Cutting structure of metal lithium

Abstract

The utility model provides a lithium metal cutting structure. The lithium metal cutting structure comprises a lithium strip, an upper diaphragm, a lower diaphragm and a cutting device, an upper diaphragm covers the upper surface of the lithium strip, a lower diaphragm is rolled on the lower surface of the lithium strip, anti-sticking coatings are arranged between the upper diaphragm and the lithium strip and between the lower diaphragm and the lithium strip, and the cutting device is located above the upper diaphragm and used for uniformly slitting the lithium strip. The cutting device does not cut the upper diaphragm and the lower diaphragm; the characteristics of toughness of the diaphragm and softness of metal lithium are utilized, the upper surface and the lower surface of the diaphragm are coated with the lithium strips, the metal lithium strips are cut off after cutting by the cutter, the diaphragm is not broken, and the cutter is not in contact with the lithium strips, so that the problem caused by cutter sticking in the metal lithium cutting process is effectively solved, and the cutting efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium strip cutting, in particular to a cutting structure for metal lithium. Background Art

[0002] In the current solid-state battery preparation process, metal lithium alloy is used as the negative electrode material. In the process of cutting and preparing metal lithium, cutting tools (such as tungsten steel cutters or non-metallic material cutters) are usually used to cut metal lithium. However, because metal lithium is relatively soft, there is a situation where the tool remains after cutting metal lithium. The residual metal lithium debris is extremely difficult to remove and is easy to stick to the tool, making the metal lithium prone to burrs, uneven edges and other problems during the cutting process, and also causing blade wear and adhesion; this not only affects the efficiency of metal lithium cutting and preparation, but may also cause safety issues.

[0003] To this end, we propose a metal lithium cutting structure to solve the problem of metal lithium cutting residue. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art. In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cutting structure for metallic lithium comprises a lithium strip, an upper diaphragm, a lower diaphragm and a cutting device; the upper surface of the lithium strip is covered with the upper diaphragm, the lower surface of the lithium strip is rolled with the lower diaphragm, an anti-sticking coating is arranged between the upper diaphragm and the lower diaphragm and the lithium strip, the cutting device is located above the upper diaphragm, the cutting device is used to evenly cut the lithium strip, and the cutting device does not cut the upper diaphragm and the lower diaphragm; the lithium strip is coated with the upper and lower surfaces of the diaphragm, and after being cut by a cutter, the metallic lithium strip is cut off, while the diaphragm is not broken, and the cutter does not contact the lithium strip, thereby effectively solving the problem caused by the sticking of the cutter during the metallic lithium cutting process, and improving the cutting efficiency and product quality.

[0006] Further preferably, the cutting device comprises a cutter and a power device, and the power device drives the cutter to cut.

[0007] Further preferably, the power device includes a fixing frame and a lifting cylinder installed on the fixing frame.

[0008] Further preferably, the cutting blade of the cutter is arc-shaped.

[0009] Further preferably, one end of the lithium belt and the upper diaphragm is wound and installed on the upper driven roller, and the other end of the upper diaphragm is wound and installed on the upper active roller after passing through several adjustment rollers.

[0010] Further preferably, one end of the lower diaphragm is wound and installed on the lower driven roller, and the other end of the lower diaphragm is wound and installed on the lower active roller after passing through several adjustment rollers.

[0011] Further preferably, the upper active roller and the lower active roller drive the lithium belt, the upper diaphragm and the lower diaphragm to move forward.

[0012] Further preferably, a support platform is provided at the bottom of the lower diaphragm, and the support platform is located directly below the support platform.

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

[0014] The utility model utilizes the toughness of the diaphragm and the softness of metallic lithium, and covers the lithium strip on the upper and lower surfaces of the diaphragm. After the cutter cuts, the metallic lithium strip is cut, while the diaphragm is not broken, and the cutter and the lithium strip do not contact, which effectively solves the problem caused by the sticking knife during the cutting of metallic lithium, and improves the cutting efficiency and product quality. At the same time, the diaphragm also has good protective performance, which can prevent the metallic lithium from being oxidized during the cutting process. In addition, the diaphragm also has excellent insulation performance, which can prevent safety hazards such as fire caused by static electricity during the cutting process. Therefore, the utility model has high practicality and broad application prospects, which can not only improve the efficiency and quality of the cutting and preparation of metallic lithium, but also reduce production costs and improve production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] In the figure: lithium belt 1, upper diaphragm 2, lower diaphragm 3, upper driven roller 4, upper active roller 5, lower driven roller 6, lower active roller 7, support platform 8. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Reference Figure 1 A cutting structure for metallic lithium comprises a lithium strip 1, an upper diaphragm 2, a lower diaphragm 3 and a cutting device 9; the upper surface of the lithium strip 1 is covered with an upper diaphragm 2, the lower surface of the lithium strip 1 is rolled with a lower diaphragm 3, and an anti-sticking coating is arranged between the upper diaphragm 2 and the lower diaphragm 3 and the lithium strip 1; the cutting device 9 is located above the upper diaphragm 2, and the cutting device 9 is used to evenly cut the lithium strip 1, and the cutting device 9 does not cut the upper diaphragm 2 and the lower diaphragm 3.

[0019] In some embodiments: the upper diaphragm 2 and the lower diaphragm 3 are PET diaphragms, the thickness of the PET diaphragm is 10μm-100μm, the PET diaphragm is tough, and the toughness of the diaphragm and the softness of metallic lithium are utilized to coat the lithium tape on the upper and lower surfaces of the diaphragm. After the cutter cuts, the metallic lithium tape is cut off, but the diaphragm is not broken, and the cutter does not contact the lithium tape, which effectively solves the problem caused by the sticking knife during the cutting of metallic lithium, and improves the cutting efficiency and product quality.

