Power storage element lifespan estimation device and lifespan estimation method and power storage system

• Main Authors: TAO YOHEI, YAMATE SHIGEKI
• Format: Patent
• Language: Chinese; English
• Published: 27.04.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

A lifespan estimation device (100) for estimating a remaining lifespan, which is the remaining cumulative period over which a power storage element (200) can be used, said lifespan estimation device (100) being provided with: a relational expression acquisition unit (110) for acquiring a relational expression in which the resistance value of a DC resistance or AC resistance of the power storage element (200) at a cumulative elapsed use period, which is the cumulative period of use of the power storage element (200), is expressed using an expression including the terms of a cubic or higher function or an exponential function of the cumulative use period; and a remaining lifespan estimation unit (120) for estimating the remaining lifespan of the power storage element (200) using the acquired relational expression.