A laser cutting equipment for forming lithium battery tabs

Abstract

This utility model discloses a laser cutting device for forming electrode tabs in lithium batteries, relating to the technical field of lithium-ion battery manufacturing equipment. It includes: a feed inlet at the top of a sealed housing body, with an adjustable feed taper roller at the inlet for tensioning or relaxing the electrode sheet; a first through-hole on the sealed housing body, through which a first negative pressure pipe extends into the sealed housing body; a cutting adsorption plate with multiple adsorption holes, positioned at the air inlet of the first negative pressure pipe, whereby the cutting adsorption plate adsorbs non-cutting areas of the electrode sheet when the electrode sheet enters the sealed housing body via the adjustable feed taper roller; a laser cutting assembly for cutting the electrode sheet within the sealed housing body to form electrode tabs; and a discharge port at the bottom of the sealed housing body, with a suspended cutting pressure roller for conveying the cut electrode sheet from the discharge port. The design aims to reduce electrode sheet vibration during laser cutting to avoid defocusing between the laser and the electrode sheet.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium-ion battery manufacturing equipment, and in particular to a laser cutting equipment for forming lithium battery tabs. Background Technology

[0002] With the rapid development of the new energy industry, lithium-ion batteries, as important energy storage devices, require continuous optimization and improvement in their manufacturing processes to enhance battery performance, reduce production costs, and ensure battery safety. In the manufacturing process of lithium-ion batteries, electrode cutting is a critical step, especially during tab formation, where the cutting quality directly affects battery assembly and performance. To improve production efficiency, modern lithium-ion battery production widely employs laser cutting technology for tab cutting.

[0003] Laser cutting technology, as a precise processing method, can efficiently and accurately cut metal foils, and has advantages such as non-contact processing, smooth cut edges, and a small heat-affected zone. Especially in the electrode tab part of the electrode sheet, laser cutting can effectively avoid the defects that may be caused by traditional mechanical cutting, thus improving the quality of the electrode tab. However, some technical challenges still exist in the laser cutting process, one of the most prominent being the "waste strip linkage phenomenon," which occurs when the waste strip is not completely cut during the cutting process, resulting in incomplete or incomplete cutting between the waste strip and the electrode tab, leading to incomplete or uneven cutting.

[0004] The root cause of this problem lies in the unstable focusing of the laser beam during laser cutting. When the electrode undulates or vibrates during the cutting process, the focused position of the laser beam changes, causing fluctuations in the energy density of the laser cutting beam and resulting in defocusing. Defocusing directly affects the laser cutting effect, leading to irregular, incomplete, or uncut edges. This poor cutting not only results in waste tape residue but also affects subsequent production processes, especially in the winding process, where waste tape residue adheres to the outside of the electrode tabs and can easily be drawn into the battery cell.

[0005] Therefore, how to reduce the vibration of the electrode during the laser cutting process in order to avoid defocusing between the laser and the electrode has become a technical problem that urgently needs to be solved. Utility Model Content

[0006] The main purpose of this invention is to provide a laser cutting device for forming lithium battery tabs, which aims to reduce the vibration of the electrode sheet during the laser cutting process and avoid defocusing between the laser and the electrode sheet.

[0007] To achieve the above objectives, this utility model proposes a laser cutting device for forming lithium battery tabs, comprising:

[0008] The sealing box body has a feed inlet at the top and a feed taper adjustment roller at the feed inlet that can tension or relax the electrode sheet.

[0009] The first negative pressure pipe extends into the body of the sealing box through the first through hole and is a first negative pressure pipe.

[0010] A cutting adsorption plate is formed on the cutting adsorption plate, and the cutting adsorption plate is set at the air inlet of the first negative pressure pipe. When the electrode enters the sealed box body through the feed tapered adjustment roller, the cutting adsorption plate adsorbs the non-cut area on the electrode.

