METHOD FOR MANUFACTURING SEALED NICKEL-CADMIUM BATTERY Russian patent published in 2008 - IPC H01M10/34 H01M10/28 

FIELD: electrical engineering; sealed nickel-cadmium batteries using cloth-separator.

SUBSTANCE: proposed method for manufacturing sealed nickel-cadmium batteries includes assembling stack of plates with separating material placed between positive and negative plates, placing this assembly into battery case, pouring electrolyte, conducting charge-discharge cycles, and replacing electrolyte. This is followed by cycling in aqueous solution of potassium hydroxide of 240-320g/l concentration and in aqueous solution of potassium hydroxide of 300-350 g/l concentration adding 15-35 g/l of lithium hydroxide in charge-discharge-charge sequence; by end of charge under current electrolyte is drained and cycling is conducted in aqueous solution of potassium hydroxide using electrolyte of 100-110 g/l concentration in discharge-charge-discharge sequence; by end of discharge electrolyte is drained. In the process plates are kept in electrolyte for 10-15 minutes prior to cycling in lithium hydroxide solution. Proposed battery is suited for use at temperatures as low as -40 to -50 °C.

EFFECT: ability of battery normal operation at sub-zero temperatures.

2 cl, 1 tbl