| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery state estimation device that can accurately estimate an amount of precipitation of a reaction participation substance (for example, metal such as lithium and like) in a secondary battery (for example, a lithium ion battery and the like) separately for an active component (for example, active lithium) and for an inert component (for example, inert lithium).SOLUTION: A model formula and a parameter which correspond to a deactivation reaction of a precipitated reaction participation substance (for example, metal such as lithium and the like) with an electrolytic solution are added to a battery model formula used in a state estimation of a secondary battery, and thereby an amount of precipitation of the reaction participation substance in the secondary battery is accurately estimated separately for an active component (for example, active lithium) and for an inert component (for example, inert lithium). |
