Correction device and correction method for secondary batteries connected in series

摘要

A correction device for secondary batteries comprises a voltage difference detection circuit for detecting variation in terminal voltages of at least two secondary batteries connected in series, and a discharge circuit for discharging one of the at least two secondary batteries which has a maximum terminal voltage, when the variation in the terminal voltages exceeds a preset value. The discharge circuit stops discharging when the terminal voltage of the one of the secondary batteries which is discharged becomes lower than a reference value.