Battery pole piece cutting device and apparatus
By combining a through-cut groove and an air blowing/suction assembly in the electrode cutting device, the problem of poor dust and waste removal during electrode cutting is solved, achieving efficient dust removal and high-precision cutting, avoiding the defects of laser cutting, and improving the production environment and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU LONGHE TECHNOLOGY CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-03
Smart Images
Figure CN224444705U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lithium battery manufacturing technology, and in particular to a battery electrode cutting device and equipment. Background Technology
[0002] During battery manufacturing, the electrode sheets need to be cut to form the required size and structure. The electrode sheets are usually cut by upper and lower cutting blades, which generates a large amount of metal dust and waste from the cut tabs and tab wires.
[0003] However, the dust and debris generated during electrode cutting in the relevant technologies are not effective. These dust and debris tend to adhere to the electrode surface, affecting the quality of subsequent processes and polluting the production environment. Utility Model Content
[0004] To address or partially address the problems existing in related technologies, this application provides a battery electrode cutting device and equipment that can improve the dust removal effect on dust and waste.
[0005] The first aspect of this application provides a battery electrode cutting device, including: a first cutter, a second cutter, and a driving component;
[0006] The first cutter has a groove that extends through the first cutter, and the side wall of the groove has a first air blowing hole, which is used to communicate with the air blowing assembly;
[0007] The driving component is used to drive the first cutter and / or the second cutter to move so that the first cutter and the second cutter move closer to each other or further away from each other. When the first cutter and the second cutter move closer to each other, one end of the second cutter can extend into the blade groove. The end of the blade groove away from the second cutter is used to communicate with the suction component.
[0008] Furthermore, the shape of the second cutter matches the shape of the groove, and when the second cutter extends into the groove, the sidewall of the second cutter fits against the sidewall of the groove.
[0009] Furthermore, the second cutter has a second air blowing hole at one end that extends into the cutter groove, and the second air blowing hole is used to communicate with the air blowing assembly.
[0010] Furthermore, the driving component is connected to the second cutter, and the driving component is used to drive the second cutter to move toward or away from the first cutter.
[0011] Furthermore, the aforementioned battery electrode cutting device also includes a bracket, a first mounting base, and a second mounting base. The driving component and the first mounting base are both disposed on the bracket. The first cutter is disposed on the first mounting base, and the second cutter is disposed on the second mounting base. The second mounting base is connected to the driving component.
[0012] Furthermore, the aforementioned battery electrode cutting device also includes a pressing component and a pressing drive component connected to the pressing component. The pressing drive component is disposed on the bracket and is used to drive the pressing component to move toward or away from the first cutter. The pressing component is capable of clamping the electrode with the first cutter.
[0013] Furthermore, the pressing component is made of rubber or polyurethane material.
[0014] Furthermore, the aforementioned battery electrode cutting device also includes a guide post, one end of which is connected to the first mounting base, and the second mounting base is slidably connected to the guide post.
[0015] Furthermore, the drive component includes a cylinder or a motor.
[0016] A second aspect of this application provides a battery electrode cutting device, comprising: an air blowing assembly, an air suction assembly, and a battery electrode cutting apparatus as described in any of the preceding claims.
[0017] The technical solution provided in this application may include the following beneficial results: A groove penetrating the first cutter is provided, and a first air blowing hole is provided on the side wall of the groove. The first air blowing hole is used to communicate with an air blowing assembly. The end of the groove opposite to the second cutter is used to communicate with an air suction assembly. When cutting the electrode sheet, the first cutter and the second cutter approach each other, and one end of the second cutter extends into the groove, thereby cutting the electrode sheet between the first cutter and the second cutter. The dust and debris generated during cutting are blown out by the air blowing hole, and then sucked out of the groove by the air suction assembly for timely collection. This effectively avoids dust and debris generated during the cutting process adhering to the surface of the electrode sheet, affecting the quality of subsequent processes, and also avoids dust and debris being raised and polluting the production environment, thereby improving the dust removal effect.
