Ceramic roller for lithium strip calendaring forming

Abstract

The utility model relates to a ceramic roller for lithium strip calendaring forming, which comprises a ceramic roller and a metal shaft, and the surface of the metal shaft is covered with a protective layer. The metal shaft is provided with two assembling sections and a bonding section connected with the two assembling sections, and protruding structures are formed on the outer surface of the bonding section in the length direction of the bonding section and evenly distributed in the circumferential direction; glue hiding grooves corresponding to the protruding structures are formed in the inner surface of the ceramic roller, the inner surface of the ceramic roller is covered with an adhesive layer, and the glue hiding grooves are filled with the adhesive layer; the ceramic roller is arranged on the outer surface of the bonding section in a covering mode, and the protruding structures extend into the glue hiding grooves and are connected with the adhesive layer in a bonding mode. The device has the advantages of being simple in structure, good in structural stability, capable of improving the working efficiency of the rolling equipment and the like.

Description

Technical Field

[0001] The utility model relates to a ceramic roller, in particular to a ceramic roller for lithium strip calendering forming. Background Art

[0002] With the rapid development of new energy technologies, people's demand for the energy density of high specific energy energy storage devices is increasing day by day. As a negative electrode material and prelithiation material, lithium metal can greatly improve the energy density of existing lithium-ion batteries. However, lithium metal has low strength and high viscosity, making processing extremely difficult and resulting in low production efficiency. Existing rolling processing equipment using conventional chrome-plated steel rollers is extremely likely to cause adhesion between lithium strip materials and the rollers, and cannot meet the production and processing of high-precision and ultra-thin lithium strips.

[0003] Therefore, in order to solve the adhesion between lithium strip materials and the rollers to improve the production efficiency of lithium metal, there is an urgent need for a roller with a simple structure and good stability to solve the above problems. Summary of the Utility Model

[0004] The utility model aims to provide a technical solution to solve the above problems in order to overcome the above deficiencies.

[0005] A ceramic roller for lithium strip calendering forming includes a ceramic roller barrel and a metal shaft. Among them, a protective layer covers the surface of the metal shaft; the metal shaft has two assembly sections and a bonding section connecting the two assembly sections. A convex structure is formed on the outer surface of the bonding section along its length, and the convex structures are evenly distributed in a circumferential manner; a glue storage groove corresponding to the convex structure is formed on the inner surface of the ceramic roller barrel. A glue layer covers the inner surface of the ceramic roller barrel, and the glue layer fills the glue storage groove; the ceramic roller barrel is arranged on the outer surface of the bonding section, the convex structure extends into the glue storage groove, and is adhesively connected to the glue layer.

[0006] Preferably, the assembly section includes a bearing assembly. The bearing assembly is installed on the calendering equipment, and both ends of the metal shaft are rotatably connected to the calendering equipment through the bearing assembly.

[0007] Preferably, the material of the protective layer is nickel oxide, and the nickel oxide is formed by spraying.

[0008] Preferably, the glue layer is epoxy resin glue.

[0009] Preferably, the ceramic roller barrel is formed on the outer surface of the bonding section of the metal shaft by a plasma spraying process.

[0010] Preferably, the protective layer is nickel oxide sprayed on the surface of the metal shaft.

[0011] Preferably, the thickness of the ceramic roller barrel is 1-2 cm.

[0012] Preferably, the thickness of the adhesive layer is 1 mm.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The ceramic roller of the present application has a simple structure. By adding a glue storage groove on the inner surface, the bonding area with the metal shaft is increased, and a high-strength metal-ceramic structure interface layer is formed between the inner surface of the ceramic roller and the outer surface of the metal shaft, improving the stability of the ceramic roller structure and also improving the working efficiency of the calendaring equipment.

[0015] 2. The surface of the metal shaft is sprayed with wear-resistant and corrosion-resistant nickel oxide as a protective layer, further improving the durability of the ceramic roller and extending its service life.

[0016] 3. The outer surface of the ceramic roller of the present application is smooth, meeting the requirement that the Ra value is less than 3.2 μm in lithium strip processing. Moreover, the thickness of the ceramic roller is 1 - 2 cm, and the thickness of the adhesive layer is 1 mm. The structure is reasonable and does not adhere to the lithium strip material, improving the working efficiency.

