In a control device for a secondary battery, the secondary battery includes a monitoring sensor that detects battery information. An electronic control unit is configured to store first information. The electronic control unit is configured to set a lower-limit state of charge. The electronic control unit is configured to calculate a value of a rate of decrease of a full charging capacity using a value of the full charging capacity and to calculate a value of a state-of-charge variation using the value of the rate of decrease of the full charging capacity and the first information. The electronic control unit is configured to increase the lower-limit state of charge when the value of the state-of-charge variation is greater than a threshold value and to maintain the lower-limit state of charge when the value of the state-of-charge variation is less than the threshold value.
Control device for secondary battery, control method of secondary battery, battery system, and motor-driven vehicle
02.03.2021
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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