MONITOR SIGNAL OUTPUT CIRCUIT, CELL PACK, CELL VOLTAGE MONITOR CIRCUIT, CELL SYSTEM, APPARATUS, CELL VOLTAGE MONITORING METHOD, MEDIUM FOR RECORDING CELL VOLTAGE MONITOR PROGRAM

摘要

PROBLEM TO BE SOLVED: To calculate cell voltage at high accuracy, where errors resulting from the offset value of a differential amplifier used for monitoring the cell voltage is corrected by monitoring the cell voltage and detecting the offset value. SOLUTION: The voltage of each of plural series connected cells or voltage sources and the voltage across each of the plural series connected cells or voltage sources are detected, the offset value of the differential amplifier is obtained through calculation, and the measured value of the cell voltage is corrected, using the offset value obtained.