[0011] A laser cutting assembly is used to cut the electrode plates inside the sealed housing body to form electrode tabs on the electrode plates; and

[0012] A suspended cutting pressure roller is disposed inside the sealed box. The bottom of the sealed box is provided with a discharge port. The suspended cutting pressure roller is used to send the cut electrode sheet out from the discharge port.

[0013] In one embodiment of this application, the method further includes: defining the side of the electrode sheet closest to the cutting adsorption plate as the first surface of the electrode sheet; and defining the side opposite to the first surface as the second surface of the electrode sheet;

[0014] The sealed box body is equipped with a positive pressure slit-type long air knife, and the air outlet of the positive pressure slit-type long air knife faces the second side of the electrode.

[0015] In one embodiment of this application, the sealed box body is provided with a positive pressure slit short air knife, which is located on one side of the cutting adsorption plate and is used to continue cleaning the first surface of the electrode that has passed through the cutting adsorption plate. The air outlet direction of the positive pressure slit short air knife is the same as that of the positive pressure slit long air knife.

[0016] In one embodiment of this application, the first negative pressure pipe is provided with a long strip-shaped air supply port.

[0017] In one embodiment of this application, the sealed box body is further provided with a dust removal scraper, which abuts against the suspended cutting roller to remove dust from the suspended cutting roller.

[0018] In one embodiment of this application, a scraper dust collection box is also connected to the sealed box body. The scraper dust collection box is used to collect the dust peeled off by the dust removal scraper from the suspended cutting pressure roller.

[0019] In one embodiment of this application, a second through hole is provided on the side wall of the sealed box body. The second through hole is connected to a second negative pressure pipe, and the air inlet of the second negative pressure pipe faces the air outlet of the positive pressure slit-type long air knife.

[0020] In one embodiment of this application, a dust-collecting air knife is provided on one side of the dust removal scraper, and the dust-collecting air knife is used to blow the dust on the scraper into the second negative pressure pipe.

[0021] In one embodiment of this application, an L-shaped baffle is provided below the area between the laser cutting assembly and the electrode, and a dust removal air knife is provided on one side of the L-shaped baffle to blow dust on the L-shaped baffle into the second negative pressure pipe.

[0022] In one embodiment of this application, a vertically arranged waste stripping assembly is further provided at the discharge port, the waste stripping assembly comprising:

[0023] The first adsorption box is equipped with at least two guide rollers;

[0024] The second adsorption chamber is located below the first adsorption chamber;

[0025] First driving component; and

[0026] The adsorption belt is sleeved on the first adsorption box, the second adsorption box, and the first driving component. Under the restriction of the guide roller and the drive of the first driving component, it can rotate around the output shaft of the first adsorption box, the second adsorption box, and the first driving component. The waste belt can adhere to the adsorption belt under the adsorption of the first adsorption box and the second adsorption box to restrict the movement of the waste belt.

[0027] By adopting the above technical solution, this utility model can effectively improve the cutting accuracy of lithium battery tabs and avoid errors caused by electrode vibration or uneven tension during the cutting process. At the same time, through the coordinated work of the cutting adsorption plate and the suspended cutting pressure roller, the electrode remains stable during the cutting process, and electrode deformation or adverse effects are effectively avoided. Attached Figure Description

[0028] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present utility model;

[0030] Figure 2 This is a three-dimensional structural diagram of the internal structure of the sealing box body of this utility model;

[0031] Figure 3 A three-dimensional structural diagram of the waste tape stripping assembly;

[0032] 10. Sealed box body; 20. Second negative pressure pipe; 30. Waste strip peeling assembly; 31. First adsorption box; 32. Second adsorption box; 33. Adsorption belt; 34. First driving component; 311. Guide roller; 40. Laser cutting assembly; 51. Feed taper adjustment roller; 52. Cutting adsorption plate; 53. Positive pressure slit-type long air knife; 54. Positive pressure slit-type short air knife; 55. First negative pressure pipe; 56. Long strip-shaped air inlet; 57. Dust removal scraper; 58. Dust suction air knife; 61. L-shaped baffle; 62. Dust removal air knife; 70. Suspended cutting pressure roller. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0034] like Figures 1 to 3 As shown, in order to achieve the above objectives, this utility model proposes a laser cutting device for forming lithium battery tabs, comprising:

[0035] The sealing box body 10 has a feed inlet at the top and a feed taper adjustment roller 51 at the feed inlet for tensioning or loosening the electrode sheet.

