According to an embodiment, a battery life estimation method includes: calculating, for a secondary battery, battery characteristic data at a present time including at least an internal resistance value; storing use condition data including a temperature time distribution and a current value time distribution during an estimation period and a degradation characteristic map representing a distribution of degradation constants with respect to battery voltages and temperatures; and estimating a degradation amount by integrating residence times on a battery voltage temperature plane in the degradation characteristic map based on the battery characteristic data at the present time and the use condition data.
BATTERY LIFE ESTIMATION METHOD AND BATTERY LIFE ESTIMATION APPARATUS
2016-01-14
Patent
Elektronische Ressource
Englisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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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