Dust removal assembly and pole piece laser cutting device

Abstract

The application relates to the technical field of battery production, and discloses a dust removal assembly and a pole piece laser cutting device, which comprises a dust removal component and a dust suction component. The dust removal component comprises a brush, a powder scraping piece and a driving piece, the brush is in driving connection with the driving piece, is used for sweeping dust and slag on a roller assembly, and the powder scraping piece is in contact with the edge of the brush; the dust suction component comprises a cover body and a dust suction power source, the cover body and the dust suction power source are in communication, and the dust removal component is arranged in the cover body. Through the cooperation of the dust removal component and the dust suction component, dust suction work can be continuously carried out during the cutting process, the accumulation of dust and slag is avoided, the cutting stability is ensured, the automation degree of the overall cleaning work is high, continuous production is effectively ensured, the production efficiency and the production capacity are improved, and the manual operation and maintenance cost is reduced.

Description

Technical Field

[0001] This application belongs to the field of battery manufacturing technology, specifically relating to a dust removal component and an electrode laser cutting device. Background Technology

[0002] As a core energy supply component in new energy vehicles and energy storage equipment, the performance of lithium-ion batteries is directly related to the precision of their manufacturing process. Electrodes, as core functional components of lithium-ion batteries, play a crucial role in lithium-ion insertion / extraction and charge transport. Their processing accuracy and edge quality directly determine the battery's assembly compatibility, internal impedance consistency, and safety redundancy. Therefore, the electrode cutting process is considered one of the core critical processes in lithium battery manufacturing.

[0003] With the rapid development of the lithium battery industry, laser die-cutting technology has become the mainstream technology for electrode cutting due to its advantages of non-contact processing, high cutting precision, narrow heat-affected zone, fast cutting speed, and flexible adaptation to complex electrode structure designs such as tabless and multi-tabs. It is widely used in the electrode processing of various lithium-ion batteries such as cylindrical batteries, square batteries, and pouch batteries.

[0004] However, in actual industrial production, the electrode material in existing laser die-cutting equipment undergoes instantaneous melting, vaporization, and decomposition under high-energy laser beam irradiation, generating a large amount of micron- or even submicron-sized dust particles and debris. Because the electrode is in a high-speed, continuous transmission state during laser cutting, and the cutting area is mostly a semi-enclosed or partially open structure, this dust and debris are difficult to remove promptly and thoroughly, easily accumulating at the cutting edge, on the electrode surface, and in the cutting cavity, laser optical path components, and the inner walls of the dust extraction channel. As production continues, the amount of accumulated dust and debris gradually increases, leading to a continuous decline in cutting stability. Frequent shutdowns are required for manual cleaning of the cutting area and equipment components, not only interrupting the continuous production process and significantly reducing production efficiency and capacity, but also increasing manual maintenance costs. Utility Model Content

[0005] To address the shortcomings of the prior art, this application provides a dust removal component and an electrode laser cutting device. Through the coordinated design of the dust removal component and the dust collection component, continuous dust removal and dust collection operations can be carried out during the cutting process, avoiding the accumulation of dust and slag, thereby ensuring cutting stability. The overall cleaning operation has a high degree of automation, effectively ensuring continuous production, improving production efficiency and capacity, and reducing manual maintenance costs.

[0006] The technical effects to be achieved in this application are realized through the following aspects: In a first aspect, this application provides a dust removal component, comprising: A dust removal component includes a brush, a dust scraper, and a drive unit. The brush is driven to the drive unit and is used to remove dust and residue from the roller assembly. The edges of the dust scraper and the brush are in contact. A dust collection component includes a cover and a dust collection power source, wherein the cover and the dust collection power source are connected, and the dust collection component is located inside the cover.

[0007] In some implementations, the suction component includes an intake port, and the dust scraper is located on the side of the brush near the intake port.

[0008] In some implementations, the powder scraper overlaps with the edge of the brush.

[0009] In some implementations, the brush and the drive unit are detachably connected by bolts.

[0010] In some implementations, the vacuuming component further includes an air regulating valve, which is electrically connected to the vacuuming power source.

[0011] Secondly, this application provides an electrode laser cutting apparatus, comprising: Roller assembly for transferring electrode sheets; A laser generator, located on one side of the roller assembly, is used for cutting electrode sheets; and A dust removal component, which is in contact with the roller assembly, is used to remove dust and slag after laser cutting by the laser generator. The dust removal component described above is used.

