Pole piece slitting system

Abstract

The embodiment of the utility model provides a pole piece slitting system, and belongs to the technical field of pole piece processing. The pole piece slitting system comprises a conveying device used for driving a pole piece to move; the laser cutting device is used for cutting under the condition that the unmarked area of the pole piece is conveyed to the first cutting position; the first cleaning assembly is used for cleaning the laser cutting device and the area, located at the first cutting position, of the pole piece; the auxiliary cutter device is used for slitting under the condition that the identification area of the pole piece moves to the second cutting position; and the second cleaning assembly is used for cleaning the auxiliary cutter device and the area, located at the second cutting position, of the pole piece. By means of the structure, the laser cutting device is used in daily cutting operation, the auxiliary cutter device is used only when supplied materials are marked, abrasion and replacement frequency of a cutter are reduced, equipment downtime is shortened, production cost is reduced, safety risks are reduced, production efficiency is improved, accumulation and attachment of impurities such as dust are reduced, and cutting quality is optimized.

Description

Technical Field

[0001] This application relates to the field of electrode processing technology, and more specifically, to an electrode slitting system. Background Technology

[0002] Electrode slitting is a critical step in lithium battery production. Currently, electrode forming technology typically uses laser cutting, while electrode slitting mainly employs mechanical circular cutter cutting. Since the mechanical circular cutter is a consumable part, it becomes dull after a period of production, leading to quality issues such as burrs on the cut edges.

[0003] The common practice is to remove the slitting blade holder, replace it with a new circular blade, readjust the blade, and then test cut until acceptable quality is achieved. However, the entire blade replacement process is not only time-consuming but also poses serious safety issues. Furthermore, the replaced circular blade cannot be reused, which indirectly increases production costs. In addition, the blade replacement process requires machine downtime for maintenance, affecting production efficiency and hindering the advancement of unmanned factories. Utility Model Content

[0004] This application provides an electrode slitting system that reduces cutter wear and replacement frequency, lowers operator safety risks, and improves production efficiency.

[0005] In a first aspect, embodiments of this application provide an electrode slitting system, comprising:

[0006] A conveying device is used to drive the electrode sheets to travel on the conveyor belt;

[0007] A laser cutting device for slitting an electrode sheet in an unmarked area as it is moved to a first cutting position;

[0008] A first cleaning component is used to clean the laser cutting device and the area of ​​the electrode located at the first cutting position;

[0009] An auxiliary cutting device is used to cut the electrode as it travels from the marked area to the second cutting position.

[0010] The second cleaning component is used to clean the auxiliary cutting device and the area of ​​the electrode located at the second cutting position.

[0011] In the above technical solution, by using a laser cutting device as the primary cutting method and an auxiliary cutting device as the secondary cutting method, the laser cutting device is used in daily cutting operations, and the auxiliary cutting device is only used when the incoming material is marked. This reduces the wear and replacement frequency of the cutting device, reduces equipment downtime and production costs, thereby reducing the safety risks to operators and significantly improving production efficiency. This, in turn, enhances the stability of the entire electrode slitting system, facilitating the advancement of unmanned factories. On the other hand, by setting up a first cleaning component and a second cleaning component, the accumulation and adhesion of dust and other impurities in the laser cutting device, the auxiliary cutting device, and the electrode are effectively reduced, thereby optimizing the cutting quality. Furthermore, by integrating laser cutting and mechanical cutting, the electrode slitting system can flexibly cope with different types of electrode materials and processing requirements, thereby enhancing the versatility and adaptability of the electrode slitting system.

[0012] In some embodiments, the first cleaning component includes:

[0013] A first protective cover is installed over the first cutting position and has an opening for avoiding laser beams;

[0014] A blower mechanism and a first dust suction mechanism are installed on the first protective cover. The air outlet of the blower mechanism is adapted to face the front of the electrode sheet, and the first dust suction mechanism is used to suck up dust from the front of the area of ​​the electrode sheet located at the first cutting position.

[0015] In some embodiments, the laser cutting apparatus includes:

[0016] A laser head, at least partially housed within the first protective shield, is used to emit a laser.

[0017] The first moving module is used to adjust the height of the laser head;

[0018] The second moving module is used to adjust the cutting position of the laser head on the electrode.

[0019] In some embodiments, the first cleaning component further includes:

[0020] The second dust-collecting structure is installed inside the first protective cover and surrounds the laser head to collect dust from the laser head.

[0021] In some embodiments, the first cleaning component further includes:

[0022] The third dust extraction structure is located below the first cutting position and is used to extract dust from the reverse side of the area of ​​the electrode located at the first cutting position.

[0023] In some embodiments, the second cleaning component includes:

[0024] The fourth dust-collecting structure is located above the second cutting position and is used to collect dust from the front of the area of ​​the electrode located at the second cutting position.

[0025] In some embodiments, the second cleaning component further includes:

[0026] The fifth dust extraction structure is located below the second cutting position and is used to extract dust from the reverse side of the area of ​​the electrode located at the second cutting position.

[0027] In some embodiments, the auxiliary cutter device includes:

[0028] A cutting blade, used to cut the electrode sheet;

[0029] A first driving mechanism is used to drive the cutter to translate so that the cutting line of the auxiliary cutter device is aligned with the cutting line of the laser cutting device;

[0030] The second drive mechanism is used to drive the cutter to rise and fall to adjust the cutting depth of the cutter.

[0031] In some embodiments, the second cleaning component further includes:

[0032] The scraping mechanism includes a second protective cover and a wiping component disposed on the second protective cover. The second protective cover covers the cutter, and the wiping component is disposed close to the cutter to remove the adhering material on the cutter during the rotation of the cutter.

