Laser cutting device

Abstract

The utility model discloses a laser cutting device which comprises a cutting assembly, an insulating layer supply assembly and an insulating layer attaching assembly, and the cutting assembly is used for conducting laser cutting on a battery pole piece so that a pole lug can be formed on the battery pole piece; the insulating layer supply assembly is arranged above the upper surface and / or below the lower surface of the battery pole piece and is used for providing an insulating layer; the insulating layer attaching assembly is used for attaching the insulating layer provided by the insulating layer supply assembly to the battery pole piece; wherein the battery pole piece and the insulating layer enter the insulating layer attaching assembly together, and the insulating layer attaching assembly attaches the insulating layer to an area, used for forming the tab, on the battery pole piece. According to the laser cutting device provided by the utility model, the strength of the root part of the pole lug is improved, the phenomena of tearing and belt breakage of the pole piece in the subsequent process are avoided, and burrs are prevented from being generated in the cutting process.

Description

Technical Field

[0001] The present application relates to the technical field of battery pole piece processing, and in particular to a laser cutting device. Background Art

[0002] During the production process of new energy batteries, the positive and negative electrode strips need to be cut to meet specific process requirements. The existing cutting process uses laser cutting. During the laser cutting process, the electrode strips form a structure with a specific shape called a pole ear. Since the positive and negative electrode sheets are made of aluminum foil and copper foil, which are soft in texture, after the pole ears are cut, the edges of the strips change due to tension, and the roots of the pole ears are prone to tearing. This is especially obvious when passing through the rollers of the equipment. In severe cases, it will cause the pole pieces to break. At the same time, during the laser cutting process, burrs will inevitably be generated around the pole ears due to the cutting process. When the battery is subsequently manufactured, the burrs will be too large and will pierce the battery poles, causing the battery to short-circuit.

[0003] The existing technology coats the surface of the positive electrode aluminum foil with a ceramic edge to reduce burrs, but two materials need to be coated during the coating process, and the coating and baking process requirements are relatively high. Therefore, it is necessary to propose a new laser cutting device to improve the strength of the root of the pole ear, avoid pole piece tearing and tape breakage, and avoid burrs during the cutting process. Utility Model Content

[0004] The utility model provides a laser cutting device, which is used for laser cutting of battery pole pieces, forming pole ears on the battery pole pieces, and processing an insulating layer in the area on the battery pole piece used for forming the pole ears, so as to improve the strength of the pole ear root, avoid the pole piece tearing and belt breaking, and avoid burrs in the cutting process.

[0005] The laser cutting device of an embodiment of the utility model includes: a cutting component, which is used to perform laser cutting on a battery electrode sheet to form a pole lug on the battery electrode sheet; an insulating layer supply component, which is arranged above the upper surface and / or below the lower surface of the battery electrode sheet and is used to provide an insulating layer; an insulating layer bonding component, which is used to bond the insulating layer provided by the insulating layer supply component to the battery electrode sheet; wherein the battery electrode sheet and the insulating layer enter the insulating layer bonding component together, and the insulating layer bonding component bonds the insulating layer to the area on the battery electrode sheet for forming the pole lug.

[0006] According to the aforementioned embodiment of the utility model, the insulation layer supply assembly includes: an insulation layer coil, the insulation layer coil is aligned with the area on the battery electrode sheet where the electrode ear is formed; and a first roller, the first roller is used to transfer the insulation layer into the insulation layer bonding assembly.

[0007] According to any of the foregoing embodiments of the present invention, the insulating layer roll includes two rolls, which are respectively aligned with the area on the first edge of the battery electrode sheet forming the pole lug and the area on the second edge of the battery electrode sheet forming the pole lug.

[0008] According to any of the foregoing embodiments of the utility model, the insulating layer bonding assembly includes: an upper pressing roller and a lower pressing roller, the upper pressing roller presses the insulating layer and the battery pole piece together onto the lower pressing roller, so that the insulating layer is bonded to the battery pole piece.

[0009] According to any of the aforementioned embodiments of the utility model, a heating element is provided inside the upper pressing roller and / or the lower pressing roller, and the heating element heats the upper pressing roller and / or the lower pressing roller so that the insulating layer is adhered to the battery electrode.

[0010] According to any of the aforementioned embodiments of the utility model, the cutting device also includes: a first correcting component, which is arranged upstream of the cutting component and is used to adjust the position of the battery electrode; a second correcting component, which is arranged upstream of the insulating layer bonding component and is used to adjust the position of the battery electrode.

[0011] According to any of the aforementioned embodiments of the utility model, rollers are provided upstream and downstream of the cutting assembly, the insulating layer laminating assembly, the first deviation correcting assembly and the second deviation correcting assembly, and the rollers are used to transfer the battery pole pieces.

[0012] According to any of the foregoing embodiments of the present utility model, the cutting assembly is arranged upstream or downstream of the insulation layer bonding assembly.

[0013] According to any of the foregoing embodiments of the present utility model, the insulating layer includes an insulating tape.

