting and gluing mechanism are used to perform end face protection on the electrode sheet cutting position to prevent the electrode sheet cutting edge burrs from piercing the diaphragm and causing battery cell short circuit.

[0006] As a preferred technical solution, the winding device includes a winding needle assembly, a rotating disk, a turntable and a rotating assembly, four winding needle assemblies are installed in order between the rotating disk and the turntable, the rotating disk and the turntable are rotatably arranged on the frame, the rotating assembly drives the rotating disk to rotate, the winding needle assembly includes a winding motor, a transmission unit, a fixed shaft, a connecting plate and a winding needle unit, the fixed shaft is fixed between the turntable and the rotating disk, the fixed shaft is connected to the transmission unit and the winding needle unit through the connecting plate, the transmission unit is connected to the winding needle unit, the winding motor drives the transmission unit to rotate, and drives the winding needle unit to rotate.

[0007] As a preferred technical solution, the transmission unit includes a transmission shaft and a transmission gear, the transmission gear is fixed to the transmission shaft, and the transmission shaft passes through the rotating disk and the connecting plate in sequence.

[0008] As a preferred technical solution, the needle winding unit includes a needle winding shaft, a needle winding and a gear sleeve, the gear sleeve is rotatably arranged on the connecting plate, the needle winding is installed on the needle winding shaft, and the gear sleeve is detachably arranged at both ends of the needle winding shaft.

[0009] As a preferred technical solution, the rotating assembly includes a rotating motor and a rotating gear, the rotating gear is engaged with the rotating disk, and the rotating motor drives the rotating gear to rotate.

[0010] As a preferred technical solution, it further includes a roller transmission speed compensation mechanism, which is arranged in the positive electrode laser cutting mechanism, the positive electrode slitting mechanism, the positive electrode adjustment mechanism, the positive electrode cutting and gluing mechanism, the negative electrode laser cutting mechanism, the negative electrode slitting mechanism, the negative electrode adjustment mechanism and the negative electrode cutting and gluing mechanism, and is used for the reverse force of the roller on the electrode sheet.

[0011] As a preferred technical solution, the roller transmission speed compensation mechanism includes a main drive component, a transmission member and a roller component, the main drive component and the roller component are installed on a frame, the main drive component is connected to the roller component through the transmission member, the main drive component includes a main drive roller, a transmission shaft, a motor, a driving wheel and a mounting seat, the mounting seat is installed on the frame, the motor is installed on the mounting seat, the main drive roller and the driving wheel are fixed on the transmission shaft, the transmission member is connected to the driving wheel, and the motor drives the transmission shaft to rotate.

[0012] As a preferred technical solution, the roller assembly includes a roller, a roller shaft and a driven wheel, the roller and the driven wheel are fixed on the roller shaft, the driven wheel is connected to the driving wheel through the transmission member, and shaft sleeves are respectively provided at both ends of the transmission shaft and the roller shaft, and the shaft sleeves are installed on the frame.

[0013] As a preferred technical solution, the roller transmission speed compensation mechanism further includes a tensioning assembly, the tensioning assembly is in contact with the transmission member, the tensioning assembly includes a tensioning wheel and a tensioning mounting seat, the tensioning mounting seat is installed on the frame, the tensioning wheel is rotatably set on the tensioning mounting seat, and the tensioning wheel is in contact with the transmission member.

[0014] As a preferred technical solution, the over-roll transmission speed compensation mechanism further includes a clamping assembly, which is in contact with the main driving assembly. The clamping assembly includes a pressure roller, a pressure roller shaft, a pressure roller shaft mounting seat and a pressure roller cylinder. The pressure roller is fixed on the pressure roller shaft, both ends of the pressure roller shaft are mounted on the pressure roller shaft mounting seat, and the pressure roller cylinder drives the pressure roller shaft mounting seat to move.