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is the overall structural schematic diagram of a ceramic roller for lithium strip calendering forming of the present utility model;

[0020] Figure 2 is one of the sectional views of a ceramic roller for lithium strip calendering forming of the present utility model;

[0021] Figure 3 is the second sectional view of a ceramic roller for lithium strip calendering forming in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figure 1 , and in combination with Figure 2 and Figure 3 In the embodiments of the present utility model, a ceramic roller for lithium strip calendering forming includes a ceramic roller barrel 1 and a metal shaft 2. Among them, the surface of the metal shaft 2 is covered with a protective layer; the metal shaft 2 has two assembly sections 21 and a bonding section 22 connecting the two assembly sections 21. A raised structure 21 is formed on the outer surface of the bonding section 22 along its length, and the raised structures 21 are evenly distributed in a circle; a glue storage groove 11 corresponding to the raised structure 21 is formed on the inner surface of the ceramic roller barrel 1. The inner surface of the ceramic roller barrel 1 is covered with an adhesive layer 22, and the adhesive layer 22 fills the glue storage groove 11; the ceramic roller is provided on the outer surface of the bonding section 22, the raised structure 21 extends into the glue storage groove 11, and is adhesively connected to the adhesive layer 22.

[0024] Further, the assembly section 21 includes a bearing assembly 3. The bearing assembly 3 is installed on the calendering equipment, and both ends of the metal shaft 2 are rotatably connected to the calendering equipment through the bearing assembly 3.

[0025] Further, the material of the protective layer is nickel oxide, and the nickel oxide is formed by spraying.

[0026] Further, the adhesive layer 22 is epoxy resin glue.

[0027] Further, the ceramic roller barrel 1 is formed on the outer surface of the bonding section 22 of the metal shaft 2 by a plasma spraying process.

[0028] Further, the protective layer is nickel oxide sprayed on the surface of the metal shaft 2.

[0029] Further, the thickness of the ceramic roller barrel 1 is 1-2 cm.

[0030] Further, the thickness of the adhesive layer 22 is 1 mm.

[0031] When the ceramic roller is used for the calendering of lithium strips, its smooth surface, high hardness, abrasion resistance, and non-sticking properties can effectively ensure the evenness, impurity-free, and non-sticking effects of the lithium strips. In the design solution of this application, the structural stability of the ceramic roller is better. A glue storage groove 11 is added to the inner surface of the ceramic roller to increase the bonding area with the metal shaft 2, ensuring that the ceramic roller barrel 1 is not easily detached. Moreover, combined with the metal shaft 2 sprayed with nickel oxide as a protective layer, it can extend the overall service life of the ceramic roller, effectively control the production cost of lithium batteries while improving the working efficiency of the calendering equipment.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims within the present utility model.

Claims

1. A ceramic roller for lithium strip rolling forming, comprising a ceramic roller and a metal shaft, characterized in that: The surface of the metal shaft is covered with a protective layer; the metal shaft has two assembly sections and a bonding section connecting the two assembly sections, the outer surface of the bonding section is formed with a protrusion structure along its length, and the protrusion structure is evenly distributed on the circumference; the inner surface of the ceramic roller is formed with a glue storage groove corresponding to the protrusion structure, the inner surface of the ceramic roller is covered with an adhesive layer, and the adhesive layer fills the glue storage groove; the ceramic roller is arranged on the outer surface of the bonding section, the protrusion structure extends into the glue storage groove, and is bonded to the adhesive layer.

2. A ceramic roller for lithium strip rolling forming according to claim 1, characterized in that: The assembly section comprises a bearing assembly, which is mounted on the calendering device, and two ends of the metal shaft are rotatably connected to the calendering device through the bearing assembly.

3. A ceramic roller for lithium strip rolling forming according to claim 1, characterized in that: The material of the protective layer is nickel oxide, and the nickel oxide is formed by spraying.

4. A ceramic roller for lithium strip calendering according to claim 1, characterized in that: The adhesive layer is epoxy resin adhesive.

5. A ceramic roller for lithium strip rolling forming according to claim 1, characterized in that: The ceramic roller is formed on the outer surface of the bonding section of the metal shaft by using a plasma spraying process.

6. A ceramic roller for lithium strip rolling forming according to claim 4, characterized in that: The protective layer is nickel oxide sprayed on the surface of the metal shaft.

7. A ceramic roller for lithium strip rolling forming according to claim 1, characterized in that: The thickness of the ceramic roller is 1-2 cm.

8. A ceramic roller for lithium strip calendering according to claim 1, characterized in that: The thickness of the adhesive layer is 1 mm.

Images