STATE DETECTING DEVICE FOR BATTERY FOR STARTING VEHICLE ENGINE, BATTERY AND VEHICLE INCLUDING THE SAME, AND METHOD FOR DETECTING STATE OF BATTERY FOR STARTING VEHICLE ENGINE

PROBLEM TO BE SOLVED: To provide a device and a method for determining the state of a battery, accurately determining an overdischarging alarm by electrical equipment and an overdischarging alarm by dark current of a vehicle by discriminating them from one another in the battery for starting a vehic...

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Bibliographische Detailangaben
Hauptverfasser:	KOIKE KIICHI, KADOUCHI EIJI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PERFORMING OPERATIONS PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TESTING TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a device and a method for determining the state of a battery, accurately determining an overdischarging alarm by electrical equipment and an overdischarging alarm by dark current of a vehicle by discriminating them from one another in the battery for starting a vehicle engine. SOLUTION: The load state in an engine stopped state is estimated by measuring the voltage (Vb) of the battery, and a determination value for notifying the overdischarging alarm is changed according to the estimated load state. Thus, wrong issuance of the overdischarging alarm in spite of not being overdischarging can be prevented. Also, because the cause of overdischarging becomes noticeable to a user, the user is allowed to react according to the cause. COPYRIGHT: (C)2010,JPO&INPIT