Battery pole piece slitting equipment

Abstract

The utility model relates to the technical field of battery pole piece production, and discloses a battery pole piece slitting device, according to the scheme, a tension swing roller assembly is introduced in the pole piece material belt slitting process to provide a preset tension value, and when the deviation between the speed of releasing a pole piece material belt by an unwinding assembly and the speed of winding the pole piece material belt by a winding assembly is large, the tension swing roller assembly is started to provide a tension value. The tension of the pole piece material belt in the system fluctuates (deviating from the preset tension value), so that the tension swing roller assembly swings by a certain amplitude (deviating from the preset position), and at the moment, the winding assembly adjusts the winding speed and reduces the difference value between the tension of the pole piece material belt in the system and the preset tension until the tension swing roller assembly recovers to the preset position. At the moment, the tension borne by the pole piece material belt in the system is synchronously recovered to a preset value range; the tension of the pole piece material belt in the system is adjusted in real time, the tension fluctuation of the pole piece material belt in the slitting process is reduced as much as possible, the shaking of the pole piece material belt is effectively reduced, the slitting cutting precision is improved, and the product quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery electrode production technology, and in particular to a battery electrode slitting equipment. Background Technology

[0002] Electrode slitting and unwinding are crucial steps in lithium battery manufacturing. Electrode slitting refers to dividing the rolled battery electrodes into strips according to battery specifications to meet manufacturing requirements. Unwinding and rewinding involves winding the slitting electrodes to prepare them for subsequent battery assembly processes. These processes place extremely high demands on equipment precision, automation, and reliability. Currently, during electrode slitting, the difficulty in synchronizing winding and unwinding speeds (resulting in some deviation) leads to unstable tension control in the electrode strip during slitting, easily causing deformation or breakage, thus affecting production efficiency and product quality. Utility Model Content

[0003] The purpose of this invention is to provide a battery electrode slitting device to solve the problem that the electrode strip is prone to deformation or breakage due to unstable tension control during the slitting process in the prior art.

[0004] To achieve the above objectives, embodiments of this application provide a battery electrode slitting device, comprising:

[0005] Unwinding assembly for releasing the electrode strip;

[0006] Defect detection component; the defect detection component is used to detect defective electrode strips;

[0007] A label bonding assembly, wherein both the label bonding assembly and the defect detection assembly are connected to a first controller, and the label bonding assembly is used to bond a marking label to the surface of the defective electrode strip;

[0008] The tension swing roller assembly includes a tension swing rod, one end of which is rotatably mounted on the frame. The tension swing rod is provided with a guide roller group for the electrode strip to pass over. The other end of the tension swing rod is connected to a tension control mechanism provided on the frame. The tension swing rod is provided with an angle sensor for detecting the angle of the tension swing rod.

[0009] A slitting assembly for cutting the electrode strip; and

[0010] The winding assembly includes multiple winding assemblies, each used to wind up the electrode strip cut by the slitting assembly. The angle sensor and the winding assembly are both connected to a second controller.

[0011] In some embodiments of this application, the label bonding assembly includes a first roller for guiding the electrode strip around; a pressure roller rotatably mounted on the frame is provided above the first roller, the pressure roller abuts against the contact portion between the electrode strip and the first roller, and the pressure roller abuts against the electrode strip to form a labeling point; a guide plate mounted on the frame is provided on the side of the labeling point away from the moving direction of the electrode strip, and the guide plate has a transition portion near the labeling point;

[0012] The upper surface of the guide plate has a labeling tape that can move along the moving direction of the electrode strip. The labeling tape passes around the transition section and moves away from the transition section along the lower surface of the guide plate. The labeling tape is connected to a driving mechanism, which is used to drive the labeling tape to move. The first controller is connected to the driving mechanism. The marking labels are stuck to the upper surface of the labeling tape at intervals along the length direction of the labeling tape. When the marking labels move to the transition section with the labeling tape, they separate from the labeling tape. The pressure roller presses the marking labels against the surface of the electrode strip, so that the marking labels are stuck to the electrode strip.

[0013] In some embodiments of this application, the driving mechanism includes a labeling release component and a labeling rewind component, both of which are mounted on the frame;

[0014] The label release component is used to release the label tape with the label attached, and the label tape is wound up by the label winding component after passing around the transition portion from the upper surface of the guide plate;

[0015] Both the labeling release component and the labeling rewind component are connected to the first controller.

[0016] In some embodiments of this application, a pressure rod is rotatably mounted on the frame, a pressure wheel is rotatably mounted on one end of the pressure rod, and a torsion spring is provided at the other end of the pressure rod and the rotatably mounted part of the frame, so that the pressure wheel elastically presses against the surface of the electrode strip.

