| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology that effectively copes with an influence caused by a self-discharge difference among battery groups each constituting a battery pack. SOLUTION: This battery pack is formed by combining a plurality of the battery groups composed of one or a plurality of battery cells. Power feed from the first battery group to the second battery group is conducted by a feeder means with respect to the first and the second battery groups (lithium-ion battery group 110 and nickel-hydrogen battery group 120) among the plurality of battery groups, on the basis of a residual capacity difference caused by the self-discharge difference between at least one battery cell in the first battery group (lithium-ion battery group 110) and at least one battery cell in the second battery group (nickel-hydrogen battery group 120). COPYRIGHT: (C)2005,JPO&NCIPI
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