Electrochemical cells having spirally wound electrode assemblies

Details Electrochemical cells having spirally wound electrode assemblies Electrochemical cells having spirally wound electrode assemblies

1989-05-08

1990-10-16

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429211, H01M 610

Patent

active

049634453

ABSTRACT:
A spirally wound electrode assembly for use in electrochemical cells has an outer anode layer and an electrically insulating and ionically impermeable overwrap film disposed about the assembly. The outer anode layer has a tab located thereon. The overwrap film is inserted into the assembly between the end of the cathode layer and one of the anode layers. Upon forced discharge of the cell, the portion of the anode with the tab is disconnected in a fuse-like manner from the remainder of the anode, and the circuit is thereby broken.

REFERENCES:
patent: 4333994 (1982-06-01), Urry
patent: 4450213 (1984-05-01), Dey
patent: 4507368 (1985-03-01), Hashimoto
patent: 4550064 (1985-10-01), Yen et al.
patent: 4604333 (1986-08-01), Ikeda et al.
patent: 4707421 (1987-11-01), McVeigh, Jr.

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