POWER SOURCE ENABLING AUTOMATIC MEASUREMENT OF SERVICE LIFE, AND METHOD FOR MEASUREMENT OF POWER SOURCE SERVICE LIFE

摘要

PROBLEM TO BE SOLVED: To provide a power source enabling automatic measurement of service life, and a method for measurement of power source service life.SOLUTION: A power source comprises: a temperature detection unit for detecting a temperature of the power source; a ripple voltage detection unit for detecting a ripple voltage of an electrolytic capacitor in the power source; and a processor for obtaining an initial temperature detected when initially using the power source and an initial ripple voltage at the initial temperature, converting the initial ripple voltage into an equivalent ripple voltage at a standard temperature, obtaining an operation temperature detected when the power source actually operates and a ripple voltage at the operation temperature, converting the ripple voltage at the operation temperature into an equivalent ripple voltage at the standard temperature, and determining whether or not the power source reaches the end of its service life by comparing the two equivalent ripple voltages.