METHOD OF ACCELERATED GENERATION OF CAPACITANCE OF CLOSED NICKEL-CADMIUM ACCUMULATORS BY CHARGING WITH ASYMMETRICAL CURRENT Russian patent published in 2012 - IPC H01M10/44 

FIELD: electricity.

SUBSTANCE: accumulators are charged with heteropolar current pulses with stabilised amplitudes of discharge and charge pulses at the ratio of amplitudes of discharge and charge pulses equal to 3÷4, with duration of a charge pulse equal to 200÷240 ms and a discharge pulse equal to 10÷20 ms with pauses between them equal to 0÷2 ms, amplitudes of the charge pulse are numerically equal to 0.2÷0.8 of the nominal capacitance, the charging process at the first cycles of capacitance generation is stopped when 250÷500% of the nominal capacitance has been sent to the accumulator, the charging process at subsequent cycles of capacitance generation is stopped when 120÷250% of the nominal capacitance has been sent to the accumulator, besides, the charging process at the first cycle of capacitance generation is stopped when 100% of the nominal capacitance has been sent to the accumulator, and the electrolyte is replaced, after which the charge is continued.

EFFECT: considerable reduction of a number of charge-discharge cycles of capacitance generation in closed nickel-cadmium accumulators and accumulator batteries.