Electrode processing equipment and battery production system

Abstract

This application relates to an electrode processing apparatus and a battery production system. After the electrode tab is cut out by the cutting assembly, the removal part located downstream of the cutting assembly can contact the electrode tab through the abrasive part. Through friction, the fine molten bead particles attached to the cutting edge of the electrode tab and nearby are effectively removed, reducing the number of these particles remaining on the electrode and subsequently entering the battery. This reduces problems such as internal short circuits and performance degradation caused by particles, and effectively improves the reliability of the battery after production.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to electrode processing equipment and battery manufacturing systems. Background Technology

[0002] During electrode processing, laser cutting of the tabs can easily create small particles, such as micron-sized copper beads, at and near the cutting edge. However, due to limitations in traditional electrode processing methods, these particles can easily enter the finished battery, thus affecting its reliability. Utility Model Content

[0003] Therefore, it is necessary to provide an electrode processing apparatus and a battery production system that can effectively remove at least some particles and improve battery reliability.

[0004] In a first aspect, this application provides an electrode processing apparatus, the electrode processing apparatus comprising: a cutting assembly for cutting out electrode tabs of an electrode sheet; and a removal member located downstream of the cutting assembly along the conveying direction of the electrode sheet, the removal member including a frosted portion for contacting the electrode tab.

[0005] The aforementioned electrode processing apparatus, after the cutting assembly cuts out the electrode tabs, has a removal component located downstream of the cutting assembly that can contact the electrode tabs through a grinding section. Through friction, it effectively removes small molten bead particles attached to the cutting edge of the electrode tabs and nearby areas, reducing the amount of these particles remaining on the electrode and subsequently entering the battery. This reduces problems such as internal short circuits and performance degradation caused by particles, effectively improving the reliability of the battery after production.

[0006] In some embodiments, the electrode processing apparatus further includes a support roller rotatable about its own axis, the support roller being located downstream of the cutting assembly along the electrode's feed direction, and the removal member being located on at least one end and / or at least one side of the support roller along its own axis. The support roller is used to contact the main body of the electrode. This design allows the main body of the electrode to be supported and positioned while the protruding tabs are rubbed without abrading the active material layer of the main body, thus improving the structural stability of the electrode.

[0007] In some embodiments, the removal element is disposed on at least one end of the support roller and can rotate with the support roller. This design allows it to rotate synchronously with the support roller to adapt to the electrode belt speed, maintain a stable friction removal effect, reduce the maintenance cost of the device, and improve the stability of particle removal during processing.

[0008] In some embodiments, the removal component and the support roller are an integral structure, and the roughness of the abrasive portion is greater than the roughness of the support roller surface. This design simplifies the device structure, reduces assembly steps, and simultaneously ensures both effective particle removal and protection of the electrode body, further improving processing reliability.

[0009] In some embodiments, the removal component is detachably disposed at at least one end of the support roller. This design facilitates the replacement of suitable removal components according to processing requirements, maintaining a stable particle removal effect while reducing the operating and maintenance costs of the device and improving its adaptability.

[0010] In some embodiments, the removal component is located outside at least one side of the support roller and is spaced apart from the support roller. This design facilitates independent adjustment of the position of the removal component, and eliminates the need to stop the machine and disassemble the support roller when replacing or maintaining the removal component, reducing the difficulty of device maintenance. At the same time, it can adapt to processing requirements with different tab protrusion lengths, improving the flexibility and adaptability of the device.

[0011] In some embodiments, the abrasive portion is spirally disposed on the surface of the removal member. This design reduces the risk of instantaneous deformation of the tab under load and improves the stability of particle removal performance.

[0012] In some embodiments, the abrasive portion includes a plurality of abrasive portions, each abrasive portion being spaced apart circumferentially from the removal member. This design allows the multiple spaced abrasive portions to effectively rub against each passing tab, improving the stable friction removal capability of the abrasive portion.