[0020] The cutting device 9 includes a cutter and a power device, wherein the power device pushes the cutter to cut downward; the power device includes a fixing frame and a lifting cylinder installed on the fixing frame.

[0021] In some embodiments, the power device is a lifting cylinder, which pushes the cutter to cut intermittently to evenly cut the lithium strip 1.

[0022] The cutting blade of the cutter is arc-shaped.

[0023] In some embodiments: the blade of the cutter is arc-shaped, and the blade is passivated. Then, by utilizing the toughness of the diaphragm, after the cutter cuts, the cutter drives the diaphragm downward to squeeze and separate the metal lithium ribbon. During the whole process, the cutter does not contact the lithium ribbon, the metal lithium ribbon is cut off, and the diaphragm is not broken, which effectively solves the problem caused by knife sticking during the cutting of metal lithium, and improves cutting efficiency and product quality.

[0024] One end of the lithium belt 1 and the upper diaphragm 2 are wound and installed on the upper driven roller 4, and the other end of the upper diaphragm 2 is wound and installed on the upper active roller 5 after passing through several adjusting rollers; one end of the lower diaphragm 3 is wound and installed on the lower driven roller 6, and the other end of the lower diaphragm 3 is wound and installed on the lower active roller 7 after passing through several adjusting rollers; the upper active roller 5 and the lower active roller 7 drive the lithium belt 1, the upper diaphragm 2 and the lower diaphragm 3 to move forward.

[0025] In some embodiments: the upper active roller 5 and the lower active roller 7 drive the lithium ribbon 1, the upper diaphragm 2 and the lower diaphragm 3 to move forward at a uniform speed, and the middle several adjusting rollers press the upper diaphragm 2 and the lower diaphragm 3 to fit the upper and lower surfaces of the lithium ribbon 1. When the upper active roller 5 and the lower active roller 7 drive the upper diaphragm 2 and the lower diaphragm 3 to move forward, the lithium ribbon 1 sandwiched between the diaphragms will move forward synchronously. After the lithium ribbon 1 is cut, the upper diaphragm 2 and the lower diaphragm 3 are separated from the surface of the lithium ribbon 1, and then the diaphragms are recycled and reused by the upper active roller 5 and the lower active roller 7.

[0026] A support platform 8 is provided at the bottom of the lower diaphragm 3 , and the support platform 8 is located directly below the support platform 8 .

[0027] In some embodiments: during the cutting process, the cutter presses the support platform 8 downwards through the cutter to separate the lithium ribbon 1 between the cutter and the support platform 8, thereby achieving the function that the diaphragm is continuous while the metal lithium ribbon is cut.

[0028] The utility model utilizes the toughness of the diaphragm and the softness of metallic lithium, and covers the lithium strip on the upper and lower surfaces of the diaphragm. After the cutter cuts, the metallic lithium strip is cut, while the diaphragm is not broken, and the cutter and the lithium strip do not contact, which effectively solves the problem caused by the sticking knife during the cutting of metallic lithium, and improves the cutting efficiency and product quality. At the same time, the diaphragm also has good protective performance, which can prevent the metallic lithium from being oxidized during the cutting process. In addition, the diaphragm also has excellent insulation performance, which can prevent safety hazards such as fire caused by static electricity during the cutting process. Therefore, the utility model has high practicality and broad application prospects, which can not only improve the efficiency and quality of the cutting and preparation of metallic lithium, but also reduce production costs and improve production.

Claims

1. A cutting structure of metallic lithium, characterized in that: It includes a lithium belt, an upper diaphragm, a lower diaphragm and a cutting device; the upper surface of the lithium belt is covered with an upper diaphragm, the lower surface of the lithium belt is rolled with a lower diaphragm, and an anti-stick coating is arranged between the upper diaphragm, the lower diaphragm and the lithium belt. The cutting device is located above the upper diaphragm, and the cutting device is used to cut the lithium belt evenly, and the cutting device does not cut the upper diaphragm and the lower diaphragm.

2. A cutting structure of metallic lithium according to claim 1, characterized in that: The cutting device comprises a cutting knife and a power device, and the power device drives the cutting knife to cut downward.

3. A cutting structure of metallic lithium according to claim 2, characterized in that: The power device comprises a fixing frame and a lifting cylinder installed on the fixing frame.

4. A cutting structure of metallic lithium according to claim 2, characterized in that: The cutting blade of the cutter is arc-shaped.

5. The cutting structure of metal lithium according to claim 1, characterized in that: One end of the lithium belt and the upper diaphragm is wound and installed on the upper driven roller, and the other end of the upper diaphragm is wound and installed on the upper active roller after passing through several adjusting rollers.

6. A cutting structure of metallic lithium according to claim 5, characterized in that: One end of the lower diaphragm is wound and installed on the lower driven roller, and the other end of the lower diaphragm is wound and installed on the lower active roller after passing through several adjusting rollers.

7. A cutting structure of metallic lithium according to claim 6, characterized in that: The upper active roller and the lower active roller drive the lithium belt, the upper diaphragm and the lower diaphragm to move forward.

8. The cutting structure of metal lithium according to claim 1, characterized in that: A support platform is provided at the bottom of the lower diaphragm, and the support platform is located directly below the support platform.

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