High energy density pressure tolerant cell

Details High energy density pressure tolerant cell High energy density pressure tolerant cell

1992-10-19

1994-11-01

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 70, H01M 240

Patent

active

053606787

ABSTRACT:
A pressure tolerant high energy density battery (10) is described. The battery has a metal casing (12) having a pressure compensating means in the form of bellows (30) comprising a plurality of successive convolutions individually welded to one end of the battery opposite a terminal conductor (20). The conductor is mounted on the header (18) by a glass seal (22) and the active components for the battery comprise a cathode means (34) preferably made of either carbon or fluorinated carbon (CFx) and a binder sheeted on a metal foil and an anode means (36) preferably made by laminating battery grade lithium onto metal grids. A separator (38) is provided between the active battery components and the electrodes and separator are rolled into a spirally wound type formation and housed inside the battery, supported above the bellows. The casing is then preferably filled with a suitable liquid electrolyte comprising gamma butyrolactone having an electrolyte salt in a Li/CFx battery and chlorinated sulfuryl chloride in a Li/CSC battery, and hermetically sealed. A vent (32) is preferably provided to relieve pressure inside the battery.

REFERENCES:
patent: 1575226 (1924-01-01), Pichler
patent: 3391029 (1968-07-01), Orsino
patent: 3514341 (1968-05-01), Cook
patent: 3589940 (1971-06-01), Bridge et al.
patent: 3809581 (1974-05-01), Hutchison
patent: 4087590 (1978-05-01), Kraft
patent: 4109062 (1978-08-01), McCartney et al.
patent: 4237197 (1980-12-01), Hart

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