THE SEALED LEAD BATTERY Russian patent published in 2012 - IPC H01M10/22 

FIELD: electrotechnical industry.

SUBSTANCE: invention relates to electrotechnical industry and can be applied to production of lead accumulators (batteries); in accordance with the invention the polyvinyl alcohol with gram-molecular weight of about 5000÷1000000 and content of acetate groups 0.4÷20%, concentration 0.1÷10 mass percent, is used as an additive densifier of sulfuric acid electrolyte, at that the polyvinyl alcohol is either added into the battery before filling the electrolyte or directly to the sulfuric acid electrolyte before pouring it into the battery; thanks to that the structuring of the electrolyte containing the polyvinyl alcohol with the above characteristics flows very slowly, the efficiency of the filling the battery with the electrolyte is increasing: pores of electrodes and separators manage to soak fully before the electrolyte comes fatty; the high efficiency of the batteries filling allows to fill the sealed battery without vacuuming.

EFFECT: enhancement of the capacitative features of the sealed lead battery.

1 cl