Semi-solid lithium battery multi-tab laser cutting device and equipment thereof

Abstract

The utility model provides a semi-solid lithium battery multi-tab laser cutting device and equipment thereof. The multi-tab laser cutting device for the semi-solid lithium battery comprises a machine body, a roller conveying assembly and a laser cutting assembly. The passing roller conveying assembly comprises a first laser passing roller and a second laser passing roller. A laser cutting area is arranged between the first laser passing roller and the second laser passing roller, and the pole piece conveying path partially passes through the laser cutting area. The laser cutting assembly comprises a fixed seat and a laser cutter; the fixing base is fixedly connected with the machine body, the laser cutter is fixedly installed at the end, away from the machine body, of the fixing base, the laser cutter is located above the laser cutting area, the laser emitting end of the laser cutter perpendicularly faces the pole piece passing through the laser cutting area, and the laser cutter is used for laser cutting of the pole piece to form a multi-tab structure. A traditional contact type die cutting mode is replaced, the machining precision of the multi-tab structure can be remarkably improved through a laser cutting mode, and burrs are well reduced.

Description

Technical Field

[0001] This utility model relates to the field of semi-solid lithium battery technology, and in particular to a laser cutting device and equipment for multi-tab semi-solid lithium batteries. Background Technology

[0002] The multi-tab structure of semi-solid lithium batteries refers to the technology of using multiple tabs in battery design to improve the current transmission efficiency and rate performance of the battery. By arranging multiple tabs on the battery plates, the current load is distributed, the internal resistance is reduced, thereby improving the battery's high-current discharge capacity and rate performance.

[0003] Currently, in the actual processing of multi-tab structures, existing technologies generally use die-cutting machines to perform die-cutting operations on the electrode sheets. Specifically, the electrode sheets need to be fed into a mold, and the cutting tools in the mold are used to cut the electrode sheets to obtain a specific shape of electrode tab.

[0004] While the aforementioned contact die-cutting operation can achieve mass production of multi-tab structures, it has limitations when processing multi-tab structures for semi-solid-state lithium batteries, for example... Figure 1 The multi-pole structure shown is complex, and the cutting tools in the mold are prone to wear, which makes it difficult to guarantee the machining accuracy of the multi-pole structure and also causes a lot of burrs to be generated in the multi-pole structure. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a semi-solid lithium battery multi-tab laser cutting device and equipment that can improve the processing accuracy of multi-tab structures and reduce burr generation by replacing the traditional contact die-cutting method.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A laser cutting device for multi-tab semi-solid lithium batteries includes a drive and traction assembly for driving the electrodes on the electrode conveying path. The device further includes:

[0008] Organism;

[0009] The roller conveying assembly includes a first laser roller and a second laser roller; the first laser roller and the second laser roller are respectively fixedly connected to the machine body, the first laser roller and the second laser roller are respectively located on the electrode conveying path, a laser cutting area is provided between the first laser roller and the second laser roller, and part of the electrode conveying path passes through the laser cutting area.

[0010] A laser cutting assembly includes a mounting base and a laser cutter. The mounting base is fixedly connected to the machine body, and the laser cutter is fixedly installed on one end of the mounting base away from the machine body, such that the laser cutter is located above the laser cutting area, and the laser emitting end of the laser cutter is perpendicularly oriented towards the electrode passing through the laser cutting area. The laser cutter is used to laser cut the electrode to form a multi-electrode structure.

[0011] In one embodiment, the first laser roller and the second laser roller are arranged on the same horizontal line so that the electrode remains parallel to the horizontal plane when passing through the laser cutting area.

[0012] In one embodiment, the semi-solid lithium battery multi-tab laser cutting device further includes a dust collection component; the dust collection component is disposed on the side adjacent to the laser cutting area.

[0013] In one embodiment, the dust collection assembly includes a vacuum connector, a vacuum suction hood, and a negative pressure system; one end of the vacuum connector passes through the machine body and is connected to the negative pressure system, which is used to generate a vacuum negative pressure; the vacuum suction hood is located at the other end of the vacuum connector and is connected to the vacuum connector; the dust collection port of the vacuum suction hood is oriented towards the laser cutting area.

[0014] In one embodiment, the roller conveying assembly further includes a first tensioning roller group and a second tensioning roller group; the first tensioning roller group and the second tensioning roller group are sequentially distributed along the electrode conveying path, and the first tensioning roller group and the second tensioning roller group are used to adjust the tension of the electrode.

[0015] In one embodiment, the semi-solid lithium battery multi-tab laser cutting device further includes a correction component; the correction component includes a correction base, a correction adjustment plate, and a correction roller group; the correction base is fixedly connected to the machine body, one side of the correction adjustment plate is movably connected to the correction base, the correction roller group is fixedly installed on the other side of the correction adjustment plate, the correction roller group is located on the electrode conveying path, and the correction adjustment plate is used to adjust the position of the electrode passing through the correction roller group.