[0036] The first negative pressure pipe 55 extends through the first through hole into the sealing box body 10.

[0037] Cutting adsorption plate 52, on which multiple adsorption through holes are formed, is located at the air inlet of the first negative pressure pipe 55. When the electrode enters the sealed box body 10 through the feed tapered adjustment roller 51, the cutting adsorption plate 52 adsorbs the non-cut area on the electrode.

[0038] Laser cutting assembly 40 is used to cut the electrode plates inside the sealed housing body 10 to form electrode tabs on the electrode plates; and

[0039] A suspended cutting roller 70 is disposed inside the sealed box. The bottom of the sealed box is provided with a discharge port. The suspended cutting roller 70 is used to send the cut electrode sheet out from the discharge port.

[0040] Specifically, the sealed housing 10 is the main body of this equipment. Its overall structure is a closed design, ensuring that dust and waste generated during the cutting process will not leak, effectively reducing environmental pollution. The top of the sealed housing 10 has a feed inlet for placing and feeding the electrode sheets. A feed taper adjusting roller 51 is installed near the feed inlet. This roller tensions or relaxes the electrode sheets to ensure appropriate tension when they enter the cutting area. Limiting screws are located on both sides of the feed taper adjusting roller 51 to adjust the angle of the guide roller 311 to accommodate different electrode sheet feeding requirements. When the electrode sheet tension is insufficient, the feed taper adjusting roller 51 can be adjusted appropriately to achieve suitable tension, thereby ensuring the accuracy of laser cutting.

[0041] A first through hole is provided on the sealed housing body 10 for installing a first negative pressure pipe 55. The first negative pressure pipe 55 extends into the sealed housing body 10 and is connected to the cutting adsorption plate 52. The cutting adsorption plate 52 has multiple adsorption through holes, and the arrangement of the adsorption through holes ensures that the electrode in the adsorption area can be effectively adsorbed during the laser cutting process. The cutting adsorption plate 52 is located at the air inlet of the first negative pressure pipe 55. The suction force generated by the negative pressure pipe can adsorb the non-cutting area on the electrode onto the cutting adsorption plate 52, thereby preventing the electrode from warping or shifting due to uneven force during the cutting process.

[0042] The laser cutting assembly 40 is used to cut the electrode sheet within the sealed housing body 10, precisely forming electrode tabs on the electrode sheet. The laser cutting assembly 40 consists of a laser generator, a focusing lens, and a laser cutting head. The laser cutting head can precisely focus the laser beam onto the electrode sheet according to the instructions of the control system to complete the cutting of the electrode tabs. During the laser cutting process, the cutting adsorption plate 52 effectively adsorbs the electrode sheet, ensuring the stability of the cutting area and avoiding cutting errors caused by the displacement of the electrode sheet.

[0043] The suspended cutting pressure roller 70 is disposed inside the sealed housing body 10, located on the path after the electrode sheet is cut. The function of the suspended cutting pressure roller 70 is to push the cut electrode sheet from inside the sealed housing body 10 to the discharge port, and to appropriately tension the electrode sheet during the discharge process to ensure that the electrode sheet does not fold or undergo other deformations after cutting. The discharge port is located at the bottom of the sealed housing body 10, through which the electrode sheet enters the next process. The structural design of the suspended cutting pressure roller 70 ensures the stability of the electrode sheet during the cutting process and, by precisely controlling its tension, prevents vibration or deviation during cutting, thereby ensuring cutting accuracy.

