Apparatus for estimating residual battery capacity, system for estimating residual battery capacity, battery pack, and method for estimating residual battery capacity

An apparatus for estimating a residual capacity of a storage battery including an electrode whose stage structure is changed based on a state of includes a current monitor configured to monitor a current value flowing in the storage battery; a voltage monitor configured to monitor a voltage value of...

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Bibliographische Detailangaben
1. Verfasser:	Tamegai, Yoichi
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TESTING
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Beschreibung
Zusammenfassung:	An apparatus for estimating a residual capacity of a storage battery including an electrode whose stage structure is changed based on a state of includes a current monitor configured to monitor a current value flowing in the storage battery; a voltage monitor configured to monitor a voltage value of the storage battery; a Coulomb counter configured to integrate the current value monitored by the current monitor; a differentiation circuit configured to detect a differential value of the voltage value monitored by the voltage monitor; a reset detecting circuit configured to reset an accumulated error due to current integration of the Coulomb counter using an inflection point of the differential value detected by the differentiation circuit; and a residual capacity estimating part configured to estimate a residual capacity of the storage battery based on a value of the Coulomb counter.