Lithium battery diaphragm slitting device
By designing tension adjustment and cutting mechanisms, the problem of inaccurate tension control during diaphragm cutting was solved, achieving precise diaphragm cutting and compact battery internal structure, thus improving the assembly accuracy and space utilization efficiency of lithium batteries.
Patent Information
- Application Number
- CN202423119725.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-18
AI Technical Summary
In existing technologies, lithium battery separator cutting devices have difficulty accurately controlling separator tension when operating at high speeds, which can lead to separator stretching or loosening, affecting assembly accuracy and the compactness of the battery's internal structure.
Employing a tension adjustment mechanism and a cutting mechanism, the position of the guide cylinder is adjusted by a cylinder-driven connecting rod and sliding block, and the position of the cutting component is controlled by an angle adjustment component, thereby achieving precise control of diaphragm tension and cutting accuracy.
It effectively prevents the separator from stretching or loosening during the cutting process, ensuring the assembly accuracy of the lithium battery and the compactness of the internal structure of the battery, and avoiding unreasonable space occupation.
Smart Images
Figure CN223509370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery separator processing technology, and in particular to a lithium battery separator slitting device. Background Technology
[0002] Lithium-ion batteries are a type of battery that uses metallic lithium or lithium alloys as the negative electrode material and an organic solution as the electrolyte. They are currently widely used in portable electronic products. Compared to traditional aqueous solution batteries, lithium-ion batteries have advantages such as higher specific energy, longer cycle life, and environmental friendliness, making them a battery system with great development potential. In the structure of a lithium-ion battery, the separator is one of the key internal components. Its performance determines the battery's interface structure, internal resistance, etc., directly affecting the battery's capacity, cycle life, and safety performance. Typically, the manufactured separator is a large sheet with a width of over 1 meter. However, the separator width required by customers is often smaller than the original width, so the separator needs to be cut to the required width.
[0003] However, in the existing technology, when cutting the separator, some cutting devices have difficulty accurately controlling the tension of the separator when running at high speed. When the tension control accuracy is insufficient, the separator will be stretched or relaxed during the cutting process. If the tension is too large, the separator will be overstretched, causing its size to change. This will not only affect the assembly accuracy of the separator in the lithium battery, but also lead to an uncompact internal structure or unreasonable space occupation of the battery. Therefore, a lithium battery separator cutting device is proposed. Utility Model Content
[0004] The purpose of this invention is to solve the problems existing in the prior art, which not only affect the assembly accuracy of the separator in the lithium battery, but also lead to an uncompact internal battery structure or unreasonable space occupation, and proposes a lithium battery separator cutting device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lithium battery separator slitting device, comprising a slitting frame, a feeding mechanism and a receiving mechanism, wherein a tension adjusting mechanism is provided at one end of the slitting frame, and a cutting mechanism is provided at the upper end of the slitting frame;
[0006] The tension adjustment mechanism includes two sets of support frames and a guide cylinder. A long block is fixedly installed in the middle of the two sets of support frames. A fixed cylinder is fixedly installed at the lower end of the long block. A cylinder is fixedly installed inside the fixed cylinder. A guide assembly is fixedly installed at the upper end of each of the two sets of support frames. A sliding block is slidably installed inside each of the two sets of guide assemblies. A support seat is fixedly installed at the upper end of each of the two sets of sliding blocks. A shaped protruding plate is fixedly installed at the extended end of the cylinder. Two sets of connecting rods are fixedly installed at one end of the shaped protruding plate. The protruding parts on both sides of the guide cylinder are rotatably installed inside the two sets of support seats. The other ends of the two sets of connecting rods pass through one end of each of the two sets of guide assemblies and are fixed to one end of each of the two sets of sliding blocks.
[0007] Preferably, the cutting mechanism includes two sets of fixed plates, three sets of movable cylinders are rotatably installed between the two sets of fixed plates, an angle adjustment component is fixedly installed on one side of one set of fixed plates, a long rod is rotatably installed between the two sets of fixed plates, and a cutting component is fixedly installed on the outer wall of the long rod.
