Patent ID: 8525486

Claim:
A power converter comprising a power converting unit that is connected to an electric-power storage device to which a plurality of electric-power storage elements are connected and performs electric charge/discharge to and from the electric-power storage device, and a power conversion controller that controls an operation of the power converting unit, wherein the power conversion controller includes: a correction-value calculating unit that calculates a correction value or a correction coefficient from a first voltage value detected by a first voltage detector that detects a voltage at a connection point between the power converting unit and the electric-power storage device and from a second voltage value detected by a second voltage detector that is incorporated in the electric-power storage device and detects a voltage in a cell unit or a module unit in each of the electric-power storage elements and having higher precision than that of the first voltage value and having a late response; and a corrected-voltage calculating unit that calculates a corrected voltage value obtained by correcting the first voltage value by the correction value or the correction coefficient, a control of the power converting unit is performed based on the corrected voltage value, and the power converter has a configuration of performing constant-voltage electric charge to the electric-power storage device.