Method and apparatus for optimizing battery
A battery optimization method and apparatus is provided. The battery optimization method includes selectively adjusting a parameter set related to a corresponding SoC section among a plurality of parameters of an electrochemical thermal (ECT) model based on operating data of each SoC section, and updating the plurality of parameters of the ECT model based on adjusted parameter sets.
1 . A processor-implemented battery optimization method comprising:
determining a first state of charge (SoC) value corresponding to first operating data of a battery, wherein the first operating data comprises at least one of a voltage, a current, or a temperature of the battery according to an operation of the battery;
selecting a first SoC section corresponding to the first SoC value from an SoC section;
selectively adjusting, based on the first operating data, a first parameter set, related to the first SoC section, selected from among parameters of an electrochemical thermal (ECT) model configured to simulate the battery, the parameters of the ECT model comprising the first parameter set;
updating the parameters of the ECT model based on a result of the selectively adjusting the first parameter set; and
performing a battery state optimization for the battery by controlling a charging of the battery using the ECT model with the updated parameters of the ECT model.
2 . The battery optimization method of claim 1 , wherein the parameters of the ECT model comprise one of a constant parameter independent of a SoC level of the battery and a diffusion parameter dependent on the SoC level of the battery, and
each parameter of the first parameter set is the diffusion parameter.
3 . The battery optimization method of claim 2 , wherein the diffusion parameter comprises one of a charging parameter related to charging of the battery and a discharging parameter related to discharging of the battery.
4 . The battery optimization method of claim 3 , wherein the first parameter set comprises the charging parameter, in response to the first operating data being measured during the charging of the battery, and the first parameter set comprises the discharging parameter, in response to the first operating data being measured during the discharging of the battery.
5 . The battery optimization method of claim 2 , wherein the constant parameter comprises one of a film resistance, a volume fraction of an active material, and an anode-cathode open circuit potential (OCP) offset.
6 . The battery optimization method of claim 1 , wherein the battery is configured to supply power to a battery powered apparatus, and
the first operating data is generated in response to the battery supplying the power to the battery powered apparatus.
7 . The battery optimization method of claim 1 , further comprising:
determining a new first parameter set by updating the first parameter set, in response to the selective adjusting of the first parameter set being completed; and
selectively adjusting a second parameter set related to a second SoC section of the SoC section based on new parameters of the ECT model comprising the new first parameter set.
8 . The battery optimization method of claim 7 , wherein the selectively adjusting of the second parameter set comprises:
determining a second SoC value corresponding to second operating data of the battery;
selecting the second SoC section to which the second SoC value belongs from the SoC section; and
selectively adjusting, based on the first operating data and the second operating data, the second parameter set related to the second SoC section from among the new parameters of the ECT model.
9 . The battery optimization method of claim 8 , wherein different adjustment weights are applied to selectively adjust the first parameter set and selectively adjust the second parameter set.