[0044] Working principle:

[0045] When the electrode sheet enters the sealed housing body 10 through the feed inlet, the feed tapered adjusting roller 51 tensions it to ensure uniform tension as the electrode sheet enters the laser cutting area. After passing the feed adjusting roller, the electrode sheet enters the interior of the sealed housing body 10, where the cutting suction plate 52 uses negative pressure to attract the non-cutting areas of the electrode sheet, keeping it stable during the cutting process. The laser cutting assembly 40 emits a laser beam, focusing it on the electrode sheet to precisely cut the tabs. After cutting, the suspended cutting pressure roller 70 pushes the cut electrode sheet to the discharge port. Dust and waste generated throughout the process are removed by the dust removal device in the sealed housing body 10, ensuring a clean internal environment and preventing any impact on cutting quality.

[0046] By adopting the above technical solution, this utility model can effectively improve the cutting accuracy of lithium battery tabs and avoid errors caused by electrode vibration or uneven tension during the cutting process. At the same time, through the coordinated work of the cutting adsorption plate 52 and the suspended cutting pressure roller 70, the electrode is ensured to remain stable during the cutting process, and electrode deformation or adverse effects are effectively avoided.

[0047] In one embodiment of this application, it further includes: defining the side of the electrode sheet closest to the cutting adsorption plate 52 as the first side of the electrode sheet; and defining the side opposite to the first side as the second side of the electrode sheet;

[0048] The sealed box body 10 is provided with a positive pressure slit-type long air knife 53, and the air outlet of the positive pressure slit-type long air knife 53 faces the second side of the electrode.

[0049] Specifically, in this device, the first side of the electrode is defined as the side closest to the cutting adsorption plate 52, while the opposite side is the second side of the electrode. During the cutting process, the first side of the electrode comes into contact with and is adsorbed by the cutting adsorption plate 52, ensuring that the electrode remains stable during laser cutting.

[0050] Within the sealed housing 10, particularly in the cutting area, a positive-pressure slit-type long air knife 53 is provided. The air knife's outlet faces the second surface of the electrode. The positive-pressure slit-type long air knife 53 is designed to provide a pressurized airflow during laser cutting, directed towards the second surface of the electrode. Its main function is to create a flat jet airflow field, using positive-pressure airflow to reduce the splashing of dust and molten beads that may be generated during cutting, while effectively cooling the laser cutting area to prevent excessively high temperatures from affecting the cutting quality of the electrode or causing unnecessary damage.

[0051] Working principle:

[0052] When the electrode enters the sealed housing 10, its first surface contacts the cutting suction plate 52. Negative pressure suction pulls the non-cutting area of ​​the electrode onto the cutting suction plate 52, ensuring the electrode remains stable during laser cutting. At this time, the laser cutting assembly 40 cuts the first surface of the electrode to form an electrode tab. Simultaneously, a positive pressure slit-type long air knife 53 blows airflow towards the second surface of the electrode through its outlet. The airflow generated by the air knife effectively cleans up waste material in the cutting area, reducing molten droplet splashing during laser cutting and preventing damage to the electrode or impact on cutting accuracy. At the same time, the positive pressure airflow helps cool the electrode, ensuring a suitable temperature during cutting and preventing overheating that could affect cutting quality.

[0053] By adopting the above technical solution, this utility model can not only further improve the accuracy of electrode cutting, but also effectively reduce the risk of molten beads splashing during the cutting process and reduce waste pollution through the design of positive pressure slit long air knife 53. At the same time, it can cool the cutting area and avoid cutting quality problems caused by overheating.

[0054] In one embodiment of this application, the sealed box body 10 is provided with a positive pressure slit short air knife 54. The positive pressure slit short air knife 54 is located on one side of the cutting adsorption plate 52 and is used to continue cleaning the first surface of the electrode that has passed through the cutting adsorption plate 52. The air outlet direction of the positive pressure slit short air knife 54 is the same as the air outlet direction of the positive pressure slit long air knife 53.

