Tab folding device with dust removal function

Abstract

The application relates to the technical field of battery manufacturing, and discloses a tab bending device with a dust removal function, which comprises a passing roller assembly, a bending assembly and a dust removal assembly. The passing roller assembly comprises a roller seat, a first passing roller and a second passing roller, the roller seat is arranged on the two sides of the first passing roller and the second passing roller, the first passing roller is movably arranged at the lower end of the roller seat, and the second passing roller is movably arranged at the upper end of the roller seat; the bending assembly comprises at least one bending mechanism, the bending mechanism is connected with the roller seat and arranged at the side end of the first passing roller and / or the second passing roller; and the dust removal assembly comprises at least one dust removal mechanism, the dust removal mechanism is arranged in correspondence with the bending mechanism and connected with the roller seat. The dust removal assembly is arranged in cooperation with the bending assembly, so that the dust at the bending position of the tab can be removed by the dust removal mechanism during the bending process, the dust embedded between the tab and the diaphragm is reduced, the uneven internal stress phenomenon in the bending process is avoided, the qualified rate of the tab bending is improved, and the battery production yield is greatly ensured.

Description

Technical Field

[0001] This application belongs to the field of battery manufacturing technology, specifically relating to a tab bending device with dust removal function. Background Technology

[0002] As a core energy storage component, the battery's internal structure mainly consists of a positive electrode, a negative electrode, and a separator. These three components are assembled into the battery core through winding or stacking processes, directly affecting the battery's energy density, cycle life, and safety performance. During electrode processing, the tabs, as a key structure for extracting current from the battery's internal structure, require high-precision cutting. Laser die-cutting, due to its advantages such as high cutting efficiency, smooth cuts, high dimensional accuracy, and minimal damage to the electrode substrate, has become the mainstream tab forming process. However, during laser die-cutting, the active material layer and current collector of the electrode melt and vaporize under the high temperature of the laser, generating a large amount of micron- or even nano-sized debris and dust. This type of dust mainly includes active material particles, metal oxide particles, and a small amount of carbide particles. It is characterized by its small particle size and strong adsorption, easily adhering to the electrode surface, tab cuts, and edge areas. If this dust debris is not effectively removed, it may become embedded between the electrode and the separator, leading to a decrease in the interlayer adhesion of the wound core. During tab bending, this can easily cause uneven internal stress, and over long-term cycling, it can easily damage the separator, significantly reducing the tab bending yield and making it difficult to guarantee battery production yield. Utility Model Content

[0003] To address the shortcomings of the prior art, this application provides a tab bending device with a dust removal function. Through the coordinated design of the dust removal component and the bending component, a dust removal mechanism is used at the tab bending point to effectively remove debris and dust, greatly reducing dust embedding between the electrode sheet and the separator, effectively improving the interlayer adhesion of the wound core, and effectively avoiding uneven internal stress during the tab bending process, ensuring the quality of the separator, thereby improving the pass rate of tab bending and ensuring the production yield of the battery.

[0004] The technical effects to be achieved in this application are realized through the following aspects: This application provides a tab bending device with dust removal function, comprising: The roller assembly includes a roller seat, a first roller and a second roller. The roller seat is disposed on both sides of the first roller and the second roller. The first roller is movably disposed at the lower end of the roller seat, and the second roller is movably disposed at the upper end of the roller seat. A bending assembly includes at least one bending mechanism connected to the roller seat and disposed at the side end of the first guide roller and / or the second guide roller; and The dust removal assembly includes at least one dust removal mechanism, which is provided corresponding to the bending mechanism and connected to the roller seat, for removing dust from the bent part of the electrode tab.

[0005] In some implementations, the dust removal mechanism includes an air blowing component, a dust collection shell, and a dust suction component. The air blowing component is located on one side of the bending assembly, the dust collection shell surrounds the other side of the bending assembly and is opposite to the air blowing component, and the dust suction component is connected to the dust collection shell.

[0006] In some implementations, the blowing component includes a nozzle and an air source body. The nozzle is provided with a communicating air jet port and an air inlet. The air jet port is opposite to the dust collection shell, and the air inlet is connected to the air source body.

[0007] In some implementations, the dust collection shell includes a baffle and a plurality of surrounding plates, the baffle being opposite to the air blowing component, the surrounding plates being connected to the edge of the baffle, and a dust collection chamber being formed between the baffle and the plurality of surrounding plates.

