Electric storage battery

Chemistry: electrical current producing apparatus – product – and – Having specified venting – feeding or circulation structure – Venting structure

Patent

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Details

429 88, H01M 212

Patent

active

041172051

ABSTRACT:
An electric storage battery comprising a closure sealed with a battery casing and having gas venting means which allows gases from cells to be vented out of the storage battery, but which prevents electrolyte mist and water steam from the cells carried together with the gases to be leaked out of the storage battery. A gas cooling chamber is provided on a battery cover of the closure and has a water returning cylindrical portion provided on a bottom of the gas cooling chamber and having a water returning lateral port adapted to return the water. A gas filter chamber is provided adjacent to the gas cooling chamber to communicate with the gas cooling chamber through an opening in the wall of the gas cooling chamber at the top thereof and has an explosion-proof gas filter of porous ceramics provided to vent gases therethrough. A labyrinth chamber is provided in the gas cooling chamber at the bottom thereof to vertically move through a tortuous path gases together with electrolyte mist and water steam and has an inlet through which the gases together with the electrolyte mist and the water steam are introduced into the labyrinth chamber and an outlet through which the gases with the remaining water are introduced into the gas cooling chamber. The labyrinth chamber is also provided with an electrolyte returning port adapted to return the liquefied electrolyte into the battery cells.

REFERENCES:
patent: 3597280 (1971-08-01), Hennen
patent: 3708348 (1973-01-01), Painter et al
patent: 3772088 (1973-11-01), Hennen et al.
patent: 3879227 (1975-04-01), Hennen

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