[0033] In some embodiments, the electrode slitting system further includes:

[0034] A support member, located at the second cutting position, is used to support the electrode sheet to smooth out the tabs of the electrode sheet.

[0035] In some embodiments, the auxiliary cutting device is located upstream of the laser cutting device, and the conveying device includes:

[0036] An unwinding mechanism, located upstream of the auxiliary cutter device, is used to unwind the electrode sheet roll.

[0037] A winding mechanism, located downstream of the laser cutting device, includes multiple winding shafts spaced apart, which are used to wind up the multiple segments formed after the electrode sheet is cut.

[0038] A tensioning mechanism, located at the first cutting position, includes a plurality of pivotable guide rollers spaced apart along the belt conveyor direction, the plurality of guide rollers being configured to tension the cut surface of the electrode sheet when they are lifted synchronously. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is one of the structural schematic diagrams of an electrode slitting system provided in some embodiments of this application;

[0041] Figure 2 This is a second schematic diagram of the structure of the electrode slitting system provided in some embodiments of this application;

[0042] Figure 3 This is the third schematic diagram of the structure of the electrode slitting system provided in some embodiments of this application;

[0043] Figure 4 Schematic diagrams of the laser cutting apparatus, blower mechanism, first dust collection mechanism, and first protective cover provided in some embodiments of this application;

[0044] Figure 5 This is a schematic diagram of the structure of the laser cutting apparatus and the first protective cover provided in some embodiments of this application;

[0045] Figure 6 A schematic diagram of the auxiliary cutter device, support member, and second cleaning component provided in some embodiments of this application;

[0046] Figure 7 This is a schematic diagram of the auxiliary cutter device, support member, and fifth dust collection structure provided in some embodiments of this application.

[0047] Figure label:

[0048] Electrode slitting system 10;

[0049] Unwinding mechanism 11, tensioning mechanism 12, guide roller 121;

[0050] Laser cutting device 13, first moving module 131, second moving module 132, laser head 133;

[0051] First cleaning component 14, blower mechanism 141, first vacuuming mechanism 142, first protective cover 143, third vacuuming structure 144.

[0052] Auxiliary cutting device 15, cutting blade 151, first drive mechanism 152, second drive mechanism 153, bracket 154, roller 155, support member 16;

[0053] Second cleaning component 17, fourth dust suction structure 171, fifth dust suction structure 172, scraping mechanism 173, second protective cover 1731, wiping component 1732;

[0054] Rewinding mechanism 18, rewinding shaft 181;

[0055] Electrode 20. Detailed Implementation

[0056] 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 described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0058] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication 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.

[0060] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0061] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0062] In the lithium battery manufacturing process, precise electrode cutting is one of the key steps to ensure battery performance. In traditional processes, electrode tab forming often uses laser cutting technology, while electrode cutting generally relies on mechanical circular cutters. However, as a consumable part, the mechanical circular cutter gradually dulls during use, causing burrs to form on the cutting edges and affecting product quality.

[0063] The inventors discovered that to maintain cutting quality, it is necessary to regularly replace the circular blade and perform blade adjustments and test cuts. However, this process is not only time-consuming and poses safety hazards, but the replaced blades are often unusable, increasing production costs. Furthermore, downtime for maintenance reduces production efficiency and hinders the promotion of unmanned production lines. Therefore, in related technologies, laser cutting technology is also used for electrode slitting. While this eliminates the need for blade replacement and other maintenance, when the cutting area has special markings, such as labels or tape, laser cutting can easily fail to cut through them.

[0064] Based on the above considerations, and to address the issues of frequent blade changes and maintenance required when using mechanical rotary blades to cut electrode sheets, and the tendency for laser cutting technology to fail to cut through specially marked areas, the inventors, after in-depth research, designed an electrode sheet cutting system, including: a conveying device, a laser cutting device, a first cleaning component, an auxiliary cutting device, and a second cleaning component. The conveying device drives the electrode sheet along a conveyor belt; the laser cutting device performs laser cutting when the unmarked area of ​​the electrode sheet is moved to the first cutting position; the first cleaning component cleans the laser cutting device and the area of ​​the electrode sheet located at the first cutting position; the auxiliary cutting device performs mechanical cutting when the marked area of ​​the electrode sheet is moved to the second cutting position; and the second cleaning component cleans the auxiliary cutting device and the area of ​​the electrode sheet located at the second cutting position.

[0065] In this electrode slitting system, a laser cutting device combined with an auxiliary cutting device works in tandem to complete the electrode slitting operation. This structure utilizes the laser cutting device in routine cutting operations, only using the auxiliary cutting device when the incoming material is marked. This avoids frequent downtime for maintenance and tool replacement, reducing equipment downtime, lowering operator safety risks, and significantly improving production efficiency. This, in turn, enhances the stability of the entire electrode slitting system, facilitating the advancement of unmanned factories. Furthermore, the inclusion of first and second cleaning components enables timely cleaning of the laser cutting device, auxiliary cutting device, and electrode during the cutting process, effectively reducing the accumulation and adhesion of dust and other impurities, thereby optimizing slitting accuracy and electrode quality. Finally, by integrating laser cutting and mechanical cutting, this electrode slitting system can flexibly handle different types of electrode materials and processing requirements, thus enhancing its versatility and adaptability.

[0066] According to some embodiments of this application, refer to Figures 1-3 As shown, this application provides an electrode slitting system 10, which includes: a conveying device, a laser cutting device 13, a first cleaning component 14, an auxiliary cutting device 15, and a second cleaning component 17. The conveying device is used to drive the electrode 20 to move along the conveyor belt; the laser cutting device 13 is used to slit the electrode 20 when the unmarked area is moved to the first cutting position; the first cleaning component 14 is used to clean the laser cutting device 13 and the area of ​​the electrode 20 located at the first cutting position; the auxiliary cutting device 15 is used to slit the electrode 20 when the marked area is moved to the second cutting position; and the second cleaning component 17 is used to clean the auxiliary cutting device 15 and the area of ​​the electrode 20 located at the second cutting position.

