Polishing brush for solving edge tearing problem in production of ultra-thin lithium battery electrolytic copper foil

Abstract

The utility model relates to a polishing brush for solving the problem of edge tearing in production of an ultra-thin lithium battery electrolytic copper foil. The polishing brush comprises a polishing brush main body, bevel edges are symmetrically arranged at the two ends of the polishing brush main body; the oblique angle edge is an oblique angle edge with an outward oblique angle direction; and the bevel edge is ground by using a bevel grinding wheel with a required angle. Compared with the prior art, the device has the advantages that the right angle of the cathode roller is not damaged, the edge of the cathode roller is effectively polished and brushed, and the edge tearing problem is solved.

Description

Technical Field

[0001] This utility model relates to the field of ultra-thin lithium-ion electrolytic copper foil production technology, and in particular to a polishing brush that solves the problem of edge tearing in the production of ultra-thin lithium-ion electrolytic copper foil. Background Technology

[0002] Ultra-thin lithium-ion battery electrolytic copper foil generally refers to electrolytic copper foil with a diameter of less than 6μm. During the production of ultra-thin lithium-ion battery electrolytic copper foil, the edges are extremely prone to tearing when peeled from the cathode roller due to its thinness, leading to production interruptions and even serious accidents. This is one of the main challenges in producing ultra-thin lithium-ion battery copper foil. However, lithium battery manufacturers are continuously reducing the thickness of the copper foil to improve battery energy density. Therefore, solving the edge tearing problem is a crucial challenge that must be overcome in the production of electrolytic copper foil.

[0003] In the production process of ultra-thin lithium-ion battery electrolytic copper foil, to solve the problem of edge tearing, such as... Figure 1 and 2 As shown, the traditional method involves cutting a stepped edge on the polishing brush. During the polishing oscillation and rotation, the brush is prevented from striking the right angle of the cathode roller. This ensures the right angle of the cathode roller is not damaged by the high-speed rotation and oscillation of the polishing brush, and prevents the right angle from becoming rounded, thus avoiding large and uneven peeling of the copper foil edges and causing tearing problems. However, as electrolytic copper foil becomes thinner, this method has a problem in actual production: with the increase in the service life of the cathode roller, insufficient pressure and frequency of brushing at the edges lead to severe oxidation. Severe oxidation of the titanium at the cathode roller edges forms titanium oxide, which makes the copper foil brittle, even turning it into powder, and also causing tearing and breakage. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a polishing brush that solves the problem of edge tearing in the production of ultra-thin lithium-ion electrolytic copper foil.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A polishing brush for solving the problem of edge tearing in the production of ultra-thin lithium-ion electrolytic copper foil, the polishing brush comprising a polishing brush body; the polishing brush body having symmetrically arranged beveled edges at both ends; the beveled edges being beveled edges with the beveled angle facing outwards; the beveled edges being beveled edges ground using a beveled grinding wheel with the required angle.

[0007] Furthermore, the polishing brush body is provided with rotating shafts at both ends.

[0008] Furthermore, the polishing brush body is located on the side of a cathode roller; a gap is left between the polishing brush body and the cathode roller for the passage of an extremely thin lithium-ion electrolytic copper foil.

[0009] Further, the polishing brush body is a smooth-surfaced cylindrical roller.

[0010] Compared with the prior art, the polishing brush has the following advantages:

[0011] The polishing brush provided by the utility model is characterized in that the grinding wheel of the grinding and polishing brush is ground to a bevel angle, and then the bevel angle of the grinding wheel is used to grind the edge of the polishing brush body to a bevel edge, so that the cathode roller can be effectively polished without damaging the cathode roller, and the problem of edge tearing caused by the oxidation of the edge of the cathode roller due to the insufficient polishing pressure and frequency of the edge of the cathode roller caused by the existence of the cutting steps in the traditional method is solved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of a traditional polishing brush structure;

[0013] Figure 2 It is an enlarged schematic view of part B of a traditional polishing brush structure;

[0014] Figure 3 It is a schematic view of a polishing brush structure provided by the utility model;

[0015] Figure 4 It is a view of a polishing brush K provided by the utility model;

[0016] Figure 5 It is an enlarged view of part A of a polishing brush provided by the utility model.

[0017] The reference signs in the drawings are as follows:

[0018] 1, polishing brush body; 2, bevel edge; 3, rotating shaft; 4, cathode roller. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] It should be noted that like reference numerals and letters refer to like items in the several views, and once an item is defined in one view, it need not be further defined and explained in subsequent views.

[0022] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] It should be noted that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] Embodiment

[0026] As Figures 3 to 5 shown, a polishing brush for solving the edge tearing problem of ultra-thin lithium battery electrolytic copper foil production, the polishing brush includes a polishing brush body 1, the polishing brush body 1 is a smooth cylindrical roller, the polishing brush body 1 is provided with rotating shafts 3 at both ends, so that the polishing brush body 1 can rotate to complete the polishing task, the polishing brush body 1 is provided with inclined angle edges 2 symmetrically at both ends, the inclined angle edge 2 is an inclined angle edge with the inclined angle direction outward, and the inclined angle edge 2 is an inclined angle edge polished by an inclined angle grinding wheel with a required angle.

[0027] The polishing brush body 1 is located on the side surface of a cathode roller 4, and a spacing is reserved between the polishing brush body 1 and the cathode roller 4 for the passage of ultra-thin lithium battery electrolytic copper foil.

[0028] The principle of the utility model is:

[0029] Firstly, the grinding wheel for grinding and polishing the brush body 1 is ground according to the required angle to form an inclined angle, and then the edge of the brush body 1 is ground by the inclined angle of the grinding wheel to form an inclined angle edge 2 with the inclined angle direction outward, so that the cathode roller 4 can be effectively polished without damaging the cathode roller 4 and the edge of the cathode roller 4 can be effectively polished, and the problem of edge tearing caused by the serious oxidation of the edge of the cathode roller due to the insufficient polishing pressure and frequency of the edge of the cathode roller caused by the existence of the cutting step in the traditional method is effectively solved.

[0030] The preferred embodiments of the utility model are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the utility model. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the utility model shall be within the protection scope defined by the claims.

Claims

1. A polishing brush for solving the problem of tearing edge in the production of ultra-thin lithium battery electrolytic copper foil, characterized in that, The polishing brush comprises a polishing brush body (1); the polishing brush body (1) is symmetrically provided with an inclined angle edge (2) at both ends; the inclined angle edge (2) is an inclined angle edge with the inclined angle direction outward; the inclined angle edge (2) is an inclined angle edge polished by an inclined angle grinding wheel with a required angle.

2. The polishing brush for solving the tearing edge problem in the production of extremely thin lithium battery electrolytic copper foil according to claim 1, characterized in that, The polishing brush body (1) is provided with a rotating shaft (3) at both ends.

3. The polishing brush for solving the tearing edge problem in the production of extremely thin lithium battery electrolytic copper foil according to claim 1, characterized in that, The polishing brush body (1) is located at the side of a cathode roller (4); a gap is reserved between the polishing brush body (1) and the cathode roller (4) for the passage of an extremely thin lithium battery electrolytic copper foil.

4. The polishing brush for solving the tearing edge problem in the production of extremely thin lithium battery electrolytic copper foil according to claim 1, characterized in that, The polishing brush body (1) is a smooth cylindrical roller.

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