[0015] The beneficial effects of the utility model are:

[0016] 1. Double-layer belt conveyor: In the overall layout of the equipment, a double-layer belt conveyor is used for design, and the positive and negative plates are divided into upper and lower belt conveyor paths, which can increase the maintenance operation space and improve the convenience of employees' operation;

[0017] 2. Unitized module: The functions of the equipment are classified in a unit manner, and the classified functional modules are designed to be independently disassembled and transported. That is, the positive electrode laser cutting mechanism, positive electrode slitting mechanism, positive electrode adjustment mechanism, positive electrode cutting and gluing mechanism, negative electrode unwinding mechanism, negative electrode laser cutting mechanism, negative electrode slitting mechanism and negative electrode adjustment mechanism are respectively made into movable integral structures as unit modules. Each unit module uses a unified installation track as a reference. After being transported to the installation site, the unit module can be quickly installed and positioned to ensure the relative consistency of each unit without repeated calibration;

[0018] 3. Track installation: High installation convenience, allowing each module unit to be moved or adjusted on the rail, so as to be flexibly configured according to specific needs. The rail installation can effectively resist vibration and impact, ensure the long-term operation of the equipment, and can increase the distance between the unit modules for easy maintenance during maintenance;

[0019] 4. Expandable: The equipment adopts the structural design of the above two modes, which can bring strong expandability to the equipment from another perspective. For example, taking the positive electrode adjustment mechanism as an example, we can move the positive electrode slitting mechanism and the positive electrode cutting and gluing mechanism on the track, and then add the positive electrode adjustment mechanism. There is no need to modify the original structure, which improves the convenience of equipment upgrade; when other functional modules need to be added later, the positive electrode adjustment mechanism can be assembled in advance, and a positive electrode adjustment mechanism can be installed next to the functional module to complete the addition of functional modules, saving time and cost;

[0020] 5. Multi-core winding: The winding device uses an independent winding needle assembly, which can be compatible with the winding of 2, 4, 6 or 8 battery cells. At the same time, it adopts an integrated unloading method, which can achieve a good efficiency match;

[0021] 6. Reduced floor space, reduced labor, reduced energy consumption, reduced costs, and increased material utilization improve equipment competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the winding machine involved in the utility model;

[0023] Figure 2 It is a three-dimensional diagram of the winding device involved in the utility model;

[0024] Figure 3 It is a side view of the winding device involved in the utility model;

[0025] Figure 4 It is a front view of the winding device involved in the utility model;

[0026] Figure 5 It is a structural schematic diagram of the roller transmission speed compensation mechanism involved in the utility model;

[0027] Figure 6 It is a side view of the roller transmission speed compensation mechanism involved in the utility model;

[0028] Figure 7 This is a schematic diagram of a pole piece involved in Example 1 of the utility model;

[0029] Figure 8 This is a schematic diagram of the embodiment 1 of the present utility model after the pole piece laser cutting the pole ear;

[0030] Fig. 9 This is a schematic diagram of the electrode after cutting in Example 1 of the utility model;

[0031] Fig.10 This is a schematic diagram of a battery cell formed by winding according to Example 1 of the present utility model;

[0032] Fig.11 This is a schematic diagram of a pole piece involved in Example 2 of the present utility model;

[0033] Fig.12 This is a schematic diagram of the embodiment 2 of the present utility model involving the pole piece after the pole ear is cut by laser;

[0034] Fig.13 This is a schematic diagram of the electrode after cutting in Example 2 of the present utility model;

[0035] Fig.14 This is a schematic diagram of a battery cell formed by winding in Example 2 of the present utility model;

[0036] Fig.15 This is a schematic diagram of a pole piece related to Example 3 of the present utility model;

[0037] Fig.16 This is a schematic diagram of Example 3 of the utility model involving a pole piece after laser cutting of a pole ear;

[0038] Fig.17 This is a schematic diagram of the electrode after cutting in Example 3 of the present utility model;

[0039] Fig.18 This is a schematic diagram of a battery cell formed by winding according to Example 3 of the present utility model;

[0040] Fig.19 This is a schematic diagram of a pole piece related to Example 4 of the utility model;

[0041] Fig. 20 This is a schematic diagram of the embodiment 4 of the present utility model after the pole piece laser cutting the pole ear;

[0042] Fig.21 This is a schematic diagram of the electrode after cutting in Example 4 of the utility model;

