POWER MANAGEMENT DEVICE AND POWER FEEDING SYSTEM

A power management device includes: a first determination unit that determines whether or not an execution condition for executing cell balancing for equalizing states of charge of a plurality of battery cells included in a storage battery connected to a direct current (DC) bus via a converter is sa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	UTO, Hisakazu, MITSUNAGA, Takuma, SUZUKI, Shingo, NAOI, Katsuo, ICHI, Masao
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 power management device includes: a first determination unit that determines whether or not an execution condition for executing cell balancing for equalizing states of charge of a plurality of battery cells included in a storage battery connected to a direct current (DC) bus via a converter is satisfied; and a control unit that performs cell balancing execution control for causing a battery management device managing the storage battery to execute the cell balancing when the execution condition is satisfied. The control unit changes a target voltage of the converter so that a state of charge of the storage battery becomes a state in which the battery management device starts the cell balancing in the cell balancing execution control.