[0008] In some implementations, the vacuuming component includes a vacuum pipe and a vacuum power source. The vacuum pipe is connected to the baffle and communicates with the dust collection chamber. The vacuum power source is connected to the vacuum pipe.

[0009] In some implementations, the bending mechanism includes a mounting plate, a slide cylinder, and a bending component. The mounting plate is connected to the roller seat, the mounting end of the slide cylinder is connected to the mounting plate, and the driving end of the slide cylinder is connected to the bending component.

[0010] In some implementations, the bending component includes a base and a bending roller, the bending roller being movably connected to the base.

[0011] In some implementations, the roller assembly further includes a stop block connected to the roller seat and configured corresponding to the first roller and the second roller.

[0012] In some implementations, a slide module is also included, which is movably connected to the roller seat.

[0013] In some implementations, the slide module includes a drive component, a slider, a guide rail, and a fixed base. The slider is connected to the drive end of the drive component and to the roller base. The guide rail and the slider are movably connected. The fixed base is connected to the fixed end of the drive component.

[0014] In summary, this application has at least the following advantages: The electrode tab bending device with dust removal function provided in this application, by using a dust removal component in conjunction with a bending component, allows the dust at the bending point to be removed by the dust removal mechanism during the bending process, thereby reducing dust embedding between the electrode sheet and the separator, avoiding uneven internal stress during the bending process, effectively ensuring the quality of the positive electrode sheet, negative electrode sheet and separator during the manufacturing process, improving the pass rate of electrode tab bending, and greatly ensuring the yield of battery production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the tab bending device in Embodiment 1 of this application.

[0016] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0017] Figure 3 This is a side view of the tab bending device in Embodiment 2 of this application.

[0018] Figure 4 This is a top view of the bending mechanism in Embodiment 2 of this application.

[0019] Figure 5 This is a top view of the tab bending device in Embodiment 3 of this application.

[0020] Marked in the image: 1. Roller assembly; 11. Roller seat; 12. First roller; 13. Second roller; 14. Stop block; 21. Bending mechanism; 211. Mounting plate; 212. Slide cylinder; 213. Bending component; 2131. Seat; 2132. Bending roller; 31. Dust removal mechanism; 311. Air blowing component; 3111. Nozzle; 312. Dust collection shell; 3121. Baffle; 3122. Enclosure; 3131. Suction pipe; 4. Slide module; 41. Drive component; 42. Guide rail; 43. Fixed seat. 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 The tab bending device with dust removal function of this application includes a roller assembly 1, a bending assembly, and a dust removal assembly. The roller assembly 1 includes a roller seat 11, a first roller 12, and a second roller 13. The roller seat 11 is disposed on both sides of the first roller 12 and the second roller 13. The first roller 12 is movably disposed at the lower end of the roller seat 11, and the second roller 13 is movably disposed at the upper end of the roller seat 11. The bending assembly includes at least one bending mechanism 21, which is connected to the roller seat 11 and disposed on the side end of the first roller 12 and / or the second roller 13. The dust removal assembly includes at least one dust removal mechanism 31, which is disposed corresponding to the bending mechanism 21 and connected to the roller seat 11, for dust removal at the tab bending point. Preferably, two bending mechanisms 21 can be set, specifically one bending mechanism 21 is set on the first roller 12 and the second roller 13 respectively, and a dust removal mechanism 31 is set at each bending mechanism 21, which can accurately align with the electrode tab bending point, and promptly remove dust and debris generated during the bending process to avoid dust adhesion affecting subsequent winding processes and battery product quality.

[0024] The tab bending device in this embodiment employs a design that combines a dust removal component with a bending component. Specifically, a dust removal mechanism 31 is installed at the tab bending point to clean the dust from the tab at the bending point, thereby reducing the presence of dust and preventing uneven internal stress caused by dust embedding during the tab bending process. This effectively ensures the quality of the positive electrode, negative electrode, and separator during the manufacturing process, improves the pass rate of tab bending, and greatly guarantees the battery production yield.

[0025] In this structure, two bending mechanisms 21 are respectively set to the first and second guide rollers 13, which can flexibly realize single-sided or double-sided bending of the electrode tabs, adapting to the bending requirements of different product specifications and improving processing adaptability and bending accuracy. All components of this structure are connected to the roller seat 11, and the overall structure is compact, ultimately achieving efficient processing of electrode tab bending and dust removal in one integrated manner, which not only ensures the bending and forming quality, but also improves processing consistency and production efficiency.

