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Voltage stabilization apparatus

  • US 9,688,149 B2
  • Filed: 02/20/2012
  • Issued: 06/27/2017
  • Est. Priority Date: 02/22/2011
  • Status: Active Grant
First Claim
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1. A voltage stabilization apparatus (1) for a motor vehicle electrical system for stabilizing at least one voltage-sensitive consumer (9), comprising:

  • an energy source (11) for powering the motor vehicle electrical system;

    a DC/DC converter circuit (3) electrically coupled with the energy source (11);

    an energy storage device (5) electrically coupled in series with the energy source (11); and

    a changeover switch (7) that in a first state electrically couples the at least one voltage-sensitive consumer (9) to the energy source (11) and electrically decouples the at least one voltage sensitive consumer (9) from the DC/DC converter circuit (3) and the energy storage device (5), and in a second state where the voltage provided by the energy source (11) drops electrically couples the at least one voltage sensitive consumer (9) to both the DC/DC converter circuit (3) and the energy storage device (5) such that both the energy storage device (5) and the energy source (11) provide power to the at least one voltage-sensitive consumer (9) in the second state.

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