[0012] In some implementations, the roller assembly includes an upper roller and a lower roller disposed opposite each other, a laser-cutting area is formed in the region between the upper roller and the lower roller, and the laser beam of the laser generator is opposite to the laser-cutting area.

[0013] In some implementations, the surfaces of the upper roller and the lower roller are provided with an anti-stick coating.

[0014] In some implementations, the anti-stick coating is any one of a DLC coating, a ceramic coating, a titanium nitride coating, or an ultra-hard anodizing coating.

[0015] In some implementations, the cover is located on the side of the lower roller away from the laser generator and has a gap between it and the lower roller.

[0016] In summary, this application has at least the following advantages: The dust removal component and electrode laser cutting device provided in this application use a brush to sweep away dust at the cleaning location. As the drive unit rotates the brush, a dust scraper releases the dust from the brush, and the dust is confined within a cavity by a cover. Finally, a dust suction power source sucks the dust from the cover to the corresponding location. This enables continuous dust removal and suction during the cutting process, avoiding the accumulation of dust and slag, ensuring cutting stability, effectively improving the automation level of the overall cleaning operation, avoiding the need to stop the machine to complete dust cleaning, ensuring production continuity, improving production efficiency and capacity, and reducing manual maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure in an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the dust removal component shown in Embodiment 1 of this application.

[0019] Figure 3 This is a schematic diagram of the electrode laser cutting device in Embodiment 3 of this application.

[0020] Marked in the image: 11. Brush; 12. Powder scraper; 21. Cover; 22. Air regulating valve; 23. Inlet; 3. Electrode; 100. Dust removal assembly; 201. Upper roller; 202. Lower roller; 300. Laser generator. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this application, not all embodiments.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0023] Example 1: Please see the appendix Figure 1-2 This application provides a dust removal component, which includes a dust removal part and a dust collection part.

[0024] The dust removal component includes a brush 11, a dust scraper 12, and a drive component. The brush 11 is driven to connect with the drive component and is used to sweep away dust and residue on the roller assembly. The edges of the dust scraper 12 and the brush 11 are in contact. The dust collection component includes a cover 21 and a dust collection power source. The cover 21 and the dust collection power source are connected and the dust removal component is located inside the cover 21.

[0025] In this embodiment, the dust removal component 100 activates the drive unit, causing the brush 11 to rotate. This allows the brush 11 to continuously sweep away dust and debris from the roller assembly, achieving cleaning without stopping the machine. Simultaneously, the dust scraper 12 contacts the edge of the brush 11, causing the dust on the brush 11 to collide with and be released during rotation. The dust is then confined within a cavity by the cover 21. Finally, the dust is sucked from the cover 21 to a designated dust collection point by the suction power source. This enables continuous dust removal and suction during the cutting process, preventing the accumulation of dust and debris, ensuring cutting stability, effectively improving the automation level of the overall cleaning operation, completing dust removal without stopping the machine, ensuring production continuity, improving production efficiency and capacity, and reducing manual maintenance costs.

[0026] Meanwhile, the dust removal component 100 cleans the dust, which can effectively prevent dust and residue from sticking to the edge of the cut and causing secondary burrs, chipping, or edge carbonization after laser cutting. This ensures the consistency of the cutting size of the electrode 3, improves the cleanliness of the edge of the electrode 3, and greatly reduces the risk of alignment deviation and internal short circuit during battery assembly, thus effectively improving the qualification rate and safety performance of battery products.

[0027] In addition, the above-mentioned structure allows for real-time dust removal, preventing dust accumulation and thus eliminating the risk of flammability and explosion caused by excessive dust accumulation containing large amounts of metal shavings and electrode active powder. This significantly reduces the risk of fires, explosions, and other safety accidents, effectively improving the safety of the production site.

[0028] In some embodiments, the suction component includes an intake port 23, and a dust scraper is disposed on the side of the brush near the intake port 23. This arrangement allows the scraped dust particles to directly enter the adsorption range of the intake port 23 within a short distance, significantly reducing the probability of dust dispersion and improving the timeliness and thoroughness of dust collection. Furthermore, close-range adsorption reduces the energy consumption of the suction power source and allows for a compact structural layout.