[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0019] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.
[0020] Figure 1This is a schematic diagram of the structure of the battery electrode cutting device shown in the embodiments of this application;
[0021] Figure 2 This is another schematic diagram of the battery electrode cutting device shown in the embodiments of this application;
[0022] Figure 3 This is another schematic diagram of the battery electrode cutting device shown in the embodiments of this application;
[0023] Figure 4 This is a schematic diagram of the structure of the first and second cutters shown in the embodiments of this application;
[0024] Figure 5 This is a side view schematic diagram of the first and second cutters shown in the embodiments of this application;
[0025] Figure 6 This is a top view schematic diagram of the first and second cutters shown in the embodiments of this application.
[0026] Figure label:
[0027] 1-First cutter, 11-Cutter groove, 12-First air blowing hole, 2-Second cutter, 21-Second air blowing hole, 3-Drive component, 4-Bracket, 5-First mounting base, 6-Second mounting base, 7-Pressure component, 8-Pressure drive component, 9-Pressure connecting frame, 10-Guide post, 20-Discharge port, 30-Follow-up mounting block. Detailed Implementation
[0028] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.
[0029] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0030] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 a limitation of this application.
[0031] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0032] In related technologies, there is a problem with the poor dust and debris removal effect generated during electrode cutting. This dust and debris easily adhere to the surface of the electrode, affecting the quality of subsequent processes and polluting the production environment.
[0033] To address the aforementioned issues, this application provides a battery electrode cutting device and equipment that can improve the dust removal effect on dust and debris.
[0034] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.
[0035] like Figures 1 to 6 As shown in the figure, this application provides a battery electrode cutting device, including a first cutter 1, a second cutter 2 and a driving component 3.
[0036] The first cutting blade 1 has a groove 11 that penetrates the first cutting blade 1. The side wall of the groove 11 has a first air blowing hole 12. The first air blowing hole 12 is used to communicate with the air blowing assembly. The air blowing assembly is used to supply gas to the first air blowing hole 12, so that the first air blowing hole 12 blows air into the groove 11.
[0037] The driving component 3 is used to drive the first cutter 1 and / or the second cutter 2 to move so that the first cutter 1 and the second cutter 2 move closer to each other or further away from each other. When the first cutter 1 and the second cutter 2 move closer to each other, one end of the second cutter 2 can extend into the cutter groove 11. The end of the cutter groove 11 away from the second cutter 2 is used to communicate with the air suction component. The air suction component is used to suck air into the cutter groove 11 to generate negative pressure in the cutter groove 11.
[0038] Based on the above solution, a groove 11 penetrating the first cutter 1 is provided, and a first air blowing hole 12 is provided on the side wall of the groove 11. The first air blowing hole 12 is used to communicate with the air blowing component. The end of the groove 11 away from the second cutter 2 is used to communicate with the air suction component. When the electrode sheet is cut, the first cutter 1 and the second cutter 2 approach each other, and one end of the second cutter 2 extends into the groove 11, thereby cutting the electrode sheet between the first cutter 1 and the second cutter 2. The dust and waste generated during the cutting are blown out by the air blowing hole, and then the air suction component sucks the dust and waste from the groove 11 for timely collection. This can effectively prevent the dust and waste generated during the cutting process from adhering to the surface of the electrode sheet, affecting the quality of subsequent processes, and also prevent the dust and waste from being raised and polluting the production environment, thereby improving the dust removal effect.
[0039] Specifically, the driving component 3 can drive only the first cutter 1 to move while the second cutter 2 remains stationary, or the driving component 3 can drive only the second cutter 2 to move while the first cutter 1 remains stationary, or the driving component 3 can drive both the first cutter 1 and the second cutter 2 to move simultaneously. The suction component can have a vacuum waste collection mechanism, where dust and debris in the cutter groove 11 are collected by the vacuum waste collection mechanism through negative pressure; the blowing component can have a fan, which supplies air to the first blowing hole 12; the suction component and the blowing component work together to blow air into the cutter groove 11 and the cutting surface of the tab, and can also quickly suck away the blown-down debris, improving the waste handling capacity. The driving component 3 can use common driving devices such as cylinders or motors.
