Current interrupter for electrochemical cells

Chemistry: electrical current producing apparatus – product – and – With nonbattery electrical component electrically connected...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

429 61, 429 62, 429 53, H01M 212

Patent

active

060370718

ABSTRACT:
A current interrupt mechanism for electrochemical cells is disclosed. A thermally activated current interrupt mechanism is integrated into an end cap assembly for an electrochemical cell. The thermally responsive mechanism preferably includes a free floating bimetallic disk or shape memory alloy member which deforms when exposed to elevated temperature causing a break in an electrical pathway within the end cap assembly. This prevents current from flowing through the cell and effectively shuts down an operating cell. The thermally responsive mechanism may include a heat producing electrical resistance means, preferably a Zener diode, to enhance thermal sensitivity. The end cap assembly may include a pressure responsive mechanism which ruptures when there is extreme gas pressure buildup. Gas is allowed to escape from the cell interior to the external environment through a series of vent apertures within the end cap assembly.

REFERENCES:
patent: 3373057 (1968-03-01), Jost et al.
patent: 3617386 (1971-11-01), Bosben et al.
patent: 4035552 (1977-07-01), Epstein
patent: 4855195 (1989-08-01), Georgopoulos et al.
patent: 4975341 (1990-12-01), Tucholski et al.
patent: 4992339 (1991-02-01), Georgopoulos
patent: 5766793 (1998-06-01), Kameishi et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Current interrupter for electrochemical cells does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Current interrupter for electrochemical cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current interrupter for electrochemical cells will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-167415

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.