Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1998-03-06
2000-07-11
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
296232, 429161, 429163, 429175, H01M 210, H01M 200, H01M 600
Patent
active
060870419
ABSTRACT:
An electrochemical cell is disclosed having a cylindrical can having an open end and a closed end, and a first electrode having a generally hollow cylindrical shape molded in place within the can such that an outer cylindrical surface of the first electrode contacts an inner cylindrical surface of the can. The first electrode has a recess adjacent to the inner cylindrical surface of the can at an end of the first electrode proximate the open end of the can to accommodate any flashing that is formed along the interior side walls of the can when the first electrode is molded in place. The electrochemical cell further includes a second electrode having a polarity opposite the first electrode disposed within a hollow cavity of the first electrode, a separator lining the hollow cavity within the first electrode so as to physically separate the first and second electrodes, and a collector assembly supported by the first electrode for sealing the open end of the can. As an alternative to providing a recess in the first electrode, a flat annular ring made of electrochemically active material may be provided between the flat upper surface of the first electrode and the bottom surface of the collector assembly.
REFERENCES:
patent: 3314824 (1967-04-01), Spanur
patent: 3664878 (1972-05-01), Amthor
patent: 3884722 (1975-05-01), Tucholski
patent: 4122241 (1978-10-01), Ciliberti, Jr. et al.
patent: 4357398 (1982-11-01), Nelson et al.
patent: 4564568 (1986-01-01), Hasenauer et al.
patent: 5173371 (1992-12-01), Huhndorff et al.
Puglia Frank J.
Tucholski Gary R.
Dove Tracy
Eveready Battery Company Inc.
Fraser Stewart A.
Nuzzolillo Maria
Welsh Robert W.
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