LIFE ESTIMATION APPARATUS AND METHOD FOR POWER STORAGE DEVICE AND POWER STORAGE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a life estimation apparatus capable of correctly estimating residual life of a power storage element.SOLUTION: A life estimation apparatus 100 estimates residual life which is cumulative residual period of a power storage element 200 and comprises: a relation expression acquisition part 110 for acquiring a relation expression in which an inverse of a resistance value of DC resistance or AC resistance of the power storage element 200 in time point of passing of cumulative use period which is a cumulative value of use period of the power storage element 200 is expressed by a primary function in which a square root of the cumulative use period is a variable number; and a residual life estimation part 120 for estimating residual life of the power storage element 200 by using the acquired relation expression.