[0017] In some embodiments of this application, the defect detection assembly includes a first detection roller and a second detection roller mounted on the frame, and the electrode strip passes sequentially around the upper end of the first detection roller and the lower end of the second detection roller;

[0018] A first detection camera for detecting the upper surface of the electrode strip is provided above the first detection roller, and a second detection camera for detecting the lower surface of the electrode strip is provided below the second detection roller;

[0019] Both the first detection camera and the second detection camera are connected to the first controller.

[0020] In some embodiments of this application, the battery electrode slitting equipment further includes a first guide roller and a second guide roller rotatably mounted on the frame; the guide roller group includes a third guide roller and a fourth guide roller spaced apart vertically, and both the third guide roller and the fourth guide roller are rotatably mounted on the tension swing arm;

[0021] The electrode strip passes sequentially around the third guide roller, the first guide roller, the fourth guide roller, and the second guide roller;

[0022] The tension control mechanism includes a tension cylinder rotatably mounted on the frame, with one telescopic end of the tension cylinder rotatably connected to the free end of the tension swing arm.

[0023] In some embodiments of this application, the winding assembly includes a winding roller connected to a winding motor, and the winding motor is connected to the second controller.

[0024] In some embodiments of this application, the slitting assembly includes a slitting frame mounted on the frame. A first feeding roller and a second feeding roller are spaced vertically on the slitting frame. Both the first and second feeding rollers are rotatably mounted on the slitting frame. A slitting blade is coaxially mounted on the first feeding roller and is located at the middle position of the first feeding roller.

[0025] In some embodiments of this application, the battery electrode slitting equipment further includes a correction component disposed between the tension swing roller assembly and the slitting assembly;

[0026] The correction assembly includes a correction frame, which has a first correction roller and a second correction roller spaced apart along the moving direction of the electrode strip. The electrode strip passes sequentially around the lower end of the first correction roller and the upper end of the second correction roller.

[0027] The frame is equipped with a correction motor for driving the correction frame to rotate along the horizontal plane, and a correction sensor is also provided on the frame. Both the correction sensor and the correction motor are connected to a third controller.

[0028] In some embodiments of this application, the battery electrode slitting device further includes a tension detection component disposed between the slitting component and the winding component, wherein the tension detection component is matched and correspondingly configured with the winding component.

[0029] The tension detection assembly includes a tension detection roller for guiding the electrode strip around, with bearing seats mounted on the frame at both ends of the tension detection roller, and a pressure sensor provided between the bearing seats and the frame.

[0030] Compared with the prior art, the battery electrode slitting equipment of this utility model has the following advantages: This solution introduces a tension swing roller assembly to provide a preset tension value during the electrode strip slitting process. When the speed at which the unwinding assembly releases the electrode strip deviates significantly from the speed at which the winding assembly winds it up, the tension on the electrode strip in the system fluctuates (deviates from the preset tension value), causing the tension swing roller assembly to swing to a certain extent (deviates from the preset position). A second controller controls the winding assembly to adjust the winding speed of the electrode strip, reducing the difference between the tension on the electrode strip in the system and the preset tension, until the tension swing roller assembly returns to the preset position. At this point, the tension on the electrode strip in the system synchronously returns to the preset value range. This achieves real-time adjustment of the tension on the electrode strip in the system, minimizing tension fluctuations during slitting, effectively reducing electrode strip vibration, improving slitting and cutting accuracy, and ensuring product quality. Attached Figure Description

[0031] Figure 1 This is a schematic diagram showing the trend of the electrode material strip of this utility model;

[0032] Figure 2 This is a schematic diagram of the unwinding assembly structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the defect detection component of this utility model;

[0034] Figure 4 This is a schematic diagram of the label adhesive component structure of this utility model;

[0035] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0036] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the structure at point B;

[0037] Figure 7 This is a schematic diagram of the tension swing roller assembly and the correction assembly of this utility model;

[0038] Figure 8 This is a schematic diagram of the tension swing roller assembly and the correction assembly of this utility model from another perspective;

[0039] Figure 9 This is a schematic diagram of the slitting component structure of this utility model;

[0040] Figure 10 This is a schematic diagram of the slitting component of this utility model from another perspective;

[0041] Figure 11 This is a schematic diagram of the tension detection component of this utility model;

[0042] Figure 12 This is a schematic diagram of the winding assembly structure of this utility model.

[0043] In the diagram, 1 is the unwinding assembly; 11 is the unwinding roller.