[0029] In some embodiments, the scraper 12 overlaps with the edge of the brush 11. With this arrangement, when the brush 11 rotates and cleans, the scraper 12 can promptly scrape off the dust and residue adhering to the edge of the brush 11, preventing the brush 11 from losing its cleaning ability due to dust accumulation and ensuring a stable dust removal effect.

[0030] In some embodiments, the brush 11 is detachably connected to the drive component via bolts. This bolted connection ensures a secure and stable assembly between the brush 11 and the drive component, effectively preventing relative displacement or wobbling of the brush 11 due to loosening during high-speed rotation driven by the drive component, thus guaranteeing the accuracy of the brush 11's working trajectory and the consistency of the cleaning effect. Furthermore, the detachable nature of the bolted connection allows for convenient and quick disassembly and assembly of the brush 11 for replacement, maintenance, or cleaning, significantly reducing equipment downtime and lowering maintenance costs.

[0031] Example 2: The difference between this embodiment and Embodiment 1 is that, please refer to... Figure 1 The dust collection component in this embodiment also includes an air regulating valve 22, which is electrically connected to the dust collection power source. This design allows for flexible adjustment of the dust collection intensity based on the amount of dust generated during the laser cutting of the electrode 3, particle size, and operating conditions. This prevents excessive wind speed from causing the electrode 3 to shift or its surface to be damaged, and also prevents insufficient wind speed from causing dust to accumulate in the cutting area, ensuring the stability of the electrode 3 cutting process and achieving good dust removal efficiency.

[0032] Example 3: This embodiment is based on the above embodiment; please refer to [link / reference]. Figure 3 A laser cutting device for electrode 3 is provided, including a roller assembly, a laser generator 300 and a dust removal assembly 100; the roller assembly is used to transport the electrode 3; the laser generator 300 is disposed on one side of the roller assembly and is used to cut the electrode 3; the dust removal assembly 100 is disposed in contact with the roller assembly and is used to remove dust and slag after laser cutting by the laser generator 300, and the dust removal assembly 100 is described above.

[0033] In this embodiment, the electrode sheet 3 is stably transported by the roller assembly, providing a stable working foundation for the laser generator 300 to accurately cut the electrode sheet 3. At the same time, the dust removal component 100 is set in contact with the roller assembly, which can immediately clean the cutting area after the electrode sheet 3 is laser cut. With the synergistic effect of the brush 11, the dust scraper 12 and the dust suction component in the dust removal component 100, the dust and slag generated during cutting can be quickly and thoroughly removed, avoiding the accumulation of dust on the cutting edge, the surface of the electrode sheet 3 or the roller assembly. This ensures the dimensional accuracy and surface cleanliness of the electrode sheet 3, reduces the risk of internal short circuits in the battery caused by dust, improves the product qualification rate, and eliminates the need for frequent shutdowns for cleaning, effectively improving production efficiency.

[0034] In addition, the overall structure realizes the integrated coordination of electrode 3 transmission, laser cutting and dust removal, which is adapted to the high requirements of industrial automated production for stability and continuity, and further promotes the simultaneous improvement of electrode 3 processing quality and capacity.

[0035] In some embodiments, the roller assembly includes an upper roller 201 and a lower roller 202 disposed opposite to each other. A laser cutting area is formed between the upper roller 201 and the lower roller 202, and the laser beam of the laser generator 300 is opposite to the laser cutting area. With this arrangement, the laser beam of the laser generator 300 can be precisely aligned with this area. This not only allows the electrode 3 to remain flat and taut during the cutting process by means of the clamping and supporting action of the upper and lower rollers, effectively avoiding the cutting trajectory deviation caused by the offset and wrinkles of the electrode 3, and ensuring the cutting dimensional accuracy and edge regularity of the electrode 3, but also allows the laser beam to be focused on a fixed cutting area, improving the cutting energy utilization rate and cutting stability, and reducing the heat-affected zone and burr generation.

[0036] Meanwhile, the centralized laser cutting area is precisely aligned with the dust removal component 100, which facilitates the dust removal component 100 to sweep away dust and slag at close range, preventing the spread of debris. Furthermore, the transmission, cutting, and dust removal actions of the upper and lower rollers are coordinated and linked to achieve continuous processing of the electrode sheet 3. Cutting and slag removal can be completed without interrupting the transmission, which significantly improves production efficiency. It is especially suitable for the processing needs of high-precision electrode sheets 3, further ensuring product qualification rate and production continuity.