[0055] Specifically, within the sealed housing 10, a positive-pressure slit-type short air knife 54 is positioned on one side of the cutting adsorption plate 52. This air knife is used to further clean the first surface of the electrode sheet that has already passed through the cutting adsorption plate 52, ensuring that the electrode sheet surface remains clean during the cutting process and preventing dust, waste, or other foreign objects from interfering with the laser cutting process. The air outlet of the positive-pressure slit-type short air knife 54 faces the same direction as the air outlet of the positive-pressure slit-type long air knife 53.

[0056] Working principle:

[0057] After the electrode passes through the cutting and adsorption plate 52, the first surface of the electrode is adsorbed by the adsorption plate. As the electrode moves forward, the first surface of the electrode will move out of the adsorption range of the cutting and adsorption plate 52. At this time, the positive pressure slit short air knife 54 will further clean the first surface of the electrode that has passed through the cutting and adsorption plate 52 with airflow, blowing away the dust and residue on its surface.

[0058] By adopting the above technical solution, this utility model further cleans the surface of the electrode sheet by installing a positive pressure slit-type short air knife 54 on one side of the cutting adsorption plate 52, avoiding interference from residual waste or dust during the laser cutting process. At the same time, the positive pressure slit-type short air knife 54 and the long air knife work together to form a consistent airflow, maintain the stability of the cutting area, effectively reduce molten bead splashing and contamination during the laser cutting process, and improve cutting accuracy and product quality.

[0059] In one embodiment of this application, the first negative pressure pipe is provided with an elongated air supply port 56.

[0060] Specifically, a long strip-shaped air inlet 56 is designed on the first negative pressure duct 55. This air inlet is evenly distributed along the length of the negative pressure duct. Its main function is to improve the airflow distribution within the first negative pressure duct 55, ensuring that the negative pressure suction can act evenly on all areas of the electrode. The design of the air inlet helps optimize the airflow distribution within the negative pressure duct, improves the adsorption effect of the cutting adsorption plate 52, and makes the electrode more stable during the cutting process.

[0061] By adopting the above technical solution, this utility model can optimize the distribution of negative pressure airflow and improve the adsorption effect of the electrode by providing a long strip-shaped air supply port 56 on the first negative pressure pipe 55, making it more stable during the cutting process and avoiding cutting errors caused by uneven adsorption.

[0062] In one embodiment of this application, the sealed box body 10 is further provided with a dust removal scraper 57, which abuts against the suspended cutting roller 70 to remove dust from the suspended cutting roller 70.

[0063] Specifically, the dust removal scraper 57 is designed to directly contact the surface of the suspended cutting roller 70 to remove dust from its surface. During the cutting process, the suspended cutting roller 70 accumulates dust, which, if not removed promptly, can affect the stability of the electrode conveying process. The dust removal scraper 57 effectively removes dust adhering to the surface of the suspended cutting roller 70, preventing these particles from adversely affecting subsequent processes.

[0064] By adopting the above technical solution, this utility model, through the installation of a dust-removing scraper 57 inside the sealed box body 10, can promptly remove dust particles adhering to the surface of the suspended cutting pressure roller 70, keeping the pressure roller clean and ensuring that the electrode sheet remains stable and undeformed during subsequent conveying. This design not only improves the stability of the equipment but also effectively avoids equipment failures caused by dust accumulation, thereby improving the precision of the cutting process and the quality of the electrode sheet.

[0065] In one embodiment of this application, a scraper dust collection box is also connected to the sealed box body 10, which is used to collect the dust peeled off from the suspended cutting roller 70 by the dust removal scraper 57.

[0066] Specifically, a scraper dust collection box is connected to the sealed box body 10, which works in conjunction with the dust removal scraper 57. When the dust removal scraper 57 scrapes away the dust on the surface of the suspended cutting roller 70, the dust is collected and guided into the scraper dust collection box.