[0026] In some embodiments, the dust removal mechanism 31 includes an air blowing component 311, a dust collection shell 312, and a dust suction component. The air blowing component 311 is located on one side of the bending assembly, and the dust collection shell 312 is located on the other side of the bending assembly and opposite to the air blowing component 311. The dust suction component is connected to the dust collection shell 312. Through the corresponding cooperation and functional synergy of the air blowing component 311, the dust collection shell 312, and the dust suction component, efficient and precise removal of dust from the bent tab is achieved. The air blowing component 311 blows directionally at the bent tab on one side of the bending assembly, which can quickly remove dust and debris generated during the bending process. The dust collection shell 312 is located opposite on the other side of the bending assembly, which can enclose and form a partially enclosed space to prevent dust from drifting to the surrounding area and contaminating the electrode or equipment. At the same time, it guides the dust to concentrate inside the shell, and then the dust collection component, which is connected to the dust collection shell 312, generates negative pressure to promptly extract and collect the dust concentrated inside the shell.

[0027] This setup not only avoids interfering with the forming process of the bending components and ensures the bending accuracy of the tabs, but also effectively removes dust adhering to the bending area, significantly improving the thoroughness of dust removal, ensuring the cleanliness of the tab processing, and effectively preventing dust residue from affecting subsequent winding processes and battery safety performance.

[0028] In some embodiments, the dust extraction component includes a suction pipe 3131 and a dust extraction power source. The suction pipe 3131 is connected to a baffle 3121 and communicates with the dust collection chamber. The dust extraction power source is connected to the suction pipe 3131. The suction pipe 3131 can directly and quickly extract concentrated dust from the dust collection chamber, preventing dust from remaining in the chamber or flowing back and adhering to the surfaces of the tabs and electrodes, effectively ensuring dust removal efficiency and providing reliable protection for the cleanliness of battery processing. The dust extraction power source can adjust the negative pressure intensity according to the amount of dust generated, adapting to the dust removal needs of different tab bending scenarios.

[0029] In some embodiments, please refer to the appendix. Figure 2The blowing component 311 includes a nozzle 3111 and an air source. The nozzle 3111 has a communicating jet port and an air inlet. The jet port is opposite to the dust collection shell 312, and the air inlet is connected to the air source. The air source provides a stable airflow to the nozzle 3111. After receiving the airflow through the air inlet, the nozzle 3111 forms a concentrated and directional blowing airflow through the jet port. The jet port is positioned opposite to the dust collection shell 312, which can accurately target the dust generation area of ​​the electrode tab bend, avoiding the problem of inefficient dust removal caused by airflow dispersion. It allows the blowing airflow to act directly on the dust attachment point, enhancing the peeling force of fine dust. At the same time, it forms a precise alignment with the dust collection shell 312, so that the peeled dust can be quickly surrounded and guided by the dust collection shell 312 to the dust collection component, ensuring thorough dust removal. Moreover, the overall structure is simple and highly adaptable. It can adjust the airflow pressure through the air source to meet the dust removal needs of different tab specifications, and the directional design of the nozzle 3111 can prevent airflow from interfering with the bending and forming of the tab. While improving the accuracy and thoroughness of dust removal, it further ensures the forming quality and consistency of the tab processing.

[0030] In some embodiments, the dust collection housing 312 includes a baffle 3121 and multiple surrounding plates 3122. The baffle 3121 is opposite to the air blowing component 311, and the surrounding plates 3122 are connected to the edges of the baffle 3121. A dust collection chamber is formed between the baffle 3121 and the multiple surrounding plates 3122. Through this arrangement, the baffle 3121 can directly block the dust carried by the blowing airflow from diffusing outwards. The multiple surrounding plates 3122, connected to the edges of the baffle 3121, form a well-sealed dust collection chamber, which can enclose the bent part of the electrode tab within the chamber, preventing dust from drifting to the electrode surface or other areas of the equipment and causing secondary pollution. The enclosed structure of the dust collection chamber provides reverse blocking support for the directional blowing of the air blowing component 311, enhancing the stripping and guiding effect of the airflow on the dust. It also allows the dust to concentrate and gather within the chamber, creating favorable conditions for the efficient dust removal by the suction component, ensuring that the dust quickly leaves the bent area, and effectively improving the concentration and thoroughness of dust removal.