[0008] Preferably, two sets of stabilizing cylinders are fixedly installed at the lower end of the long block, and guide rods are slidably installed inside the two sets of stabilizing cylinders.
[0009] Preferably, one end of each of the two sets of guide rods is fixed to one end of the irregular convex plate, and one end of each of the two sets of support frames is fixed to one end of the cutting frame plate.
[0010] Preferably, one side of the long rod passes through one side of one set of fixing plates and is fixed to the adjustment end of the angle adjustment assembly, and the lower ends of both sets of fixing plates are fixed to the upper end of the cutting frame plate.
[0011] Preferably, a stabilizing mechanism is fixedly installed at the upper end of the slitting frame plate and near both side edges.
[0012] Preferably, one end of the receiving mechanism support is fixed to one end of the cutting frame plate, and one end of the discharging mechanism support is fixed to the other end of the cutting frame plate.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0014] 1. In this utility model, by setting a tension adjustment mechanism, the position of the guide cylinder can be adjusted, thereby controlling the tension of the diaphragm and preventing the diaphragm from being stretched or loosened during the cutting process. This will not only not affect the assembly accuracy of the diaphragm in the lithium battery, but also will not cause the internal structure of the battery to be loose or the space to be occupied in an unreasonable way.
[0015] 2. In this utility model, by setting a cutting mechanism, the angle of the long rod can be adjusted by the angle adjustment component, which facilitates the control of the position of multiple cutting components, thereby enabling multiple cutting components to cut the diaphragm. Attached Figure Description
[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a lithium battery separator cutting device;
[0017] Figure 2 A perspective view of a tension adjustment mechanism in a lithium battery separator slitting device is provided for this utility model;
[0018] Figure 3 This utility model provides a partial structural schematic diagram of the tension adjustment mechanism in a lithium battery separator slitting device;
[0019] Figure 4 A side view of a lithium battery separator cutting device is provided for this utility model.
[0020] Legend: 1. Cutting frame; 11. Feeding mechanism; 12. Receiving mechanism; 13. Stabilizing mechanism; 2. Tension adjustment mechanism; 21. Support frame; 22. Long block; 23. Guide cylinder; 24. Fixed cylinder; 241. Cylinder; 25. Guide assembly; 26. Sliding block; 27. Support base; 28. Irregular convex plate; 29. Connecting rod; 210. Stabilizing cylinder; 211. Guide rod; 3. Cutting mechanism; 31. Fixed plate; 32. Movable cylinder; 33. Angle adjustment assembly; 34. Long rod; 35. Cutting assembly. Detailed Implementation
[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0023] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a lithium battery separator slitting device, including a slitting frame plate 1, a feeding mechanism 11 and a receiving mechanism 12. One end of the slitting frame plate 1 is provided with a tension adjusting mechanism 2, and the upper end of the slitting frame plate 1 is provided with a cutting mechanism 3.
[0024] The tension adjustment mechanism 2 includes two sets of support frames 21 and a guide cylinder 23. A long block 22 is fixedly installed in the middle of the two sets of support frames 21. A fixed cylinder 24 is fixedly installed at the lower end of the long block 22. A cylinder 241 is fixedly installed inside the fixed cylinder 24. Guide components 25 are fixedly installed at the upper ends of both sets of support frames 21. Sliding blocks 26 are slidably installed inside both sets of guide components 25. Support seats 27 are fixedly installed at the upper ends of both sets of sliding blocks 26. A shaped protruding plate 28 is fixedly installed at the extended end of the cylinder 241. Two sets of connecting rods 29 are fixedly installed at one end of the shaped protruding plate 28. The protruding parts on both sides of the guide cylinder 23 are rotatably installed inside the two sets of support seats 27. The other end of the connecting rod 29 passes through one end of each of the two guide components 25 and is fixed to one end of each of the two sliding blocks 26. Two sets of stabilizing cylinders 210 are fixedly installed at the lower end of the long block 22. Guide rods 211 are slidably installed inside each of the two sets of stabilizing cylinders 210. One end of each of the two sets of guide rods 211 is fixed to one end of the irregular protruding plate 28. One end of each of the two sets of support frames 21 is fixed to one end of the cutting frame plate 1. Stabilizing mechanisms 13 are fixedly installed at the upper end of the cutting frame plate 1 and near the two side edges. One end of the support of the receiving mechanism 12 is fixed to one end of the cutting frame plate 1, and one end of the support of the discharging mechanism 11 is fixed to the other end of the cutting frame plate 1.