[0043] Fig. 22 This is a schematic diagram of a battery cell formed by winding in Example 4 of the present utility model. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0045] like Figure 1As shown, a winding machine includes a frame 1, a positive electrode unwinding device 3, a negative electrode unwinding device 7, a first diaphragm unwinding device 2, a second diaphragm unwinding device 4, a winding device 6 and a roller transmission speed compensation mechanism 6, the positive electrode unwinding device 3 includes a positive electrode unwinding mechanism 31, a positive electrode laser cutting mechanism 32, a positive electrode slitting mechanism 33, a positive electrode adjustment mechanism 35 and a positive electrode cutting and gluing mechanism 34, the positive electrode unwinding mechanism 31 is used to unwind the positive electrode sheet, the positive electrode laser cutting mechanism 31 is used to shape and cut the positive electrode sheet, and monitor the shape and quality of the ear in real time, and the positive electrode slitting mechanism 33 is used to cut the positive electrode sheet into The positive electrode adjusting mechanism 35 is used to remove dust from the surface of the positive electrode sheet, correct the relative position of the positive electrode sheet, and adjust the tension of the positive electrode sheet in real time. The positive electrode cutting and gluing mechanism 34 is used to protect the end surface of the positive electrode sheet cutting position to prevent the burrs of the positive electrode sheet from piercing the diaphragm and causing the battery cell short circuit. The negative electrode unwinding device 7 includes a negative electrode unwinding mechanism 71, a negative electrode laser cutting mechanism 72, a negative electrode slitting mechanism 73 and a negative electrode adjusting mechanism 74. The negative electrode unwinding mechanism 71 is used to unwind the negative electrode sheet, and the negative electrode laser cutting mechanism 72 is used to shape the negative electrode sheet into a pole ear. The negative electrode slitting mechanism 73 is used to slit the negative electrode sheet into the width of the electrode sheet required for a single battery cell. The negative electrode adjusting mechanism 74 is used to remove dust from the surface of the negative electrode sheet, correct the relative position of the negative electrode sheet, and adjust the tension of the negative electrode sheet in real time. The positive electrode unwinding mechanism 31, the negative electrode unwinding mechanism 71, the first diaphragm unwinding device 2, the second diaphragm unwinding device 4 and the winding device 5 are installed on the frame 1. The frame 1 is provided with a positive electrode mounting rail 11 and a negative electrode mounting rail (not shown in the figure). The positive electrode mounting rail 11 is installed at the upper end of the frame 1, and the negative electrode mounting rail The rail is installed at the lower end of the frame 1, the positive electrode laser cutting mechanism 32, the positive electrode slitting mechanism 33, the positive electrode adjusting mechanism 35 and the positive electrode cutting and gluing mechanism 34 are arranged on the positive electrode mounting guide rail 11, the negative electrode laser cutting mechanism 72, the negative electrode slitting mechanism 73 and the negative electrode adjusting mechanism 74 are installed on the negative electrode mounting guide rail, and the roller transmission speed compensation mechanism 6 is arranged on the positive electrode laser cutting mechanism 32, the positive electrode slitting mechanism 33, the positive electrode adjusting mechanism 35, the positive electrode cutting and gluing mechanism 34, the negative electrode unwinding mechanism 71, the negative electrode laser cutting mechanism 72, the negative electrode slitting mechanism 73 and the negative electrode adjusting mechanism 74 for transmitting the electrode sheets.

[0046] The above winding machine has the following technical advantages:

[0047] 1. Double-layer belt conveyor: In the overall layout of the equipment, a double-layer belt conveyor is used for design, and the positive and negative plates are divided into upper and lower belt conveyor paths, which can increase the maintenance operation space and improve the convenience of employees' operation;

[0048] 2. Unitized module: The functions of the equipment are classified in a unit manner, and the classified functional modules are designed to be independently disassembled and transported, that is, the positive electrode laser cutting mechanism 32, the positive electrode slitting mechanism 33, the positive electrode adjustment mechanism 35, the positive electrode cutting and gluing mechanism 34, the negative electrode unwinding mechanism 31, the negative electrode laser cutting mechanism 72, the negative electrode slitting mechanism 73 and the negative electrode adjustment mechanism 74 are respectively made into movable integral structures as unit modules. Each unit module uses a unified installation track as a reference. After being transported to the installation site, the unit module can be quickly installed and positioned to ensure the relative consistency of each unit without repeated calibration;

