Method and apparatus estimating and controlling battery state

A processor-implemented method of generating battery state information, the method comprising:

• acquiring an electrochemical model that is expressed by parameters simplified by partial non-dimensionalising of an electrochemical reaction governing equation of a battery;
• acquiring one or more parameters corresponding to states of the electrochemical model;
• and
• generating either one or both of a table in which the acquired one or more parameters are mapped to the states and a function that defines a relationship between the acquired one or more parameters and the states.

A processor-implemented method of generating battery state information, the method comprising:

• acquiring an electrochemical model that is expressed by parameters simplified by parameter grouping of an electrochemical reaction governing equation of a battery;
• acquiring one or more parameters corresponding to states of the electrochemical model;
• and
• generating either one or both of a table in which the acquired one or more parameters are mapped to the states and a function that defines a relationship between the acquired one or more parameters and the states,
• wherein the acquiring of the one or more parameters comprises:
• acquiring charge transfer resistances corresponding to states of charge (SOCs) through impedance measurements for each SOC in a predetermined state of health (SOH) of the battery;
• and
• acquiring diffusion time constants of a cathode of the battery and diffusion time constants of an anode of the battery from the electrochemical model based on charge transfer resistances corresponding to the SOCs from among the charge transfer resistances, wherein the diffusion time constants correspond to the SOCs.

An apparatus for estimating a battery state, the apparatus comprising:

• a processor configured to:
• acquire parameters for estimating a present state of a battery based on a previous state of the battery;
• acquire a present usage environment of the battery;
• and
• estimate the present state by applying any one or any combination of any two or more of the previous state, the present usage environment, and the acquired parameters to an electrochemical model that is expressed by simplified parameters simplified by partial non-dimensionalising of an electrochemical reaction governing equation of the battery.