[0013] In some embodiments, the roughness of the abrasive portion is 3000 mesh to 8000 mesh. This design, with the roughness of the abrasive portion set to 3000 mesh to 8000 mesh, ensures that the abrasive portion has sufficient abrasive removal capability without the risk of excessive scratching or wear on the tab body material due to excessive roughness.

[0014] In some embodiments, the roughness of the abrasive portion is 4000 mesh to 6000 mesh. This design allows for a further balance between particle removal efficiency and the protection requirements of the tab structure, thereby improving the structural integrity and processing reliability of the processed tab.

[0015] In some embodiments, the abrasive section has a structure made of one of silicon carbide, alumina, or diamond. This design utilizes silicon carbide, alumina, and diamond, all of which are abrasive materials with high hardness and stable frictional properties, enabling the abrasive section to maintain its frictional capacity over a long period and further reducing the operating and maintenance costs of the device.

[0016] In some embodiments, the electrode processing apparatus further includes a suction assembly for suctioning the tabs located on the abrasive section. This design enables timely collection of removed fine particles, reducing the risk of particle accumulation or secondary adhesion within the apparatus, further improving the cleanliness of electrode processing and enhancing the reliability of battery production.

[0017] In some embodiments, the removal component has a cavity, and the surface of the removal component is provided with adsorption holes located on the outer periphery of the abrasive portion. The adsorption holes communicate with the cavity, and the suction assembly communicates with the cavity. This design integrates the adsorption channel inside the removal component, eliminating the need to occupy additional space around the electrode travel path, simplifying the overall layout of the device. Simultaneously, it enables timely adsorption and collection of particles after abrasion, further reducing the risk of secondary particle adhesion.

[0018] In some embodiments, the electrode processing apparatus further includes an air blowing assembly, the removal component comprising an infeed side and an outlet side distributed along the conveying direction of the electrode, and the air blowing end of the air blowing assembly facing the infeed side and / or the outlet side. This design further improves the overall particle removal effect and enhances the reliability of electrode processing.

[0019] Secondly, this application provides a battery production system, which includes the electrode processing apparatus described in any of the above claims. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the electrode processing apparatus described in some embodiments of this application.

[0021] Figure 2 This is a structural diagram of the support roller, removal component, and electrode sheet assembly described in some embodiments of this application.

[0022] Figure 3 This is a schematic diagram of the structure of the support roller and the removal component described in some embodiments of this application.

[0023] Figure 4 This is a schematic diagram of the support roller and removal component described in some other embodiments of this application.

[0024] Figure 5 This is a schematic diagram of the structure of the support roller and the removal component as described in some other embodiments of this application.

[0025] Figure 6 This is a schematic diagram of the structure of the support roller and the removal component as described in some other embodiments of this application.

[0026] Figure 7 This is a structural diagram of the support roller, removal component, suction assembly, and electrode sheet as described in some embodiments of this application.

[0027] Figure 8 This is a structural cross-sectional view of the support roller and removal component described in some embodiments of this application.

[0028] Figure 9 This is a structural diagram of the support roller, removal component, suction assembly, and blowing assembly described in some embodiments of this application.

[0029] Figure 10 This is a diagram showing the wrap angle structure of the electrode sheet on the removal component in some embodiments of this application.

[0030] 10. Cutting assembly; 20. Removal part; 21. Abrasive section; 22. Cavity; 23. Adsorption hole; 24. Feed side; 25. Discharge side; 30. Support roller; 31. Suction channel; 40. Suction assembly; 50. Air blowing assembly; 60. Winding assembly; 70. Electrode; 71. Main body; 72. Electrode tab. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms 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.

[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] Currently, judging from market trends, the application of power battery devices is becoming increasingly widespread. Power battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace, among other fields. With the continuous expansion of the application areas of power battery devices, the market demand is also constantly increasing.

