Battery winding machine with automatic feeding mechanism

Abstract

The utility model discloses a battery winding machine with an automatic feeding mechanism, which relates to the technical field of battery bare core winding and comprises a workbench, a fixing plate is fixedly connected to the top of the workbench, a winding machine head is mounted at the top of the workbench, three conveying plates are fixedly connected to the front side of the fixing plate, and the conveying plates are fixedly connected to the rear side of the workbench. The front face of the fixing plate is rotationally connected with three sets of driving rollers, the number of each set of driving rollers is two, and the three sets of driving rollers are located on the tops of the three conveying plates correspondingly. When the deviation rectifying device is used, the first deviation rectifying roller and the second deviation rectifying roller coaxially rotate and have different rotating speeds, so that forward deviation rectifying or backward deviation rectifying of a negative plate, a diaphragm and a positive plate can be realized, and transverse shearing force borne by the negative plate, the diaphragm and the positive plate in the deviation rectifying operation process can be reduced; damage to the negative plate, the diaphragm and the positive plate in the deviation rectifying process is reduced, and the yield of winding processing of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery bare core winding technology, and in particular to a battery winding machine with an automatic feeding mechanism. Background Technology

[0002] Battery cells are produced by precisely bonding the positive electrode, negative electrode, and separator together in parallel and then winding them into a roll. Based on the shape of the wound battery core, they can be divided into square cells and round cells.

[0003] During the winding process of bare battery cells, the degree of overlap between the positive electrode sheet, negative electrode sheet, and separator directly affects the production quality and yield of the bare battery cells. Therefore, the key to ensuring that the positive electrode sheet, negative electrode sheet, and separator have the required degree of overlap is to effectively prevent them from deviating when feeding them during the winding process.

[0004] Chinese invention patent application CN202110042975.0 describes a lithium battery winding machine. It uses a threaded straightening wheel to push the separator, positive electrode, and negative electrode to the outside during contact with the separator and positive electrode sheet, ultimately bringing them into contact with a straightening baffle. This aligns the edges of the separator, negative electrode, and positive electrode sheet with the straightening baffle, achieving the desired straightening result. This ensures edge alignment of the wound battery, resulting in a good winding effect and improved production quality. However, in this device, when the straightening wheel pushes the negative electrode sheet, separator, and positive electrode sheet towards the straightening baffle, their movement direction is perpendicular to their travel direction. This causes them to be subjected to shearing forces, making them prone to damage and severely reducing the yield of the winding process. Utility Model Content

[0005] The purpose of this application is to provide a battery winding machine with an automatic feeding mechanism to solve the problem mentioned in the background art that when the negative electrode sheet, separator and positive electrode sheet are corrected, the three parts are subjected to shear force and are easily damaged, which seriously reduces the yield of the winding process.

[0006] To achieve the above objectives, this application provides the following technical solution: a battery winding machine with an automatic feeding mechanism, comprising a worktable, a fixed plate fixedly connected to the top of the worktable, a winding head mounted on the top of the worktable, three conveyor plates fixedly connected to the front of the fixed plate, three sets of drive rollers rotatably connected to the front of the fixed plate, each set containing two drive rollers, the three sets of drive rollers being located on the top of the three conveyor plates respectively, three sets of ultrasonic sensors fixedly connected to the front of the fixed plate, the three sets of ultrasonic sensors being aligned with the top of the three conveyor plates respectively, and three correction components disposed on the front of the fixed plate, the three correction components being located on the three conveyor plates respectively, each correction component including a first correction roller and a second correction roller, the correction component also including a rotating shaft rotatably connected to the front of the fixed plate, the first correction roller being fixedly sleeved on the outer circumferential surface of the rotating shaft, the second correction roller being rotatably sleeved on the outer circumferential surface of the rotating shaft, the rear end of the rotating shaft passing through the fixed plate and connected to a first motor, the first correction roller and the second correction roller rotating at different speeds.

[0007] Preferably, the correction assembly further includes a drive unit for driving the second correction roller to rotate. The advantage of this configuration is that the correction function can be turned on or off by controlling whether the second correction roller rotates.

