METHOD FOR MEASURING CHARGING VOLTAGE OF BATTERY AND APPARATUS FOR METHOD THEREOF

摘要

PURPOSE: A method for measuring charging voltage of battery and apparatus for performing the method is provided to prevent an error operation by determining a current charging voltage value based on a variation of a charging voltage detected in a previous uniform period. CONSTITUTION: An analog/digital converter(110) detects a charging voltage of a battery and generates digital charging data. A first register(210) temporarily stores the digital charging data generated in the analog/digital converter(110). A subtracter(230) receives one or more digital charging data stored in the first register(210) and generates difference voltage data between adjacent periods. A second register(220) receives the difference voltage data from the subtracter(230). An arithmetic mean unit receives the difference voltage data and generates arithmetic mean value data. A first adder(410) receives one or more difference voltage data and adds difference voltage data. A second adder(510) adds the arithmetic mean data and digital charging date during a previous period and generates current charging data.