Hermetic seal for an electrochemical cell

Details Hermetic seal for an electrochemical cell Hermetic seal for an electrochemical cell

1985-06-27

1986-02-25

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

429174, 429184, 429194, 429196, H01M 212

Patent

active

045728771

ABSTRACT:
The housing of an electrochemical cell system has a vent passageway defined by a flared flange. The flange is flared outwardly with respect to the longitudinal axis of the passageway so that the opening of the vent passageway facing to the interior of the housing is smaller than the opening of the vent passageway facing to the exterior of the housing. An electrically insulating material, such as glass, is fused in the passageway to form a hermetic seal. The outwardly flared flange facilitates removal of the seal material responsive to excessive internal cell pressures so the cell can be vented safely.

REFERENCES:
patent: 3840408 (1974-10-01), Bondley
patent: 4047292 (1977-09-01), Shaffer
patent: 4115629 (1978-09-01), Dey et al.
patent: 4233372 (1980-11-01), Bro et al.
patent: 4279975 (1981-06-01), Bowsky
patent: 4486514 (1984-12-01), Chaney, Jr.

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