Safety vent for storage battery or cell

Details Safety vent for storage battery or cell Safety vent for storage battery or cell

1999-03-25

2000-12-12

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Sealed cell having gas prevention or elimation means

429 62, 429 65, 429129, 429163, 429185, H01M 1034

Patent

active

061596302

ABSTRACT:
Safety vent for a battery, sensitive to an abnormal rise in temperature, closed by a cover (4), separated from the active materials by an insulating element (21) and carrying two contact terminals (7, 8) electrically connected to the electrodes via connection means (5, 6), wherein at least one of the contact terminals (7, 8) is formed at least partially by a rigid metal rod (30), mounted with an annular clearance (18) in a tube (11) of which one portion (11a) of smaller diameter passes through the insulating element (21) and the cover (4), and of which a portion (11b) of larger diameter rests on the inner face (21a) of the insulating element (21), the other end (13) thereof being crimped over the outer face (4b) of the cover (4) and in that the clearance (18) formed between the tube (11) and the rod (30) is sealed by a thermofusible composition (14).

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