BATTERY SYSTEM AND METHOD

A battery system is configured to estimate a presence or absence of deterioration of a battery (20). 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 volta...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUOKA, Shohei, MARUYAMA, Yuko, UCHIDA, Yoshihiro, SUGO, Yuki, TSUJI, Koichi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TESTING
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Beschreibung
Zusammenfassung:	A battery system is configured to estimate a presence or absence of deterioration of a battery (20). 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 (21) and an ECU (40). The voltage sensor (21) detects a voltage value (VV) of the battery (20). The ECU (40) 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 (VV), an evaluation value for evaluating a degree of polarization mitigation after charging or discharging of the battery (20). The estimation process includes a process of estimating the presence or absence of the deterioration in accordance with the evaluation value.