| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the occurrence of performance variations in a plurality of energy storage parts constituting a power supply system. Ž<P>SOLUTION: A converter 8-1 executes power conversion operation between a main energy storage part 6-0 and a main positive busbar MPL/a main negative busbar MNL. A converter 8-2 executes power conversion operation between any one of sub energy storage parts 6-1, 6-2, selectively connected via switch circuits SW1, SW2, and the main positive busbar MPL/the main negative busbar MNL. A converter ECU 2 calculates the integrated value of the discharge current from the time when starting the use of each energy storage part by using charge/discharge current values Ib_m, Ib_s1, Ib_s2 from charge/discharge current detecting parts 10-0, 10-1, and 10-2 as an index of the deterioration degree of each energy storage part. If a target value of power transferred between a power supply system 1 and a drive-force generating part 3 is set, the converter ECU 2 determines a power distribution so that power charged/discharged from the energy storage part having a relatively lower deterioration degree becomes relatively large. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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