Lead-acid cells and batteries

Details Lead-acid cells and batteries Lead-acid cells and batteries

1997-06-11

1999-02-23

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429245, H01M 474

Patent

active

058741860

ABSTRACT:
A lead-acid cell or battery includes positive plates made from a lead-based alloy containing calcium, tin, and silver in amounts selected based upon the type of application and the plate fabrication method utilized, starting, lighting and ignition battery grids being directly cast and having calcium present in an amount of 0.03% to 0.050%, tin in an amount of 0.65% to 1.25%, and silver in an amount of from 0.018% to 0.030%, and the grids used in sealed, lead-acid cells comprising, when made by gravity casting, from about 0.035% to 0.055% calcium, 0.95% to 1.45% tin, and 0.018% to 0.030% silver, and, when made by continuous strip casting, calcium in the range of from 0.030% to 0.050%, tin in the range of from 0.95% to 1.25%, and silver in the range of from 0.017% to 0.030%, all of the alloy percentages being based upon the total weight of the grid.

REFERENCES:
patent: 1918947 (1933-07-01), Williams
patent: 2678340 (1954-05-01), Stoertz
patent: 4358518 (1982-11-01), Matter
patent: 4891284 (1990-01-01), Goodwin
patent: 4939051 (1990-07-01), Yasuda et al.
patent: 5298350 (1994-03-01), Rao

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