Laser cutting device and battery processing system

By designing a laser cutting device in the pole cutting device, and using the coordinated work of the conveying mechanism and the cutting mechanism, the problems of low cutting efficiency and insufficient precision in the prior art are solved, and efficient and accurate cutting effects are achieved.

CN222569605UActive Publication Date: 2025-03-07SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202420492344.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-13
Publication Date
2025-03-07
Estimated Expiration
2034-03-13

AI Technical Summary

Technical Problem

The existing pole-sheet cutting devices have shortcomings in terms of cutting efficiency and accuracy, especially in terms of difficulty in efficiently cutting pole-sheets with smaller and wide pole-sheets.

Method used

A laser cutting device is designed, including a conveying mechanism and a cutting mechanism. The conveying mechanism is arranged in the direction of movement of the electrode sheet tape. The cutting mechanism generates a cutting laser during the conveying process, so that the electrode sheet tape forms a cutting slot. The cutting laser path is a vector sum of the slit formation path and the conveyor movement path.

Benefits of technology

It realizes efficient cutting of pole pieces, improves cutting efficiency, maintains the transfer accuracy of pole pieces, and does not require tool replacement, and is suitable for pole pieces of all specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of battery processing, in particular to a laser cutting device and a battery processing system.The laser cutting device comprises a conveying mechanism and a cutting mechanism, and the conveying mechanism is arranged in the moving direction of a pole piece material belt and used for conveying the pole piece material belt; the cutting mechanism is suitable for generating cutting laser capable of enabling the pole piece material belt to form a cutting seam when the conveying mechanism conveys the pole piece material belt, and the cutting laser generating path is the vector sum of the cutting seam forming path and the moving path of the conveying mechanism in the cutting process. According to the laser cutting device, cutting of the pole piece can be completed while the conveying mechanism conveys the pole piece material belt, and the cutting efficiency is high. And moreover, as the conveying mechanism conveys continuously, a dragsaw is not needed, and the conveying precision of the pole piece is not influenced, so that the pole piece is conveyed to a downstream station at a higher conveying precision after being cut. And laser cutting is adopted, so that a cutter does not need to be replaced. No structural block exists between the pole piece and the cutting mechanism, and pole pieces of all specifications can be cut.
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Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a laser cutting device and a battery processing system. Background Art

[0002] There are generally three types of existing electrode cutting devices: First, mold knife cutting is used, which has low production efficiency and requires regular maintenance and replacement of tools. Second, laser intermittent feeding is used to cut the electrode. The entire action cycle time is equal to the laser cutting time plus the electrode feeding time. The action is serial. If the start and stop frequency of the conveying mechanism is forcibly increased to improve efficiency, the relative sliding between the high-speed pulling of the electrode and the conveying mechanism will affect the cutting and transmission accuracy of the electrode. Third, the upper and lower roller clamping method is used to convey the electrode. Since the upper roller will block part of the laser path, it is difficult to cut smaller width electrodes. Utility Model Content

[0003] The utility model provides a laser cutting device and a battery processing system, which are used to solve the problems of low pole piece cutting efficiency and difficulty in cutting pole pieces with smaller widths in the prior art.

[0004] On the one hand, the utility model provides a laser cutting device, comprising:

[0005] A conveying mechanism, arranged along the moving direction of the pole piece strip, for conveying the pole piece strip;

[0006] The cutting mechanism is suitable for generating a cutting laser capable of forming a slit on the pole piece material strip when the conveying mechanism transmits the pole piece material strip. The cutting laser generation path is the vector sum of the slit formation path and the movement path of the conveying mechanism during the cutting process.

[0007] In some specific embodiments, laser avoidance holes corresponding to the cutting slits are evenly opened on the conveying mechanism.

[0008] In some specific embodiments, the cutting mechanism includes:

[0009] A first cutting section, wherein the cutting laser generated by the first cutting section can form a first slit on the pole piece strip;

[0010] The second cutting part is located at the downstream side of the first cutting part. The cutting laser generated by the second cutting part can form a second slit on the pole piece strip. The first slit and the second slit are spaced apart to form a complete slit.

