Process for preparing the porous metallic framework of an electrode carrier for the attachment of a take-off conductor
AssigneeVarta Batterie Aktiengesellschaft
InventorHans Sauer
Life of this patent
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Abstract
Discrete locations of an electrode web or electrode segment based on a porous metallic carrier framework, which are intended to receive the take-off conductor, are briefly heated to about 450.degree. C. and then cleared of active mass with compressed air. The heating, for which a stream of hot air is particularly suitable, has the effect of destroying the organic binder present in the active material. Following such treatment, a clean metal surface is made available for the welded attachment of the take-off conductor, of a size which is limited to the precise dimensions necessary for the connection.
Claims12
A process for preparing an electrode of a galvanic element which has a porous metallic framework carrier, to form a contact location for electrical and mechanical connection with a metal strip which serves as a take-off conductor, comprising the steps of:
- heating the contact location by exposing the contact location to a heat source;
- and thereafter
- subjecting the heated contact location to a stream of gas under pressure prior to connection of the take-off conductor.
A process for preparing an electrode of a galvanic element which has a porous metallic framework carrier and an active mass applied to the porous metallic framework carrier, to form a contact location for electrical and mechanical connection with a metal strip which serves as a take-off conductor, comprising the steps of:
- heating the contact location by exposing the contact location to a heat source, thermally decomposing the active mass at the contract location;
- and thereafter
- subjecting the heated contact location to a stream of gas under pressure, expelling the thermally decomposed active mass from pores of the metallic framework carrier prior to connection of the take-off conductor.
Dependencies are inferred from the claim text.