[0038] During electrode processing, when laser-cutting the tabs, the high-energy laser beam causes the material to melt or vaporize instantaneously at high temperatures. After cooling, some of the molten material forms tiny particles, such as micron-sized copper beads, at or near the cut edge. These beads are easily detached and splashed during subsequent electrode winding, hot pressing, and conveying processes due to equipment vibration, mechanical stress, or friction between electrodes. If these detached molten beads enter the active area of ​​the electrode or the separator area of ​​the battery, they can create a potential conductive path, posing a risk of short circuit.

[0039] Based on this, in order to address the problem that traditional electrode processing cannot effectively remove particles from the electrode, thus affecting battery reliability, this application provides an electrode processing apparatus. After the cutting assembly cuts out the tab, the removal component located downstream of the cutting assembly can contact the tab through the abrasive section. Through friction, it effectively removes the fine molten bead particles attached to the cutting edge of the tab and nearby, reducing the amount of these particles remaining on the electrode and subsequently entering the battery. This reduces problems such as internal short circuits and performance degradation caused by particles, effectively improving the reliability of the battery after production.

[0040] According to some embodiments of this application, please refer to Figure 1 This application provides an electrode processing apparatus, which includes a cutting assembly 10 and a removal component 20. The cutting assembly 10 is used to cut out the tabs 72 of the electrode 70; the removal component 20 is located downstream of the cutting assembly 10 along the conveying direction of the electrode 70, and the removal component 20 includes an abrasive portion 21 for contacting the tabs 72.

[0041] The cutting assembly 10 refers to a structure capable of cutting the raw material strip of the electrode 70 to cut out the tab 72 of a preset shape. For example, it can be a laser cutting assembly 10. After the tab 72 is cut along the belt direction, the tab 72 protrudes from the main body 71 of the electrode 70, where the main body 71 refers to the area on the electrode 70 that has active material.

[0042] During the cutting process, the edges of the tab 72 will form small particles due to the heat generated during cutting, such as micron-sized copper beads. If these beads are not removed in time, they can easily fall into the active area of ​​the electrode 70 or the separator area of ​​the battery in subsequent processes, forming a potential conductive path and causing a short circuit risk.

[0043] Therefore, in this embodiment, the removal component 20 is positioned downstream of the cutting assembly 10 along the path of the electrode sheet 70 in the conveyor belt direction. This allows the cut electrode tab 72 to flow through the removal component 20 and contact the abrasive portion 21 on it. At this time, the particles on the electrode tab 72 are abraded off the surface of the electrode tab 72 by the friction of the abrasive portion 21, effectively reducing the amount of residual particles on the electrode tab 72 and thus reducing the risk of particles falling off and contaminating the battery interior in subsequent processes.

[0044] The removal component 20 refers to a component with a frosted portion 21 on its surface and arranged corresponding to the position of the electrode tab 72. The removal component 20 can be a fixed structure or a rotatable structure to adapt to the processing requirements of electrode sheets 70 with different belt speeds.

[0045] The abrasive section 21 is a structural part on the removal component 20 with a certain degree of rough friction capability, which can remove small particles attached to the edge of the tab 72 through contact friction. Simultaneously, because the bonding force between the small particles and the tab 72 is relatively weak, the particles easily detach from the tab 72 under the friction of the abrasive section 21. Furthermore, the material of the tab 72 itself, such as aluminum foil or copper foil, has higher hardness and density, so the abrasive section 21 will not, or can hardly, scratch or damage the structure of the tab 72. The shape of the abrasive section 21 can be designed in various ways, such as a dotted raised structure on the surface of the removal component 20; or it can be strip-shaped. During the conveyor belt operation, when the tab 72 passes through the abrasive section 21, it can make frictional contact with the abrasive section 21. This frictional action effectively removes small molten bead particles attached to the cut edge and surrounding area of ​​the tab 72, reducing the likelihood of these particles remaining on the electrode 70 and subsequently entering the battery.