[0016] In one embodiment, the correction base, the correction adjustment plate, and the correction roller group are located between the first tension roller group and the second tension roller group on the electrode conveying path.

[0017] In one embodiment, the correction adjustment plate is driven by a servo motor.

[0018] A semi-solid lithium battery multi-tab laser cutting device includes the semi-solid lithium battery multi-tab laser cutting device described in any of the above embodiments.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] By positioning the laser cutter above the laser cutting zone, with its laser emission end perpendicularly facing the electrode sheet passing through the zone, and using laser cutting to cut the electrode sheet through the zone, a multi-tab structure is formed. This novel semi-solid-state lithium battery multi-tab laser cutting device can significantly improve the processing accuracy of the multi-tab structure by replacing traditional contact die-cutting methods. It can also adapt to cutting more complex multi-tab structures and effectively reduce burr generation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the multipole ear structure in one embodiment;

[0023] Figure 2 This is a schematic diagram of the structure of a laser cutting device for a semi-solid-state lithium battery multi-tab in one embodiment;

[0024] Figure 3 for Figure 2 The diagram shows the structure of a laser cutting device for a semi-solid lithium battery multi-tab.

[0025] Figure 4 for Figure 2 The exploded view of a partial structure of the laser cutting device for semi-solid lithium battery multi-tabs is shown.

[0026] Reference numerals: Semi-solid lithium battery multi-tab laser cutting device 10; machine body 100; roller conveying assembly 200; first laser roller 210; second laser roller 220; laser cutting area 201; first tensioning roller group 230; second tensioning roller group 240; laser cutting assembly 300; fixed base 310; laser cutter 320; dust collection assembly 400; vacuum pipe 410; vacuum suction hood 420; correction assembly 500; correction base 510; correction adjustment plate 520; correction roller group 530. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] This disclosure provides a laser cutting device for a semi-solid-state lithium battery multi-tab structure, including a drive traction assembly for driving the electrode sheets on the electrode sheet conveying path. The device also includes a machine body, a roller conveying assembly, and a laser cutting assembly. The roller conveying assembly includes a first laser roller and a second laser roller, both fixedly connected to the machine body and located on the electrode sheet conveying path. A laser cutting zone is provided between the first and second laser rollers, and a portion of the electrode sheet conveying path passes through the laser cutting zone. The laser cutting assembly includes a fixed base and a laser cutter. The fixed base is fixedly connected to the machine body, and the laser cutter is fixedly installed at the end of the fixed base away from the machine body, positioned above the laser cutting zone, with its laser emission end perpendicularly facing the electrode sheet passing through the laser cutting zone. The laser cutter is used to laser cut the electrode sheet to form a multi-tab structure.

[0031] Please see Figures 1 to 4 To better understand the semi-solid-state lithium battery multi-tab laser cutting device 10 of this application, the following further explanation of the semi-solid-state lithium battery multi-tab laser cutting device 10 is provided:

[0032] One embodiment of the semi-solid lithium battery multi-tab laser cutting device 10 includes a body 100, a roller conveying assembly 200 and a laser cutting assembly 300. The roller conveying assembly 200 includes a first laser roller 210 and a second laser roller 220; the first laser roller 210 and the second laser roller 220 are respectively fixedly connected to the machine body 100, and the first laser roller 210 and the second laser roller 220 are respectively located on the electrode conveying path. A laser cutting area 201 is provided between the first laser roller 210 and the second laser roller 220, and part of the electrode conveying path passes through the laser cutting area 201; the laser cutting assembly 300 includes a fixing base 310 and a laser cutter 320; the fixing base 310 is fixedly connected to the machine body 100, and the laser cutter 320 is fixedly installed on the fixing base 310 at the end away from the machine body 100, so that the laser cutter 320 is located above the laser cutting area 201, and the laser emitting end of the laser cutter 320 is perpendicularly oriented towards the electrode passing through the laser cutting area 201. The laser cutter 320 is used to laser cut the electrode to form a multi-electrode structure.

[0033] In this embodiment, by placing the laser cutter 320 above the laser cutting area 201, the laser emitting end of the laser cutter 320 is perpendicularly oriented towards the electrode sheet passing through the laser cutting area 201. The laser cutter 320 cuts the electrode sheet passing through the laser cutting area 201 using laser cutting to form a multi-tab structure. The semi-solid-state lithium battery multi-tab laser cutting device 10 of this invention can significantly improve the processing accuracy of the multi-tab structure by replacing the traditional contact die-cutting method and using laser cutting. It can also adapt to the cutting of more complex multi-tab structures and effectively reduce the generation of burrs.

