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
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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