[0040] In related technologies, the cutting blade structure is prone to problems such as blade breakage and wear, which affects cutting accuracy and efficiency. However, in this embodiment, by setting a groove 11 in the first cutting blade 1, one end of the second cutting blade 2 can extend into the groove 11 during cutting. This structure is less prone to blade breakage and wear, thereby improving cutting accuracy and efficiency.
[0041] Furthermore, in related technologies, when cutting multiple tabs on electrode sheets, the bottom tabs are prone to being cut incompletely. This results in the cut surface potentially containing pulverized metal shavings and uncut tab waste, which may enter the battery cell packaging and affect the safety of the battery cell. The battery electrode sheet cutting device of this application embodiment, by providing a groove 11 in the first cutter 1, allows one end of the second cutter 2 to extend into the groove 11 during cutting. With this structure, when cutting multiple tabs on the electrode sheets, the end of the second cutter 2 that cuts the electrode sheet can extend into the groove 11, instead of merely contacting and closing with the cutting edge of the first cutter 1. This increases the effective cutting stroke of the second cutter 2. This increased stroke ensures that the shearing force acting on the bottom tab is sufficiently large to completely cut the bottom tab, effectively preventing the bottom tab from being cut incompletely. This prevents the cut surface from containing pulverized metal shavings and uncut tab waste that may enter the battery cell packaging and affect the safety of the battery cell.
[0042] In addition, although laser cutting technology can be used for cutting multi-layer tabs, it is expensive, especially when the multi-layer tabs are thick. If there are gaps between the unwelded layers of the tabs, the focal length of the laser cutting will change, which can easily cause metal beads and excessive burrs. At the same time, its dust removal method is too simple and may not be able to effectively remove metal shavings and carry away the large amount of heat generated during cutting, which can lead to an excessively large heat-affected zone of the electrode sheet, or even burn the electrode sheet and cause it to be scrapped. Compared with laser cutting, the battery electrode cutting device of this application uses a cutting blade to cut, thus avoiding the problems of high cost and excessive metal beads and burrs that are common with laser cutting. At the same time, the battery electrode cutting device of this application uses a combination of blowing air through the first air hole 12 and suction air through the blade groove 11 to remove dust, which can effectively prevent dust and waste generated during the cutting process from adhering to the electrode surface and affecting the quality of subsequent processes, thereby improving the dust removal effect. Therefore, it does not have the problems of the laser cutting dust removal method being too simple, easily causing heat accumulation, changing the focal length of laser cutting, resulting in a large heat-affected zone of the electrode, or even burning the electrode and causing it to be scrapped.
[0043] In some embodiments, such as Figures 4 to 6 As shown, the shape of the second cutter 2 matches the shape of the groove 11. When the second cutter 2 extends into the groove 11, its sidewall fits against the sidewall of the groove 11. In this way, the groove 11 and the second cutter 2 form a relatively enclosed space, where the dust and debris generated during cutting are contained, thus preventing dust and debris from being stirred up and polluting the environment, and facilitating the absorption and collection of dust and debris by the suction assembly.
[0044] In some embodiments, such as Figure 5As shown, the second cutter 2 has a second air blowing hole 21 at one end that extends into the cutter groove 11. The second air blowing hole 21 is used to communicate with the air blowing assembly. The second air blowing hole 21 is used to blow air into the cutter groove 11, which, in conjunction with the first blowing hole, further improves the blowing effect on dust and waste.
