Process and apparatus for manufacturing lithium sheet

Details Process and apparatus for manufacturing lithium sheet Process and apparatus for manufacturing lithium sheet

B - Operations, Transporting

21

C

B21C 23/06 (2006.01) B21C 25/02 (2006.01) B21C 25/08 (2006.01) H01M 4/02 (2006.01) H01M 4/04 (2006.01)

Patent

CA 2489891

A method of manufacturing lithium or lithium alloy anodes for electrochemical cells by an extrusion process wherein a lithium or lithium alloy ingot is formed into a thin sheet. The method is adapted to extrude thin sheet having a width exceeding the diameter of the lithium or lithium alloy ingot and enables the extrusion of lithium or lithium alloy thin sheets with more than one lithium or lithium alloy ingot. The invention also provides a die assembly adapted to allow adjustment and fine tuning of a die aperture while the extrusion process of a lithium or lithium alloy ingot is being carried out.

Procédé de fabrication d'anodes en lithium ou en alliage de lithium pour cellules électrochimiques employant un processus d'extrusion dans lequel un lingot de lithium ou d'alliage de lithium est transformé en une feuille mince. Le procédé permet l'extrusion d'une feuille mince dont la largeur dépasse le diamètre du lingot de lithium ou d'alliage de lithium et l'extrusion de feuilles minces en lithium ou en alliage de lithium à partir d'un ou de plusieurs lingots de lithium ou d'alliage de lithium. L'invention concerne aussi un ensemble de matrices conçu pour permettre l'ajustement et le réglage fin d'une ouverture de filière lors de l'extrusion du lingot de lithium ou d'alliage de lithium.

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