Pole piece tension adjusting and dust removing mechanism
By designing the electrode tension adjustment dust removal mechanism in the production of lithium batteries, the problem of difficulty in coexisting the electrode stability and cavity cleanliness is solved, and the dual effects of electrode tension adjustment and dust removal are achieved, which improves the cutting quality and the production efficiency of the equipment.
Patent Information
- Application Number
- CN202420207686.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-01-26
AI Technical Summary
During the production process of lithium batteries, the stability of the electrode sheet and the cleanliness of the cavity are difficult to coexist. When the negative pressure environment is used for dust removal, it will affect the stability of the electrode sheet, resulting in jitter and degradation of the cutting quality.
A polar sheet tension adjustment and dust removal mechanism is designed, and by setting in-setting rollers, in-acting rollers, output rollers and out-setting rollers, the tension of the polar sheet is increased, and combined with fixed and movable dust removal components, dust removal and tension adjustment are achieved.
Effectively adjust the tension of the electrode sheet, improve the stability and quality of laser cutting, reduce cutting problems such as joint and continuous cutting of the ear, etc., while ensuring the cleanliness of the cutting cavity and preventing wear caused by dust sticking on the roller.
Smart Images
Figure CN222608371U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of lithium battery production, in particular to a pole piece tension regulating dust removal mechanism. Background Art
[0002] The two most important factors in ensuring the quality of laser cutting of pole lugs are: the stability of the pole piece and the cleanliness of the cavity. The stability of the pole piece is mainly provided by the tension of the pole piece itself. The pole piece tension can provide the most basic guarantee for the cutting of the pole lug. The greater the pole piece tension, the smaller the pole piece jitters during movement, but the tension that the pole piece can withstand is limited by the pole piece material itself. The higher the cleanliness of the cavity, the better the line of sight of the laser light path, and the laser is not blocked. The cleanliness of the cavity is guaranteed by providing a negative pressure environment in the cavity to extract the dust in the dust removal pipeline, because the closer the distance between the negative pressure environment and the dust generation point, the better the dust removal effect, and the higher the cleanliness level of the cavity, so that there is no need to stop the equipment for manual cleaning after a long period of operation, which improves the production efficiency and debugging cost of the equipment.
[0003] However, it is actually difficult for the stability of the pole piece and the cleanliness of the cavity to coexist. The conditions for ensuring the cleanliness of the cavity have been described above. The closer the negative pressure environment is to the dust generation point, the better the dust removal effect. But the problem caused by this is that the negative pressure environment will affect the stability of the pole piece. When there is a flow field around the pole piece and the flow field is unstable, the pole piece will have a negative pressure difference due to the flow velocity difference between the flow fields on both sides, causing the pole piece to shake. Therefore, the closer the negative pressure environment is to the dust generation point, the more obvious the pole piece jitter problem is, which in turn affects the quality of the pole ear cutting. The pole piece tension in the laser cutting area is mainly provided by the pole piece inlet roller and the pole piece outlet roller. However, due to the large spacing between the two rollers, the pole piece has a problem of tension loss between the two rollers, which will cause the pole piece to shake; at the same time, because the thickness of the pole piece material area and the foil area is relatively different at the microscopic level, there is also a large difference between the tension of the foil area and the tension of the material area. Utility Model Content
[0004] The main purpose of the utility model is to provide a dust removal mechanism for adjusting the tension of the pole piece to solve the above technical problems and to be able to adjust the tension of the pole piece during cutting.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A dust removal mechanism for adjusting the tension of a pole piece is installed between a pole piece entry roller and a pole piece exit roller, and comprises a fixed dust removal component and a movable dust removal component, wherein the fixed dust removal component comprises a fixed dust removal bracket, an entry roller, an exit roller, an entry dust suction structure and an exit dust suction structure, wherein the entry roller is installed at the upper end of the fixed dust removal bracket, and the exit roller is installed at the lower end of the fixed dust removal bracket, the entry dust suction structure is aligned with the entry roller, and the exit roller is aligned with the exit dust suction structure, and the movable dust removal component comprises a movable dust removal bracket, an entry roller, an exit roller and an exit dust suction structure, wherein the entry roller is installed at the upper end of the movable dust removal bracket, and the exit roller is installed at the lower end of the movable dust removal bracket, and the exit dust suction structure is aligned with the exit roller, and the pole piece passes through the entry roller, the exit roller, the entry roller and the exit roller in sequence.
[0007] As a preferred technical solution, the fixed dust removal component includes a front cutting cavity air blowing block, which is installed between the fixed dust suction structure and the fixed dust suction structure; the movable dust removal component includes a rear cutting cavity air blowing block, which is installed between the input roller and the output dust suction structure; the front cutting cavity air blowing block is aligned with the rear cutting cavity air blowing block.
[0008] As a preferred technical solution, the fixed dust suction structure includes a fixed scraper, a fixed dust removal chamber and a fixed dust removal pipe. The fixed roller is installed at the air inlet of the fixed dust removal chamber, the fixed scraper abuts against the fixed roller, and the fixed dust removal pipe is connected to the fixed dust removal chamber.