[0011] In some specific embodiments, the delivery mechanism includes:

[0012] The first conveying part is evenly provided with first laser avoidance holes corresponding to the first slits;

[0013] The second conveying part is located at the downstream side of the first conveying part and is evenly provided with second laser avoidance holes corresponding to the second slits.

[0014] In some specific embodiments, the first conveying part includes:

[0015] A first vacuum chamber, capable of generating negative pressure for adsorbing the electrode strip;

[0016] A first conveyor belt is sleeved on the first vacuum chamber and is used to support and convey the electrode sheet material belt. The first laser avoidance hole is opened on the first conveyor belt;

[0017] And / or, the second conveying unit comprises:

[0018] The second vacuum chamber is capable of generating negative pressure for adsorbing the electrode strip;

[0019] The second conveyor belt is sleeved on the second vacuum chamber and is used for supporting and conveying the electrode sheet material belt. The second laser avoidance hole is opened on the second conveyor belt.

[0020] In some specific embodiments, a first laser avoidance groove corresponding to the first slit is formed on the first vacuum cavity, and / or a second laser avoidance groove corresponding to the second slit is formed on the second vacuum cavity.

[0021] In some specific embodiments,

[0022] A first vacuum adsorption hole is provided between two adjacent rows of first laser avoidance holes on the first conveyor belt;

[0023] And / or, a second vacuum adsorption hole is provided between two adjacent rows of second laser avoidance holes on the second conveyor belt.

[0024] In some specific embodiments, the cutting mechanism includes a laser galvanometer.

[0025] In some specific embodiments, it also includes:

[0026] Dust hood, used to collect smoke and dust generated during laser cutting;

[0027] The dust removal duct is connected to the dust removal hood and is used to lead out the smoke and dust generated during laser cutting.

[0028] On the other hand, the utility model further provides a battery processing system, including the laser cutting device provided by any of the above specific embodiments.

[0029] The beneficial effects of the utility model are as follows:

[0030] The laser cutting device of the utility model is provided with a conveying mechanism and a cutting mechanism. The conveying mechanism is provided along the moving direction of the pole piece material belt and is used to convey the pole piece material belt. The cutting mechanism can generate a cutting laser that can form a slit on the pole piece material belt when the conveying mechanism transmits the pole piece material belt, wherein the cutting laser path is the vector sum of the slit generation path and the moving path of the conveying mechanism during the cutting process. The cutting mechanism is enabled to complete the cutting of the pole piece while the conveying mechanism transmits the pole piece material belt, and the cutting efficiency is high. And because the conveying mechanism transports uninterruptedly, there is no need for a saw, and the transmission accuracy of the pole piece will not be affected, so that the pole piece can be transmitted to the downstream station with a high transmission accuracy after cutting. And laser cutting is adopted, and there is no need to replace the tool. There is no structural obstruction between the pole piece and the cutting mechanism, and pole pieces of all specifications can be cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A three-dimensional diagram of a laser cutting device according to an embodiment of the present utility model;

[0033] Figure 2 A top view of a laser cutting device according to an embodiment of the present utility model;

[0034] Figure 3 A bottom view of the laser cutting device according to an embodiment of the utility model;

[0035] Figure 4 This is a front view of the laser cutting device according to an embodiment of the utility model;

[0036] Figure 5 It is a left side view of the laser cutting device according to an embodiment of the utility model;

[0037] Figure 6 A vector synthesis diagram of the cutting laser generation path, the slit formation path, and the movement path.

