System and method for performing ultracapacitor cell balancing

A circuit for balancing a sub-stack voltage in a stack of ultracapacitors includes a pair of electrical leads that are connectable across a first sub-stack of one or more ultracapacitors, wherein a stack includes N sub-stacks of ultracapacitors coupled to an electrical bus, a discharge device switch...

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Bibliographische Detailangaben
1. Verfasser:	ZUERCHER JOSEPH CHARLES
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 EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SYSTEMS FOR STORING ELECTRIC ENERGY TESTING
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Beschreibung
Zusammenfassung:	A circuit for balancing a sub-stack voltage in a stack of ultracapacitors includes a pair of electrical leads that are connectable across a first sub-stack of one or more ultracapacitors, wherein a stack includes N sub-stacks of ultracapacitors coupled to an electrical bus, a discharge device switchably connectable with the pair of electrical leads, the discharge device configured to discharge the sub-stack of ultracapacitors, a voltage sensing circuit coupled to the electrical bus and configured to sense and output a voltage of the stack of ultracapacitors after the first sub-stack of one or more ultracapacitors has been discharged to a given threshold, and a voltage amplifier coupled to the output of the voltage sensing circuit and coupled to the pair of electrical leads, the voltage amplifier configured to provide a re-charge voltage to the first sub-stack of one or more ultracapacitors.