Lamination process and apparatus for alkali metals or alloys...

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B21B 3/00 (2006.01) B21B 1/40 (2006.01) B21B 13/02 (2006.01) B21B 29/00 (2006.01) B21B 37/38 (2006.01) B21B 38/02 (2006.01) B21B 38/04 (2006.01) B21B 38/06 (2006.01)

Patent

CA 2499056

An apparatus for and method of manufacturing lithium or lithium alloy anodes for electrochemical cells by a lamination process wherein a lithium or lithium alloy sheet is reduced into a thin lithium or lithium alloy film. The method and apparatus provide adjustments of the profile defined by the meeting surfaces of a pair of working rollers to compensate for thermal dilation of the working rollers or to compensate for irregular thickness of the lithium or lithium alloy sheet to control the shape and profile of the lithium or lithium alloy film being laminated.

Cette invention se rapporte à un appareil et à un procédé servant à fabriquer des anodes en lithium ou en alliage de lithium pour des piles électrochimiques, au moyen d'une technique de stratification dans laquelle une feuille de lithium ou d'alliage de lithium est réduite en mince film de lithium ou d'alliage de lithium. Ce procédé et cet appareil permettent de régler le profil défini par les surfaces de contact d'une paire de cylindres de travail en vue de compenser la dilatation thermique des cylindres de travail ou les irrégularités d'épaisseur de la feuille de lithium ou d'alliage de lithium, ce qui permet de maîtriser la forme et le profil du film de lithium ou d'alliage de lithium en cours de stratification.

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