Laser cutting structure

Abstract

The utility model relates to a laser cutting structure, which comprises a laser assembly, a dust hood and a hollow roller, the hollow roller is provided with a tab support plate, the tab support plate is arranged at the end part of the hollow roller, the dust hood is arranged between the laser assembly and the hollow roller, the dust hood is close to the hollow roller, and the hollow roller is arranged on the hollow roller. The hollow roller is arranged on the pole lug supporting plate and is aligned with the pole lug supporting plate, a pole piece is driven by bypassing the hollow roller, and the laser assembly cuts the pole piece on the pole lug supporting plate to form a pole lug. According to the laser cutting structure, the tab supporting plate suspends the pole piece area where the tab needs to be cut, so that the pole piece is stably subjected to tab laser cutting in the suspended state, dust and waste generated during cutting are easily collected by the dust hood and the hollow roller, the quality of a produced battery cell can be effectively guaranteed, the space of the cutting receding hole is small, and the cutting efficiency is improved. And the suspended area is small, shaking is small during cutting, it is guaranteed that the cutting point is within the defocusing amount, and the cutting performance is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a laser cutting structure. Background Art

[0002] During the battery cell production process, after the electrode is coated with material, the tabs need to be cut. With the advancement of industrial technology, laser cutting is the predominant method for cutting electrode tabs. Laser cutting not only offers high efficiency, significantly improving electrode production efficiency, but also provides a precise and controllable cutting path, effectively ensuring product yield.

[0003] However, in the existing laser cutting process of the pole piece, the pole piece is usually cut by directly emitting a laser while the pole piece is moving on the unwinding table. In this way, the intensity and cutting time of the laser need to be more precisely controlled during the cutting process to avoid the laser burning the work surface. In addition, because one side of the pole piece is attached to the unwinding table, the dust and waste generated during the cutting process are not easy to collect and are likely to remain on the work surface, affecting the pole piece cutting process of the next pole piece. At the same time, the dust remaining on the unwinding table adheres to the pole piece and will have a negative impact on the quality of the produced battery cells. Utility Model Content

[0004] The main purpose of the present utility model is to provide a laser cutting structure to solve the above technical problems. The pole piece can be laser cut stably in a suspended state, and the generated dust and waste can be easily collected, which can effectively ensure the quality of the produced battery cells.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A laser cutting structure includes a laser assembly, a dust hood and a hollow roller. A pole lug support plate is provided on the hollow roller, and the pole lug support plate is installed at the end of the hollow roller. The dust hood is installed between the laser assembly and the hollow roller. The dust hood is close to the hollow roller and aligned with the pole lug support plate. The pole piece is transmitted around the hollow roller. The laser assembly cuts the pole piece on the pole lug support plate to form a pole lug.

[0007] As a preferred technical solution, a cutting avoidance hole is provided on the tab support plate, and the cutting avoidance hole is aligned with the laser assembly.

[0008] As a preferred technical solution, the tab support plate is provided with through holes, which are respectively connected to the cutting avoidance holes and the hollow roller.

[0009] As a preferred technical solution, the dust hood and the hollow roller are connected to negative air pressure.

[0010] As a preferred technical solution, the shape of the dust hood matches the surface of the hollow roller.

[0011] As a preferred technical solution, the laser assembly includes a laser, a galvanometer and a field mirror. The field mirror is fixed on the galvanometer. The laser emits a light beam to the galvanometer. The galvanometer is periodically offset to form an offset light beam. The offset light beam cuts the pole piece after passing through the field mirror.