[0044] 2. Defect detection assembly; 21. First detection roller; 22. Second detection roller; 23. First detection camera; 24. Second detection camera;

[0045] 3. Label bonding assembly; 31. First roller; 32. Lower pressure roller; 33. Guide plate; 331. Transition section; 34. Labeling tape; 35. Marking label; 36. Lower pressure rod;

[0046] 4. Tension swing roller assembly; 41. Tension swing rod; 42. First guide roller; 43. Second guide roller; 44. Third guide roller; 45. Fourth guide roller; 46. Tension cylinder; 47. Fifth guide roller; 48. Sixth guide roller;

[0047] 5. Slitting assembly; 51. First feeding roller; 52. Second feeding roller; 53. Slitting blade; 54. Slitting frame;

[0048] 6. Rewinding assembly; 61. Rewinding roller;

[0049] 7. Correction assembly; 71. Correction frame; 72. First correction roller; 73. Second correction roller; 74. Correction sensor;

[0050] 8. Tension detection assembly; 81. Tension detection roller; 82. Bearing housing; 83. Pressure sensor;

[0051] 9. Electrode strip; 10. Frame. Detailed Implementation

[0052] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0053] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as an obstruction of this utility model. It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0054] like Figures 1-12 As shown in the figure, this application provides a battery electrode slitting device, such as... Figure 2 As shown, the assembly includes an unwinding component 1, which includes an unwinding roller 11. The electrode strip 9 is wound around the unwinding roller 11. The unwinding roller 11 is connected to an unwinding motor, which drives the unwinding roller 11 to rotate at a preset speed to release the electrode strip 9. Figure 3 The diagram shows a schematic of the detection component structure. The defect detection component 2 is used to detect surface defects on the electrode strip 9. Figure 4 , Figure 5 , Figure 6 As shown, this is the label bonding component 3. Both the label bonding component 3 and the defect detection component 2 are connected to a first controller. The label bonding component 3 is used to bond marking labels 35 to defects on the surface of the electrode strip 9; as shown... Figure 7 , Figure 8 The diagram shows the structure of the tension swing roller assembly 4, which includes a tension swing rod 41. One end of the tension swing rod 41 is rotatably mounted on the frame 10. The tension swing rod 41 is equipped with a guide roller assembly for guiding the electrode strip 9 around. The other end of the tension swing rod 41 is connected to a tension control mechanism mounted on the frame 10. An angle sensor is provided on the tension swing rod 41 to detect the swing angle of the tension swing rod 41. Figure 9 , Figure 10 The diagram shows the structure of the slitting assembly 5, used to cut the electrode strip 9; and the winding assembly 6, which has multiple winding assemblies, each used to wind up the electrode strip 9 cut by the slitting assembly 5 (the number of winding assemblies 6 is matched to the number of electrode strips 9 cut by the slitting assembly 5). The angle sensor and the winding assembly 6 are both connected to a second controller. Figure 1The diagram shown is an overall structural diagram of the electrode strip 9 in this scheme. The unwinding assembly 1, defect detection assembly 2, label bonding assembly 3, tension roller assembly 4, slitting assembly 5, and winding assembly 6 in this scheme are arranged sequentially along the moving direction of the electrode strip 9.

[0055] In this embodiment, the unwinding roller 11 releases the electrode strip 9 at a certain speed. The electrode strip 9 passes sequentially through the defect detection component 2, the label bonding component 3, the tension swing roller component 4, and the slitting component 5 before being wound up by the winding component 6. Specifically, the defect detection component 2 is used to detect defects on the surface of the electrode strip 9 released from the unwinding component 1. If the electrode strip 9 is good (no defects), the first controller controls the label bonding component 3 to be in standby mode. If the defect detection component 2 detects defects on the surface of the electrode strip 9, the first controller controls the label bonding component 3 to work and bond labels to the surface of the defective electrode strip 9. Label 35 is used to mark defective electrode strips 9 (to facilitate processing of defective electrode strips 9 in subsequent processes). After passing through label bonding assembly 3, electrode strip 9 moves towards tension swing roller assembly 4, and passes through tension swing roller assembly 4 under the guidance of guide roller group. A preset force is applied to tension swing rod 41 by tension control mechanism. Tension swing rod 41 transmits the force to electrode strip 9 in the system through guide roller group. During the slitting process, the unwinding speed of unwinding assembly 1 and the winding speed of winding assembly 6 for slit electrode strip 9 in the system are kept consistent, thereby ensuring that the electrode strips in the system are slitting at the same speed. The tension on the strip 9 is maintained within a preset range (at this time, the tension swing arm 41 is in a preset position). If the speed at which the unwinding assembly 1 releases the electrode strip 9 and the speed at which the winding assembly 6 winds up and cuts the electrode strip 9 deviates too much, the tension on the electrode strip 9 in the system will fluctuate to some extent. If the winding speed is greater than the unwinding speed, the tension on the electrode strip 9 in the system will increase, and the tension swing arm 41 will swing slightly to one side relative to the frame 10 under the action of the tension on the electrode strip 9. If the winding speed is less than the unwinding speed, the tension on the electrode strip 9 in the system will decrease, and the tension swing arm 41 will swing slightly relative to the frame 10. When the winding speed is greater than the unwinding speed, the rotation direction of the tension swing rod 41 is opposite to that when the winding speed is less than the unwinding speed. At this time, the angle sensor on the tension swing rod 41 detects that the angle of the tension swing rod 41 fluctuates. The second sensor controls the winding assembly 6 to adjust the winding speed of the electrode strip 9, thereby reducing the speed difference between the unwinding assembly 1 and the electrode strip 9. This causes the tension swing rod 41 to swing towards the preset position, reducing the angle deviation between the tension swing rod 41 and the preset position, so that the tension on the electrode strip 9 in the system approaches the preset tension value.