[0031] Example 2: The difference between this embodiment and Embodiment 1 is that, please refer to... Figure 3 The bending mechanism 21 in this embodiment includes a mounting plate 211, a slide cylinder 212, and a bending component 213. The mounting plate 211 is connected to the roller seat 11, the mounting end of the slide cylinder 212 is connected to the mounting plate 211, and the driving end of the slide cylinder 212 is connected to the bending component 213.

[0032] The bending mechanism 21 in this embodiment can flexibly adapt to the bending angle and bending depth requirements of different specifications of electrode tabs by adjusting the stroke and driving force of the slide cylinder 212. It has strong adaptability and is easy to adjust. At the same time, the modular design makes installation and maintenance more efficient. While ensuring the bending and forming accuracy and consistency of the electrode tabs, it does not interfere with the electrode sheet conveying of the roller assembly 1 and the dust removal operation of the dust removal assembly, further improving the overall processing efficiency and adaptability of the device.

[0033] In addition, the mounting plate 211 in this structure securely connects to the roller seat 11, providing reliable support for the entire bending mechanism 21, thereby effectively ensuring the structural stability during operation and guaranteeing the bending quality.

[0034] In other embodiments, a piston rod is provided between the drive end of the slide cylinder 212 and the bending component 213. This arrangement allows the driving force of the slide cylinder 212 to be transmitted linearly and without deviation to the bending component 213, avoiding uneven load or displacement deviation during power transmission. Simultaneously, the piston rod can extend the power output stroke, flexibly adapting to the installation distance between the bending component 213 and the slide cylinder 212, improving the flexibility of the mechanism layout, ensuring the controllability of the bending operation, and guaranteeing overall processing quality.

[0035] In some embodiments, the roller guide assembly 1 further includes a stop block 14, which is connected to the roller seat 11 and is configured corresponding to the first roller guide 12 and the second roller guide 13. This configuration allows the stop block 14 to precisely limit the positions of the first roller guide 12 and the second roller guide 13, effectively preventing any movement of the two rollers during electrode conveying and tab bending operations. This ensures that the rollers maintain a stable installation posture and transmission trajectory, guaranteeing a smooth conveying effect on the electrode sheets. Furthermore, the stop block 14 reduces wear on the roller seat 11 connection structure caused by roller movement, extending the service life of the roller guide assembly 1.

[0036] In some embodiments, see Figure 4 The bending component 213 includes a base 2131 and a bending roller 2132, with the bending roller 2132 movably connected to the base 2131. This configuration allows the bending roller 2132 to roll synchronously with the electrode tab during transport when in contact with it, transforming hard contact into rolling friction. This reduces scratches and indentations on the electrode tab surface and ensures uniform bending angle and cut smoothness through even rolling pressure applied to the bending area. This structure is suitable for processing scenarios involving continuous electrode sheet transport without affecting the smoothness of the sheet transport. Furthermore, the movable design of the bending roller 2132 accommodates bending requirements for different electrode tab specifications, further improving bending quality and processing stability. It also works synergistically with the power output of the bending mechanism 21 and the clean operation of the dust removal components to ensure overall processing efficiency.

[0037] Example 3: The difference between this embodiment and Embodiment 1 is that, please refer to... Figure 5 The tab bending device in this embodiment also includes a slide module 4, which is movably connected to the roller seat 11.

[0038] In this embodiment, the electrode tab bending device uses a slide module 4 to drive the roller seat 11 and the roller passing assembly 1, bending assembly, and dust removal assembly integrated within the roller seat 11 to adjust their positions. This allows for precise adaptation to the width and positional distribution requirements of electrode sheets of different specifications, significantly improving the processing adaptability of the device. Furthermore, the adjustment process does not require disassembly or alteration of the relative positions of the components, ensuring the coordinated accuracy of bending and dust removal. The overall structural design enables convenient and efficient adjustment operations, effectively reducing changeover time and improving production efficiency. In addition, the stable driving and positioning performance of the slide module 4 ensures that the roller seat 11 and all components remain stable after adjustment, preventing positional shifts during operation from affecting the electrode tab bending accuracy and dust removal effect, thus ensuring the consistency and stability of processing products of different specifications.