[0067] The conveying device can be a roller conveyor or a belt conveyor, etc., and the embodiments of this application do not limit it.

[0068] The laser cutting device 13 can be a pulsed fiber laser or a carbon dioxide laser, etc. The first cleaning component 14 can include, but is not limited to, a dust collection device, an air blowing device, a wiping device (such as a brush, a lint-free cloth, etc.), an ultrasonic cleaning device, or an electrostatic cleaning device, etc. The embodiments of this application do not limit this.

[0069] The auxiliary cutting device 15 can be a mechanical circular blade, a blade-type cutter, or a shearing cutter, etc. The second cleaning component 17 can include, but is not limited to, a vacuuming device, an air blowing device, or a wiping device (such as a brush, a lint-free cloth, etc.), an ultrasonic cleaning device, or an electrostatic cleaning device, etc. The embodiments of this application do not limit this.

[0070] It should be noted that receiving materials with unmarked areas is a common occurrence, while receiving materials with marked areas is a rare occurrence. The marked areas of the electrode 20 are covered with adhesive. The marked areas of the electrode 20 can usually be distributed at the beginning, end, or splicing position of the electrode 20. The adhesive can be, but is not limited to, tape or labels, and can be in a conspicuous color, such as yellow.

[0071] In actual implementation, refer to Figures 1-3 As shown, the conveying device starts, driving the electrode 20 to move along the conveying direction. During the conveying process, the position and marked area of ​​the electrode 20 can be detected by sensors or a vision system, providing positioning information for subsequent cutting operations. When the unmarked area of ​​the electrode 20 reaches the first cutting position, the laser cutting device 13 starts. The laser cutting device 13 can perform laser cutting on the unmarked area of ​​the electrode 20 according to preset cutting parameters. At the same time, the first cleaning component 14 starts working, cleaning the laser cutting device 13 and the first cutting position area of ​​the electrode 20 to remove dust and impurities generated during the laser cutting process. When the marked area of ​​the electrode 20 reaches the second cutting position, the auxiliary cutting device 15 starts. The auxiliary cutting device 15 performs mechanical cutting according to the shape and size of the marked area of ​​the electrode 20. At the same time, the second cleaning component 17 starts working, cleaning the auxiliary cutting device 15 and the second cutting position area of ​​the electrode 20 to remove debris and dust generated during the mechanical cutting process.

[0072] The electrode slitting system 10 provided in this application embodiment adopts a laser cutting device 13 as the main cutting method and an auxiliary cutting device 15 as the secondary cutting method. On the one hand, the laser cutting device 13 is used in daily cutting operations, and the auxiliary cutting device 15 is only used when the incoming material is marked. This reduces the wear and replacement frequency of the cutting device 151, reduces equipment downtime and production costs, thereby reducing the safety risks to operators and significantly improving production efficiency. This, in turn, improves the stability of the entire electrode slitting system 10, facilitating the advancement of unmanned factories. On the other hand, by setting up a first cleaning component 14 and a second cleaning component 17, the accumulation and adhesion of dust and other impurities on the laser cutting device 13, the auxiliary cutting device 15, and the electrode 20 are effectively reduced, thereby optimizing the cutting quality. Furthermore, by integrating laser cutting and mechanical cutting, the electrode slitting system 10 can flexibly cope with different types of electrode 20 materials and processing requirements, thereby enhancing the versatility and adaptability of the electrode slitting system 10.

[0073] According to some embodiments of this application, refer to Figure 3 and further refer to Figure 4 The first cleaning component 14 includes: a first protective cover 143, a blower mechanism 141, and a first vacuuming mechanism 142.

[0074] A first protective cover 143 is provided on the first cutting position, and the first protective cover 143 has an opening for avoiding laser; a blower mechanism 141 and a first dust suction mechanism 142 are installed on the first protective cover 143, the air outlet of the blower mechanism 141 is adapted to face the front of the electrode 20, and the first dust suction mechanism 142 is used to suck up the dust on the front of the area of ​​the electrode 20 located at the first cutting position.

[0075] The first protective cover 143 is installed around the front of the area of ​​the electrode 20 located at the first cutting position to minimize dust leakage. The open portion of the first protective cover 143 is located above the electrode 20 and corresponds to the laser emission direction of the laser cutting device 13 so that the laser can pass smoothly through the open portion to cut the electrode 20.

[0076] The blower mechanism 141 may include, but is not limited to, a high-pressure blower with a nozzle, a vortex blower with an air knife, or an air compressor with an air duct, etc., and the embodiments of this application do not limit it.

[0077] The first dust collection mechanism 142 may include, but is not limited to, a vacuum cleaner or a negative pressure suction system, etc., and the embodiments of this application do not limit it.

[0078] In this embodiment, refer to Figure 3 and further refer to Figure 4 The blower mechanism 141 and the first dust collection mechanism 142 can be respectively installed on both sides of the first protective cover 143 along the conveyor belt direction. The blower mechanism 141 can include at least an air source and an air knife, and the first dust collection mechanism 142 can include at least a dust collection pipe, a dust collection power source, and a dust collection device. The dust collection port of the dust collection pipe can face the front of the electrode 20. For example, when the unmarked area of ​​the electrode 20 is conveyed to the first cutting position, the laser cutting device 13 is activated to perform laser cutting. The blower mechanism 141 is activated simultaneously, and the high-speed airflow generated by the air source can be blown towards the front of the electrode 20 through the air knife, blowing away the dust and debris generated during the cutting process from the front of the electrode 20. The first dust collection mechanism 142 is activated simultaneously, and a negative pressure is formed inside the first protective cover 143 through the dust collection power source and the dust collection pipe, thereby sucking the dust and impurities blown by the blower mechanism 141 into the dust collection pipe. Finally, the sucked-in dust and other impurities can enter the dust collection device, and the dust in the dust collection device can be cleaned periodically to maintain dust collection efficiency.