[0046] In addition, the fine particles on the tab 72 can be observed with an optical microscope, such as, but not limited to, a 500x optical microscope, to observe the morphology of the tab 72 before and after passing through the abrasive section 21, so as to determine the particle removal effect.

[0047] This design effectively removes small molten bead particles attached to the cutting edge and vicinity of the tab 72 through friction, reducing the likelihood of these particles remaining on the electrode 70 and subsequently entering the battery. This reduces problems such as internal short circuits and performance degradation caused by particles, effectively improving the reliability of the battery after production.

[0048] According to some embodiments of this application, optionally, please refer to Figure 2 The electrode processing apparatus also includes a support roller 30 that can rotate about its own axis. The support roller 30 is located at the downstream end of the cutting assembly 10 along the belt-carrying direction of the electrode 70. The removal part 20 is located on at least one end and / or at least one side of the support roller 30 along its own axis. The support roller 30 is used to contact the main body 71 of the electrode 70.

[0049] The support roller 30 is a roller-shaped component used to support and guide the electrode 70 during its conveyor belt movement. It supports the electrode 70 to maintain a stable conveyor belt posture, reducing the probability of the electrode 70 shifting or deviating during conveyor belt movement. After the electrode 70 is cut, the main body 71 of the electrode 70 moves against the outer surface of the support roller 30, while the electrode lug 72 protruding from the main body 71 extends to the end of the support roller 30 along its axial direction or to the outer side of the support roller 30, allowing it to contact the removal component 20 arranged at the corresponding position, thereby completing the abrasive particle removal operation during conveyor belt movement.

[0050] The main body 71 of the electrode 70 can be wrapped around the top of the support roller 30 or around the bottom of the support roller 30. In some specific examples, the main body 71 of the electrode 70 is attached to the surface of the support roller 30 with a certain wrap angle. During the processing, the electrode 70 can drive the support roller 30 to rotate around its own axis.

[0051] The removal component 20 can be installed at at least one end of the support roller 30 along its own axis, or it can be not installed on the support roller 30 and located outside at least one side of the support roller 30 along its own axis. Of course, the removal component 20 can also be provided at both the end and the outer side of the support roller 30. When the removal component 20 is located outside at least one side of the support roller 30 along its own axis, the removal component 20 is an independent structure with respect to the support roller 30 and will not rotate with the support roller 30. This facilitates independent maintenance, replacement and position adjustment of the removal component 20, adapting to the processing needs of electrode sheets 70 with different width specifications.

[0052] In addition, the electrode processing apparatus may also include a winding assembly 60, which is used to wind the electrode 70. The support roller 30 and the removal member 20 are both located at the upstream end of the winding assembly 60 along the belt carrying direction, that is, the electrode 70 can enter the winding assembly 60 after the particles are removed.

[0053] This design allows the main body 71 of the electrode 70 to be supported and positioned, while the protruding tabs 72 are subjected to friction treatment, which will not wear down the active material layer of the main body 71 of the electrode 70, thus improving the structural stability of the electrode 70.

[0054] According to some embodiments of this application, optionally, please refer to Figure 3 The removal component 20 is provided on at least one end of the support roller 30 and can rotate together with the support roller 30.

[0055] The removal component 20 can be disposed at one end of the support roller 30 along its own axis, or simultaneously at both ends of the support roller 30 along its own axis. In this case, the removal component 20 can rotate together with the support roller 30. Thus, during the feeding process of the electrode 70, the main body 71 of the electrode 70 can drive the support roller 30 to rotate, and the electrode tabs 72 of the electrode 70 can drive the removal component 20 to rotate. During this process, there is contact friction between the electrode tabs 72 and the removal component 20. Furthermore, the bonding force between fine particles and the electrode tabs 72 is relatively weak, making it easy to scrape the particles off the electrode tabs 72 and cause them to fall off.