[0037] In some embodiments, the surfaces of the upper roller 201 and the lower roller 202 are provided with an anti-stick coating. Preferably, the anti-stick coating is any one of a DLC coating, a ceramic coating, a titanium nitride coating, or an ultra-hard anodizing coating. This design allows the upper roller 201 and the lower roller 202 to effectively resist the high temperatures generated during electrode laser cutting, preventing molten slag and dust from adhering to the roller surface and accumulating due to high temperatures. This ensures the cleanliness of the roller surface and prevents adhering debris from scratching or damaging the electrode surface or affecting the flatness of electrode transport, thereby ensuring the regularity and surface quality of the electrode cutting edge. Simultaneously, the anti-stick coating reduces the frictional resistance between the electrode and the roller surface, making electrode transport smoother and more stable, reducing the impact of transport deviation on cutting accuracy, and enhancing the wear resistance and high-temperature resistance of the roller surface. This effectively extends the service life of the upper roller 201 and the lower roller 202, ensuring the overall operational stability of the device and the product qualification rate.

[0038] In some embodiments, the cover 21 is located on the side of the lower roller 202 away from the laser generator 300, and there is a gap between the cover 21 and the lower roller 202. By designing the cover 21 to be located on the side of the lower roller 202 away from the laser generator 300, it can avoid obstructing or interfering with the laser beam path of the laser generator 300, ensuring the accuracy of laser cutting, and can also specifically collect dust and debris falling from the surface of the lower roller 202 and the cutting area, forming a directional collection space. At the same time, the gap reserved between the cover and the lower roller does not hinder the normal rotation of the lower roller and the transmission of the electrode, and can also work with the dust collection component to create a stable negative pressure environment, allowing dust to smoothly enter the suction port 23 inside the cover through the gap, avoiding the accumulation of debris on the roller surface or the cutting area, and also reducing direct friction and wear between the cover and the lower roller, extending the service life of both.

[0039] In this application, 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.

[0040] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In this application, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" a first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Although the description of this application has been made in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A dust removal component, characterized in that, include: The dust removal component includes a brush (11), a scraper (12), and a drive unit. The brush (11) is driven to connect with the drive unit and is used to remove dust and residue from the roller assembly. The scraper (12) and the brush (11) are in contact at their edges. as well as The dust collection component includes a cover (21) and a dust collection power source. The cover (21) and the dust collection power source are connected and the dust collection component is located inside the cover (21).

2. The dust removal component according to claim 1, characterized in that, The dust collection component includes an intake port (23), and the dust scraper (12) is located on the side of the brush (11) near the intake port (23).

3. The dust removal component according to claim 2, characterized in that, The edge of the scraper (12) overlaps with the edge of the brush (11).

4. The dust removal component according to claim 2, characterized in that, The brush (11) is detachably connected to the drive unit by bolts.

5. The dust removal component according to claim 1, characterized in that, The dust collection component also includes an air regulating valve (22), which is electrically connected to the dust collection power source.

6. An electrode laser cutting device, characterized in that, include: Roller assembly for transferring electrode sheets (3); A laser generator (300), located on one side of the roller assembly, is used to cut the electrode sheet (3); and A dust removal assembly (100) is disposed in contact with the roller assembly and is used to remove dust and slag after laser cutting by the laser generator (300). The dust removal assembly (100) according to any one of claims 1-5 is used.

7. The electrode laser cutting apparatus according to claim 6, characterized in that, The roller assembly includes an upper roller (201) and a lower roller (202) arranged opposite to each other. A laser cutting area is formed in the region between the upper roller (201) and the lower roller (202). The laser beam of the laser generator (300) is opposite to the laser cutting area.

8. The electrode laser cutting apparatus according to claim 7, characterized in that, The surfaces of the upper roller (201) and the lower roller (202) are provided with an anti-stick coating.

9. The electrode laser cutting apparatus according to claim 8, characterized in that, The anti-stick coating is any one of DLC coating, ceramic coating, titanium nitride coating, or superhard anodizing coating.

10. The electrode laser cutting apparatus according to claim 7, characterized in that, The cover (21) is located on the side of the lower roller (202) away from the laser generator (300) and has a gap between it and the lower roller (202).

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