BATTERY SYSTEM AND METHOD

A battery system is configured to estimate a presence or absence of deterioration of a battery. This deterioration is a phenomenon in which an internal resistance of the secondary battery increases due to uneven ion concentration in a non-aqueous electrolyte. The battery system includes a voltage se...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUOKA, Shohei, MARUYAMA, Yuko, UCHIDA, Yoshihiro, SUGO, Yuki, TSUJI, Koichi
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PERFORMING OPERATIONS PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY TESTING TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A battery system is configured to estimate a presence or absence of deterioration of a battery. This deterioration is a phenomenon in which an internal resistance of the secondary battery increases due to uneven ion concentration in a non-aqueous electrolyte. The battery system includes a voltage sensor and an ECU. The voltage sensor detects a voltage value of the battery. The ECU is configured to perform a calculation process and an estimation process. The calculation process includes a process of calculating, in accordance with the voltage value, an evaluation value for evaluating a degree of polarization mitigation after charging or discharging of the battery. The estimation process includes a process of estimating the presence or absence of the deterioration in accordance with the evaluation value.