[0039] In some embodiments, the slide module 4 includes a drive member 41, a slider, a guide rail 42, and a fixed base 43. The slider is connected to the drive end of the drive member 41 and to the roller seat 11; the guide rail 42 and the slider are movably connected; and the fixed base 43 is connected to the fixed end of the drive member 41.

[0040] With the above configuration, the drive unit 41 drives the connected slider to move smoothly in a straight line along the guide rail 42. The slider is directly connected to the roller seat 11, which can synchronously drive the overall displacement of the roller seat 11 and the integrated roller passing assembly 1, bending assembly, and dust removal assembly, achieving precise adjustment of the relative position with the electrode sheet. In this structure, the movement of the guide rail 42 and the slider not only restricts the displacement trajectory, avoiding swaying and erratic movement during adjustment, but also reduces motion friction, effectively improving the smoothness of adjustment. Furthermore, the position control capability of the slide module 4 can adapt to the processing requirements of electrode sheets of different specifications, effectively simplifying the changeover operation, improving production efficiency, and enhancing the processing adaptability and stability of the overall device.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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 tab bending device with dust removal function, characterized in that, include: The roller assembly (1) includes a roller seat (11), a first roller (12) and a second roller (13). The roller seat (11) is disposed on both sides of the first roller (12) and the second roller (13). The first roller (12) is movably disposed at the lower end of the roller seat (11), and the second roller (13) is movably disposed at the upper end of the roller seat (11). A bending assembly includes at least one bending mechanism (21) connected to the roller seat (11) and disposed at the side end of the first guide roller (12) and / or the second guide roller (13); and The dust removal assembly includes at least one dust removal mechanism (31), which is provided corresponding to the bending mechanism (21) and connected to the roller seat (11) for dust removal at the bending point of the electrode tab.

2. The electrode tab bending device with dust removal function according to claim 1, characterized in that, The dust removal mechanism (31) includes an air blowing component (311), a dust collection shell (312), and a dust suction component. The air blowing component (311) is located on one side of the bending assembly, and the dust collection shell (312) is located on the other side of the bending assembly and is opposite to the air blowing component (311). The dust suction component is connected to the dust collection shell (312).

3. The electrode tab bending device with dust removal function according to claim 2, characterized in that, The blowing component (311) includes a nozzle (3111) and an air source body. The nozzle (3111) is provided with a communicating air jet port and an air inlet. The air jet port is opposite to the dust collection shell (312), and the air inlet is connected to the air source body.

4. The electrode tab bending device with dust removal function according to claim 2, characterized in that, The dust collection shell (312) includes a baffle (3121) and a plurality of surrounding plates (3122). The baffle (3121) is opposite to the air blowing component (311), and the surrounding plates (3122) are connected to the edge of the baffle (3121). A dust collection chamber is formed between the baffle (3121) and the plurality of surrounding plates (3122).

5. The electrode tab bending device with dust removal function according to claim 4, characterized in that, The dust collection component includes a dust collection pipe (3131) and a dust collection power source. The dust collection pipe (3131) is connected to the baffle (3121) and communicates with the dust collection chamber. The dust collection power source is connected to the dust collection pipe (3131).

6. The electrode tab bending device with dust removal function according to claim 1, characterized in that, The bending mechanism (21) includes a mounting plate (211), a slide cylinder (212), and a bending component (213). The mounting plate (211) is connected to the roller seat (11), the mounting end of the slide cylinder (212) is connected to the mounting plate (211), and the driving end of the slide cylinder (212) is connected to the bending component (213).

7. The electrode tab bending device with dust removal function according to claim 6, characterized in that, The bending component (213) includes a base (2131) and a bending roller (2132), the bending roller (2132) being movably connected to the base (2131).

8. The electrode tab bending device with dust removal function according to claim 1, characterized in that, The roller assembly (1) further includes a stop (14), which is connected to the roller seat (11) and is provided corresponding to the first roller (12) and the second roller (13).

9. The electrode tab bending device with dust removal function according to claim 1, characterized in that, It also includes a slide module (4), which is movably connected to the roller seat (11).

10. The electrode tab bending device with dust removal function according to claim 9, characterized in that, The slide module (4) includes a drive unit (41), a slider, a guide rail (42), and a fixed seat (43). The slider is connected to the drive end of the drive unit (41) and to the roller seat (11). The guide rail (42) and the slider are movably connected. The fixed seat (43) is connected to the fixed end of the drive unit (41).

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