Grid electrode for lead-acid cell

Details Grid electrode for lead-acid cell Grid electrode for lead-acid cell

1989-12-21

1990-12-25

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

H01M 473

Patent

active

049802526

ABSTRACT:
A grid structure for the positive electrode of a lead-acid battery cell is composed of several substructures (modules), typically having mutually identical geometric designs. Each of the substructures includes a plurality of metallic members having closed geometric shapes, each contained within another, which satisfy a specific growth ratio relationship, namely, that the ratio of the surface area to cross-section area of any member is no greater than such ratio for a member contained within it. In a preferred embodiment, each such substructure is composed of a plurality of concentric rectangles, each (except the outermost) contained within another. Each rectangle is formed by four lead (or lead alloy) rod-like strips. The ratio of surface area to the cross section for the strips of any given rectangle located in any angular sector is no greater than such ratio for the strips located in that same sector within the given rectangle, whereby long useful battery cell lifetime is prolonged in a desirable rectangular battery configuration.

REFERENCES:
patent: 2756269 (1956-07-01), Harrison et al.
patent: 3083250 (1963-03-01), Geissbauer
patent: 3556853 (1971-01-01), Cannone

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