[0009] As a preferred technical solution, the dust suction structure includes a scraper, a dust removal cavity and a dust removal pipe. The roller is installed at the air inlet of the dust removal cavity. The scraper abuts against the roller, and the dust removal pipe is connected to the dust removal cavity.
[0010] As a preferred technical solution, the movable dust suction structure includes a movable scraper, a movable dust removal chamber and a movable dust removal pipe. The movable roller is installed at the air inlet of the movable dust removal chamber. The movable scraper abuts against the movable roller, and the movable dust removal pipe is connected to the movable dust removal chamber.
[0011] As a preferred technical solution, it further includes a lower waste assembly, which is installed at the lower end of the fixed dust removal assembly.
[0012] As a preferred technical solution, the lower waste assembly includes a belt, a driven roller and a driving wheel, the driving wheel is connected to the motor, and the belt connects the driven wheel and the driving wheel.
[0013] As a preferred technical solution, the lower waste assembly further includes a fixed cavity blowing block, and the fixed cavity blowing block is arranged close to the fixed cavity blowing block.
[0014] As a preferred technical solution, the movable dust removal assembly also includes an outgoing cavity air blowing block, which is installed below the outgoing dust suction structure and aligned with the fixed cavity air blowing block.
[0015] The beneficial effects of the utility model are as follows: the above-mentioned pole piece tension adjustment and dust removal mechanism, by arranging a fixed roller, a movable roller, an exiting roller and a fixed roller, increases the wrap angle of the pole piece entering the cutting area and exiting the cutting area, increases the pole piece tension, and enables the pole piece to maintain stability during laser cutting of the pole ear, thereby improving high-quality cutting, reducing cutting problems such as joint cutting, continuous pole ear cutting, large hot melt zone, and excessive molten beads. Since the pole piece tensioning roller is located near the cutting point, more dust is generated here. By arranging a dust removal structure, the roller is scraped to remove dust, ensuring that the cleanliness requirements in the cutting chamber are met and preventing the roller from sticking to dust and causing wear on the pole piece. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a cross-sectional view of the dust removal mechanism for adjusting the tension of the pole piece involved in the utility model;
[0017] Figure 2 It is a three-dimensional cross-sectional view of the pole piece tension adjustment dust removal mechanism involved in the utility model. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0019] Please combine Figure 1 and Figure 2 As shown, a pole piece tension adjustment dust removal mechanism is installed between the pole piece entry roller b and the pole piece exit roller c, and the pole piece a is transmitted between the pole piece entry roller b and the pole piece exit roller c, including a fixed dust removal component 1, a movable dust removal component 2 and a lower waste component 3. The fixed dust removal component 1 is aligned with the movable dust removal component 2 and is used to absorb dust formed by cutting the pole piece ear. The lower waste component 3 is installed at the lower end of the fixed dust removal component 1 and is used to separate the pole piece from the waste, and the movable dust removal component 2 can move relative to the fixed dust removal component 1 to adjust the tension of the pole piece.
[0020] Specifically, the fixed dust removal assembly 1 includes a fixed dust removal bracket 11, an entry roller 12, an exit roller 13, an entry dust suction structure 14, an exit dust suction structure 15 and a front cutting chamber air blowing block 16. The entry roller 12 is installed at the upper end of the fixed dust removal bracket 11, and the exit roller 13 is installed at the lower end of the fixed dust removal bracket 11. The entry dust suction structure 14 is aligned with the entry roller 12 for absorbing dust contaminated by the entry roller 12. The exit roller 13 is aligned with the exit dust suction structure 15 for absorbing dust contaminated by the exit roller 13. The front cutting chamber air blowing block 16 is installed between the entry dust suction structure 14 and the exit dust suction structure 15 for blowing out dust formed by laser cutting.
[0021] Specifically, the fixed dust suction structure 14 includes a fixed scraper 142, a fixed dust removal chamber 141 and a fixed dust removal pipe 143. The fixed roller 12 is installed at the air inlet of the fixed dust removal chamber 141. The fixed scraper 142 abuts against the fixed roller 12 to scrape off the dust adhering to the fixed roller 12. The fixed dust removal pipe 143 is connected to the fixed dust removal chamber 141. The fixed dust removal pipe 143 is connected to the fixed dust removal chamber 141 and is connected to negative air pressure to absorb the scraped dust.
[0022] Specifically, the dust suction structure 15 includes a fixed scraper 152, a fixed dust removal chamber 151 and a fixed dust removal pipe 153. The fixed roller 13 is installed at the air inlet of the fixed dust removal chamber 151. The fixed scraper 152 abuts against the fixed roller 12 to scrape off the dust adhering to the fixed roller 13. The fixed dust removal pipe 153 is connected to the fixed dust removal chamber 151. The fixed dust removal pipe 153 is connected to the fixed dust removal chamber 151. The negative air pressure is connected to the fixed dust removal pipe 153 to absorb the scraped dust.
[0023] Specifically, the movable dust removal assembly 2 includes a movable dust removal bracket 21, an input roller 22, an output roller 23, an output dust suction structure 24, a rear cutting cavity air blowing block 25 and an output cavity air blowing block 26. The input roller 22 is installed at the upper end of the movable dust removal bracket 21, the output roller 23 is installed at the lower end of the movable dust removal bracket 21, the output dust suction structure 24 is aligned with the output roller 23, the rear cutting cavity air blowing block 25 is installed between the input roller 22 and the output dust suction structure 24, the front cutting cavity air blowing block 25 is aligned with the rear cutting cavity air blowing block 16, the output cavity air blowing block 26 is installed below the output dust suction structure 24, and the rear cutting cavity air blowing block 25 and the output cavity air blowing block 26 are used to blow out the dust formed by laser cutting.
[0024] Specifically, the movable dust suction structure 24 includes a movable scraper 242, a movable dust removal cavity 241 and a movable dust removal duct 243. The movable roller 23 is installed at the air inlet of the movable dust removal cavity 241. The movable scraper 242 abuts against the movable roller 12 to scrape off the dust adhering to the movable roller 23. The movable dust removal duct 243 is connected to the movable dust removal cavity 241. The movable dust removal duct 243 is connected to the movable dust removal cavity 241. The negative air pressure is connected to the movable dust removal duct 243 to absorb the scraped dust.
[0025] Specifically, the lower waste assembly 3 includes a belt 32, a driven roller 33, a driving wheel 31 and a fixed cavity blowing block 34. The driving wheel 31 is connected to the motor, and the belt 32 connects the driven wheel 33 and the driving wheel 31. The fixed cavity blowing block 34 is arranged close to the fixed roller 13. The fixed cavity blowing block 34 is aligned with the driving cavity blowing block 26, and is used to blow out the dust formed by laser cutting.
[0026] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.
Claims
1. A dust removal mechanism for adjusting the tension of a pole piece, installed between a pole piece inlet roller and a pole piece outlet roller, characterized in that: The invention comprises a fixed dust removal component and a movable dust removal component, wherein the fixed dust removal component comprises a fixed dust removal bracket, an entry roller, an exit roller, an entry dust suction structure and an exit dust suction structure, wherein the entry roller is installed at the upper end of the fixed dust removal bracket, and the exit roller is installed at the lower end of the fixed dust removal bracket, the entry dust suction structure is aligned with the entry roller, and the exit roller is aligned with the exit dust suction structure, and the movable dust removal component comprises a movable dust removal bracket, an entry roller, an exit roller and an exit dust suction structure, wherein the entry roller is installed at the upper end of the movable dust removal bracket, and the exit roller is installed at the lower end of the movable dust removal bracket, and the exit dust suction structure is aligned with the exit roller, and the pole piece passes through the entry roller, the exit roller, the entry roller and the exit roller in sequence.
2. The pole piece tension adjustment and dust removal mechanism according to claim 1, characterized in that: The fixed dust removal component includes a front cutting cavity air blowing block, which is installed between the fixed dust suction structure and the fixed dust suction structure; the movable dust removal component includes a rear cutting cavity air blowing block, which is installed between the input roller and the output dust suction structure; the front cutting cavity air blowing block is aligned with the rear cutting cavity air blowing block.
3. The pole piece tension adjustment and dust removal mechanism according to claim 2, characterized in that: The fixed dust suction structure includes a fixed scraper, a fixed dust removal cavity and a fixed dust removal pipe. The fixed roller is installed at the air inlet of the fixed dust removal cavity. The fixed scraper abuts against the fixed roller. The fixed dust removal pipe is connected to the fixed dust removal cavity.
4. The pole piece tension adjustment and dust removal mechanism according to claim 3, characterized in that: The fixed dust suction structure includes a fixed scraper, a fixed dust removal cavity and a fixed dust removal pipe. The fixed roller is installed at the air inlet of the fixed dust removal cavity. The fixed scraper abuts against the fixed roller. The fixed dust removal pipe is connected to the fixed dust removal cavity.
5. The pole piece tension adjustment and dust removal mechanism according to claim 4, characterized in that: The movable dust suction structure includes a movable scraper, a movable dust removal cavity and a movable dust removal duct. The movable roller is installed at the air inlet of the movable dust removal cavity. The movable scraper abuts against the movable roller. The movable dust removal duct is connected to the movable dust removal cavity.
6. The pole piece tension adjustment and dust removal mechanism according to claim 3, 4 or 5, characterized in that: It further comprises a lower waste assembly, which is installed at the lower end of the fixed dust removal assembly.
7. The pole piece tension adjustment and dust removal mechanism according to claim 6, characterized in that: The lower waste assembly comprises a belt, a driven wheel and a driving wheel, the driving wheel is connected to the motor, and the belt connects the driven wheel and the driving wheel.
8. The pole piece tension adjustment and dust removal mechanism according to claim 7, characterized in that: The lower waste material assembly also includes a fixed cavity blowing block, and the fixed cavity blowing block is arranged close to the fixed roller.
9. The pole piece tension adjustment and dust removal mechanism according to claim 8, characterized in that: The movable dust removal assembly also includes an outgoing cavity air blowing block, which is installed below the outgoing dust suction structure and is aligned with the fixed cavity air blowing block.