[0008] Preferably, the drive unit includes a rotating tube rotatably sleeved on the outer circumferential surface of the rotating shaft. A first drive wheel is fixedly sleeved on the outer circumferential surface of the rotating tube. The drive unit also includes a second motor disposed on the front side of the fixed plate. A first round rod is fixedly connected to the output end of the second motor. A second drive wheel is fixedly sleeved on the outer circumferential surface of the first round rod. The outer circumferential surface of the second drive wheel abuts against the outer circumferential surface of the first drive wheel. The diameters of the first drive wheel and the second drive wheel are different. The advantage of this arrangement is that the second drive wheel is driven to rotate by the second motor and the first round rod. The second drive wheel drives the second correction roller to rotate through the first drive wheel and the rotating tube. At the same time, the first correction roller and the second correction roller can rotate coaxially at different speeds. This allows for convenient and reliable correction of the moving negative electrode sheet, separator, and positive electrode sheet. Compared with directly pushing the negative electrode sheet, separator, and positive electrode sheet laterally for correction, the correction method of this device causes less damage to the negative electrode sheet, separator, and positive electrode sheet, thereby effectively reducing the scrap rate of the winding process and greatly improving the reliability of the device.

[0009] Preferably, the drive unit further includes two hydraulic cylinders fixedly connected to the front of the fixed plate. A horizontal plate is fixedly connected to the bottom of the two hydraulic cylinders, and a vertical plate is fixedly connected to the front end of the horizontal plate. A third motor is fixedly connected to the back of the vertical plate. The output shaft of the third motor passes through the vertical plate and is fixedly connected to a turntable. There are multiple second motors, first round rods, and second drive wheels. Multiple second motors are fixedly connected in a ring to the back of the turntable. The output shafts of multiple second motors pass through the turntable and are fixedly connected to the first round rods. The multiple second drive wheels have different diameters. The advantage of this arrangement is that the rotation speed of the second correction roller can be changed, thereby adjusting the correction speed according to the degree of offset of the negative electrode sheet, diaphragm, and positive electrode sheet, and thus improving the efficiency of the correction operation while ensuring the accuracy of the correction operation.

[0010] Preferably, a portion of the second drive wheels has a diameter smaller than that of the first drive wheel, while another portion has a diameter larger than that of the first drive wheel. The advantage of this arrangement is that the forward or backward correction of the negative electrode sheet, diaphragm, and positive electrode sheet can be achieved by controlling the rotation speed of the second correction roller to be greater than or less than that of the first correction roller, thereby further improving the efficiency of the correction operation.

[0011] In summary, the technical effects and advantages of this utility model are as follows:

[0012] 1. In this utility model, by setting the first and second correction rollers to rotate coaxially and with different speeds, it is possible to correct the negative electrode sheet, diaphragm and positive electrode sheet forward or backward, and reduce the lateral shear force on the negative electrode sheet, diaphragm and positive electrode sheet during the correction operation, reduce the damage to the negative electrode sheet, diaphragm and positive electrode sheet during the correction process, and improve the yield of the winding process of the device.

[0013] 2. In this utility model, a turntable drives multiple second drive wheels to rotate so that second drive wheels of different diameters can respectively contact the first drive wheel so that the first drive wheel has different rotation speeds. This allows for flexible adjustment of the rotation speed of the second correction roller, thereby adjusting the correction speed according to the degree of offset of the negative electrode sheet, diaphragm and positive electrode sheet, and thus improving the efficiency of the correction operation while ensuring the accuracy of the correction operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the first structure of a battery winding machine with an automatic feeding mechanism according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the second structure of a battery winding machine with an automatic feeding mechanism according to an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the first structure of the correction component in an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the second structure of the correction component in an embodiment of this application;