[0038] Reference numerals:

[0039] 100-conveying mechanism, 110-first conveying part, 111-first vacuum chamber, 112-first conveying belt, 1121-first vacuum adsorption hole, 120-second conveying part, 121-second vacuum chamber, 122-second conveying belt, 1221-second vacuum adsorption hole, 130-laser avoidance hole, 131-first laser avoidance hole, 132-second laser avoidance hole, 200-cutting mechanism, 210-first cutting part, 220-second cutting part, 300-dust removal duct, 400-pole sheet material strip, 410-first slit, 420-second slit, A-cutting laser generation path, B-slit formation path, C-moving path. DETAILED DESCRIPTION

[0040] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] As shown in the background technology, when using a mold knife to cut the electrode, the cutting tool needs regular maintenance and frequent replacement; when using laser intermittent feeding to cut the electrode, it is difficult to improve the cutting efficiency, and high-speed pulling causes relative sliding between the electrode and the conveying mechanism, which will affect the cutting and conveying accuracy of the electrode; when using a clamping roller to convey the electrode, the upper roller blocks the laser path and it is difficult to cut small and wide electrodes.

[0042] To improve the above problems, this embodiment provides a laser cutting device, such as Figure 1-6 As shown, it includes a conveying mechanism 100 and a cutting mechanism 200, the conveying mechanism 100 is arranged along the moving direction of the pole piece material strip 400, and the conveying mechanism 100 is used to convey the pole piece material strip 400. The cutting mechanism 200 is suitable for generating a cutting laser that can form a slit on the pole piece material strip 400 when the conveying mechanism 100 transmits the pole piece material strip 400, wherein the cutting laser generation path A is the vector sum of the slit formation path B and the moving path C of the conveying mechanism 100 during the cutting process.

[0043] like Figure 1 As shown, in the laser cutting device of this embodiment, the conveying mechanism 100 is arranged along a straight line, and the pole piece strip 400 after unwinding is laid flat on the conveying mechanism 100, and the conveying mechanism 100 can convey the pole piece strip 400 to the downstream workstation in a straight line. The cutting mechanism 200 is arranged above the conveying mechanism 100, and the cutting mechanism 200 is used to emit a cutting laser while the conveying mechanism 100 transmits the pole piece strip 400. The cutting laser is perpendicular to the pole piece strip 400, and the orthographic projection of the cutting laser in the direction perpendicular to the pole piece strip 400 is the cutting laser generation path A, and the direction points from the starting point to the end point, as shown in FIG. Figure 6 As shown. While the cutting mechanism 200 emits the cutting laser, the conveying mechanism 100 is always in the process of conveying the pole piece material strip 400 without stopping. Therefore, the moving path of the conveying mechanism 100 during the cutting process, that is, the moving path C of the pole piece material strip 400 during the cutting process, is consistent with the moving direction of the pole piece material strip 400, from the starting point to the end point, as shown. Figure 6 By using the vector synthesis parallelogram rule, the slit formation path B of the pole piece strip 400 can be obtained, the direction of which is perpendicular to the movement direction of the pole piece strip 400 and points from the starting point to the end point, as shown in FIG. Figure 6 In the production of pole piece cutting, the length of the moving path C of the pole piece strip 400 during the cutting process can be controlled by presetting the conveying speed of the conveying mechanism 100, and the length of the slit forming path B of the pole piece strip 400 can be presetting to design the orthographic projection of the cutting laser irradiated on the pole piece strip 400, that is, the cutting laser generating path A, and form a slit on the pole piece strip 400 that meets the cutting requirements.

[0044] By utilizing the technical solution of this embodiment, the cutting mechanism 200 generates a cutting laser that can form a slit on the pole piece strip 400 when the conveying mechanism 100 transmits the pole piece strip 400, so that the cutting mechanism 200 can complete the cutting of the pole piece while the conveying mechanism 100 transmits the pole piece strip 400, and the cutting efficiency is high. Since the conveying mechanism 100 transports uninterruptedly, there is no need for a saw, which will not affect the transmission accuracy of the pole piece, so that the pole piece can be transmitted to the downstream station with a high transmission accuracy after cutting. And laser cutting is used, and there is no need to replace the tool. There is no structural obstruction between the pole piece and the cutting mechanism 200, so that the laser cutting device can cut pole pieces of all sheet width specifications.

