Patent ID: 11942810
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  G  Y | IPC B  G  H

Claim 0:
1. An apparatus for controlling an operation of a secondary battery using a relative deterioration degree of an electrode, comprising:
a sensor configured to measure voltage, current and temperature of the secondary battery; and
a control unit operatively coupled to the sensor unit,
wherein the control unit is configured to:
receive the measured voltage, current and temperature of the secondary battery from the sensor unit,
determine a State Of Charge (SOC) of the secondary battery in response to a pulse current flowing through the secondary battery in a preset deterioration diagnosing SOC section, wherein the pulse current includes each of a charging/discharging section and a rest section;
determine an electrochemical reaction resistance from a voltage change amount measured during a preset initial time in each section of the pulse current and determine an ion diffusion resistance from a voltage change amount measured during a remaining time in each section of the pulse current excluding the initial time,
determine a deterioration-biased electrode by comparing a deterioration diagnosing resistance ratio, which is a ratio of the ion diffusion resistance to the electrochemical reaction resistance, with a preset reference deterioration diagnosing resistance ratio, and
adaptively adjust an operation condition of a next charging/discharging cycle according to the determined deterioration-biased electrode.