[0049] 3. Track installation: High installation convenience, allowing each module unit to be moved or adjusted on the rail, so as to be flexibly configured according to specific needs. The rail installation can effectively resist vibration and impact, ensure the long-term operation of the equipment, and can increase the distance between the unit modules for easy maintenance during maintenance;

[0050] 4. Expandable: The equipment adopts the structural design of the above two modes, which can bring strong expandability to the equipment from another perspective. For example, taking the positive electrode adjustment mechanism 35 as an example, we can move the positions of the positive electrode cutting mechanism 33 and the positive electrode cutting and gluing mechanism 34 on the track, and then add the positive electrode adjustment mechanism 35. There is no need to modify the original structure, which improves the convenience of equipment upgrade; when other functional modules need to be added later, the positive electrode adjustment mechanism 35 can be assembled in advance, and a positive electrode adjustment mechanism 35 can be installed next to the functional module to complete the addition of functional modules, saving time and cost;

[0051] 5. Multi-core winding: The winding device uses an independent winding needle assembly, which can be compatible with the winding of 2, 4, 6 or 8 battery cells. At the same time, it adopts an integrated unloading method, which can achieve a good efficiency match;

[0052] 6. Reduced floor space, reduced labor, reduced energy consumption, reduced costs, and increased material utilization improve equipment competitiveness.

[0053] like Figure 2-4 As shown, the winding device 5 includes a winding needle assembly 53, a rotating disk 51, a rotating disk 52 and a rotating assembly 54. The rotating disk 51 and the rotating disk 52 can be rotatably installed on the frame. Four winding needle assemblies 53 are equidistantly installed between the rotating disk 51 and the rotating disk 52. The rotating disk 51 and the rotating disk 52 are used to support the winding needle assembly 53. The winding needle assembly 53 is driven, and the first diaphragm d, the positive electrode sheet c, the second diaphragm b and the negative electrode sheet a are wound on the winding needle assembly 53 to form a battery cell. The rotating assembly 54 drives the rotating disk 52 to rotate, so as to drive the winding needle assembly 53 to switch between the winding station, the gluing station, the unloading station and the loading station.

[0054] The winding needle assembly 53 includes a winding motor 531, a transmission unit 533, a fixed shaft 532, a connecting plate 535 and a winding needle unit 534. The fixed shaft 532 is fixed between the turntable 52 and the rotating disk 53. The fixed shaft 532 is connected to the transmission unit 533 and the winding needle unit 534 through the connecting plate 535. The winding needle unit 534 is installed between the two connecting plates 535. In this embodiment, four winding needle units 534 are provided. In particular, the number of winding needle units 534 can be set according to the width of the electrode sheet. 1-4 conventional battery cells or one wide battery cell can be wound at the same time. The transmission unit 533 is connected to the winding needle unit 534. The winding motor 531 drives the transmission unit 533 to rotate, thereby driving the winding needle unit 534 to rotate.

[0055] The transmission unit 533 includes a transmission shaft 5331 and a transmission gear 5332 . The transmission gear 5332 is fixed to the transmission shaft 5331 . The transmission shaft 5331 passes through the rotating disk 51 and the connecting plate 535 in sequence. The transmission shaft 5331 rotates relative to the rotating disk and the connecting plate 535 .

[0056] The winding needle unit 534 includes a winding needle shaft 5342, a winding needle 5341 and a gear sleeve 5343. The gear sleeve 5343 is rotatably arranged on the connecting plate 535. The winding needle 5341 is installed on the winding needle shaft 5342. The gear sleeve 5343 is detachably arranged on both ends of the winding needle shaft 5342.

[0057] The rotating assembly 54 includes a rotating motor 541 and a rotating gear 542 . The rotating gear 542 is meshed with the rotating disk 52 . The rotating motor 541 drives the rotating gear 542 to rotate, thereby driving the winding needle assembly 53 to switch between different workstations.

