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

Claim 0:
1. A battery condition monitoring apparatus disposed between a main battery and a sub-battery, the battery condition monitoring apparatus comprising:
a measurer configured to measure an ambient temperature of the sub-battery, a charging voltage applied from a direct current (DC) converter to the sub-battery, and a charging current flowing to the sub-battery from the main battery;
a calculator configured to calculate an impedance of the sub-battery by using the charging voltage and the charging current; and
a determiner configured to determine a condition of the sub-battery by considering at least one of the charging current according to the ambient temperature and the impedance according to the ambient temperature,
wherein the determiner determines the condition of the sub-battery based on impedances corresponding to the measured ambient temperature which are defined in a determination table and the calculated impedance; and
wherein the determination table defines a first impedance, corresponding to each ambient temperature, at which the sub-battery is determined to be in a normal slate, and defines a second impedance, corresponding to each ambient temperature, at which the sub-battery is determined to be in an acting state.