LIFE EXPECTANCY DETERMINATION DEVICE FOR STATIONARY STORAGE BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a life expectancy determination device capable of estimating the life expectancy of a stationary storage battery by a simple method.SOLUTION: A life expectancy determination method of a stationary storage battery includes: a detection section for detecting an evaluation value for evaluating the deteriorated state of a stationary storage battery; a first storage section for storing the use history of the stationary storage battery until then; a second storage section for storing life expectancy information associated with the use information of the stationary storage battery; a third storage section for storing the life expectancy basic information of the stationary storage battery; and a controller for estimating the life expectancy of the stationary storage battery from the use history until then stored in the first storage section, the evaluation value, and the corresponding life expectancy information.