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Device for rolling metal lithium strip

A technology of metal lithium and lithium strips, which is applied in the direction of driving devices for metal rolling mills, metal rolling, metal rolling, etc., and can solve problems such as complex manufacturing

Pending Publication Date: 2022-07-19
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Lithium metal is a malleable, viscous and therefore very fragile material, so the fabrication of ribbons of tens of microns is relatively complex

Method used

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  • Device for rolling metal lithium strip
  • Device for rolling metal lithium strip
  • Device for rolling metal lithium strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] exist figure 1 , an apparatus for rolling a lithium thin film (also called a strip) is shown, including a zone ZL for rolling lithium, a zone ZA for supplying lithium upstream of the rolling zone ZL, a zone ZA for rolling lithium Downstream of the zone ZL is a zone ZS where lithium is stored.

[0031] In this application, the upstream-downstream direction should be understood as from the supply area towards the storage area.

[0032] In this application, the terms "lithium thin film" and "metal lithium thin film" refer to thin films made of lithium or lithium alloys including, for example, but not limited to, magnesium and / or aluminum.

[0033] The rolling area comprises at least two rolls 2.1, 2.2 facing each other, the opposite outer surfaces of these rolls being separated by a lithium film of the desired thickness. For example, several pairs of rollers may be successively arranged from upstream to downstream to gradually reduce the thickness of the lithium thin fil...

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Abstract

A device for rolling metallic lithium strips, comprising a rolling zone (ZL) comprising two rollers (2.1, 2.2), a feed zone comprising: means for feeding a lithium strip (FL1) having a first thickness into the rolling zone; means for feeding two films interposed between the lithium strip having a first thickness and the rollers (2.1, 2.2), the storage area comprising means for collecting the lithium strip (FL1) having a second thickness. The lithium strip (FL1) having a second thickness is tensioned and the rollers (20) ensure that each film (FP1, FP2) is separated from the surface of one of the rollers (2.1, 2.2) in a separation region that exceeds a horizontal plane (PH) and is opposite the other roller, the horizontal plane passing through the axis of rotation of the rollers.

Description

technical field [0001] The present invention relates to a device for rolling metallic lithium strips. Background technique [0002] So far, lithium-ion technology can allow energy densities of up to 250Wh / kg, and in the opinion of experts, this technology has made little progress. So-called "all-solid-state" technologies appear to be the future of lithium-ion, especially the use of metallic lithium in the anode. In fact, the mass and volumetric energy density of this material is very high, and if these technologies are developed, it will be able to greatly increase the energy density of rechargeable batteries. [0003] Therefore, one of the main concerns involves mastering the process of making metallic lithium ribbons, which have so far been used extensively in metallic lithium batteries, thereby limiting energy density. With the rolling mill, target thicknesses in the range of several micrometers to tens of micrometers can be achieved. [0004] Lithium metal is a ductil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/40B21B45/02
CPCB21B1/40B21B45/0239B21B2001/383B21B2265/08B21B2265/04B21B2275/05B21B2265/24H01M4/382Y02E60/10B21B3/00H01M4/0435
Inventor 纪尧姆·克劳德C·巴查兹克莱门特·科拉博夫莱昂内尔·布兰克
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES