(JP10084627-A)      The apparatus comprises a voltage-correcting storage battery connected in parallel to each of several storage battery cells. A storage battery cell selector selects an arbitrary storage battery cell. A switching device constitutes a circuit for charge transfer between a selected storage battery cell and the voltage-correcting storage battery.    A controller controls the switching operation of the switching device. The storage battery cell group constitutes a storage battery of electric double layer type. The electrostatic capacitance value of the voltage-correcting storage battery is small compared with the electrostatic capacitance value of the storage battery cells.    ADVANTAGE -   Obviates voltage differences due to performance variations among individual storage battery cells to increase working voltage range while improving durability of storage battery as whole.    (TW344721-A)      A storage battery voltage control apparatus capable of equalizing the voltages of each of the storage battery cells in a storage battery cell group connecting a plurality of storage battery cells in series, which comprises: a voltage-correcting storage battery connected in parallel to each of the storage battery cells; storage battery cell selection means capable of arbitrarily selecting a storage battery cell; switching means capable of transferring charges between a selected storage battery cell and the voltage- correcting storage battery; and switch control means for controlling the switching means.    (US5932932-A)      The apparatus comprises a voltage-correcting storage battery connected in parallel to each of several storage battery cells. A storage battery cell selector selects an arbitrary storage battery cell. A switching device constitutes a circuit for charge transfer between a selected storage battery cell and the voltage-correcting storage battery.    A controller controls the switching operation of the switching device. The storage battery cell group constitutes a storage battery of electric double layer type. The electrostatic capacitance value of the voltage-correcting storage battery is small compared with the electrostatic capacitance value of the storage battery cells.    ADVANTAGE -   Obviates voltage differences due to performance variations among individual storage battery cells to increase working voltage range while improving durability of storage battery as whole.    (JP3099181-B2)      The apparatus comprises a voltage-correcting storage battery connected in parallel to each of several storage battery cells. A storage battery cell selector selects an arbitrary storage battery cell. A switching device constitutes a circuit for charge transfer between a selected storage battery cell and the voltage-correcting storage battery.    A controller controls the switching operation of the switching device. The storage battery cell group constitutes a storage battery of electric double layer type. The electrostatic capacitance value of the voltage-correcting storage battery is small compared with the electrostatic capacitance value of the storage battery cells.    ADVANTAGE -   Obviates voltage differences due to performance variations among individual storage battery cells to increase working voltage range while improving durability of storage battery as whole.