[0067] By adopting the above technical solution, this utility model effectively collects the dust peeled off from the surface of the suspended cutting roller 70 by the dust removal scraper 57 by connecting the scraper dust collection box to the sealed box body 10, thus avoiding the accumulation of dust in the equipment.

[0068] In one embodiment of this application, a second through hole is provided on the side wall of the sealed box body 10. The second through hole is connected to a second negative pressure pipe 20, and the air inlet of the second negative pressure pipe 20 faces the air outlet of the positive pressure slit-type long air knife 53.

[0069] Specifically, a second through hole is provided on the side wall of the sealed box body 10, which is used to connect the second negative pressure pipe 20. The air inlet of the second negative pressure pipe 20 faces the air outlet of the positive pressure slit-type long air knife 53. The second negative pressure pipe 20 is provided to further optimize the airflow and waste removal within the sealed box. Through the suction of the second negative pressure pipe 20, the airflow environment in the cutting area can be controlled more effectively, working synergistically with the airflow of the positive pressure slit-type long air knife 53, thereby improving the removal effect of dust, waste, and molten beads, and preventing them from adhering to the electrode surface during the cutting process.

[0070] Working principle:

[0071] During laser cutting, the positive pressure slit-type long air knife 53 blows airflow towards the second surface of the electrode, creating a positive pressure airflow to clean dust and waste from the cutting area. Simultaneously, the second negative pressure duct 20 draws in this dust and waste through its air inlet, ensuring the cutting area remains clean and preventing dust from scattering into the equipment. The suction of the second negative pressure duct 20 and the airflow of the positive pressure slit-type long air knife 53 work in perfect harmony to clean the electrode surface and ensure the stability and quality of the laser cutting process.

[0072] By adopting the above technical solution, this utility model effectively improves the control of airflow in the cutting area by setting a second through hole and a second negative pressure pipe 20 on the side wall of the sealed box body 10. The second negative pressure pipe 20 works in conjunction with the positive pressure slit-type long air knife 53 to effectively clean up dust, waste and molten beads generated during the cutting process, keep the cutting area clean, and ensure the accuracy and stability of laser cutting.

[0073] In one embodiment of this application, a dust-collecting air knife 58 is provided on one side of the dust scraper 57, and the dust-collecting air knife 58 is used to blow the dust on the scraper into the second negative pressure pipe 20.

[0074] Specifically, a suction air knife 58 is installed on one side of the dust removal scraper 57. The function of the suction air knife 58 is to blow the dust adhering to the dust removal scraper 57 into the second negative pressure pipe 20 through the airflow it blows. This design effectively improves the dust removal efficiency, ensures that the dust removal scraper 57 can be kept clean, and avoids the impact of dust accumulation on the scraper's function. Through its linkage with the second negative pressure pipe 20, the suction air knife 58 guides the dust on the scraper surface into the negative pressure pipe in a timely manner, reducing the diffusion of dust inside the equipment and ensuring the cleanliness of the cutting area.

[0075] By adopting the above technical solution, this utility model, through the installation of a dust-collecting air knife 58 on one side of the dust-collecting scraper 57, can effectively remove dust from the scraper surface in a timely manner and guide it to the second negative pressure pipe 20. This design not only ensures the cleanliness of the scraper and avoids scraper failure caused by dust accumulation, but also reduces the interference of dust on other components of the equipment, thereby improving the stability and working efficiency of the equipment.

[0076] In one embodiment of this application, an L-shaped baffle 61 is provided below the area between the laser cutting assembly 40 and the electrode sheet, and a dust removal air knife 62 is provided on one side of the L-shaped baffle 61 to blow dust on the L-shaped baffle 61 into the second negative pressure pipe 20.

[0077] Specifically, an L-shaped baffle 61 is installed below the area between the laser cutting assembly 40 and the electrode. The L-shaped baffle 61 is designed primarily to block waste, molten beads, and dust that may be ejected during laser cutting. The presence of the L-shaped baffle 61 ensures that waste within the cutting area is effectively guided to the waste conveying channel or the second negative pressure pipe 20, while preventing dust and waste from spreading outside the laser cutting area or to other equipment components.

