DEVICE FOR ESITIMATING LIFE TIME OF SECONDARY BATTERY AND METHOD THEREOF

PURPOSE: A device and a method of estimating an acceleration life time for a long-term life prediction of a battery are provided to predict a life time of a normal condition at an evaluated acceleration condition, and to reduce a life evaluation time of a battery simultaneously. CONSTITUTION: A life time evaluation device (100) of a battery comprises an input unit (110) inputted a first battery life time experimental data and a second battery life time experimental data corresponding to each different condition, and a processing unit (120) which is operationally connected to the input unit, which determines one or more parameter from the first battery life time experimental data and the second battery life time experimental data, which determines an acceleration factor intercorrelated with the first battery life time experimental data and the second battery life time experimental data according to one or more parameter, and which predicts a life time expectancy of a battery according to the acceleration factor and the second battery life time experimental data. [Reference numerals] (110) Input unit; (121) Parameter extraction unit; (122) Acceleration factor calculation unit; (123) Normal lifetime prediction unit; (130) Storage unit; (140) Display unit