[0045] like Figure 3 As shown, in the laser cutting device of this embodiment, laser avoidance holes 130 corresponding to the slits are evenly provided on the conveying mechanism 100. Specifically, the laser avoidance holes 130 are located below the slits, the length of the laser avoidance holes 130 is not less than the length of the slits, and the width of the laser avoidance holes 130 is not less than the width of the slits. When the conveying mechanism 100 supports the pole piece strip 400 and advances at a constant speed, the various laser avoidance holes on the conveying mechanism 100 pass through the cutting position in sequence. In the process of the laser avoidance holes 130 passing through the cutting position, the cutting mechanism 200 generates a cutting laser to form a slit on the pole piece strip 400. The cutting laser passes downward through the slits and the laser avoidance holes 130 in sequence. By providing the laser avoidance holes 130 on the conveying mechanism 100, the conveying mechanism 100 can be protected from damage by the cutting laser.

[0046] like Figure 1-Figure 5As shown, in the laser cutting device of this embodiment, the cutting mechanism 200 includes a first cutting part 210 and a second cutting part 220, wherein the cutting laser generated by the first cutting part 210 can form a first slit 410 on the pole piece strip 400. The second cutting part 220 is located on the downstream side of the first cutting part 210, and the cutting laser generated by the second cutting part 220 can form a second slit 420 on the pole piece strip 400, and the first slit 410 and the second slit 420 are arranged at intervals to form a complete slit. Specifically, a plurality of first cutting parts 210 are arranged along a direction perpendicular to the movement direction of the pole piece strip 400, and a plurality of second cutting parts 220 are arranged along a direction perpendicular to the movement direction of the pole piece strip 400, and the first cutting part 210 and the second cutting part 220 can respectively select laser galvanometers to emit cutting lasers through the laser galvanometers. The cutting lasers generated by the multiple first cutting parts 210 can form multiple first slits 410 in the pole piece strip 400, and the cutting lasers generated by the multiple second cutting parts 220 can form multiple second slits 420 in the pole piece strip 400. The multiple first slits 410 and the multiple second slits 420 are spaced apart at right angles to the movement direction of the pole piece strip 400, and the multiple first slits 410 and the multiple second slits 420 constitute a complete slit that passes horizontally through the pole piece strip 400.

[0047] It should be noted that, as an optional implementation, the cutting mechanism 200 may also include a third cutting part. The cutting laser generated by the third cutting part can form a third cut on the pole piece strip 400. The first cut 410, the second cut 420 and the third cut are spaced apart to form a complete cut.

[0048] By utilizing the technical solution of this embodiment, a first cutting portion 210 and a second cutting portion 220 are set. The first cutting portion 210 first forms a first slit 410 on the pole piece strip 400, and the second cutting portion 220 then forms a second slit 420 on the pole piece strip 400. The first slit 410 and the second slit 420 together form a complete slit. Compared with directly forming a completed slit, the length of the laser avoidance hole on the conveying mechanism 100 can be shortened, which is beneficial to maintaining the strength of the conveying mechanism 100 and making the conveying of the pole piece strip 400 more stable.

[0049] like Figure 1-5As shown, in the laser cutting device of this embodiment, the conveying mechanism 100 includes a first conveying part 110 and a second conveying part 120, wherein the first conveying part 110 is uniformly provided with first laser avoidance holes 131 corresponding to the first slit 410. The second conveying part 120 is located at the downstream side of the first conveying part 110, and the second conveying part 120 is uniformly provided with second laser avoidance holes 132 corresponding to the second slit 420. Specifically, the first conveying part 110 is uniformly provided with a plurality of first laser avoidance holes 131, and the plurality of first laser avoidance holes 131 are distributed along a rectangular array, and each first laser avoidance hole 131 is respectively located below the corresponding first slit 410, and the length of the first laser avoidance hole 131 is not less than the length of the first slit 410, and the width of the first laser avoidance hole 131 is not less than the width of the first slit 410. The second conveying portion 120 is evenly provided with a plurality of second laser avoidance holes 132, which are distributed along a rectangular array. Each second laser avoidance hole 132 is located below a corresponding second slit 420, and a length of the second laser avoidance hole 132 is not less than a length of the second slit 420, and a width of the second laser avoidance hole 132 is not less than a width of the second slit 420.