[0078] A dust-collecting air knife 62 is positioned on one side of the L-shaped baffle 61 to guide the dust accumulated on the baffle 61 to the second negative pressure duct 20 via airflow. The air outlet of the dust-collecting air knife 62 faces the L-shaped baffle 61, causing the dust on the baffle surface to be blown away and quickly sucked into the second negative pressure duct 20 for processing. This design ensures that waste and dust generated during the cutting process can be removed promptly.

[0079] Working principle:

[0080] During laser cutting, the L-shaped baffle 61 effectively prevents waste from splashing out and helps guide the waste towards the correct cleaning direction. At the same time, the dust removal air knife 62 set on one side of the baffle blows out airflow to blow away the dust accumulated on the surface of the baffle and guides these dust particles into the second negative pressure pipe 20 through the airflow.

[0081] By adopting the above technical solution, this utility model effectively prevents dust and waste generated during the cutting process from splashing out of the equipment by setting an L-shaped baffle 61 below the area between the laser cutting component 40 and the electrode and equipping it with a dust removal air knife 62, thus maintaining the cleanliness of the equipment and avoiding the impact of dust on cutting accuracy. The dust removal air knife 62 further improves the efficiency of dust removal by blowing the dust accumulated on the L-shaped baffle 61 into the second negative pressure pipe 20.

[0082] In one embodiment of this application, a vertically arranged waste stripping assembly 30 is further provided at the discharge port, the waste stripping assembly 30 comprising:

[0083] The first adsorption box 31 is provided with at least two guide rollers 311;

[0084] The second adsorption box 32 is located below the first adsorption box 31;

[0085] First drive unit 34; and

[0086] The adsorption belt 33 is sleeved on the first adsorption box 31, the second adsorption box 32, and the first driving member 34. Under the restriction of the guide roller 311 and the drive of the driving member of the first driving member 34, it can rotate around the output shaft of the first adsorption box 31, the second adsorption box 32, and the first driving member 34. The waste belt can adhere to the adsorption belt 33 under the adsorption of the first adsorption box 31 and the second adsorption box 32 to restrict the movement of the waste belt.

[0087] Specifically, the first adsorption box 31 is equipped with at least two guide rollers 311. The function of these guide rollers 311 is to ensure that the adsorption belt 33 moves along the correct trajectory during operation. The guide rollers 311 can effectively control the movement path of the adsorption belt 33, ensuring that it does not deviate from the track during the collection and transportation of waste belt.

[0088] The second adsorption chamber 32 is located below the first adsorption chamber 31 and works in conjunction with it. The design of the second adsorption chamber 32 allows the adsorption belt 33 to rotate smoothly around both chambers, ensuring stable collection of the waste belt.

[0089] The first driving component 34 is used to drive the adsorption belt 33 to rotate along the first adsorption box 31, the second adsorption box 32, and the output shaft of the first driving component 34. The driving component is powered by a power source such as an electric motor or a servo motor to control the movement of the adsorption belt 33, thereby driving the collection and conveying of waste belt.

[0090] The adsorption belt 33 is sleeved on the output shaft of the first adsorption box 31, the second adsorption box 32, and the first driving member 34, and can rotate around these components under the constraint of the guide roller 311 and the drive of the driving member. The adsorption belt 33 is provided with air vents to allow airflow to pass through. The negative pressure generated by the first adsorption box 31 and the second adsorption box 32 can firmly adsorb the waste belt on its surface, ensuring that the waste belt can be smoothly peeled off from the electrode after cutting and collected and sent to the waste treatment system.