[0058] Before use, the above-mentioned winding device sets the number of conventional winding needle units 534 according to the current electrode width, or sets a winding needle unit 534 that can wind wide electrode sheets. In the loading station, the winding needle unit 534 is installed between the two connecting plates 535. The rotating component 54 drives the rotating disk 51 to rotate, so that the winding needle assembly 53 is rotated to the winding station. The first diaphragm d, the positive electrode sheet c, the second diaphragm b and the negative electrode sheet a are wound on the winding needle assembly 53 located on the winding station to form a battery cell. The rotating component 54 drives the rotating disk 51 to rotate, so that the winding needle assembly 53 is rotated to the gluing station. After cutting the diaphragm, the battery cell is glued. After the gluing is completed, the rotating component 54 drives the rotating disk 51 to rotate, so that the winding needle assembly 53 is rotated to the unloading station, and the winding needle unit 534 is removed from the connecting plate 535 to complete a winding.

[0059] like Figure 5-6As shown, the roller transmission speed compensation mechanism 6 includes a main drive component 61, a transmission member 63, a roller component 62, a tensioning component 64 and a pressing component 65. The main drive component 61, the roller component 62, the tensioning component 64 and the pressing component 65 are installed on the frame. The main drive component 61 is connected to the roller component 62 through the transmission member 63. The roller component 62 is provided with multiple, and the main drive component 61 and the multiple roller components 62 jointly drive the pole piece. In this embodiment, the transmission member 63 is a chain or a belt, which is used to transmit the power of the main drive component 61 to the roller component 62, so that the main drive component 61 and the roller component 62 rotate synchronously, which can greatly reduce the reverse force on the material caused by the roller inertia.

[0060] The main driving assembly 61 includes a main driving roller 614, a transmission shaft 613, a motor 611, a driving wheel 616, a first sleeve 615 and a mounting seat 612. The mounting seat 612 and the first sleeve 615 are installed on the frame, the motor 611 is installed on the mounting seat 612, and the first sleeve 615 is installed to both ends of the transmission shaft 613 so that the transmission shaft 613 can rotate freely. The main driving roller 614 and the driving wheel 616 are fixed on the transmission shaft 613, the transmission member 663 is connected to the driving wheel 16, and the motor 611 drives the transmission shaft 613 to rotate, thereby driving the main driving roller 614 to rotate to transmit the pole piece.

[0061] The roller assembly 62 includes a roller 621, a roller shaft 622, a driven wheel 624 and a second sleeve 623. The roller 621 and the driven wheel 624 are fixed on the roller shaft 622. The driven wheel 624 is connected to the driving wheel 616 through a transmission member 63. The second sleeve 623 is installed on the frame, and the second sleeve 623 is sleeved on both ends of the roller shaft 622. The diameter of the roller 621 and the main driving roller 614 is ≥150mm. Compared with the 80mm roller, the 150mm roller 621 is used to transmit the pole piece, and the probability of the pole ear folding is reduced by 50%. The roller shaft 622 is supported at both ends. Compared with the traditional single cantilever structure, the strength of the roller shaft 622 is increased by 100%.

[0062] The tensioning assembly 64 includes a tensioning wheel 642 and a tensioning mounting seat 641. The tensioning mounting seat 641 is installed on the frame. The tensioning wheel 642 is rotatably set on the tensioning mounting seat 641. The tensioning wheel 641 abuts against the transmission member 63 to keep the transmission member 63 tensioned, increase the contact area between the transmission member 63 and the driving wheel 616 and the transmission wheel 624, and prevent the transmission member 63 from slipping.

[0063] The clamping assembly 65 includes a pressure roller 651, a pressure roller shaft 652, a pressure roller shaft mounting seat 653 and a pressure roller cylinder 654. The pressure roller 651 is fixed on the pressure roller shaft 652, and both ends of the pressure roller shaft 652 are mounted on the pressure roller shaft mounting seat 653. The pressure roller cylinder 54 drives the pressure roller shaft mounting seat 653 to move, thereby pressing the pole piece to the surface of the active roller 614.

[0064] [Example 1]

[0065] like Figure 7-10 As shown, in the present embodiment, a one-out-two method is adopted for winding, that is, the electrode sheet is provided with a coating layer and two ceramic layers, the two ceramic layers are provided at both ends of the coating layer, the negative electrode unwinding device 3 and the positive electrode unwinding device 7 respectively unwind the negative electrode sheet and the positive electrode sheet of the above structure, wherein the laser cutting mechanism cuts the two ends of the coating layer to form pole ears, the slitting mechanism cuts the electrode sheet into two sections, and two winding needle units 534 are provided, and the two sections of the positive electrode sheet and the negative electrode sheet are wound to form two battery cells.

