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Hybrid energy storage system

  • US 5,916,699 A
  • Filed: 05/13/1997
  • Issued: 06/29/1999
  • Est. Priority Date: 05/13/1997
  • Status: Expired due to Term
First Claim
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1. An energy storage system comprising:

  • a first energy storage device consisting of a battery having an impedance for providing a substantially constant power output;

    a second energy storage device for providing intermittent bursts of high voltage output; and

    a controller responsive to changes in battery impedance, and controlling a switch for electrically coupling said second energy storage device to a load.

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