[0091] By adopting the above technical solution, this utility model, through the setting of the waste strip stripping component 30, can effectively separate the waste strip generated during laser cutting from the electrode sheet, and smoothly collect and transport the waste strip to the waste treatment system through the adsorption belt 33. This design not only improves the waste treatment efficiency and avoids the impact of waste strip on subsequent processes, but also ensures the quality and stability of the electrode sheet during the cutting process.

[0092] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A laser cutting device for forming lithium battery tabs, characterized in that, include: The sealing box body has a feed inlet at the top and a feed taper adjustment roller at the feed inlet that can tension or relax the electrode sheet. The first negative pressure pipe extends into the body of the sealing box through the first through hole and is a first negative pressure pipe. A cutting adsorption plate is formed on the cutting adsorption plate, and the cutting adsorption plate is set at the air inlet of the first negative pressure pipe. When the electrode enters the sealed box body through the feed tapered adjustment roller, the cutting adsorption plate adsorbs the non-cut area on the electrode. A laser cutting assembly is used to cut the electrode plates inside the sealed box body to form electrode tabs on the electrode plates; as well as A suspended cutting pressure roller is disposed inside the sealed box. The bottom of the sealed box is provided with a discharge port. The suspended cutting pressure roller is used to send the cut electrode sheet out from the discharge port.

2. The lithium battery tab forming laser cutting equipment as described in claim 1, characterized in that, It also includes: defining the side of the electrode closest to the cutting adsorption plate as the first side of the electrode; and the side opposite to the first side as the second side of the electrode; The sealed box body is equipped with a positive pressure slit-type long air knife, and the air outlet of the positive pressure slit-type long air knife faces the second side of the electrode.

3. The lithium battery tab forming laser cutting equipment as described in claim 2, characterized in that, The sealed box body is equipped with a positive pressure slit short air knife, which is located on one side of the cutting adsorption plate and is used to continue cleaning the first surface of the electrode that has passed through the cutting adsorption plate. The air outlet direction of the positive pressure slit short air knife is the same as that of the positive pressure slit long air knife.

4. The lithium battery tab forming laser cutting equipment as described in claim 1, characterized in that, The first negative pressure pipe is equipped with a long strip-shaped air inlet.

5. The lithium battery tab forming laser cutting equipment as described in claim 2, characterized in that, The sealed box body is also equipped with a dust removal scraper, which abuts against the suspended cutting roller to remove dust from the suspended cutting roller.

6. The lithium battery tab forming laser cutting equipment as described in claim 4, characterized in that, The sealed box body is also connected to a scraper dust collection box, which is used to collect the dust peeled off by the dust removal scraper from the suspended cutting roller.

7. The lithium battery tab forming laser cutting equipment as described in claim 5, characterized in that, The side wall of the sealed box body is also provided with a second through hole, which is connected to a second negative pressure pipe. The air inlet of the second negative pressure pipe faces the air outlet of the positive pressure slit-type long air knife.

8. The lithium battery tab forming laser cutting equipment as described in claim 7, characterized in that, One side of the dust removal scraper is equipped with a dust suction air knife, which is used to blow the dust on the scraper into the second negative pressure pipe.

9. The lithium battery tab forming laser cutting equipment as described in claim 5, characterized in that, An L-shaped baffle is provided below the area between the laser cutting component and the electrode. A dust removal air knife is provided on one side of the L-shaped baffle to blow dust on the L-shaped baffle into the second negative pressure pipe.

10. The lithium battery tab forming laser cutting equipment as described in claim 1, characterized in that, The discharge port is also equipped with a vertically arranged waste stripping assembly, which includes: The first adsorption box is equipped with at least two guide rollers; The second adsorption chamber is located below the first adsorption chamber; First driving component; and The adsorption belt is sleeved on the first adsorption box, the second adsorption box, and the first driving component. Under the restriction of the guide roller and the drive of the first driving component, it can rotate around the output shaft of the first adsorption box, the second adsorption box, and the first driving component. The waste belt can adhere to the adsorption belt under the adsorption of the first adsorption box and the second adsorption box to restrict the movement of the waste belt.

Images