[0050] The pole piece material strip 400 first passes through the first conveying section 110. When the first conveying section 110 supports the pole piece material strip 400 and moves forward at a constant speed, the first laser avoidance holes 131 on the first conveying section 110 pass through the cutting position in sequence. In the process of the first laser avoidance holes 131 passing through the cutting position, the first cutting section 210 generates a cutting laser to form a first slit 410 on the pole piece material strip 400. The cutting laser passes downward through the first slit 410 and the first laser avoidance holes 131 in sequence to protect the first conveying section 110 from being damaged by the cutting laser. The pole piece material strip 400 then passes through the second conveying section 120. When the second conveying section 120 supports the pole piece material strip 400 and moves forward at a constant speed, the second laser avoidance holes 132 on the second conveying section 120 pass through the cutting position in sequence. In the process of the second laser avoidance holes 132 passing through the cutting position, the second cutting section 220 generates a cutting laser to form a second slit 420 on the pole piece material strip 400. The cutting laser passes downward through the second slit 420 and the second laser avoidance holes 132 in sequence to protect the second conveying section 120 from being damaged by the cutting laser.

[0051] like Figure 1-5As shown, in the laser cutting device of this embodiment, the first conveying part 110 includes a first vacuum chamber 111 and a first conveying belt 112, and the first vacuum chamber 111 can generate a negative pressure for adsorbing the pole piece material belt 400. Transmission shafts are provided at both ends of the first vacuum chamber 111, and the first conveying belt 112 is sleeved on the transmission shafts at both ends of the first vacuum chamber 111, one of which is connected to the servo motor, and the servo motor drives the first conveying belt 112 for transmission. The first conveying belt 112 is used to support and convey the pole piece material belt 400, and the first laser avoidance hole 131 is opened on the first conveying belt 112. The second conveying part 120 includes a second vacuum chamber 121 and a second conveying belt 122, and the second vacuum chamber 121 can generate a negative pressure for adsorbing the pole piece material belt 400. Transmission shafts are provided at both ends of the second vacuum chamber 121, and the second conveying belt 122 is sleeved on the transmission shafts at both ends of the second vacuum chamber 121, one of which is connected to the servo motor, and the servo motor drives the second conveying belt 122 for transmission. The second conveyor belt 122 is used for supporting and conveying the electrode sheet material belt 400 . The second laser avoidance hole 132 is opened on the second conveyor belt 122 .

[0052] By utilizing the technical solution of this embodiment, negative pressure is generated by the first vacuum chamber 111 and the second vacuum chamber 121, so that the first conveyor belt 112 and the second conveyor belt 122 can adsorb the pole piece material belt 400, thereby ensuring that the pole piece material belt 400 is tightly attached to the first conveyor belt 112 or the second conveyor belt 122 during the transmission process, and preventing the pole piece material belt 400 from shifting.

[0053] like Figure 1-5 As shown, in the laser cutting device of this embodiment, a first laser avoidance groove corresponding to the first slit 410 is provided on the first vacuum cavity 111, and a second laser avoidance groove corresponding to the second slit 420 is provided on the second vacuum cavity 121. The first laser avoidance groove and the second laser avoidance groove can protect the first vacuum cavity 111 and the second vacuum cavity 121, thereby preventing the cutting laser from damaging the first vacuum cavity 111 and the second vacuum cavity 121.