[0079] The electrode cutting system 10 provided in this application embodiment, through the coordinated operation of the aforementioned blower mechanism 141 and the first dust suction mechanism 142, blows dust up, making it easier for the dust to be sucked away by the first dust suction mechanism 142. This can efficiently remove dust and debris from the unmarked front area of ​​the electrode 20, greatly improving cleaning efficiency and maintaining the cleanliness of the front of the electrode 20, thereby improving the quality of subsequent processing steps. Combined with the setting of the first protective cover 143, a relatively closed space can be formed at the first cutting position, preventing dust from spreading to the surrounding environment. This not only protects the environment of the production workshop but also reduces the negative impact of dust on other equipment and operators.

[0080] According to some embodiments of this application, refer to Figure 5 The laser cutting device 13 includes: a laser head 133, a first moving module 131, and a second moving module 132.

[0081] The laser head 133 is at least partially disposed inside the first protective cover 143 and is used to emit laser light; the first moving module 131 is used to adjust the height of the laser head 133; and the second moving module 132 is used to adjust the cutting position of the laser head 133 on the electrode 20.

[0082] Reference Figure 5 The laser head 133 can be vertically inserted into the top of the first protective cover 143, and the bottom of the first protective cover 143 can be provided with the above-mentioned opening to avoid the laser emitted by the laser head 133.

[0083] The first moving module 131 can be driven by a motor, cylinder or hydraulic cylinder as a power source, and the second moving module 132 can be driven by a motor, cylinder or hydraulic cylinder as a power source. This application embodiment does not limit this.

[0084] In actual implementation, refer to Figure 5 When the unmarked area of ​​electrode 20 reaches the first cutting position, the laser cutting device 13 prepares for operation. The first moving module 131 is activated, adjusting the laser head 133 to the optimal cutting height. The second moving module 132 is activated, precisely adjusting the cutting position of the laser head 133 on the electrode 20 along the width direction according to the preset cutting path and die width. After the position of the laser head 133 is adjusted, the laser head 133 emits laser light to begin cutting the electrode 20. During the cutting process, the first moving module 131 and the second moving module 132 may need to be fine-tuned according to the actual situation to maintain cutting quality and stability. After the cutting is completed, the first moving module 131 and the second moving module 132 are reset, and the laser head 133 stops emitting laser light.

[0085] The electrode slitting system 10 provided in this application embodiment, through the above-mentioned laser head 133, first moving module 131 and second moving module 132, the first moving module 131 enables the laser head 133 to reach the optimal cutting height, maintaining the consistency of laser beam focusing effect and cutting depth, and the second moving module 132 can precisely adjust the cutting position of the laser head 133 on the electrode 20, so that the slitting die width is kept as consistent as possible, reducing the cutting error caused by the cutting position deviation, thereby achieving high-quality cutting and improving the cutting quality.

[0086] According to some embodiments of this application, the first cleaning component 14 further includes a second dust-collecting structure.

[0087] The second dust-collecting structure is installed inside the first protective cover 143 and surrounds the outside of the laser head 133. The second dust-collecting structure is used to suck up the dust on the laser head 133.

[0088] The second dust collection mechanism may include, but is not limited to, a vacuum cleaner or a negative pressure suction system, etc., and the embodiments of this application do not limit it.

[0089] In this embodiment, the second dust collection mechanism may include at least a dust collection pipe, a dust collection power source, and a dust collection device. The laser head 133 may be conical, and the dust collection pipe may be designed as an annular ring, surrounding the laser head 133. The dust collection port may be located inside the dust collection pipe and close to the surface of the laser head 133, and adopt a micro-hole design to increase the dust collection area, thereby comprehensively sucking up dust on the laser head 133 and improving dust collection efficiency.

[0090] The electrode slitting system 10 provided in this application embodiment, through the setting of the second dust suction structure, which surrounds the laser head 133, can timely suck up the dust on the laser head 133, keep the laser head 133 clean, reduce the risk of the laser focusing and transmission efficiency being affected by dust adhering to the optical elements of the laser head 133, thereby reducing the cutting deviation or damage to the laser head 133 caused by dust interference, thereby improving the cutting accuracy and quality, and extending the service life of the laser cutting device 13.

[0091] According to some embodiments of this application, refer to Figure 3 The first cleaning component 14 also includes a third suction structure 144.

[0092] The third dust suction structure 144 is located below the first cutting position. The third dust suction structure 144 is used to suck up the dust on the reverse side of the area of ​​the electrode 20 located at the first cutting position.

[0093] The third dust collection mechanism may include, but is not limited to, a vacuum cleaner or a negative pressure suction system, etc., and the embodiments of this application do not limit it.

[0094] In this embodiment, refer to Figure 3 The third dust collection mechanism may include at least a dust collection pipe, a dust collection power source, and a dust collection device. The dust collection port of the dust collection pipe faces the reverse side of the electrode 20 located at the first cutting position. Before the laser cutting device 13 starts working, the third dust collection structure 144 can be started simultaneously to prepare to collect the dust falling from the reverse side of the electrode 20. The laser head 133 starts emitting laser to cut the electrode 20. At the same time, the third dust collection structure 144 continuously sucks up the dust falling from the reverse side of the electrode 20 through the dust collection power source and the dust collection pipe. The dust sucked up can enter the dust collection device. The dust in the dust collection device can be cleaned periodically to maintain dust collection efficiency.