[0019] Figure 5 Examples of embodiments in this application Figure 3 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Workbench; 2. Fixed plate; 3. Winding head; 4. Conveyor plate; 5. Drive roller; 6. Ultrasonic sensor; 7. Correction assembly; 71. First correction roller; 72. Second correction roller; 73. Rotary shaft; 74. Drive unit; 741. Rotary tube; 742. First drive wheel; 743. Second motor; 744. First round rod; 745. Second drive wheel; 746. Hydraulic cylinder; 747. Horizontal plate; 748. Vertical plate; 749. Third motor; 7410. Turntable. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] refer to Figure 1-5The battery winding machine shown includes a worktable 1, a fixed plate 2 fixedly connected to the top of the worktable 1, a winding head 3 mounted on the top of the worktable 1, three conveyor plates 4 fixedly connected to the front of the fixed plate 2, and three sets of drive rollers 5 rotatably connected to the front of the fixed plate 2, with two drive rollers in each set. The three sets of drive rollers 5 are respectively located on the top of the three conveyor plates 4. Three sets of ultrasonic sensors 6 are fixedly connected to the front of the fixed plate 2, and the three sets of ultrasonic sensors 6 are respectively aligned with the top of the three conveyor plates 4. The machine also includes three correction components 7 located on the front of the fixed plate 2, and the correction components 7 include a first correction roller 71 and a second correction roller 72. The correction components 7 also include a rotating shaft 73 rotatably connected to the front of the fixed plate 2. The first correction roller 71 is fixedly sleeved on the outer circumferential surface of the rotating shaft 73, and the second correction roller 72 is rotatably sleeved on the outer circumferential surface of the rotating shaft 73. The rear end of the rotating shaft 73 passes through the fixed plate 2 and is connected to a first motor. The first correction roller 71 and the second correction roller 72 rotate at different speeds.

[0024] refer to Figure 1-5 The correction assembly 7 also includes a drive unit 74 for driving the second correction roller 72 to rotate.

[0025] Specifically, the correction function can be turned on or off by controlling whether the second correction roller 72 rotates.

[0026] Example 2

[0027] According to Example 1, please refer to Figure 3-5 The drive unit 74 includes a rotating tube 741 rotatably sleeved on the outer circumferential surface of the rotating shaft 73. A first drive wheel 742 is fixedly sleeved on the outer circumferential surface of the rotating tube 741. The drive unit 74 also includes a second motor 743 disposed on the front side of the fixed plate 2. A first round rod 744 is fixedly connected to the output end of the second motor 743. A second drive wheel 745 is fixedly sleeved on the outer circumferential surface of the first round rod 744. The outer circumferential surface of the second drive wheel 745 abuts against the outer circumferential surface of the first drive wheel 742. The diameters of the first drive wheel 742 and the second drive wheel 745 are different.

[0028] Specifically, the second drive wheel 745 is driven to rotate by the second motor 743 and the first round rod 744. The second drive wheel 745 drives the second correction roller 72 to rotate through the first drive wheel 742 and the rotating tube 741. At the same time, the first correction roller 71 and the second correction roller 72 can rotate coaxially at different speeds, so as to conveniently and reliably correct the negative electrode sheet, diaphragm and positive electrode sheet in motion. Compared with directly pushing the negative electrode sheet, diaphragm and positive electrode sheet to move for correction, the correction method of this device causes less damage to the negative electrode sheet, diaphragm and positive electrode sheet, thereby effectively reducing the scrap rate of the winding process and greatly improving the reliability of the device.

[0029] Example 3

[0030] Please refer to Example 1 or 2. Figure 3-5 The drive unit 74 also includes two hydraulic cylinders 746 fixedly connected to the front of the fixed plate 2. A horizontal plate 747 is fixedly connected to the bottom of the two hydraulic cylinders 746. A vertical plate 748 is fixedly connected to the front end of the horizontal plate 747. A third motor 749 is fixedly connected to the back of the vertical plate 748. The output shaft of the third motor 749 passes through the vertical plate 748 and is fixedly connected to a turntable 7410. There are multiple second motors 743, first round rods 744, and second drive wheels 745. Multiple second motors 743 are fixedly connected in a ring to the back of the turntable 7410. The output shafts of multiple second motors 743 pass through the turntable 7410 and are fixedly connected to the first round rods 744. The multiple second drive wheels 745 have different diameters.

