SECONDARY BATTERY STATE DETECTION DEVICE AND SECONDARY BATTERY STATE DETECTION METHOD

[Problem] Accurately detecting a full charge of a secondary battery even in cases in which a voltage generated by an alternator changes.[Solution] A secondary battery state detection device 1 for detecting the state of a secondary battery includes at least one processor (CPU 10a) and at least one me...

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Bibliographische Detailangaben
Hauptverfasser:	HIGUCHI, Atsuhito, IWANE, Noriyasu
Format:	Patent
Sprache:	eng ; fre ; ger
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 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 VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	[Problem] Accurately detecting a full charge of a secondary battery even in cases in which a voltage generated by an alternator changes.[Solution] A secondary battery state detection device 1 for detecting the state of a secondary battery includes at least one processor (CPU 10a) and at least one memory (ROM 10b, RAM 10c) that is communicably connected to the at least one processor. The at least one processor reads a set of instructions stored in the at least one memory, and executes detection process in which a charging voltage is detected, the charging voltage being generated when an alternator that generates an adjustable voltage charges the secondary battery; computation process in which a charging resistance is calculated as an internal resistance of the secondary battery when the alternator charges the secondary battery; and estimation processing in which a state of charge of the secondary battery is estimated on the basis of the charging voltage detected by the detection process and on the charging resistance calculated by the computation process.