[0014] The laser cutting device provided by the utility model includes a cutting component, an insulating layer supply component and an insulating layer bonding component. The cutting component is used to perform laser cutting on the battery pole piece to form a pole ear on the battery pole piece; the insulating layer supply component is arranged above the upper surface of the battery pole piece and / or below the lower surface, and is used to provide an insulating layer; the insulating layer bonding component is used to bond the insulating layer provided by the insulating layer supply component to the battery pole piece; wherein the battery pole piece and the insulating layer enter the insulating layer bonding component together, and the insulating layer bonding component bonds the insulating layer to the area on the battery pole piece for forming the pole ear. The laser cutting device provided by the utility model improves the strength of the pole ear root, avoids the phenomenon of pole piece tearing and belt breaking in the subsequent process, and avoids the generation of burrs during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of a laser cutting device according to an embodiment of the utility model;

[0017] Figure 2 This is a schematic structural diagram of a laser cutting device according to an embodiment of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a laser cutting device according to an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of a battery pole piece processed by a laser cutting device according to an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of a battery pole piece processed by a laser cutting device according to an embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of a battery electrode processed by a laser cutting device according to an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 10-battery pole piece; 11-ear;

[0024] 100-cutting assembly; 200-insulating layer supply assembly; 210-insulating layer coil; 220-first roller;

[0025] 300-insulation layer bonding assembly;

[0026] 400-first deviation-correcting component;

[0027] 500-The second deviation-correcting component.

[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their 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 addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0032] See also Figure 1 to Figure 6 , Figure 1 This is a schematic structural diagram of a laser cutting device according to an embodiment of the utility model; Figure 2 This is a schematic structural diagram of a laser cutting device according to an embodiment of the utility model; Figure 3 This is a schematic structural diagram of a laser cutting device according to an embodiment of the utility model; Figure 4 A schematic diagram of a battery pole piece processed by a laser cutting device according to an embodiment of the utility model; Figure 5 A schematic diagram of a battery pole piece processed by a laser cutting device according to an embodiment of the utility model; Figure 6The figure is a schematic diagram of a battery pole piece processed by a laser cutting device according to an embodiment of the utility model. The laser cutting device according to the embodiment of the utility model comprises a cutting assembly 100, an insulating layer supply assembly 200 and an insulating layer bonding assembly 300. The cutting assembly 100 is used to perform laser cutting on a battery pole piece 10 to form a pole lug 11 on the battery pole piece 10. The insulating layer supply assembly 200 is arranged above the upper surface and / or below the lower surface of the battery pole piece 10. The insulating layer supply assembly 200 is used to provide an insulating layer. The insulating layer bonding assembly 300 is used to bond the insulating layer provided by the insulating layer supply assembly 200 to the battery pole piece 10. The battery pole piece 10 and the insulating layer enter the insulating layer bonding assembly 300 together. The insulating layer bonding assembly 300 bonds the insulating layer to the area on the battery pole piece 10 for forming the pole lug 11.

[0033] In the embodiment of the utility model, the insulating layer supply assembly 200 is arranged above the upper surface and below the lower surface of the battery pole piece 10. In other embodiments, the insulating layer supply assembly 200 can be arranged only above the upper surface or below the lower surface of the battery pole piece 10. By laminating the insulating layer on the area for forming the pole ear 11 on the battery pole piece 10, the strength of the root of the pole ear 11 can be improved, and the battery pole piece 10 can be prevented from being torn or even broken in the subsequent processing technology. At the same time, the burrs generated during the cutting process can be reduced, and the burrs can be prevented from piercing the battery pole piece 10 to cause a short circuit problem, replacing the processing technology of coating the ceramic edge on the battery pole piece 10 in the prior art.

[0034] In some embodiments, in the laser cutting device of the present invention, the insulating layer supply assembly 200 includes an insulating layer coil 210 and a first roller 220. The insulating layer coil 210 is aligned with the area on the battery electrode 10 where the pole lug 11 is formed, so that when the insulating layer coil 210 is unrolled, it can be accurately attached to the area on the battery electrode 10 for forming the pole lug 11. The first roller 220 is used to transport the insulating layer into the insulating layer attaching assembly 300.

[0035] In some embodiments, the insulating layer roll 210 of the laser cutting device of the present invention includes two rolls, which are respectively aligned with the area on the first edge of the battery electrode 10 forming the pole ear 11 and the area on the second edge of the battery electrode 10 forming the pole ear 11.

[0036] In some embodiments, the insulating layer bonding assembly 300 of the laser cutting device of the present invention includes an upper pressing roller and an lower pressing roller, and the upper pressing roller presses the insulating layer and the battery electrode 10 together on the lower pressing roller so that the insulating layer is bonded to the battery electrode 10.

[0037] In the above embodiment, the insulating layer and the battery electrode 10 are bonded together by extrusion. In other embodiments, other bonding methods may be used, which are not specifically limited here.

