Alcatel

Marc Bariand

Jean-Louis Liska

Thierry Berlureau

Patrick Sanchez

Edith Metayer

A maintenance-free open industrial storage battery includes an electrode assembly comprising at least one positive electrode, one negative electrode, one separator disposed between the negative electrode and the positive electrode, an alkaline electrolyte covering the top end of the assembly before electrical cycling and a valve the relative operating pressure of which is less than 1 bar. The total capacity of the negative electrodes is greater than the total capacity of the positive electrodes. The separator is permeable to oxygen and the storage battery contains an oxygen recombination device such that after at least one cycle of charging and discharging the storage battery operates without loss of electrolyte at a charging current at least equal to Ic/10 where Ic is the current discharging the capacity of the storage battery in one hour.

Maintenance-free open industrial type alkaline electrolyte storage battery

The present invention provides a method of controlling rapid charging of an alkaline-electrolyte industrial storage cell of the 'maintenance-free' or 'sealed' type, the cell possessing a nominal capacity Cn, a voltage U, and an internal temperature T, wherein charging is stopped at a percentage charge greater than 75% of Cn as follows:

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Bordeaux, France

Marc Bariand