[0095] The electrode slitting system 10 provided in this application embodiment, through the setting of the third dust suction structure 144, combined with the aforementioned blower mechanism 141, first dust suction mechanism 142 and second dust suction mechanism, mainly targets the front of the unmarked area of ​​the electrode 20 and the laser head 133 for dust removal. The addition of the third dust suction structure 144 enables dust removal on the back of the unmarked area of ​​the electrode 20 during the laser cutting process, so that both the front and back of the laser head 133 and the unmarked area of ​​the electrode 20 can be kept clean during the laser cutting process, reducing dust residue on the surface of the unmarked area of ​​the electrode 20, providing a better foundation for subsequent processing, improving the quality of battery products, and forming an all-round cleaning system, further improving the overall cleaning effect of the electrode slitting system 10.

[0096] According to some embodiments of this application, refer to Figure 3 and further refer to Figure 6 The second cleaning component 17 includes: a fourth suction structure 171.

[0097] The fourth dust suction structure 171 is located above the second cutting position. The fourth dust suction structure 171 is used to suction dust from the front of the area of ​​the electrode 20 located at the second cutting position.

[0098] The fourth dust collection mechanism may include, but is not limited to, a vacuum cleaner or a negative pressure suction system, etc., and the embodiments of this application do not limit it.

[0099] In this embodiment, refer to Figure 3 and further refer to Figure 6The fourth dust collection mechanism may include at least a dust collection pipe, a dust collection power source, and a dust collection device. The dust collection port of the dust collection pipe faces the front of the electrode 20 located at the second cutting position. Before the auxiliary cutting device 15 starts working, the fourth dust collection structure 171 can be started simultaneously to prepare to collect the dust and debris that may be generated on the front of the electrode 20 when the auxiliary cutting device 151 is cutting. The cutting blade 151 of the auxiliary cutting device 15 starts cutting the electrode 20. At the same time, the fourth dust collection structure 171 continuously draws the dust and debris on the front of the electrode 20 into the dust collection pipe through the dust collection power source. The dust that is finally sucked in can enter the dust collection device. The dust in the dust collection device can be cleaned periodically to maintain the dust collection efficiency.

[0100] The electrode slitting system 10 provided in this application embodiment, through the setting of the fourth dust suction structure 171, can promptly remove dust and debris from the front of the marked area of ​​the electrode 20 during the mechanical slitting process, thereby reducing the contamination and scratches of dust on the front of the marked area of ​​the electrode 20, greatly improving cleaning efficiency, maintaining the cleanliness of the front of the electrode 20, and thus helping to improve the quality of subsequent processing steps.

[0101] According to some embodiments of this application, refer to Figure 3 , Figure 6 and Figure 7 As shown, the second cleaning component 17 also includes a fifth suction structure 172.

[0102] The fifth dust extraction structure 172 is located below the second cutting position. The fifth dust extraction structure 172 is used to extract dust from the reverse side of the area of ​​the electrode 20 located at the second cutting position.

[0103] The fifth dust collection mechanism may include, but is not limited to, a vacuum cleaner or a negative pressure suction system, etc., and the embodiments of this application do not limit it.

[0104] In this embodiment, refer to Figure 3 , Figure 6 and Figure 7 As shown, the fifth suction mechanism may include at least a suction pipe, a suction power source, and a dust collection device. The suction port of the suction pipe faces the reverse side of the electrode 20 located at the second cutting position. Before the auxiliary cutting device 15 starts working, the fifth suction structure 172 can be started simultaneously to prepare to collect dust and debris falling from the reverse side of the electrode 20. The cutter 151 of the auxiliary cutting device 15 starts cutting the electrode 20. At the same time, the fifth suction structure 172 continuously sucks up the dust falling from the reverse side of the electrode 20 through the suction power source and the suction pipe. The dust sucked up can enter the dust collection device. The dust in the dust collection device can be cleaned periodically to maintain suction efficiency.

[0105] The electrode cutting system 10 provided in this application embodiment, through the setting of the fifth dust suction structure 172, combined with the aforementioned fourth dust suction mechanism which mainly targets the front side of the marked area of ​​the electrode 20 for dust removal, the addition of the fifth dust suction structure 172 enables dust removal on the back side of the marked area of ​​the electrode 20 during the mechanical cutting process, so that both sides of the marked area of ​​the electrode 20 can be kept clean during the mechanical cutting process, reducing the dust residue on the surface of the marked area of ​​the electrode 20, providing a better foundation for subsequent processing, and improving the quality of battery products.

[0106] According to some embodiments of this application, refer to Figure 6 and further refer to Figure 7 The auxiliary cutting device 15 includes: a cutting blade 151, a first driving mechanism 152, and a second driving mechanism 153.

[0107] The cutter 151 is used to cut the electrode 20; the first drive mechanism 152 is used to drive the cutter 151 to translate so that the cutting line of the auxiliary cutter device 15 is aligned with the cutting line of the laser cutting device 13; the second drive mechanism 153 is used to drive the cutter 151 to rise and fall to adjust the cutting depth of the cutter 151.

[0108] The cutter 151 can be designed as fixed or movable, and the movable cutter 151 can be designed as either actively driven or passively driven.

[0109] For example, in some embodiments, the cutter 151 is designed to be passively driven, and the cutter 151 is driven to rotate during the conveyor belt movement.

[0110] For example, in some other embodiments, the cutter 151 is designed to be actively driven. The cutter 151 can be powered to the output of a power source, which can be a motor or other driving components, and the cutter 151 is driven to rotate autonomously by the power source.