[0066] [Example 2]

[0067] like Figure 11-14 As shown, in this embodiment, winding is performed in a one-out-four manner, that is, the electrode sheet is provided with two coating layers and three ceramic layers, the two ceramic layers are provided at the two ends of the coating layer, and one ceramic layer is provided between the two coating layers. The negative electrode unwinding device 3 and the positive electrode unwinding device 7 respectively unwind the negative electrode sheet and the positive electrode sheet of the above structure, wherein the laser cutting mechanism cuts the electrode sheet into two sections and cuts the two ends of the coating layer to form pole ears, the slitting mechanism cuts the two sections of the electrode sheet into four sections of the electrode sheet, and four winding needle units 534 are provided, and the four sections of the positive electrode sheet and the negative electrode sheet are wound to form four battery cells.

[0068] [Example 3]

[0069] like Figure 15-18 As shown, in the present embodiment, winding is performed in a one-out-six manner, that is, the electrode sheet is provided with three sections of coating layers and four sections of ceramic layers, two sections of ceramic layers are provided at both ends of the coating layers, wherein the two sections of ceramic layers are respectively provided between every two adjacent sections of the coating layers, the negative electrode unwinding device 3 and the positive electrode unwinding device 7 respectively unwind the negative electrode sheet and the positive electrode sheet of the above structure, wherein the laser cutting mechanism cuts the electrode sheet into three sections and cuts the two ends of the coating layer to form pole ears, the slitting mechanism slits the three sections of the electrode sheet into six sections of the electrode sheet, and six winding needle units 534 are provided, and the six sections of the positive electrode sheet and the negative electrode sheet are wound to form six battery cells.

[0070] [Example 4]

[0071] like Figure 19-22As shown, in this embodiment, winding is performed in an eight-out manner, that is, the electrode sheet is provided with four coating layers and five ceramic layers, two ceramic layers are provided at both ends of the coating layer, and three ceramic layers are provided between every two adjacent coating layers, respectively. The negative electrode unwinding device 3 and the positive electrode unwinding device 7 respectively unwind the negative electrode sheet and the positive electrode sheet of the above structure, wherein the laser cutting mechanism cuts the electrode sheet into four sections and cuts the two ends of the coating layer to form pole ears, the slitting mechanism cuts the four electrode sheets into eight electrode sheets, and eight winding needle units 534 are provided, and the eight positive electrode sheets and negative electrode sheets are wound to form eight battery cells.

[0072] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A winding machine, characterized in that: The invention comprises a frame, a positive electrode unwinding device, a negative electrode unwinding device, a diaphragm unwinding device and a winding device, wherein the positive electrode unwinding device comprises a positive electrode unwinding mechanism, a positive electrode laser cutting mechanism, a positive electrode slitting mechanism, a positive electrode regulating mechanism and a positive electrode cutting and gluing mechanism, and the negative electrode unwinding device comprises a negative electrode unwinding mechanism, a negative electrode laser cutting mechanism, a negative electrode slitting mechanism and a negative electrode regulating mechanism, and the positive electrode unwinding mechanism, the negative electrode unwinding mechanism, the two diaphragm unwinding devices and the winding device are installed on the frame, and the frame is provided with a positive electrode mounting rail and a negative electrode mounting rail, the positive electrode mounting rail is installed at the lower end of the frame, and the negative electrode mounting rail is installed at the upper end of the frame, and the positive electrode laser cutting mechanism, the positive electrode slitting mechanism, the positive electrode regulating mechanism and the positive electrode cutting and gluing machine are installed on the frame. The positive electrode laser cutting mechanism, the negative electrode slitting mechanism and the negative electrode adjusting mechanism are installed on the negative electrode mounting rail. The positive electrode unwinding mechanism and the negative electrode unwinding mechanism are used to unwind the electrode sheet. The positive electrode laser cutting mechanism and the negative electrode laser cutting mechanism are used to cut the electrode sheet for ear shaping and monitor the ear shape and quality in real time. The positive electrode slitting mechanism and the negative electrode slitting mechanism are used to cut the electrode sheet into the width of the electrode sheet required for a single battery cell. The positive electrode adjusting mechanism and the negative electrode adjusting mechanism are used to remove dust from the surface of the electrode sheet, correct the relative position of the electrode sheet, and adjust the tension of the electrode sheet in real time. The positive electrode cutting and gluing mechanism is used to protect the end face of the electrode sheet cutting position to prevent the burrs of the electrode sheet cutting edge from piercing the diaphragm and causing a short circuit in the battery cell.