[0056] Meanwhile, the removal part 20 can rotate synchronously with the support roller 30. During the feeding process of the electrode 70, the abrasive part 21 of the removal part 20 can maintain a relatively stable contact friction with the electrode tab 72. This can not only adapt to the feeding speed of the electrode 70 and reduce excessive wear of the electrode tab 72 by the abrasive part 21, but also reduce the situation where the electrode tab 72 is stretched and deformed due to the large relative speed difference between the removal part 20 and the electrode tab 72.

[0057] The removal component 20 can be designed to be either non-detachable or detachable on the support roller 30. When the abrasive part 21 wears down due to long-term use of the removal component 20, the removal effect of the particles on the tab 72 can be maintained by replacing the removal component 20 alone, without having to replace the entire support roller 30, thus effectively reducing maintenance costs.

[0058] This design allows the support roller 30 to rotate synchronously with the belt speed of the electrode sheet 70, maintaining a stable friction removal effect while reducing the maintenance cost of the device and improving the stability of particle removal during processing.

[0059] According to some embodiments of this application, optionally, please refer to Figure 3 The removal part 20 and the support roller 30 are integrated structures, and the roughness of the abrasive part 21 is greater than the roughness of the surface of the support roller 30.

[0060] The integrated structure means that the removal component 20 and the support roller 30 are integrally formed without the need for additional connection and assembly processes. This simplifies the manufacturing process of the device, reduces assembly errors, and improves the structural stability of the removal component 20 on the support roller 30, thereby reducing the risk of the removal component 20 becoming loose or displaced during use.

[0061] Setting the roughness of the abrasive section 21 to be greater than that of the support roller 30 surface not only enables the abrasive section 21 to have sufficient frictional ability to remove particles on the tab 72, but also reduces the wear of the support roller 30 surface on the electrode body 71, thereby improving the structural stability of the electrode body 71.

[0062] Furthermore, when the removal component 20 and the support roller 30 are integrated into a single design, their materials can be consistent, while the material of the abrasive section 21 can remain unchanged or be made of different materials. For example, the material of the abrasive section 21 can be, but is not limited to, one of hard materials such as silicon carbide, alumina, or diamond. Simultaneously, the axial dimensions of the removal component 20 and the support roller 30 can be determined according to the dimensions of the electrode sheet 70.

[0063] This design simplifies the device structure, reduces assembly steps, and balances particle removal efficiency with protection of the electrode body 71, further improving processing reliability.

[0064] According to some embodiments of this application, optionally, please refer to Figure 4 The removal part 20 is detachably provided at at least one end of the support roller 30.

[0065] When the abrasive part 21 of the removal part 20 wears out or a different specification of removal part 20 needs to be replaced, the removal part 20 can be directly removed from the support roller 30 for replacement without replacing the entire support roller 30, making the operation flexible and convenient. At the same time, the abrasive part 21 removal part 20 with the corresponding roughness can be selected according to different electrode materials and different particle sizes, flexibly adapting to different processing requirements.

[0066] The removal component 20 can be sleeved on one end of the support roller 30, or the end face of the removal component 20 can be detachably connected to the end face of the support roller 30. The detachable connection method can be, but is not limited to, bolt connection, snap-fit, magnetic engagement, etc.

[0067] This design allows for easy replacement of the appropriate removal component 20 according to processing requirements, which not only maintains a stable particle removal effect but also reduces the cost of using and maintaining the device and improves the adaptability of the device.

[0068] According to some embodiments of this application, optionally, please refer to Figure 5 The removal component 20 is located outside at least one side of the support roller 30 and is spaced apart from the support roller 30.

[0069] It is understood that the removal component 20 is not connected to the support roller 30; the two are independent of each other. The removal component 20 can be fixedly installed and does not need to rotate with the support roller 30. During the conveyor belt movement of the electrode tab 72, it generates relative motion friction with the electrode tab 72 to achieve particle removal. Of course, the removal component 20 can also be configured to rotate around its own axis, so that when the electrode tab 72 passes by, it can also drive the removal component 20 to rotate through friction.

