Management system and estimating method for battery parameter

A battery parameter management system comprising:

• an amperemeter configured to detect an amount of charge current supplied to a battery from a current source or an amount of discharge current supplied from the battery to a load;
• a voltmeter configured to measure an open-circuit voltage of the battery;
• a control switch unit configured to transmit the charge current supplied from the current source to the battery or transmit the discharge current outputted from the battery to the load in response to a control signal;
• and
• a processor configured to generate the control signal, apply the charge current and the discharge current measured by the amperemeter and the open-circuit voltage measured by the voltmeter to a battery equivalent model of the battery, and estimate parameters of elements forming the battery equivalent model,
• wherein the battery equivalent model comprises:
• an internal resistor of the battery;
• an internal capacitor representing the open-circuit voltage of the battery;
• and
• a parallel circuit comprising a dynamic resistor and a dynamic capacitor which exhibit a non-linear operation characteristic based on an electrochemical reaction inside the battery, wherein the internal resistor, the internal capacitor, and the parallel circuit are connected in series.