Lithium ion electrochemical cell with safety valve electrical di

Details Lithium ion electrochemical cell with safety valve electrical di Lithium ion electrochemical cell with safety valve electrical di

1996-07-10

1998-12-29

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

429 53, H01M 200

Patent

active

058539123

ABSTRACT:
An explosion-proof valve electrical disconnect assembly incorporates a vent valve contact disk which seals the can of a compact electrochemical cell and which faces a juxtaposed stripper contact disk welded at the center by a weld nugget at a weld point, forming a rigid, preferably increased thickness, mass. The underlying stripper contact disk is weakened about the weld point, surrounding the weld nugget to ensure pull-through of the stripper contact disk portion immediately adjacent to the weld connection to effect initial electrical separation of the two contact disks. Subsequent rupture of the vent valve contact disk releases high pressure gas internally from the cell. A semi-rigid assembly cup may support a rigid grommet functioning to sandwich the vent valve contact disk and the stripper contact disk facilitated by crimping of the can top about a deformable L-shaped cross-section annular assembly cup. A current responsive PTC element forms a second circuit breaker independent of the first mechanical circuit breaker formed by the two contact disks.

REFERENCES:
patent: 4788112 (1988-11-01), Kung
patent: 4855195 (1989-08-01), Georgopoulos et al.
patent: 4943497 (1990-07-01), Oishi et al.
patent: 4975341 (1990-12-01), Tucholoski et al.
patent: 5376467 (1994-12-01), Abe et al.
patent: 5405715 (1995-04-01), Dawson et al.
patent: 5418082 (1995-05-01), Taki et al.
patent: 5427875 (1995-06-01), Yamamoto et al.
patent: 5464705 (1995-11-01), Wainwright
patent: 5532075 (1996-07-01), Alexandres et al.

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