[PROBLEM] To estimate a second deterioration component included in a deterioration state of a secondary battery. [SOLVING MEANS] An estimation apparatus of estimating a deterioration state of a secondary battery has a current sensor measuring an electric current of the secondary battery, a current estimating section estimating the electric current of the secondary battery by using a battery model, and a deterioration estimating section estimating a second deterioration component produced in association with a salt concentration imbalance in the secondary battery. The deterioration estimating section estimates the second deterioration component by using the measured current obtained from the current sensor, the estimated current obtained from the current estimating section, and a first deterioration component produced in association with wear of the secondary battery. The deterioration estimating section corrects the estimated current by using a ratio between a resistance change rate of the secondary battery when the second deterioration component is eliminated and a resistance change rate during charge and discharge of the secondary battery.
DEVICE FOR ESTIMATING STATE OF DETERIORATION OF SECONDARY BATTERY AND METHOD FOR ESTIMATING STATE OF DETERIORATION
VORRICHTUNG ZUR SCHÄTZUNG DES VERSCHLEISSZUSTANDS EINER SEKUNDÄRBATTERIE UND VERFAHREN ZUR SCHÄTZUNG DES VERSCHLEISSZUSTANDS
DISPOSITIF ET PROCÉDÉ D'ESTIMATION DE L'ÉTAT DE DÉTÉRIORATION D'UNE BATTERIE SECONDAIRE
2016-07-20
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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