[0056] In some embodiments of this application, such as Figure 4 , Figure 5 , Figure 6 As shown, the label bonding assembly 3 includes a first roller 31 (rotatably mounted on the frame 10) for the electrode strip 9 to pass around. A lower pressure roller 32, rotatably mounted on the frame 10, is provided above the first roller 31. The lower pressure roller 32 presses against the contact area between the electrode strip 9 and the first roller 31, forming a labeling point at the point where the lower pressure roller 32 presses against the electrode strip 9. Figure 5As shown, a guide plate 33 mounted on the frame 10 is provided on the side of the labeling point away from the moving direction of the electrode strip 9. The guide plate 33 has a transition portion 331 near the labeling point. The upper surface of the guide plate 33 has a labeling strip 34 that can move along the moving direction of the electrode strip 9. After the labeling strip 34 passes around the transition portion 331, it moves along the lower surface of the guide plate 33 away from the transition portion 331. Specifically, the labeling strip 34 is connected to a drive mechanism, which is used to drive the labeling strip 34 to move along the above path. The drive mechanism is connected to a first controller. When the defect detection component 2 detects that there is a defect in the electrode strip 9, the first controller controls the drive mechanism to start and drive the labeling strip 34 to move along the above path. When the defect detection component 2 detects that there is no defect in the electrode strip 9, the first controller controls the drive mechanism to stop working, so that the labeling strip 34 stops moving. In this design, the label 35 is bonded to the upper surface of the labeling tape 34 at intervals along its length. The labeling tape 34 is made of a relatively soft material, while the label 35 is made of a harder material. When the labeling tape 34 moves to the transition section 331, it moves along the lower surface of the guide plate 33 away from the pressure roller 32 under the guidance of the transition section 331 (the labeling tape 34 is driven by the drive mechanism, causing it to adhere tightly to the transition section 331 as it passes over it). Since the label 35 is harder than the labeling tape 34, it separates from the labeling tape 34 at the transition section 331 (to ensure the label...). The label 35 can be better separated from the labeling tape 34 at the transition section 331. A peeling blade can be provided at the transition section 331. The peeling blade abuts against the junction of the transition section 331 and the upper surface of the guide plate 33. When the label 35 moves to the transition section 331 with the labeling tape 34, the label 35 adhering to the upper surface of the labeling tape 34 can be easily separated from the labeling tape 34 under the action of the peeling blade. After being separated from the labeling tape 34, the label 35 continues to move forward along the initial direction and is pressed against the surface of the electrode material tape 9 that passes over the first roller 31 by the pressure roller 32, thereby achieving the adhesion of the label 35 to the surface of the electrode material tape 9 and realizing the marking of defective electrode material tape 9. In this design, the marking labels 35 are intermittently adhered to the upper surface of the labeling tape 34 (the upper surface of the labeling tape 34 is smooth, and the marking labels 35 have an adhesive on the side facing the labeling tape 34, and are adhered to the upper surface of the labeling tape 34 through the adhesive, similar to plastic tape). That is, the marking labels 35 are not a continuous whole. When there are no defects in the electrode material tape 9, the first controller controls the drive mechanism to stop working, so that the labeling tape 34 stops moving, and the marking labels 35 also stop moving. At this time, the marking labels 35 that have finally separated from the labeling tape 34 are completely adhered to the surface of the electrode material tape 9 under the action of the pressure roller 32. No new marking labels 35 will be adhered to the surface of the electrode material tape 9, so as to achieve the effect of distinguishing between normal electrode material tape 9 and defective electrode material tape 9.

