METHOD FOR MANUFACTURING SEALED LEAD ACCUMULATOR Russian patent published in 2019 - IPC H01M10/06 H01M4/22 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in production of lead accumulators using gel technology. According to the invention, a method for manufacturing a sealed lead accumulator, in which the porous volume of the electrode accumulator unit is first filled with a sulphuric acid electrolyte in the liquid state of the calculated density (sulphuric acid solution), is characterized by that after formation and complete discharge of the accumulator, the electrolyte is removed from it, except for the electrolyte remaining in the pore volume of the electrode unit, and the entire volume of the empty battery is filled with a solution of colloidal dispersion of silicon dioxide (15 % SiO₂ aqueous solution), then the battery is fully charged and another 2−3 training cycles are carried out to mix the silicon dioxide with the liquid electrolyte in the pores of the plates, followed by holding until the colloidal solution is completely structured and the gel is formed in the accumulator, wherein final density of gel electrolyte in storage monoblock is provided by calculation method by determining required density of liquid forming electrolyte, sulphate ions of which with known content after formation and subsequent discharging of the accumulator completely pass from the electrolyte solution to the pores of the plates, and correction of the electrolyte density, depending on the design of the accumulator, is carried out using instruments for setting a certain degree of discharge of the accumulator battery before draining the electrolyte and varying the concentration of the solution of the colloidal dispersion of silicon dioxide or the initial density of the electrolyte. Besides, manufacturing method of sealed lead accumulator is characterized by the fact that degree of discharge and subsequent charge is estimated using acid-base indicator of bromotymol blue water-soluble introduced into initial shaping electrolyte.

EFFECT: technical result of the invention is improved technology of preparing gel electrolyte by reducing the number of traditionally performed operations and complete exclusion of the operation of preparing and dispensing the gel substance into the accumulator, without deterioration of electrical characteristics of the battery, as well as introduction of visualization of the degree of charge of the accumulator battery during correction of density of electrolyte.

1 cl, 4 tbl