[0045] In some embodiments, such as Figure 1 and Figure 2 As shown, the drive component 3 is connected to the second cutter 2, and the drive component 3 is used to drive the second cutter 2 to move toward or away from the first cutter 1. Specifically, the drive component 3 only drives the second cutter 2 to move, while the first cutter 1 remains stationary. The first cutter 1 and the second cutter 2 are arranged vertically opposite each other, with the second cutter 2 located above the first cutter 1. The drive component 3 drives the second cutter 2 to move up and down. The drive component 3 is a cylinder.
[0046] In some embodiments, such as Figures 1 to 3 As shown, the battery electrode cutting device also includes a bracket 4, a first mounting base 5, and a second mounting base 6. The driving component 3 and the first mounting base 5 are both fixedly mounted on the bracket 4. The first cutter 1 is fixedly mounted on the first mounting base 5, and the second cutter 2 is fixedly mounted on the second mounting base 6. The second mounting base 6 is connected to the driving component 3. The driving component 3 drives the second cutter 2 to move up and down by driving the second mounting base 6 to move up and down.
[0047] In some embodiments, such as Figure 1 and Figure 2 As shown, the battery electrode cutting device also includes a pressing component 7 and a pressing drive component 8 connected to the pressing component 7. The pressing drive component 8 is located on the bracket 4 and is used to drive the pressing component 7 to move toward or away from the first cutter 1. The pressing component 7 can clamp the electrode with the first cutter 1.
[0048] Specifically, during electrode cutting, the pressing drive 8 drives the pressing component 7 to move towards the first cutter 1, thereby pressing the electrode onto the first cutter 1 to limit its position. Then, the second cutter 2 moves down and cuts the electrode. The pressing drive 8 can be a common driving device such as a cylinder or a motor. In the figure, the pressing drive 8 is driven by a cylinder.
[0049] In some embodiments, such as Figure 1 and Figure 2As shown, a pressing drive 8 and a pressing component 7 are connected by a pressing connecting frame 9. The pressing drive 8 drives the pressing component 7 to move up and down through the pressing connecting frame 9. A follower mounting block 30 is provided on the pressing connecting frame 9. The follower mounting block 30 is slidably mounted on the pressing connecting frame 9. The follower mounting block 30 is fixedly connected to the second mounting base 6 and the second cutter 2 respectively. When the second cutter 2 moves up and down, the follower mounting block 30 moves up and down synchronously and slides relative to the pressing connecting frame 9. Thus, the follower mounting block 30 plays a certain guiding role in the movement of the second cutter 2.
[0050] In some embodiments, the pressing element 7 is made of rubber or polyurethane material. The rubber or polyurethane material has a certain degree of flexibility to prevent damage to the electrode sheet, and the area of the pressing element 7 can be in the range of 100-500 square centimeters.
[0051] In some embodiments, such as Figure 1 and Figure 2 As shown, the battery electrode cutting device also includes a guide post 10, one end of which is connected to a first mounting base 5, and a second mounting base 6 is slidably connected to the guide post 10. The guide post 10 is vertically arranged to guide the second mounting base 6 when it moves. The second mounting base 6 can be slidably connected to the guide post 10 via a ball bearing sleeve, thereby reducing the friction between the guide post 10 and the second mounting base 6. The guide post 10 can be made of precision steel, and the diameter of the guide post can be in the range of 10-30 mm; the ball bearing sleeve can be a standard ball bearing.
[0052] In some embodiments, the drive component 3 includes a cylinder or a motor, that is, the drive component 3 can employ common drive devices such as cylinders or motors. Figures 1 to 3 As shown in the figure, the driving component 3 is driven by a cylinder, and its stroke can be in the range of 50-200 mm. The maximum output force of the cylinder can be in the range of 1000-5000 Newtons.
[0053] In some embodiments, the first cutter 1 and the second cutter 2 can be made of wear-resistant materials such as cemented carbide or ceramics, the diameter of the first air hole 12 and the second air hole 21 can be in the range of 0.5-2 mm, the height of the sealed space can be in the range of 1-5 mm, and the vacuum waste collection mechanism can adopt common collection devices such as industrial vacuum cleaners or dust collection boxes.