2. The winding machine according to claim 1, characterized in that The winding device includes a winding needle assembly, a rotating disk, a turntable and a rotating assembly. Four winding needle assemblies are installed in order between the rotating disk and the turntable. The rotating disk and the turntable are rotatably arranged on the frame. The rotating assembly drives the rotating disk to rotate. The winding needle assembly includes a winding motor, a transmission unit, a fixed shaft, a connecting plate and a winding needle unit. The fixed shaft is fixed between the turntable and the rotating disk. The fixed shaft is connected to the transmission unit and the winding needle unit through the connecting plate. The transmission unit is connected to the winding needle unit. The winding motor drives the transmission unit to rotate, thereby driving the winding needle unit to rotate.

3. The winding machine according to claim 2, characterized in that: The transmission unit includes a transmission shaft and a transmission gear. The transmission gear is fixed to the transmission shaft. The transmission shaft passes through the rotating disk and the connecting plate in sequence.

4. The winding machine according to claim 2, characterized in that: The needle winding unit comprises a needle winding shaft, a needle winding and a gear sleeve. The gear sleeve is rotatably arranged on the connecting plate. The needle winding is mounted on the needle winding shaft. The gear sleeve is detachably arranged on both ends of the needle winding shaft.

5. The winding machine according to claim 2, characterized in that: The rotating assembly includes a rotating motor and a rotating gear. The rotating gear is meshed with the rotating disk, and the rotating motor drives the rotating gear to rotate.

6. The winding machine according to claim 1, characterized in that: It further includes a roller transmission speed compensation mechanism, which is arranged in the positive electrode laser cutting mechanism, the positive electrode slitting mechanism, the positive electrode adjustment mechanism, the positive electrode cutting and gluing mechanism, the negative electrode laser cutting mechanism, the negative electrode slitting mechanism, the negative electrode adjustment mechanism and the negative electrode cutting and gluing mechanism, and is used for the reverse force of the roller on the electrode sheet.

7. The winding machine according to claim 6, characterized in that The roller transmission speed compensation mechanism includes a main drive assembly, a transmission member and a roller assembly, the main drive assembly and the roller assembly are installed on a frame, the main drive assembly is connected to the roller assembly through the transmission member, the main drive assembly includes a main drive roller, a transmission shaft, a motor, a driving wheel and a mounting seat, the mounting seat is installed on the frame, the motor is installed on the mounting seat, the main drive roller and the driving wheel are fixed on the transmission shaft, the transmission member is connected to the driving wheel, and the motor drives the transmission shaft to rotate.

8. The winding machine according to claim 7, characterized in that The roller assembly includes a roller, a roller shaft and a driven wheel, the roller and the driven wheel are fixed on the roller shaft, the driven wheel is connected to the driving wheel through the transmission member, and shaft sleeves are respectively provided at both ends of the transmission shaft and the roller shaft, and the shaft sleeves are installed on the frame.

9. The winding machine according to claim 7, characterized in that: The roller transmission speed compensation mechanism includes a tensioning assembly, the tensioning assembly is in contact with the transmission member, the tensioning assembly includes a tensioning wheel and a tensioning mounting seat, the tensioning mounting seat is installed on the frame, the tensioning wheel is rotatably set on the tensioning mounting seat, and the tensioning wheel is in contact with the transmission member.

10. The winding machine according to claim 7, characterized in that The over-roll transmission speed compensation mechanism includes a clamping assembly, which is in contact with the main driving assembly. The clamping assembly includes a pressure roller, a pressure roller shaft, a pressure roller shaft mounting seat and a pressure roller cylinder. The pressure roller is fixed on the pressure roller shaft, and both ends of the pressure roller shaft are mounted on the pressure roller shaft mounting seat. The pressure roller cylinder drives the pressure roller shaft mounting seat to move.

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