[0057] In some embodiments of this application, the driving mechanism includes a labeling release component and a labeling rewind component, both of which are mounted on the frame 10. The labeling release component is used to release the labeling tape 34 with the label 35 attached, and the labeling tape 34 is wound around the transition portion 331 from the upper surface of the guide plate 33 and then wound into the labeling rewind component. Both the labeling release component and the labeling rewind component are connected to the first controller.

[0058] In this embodiment, if the defect detection component 2 detects a defect in the electrode strip 9 passing through the defect detection component 2, the first controller controls the label release component to release the label strip 34 with the label 35 attached, and controls the label winding component to wind up the label strip 34 that has detached from the label 35. That is, under the action of the label release component and the label winding component, the label strip 34 is made to move along the... Figure 5 The device moves along the path indicated by the middle arrow, and under the action of the pressure roller 32, the label 35 that has separated from the labeling tape 34 at the transition section 331 is adhered to the surface of the defective electrode strip 9. When the defect detection component 2 detects that the electrode strip 9 no longer has defects, the first controller controls the labeling release component and the labeling rewind component to stop working simultaneously. Then, after the last label 35 that has separated from the labeling tape 34 is adhered to the surface of the electrode strip 9 under the action of the pressure roller 32, no new label 35 is adhered.

[0059] To achieve more accurate marking of defective electrode strips 9, an encoder (for real-time detection of the rotation speed of the first roller 31) can be installed at the first roller 31. The distance the electrode strip 9 moves from the defect detection component 2 to the labeling point is fixed, and the diameter of the first roller 31 is also known. When the defect detection component 2 detects a defect in the electrode strip 9 passing through the defect detection component 2, the first controller calculates the time required for the defective electrode strip 9 to move to the labeling point based on the rotation speed of the first roller 31 measured by the encoder. When the defect detection component 2 detects a defect in the electrode strip 9, the first controller starts timing. When the calculated time is reached, the first controller controls the labeling and rewinding component and the labeling release component to start simultaneously, thereby achieving the affixing and marking of the label 35, making the marking of defective electrode strips 9 more accurate.

[0060] In some embodiments of this application, such as Figure 5As shown, a pressure rod 36 is rotatably mounted on the frame 10, and a pressure roller 32 is rotatably mounted on one end of the pressure rod 36. A torsion spring is provided at the other end of the pressure rod 36 and the rotatable mounting part of the frame 10. The torsion spring ensures that the pressure rod 36 drives the pressure roller 32 to always press firmly against the labeling point, and that the pressure between the pressure roller 32 and the labeling point is elastic. When there are foreign objects protruding on the surface of the electrode strip 9, the pressure roller 32 can move slightly away from the labeling point to ensure that the system can operate normally. At the same time, the pressure of the pressure roller 32 can be adjusted by adjusting the torque parameter of the torsion spring according to the actual production needs (which has good flexibility).

[0061] In some embodiments of this application, such as Figure 3 As shown, the defect detection component 2 includes a first detection roller 21 and a second detection roller 22 mounted on the frame 10. The electrode strip 9 passes sequentially around the upper end of the first detection roller 21 and the lower end of the second detection roller 22. A first detection camera 23 is located above the first detection roller 21 for detecting the upper surface of the electrode strip 9, and a second detection camera 24 is located below the second detection roller 22 for detecting the lower surface of the electrode strip 9. Both the first detection camera 23 and the second detection camera 24 are CCD cameras (CCD image sensors) used to detect the size and surface defects of the electrode strip 9. Both the first detection camera 23 and the second detection camera 24 are connected to a first controller. The first controller judges the quality of the electrode strip 9 based on the images of the electrode strip 9 acquired by the first detection camera 23 and the second detection camera 24. When the first detection camera 23 or the second detection camera 24, or both the first detection camera 23 and the second detection camera 24 detect a defect, the first controller controls the label adhesive component 3 to start and label the defective electrode strip 9.

