BATTERY DETERIORATION JUDGEMENT DEVICE

PROBLEM TO BE SOLVED: To provide a battery deterioration judgement device in which a battery deterioration degree can be detected precisely in an economical and vehicle-mountable structure. SOLUTION: A discharging current of a battery is controlled in two stages (I1→I2). As a result, after a termina...

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Bibliographic Details
Main Author SHOJI AKIRA
Format Patent
LanguageEnglish
Published 06.03.2008
Subjects
BASIC ELECTRIC ELEMENTS
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES
ELECTRICITY
ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
TRANSPORTING
VEHICLES IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a battery deterioration judgement device in which a battery deterioration degree can be detected precisely in an economical and vehicle-mountable structure. SOLUTION: A discharging current of a battery is controlled in two stages (I1→I2). As a result, after a terminal voltage VBAT of the battery decreases toward a polarization voltage, it increases but can be turned to decrease again. And at a time of t2 when the VBAT becomes the same at a time time t1, the VBAT is measured. COPYRIGHT: (C)2008,JPO&INPIT
Bibliography:Application Number: JP20060229813