FIELD: electrical engineering.
SUBSTANCE: proposed method is used for reconditioning lead battery cells filled with sulfuric acid based electrolyte using additive based on aqueous solution of hydrogen peroxide, saccharides, and/or aldehydes, or their derivatives. Novelty is that lead battery is alternately or periodically charged and discharged in the course of electrochemical reconditioning of cells upon its treatment with some reconditioning additives based on aqueous solution of hydrogen peroxide and after main charge. Battery is charged to full possible level by current amounting to 1.1-4% of rated value and its discharge is conducted with current of 0.01-5% of rated capacity of cell or battery; as an alternative, battery is charged in two phases by current of constant magnitude. Discharge below admissible value is conducted by current amounting to 1 to 4% of rated capacity followed by charging with current amounting to 3-10% of battery capacity until voltage per cell or per any cell of battery is reduced to 1.6 V. In the process battery acquires 10-15% of its rated capacity; entire procedure is repeated two to five times. Reconditioning additive has 1 to 70 ml of sulfuric acid at density of 1 to 1.32 g·cm-3, 0.1 to 10 g of saccharides in the form of solid material and/or aldehydes, or their derivatives, 0.1 to 10 g of sodium and/or potassium bicarbonate, and/or at least one hydroxide out of group of alkali metals in the form of solid material, and 0.1 to 20 g (better 0.5 to 2 g) of disulfonic acid dinaphthyl methane disodium salt per every liter of hydrogen peroxide aqueous solution. Reconditioning additive can also incorporate 0.1 to 10 g of sodium perborate and/or tetraborate, and/or pyrophosphate in the form of solid material.
EFFECT: enhanced battery capacity exceeding primary rated value.
11 cl, 5 ex
