Closure device for lead-acid batteries

Details Closure device for lead-acid batteries Closure device for lead-acid batteries

1981-09-29

1983-07-19

Lefevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Having specified venting, feeding or circulation structure

Venting structure

429 89, H01M 212

Patent

active

043944230

ABSTRACT:
A closure device for lead-acid batteries includes a filter of granulated activated carbon treated to be hydrophobic combined with means for preventing explosion of emitted hydrogen and oxygen gas. The explosion prevention means includes a vertical open-end tube within the closure housing for maintaining a liquid level above side wall openings in an adjacent closed end tube. Gases vent from the battery through a nozzle directed inside the closed end tube against an impingement surface to remove acid droplets. The gases then flow through the side wall openings and the liquid level to quench any possible ignition prior to entering the activated carbon filter. A wick in the activated carbon filter conducts condensed liquid back to the closure housing to replenish the liquid level limited by the open-end tube.

REFERENCES:
patent: 2615062 (1952-10-01), Craig
patent: 3038954 (1962-06-01), Pattison et al.
patent: 3630788 (1971-12-01), Hennen
patent: 3832238 (1974-08-01), Marui et al.
patent: 3879227 (1975-04-01), Hennen
patent: 4002496 (1977-01-01), Nitta
patent: 4084039 (1978-04-01), Laig-Horstebrock
patent: 4117205 (1978-09-01), Kitai

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