Water activation and pressure equalization of electrochemical ba

Details Water activation and pressure equalization of electrochemical ba Water activation and pressure equalization of electrochemical ba

1975-07-14

1977-03-15

Mack, John H.

Chemistry: electrical current producing apparatus, product, and

Preserving cell in storage feature

429119, H01M 600

Patent

active

040122344

ABSTRACT:
A battery pack is disclosed for an electrical device that is to be stored for an extended period until put into use in a body of water at some depth. The pack is comprised of fully charged batteries from which the electrolyte has been effectively removed for storing. Each battery is connected by a small tube to a reservoir containing an electrolyte-forming substance (which may be just water) or fully constituted electrolyte. Means on an inlet opens at a predetermined depth to admit water into the reservoir and force electrolyte (or just water in the case of battery plates being impregnated with electrolyte-forming substance) into the batteries. Each tube is also blocked by suitable means to hold electrolyte (or water) in the reservoir until its pressure exceeds a predetermined level. The battery pack is encased and the spaces between batteries are filled with inert pressure-equalization fluid so the outside of the batteries will be at the same pressure as the pressurized electrolyte.

REFERENCES:
patent: 3423245 (1969-01-01), Waller
patent: 3674566 (1972-07-01), Powers
patent: 3853630 (1974-12-01), Hausler
patent: 3859136 (1975-01-01), Perry et al.
patent: 3912541 (1975-10-01), Britz

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