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Energy storage

  • US 20060255765A1
  • Filed: 04/29/2004
  • Published: 11/16/2006
  • Est. Priority Date: 05/22/2003
  • Status: Abandoned Application
First Claim
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1. An arrangement for storing electrical energy comprising:

  • an electric charge source operable to produce a DC-system voltage between a first terminal and a second terminal, a plurality of electrical storage modules connected in series between the first terminal and the second terminal, each electric storage module having a respective nominal module voltage;

    a DC-to-DC converter coupled to the electric charge source and to each of the electrical storage modules, the DC-to-DC converter being operable to receive incoming power from the electric charge source and to deliver a respective voltage fraction of the DC-system voltage to each of the modules wherein the DC-to-DC converter is operable to control each of the voltage fractions to vary each fraction over time within a voltage interval around the respective nominal module voltage of each module.

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