[0025] The specific settings and functions of this embodiment are described below. When the cylinder 241 is started, the extended end of the cylinder 241 drives the two sets of connecting rods 29 to move through the irregular protrusion 28. The two sets of connecting rods 29 slide at one end of the two sets of guide components 25 respectively. At the same time, the two sets of connecting rods 29 drive the two sets of sliding blocks 26 to move. The two sets of sliding blocks 26 slide inside the two sets of guide components 25 respectively. The two sets of sliding blocks 26 also drive the two sets of support seats 27 to move together. The two sets of support seats 27 drive the guide cylinder 23 to move left and right together. This allows the position of the guide cylinder 23 to be adjusted, thereby controlling the tension of the separator and preventing the separator from being stretched or loosened during the cutting process. This will not only not affect the assembly accuracy of the separator in the lithium battery, but also will not cause the internal structure of the battery to be non-compact or the space occupied to be unreasonable.
[0026] With the cooperation of two sets of guide components 25 and two sets of sliding blocks 26, the two sets of sliding blocks 26 slide inside the two sets of guide components 25 respectively, which guides the two sets of sliding blocks 26 and increases the stability of the two sets of sliding blocks 26 when they move.
[0027] When the irregular convex plate 28 moves, it will also drive the two sets of guide rods 211 to move left and right together. The two sets of guide rods 211 slide inside the two sets of stabilizing cylinders 210 respectively, which can increase the stability of the irregular convex plate 28 when it moves and prevent the irregular convex plate 28 from deviating when it moves, thus affecting the adjustment of the guide cylinder 23.
[0028] The two sets of stabilizing mechanisms 13 can block the diaphragm and prevent the lower surface of the diaphragm from contacting the two sides of the slitting frame plate 1 during winding, thus preventing the two sides of the slitting frame plate 1 from damaging the diaphragm.
[0029] Example 2: Figure 1 and Figure 4 As shown, the cutting mechanism 3 includes two sets of fixed plates 31. Three sets of movable cylinders 32 are rotatably installed in the middle of the two sets of fixed plates 31. An angle adjustment component 33 is fixedly installed on one side of one set of fixed plates 31. A long rod 34 is rotatably installed in the middle of the two sets of fixed plates 31. A cutting component 35 is fixedly installed on the outer wall of the long rod 34. One side of the long rod 34 passes through one side of one set of fixed plates 31 and is fixed to the adjustment end of the angle adjustment component 33. The lower ends of both sets of fixed plates 31 are fixed to the upper end of the slitting frame plate 1.
[0030] The overall effect of this embodiment is that by rotating and installing a long rod 34 in the middle of the fixed plate 31, and installing multiple sets of cutting components 35 at equal intervals on the outer wall of the long rod 34, and then adjusting the angle of the long rod 34 by the angle adjustment component 33, the position of the multiple sets of cutting components 35 can be easily controlled, thereby making it convenient for the multiple sets of cutting components 35 to cut the diaphragm.
[0031] The three sets of movable cylinders 32 are all rotatably installed between the two sets of fixed plates 31, and the upper surfaces of the three sets of movable cylinders 32 are in contact with the lower surface of the diaphragm, which facilitates smoother winding of the diaphragm and also plays an auxiliary role in the multiple sets of cutting components 35.
