Secondary seal for vented electrochemical cells

Details Secondary seal for vented electrochemical cells Secondary seal for vented electrochemical cells

1990-06-08

1991-08-20

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

429 56, 429168, 429177, H01M 212, H01M 204

Patent

active

050413457

ABSTRACT:
An electrochemical cell having a temperature-activated vent in series with a pressure-activated vent. The inner cover of the inner cell housing has an upstanding rim around a central pressure release vent. The outer cover that closes the outer cell container has an annular area pressed against this rim and sealed to the rim by a heat fusible solder to form a temperature-responsive vent mechanism in series with the pressure-responsive vent.

REFERENCES:
patent: 3754997 (1973-08-01), Ralston
patent: 3841913 (1974-10-01), Anderson
patent: 3855006 (1974-12-01), Kegelman
patent: 4397919 (1983-08-01), Ballard
patent: 4931368 (1990-06-01), Ayers et al.

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