| 摘要 |
PROBLEM TO BE SOLVED: To provide a power source device capable of simply correcting a voltage when the voltage or relative voltage of battery module is erroneously detected (abnormal detection). SOLUTION: The power source device comprises a battery 2 constructed by serially connecting a plurality of battery modules 1; a voltage detection part 5 for detecting relative voltages (V<SB>1</SB>to V<SB>n</SB>) of respective connection points (P<SB>1</SB>to P<SB>n</SB>) between the battery modules 1 against the voltage at a prescribed standard connection point P<SB>0</SB>, an erroneous detection judging part 6 judging whether the detected relative voltages are either an erroneously detected voltage or the normal detected voltage, and an arithmetic circuit 7 calculating the voltages of the respective battery modules 1 depending on the relative voltage judged as normal detected voltages. When an erroneous voltage is found on one contact point (erroneously detected point), the arithmetic circuit 7 calculates a recovery voltage depending on the relative voltage detected on two connection points adjacent to the erroneously detected connection point, and calculates the voltage of the battery module 1 by replacing the voltage detected at the erroneously detected connection point with the recovery voltage. COPYRIGHT: (C)2006,JPO&NCIPI
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