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Verfahren und Vorrichtung zum Ladungsaustausch zwischen einer Vielzahl von in Reihe geschalteten Energiespeichern oder -wandlern

Device for charge transfer between a large number of energy stores or converters switched in series
 
: Schmidt, H.; Jantsch, M.

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Frontpage ()

DE 1994-4422409 A: 19940629
DE 1994-4422409 A: 19940629
EP 1995-921708 A: 19950614
EP 1995-921708 AW: 19950614
WO 1995-DE793 A: 19950614
DE 4422409 C2: 19960711
EP 767983 B1: 19990901
H02J0007
H02M0003
German
Patent, Electronic Publication
Fraunhofer ISE ()

Abstract
The invention relates to a process and device for charge transfer between a large number of identical energy stores (1) switched in series, whereby at least one electrical store (3) cuts in cycle alternately in parallel to the energy stores (1). Thereby, each electrical store (3) is formed from one transformer element (3) charged by the energy stores (1). The transformer elements (3) are switched at the mentioned cycle with alternating polarity in parallel to one of the identical energy stores (1) in such a way that all the identical energy stores (1) in each cycle step are switched singly in parallel to a transformer element (3), whereby a direct power flow is possible from one of the qualitatively good stores (1) to a store (3) with lower charge voltage. The process and the device can also be used for energy converters, e.g. in the form of fuel cells, for charge equalization purposes.

: http://publica.fraunhofer.de/documents/PX-38550.html