[0062] In some embodiments of this application, such as Figure 7 As shown, the battery electrode slitting equipment also includes a first guide roller 42 and a second guide roller 43 rotatably mounted on the frame 10; the guide roller group includes a third guide roller 44 and a fourth guide roller 45 spaced vertically apart, both of which are rotatably mounted on the tension swing arm 41; a fifth guide roller 47 and a sixth guide roller 48 are also provided on the frame 10. After the electrode strip 9 is fed out from the label bonding assembly 3, it passes sequentially around the bottom end of the fifth guide roller 47, around the top end of the sixth guide roller 48, and around the third guide roller 44, the first guide roller 42, the fourth guide roller 45, and the second guide roller 43; as shown Figure 8As shown, the tension control mechanism is a tension cylinder 46 (connected to a pneumatic control system). The cylinder body of the tension cylinder 46 is rotatably mounted on the frame 10. The telescopic end of the tension cylinder 46 is rotatably connected to the free end of the tension swing rod 41 (two tension swing rods 41 are provided and are located on both sides of the third guide roller 44 and the fourth guide roller 45 respectively, for the installation of the third guide roller 44 and the fourth guide roller 45. The two tension swing rods 41 are connected as a whole by a connector). The air pressure in the tension cylinder 46 is adjusted by the pneumatic control system, so that the tension value of the electrode strip 9 in the system reaches the preset value. When the winding speed of the electrode strip 9 is less than the unwinding speed, the tension cylinder 46 will push the tension swing rod 41 to swing to one side (at this time, the telescopic end of the tension cylinder 46 is slightly extended, and the air pressure in the tension cylinder 46 is reduced), causing the tension cylinder 46 to act on the tension. When the force on the tension swing arm 41 decreases, the tension on the electrode strip 9 in the system is less than the preset value. When the winding speed of the electrode strip 9 is greater than the unwinding speed, the electrode strip 9 will force the tension swing arm 41 to swing to the other side and squeeze the tension cylinder 46, causing the air pressure in the tension cylinder 46 to increase (the telescopic end of the tension cylinder 46 will slightly contract). At this time, the tension on the electrode strip 9 in the system is greater than the preset value. The angle sensor on the tension swing arm 41 detects the change in the angle of the tension swing arm 41 and adjusts the winding speed of the winding assembly 6 through the first controller, so that the deviation between the winding speed and the unwinding speed is reduced, so that the two tend to be close or consistent. At this time, the tension swing arm 41 returns to the preset position, and the air pressure in the tension cylinder 46 also returns to the preset level, so that the tension on the electrode strip 9 approaches the preset value.

[0063] In some embodiments of this application, the winding assembly 6 includes a winding roller 61, which is connected to a winding motor. The winding motor is connected to a second controller. The second controller adjusts the rotation speed of the winding motor according to the change in the position angle of the tension swing arm 41 detected by the angle sensor, so that the winding speed of the winding assembly 6 for the electrode strip 9 is close to the unwinding speed of the unwinding assembly 1 for the electrode strip 9.

[0064] In some embodiments of this application, such as Figure 9 , Figure 10As shown, the slitting assembly 5 includes a slitting frame 54 mounted on the frame 10. A first feeding roller 51 and a second feeding roller 52 (both driven by a motor) are spaced vertically on the slitting frame 54. Both the first and second feeding rollers 51 and 52 are rotatably mounted on the slitting frame 54. A slitting blade 53 is coaxially mounted on the first feeding roller 51, positioned in the middle. When the electrode strip 9 passes between the first and second feeding rollers 51, the middle portion of the electrode strip 9 is cut, thus being cut into two separate electrode strips 9 by the slitting blade 53. Similarly, the winding assembly 6 in this design is also vertically spaced, with one electrode strip 9 being wound upwards onto the upper winding assembly 6, and the other electrode strip 9 being wound downwards onto the lower winding assembly 6.

[0065] In some embodiments of this application, such as Figure 7 , Figure 8 As shown, the battery electrode slitting equipment also includes a correction assembly 7 located between the tension swing roller assembly 4 and the slitting assembly 5; the correction assembly 7 includes a correction frame 71, which has a first correction roller 72 and a second correction roller 73 spaced apart along the moving direction of the electrode strip 9, and the electrode strip 9 passes over the lower end of the first correction roller 72 and the upper end of the second correction roller 73 in sequence; the frame 10 is equipped with a correction motor for driving the correction frame 71 to rotate along the horizontal plane, and the frame 10 is equipped with a correction sensor 74 (a CCD camera, which detects the position of the edge of the electrode strip 9 in real time by imaging), and there are two correction sensors 74, which are located on both sides of the electrode strip 9 respectively; the correction sensors 74 and the correction motor are both connected to a third controller. First, the position information of the correction sensor 74 and the electrode strip 9 is initially set. During operation, the correction sensor 74 transmits the position information of the electrode strip 9 to the third controller in real time. When the correction sensor 74 detects that the edge of the electrode strip 9 deviates significantly from the preset position, the third controller controls the correction motor to start and drives the correction frame 71 to rotate along the horizontal plane to correct the electrode strip 9, ensuring that the electrode strip 9 can be stably conveyed along the predetermined path. This effectively prevents the electrode strip 9 from deviating from the predetermined trajectory during the conveying process, thereby ensuring the smooth progress of production and the quality of the product.

