Patent ID: 11913994
Assignee: HYUNDAI MOBIS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G  H

Claim 4:
5. A method, the method comprising:
measuring an ambient temperature of a sub-battery;
measuring a charging voltage from a direct current (DC) converter provided to the sub-battery and a charging current flowing from a main battery to the sub-battery; and
determining a condition of the sub-battery by considering at least one of the charging current according to the ambient temperature and the charging voltage according to the ambient temperature,
wherein the condition the sub-battery is determined based on charging currents corresponding to the measured ambient temperature which are defined in a determination table and the measured charging current; and
wherein the determination table defines a charging current corresponding to each ambient temperature, at which the sub-battery is determined to be in a normal state, and defines a second charging current, corresponding to each ambient temperature, at which the sub-battery is determined to be in an aging state.