| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for determining the state of a secondary battery. <P>SOLUTION: A secondary battery system 10 comprises a plurality of secondary batteries 50 connected in series and a voltmeter for sequentially measuring a voltage value of the plurality of secondary batteries 50. In determining the state of the secondary batteries 50, the secondary battery system 10 measures a voltage value V of each secondary battery 50 to calculate a differential voltage value ΔV. In addition, the differential voltage value ΔV is divided by a period ΔT used for calculating the differential voltage value ΔV to calculate a determination value H and the state of the secondary batteries 50 is determined using the determination value H. Since the differential voltage value ΔV is proportional to the internal resistance of the secondary batteries 50, the state of the secondary batteries 50 may be determined using the determination value H. <P>COPYRIGHT: (C)2013,JPO&INPIT |