[0066] In some embodiments of this application, such as Figure 11As shown, the battery electrode slitting equipment also includes a tension detection component 8 located between the slitting component 5 and the winding component 6. Each winding component 6 corresponds to one tension detection component 8. The tension detection component 8 includes a tension detection roller 81 for the electrode strip 9 to pass over. The two ends of the tension detection roller 81 are respectively connected to bearing seats 82 mounted on the frame 10 (to ensure the rotation of the tension detection roller 81). A pressure sensor 83 is provided between the bearing seat 82 and the frame 10. The pressure sensor 83 detects the pressure value of the electrode strip 9 when it passes through the tension detection roller 81 in real time, and is used to measure the tension of the electrode strip 9 in the system, so that the operator can understand the tension of the electrode strip 9 in the system in real time.

[0067] The working process of this utility model is as follows: the electrode strip 9 is released from the unwinding assembly 1 and passes sequentially through the defect detection assembly 2, the label bonding assembly 3, the tension swing roller assembly 4, the correction assembly 7, the slitting assembly 5, and the tension detection assembly 8 before finally being wound onto the winding assembly 6; when the electrode strip 9 passes through the defect detection assembly 2, the size and defects of the electrode strip 9 are detected in real time by the first detection camera 23 and the second detection camera 24, and the defective electrode strip 9 is marked by the label bonding assembly 3; the correction assembly 7 obtains the edge position of the electrode strip 9 in real time to correct the direction of the electrode strip 9; the slitting assembly 5 cuts and slits the electrode strip 9; the tension detection assembly 8 obtains the tension of the electrode strip 9 in the system in real time so that the staff can understand the tension value of the electrode strip 9 in the system in real time.

[0068] In summary, this utility model embodiment provides a battery electrode slitting device. This solution introduces a tension swing roller assembly 4 during the slitting process of the electrode strip 9 to provide a preset tension value. When the speed at which the unwinding assembly 1 releases the electrode strip 9 deviates significantly from the speed at which the winding assembly 6 winds the electrode strip 9, the tension on the electrode strip 9 in the system fluctuates (deviates from the preset tension value), causing the tension swing roller assembly 4 to swing to a certain extent (deviates from the preset position). At this time, the second controller controls the winding assembly 6 to adjust the winding speed, reducing the difference between the tension on the electrode strip 9 in the system and the preset tension, until the tension swing roller assembly 4 returns to the preset position. Simultaneously, the tension on the electrode strip 9 in the system returns to the preset value range. This achieves real-time adjustment of the tension on the electrode strip 9 in the system, minimizing tension fluctuations during slitting, effectively reducing the vibration of the electrode strip 9, improving slitting and cutting accuracy, and ensuring product quality.

[0069] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery electrode slitting device, comprising a frame (10), characterized in that, include: Unwinding assembly (1) for releasing electrode strip (9); Defect detection component (2); The defect detection component (2) is used to detect defective electrode strips (9); The label bonding component (3) and the defect detection component (2) are both connected to a first controller. The label bonding component (3) is used to bond a marking label (35) to the surface of the defective electrode strip (9). The tension swing roller assembly (4) includes a tension swing rod (41), one end of which is rotatably mounted on the frame (10). The tension swing rod (41) is provided with a guide roller group for the electrode strip (9) to pass around. The other end of the tension swing rod (41) is connected to a tension control mechanism provided on the frame (10). The tension swing rod (41) is provided with an angle sensor for detecting the angle of the tension swing rod (41). The slitting assembly (5) is used to cut the electrode strip (9); as well as The winding assembly (6) is provided in multiple ways. Each winding assembly (6) is used to wind up the electrode strip (9) cut by the slitting assembly (5). The angle sensor and the winding assembly (6) are both connected to a second controller.

2. The battery electrode slitting equipment according to claim 1, characterized in that, The label bonding assembly (3) includes a first roller (31) for passing the electrode strip (9) around; a pressure roller (32) rotatably mounted on the frame (10) is provided above the first roller (31), the pressure roller (32) abuts against the contact part between the electrode strip (9) and the first roller (31), and the pressure roller (32) abuts against the electrode strip (9) to form a labeling point; a guide plate (33) mounted on the frame (10) is provided on the side of the labeling point away from the moving direction of the electrode strip (9), and the guide plate (33) has a transition part (331) near the labeling point; The upper surface of the guide plate (33) has a labeling tape (34) that can move along the moving direction of the electrode strip (9). The labeling tape (34) passes around the transition part (331) and moves away from the transition part (331) along the lower surface of the guide plate (33). The labeling tape (34) is connected to a driving mechanism, which is used to drive the labeling tape (34) to move. The first controller is connected to the driving mechanism. The marking label (35) is bonded to the upper surface of the labeling tape (34) at intervals along the length direction of the labeling tape (34). When the marking label (35) moves to the transition part (331) with the labeling tape (34), it separates from the labeling tape (34). The pressure roller (32) presses the marking label (35) against the surface of the electrode strip (9) so that the marking label (35) is bonded to the electrode strip (9).