[0031] Specifically, the rotation speed of the second correction roller 72 can be changed, thereby adjusting the correction speed according to the degree of offset of the negative electrode, diaphragm and positive electrode, and thus improving the efficiency of the correction operation while ensuring the accuracy of the correction operation.

[0032] refer to Figure 4 Among the multiple second drive wheels 745, some have a diameter smaller than that of the first drive wheel 742, while the other part of the second drive wheels 745 have a diameter larger than that of the first drive wheel 742.

[0033] Specifically, by controlling the rotation speed of the second correction roller 72 to be greater than or less than the rotation speed of the first correction roller 71, the negative electrode sheet, diaphragm, and positive electrode sheet can be corrected forward or backward, further improving the efficiency of the correction operation.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery winding machine with automatic feeding mechanism, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected with a fixed plate (2), the top of the workbench (1) is provided with a winding head (3), the front of the fixed plate (2) is fixedly connected with three conveying plates (4), the front of the fixed plate (2) is rotatably connected with three groups of driving rollers (5), the number of driving rollers (5) in each group is two, three groups of driving rollers (5) are respectively located on the top of the three conveying plates (4), the front of the fixed plate (2) is fixedly connected with three groups of ultrasonic sensors (6), three groups of ultrasonic sensors (6) are respectively aligned with the top of the three conveying plates (4), and three deviation correction assemblies (7) are arranged on the front of the fixed plate (2), three deviation correction assemblies (7) are respectively located on the three conveying plates (4), the deviation correction assembly (7) comprises a first deviation correction roller (71) and a second deviation correction roller (72), the deviation correction assembly (7) further comprises a rotating shaft (73) rotatably connected to the front of the fixed plate (2), the first deviation correction roller (71) is fixedly sleeved on the outer circumference of the rotating shaft (73), the second deviation correction roller (72) is rotatably sleeved on the outer circumference of the rotating shaft (73), and the rear end of the rotating shaft (73) penetrates through the fixed plate (2) and is connected with a first motor.

2. The battery winding machine with automatic feeding mechanism according to claim 1, characterized in that: The deviation correction assembly (7) further comprises a driving unit (74) for driving the second deviation correction roller (72) to rotate.

3. The battery winding machine with automatic feeding mechanism according to claim 2, characterized in that: The driving unit (74) comprises a rotating sleeve (741) rotatably sleeved on the outer circumference of the rotating shaft (73), a first driving wheel (742) is fixedly sleeved on the outer circumference of the rotating sleeve (741), the driving unit (74) further comprises a second motor (743) arranged on the front of the fixed plate (2), the output end of the second motor (743) is fixedly connected with a first circular rod (744), the outer circumference of the first circular rod (744) is fixedly sleeved with a second driving wheel (745), the outer circumference of the second driving wheel (745) is in abutment with the outer circumference of the first driving wheel (742), and the diameters of the first driving wheel (742) and the second driving wheel (745) are different.

4. The battery winding machine with automatic feeding mechanism according to claim 3, characterized in that: The driving unit (74) further comprises two hydraulic cylinders (746) fixedly connected to the front of the fixed plate (2), the bottom ends of the two hydraulic cylinders (746) are fixedly connected with a horizontal plate (747), the front end of the horizontal plate (747) is fixedly connected with a vertical plate (748), the back of the vertical plate (748) is fixedly connected with a third motor (749), the output shaft of the third motor (749) penetrates through the vertical plate (748) and is fixedly connected with a rotating disc (7410), the number of the second motor (743), the first circular rod (744) and the second driving wheel (745) is multiple, the second motor (743) is annularly fixedly connected to the back of the rotating disc (7410), the output shaft of the second motor (743) penetrates through the rotating disc (7410) and is fixedly connected with the first circular rod (744), and the diameters of the second driving wheels (745) are different.

5. The battery winding machine with automatic feeding mechanism according to claim 4, characterized in that: Some of the second driving wheels (745) have a diameter smaller than the diameter of the first driving wheels (742), and some of the second driving wheels (745) have a diameter larger than the diameter of the first driving wheels (742).

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