[0034] like Figure 2 and Figure 3 As shown, in one embodiment, the first laser roller 210 and the second laser roller 220 are arranged on the same horizontal line so that the electrode remains parallel to the horizontal plane when passing through the laser cutting area 201.

[0035] It is understood that in this embodiment, the laser emitting end of the laser cutter 320 is vertically oriented towards the electrode passing through the laser cutting area 201, and the electrode passing through the laser cutting area 201 can remain parallel to the horizontal plane. In this way, the laser cutter 320 can cut the electrode passing through the laser cutting area 201 with high precision, and the flatness of the cut surface of the formed multi-electrode structure is good.

[0036] like Figure 2 and Figure 3As shown, in one embodiment, the semi-solid-state lithium battery multi-tab laser cutting device 10 further includes a dust collection assembly 400; the dust collection assembly 400 is disposed on the side adjacent to the laser cutting area 201. In one embodiment, the dust collection assembly 400 includes a vacuum pipe 410, a vacuum suction hood 420, and a negative pressure system; one end of the vacuum pipe 410 penetrates the body 100 and is connected to the negative pressure system, the negative pressure system being used to generate a vacuum negative pressure; the vacuum suction hood 420 is disposed at the other end of the vacuum pipe 410 and is connected to the vacuum pipe 410; the dust collection port of the vacuum suction hood 420 is disposed facing the laser cutting area 201.

[0037] It is understood that by setting the dust collection port of the vacuum suction hood 420 toward the laser cutting area 201, the small amount of dust or smoke generated by the laser cutter 320 during the laser cutting process can be quickly captured by the dust collection port of the vacuum suction hood 420. The vacuum negative pressure generated by the negative pressure system can effectively draw the dust or smoke to the vacuum connector 410, thereby avoiding the pollution of the electrode or the environment caused by the dust or smoke.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment, the roller conveying assembly 200 further includes a first tensioning roller group 230 and a second tensioning roller group 240; the first tensioning roller group 230 and the second tensioning roller group 240 are sequentially distributed along the electrode conveying path, and the first tensioning roller group 230 and the second tensioning roller group 240 are used to adjust the tension of the electrode.

[0039] It is understood that in this embodiment, the first tensioning roller group 230, the second tensioning roller group 240, the first laser roller 210, and the second laser roller 220 are all located on the electrode conveying path. Specifically, the first tensioning roller group 230 and the second tensioning roller group 240 are located at the front end of the electrode conveying path, and the first laser roller 210 and the second laser roller 220 are located at the rear end of the electrode conveying path. In this way, before the electrode is conveyed to the laser cutting area 201 along the electrode conveying path, the tension of the electrode can be adjusted in advance by the first tensioning roller group 230 and the second tensioning roller group 240, so that the electrode has a good tension when passing through the laser cutting area 201, thereby ensuring the cutting accuracy of the electrode, that is, the processing accuracy of the multi-tab structure.

[0040] It should be noted that in this embodiment, the first tensioning roller group 230 and the second tensioning roller group 240 are each composed of two tensioning rollers. Of course, this is not a limitation, and those skilled in the art can make other choices as needed.

[0041] like Figures 2 to 4As shown, in one embodiment, the semi-solid-state lithium battery multi-tab laser cutting device 10 further includes a correction component 500; the correction component 500 includes a correction base 510, a correction adjustment plate 520, and a correction roller group 530; the correction base 510 is fixedly connected to the machine body 100, one side of the correction adjustment plate 520 is movably connected to the correction base 510, and the correction roller group 530 is fixedly installed on the other side of the correction adjustment plate 520. The correction roller group 530 is located on the electrode conveying path, and the correction adjustment plate 520 is used to adjust the position of the electrode passing through the correction roller group 530. In one embodiment, the correction base 510, the correction adjustment plate 520, and the correction roller group 530 are located between the first tensioning roller group 230 and the second tensioning roller group 240 on the electrode conveying path.

[0042] It is understandable that by setting the alignment base 510, the alignment adjustment plate 520, and the alignment roller group 530 between the first tensioning roller group 230 and the second tensioning roller group 240, the alignment adjustment plate 520 can effectively improve the accuracy of adjusting the position of the electrode after passing through the alignment roller group 530 while adjusting the tension of the electrode sheet. This avoids positional deviation of the electrode sheet when it is conveyed to the laser cutting area 201, thereby ensuring the cutting accuracy of the laser cutter 320.

[0043] It should be noted that the working principle of adjusting the position of the electrode sheets after passing through the correction roller group 530 is existing technology and will not be described in detail here.

[0044] like Figure 3 and Figure 4 As shown, in one embodiment, the alignment adjustment plate 520 is driven by a servo motor (not shown). This allows the alignment adjustment plate 520 to have a better response rate when adjusting the position of the electrode sheets passing through the alignment roller group 530, thereby improving the adjustment efficiency of the alignment adjustment plate 520.