3. The battery electrode slitting equipment according to claim 2, characterized in that, The driving mechanism includes a labeling release component and a labeling rewind component, both of which are mounted on the frame (10). The label release member is used to release the label tape (34) with the label (35) attached, the label tape (34) being wound around the transition part (331) after passing over the upper surface of the guide plate (33); Both the labeling release component and the labeling rewind component are connected to the first controller.

4. The battery electrode slitting equipment according to claim 2, characterized in that, A pressure rod (36) is rotatably mounted on the frame (10). A pressure wheel (32) is rotatably mounted on one end of the pressure rod (36). A torsion spring is provided at the other end of the pressure rod (36) and the rotatable mounting part of the frame (10) so that the pressure wheel (32) elastically presses against the surface of the electrode strip (9).

5. The battery electrode slitting equipment according to claim 3, characterized in that, The defect detection assembly (2) includes a first detection roller (21) and a second detection roller (22) mounted on the frame (10), and the electrode strip (9) passes over the upper end of the first detection roller (21) and the lower end of the second detection roller (22) in sequence; A first detection camera (23) for detecting the upper surface of the electrode strip (9) is provided above the first detection roller (21), and a second detection camera (24) for detecting the lower surface of the electrode strip (9) is provided below the second detection roller (22). Both the first detection camera (23) and the second detection camera (24) are connected to the first controller.

6. The battery electrode slitting equipment according to claim 1, characterized in that, The battery electrode slitting equipment also includes a first guide roller (42) and a second guide roller (43) rotatably mounted on the frame (10); the guide roller group includes a third guide roller (44) and a fourth guide roller (45) arranged at intervals above and below, and the third guide roller (44) and the fourth guide roller (45) are both rotatably mounted on the tension swing arm (41); The electrode strip (9) passes sequentially around the third guide roller (44), the first guide roller (42), the fourth guide roller (45), and the second guide roller (43); The tension control mechanism includes a tension cylinder (46) rotatably mounted on the frame (10), and one end of the tension cylinder (46) is rotatably connected to the free end of the tension swing rod (41).

7. The battery electrode slitting equipment according to claim 6, characterized in that, The winding assembly (6) includes a winding roller (61), which is connected to a winding motor, and the winding motor is connected to the second controller.

8. The battery electrode slitting equipment according to claim 1, characterized in that, The slitting assembly (5) includes a slitting frame (54) mounted on the frame (10). The slitting frame (54) is provided with a first feeding roller (51) and a second feeding roller (52) spaced vertically. The first feeding roller (51) and the second feeding roller (52) are rotatably mounted on the slitting frame (54). The first feeding roller (51) is provided with a slitting knife (53) coaxially. The slitting knife (53) is located at the middle position of the first feeding roller (51).

9. The battery electrode slitting equipment according to any one of claims 1-7, characterized in that, The battery electrode slitting equipment also includes a correction component (7) disposed between the tension swing roller assembly (4) and the slitting assembly (5); The correction assembly (7) includes a correction frame (71), which has a first correction roller (72) and a second correction roller (73) spaced apart along the moving direction of the electrode strip (9). The electrode strip (9) passes around the lower end of the first correction roller (72) and the upper end of the second correction roller (73) in sequence. The frame (10) is equipped with a correction motor for driving the correction frame (71) to rotate along the horizontal plane. The frame (10) is equipped with a correction sensor (74). The correction sensor (74) and the correction motor are both connected to a third controller.

10. The battery electrode slitting equipment according to any one of claims 1-7, characterized in that, The battery electrode slitting equipment also includes a tension detection component (8) disposed between the slitting component (5) and the winding component (6), wherein the tension detection component (8) and the winding component (6) are matched and correspondingly configured. The tension detection assembly (8) includes a tension detection roller (81) for passing the electrode strip (9) around. Both ends of the tension detection roller (81) are respectively connected to bearing seats (82) mounted on the frame (10). A pressure sensor (83) is provided between the bearing seats (82) and the frame (10).

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