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A kind of production method and production equipment of lithium strip

A production method and technology for production equipment, applied in the field of lithium strip production methods and production equipment, capable of solving problems such as difficult production of metal lithium strips, tensile deformation, fracture, etc., to achieve the effect of avoiding discoloration of lithium strips and reliable production

Active Publication Date: 2017-03-01
EVE ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The essential performance of lithium metal determines that the lithium metal strip is light and soft, which makes the lithium metal strip extremely prone to stretching, deformation or even fracture during the production process, and the thinness of the lithium metal strip is now required in industrial applications. Higher and higher, so the production of metal lithium belt is very difficult

Method used

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  • A kind of production method and production equipment of lithium strip
  • A kind of production method and production equipment of lithium strip
  • A kind of production method and production equipment of lithium strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as image 3 Shown, a kind of production method of lithium band, comprises the following steps:

[0059] S01, pre-opening the pre-cooling device 17 and the final cooling device 18: opening the pre-cooling device 17 and the final cooling device 18 in advance, so that the pre-cooling device 17 and the final cooling device 18 reach the set temperature required for cooling the battery diaphragm 22;

[0060] S02. Diaphragm unwinding: transport the battery diaphragm 22 into the pre-cooling device 17 that has reached the set temperature.

[0061] S10 , pre-cooling the diaphragm: the temperature of the battery diaphragm 22 is lowered in advance by the pre-cooling device 17 .

[0062] S11. Lithium ingot feeding: put the solid metal lithium ingot into the lithium ingot material cylinder 11;

[0063] S12. Lithium ingot extrusion: Extrude the solid metal lithium ingot into the melting cylinder 12 through the power unit 10 .

[0064] S20. Melting the lithium ingot: the temperat...

Embodiment 2

[0079] The difference between this embodiment and Embodiment 1 is:

[0080] Such as figure 2 Shown, a kind of production equipment of lithium belt, comprises the lithium ingot material cylinder 11 that is used to store metal lithium ingot, and the top of lithium ingot material cylinder 11 is provided with the power unit 10 that is used to extrude described metal lithium ingot, power unit 10 It's a pneumatic cylinder.

[0081] The bottom of the melting cylinder 12 is provided with an extrusion head 13 for extruding lithium fluid, and the middle part of the extrusion head 13 is provided with a rectangular discharge through hole, and one end of the discharge through hole communicates with the melting cylinder 12. The other end of the material through hole communicates with the outside and is located above the battery separator 22 . The outer side of the extrusion head 13 is covered with a heat preservation device 131 for keeping the lithium fluid in a molten state. The heat pr...

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Abstract

The invention discloses a production method of a lithium strip, comprising the following steps: S10, pre-cooling the diaphragm: reducing the temperature of the battery diaphragm in advance through a pre-cooling device; S20, melting lithium ingots: raising the temperature of the metal lithium ingot through a heating device , turning the solid metal lithium ingot into a molten lithium fluid; S30, coating the lithium fluid: coating the molten lithium fluid on the surface of the pre-cooled battery diaphragm; S40, final cooling the diaphragm: The temperature of the battery separator coated with the lithium fluid is lowered again by the final cooling device, so that the lithium fluid is solidified to form a lithium ribbon. At the same time, the invention also discloses a production equipment for making lithium strips by using the above method. By providing a production method and equipment for lithium strips, it replaces the traditional production method of rolling lithium strips, avoiding problems such as discoloration and uncontrollable thickness uniformity of lithium strips during rolling, and achieving simplicity, efficiency and reliability. production of lithium strips.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a production method and production equipment of a lithium strip. Background technique [0002] Lithium, atomic number 3, atomic weight 6.941, is the lightest alkali metal element. In 1817, the Swedish scientist Afve Cong found that the main lithium minerals in nature were spodumene, lepidolite, lithium feldspar and phosphate aluminum when analyzing the lithium feldspar ore. In addition, in human and animal organisms, Lithium can be found in soil and mineral water, cocoa powder, tobacco leaves, and seaweed. [0003] Lithium metal is a silvery white light metal with a melting point of 180.54°C, a boiling point of 1342°C and a density of 0.534g / cm 3 , the hardness is 0.6. Lithium metal is widely used in batteries, glass, ceramics, lubricants, heat transfer media, rocket propellant, vitamin A synthesis and other fields, and has high practical application value. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04H01M10/04
CPCH01M4/0433H01M10/04Y02E60/10Y02P70/50
Inventor 陈平方刘金成刘建华彭爱成
Owner EVE ENERGY CO LTD