[0012] The beneficial effects of the present invention are: in the above-mentioned laser cutting structure, the pole piece area where the pole piece needs to be cut is suspended on the pole piece support plate, so that the pole piece can be laser cut smoothly in the suspended state, and the dust and waste generated by the cutting can be easily collected by the dust hood and the hollow roller, which can effectively ensure the quality of the produced battery cells, and the space for cutting the air-avoidance hole is smaller, so that the suspended area is smaller, and the pole jitter is smaller during cutting, which ensures that the cutting point is within the defocus amount and the cutting performance is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the laser cutting structure involved in the present utility model;

[0014] Figure 2 This is a top view of the laser cutting structure involved in the present utility model;

[0015] Figure 3 It is a side view of the laser cutting structure involved in the present utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] Please combine Figure 1-Figure 3As shown, a laser cutting structure includes a laser assembly 1, a dust cover 3 and a hollow roller 2, a pole ear support plate 21 is provided on the hollow roller 2, the pole ear support plate 21 is installed at the end of the hollow roller 2, the dust cover 3 is installed between the laser assembly 1 and the hollow roller 2, the dust cover 3 is close to the hollow roller 2, and is aligned with the pole ear support plate 21, the pole piece is transmitted around the hollow roller 2, the laser assembly 1 cuts the pole piece on the pole ear support plate 21 to form the pole ear, the pole ear support plate 21 is provided with a cutting avoidance hole 22 and a through hole 23, the cutting avoidance hole 22 is aligned with the laser assembly 1, and the cutting avoidance hole 22 makes the pole piece area where the pole ear needs to be cut suspended, so that the pole piece is in a suspended state The laser cutting of the pole piece is carried out smoothly, and the dust and waste generated are easily collected by the dust hood 3 and the hollow roller 2, and the quality of the produced battery cells can be effectively guaranteed. The suspended area is small, so that the pole jitters less during cutting, ensuring that the cutting point is within the defocus range, and the cutting performance is more stable. The through hole 23 is connected to the cutting avoidance hole 22 and the hollow roller 2 respectively, and the dust hood 3 is connected to the hollow roller 2 with negative air pressure, so that the airflow direction of the hollow roller 2 and the dust hood 3 is the same, ensuring that the air pressure at both ends of the pole piece is consistent, thereby further improving the stability of laser cutting. The shape of the dust hood 3 matches the surface of the hollow roller 2, so that the dust hood 3 can be closer to the hollow roller 2, ensuring the dust collection effect of the dust hood 3.

[0018] The laser assembly 1 includes a laser 11, a galvanometer 12 and a field lens 13. The field lens 13 is fixed on the galvanometer 12. The laser 11 emits a light beam to the galvanometer 12. The galvanometer 12 is periodically offset to form an offset light beam. After the offset light beam passes through the field lens 13, it cuts the end of the pole piece located on the cutting avoidance hole 12 to form a pole ear.

[0019] The above-described embodiments are merely 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 scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A laser cutting structure, characterized in that: It includes a laser assembly, a dust hood and a hollow roller. The hollow roller is provided with a pole lug support plate, and the pole lug support plate is installed at the end of the hollow roller. The dust hood is installed between the laser assembly and the hollow roller. The dust hood is close to the hollow roller and aligned with the pole lug support plate. The pole piece is transmitted around the hollow roller. The laser assembly cuts the pole piece on the pole lug support plate to form a pole lug.

2. The laser cutting structure according to claim 1, characterized in that: A cutting avoidance hole is provided on the tab support plate, and the cutting avoidance hole is aligned with the laser assembly.

3. The laser cutting structure according to claim 2, characterized in that: The tab support plate is provided with through holes, which are respectively connected to the cutting avoidance holes and the hollow roller.

4. The laser cutting structure according to claim 3, characterized in that: The dust hood and the hollow roller are connected to negative air pressure.

5. The laser cutting structure according to claim 4, characterized in that: The shape of the dust cover matches the surface of the hollow roller.

6. The laser cutting structure according to claim 1, characterized in that: The laser assembly includes a laser, a galvanometer and a field mirror. The field mirror is fixed on the galvanometer. The laser emits a light beam to the galvanometer. The galvanometer is periodically offset to form an offset light beam. The offset light beam cuts the pole piece after passing through the field mirror.

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