[0111] The first drive mechanism 152 may include, but is not limited to, a motor, a cylinder or a hydraulic cylinder, and the second drive mechanism 153 may include, but is not limited to, a motor, a cylinder or a hydraulic cylinder. This application embodiment does not limit this.

[0112] In actual implementation, refer to Figure 6 and further refer to Figure 7During normal use, the auxiliary cutting device 15 is in a stopped state, and the second drive mechanism 153 drives the cutter 151 to remain in the raised position without contacting the electrode 20. When the marked area of ​​the electrode 20 moves to the second cutting position, the auxiliary cutting device 15 prepares to work, the first drive mechanism 152 is activated, and the cutter 151 is driven to move horizontally in the width direction of the electrode 20 until it is aligned with the cutting line of the laser cutting device 13. The alignment process can be monitored and adjusted in real time by sensors or a vision system. The second drive mechanism 153 is activated, and the cutter 151 is driven to press down according to the preset target cutting depth based on the thickness of the electrode 20 and the cutting requirements.

[0113] The electrode slitting system 10 provided in this application embodiment, through the above-mentioned cutting blade 151, first driving mechanism 152 and second driving mechanism 153, the first driving mechanism 152 can accurately control the cutting line of the marked area of ​​the electrode 20 to align with the cutting line of the unmarked area of ​​the electrode 20, which can effectively reduce quality problems such as slitting and wire pulling caused by cutting line misalignment, significantly improve cutting accuracy, thereby maintaining the high quality and consistency of electrode 20 slitting, and reducing the defect rate caused by cutting quality problems.

[0114] According to some embodiments of this application, refer to Figure 3 and further refer to Figure 6 The second cleaning component 17 also includes a scraping mechanism 173.

[0115] The scraping mechanism 173 includes a second protective cover 1731 and a wiping component 1732 disposed on the second protective cover 1731. The second protective cover 1731 covers the cutter 151 of the auxiliary cutter device 15. The wiping component 1732 is disposed close to the cutter 151 and is used to remove the adhering material on the cutter 151 during the rotation of the cutter 151.

[0116] The wiping component 1732 may include, but is not limited to, wool felt, nylon brush or rubber scraper, etc., and the embodiments of this application do not limit it.

[0117] In this embodiment, refer to Figure 6The auxiliary cutter 151 also includes a bracket 154 and a roller 155. The roller 155 is pivotally supported on the bracket 154. The cutter 151 is installed at the middle position of the roller 155 along the axial direction. The roller 155 can be actively driven or passively driven. The roller 121 rotates, thereby driving the cutter 151 on it to rotate and cut. The second protective cover 1731 is installed on the bracket 154 and is located on the side of the roller 155 away from the laser cutting device 13. It is used to cover the exposed part of the cutter 151 to reduce the risk of serious safety accidents caused by direct contact between relevant operators and the cutter 151. The fourth dust collection mechanism is installed on the second protective cover 1731 and is located adjacent to the wiping component 1732 but without interference.

[0118] In actual implementation, refer to Figure 6 During the mechanical cutting of the marked area of ​​the electrode 20 by the auxiliary cutting device 15, the cutter 151 rotates continuously under the drive of the roller 155, and the wiping surface of the wiping component 1732 is in continuous contact with the surface of the cutter 151. Deposits on the surface of the cutter 151, such as dust, debris, and sticky substances generated during the cutting of the marked area of ​​the electrode 20, are scraped and carried away by the wiping component 1732. As the cutter 151 continues to rotate, the wiping component 1732 maintains close contact with the surface of the cutter 151.

[0119] The electrode slitting system 10 provided in this application embodiment, through the aforementioned scraping mechanism 173, enables real-time cleaning of the deposits on the cutter 151 during the mechanical cutting process. This reduces problems such as uneven cutting surfaces and burrs caused by contamination of the cutter 151, significantly improving cutting quality. It also reduces the problem of secondary contamination of the electrode 20 by the deposits during the cutting process, and reduces the erosion and wear of the cutter 151 by the deposits, which helps to extend the service life of the cutter 151 and reduce replacement costs.

[0120] According to some embodiments of this application, refer to Figures 1-3 , Figure 6 and Figure 7 As shown, the electrode slitting system 10 also includes a support member 16.

[0121] The support member 16 is located at the second cutting position and is used to support the electrode 20 to smooth the tab of the electrode 20.

[0122] The support member 16 can be designed as a plate structure, specifically a flat plate or a bent plate, etc., but this application embodiment does not limit it.

[0123] In this embodiment, refer to Figures 1-3 , Figure 6 and Figure 7As shown, the support member 16 can provide full support along the width direction of the electrode 20. The support member 16 can be designed as a bent plate and spaced a certain distance from the electrode 20, thereby causing the main body of the electrode 20 to bend slightly downward to provide the best support force. Under the combined action of its own weight and the support force, the electrode tab is flattened. During the mechanical cutting process, the support member 16 continuously supports the electrode 20, so that the electrode tab is always kept flat and the risk of the electrode tab collapsing into a crescent shape is reduced.

[0124] It should be noted that, referring to Figure 7 The fifth suction structure 172 of the second cleaning component 17 and the first drive mechanism 152 and the second drive mechanism 153 of the auxiliary cutter device 15 are installed on the bottom of the support member 16. The specific installation method may include, but is not limited to, threaded connection, welding or snap-fit, etc., and this application embodiment does not limit this.

[0125] The electrode cutting system 10 provided in this application embodiment can effectively smooth out the tab portion of the electrode 20 through the setting of the support member 16, reduce the risk of the tab collapsing into a crescent shape during the cutting process, maintain the flatness and consistency of the tab, reduce the deformation and wrinkles of the tab during the cutting process, and help improve the cutting accuracy and quality, and reduce the product defect rate caused by tab problems.