[0070] The gap between the removal component 20 and the support roller 30 can be adjusted according to the size of the electrode tab 72 on the electrode sheet 70, so that the removal component 20 can adapt to electrode sheets 70 of different specifications.

[0071] This design allows for independent adjustment of the position of the removal part 20, and eliminates the need to stop the machine to disassemble the support roller 30 when replacing or maintaining the removal part 20, thus reducing the difficulty of device maintenance. At the same time, it can adapt to the processing requirements of different tab protrusion lengths, improving the flexibility and adaptability of the device.

[0072] According to some embodiments of this application, optionally, please refer to Figure 6 The abrasive part 21 is spirally disposed on the surface of the removal part 20.

[0073] It is known that the abrasive part 21 has a strip-shaped structure, and its spiral is arranged on the surface of the removal part 20. When the removal part 20 rotates or the electrode 70 moves, the spirally distributed abrasive part 21 can form a gradual contact friction with the electrode tab 72, reducing the risk of the electrode tab 72 being deformed due to excessive friction force.

[0074] The grinding section 21 can be designed to rotate in either a forward or reverse direction, depending on the direction of the electrode 70's belt travel and the rotation direction of the support roller 30. Furthermore, the spirally distributed grinding section 21 also has a certain material discharge effect during the friction process. For example, when the grinding section 21 rotates spirally under the drive of the electrode tab 72, some of the ground-off particles can be guided and conveyed along the spiral pattern.

[0075] This design reduces the risk of instantaneous deformation of the tab 72 under load, and improves the stability of particle removal.

[0076] According to some embodiments of this application, optionally, please refer to Figure 5 The abrasive part 21 includes a plurality of abrasive parts 21, each abrasive part 21 being spaced apart in the circumferential direction of the removal member 20.

[0077] The distribution of the abrasive part 21 on the removal part 20 can be varied, such as, but not limited to, being evenly spaced along the circumference or unequally spaced.

[0078] With this design, the multiple spaced abrasive sections 21 can effectively rub the passing tabs 72, improving the stable friction removal capability of the abrasive sections 21.

[0079] According to some embodiments of this application, optionally, the roughness of the abrasive portion 21 is 3000 mesh to 8000 mesh.

[0080] As can be seen, roughness refers to the mesh number corresponding to the average size of abrasive particles. The abrasive part 21 within this mesh number range has sufficient frictional ability to effectively grind away small molten bead particles with weak bonding force, and will not cause significant scratches or wear to the body material of the tab 72 due to excessive roughness.

[0081] The roughness of the abrasive part 21 can be between 3000 mesh and 8000 mesh, for example, but not limited to 3000 mesh, 3500 mesh, 4000 mesh, 5000 mesh, 6000 mesh, 7000 mesh, 8000 mesh, etc.

[0082] This design sets the roughness of the abrasive part 21 to 3000-8000 mesh, which ensures that the abrasive part 21 has sufficient abrasive removal capability without causing excessive scratches or wear to the tab 72 body material due to excessive roughness.

[0083] According to some embodiments of this application, optionally, the roughness of the abrasive portion 21 is 4000 mesh to 6000 mesh.

[0084] It can be seen that the roughness of the abrasive part 21 can be between 4000 mesh and 6000 mesh, for example, but not limited to 4000 mesh, 4500 mesh, 5000 mesh, 5500 mesh, 6000 mesh, etc.

[0085] This design allows for a better balance between particle removal efficiency and the need to protect the tab 72 structure, thereby improving the structural integrity and processing reliability of the tab 72 after processing.

[0086] According to some embodiments of this application, optionally, the abrasive portion 21 has a structure made of one of silicon carbide, aluminum oxide, or diamond.

[0087] The frosted part 21 can be formed on the removal part 20 in various ways, such as, but not limited to, coating, sintering, and bonding.

[0088] With this design, silicon carbide, aluminum oxide, and diamond are all abrasive materials with high hardness and stable friction performance, which can maintain the friction capability of the abrasive part 21 for a long time and further reduce the use and maintenance costs of the device.

