A computer device includes a non-transitory storage medium configured to store a plurality of processor executive commands and a processor configured to execute the plurality of processor executive commands. By executing the processor executive commands, the processor may be configured to estimate a state of charge (SOC) based on at least one of a measured voltage value, a measured current value, and a measured temperature value, correct the estimated SOC based on a polarization voltage of a secondary battery, determine a magnitude of a charging current based on the corrected SOC and the measured temperature value, and provide information on the determined magnitude of the charging current to a charging device.

For lithium-ion batteries that are composed of multiple battery cells and have a flat region in the SOC-OCV characteristic curve where the rate of change in open circuit voltage with respect to state of charge is less than or equal to a predetermined value, an equalization method is used to determine which battery cells should be subjected to equalization processing. The equalization cell determination device includes an acquisition unit that acquires the voltages of a plurality of battery cells immediately after charging of a lithium-ion battery is stopped, and a voltage difference between the voltages of the plurality of battery cells acquired by the acquisition unit. The battery includes a calculation unit and a determination unit that determines a battery cell to be subjected to equalization processing based on the plurality of voltage differences calculated by the calculation unit.

The present invention relates to a method for carrying out pulsed charging of an energy storage element (4) comprising, in a first phase of a charging cycle (E1), controlling a voltage profile (VC) having voltage regulation-driven increments (S1, S2, S3, S4, S5) defining a current profile (IC) in a charging cycle of a predetermined duration, and wherein a voltage increment (S1, S2, S3, S4, S5) is computed at a voltage amplitude at the time of a calculation step i according to a function depending on an estimate of the no-load voltage and on an estimate of the internal resistance at said time, on a coefficient n determining the charging duration and on the nominal capacity of the storage element. The invention is applicable to the fast-charging protocol, in particular for electromobility applications.