Electrochemical cell with circuit disconnect device

Details Electrochemical cell with circuit disconnect device Electrochemical cell with circuit disconnect device

1990-04-03

1990-12-04

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

Temperature control

429 54, H01M 1050

Patent

active

049753410

ABSTRACT:
The invention relates to an electrochemical cell employing a resettable or nonresettable safety disconnect device operable by a shape memory alloy element. The shape memory alloy element is preferably in the form of an accordion or coiled configuration that will be extended in normal operation of the cell and contract when the internal temperature exceeds a preselected value whereupon the shape memory alloy will break contact in the electrical circuit of the cell thereby rendering the cell inoperative.

REFERENCES:
patent: 4011366 (1977-03-01), Bones et al.
patent: 4035552 (1977-07-01), Epstein
patent: 4855195 (1989-08-01), Georgopoulos et al.

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