[0089] According to some embodiments of this application, optionally, please refer to Figure 7 The electrode processing apparatus also includes a suction assembly 40, which is used to suction the tabs 72 located on the abrasive section 21.

[0090] The suction component 40 refers to a functional component that can generate negative pressure suction to promptly remove fine particles worn off from the electrode tab 72, reducing the risk of these particles re-adhering to other areas of the electrode 70 after scattering. It can be, but is not limited to, vacuum pumps, industrial vacuum cleaners, etc.

[0091] The suction component 40 can be arranged on the side, above or below the abrasive section 21. While the tab 72 completes the friction treatment, it uses negative pressure to promptly suck away and collect the separated particles, reducing the risk of particles accumulating or re-attaching in the device.

[0092] This design allows for the timely collection of removed fine particles, reducing the risk of particle accumulation or secondary adhesion within the device, further improving the cleanliness of electrode 70 processing, and enhancing the reliability of battery production.

[0093] According to some embodiments of this application, optionally, please refer to Figure 8 The removal component 20 has a cavity 22, and the surface of the removal component 20 is provided with an adsorption hole 23 located on the outer periphery of the abrasive part 21. The adsorption hole 23 is connected to the cavity 22, and the suction assembly 40 is connected to the cavity 22.

[0094] The cavity 22 refers to the accommodating space formed by the hollow interior of the removal component 20, which can transmit negative pressure to the surface of the removal component 20 through the adsorption holes 23, so that a stable negative pressure adsorption area is formed around the abrasive part 21. In some specific examples, the electrode processing device also includes a support roller 30, the removal component 20 is disposed at at least one end of the support roller 30 along its own axis, and the support roller 30 is provided with a suction channel 31 communicating with the cavity 22, and the suction assembly 40 is connected to the suction channel 31.

[0095] During the processing, the suction component 40 suctions the cavity 22. At this time, the fine particles that are ground off from the tab 72 will enter the cavity 22 through the adsorption hole 23 under the action of negative pressure and be collected by the suction component 40. They will not remain on the surface of the abrasive part 21 or drift to other parts of the device.

[0096] The adsorption holes 23 refer to the porous structures disposed on the surface of the removal component 20, connecting the outside to the internal cavity 22 of the removal component 20. They allow fine particles that have been ground off to smoothly enter the cavity 22 under negative pressure, without interfering with the normal friction operation of the abrasive section 21. The adsorption holes 23 can be distributed between the gaps of the abrasive section 21 or arranged around the abrasive section 21, so that particles that have been ground off at various locations can be adsorbed and collected in a timely manner.

[0097] This design integrates the adsorption channel inside the removal component 20, eliminating the need to occupy additional space around the belt path of the electrode 70. This simplifies the overall layout of the device and allows for timely adsorption and collection of particles after they have been ground, further reducing the risk of secondary particle adhesion.

[0098] According to some embodiments of this application, optionally, please refer to Figure 9 and Figure 10 The electrode processing apparatus also includes an air blowing assembly 50, and the removal component 20 includes an infeed side 24 and an outlet side 25 distributed along the conveying direction of the electrode 70. The air blowing end of the air blowing assembly 50 faces the infeed side 24 and / or the outlet side 25.

[0099] The blowing assembly 50 is a functional component capable of blowing compressed gas, which delivers airflow to the feed side 24 and / or the discharge side 25. When the blowing end faces the feed side 24, it can pre-blow away or loosely adhered particles on the surface of the tab 72, reducing the amount of particles on the tab 72 and improving the effect of subsequent grinding. When the blowing end faces the discharge side 25, it can directly blow away particles that have just been ground off the tab 72, preventing particles from falling onto the electrode 70 or the device. In some specific examples, the blowing end of the blowing assembly 50 is set to face the feed side 24, thus forming a multi-stage composite particle removal system of blowing-grinding-suction with the grinding section 21 and the suction assembly 40, further improving the particle removal rate.