[0032] The operating method and working principle of this device are as follows: First, the diaphragm roll is rotated and installed onto the feeding mechanism 11, and then the receiving roll is rotated and installed onto the receiving mechanism 12. One end of the diaphragm is fixed to the surface of the receiving roll of the receiving mechanism 12, and the lower surface of the diaphragm is in contact with the upper surfaces of the two sets of stabilizing mechanisms 13 and the three sets of movable cylinders 32. Then, the tension of the diaphragm is adjusted, and the cylinder 241 is started. The extended end of the cylinder 241 drives the two sets of connecting rods 29 to move through the irregular protrusion 28. The two sets of connecting rods 29 slide at one end of the two sets of guide components 25, and at the same time, the two sets of connecting rods 29 drive the two sets of sliding blocks 26 to move. The two sets of sliding blocks 26 slide inside the two sets of guide components 25, and the two sets of... The sliding block 26 also drives the two sets of support seats 27 to move together, and the two sets of support seats 27 drive the guide cylinder 23 to move left and right together, thereby adjusting the position of the guide cylinder 23. Finally, according to the cutting size of the diaphragm, the corresponding cutting components 35 are installed on the surface of the long rod 34, and the angle of the long rod 34 is adjusted by the angle adjustment component 33. The long rod 34 drives the multiple sets of cutting components 35 to rotate, which facilitates the adjustment of the position of the multiple sets of cutting components 35. When the receiving mechanism 12 is running, it drives the receiving cylinder to rotate, which facilitates the receiving cylinder to wind up the diaphragm. During this process, the diaphragm will be pulled to move, and the diaphragm will contact the multiple sets of cutting components 35, so that the multiple sets of cutting components 35 can cut the diaphragm.
[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A lithium battery separator slitting device, comprising a slitting rack (1), a feeding mechanism (11), and a receiving mechanism (12), characterized in that: One end of the slitting frame plate (1) is provided with a tension adjustment mechanism (2), and the upper end of the slitting frame plate (1) is provided with a cutting mechanism (3); The tension adjustment mechanism (2) includes two sets of support frames (21) and a guide cylinder (23). A long block (22) is fixedly installed in the middle of the two sets of support frames (21). A fixed cylinder (24) is fixedly installed at the lower end of the long block (22). A cylinder (241) is fixedly installed inside the fixed cylinder (24). A guide assembly (25) is fixedly installed at the upper end of each of the two sets of support frames (21). A sliding block (26) is slidably installed inside each of the two sets of guide assemblies (25). The upper end of each sliding block (26) is fixedly mounted with a support seat (27). The extended end of the cylinder (241) is fixedly mounted with a shaped protrusion plate (28). One end of the shaped protrusion plate (28) is fixedly mounted with two sets of connecting rods (29). The protruding parts on both sides of the guide cylinder (23) are rotatably mounted inside the two sets of support seats (27). The other ends of the two sets of connecting rods (29) pass through one end of the two sets of guide components (25) respectively, and are fixed to one end of the two sets of sliding blocks (26) respectively.
2. The lithium battery separator slitting device according to claim 1, characterized in that: The cutting mechanism (3) includes two sets of fixed plates (31), three sets of movable cylinders (32) are rotatably installed in the middle of the two sets of fixed plates (31), an angle adjustment component (33) is fixedly installed on one side of one set of fixed plates (31), a long rod (34) is rotatably installed in the middle of the two sets of fixed plates (31), and a cutting component (35) is fixedly installed on the outer wall of the long rod (34).
3. The lithium battery separator slitting device according to claim 1, characterized in that: Two sets of stabilizing cylinders (210) are fixedly installed at the lower end of the long block (22), and guide rods (211) are slidably installed inside the two sets of stabilizing cylinders (210).
4. The lithium battery separator slitting device according to claim 3, characterized in that: One end of each of the two sets of guide rods (211) is fixed to one end of the irregular protrusion plate (28), and one end of each of the two sets of support frames (21) is fixed to one end of the cutting frame plate (1).
5. A lithium battery separator slitting device according to claim 2, characterized in that: One side of the long rod (34) passes through one side of one set of fixing plates (31) and is fixed to the adjustment end of the angle adjustment assembly (33). The lower ends of both sets of fixing plates (31) are fixed to the upper end of the cutting frame plate (1).
6. A lithium battery separator slitting device according to claim 1, characterized in that: Stabilizing mechanisms (13) are fixedly installed at the upper end of the cutting frame plate (1) and near the two side edges.
7. A lithium battery separator slitting device according to claim 6, characterized in that: One end of the receiving mechanism (12) support is fixed to one end of the cutting frame plate (1), and one end of the feeding mechanism (11) support is fixed to the other end of the cutting frame plate (1).