[0054] like Figure 1-5As shown, in the laser cutting device of this embodiment, a first vacuum adsorption hole 1121 is provided between two adjacent rows of first laser avoidance holes 131 on the first conveyor belt 112. A second vacuum adsorption hole 1221 is provided between two adjacent rows of second laser avoidance holes 132 on the second conveyor belt 122. The first vacuum adsorption hole 1121 is connected to the first vacuum cavity 111, so that a negative pressure can be formed on the side of the first conveyor belt 112 close to the pole piece material belt 400. The second vacuum adsorption hole 1221 is connected to the second vacuum cavity 121, so that a negative pressure can be formed on the side of the second conveyor belt 122 close to the pole piece material belt 400. By providing the first vacuum adsorption hole 1121 between two adjacent rows of first laser avoidance holes 131, the first laser avoidance groove in the first vacuum cavity 111 can be avoided, which is conducive to arranging a negative pressure cavity in the first vacuum cavity 111. Similarly, by opening the second vacuum adsorption holes 1221 between two adjacent rows of second laser avoidance holes 132 , the second laser avoidance grooves in the second vacuum cavity 121 can be avoided, which is beneficial for arranging a negative pressure cavity in the second vacuum cavity 121 .

[0055] like Figure 1 As shown, the laser cutting device of this embodiment also includes a dust hood and a dust removal duct 300. The dust hood is arranged at a position corresponding to the cutting position below the conveying mechanism 100, and the dust hood is used to collect smoke generated during laser cutting. The dust removal duct 300 is connected to the dust hood, and the dust removal duct 300 is used to lead out the smoke generated during laser cutting for centralized treatment.

[0056] Based on the same general utility model concept, the utility model also provides a battery processing system, including the laser cutting device provided by any of the above-mentioned specific embodiments.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A laser cutting device, characterized in that: include: A conveying mechanism, arranged along the moving direction of the pole piece strip, for conveying the pole piece strip; The cutting mechanism is suitable for generating a cutting laser capable of forming a slit on the pole piece strip when the conveying mechanism transfers the pole piece strip, and the cutting laser generating path is the vector sum of the slit forming path and the moving path of the conveying mechanism during the cutting process.

2. The laser cutting device according to claim 1, characterized in that: The conveying mechanism is evenly provided with laser avoidance holes corresponding to the cutting slits.

3. The laser cutting device according to claim 1 or 2, characterized in that: The cutting mechanism comprises: A first cutting part, wherein the cutting laser generated by the first cutting part can form a first slit on the pole piece strip; The second cutting part is located at the downstream side of the first cutting part. The cutting laser generated by the second cutting part can form a second slit on the pole piece strip. The first slit and the second slit are spaced apart to form a complete slit.

4. The laser cutting device according to claim 3, characterized in that: The conveying mechanism comprises: A first conveying portion, uniformly provided with first laser avoidance holes corresponding to the first slits; The second conveying portion is located at the downstream side of the first conveying portion and is evenly provided with second laser avoidance holes corresponding to the second slits.

5. The laser cutting device according to claim 4, characterized in that: The first conveying unit comprises: A first vacuum chamber, capable of generating negative pressure for adsorbing the electrode strip; A first conveyor belt is sleeved on the first vacuum chamber and is used to support and convey the electrode sheet material belt, and the first laser avoidance hole is opened on the first conveyor belt; And / or, the second conveying unit comprises: The second vacuum chamber is capable of generating negative pressure for adsorbing the electrode strip; The second conveyor belt is sleeved on the second vacuum chamber and is used for supporting and conveying the electrode sheet material belt. The second laser avoidance hole is opened on the second conveyor belt.

6. The laser cutting device according to claim 5, characterized in that: The first vacuum cavity is provided with a first laser avoidance groove corresponding to the first slit, and / or the second vacuum cavity is provided with a second laser avoidance groove corresponding to the second slit.

7. The laser cutting device according to claim 5, characterized in that: A first vacuum adsorption hole is provided between two adjacent rows of first laser avoidance holes on the first conveyor belt; And / or, a second vacuum adsorption hole is provided between two adjacent rows of second laser avoidance holes on the second conveyor belt.

8. The laser cutting device according to claim 1, characterized in that: The cutting mechanism comprises a laser galvanometer.

9. The laser cutting device according to claim 1, characterized in that: Also includes: Dust hood, used to collect smoke and dust generated during laser cutting; The dust removal duct is connected to the dust removal hood and is used to lead out the smoke and dust generated during laser cutting.

10. A battery processing system, characterized in that: The invention comprises the laser cutting device according to any one of claims 1 to 9.