BATTERY SYSTEM, ESTIMATION METHOD OF INTERNAL RESISTANCE OF LITHIUM ION SECONDARY BATTERY

PROBLEM TO BE SOLVED: To solve such a problem of a lithium ion secondary battery using a two-phase coexistence positive electrode active material, that the resistance (internal resistance) of the secondary battery changes depending on the electrification state of current and immediately before.SOLUT...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	GOTO SATORU, NISHIDE YUKIMASA
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To solve such a problem of a lithium ion secondary battery using a two-phase coexistence positive electrode active material, that the resistance (internal resistance) of the secondary battery changes depending on the electrification state of current and immediately before.SOLUTION: A battery system has a lithium ion secondary battery (11) using a two-phase coexistence positive electrode active material, and a controller (40) for estimating the internal resistance of the lithium ion secondary battery. When the SOC of the lithium ion secondary battery falls within a SOC range of two-phase coexistence state, the controller estimates the internal resistance when the electrification state of current and immediately before does not change higher than the internal resistance when the electrification state of current and immediately before changes between the state of charge and the state of discharge.