Maintenance-free lead-acid cell

Details Maintenance-free lead-acid cell Maintenance-free lead-acid cell

1977-10-19

1979-01-30

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

H01M 214

Patent

active

041373774

ABSTRACT:
A rechargeable maintenance-free normally sealed lead-acid cell is disclosed having a multilayered electrolyte-retaining separator composed of outer highly porous and compressible microdiameter glass fibrous layers, which contact the positive and negative plates, and a sandwiched substantially dimensionally stable microporous layer having, compared with the glass fibrous layers, a substantially higher resistivity and lesser thickness. The electrolyte is proportioned within the cell and separator so that the bulk of the electrolyte in the cell is contained within the pores of the multilayered separator, and distributed between the layers of the separator in a preferred manner.

REFERENCES:
patent: 2117371 (1938-05-01), Slayter
patent: 3014085 (1961-12-01), Bachman
patent: 3753784 (1973-08-01), Eisenacher

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