Production method and production equipment of ultrathin lithium belt

A technology for production equipment and production methods, which is applied in the field of production methods and production equipment for ultra-thin lithium strips, can solve problems such as difficulty in producing metal lithium strips, tensile deformation, fracture, etc., and achieve the goal of avoiding discoloration and reliable production of lithium strips Effect

Active Publication Date: 2015-02-04
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 frac

Method used

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  • Production method and production equipment of ultrathin lithium belt
  • Production method and production equipment of ultrathin lithium belt
  • Production method and production equipment of ultrathin lithium belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as image 3Shown, a kind of production method of ultra-thin lithium ribbon, 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...

Embodiment 2

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

[0080] Such as figure 2 Shown, a kind of production equipment of ultra-thin lithium belt, comprises the lithium ingot material cylinder 11 that is used to store metal lithium ingot, 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 Device 10 is 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 ...

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Abstract

The invention discloses a production method of an ultrathin lithium belt. The production method comprises the following steps: S10, diaphragm pre-cooling: reducing the temperature of a cell diaphragm in advance by a pre-cooling device; S20, lithium ingot melting: raising the temperature of a metal lithium ingot by a heating device so as to convert the solid metal lithium into melt lithium liquid; S30, lithium liquid coating: coating the melt lithium liquid over the surface of the pre-cooled cell diaphragm; S40, diaphragm final cooling: reducing the temperature of the cell diaphragm, which has been coated by the lithium liquid, by a final cooling device so as to solidify the lithium liquid to form a lithium belt. The invention further discloses production equipment using the preparation method mentioned above to produce ultrathin lithium belts. The provided production method and production equipment of ultrathin lithium belt replace the conventional ultrathin lithium belt production mode, which produces ultrathin lithium belt through rolling and pressing, thus solve the problems of color fading and uncontrollable thickness uniformity of ultrathin lithium belt during the rolling and pressing process, and can produce ultrathin lithium belts simply, high efficiently, and reliably.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a production method and production equipment of an ultra-thin 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 val...

Claims

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Application Information

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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
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