[0038] In some embodiments, a heating element is disposed inside the upper pressing roller and / or the lower pressing roller of the laser cutting device of the present invention, and the heating element heats the upper pressing roller and / or the lower pressing roller so that the insulating layer is attached to the battery electrode 10 .

[0039] In the above embodiment, a heating element is provided inside the upper pressing roller and / or the lower pressing roller to heat the upper pressing roller and / or the lower pressing roller, so that the insulating layer is bonded to the battery electrode 10 by hot pressing.

[0040] In some embodiments, the heating element of the laser cutting device of the utility model includes a resistance wire. In other embodiments, other heating elements can also be used to heat the upper pressing roller and / or the lower pressing roller, which is not specifically limited here.

[0041] In some embodiments, the laser cutting device of the utility model further includes a first deviation correction component 400 and a second deviation correction component 500. The first deviation correction component 400 is arranged upstream of the cutting component 100, and is used to adjust the position of the battery pole piece 10 before the cutting component 100 performs laser cutting on the battery pole piece 10, so that the pole lug 11 is cut accurately. The second deviation correction component 500 is arranged upstream of the insulation layer bonding component 300, and is used to adjust the position of the battery pole piece 10 before the insulation layer bonding component 300 bonds the insulation layer to the battery pole piece 10, so as to ensure that the insulation layer bonding position is accurate.

[0042] In some embodiments, the cutting assembly 100, the insulating layer laminating assembly 300, the first correcting assembly 400 and the second correcting assembly 500 in the laser cutting device of the present invention are provided with rollers upstream and downstream for transmitting the battery electrode 10 along a preset path.

[0043] In some embodiments, the cutting assembly 100 is disposed upstream or downstream of the insulation layer attaching assembly 300;

[0044] The laser cutting device of the utility model can first cut the battery pole piece 10 and then attach the insulating layer, or first attach the insulating layer and then cut the battery pole piece 10. The insulating layer can cover the battery pole piece 10 to prevent burrs from piercing the battery pole piece 10, eliminate the ceramic edge process, reduce production difficulty, and improve production efficiency.

[0045] In some embodiments, the insulating layer in the laser cutting device of the present invention includes insulating tape.

[0046] In the above embodiment, by adhering the insulating tape to the area on the battery pole piece 10 for forming the pole ear 11, the strength of the root of the pole ear 11 on the battery pole piece 10 is improved, and the occurrence of tearing or even tape breakage in the subsequent processing technology is avoided. At the same time, the insulating tape covers the battery pole piece 10 to prevent burrs from piercing the battery pole piece 10, thereby eliminating the ceramic edge processing process, reducing the production difficulty, and improving the production efficiency.

[0047] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made under the concept of the present application using the contents of the present application specification and drawings, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A laser cutting device, characterized in that: include: A cutting assembly, the cutting assembly is used to perform laser cutting on the battery pole piece to form a pole ear on the battery pole piece; An insulating layer supply assembly, the insulating layer supply assembly being arranged above the upper surface and / or below the lower surface of the battery electrode sheet and being used for providing an insulating layer; An insulation layer laminating assembly, the insulation layer laminating assembly is used to laminate the insulation layer provided by the insulation layer supply assembly onto the battery electrode sheet; The battery pole piece and the insulating layer enter the insulating layer bonding assembly together, and the insulating layer bonding assembly bonds the insulating layer to the battery pole piece in the area for forming the pole ear.

2. The laser cutting device according to claim 1, characterized in that: The insulation layer supply assembly comprises: An insulating layer coil is arranged to be aligned with a region on the battery electrode sheet where the electrode lug is formed; A first passing roller is used to transmit the insulating layer into the insulating layer bonding assembly.

3. The laser cutting device according to claim 2, characterized in that: The insulating layer roll includes two rolls, which are respectively aligned with the area on the first edge of the battery electrode sheet forming the electrode ear and the area on the second edge of the battery electrode sheet forming the electrode ear.

4. The laser cutting device according to claim 1, characterized in that: The insulating layer laminating assembly comprises: An upper pressing roller and a lower pressing roller, wherein the upper pressing roller presses the insulating layer and the battery pole piece together onto the lower pressing roller, so that the insulating layer is attached to the battery pole piece.

5. The laser cutting device according to claim 4, characterized in that: A heating element is arranged inside the upper pressing roller and / or the lower pressing roller, and the heating element heats the upper pressing roller and / or the lower pressing roller so that the insulating layer is attached to the battery electrode sheet.

6. The laser cutting device according to claim 1, characterized in that: The cutting device also includes: A first deviation-correcting component, which is disposed upstream of the cutting component and is used to adjust the position of the battery electrode sheet; A second deviation-correcting component is disposed upstream of the insulating layer laminating component and is used for adjusting the position of the battery electrode.

7. The laser cutting device according to claim 1, characterized in that: The cutting component is arranged upstream or downstream of the insulation layer bonding component.

8. The laser cutting device according to claim 1, characterized in that: The insulating layer includes an insulating tape.

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