[0100] This design further enhances the overall particle removal effect and improves the reliability of electrode 70 processing.

[0101] According to some embodiments of this application, this application provides a battery production system, which includes the electrode processing apparatus of any of the above.

[0102] According to some embodiments of this application, an electrode processing apparatus is provided. The electrode processing apparatus includes a cutting assembly 10, a support roller 30, and a removal component 20. The cutting assembly 10 is used to cut out the tabs 72 of the electrode 70. The support roller 30 is used to support the main body 71 of the electrode 70 and rotates around its own axis under the drive of the electrode 70. The removal component 20 is used to contact the tabs 72 of the electrode 70. The removal component 20 includes a sanding portion 21, the roughness of which is greater than the roughness of the surface of the support roller 30.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electrode processing apparatus, characterized in that, The electrode processing apparatus includes: Cutting assembly (10) for cutting out tabs (72) of electrode sheet (70); The removal component (20) is located at the downstream end of the cutting assembly (10) along the belt-carrying direction of the electrode (70). The removal component (20) includes a frosted portion (21) for contacting the electrode tab (72), and the electrode tab (72) can rub against the frosted portion (21) during the belt-carrying process and when passing through the frosted portion (21). The electrode processing apparatus further includes a support roller (30) rotatable about its own axis, the support roller (30) being located downstream of the cutting assembly (10) along the belt-carrying direction of the electrode (70), the removal member (20) being located on at least one end and / or at least one side of the support roller (30) along its own axis, and the support roller (30) being used to contact the main body (71) of the electrode (70).

2. The electrode processing apparatus according to claim 1, characterized in that, The removal component (20) is disposed on at least one end of the support roller (30) and can rotate together with the support roller (30).

3. The electrode processing apparatus according to claim 2, characterized in that, The removal part (20) and the support roller (30) are an integrated structure, and the roughness of the abrasive part (21) is greater than the roughness of the surface of the support roller (30).

4. The electrode processing apparatus according to claim 2, characterized in that, The removal component (20) is detachably disposed at at least one end of the support roller (30).

5. The electrode processing apparatus according to claim 1, characterized in that, The removal member (20) is located outside at least one side of the support roller (30) and is spaced apart from the support roller (30).

6. The electrode processing apparatus according to claim 1, characterized in that, The abrasive section (21) is spirally disposed on the surface of the removal member (20); and / or, The abrasive section (21) includes a plurality of abrasive sections (21), each of which is spaced apart in the circumferential direction of the removal member (20).

7. The electrode processing apparatus according to claim 1, characterized in that, The roughness of the abrasive part (21) is 3000 mesh to 8000 mesh.

8. The electrode processing apparatus according to claim 7, characterized in that, The roughness of the abrasive part (21) is 4000 mesh to 6000 mesh.

9. The electrode processing apparatus according to claim 1, characterized in that, The abrasive part (21) has a structure made of one of silicon carbide, aluminum oxide, or diamond.

10. The electrode processing apparatus according to any one of claims 1-9, characterized in that, The electrode processing device further includes a suction assembly (40) for suctioning the tabs (72) located on the abrasive section (21).

11. The electrode processing apparatus according to claim 10, characterized in that, The removal component (20) has a cavity (22), and the surface of the removal component (20) is provided with an adsorption hole (23) located on the outer periphery of the abrasive part (21). The adsorption hole (23) communicates with the cavity (22), and the suction assembly (40) communicates with the cavity (22).

12. The electrode processing apparatus according to claim 10, characterized in that, The electrode processing apparatus further includes an air blowing assembly (50), and the removal component (20) includes an infeed side (24) and an outlet side (25) distributed along the conveying direction of the electrode (70), with the air blowing end of the air blowing assembly (50) facing the infeed side (24) and / or the outlet side (25).

13. A battery production system, characterized in that, The battery production system includes the electrode processing apparatus according to any one of claims 1-12.

Images