Method for recovering an accumulator battery and apparatus for performing thereof

A method for recovering the accumulator battery including steps of:

• charging preliminarily an accumulator battery with direct current;
• during the charging process, measuring a voltage across the accumulator battery, and an electrolyte temperature and density;
• logging measured parameters;
• prior to beginning a process of recovering the accumulator battery, recording predetermined parameters of a technological process of recovering the accumulator battery into a memory;
• during the process of recovering the accumulator battery, comparing the recorded predetermined parameters with values of the measured actual accumulator battery parameters, and correcting the actual parameters if the measured actual parameters deviate from the recorded predetermined parameters of the technological process;
• terminating the step of charging the accumulator battery with the direct current when the measured actual accumulator battery parameters reach values of the predetermined parameters recorded in the memory;
• thereafter, charging the accumulator battery by passing therethrough a sequence of rectangular current pulses while holding an amplitude of the pulses constant if a temperature of the electrolyte is below a predetermined temperature value, and, if the temperature of the electrolyte exceeds the predetermined temperature value, reducing the amplitude of the rectangular current pulses to a value at which the temperature of the electrolyte is decreased to the predetermined temperature value, the step of charging the accumulator battery being carried out by passing therethrough the sequence of the rectangular current pulses which have a magnitude in the range of 400A to 480A and a duty factor of 100 to 400;
• discharging the accumulator battery during pauses between the rectangular pulses for charging;
• terminating cycles of charging with the rectangular pulses and discharging during the pauses therebetween when the measured actual parameters reach values of the recorded predetermined parameters defining an end of the process for charging the battery;
• thereafter, measuring a battery capacity by using a control discharge of the battery;
• and
• terminating the control discharge when a battery voltage reaches a maximum permissible value set for the battery.