Patent ID: 7180267
Filing Date: 2007-02-20
Classification: H02J,Y02T

Abstract:
1. A battery pack capacity adjustment apparatus for a battery pack constituted by connecting in series a plurality of cells comprising: a cell voltage detection device that detects cell voltages at the plurality of cells; a first voltage decision-making device that makes a decision as to whether or not there is any cell with a voltage lower than a predetermined low-voltage decision-making voltage among the cell voltages detected by the cell voltage detection device; a second voltage decision-making unit that makes a decision as to whether or not a voltage value determined based upon the voltages at the individual cells is higher than a predetermined threshold value; and a capacity adjustment decision-making unit that determines that a capacity adjustment for the plurality of cells is necessary if the first voltage decision-making device decides that there is a cell with a voltage lower than the predetermined low-voltage decision-making voltage and the second voltage decision-making unit decides that the voltage value determined based upon the voltages at the individual cells is higher than the predetermined threshold value.