BATTERY PACK AND CHARGING CONTROL METHOD THEREFOR

A battery pack includes: a charging voltage detector for detecting charging voltage applied to charging path; a charging first transistor disposed in series on the charging path for controlling charging current flowing through the charging path; a charging second transistor for controlling operation...

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Bibliographische Detailangaben
Hauptverfasser:	TANIGUCHI, Keitaro, WATANABE, Ryoji
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A battery pack includes: a charging voltage detector for detecting charging voltage applied to charging path; a charging first transistor disposed in series on the charging path for controlling charging current flowing through the charging path; a charging second transistor for controlling operation of the charging first transistor; and a controller for controlling operation of the charging first transistor and the charging second transistor. Based on the charging current detected by a charging current detector and the charging voltage detected by the charging voltage detector, the controller can adjust the charging current for charging the battery block, by controlling second ON resistance that is ON resistance of the charging second transistor in a linear region of the charging second transistor, and by controlling first ON resistance that is ON resistance of the charging first transistor in a linear region of the charging first transistor using the second ON resistance.