[0126] According to some embodiments of this application, refer to Figures 1-3 As shown, the auxiliary cutting device 15 is located upstream of the laser cutting device 13, and the conveying device includes: an unwinding mechanism 11, a winding mechanism 18, and a tensioning mechanism 12.

[0127] The unwinding mechanism 11 is located upstream of the auxiliary cutter device 15 and is used to unwind the electrode sheet 20 roll. The winding mechanism 18 is located downstream of the laser cutting device 13 and includes a plurality of winding shafts 181 spaced apart. The plurality of winding shafts 181 are used to wind up the multiple segments formed after the electrode sheet 20 is cut. The tensioning mechanism 12 is located at the first cutting position and includes a plurality of pivotable guide rollers 121 spaced apart along the belt conveyor direction. The plurality of guide rollers 121 are configured to tension the cut surface of the electrode sheet 20 when they are lifted synchronously.

[0128] "Multiple" here means two or more.

[0129] For example, refer to Figures 1-3 As shown, the electrode 20 is cut into two segments, and the winding mechanism 18 includes two winding shafts 181 spaced apart. The two winding shafts 181 completely separate the two segments formed after cutting and wind them up separately.

[0130] In actual operation, the electrode 20 is wound onto the unwinding mechanism 11. The unwinding mechanism 11 is activated, smoothly unwinding the electrode 20. The electrode 20 moves along the conveyor belt direction and reaches the auxiliary cutter device 15. Under normal circumstances, the auxiliary cutter device 15 is raised and does not contact the electrode 20, allowing the electrode 20 to pass directly. When it is necessary to cut the marked area of ​​the electrode 20, the auxiliary cutter device 15 is pressed down, activating the first drive mechanism 152 and the second drive mechanism 153. This adjusts the position and cutting depth of the cutter 151 to cut the marked area of ​​the electrode 20. Simultaneously, the second cleaning component 17 is activated to clean the cutter 151 and both sides of the marked area of ​​the electrode 20. The electrode 20 moves along the conveyor belt and reaches the laser cutting device 13. If the incoming material is a marked area that has already been cut by the auxiliary cutting device 15, it passes directly through. If the incoming material is a marked area, the multiple rollers 121 of the tensioning mechanism 12 can be raised synchronously to tension the cutting surface of the electrode 20, so that the electrode 20 remains flat during the laser cutting process. The laser cutting device 13 is started to laser cut the electrode 20. At the same time, the first cleaning component 14 is started to clean the laser head 133 and the front and back of the unmarked area of ​​the electrode 20. The cut electrode 20 segments are conveyed to the winding mechanism 18. The multiple winding shafts 181 of the winding mechanism 18 are started to wind up the cut electrode 20 segments respectively.

[0131] The electrode slitting system 10 provided in this application embodiment, through the above-mentioned unwinding mechanism 11, winding mechanism 18 and tensioning mechanism 12, achieves precise and stable belt conveying of the electrode 20 during the slitting process. The tensioning mechanism 12 synchronously lifts the roller 121 at the first cutting position to tension the cutting surface of the electrode 20, effectively reducing the displacement and shaking of the electrode 20 caused by slack during laser cutting, improving cutting accuracy, reducing cutting defects, and thus improving the yield of the electrode 20. In addition, considering the low usage frequency of the auxiliary cutting device 15, by arranging the auxiliary cutting device 15 upstream of the laser cutting device 13, the auxiliary cutting device 15 will not interfere with the separation angle between the multiple segments formed after laser slitting of the electrode 20, further improving the yield of the electrode 20.

