BALANCING CIRCUIT OF ENERGY STORAGE ELEMENT

PROBLEM TO BE SOLVED: To provide a balancing circuit of energy storage elements capable of miniaturizing the balancing circuit by reducing the number of semiconductor switching elements and diodes, when voltages of a plurality of energy storage elements connected in series are equalized with low los...

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Bibliographische Detailangaben
Hauptverfasser:	KOMATSUGI KAZUNARI, FUJIMOTO HISASHI, YODA KAZUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE 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:	PROBLEM TO BE SOLVED: To provide a balancing circuit of energy storage elements capable of miniaturizing the balancing circuit by reducing the number of semiconductor switching elements and diodes, when voltages of a plurality of energy storage elements connected in series are equalized with low loss. SOLUTION: In the balancing circuit of the energy storage elements, the semiconductor switching elements SW1-SW4 and diodes D1-D4, which are connected in the reverse parallel to the semiconductor switching elements SW1-SW4, are connected in parallel to the energy storage elements C1-C4, and inductors L1-L3 are connected between the connection points of the energy storage elements C1-C4 and those of the semiconductor switching elements SW1-SW4. An average voltage Vaveof all the energy storage elements C1-C4 connected in series and a voltage of each of the energy storage elements are compared to turn on the switching element connected in parallel to the energy storage elements having a voltage higher than the average voltage Vave. COPYRIGHT: (C)2010,JPO&INPIT