[0054] This application embodiment also provides a battery electrode cutting device, including an air blowing assembly, an air suction assembly, and a battery electrode cutting device as described above. The air blowing assembly is connected to a first air blowing hole 12 to supply air to the first air blowing hole 12, and the air suction assembly is connected to a cutting groove 11 to collect dust and waste.
[0055] Specifically, such as Figure 3As shown, a feeding port 20 can be provided below the first cutter 1. Dust and waste generated during cutting fall through the feeding port 20 and are collected by the suction component. The blowing component can be a centrifugal fan with an air volume in the range of 10-50 cubic meters per minute; the suction component can be a side-intake industrial vacuum cleaner with a maximum suction power in the range of 3000-8000 Pascals.
[0056] The working process of the battery electrode cutting device in this embodiment is as follows:
[0057] 1. Place the electrode sheet to be cut on the first cutter 1 and press the electrode sheet with the pressing part 7.
[0058] 2. Start the drive unit 3 to drive the second cutter 2 to move downward, and the first cutter 1 and the second cutter 2 begin to cut the electrode sheet.
[0059] 3. During the cutting process, the first air hole 12 blows air onto the cutting surface of the blade groove 11 and the electrode tab, blowing up the waste generated during cutting and blowing away the waste adhering to the electrode sheet.
[0060] 4. The suction component draws the waste debris towards the vacuum waste collection mechanism, which then collects the waste debris.
[0061] 5. After cutting, the second cutter 2 returns to its original position, the pressing part 7 is released, and the cut electrode sheet is taken out.
[0062] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.
[0063] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A battery pole piece slitting device, characterized by, include: First cutting blade, second cutting blade, and drive unit; The first cutter has a groove that extends through the first cutter, and the side wall of the groove has a first air blowing hole, which is used to communicate with the air blowing assembly; The driving component is used to drive the first cutter and / or the second cutter to move so that the first cutter and the second cutter move closer to each other or further away from each other. When the first cutter and the second cutter move closer to each other, one end of the second cutter can extend into the blade groove. The end of the blade groove away from the second cutter is used to communicate with the suction component.
2. The battery electrode cutting device according to claim 1, characterized in that: The shape of the second cutter matches the shape of the groove, and when the second cutter extends into the groove, the sidewall of the second cutter fits against the sidewall of the groove.
3. The battery electrode cutting device according to claim 1, characterized in that: The second cutter has a second air blowing hole at one end that extends into the cutter groove, and the second air blowing hole is used to communicate with the air blowing assembly.
4. The battery electrode cutting device according to claim 1, characterized in that: The driving component is connected to the second cutter, and the driving component is used to drive the second cutter to move toward or away from the first cutter.
5. The battery electrode cutting device according to claim 4, characterized in that: It also includes a bracket, a first mounting base and a second mounting base. The drive component and the first mounting base are both disposed on the bracket. The first cutter is disposed on the first mounting base and the second cutter is disposed on the second mounting base. The second mounting base is connected to the drive component.
6. The battery electrode cutting device according to claim 5, characterized in that: It also includes a pressing component and a pressing drive component connected to the pressing component. The pressing drive component is disposed on the bracket and is used to drive the pressing component to move toward or away from the first cutter. The pressing component is capable of clamping the electrode sheet with the first cutter.
7. The battery electrode cutting device according to claim 6, characterized in that: The pressure component is made of rubber or polyurethane material.
8. The battery electrode cutting device according to claim 5, characterized in that: It also includes a guide post, one end of which is connected to the first mounting base, and the second mounting base is slidably connected to the guide post.
9. The battery electrode cutting device according to claim 1, characterized in that: The drive component includes a cylinder or a motor.
10. A battery pole piece slitting apparatus, characterized by, include: The blowing assembly, the suction assembly, and the battery electrode cutting device as described in any one of claims 1-9.