[0132] According to some embodiments of this application, see Figures 1-7As shown, this application provides an electrode slitting system 10, including: a conveying device, a laser cutting device 13, a first cleaning component 14, an auxiliary cutting device 15, and a second cleaning component 17. The conveying device is used to drive the electrode 20 to move along the conveyor belt; the laser cutting device 13 is used to slit the electrode 20 when the unmarked area is moved to the first cutting position; the first cleaning component 14 is used to clean the laser cutting device 13 and the area of ​​the electrode 20 located at the first cutting position; the auxiliary cutting device 15 is used to slit the electrode 20 when the marked area is moved to the second cutting position; and the second cleaning component 17 is used to clean the auxiliary cutting device 15 and the area of ​​the electrode 20 located at the second cutting position. The first cleaning component 14 includes: a first protective cover 143, a blower mechanism 141, and a first dust suction mechanism 142. The first protective cover 143 is disposed over the first cutting position and has an opening for avoiding laser beams. The blower mechanism 141 and the first dust suction mechanism 142 are mounted on the first protective cover 143. The air outlet of the blower mechanism 141 is adapted to face the front of the electrode 20. The first dust suction mechanism 142 is used to suck up dust from the front of the area of ​​the electrode 20 located at the first cutting position. The laser cutting device 13 includes: a laser head 133, a first moving module 131, and a second moving module 132. The laser head 133 is at least partially disposed inside the first protective cover 143 and is used to emit laser beams. The first moving module 131 is used to adjust the height of the laser head 133. The second moving module 132 is used to adjust the cutting position of the laser head 133 on the electrode 20. The first cleaning component 14 further includes: a second dust-collecting structure, which is installed inside the first protective cover 143 and surrounds the laser head 133, for collecting dust from the laser head 133. The first cleaning component 14 also includes: a third dust-collecting structure 144, which is located below the first cutting position and is used to collect dust from the reverse side of the area of ​​the electrode 20 located at the first cutting position. The second cleaning component 17 includes: a fourth dust-collecting structure 171, which is located above the second cutting position and is used to collect dust from the front side of the area of ​​the electrode 20 located at the second cutting position. The second cleaning component 17 also includes: a fifth dust-collecting structure 172, which is located below the second cutting position and is used to collect dust from the reverse side of the area of ​​the electrode 20 located at the second cutting position. The auxiliary cutting device 15 includes a cutting blade 151, a first driving mechanism 152, and a second driving mechanism 153. The cutting blade 151 is used to cut the electrode sheet 20. The first driving mechanism 152 is used to drive the cutting blade 151 to translate so that the cutting line of the auxiliary cutting device 15 is aligned with the cutting line of the laser cutting device 13. The second driving mechanism 153 is used to drive the cutting blade 151 to rise and fall to adjust the cutting depth of the cutting blade 151.The second cleaning component 17 further includes a scraping mechanism 173, which includes a second protective cover 1731 and a wiping component 1732 disposed on the second protective cover 1731. The second protective cover 1731 covers the cutter 151, and the wiping component 1732 is disposed close to the cutter 151. The wiping component 1732 is used to remove adhering substances from the cutter 151 during its rotation. The electrode slitting system 10 further includes a support member 16, which is disposed at the second cutting position and is used to support the electrode 20 to smooth the electrode tabs of the electrode 20. The auxiliary cutter device 15 is located upstream of the laser cutting device 13, and the conveying device includes an unwinding mechanism 11, a winding mechanism 18, and a tensioning mechanism 12. The unwinding mechanism 11 is located upstream of the auxiliary cutter 151 mechanism and is used to unwind the electrode sheet 20 roll. The winding mechanism 18 is located downstream of the laser cutting device 13 and includes a plurality of winding shafts 181 spaced apart. The plurality of winding shafts 181 are used to wind up the multiple segments formed after the electrode sheet 20 is cut. The tensioning mechanism 12 is located at the first cutting position and includes a plurality of pivotable guide rollers 121 spaced apart along the belt conveyor direction. The plurality of guide rollers 121 are configured to tension the cut surface of the electrode sheet 20 when they are lifted synchronously.

[0133] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0134] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0135] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pole piece slitting system characterized by, include: A conveying device is used to drive the electrode sheets to travel on the conveyor belt; A laser cutting device for slitting an electrode sheet in an unmarked area as it is moved to a first cutting position; A first cleaning component is used to clean the laser cutting device and the area of ​​the electrode located at the first cutting position; An auxiliary cutting device is used to cut the electrode as it travels from the marked area to the second cutting position. The second cleaning component is used to clean the auxiliary cutting device and the area of ​​the electrode located at the second cutting position.

2. The pole piece slitting system of claim 1, wherein, The first cleaning component includes: A first protective cover is installed over the first cutting position and has an opening for avoiding laser beams; A blower mechanism and a first dust suction mechanism are installed on the first protective cover. The air outlet of the blower mechanism is adapted to face the front of the electrode sheet, and the first dust suction mechanism is used to suck up dust from the front of the area of ​​the electrode sheet located at the first cutting position.

3. The electrode slitting system according to claim 2, characterized in that, The laser cutting device includes: A laser head, at least partially housed within the first protective shield, is used to emit a laser. The first moving module is used to adjust the height of the laser head; The second moving module is used to adjust the cutting position of the laser head on the electrode.

4. The pole piece slitting system of claim 3, wherein, The first cleaning component also includes: The second dust-collecting structure is installed inside the first protective cover and surrounds the laser head to collect dust from the laser head.

5. The pole piece slitting system of any of claims 1-4, wherein, The first cleaning component also includes: The third dust extraction structure is located below the first cutting position and is used to extract dust from the reverse side of the area of ​​the electrode located at the first cutting position.

6. The electrode slitting system according to any one of claims 1-4, characterized in that, The second cleaning component includes: The fourth dust-collecting structure is located above the second cutting position and is used to collect dust from the front of the area of ​​the electrode located at the second cutting position.

7. The electrode slitting system according to any one of claims 1-4, characterized in that, The second cleaning component also includes: The fifth dust extraction structure is located below the second cutting position and is used to extract dust from the reverse side of the area of ​​the electrode located at the second cutting position.

8. The pole piece slitting system of any of claims 1-4, wherein, The auxiliary cutting device includes: A cutting blade, used to cut the electrode sheet; A first driving mechanism is used to drive the cutter to translate so that the cutting line of the auxiliary cutter device is aligned with the cutting line of the laser cutting device; The second drive mechanism is used to drive the cutter to rise and fall to adjust the cutting depth of the cutter.

9. The electrode slitting system according to claim 8, characterized in that, The second cleaning component also includes: The scraping mechanism includes a second protective cover and a wiping component disposed on the second protective cover. The second protective cover covers the cutter, and the wiping component is disposed close to the cutter to remove the adhering material on the cutter during the rotation of the cutter.

10. The pole piece slitting system of any of claims 1-4, wherein, Also includes: A support member, located at the second cutting position, is used to support the electrode sheet to smooth out the tabs of the electrode sheet.

11. The pole piece slitting system of any of claims 1-4, wherein, The auxiliary cutting device is located upstream of the laser cutting device, and the conveying device includes: An unwinding mechanism, located upstream of the auxiliary cutter device, is used to unwind the electrode sheet roll. A winding mechanism, located downstream of the laser cutting device, includes multiple winding shafts spaced apart, which are used to wind up the multiple segments formed after the electrode sheet is cut. A tensioning mechanism, located at the first cutting position, includes a plurality of pivotable guide rollers spaced apart along the belt conveyor direction, the plurality of guide rollers being configured to tension the cut surface of the electrode sheet when they are lifted synchronously.

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