[0045] This application also provides a laser cutting device for multi-tab semi-solid lithium batteries, including the laser cutting apparatus for multi-tab semi-solid lithium batteries described in any of the above embodiments.

[0046] In this embodiment, by placing the laser cutter above the laser cutting area, the laser emission end of the laser cutter is perpendicularly directed towards the electrode sheet passing through the laser cutting area. The laser cutter then cuts the electrode sheet passing through the laser cutting area using a laser cutting method to form a multi-tab structure. This invention's semi-solid-state lithium battery multi-tab laser cutting equipment can significantly improve the processing accuracy of the multi-tab structure by replacing the traditional contact die-cutting method. It can also adapt to the cutting of more complex multi-tab structures and effectively reduce burr generation.

[0047] Compared with the prior art, the present invention has at least the following advantages:

[0048] By positioning the laser cutter above the laser cutting zone, with its laser emission end perpendicularly facing the electrode sheet passing through the zone, and using laser cutting to cut the electrode sheet through the zone, a multi-tab structure is formed. This novel semi-solid-state lithium battery multi-tab laser cutting device can significantly improve the processing accuracy of the multi-tab structure by replacing traditional contact die-cutting methods. It can also adapt to cutting more complex multi-tab structures and effectively reduce burr generation.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A semi-solid lithium battery multi-tab laser cutting device comprising a drive traction assembly for driving a tab on a tab conveying path to be conveyed, characterized in that, The semi-solid lithium battery multi-tab laser cutting device further comprises: a machine body; a roller conveying assembly comprising a first laser roller and a second laser roller, wherein the first laser roller and the second laser roller are fixedly connected to the machine body, the first laser roller and the second laser roller are respectively located on the tab conveying path, a laser cutting area is arranged between the first laser roller and the second laser roller, and the tab conveying path passes through the laser cutting area; a laser cutting assembly comprising a fixing seat and a laser cutter, wherein the fixing seat is fixedly connected to the machine body, the laser cutter is fixedly installed at one end of the fixing seat away from the machine body, the laser cutter is located above the laser cutting area, and a laser emission end of the laser cutter is vertically directed towards the tab passing through the laser cutting area, and the laser cutter is used for laser cutting the tab to form a multi-tab structure.

2. The semi-solid lithium battery multi-tab laser cutting device of claim 1, wherein, The first laser roller and the second laser roller are arranged on the same horizontal line to make the tab keep parallel to the horizontal plane when passing through the laser cutting area.

3. The semi-solid lithium battery multi-tab laser cutting device of claim 1, wherein, The semi-solid lithium battery multi-tab laser cutting device further comprises a dust collection assembly arranged adjacent to the side of the laser cutting area.

4. The semi-solid lithium battery multi-tab laser cutting device of claim 3, wherein, The dust collection assembly comprises a vacuum pipe, a vacuum suction cover and a negative pressure system, one end of the vacuum pipe penetrates through the machine body and is in communication with the negative pressure system, the negative pressure system is used for generating vacuum negative pressure, the vacuum suction cover is arranged at the other end of the vacuum pipe and is in communication with the vacuum pipe, and a dust collection opening of the vacuum suction cover is arranged towards the laser cutting area.

5. The semi-solid lithium battery multi-tab laser cutting device of claim 1, wherein, The roller conveying assembly further comprises a first tensioning roller group and a second tensioning roller group, wherein the first tensioning roller group and the second tensioning roller group are arranged along the tab conveying path in sequence, and the first tensioning roller group and the second tensioning roller group are used for adjusting the tension of the tab.

6. The semi-solid lithium battery multi-tab laser cutting device of claim 5, wherein, The semi-solid lithium battery multi-tab laser cutting device further comprises a deviation rectifying assembly, wherein the deviation rectifying assembly comprises a deviation rectifying base, a deviation rectifying adjusting plate and a deviation rectifying roller group, the deviation rectifying base is fixedly connected to the machine body, one side of the deviation rectifying adjusting plate is movably connected to the deviation rectifying base, the deviation rectifying roller group is fixedly installed at the other side of the deviation rectifying adjusting plate, the deviation rectifying roller group is located on the tab conveying path, and the deviation rectifying adjusting plate is used for adjusting the position of the tab passing through the deviation rectifying roller group.

7. The semi-solid lithium battery multi-tab laser cutting device of claim 6, wherein, The deviation rectifying base, the deviation rectifying adjusting plate and the deviation rectifying roller group are located between the first tensioning roller group and the second tensioning roller group on the tab conveying path.

8. The semi-solid lithium battery multi-tab laser cutting device of claim 6, wherein, The deviation rectifying adjusting plate is driven by a servo motor.

9. A semi-solid lithium battery multi-tab laser cutting apparatus, characterized by, The semi-solid lithium battery multi-tab laser cutting device according to any one of claims 1-8.

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