×

DC-DC Converter

  • US 20080129117A1
  • Filed: 05/12/2005
  • Published: 06/05/2008
  • Est. Priority Date: 05/12/2005
  • Status: Active Grant
First Claim
Patent Images

1. A DC-DC converter using, as an input source, a fuel cell, solar cell, or the like, having a relatively large output impedance in a power-supply mode, wherein the DC-DC converter includes an output to an arbitrary load and an output to a secondary battery, in which the outputs are wound around a winding, and based on magnetic coupling in which a turn ratio between the outputs determines voltage values of the outputs;

  • a second converter is connected between an output of the secondary battery and the load; and

    a current control circuit connected to the secondary battery is configured to perform control so that, when a current in the load decreases due to an operation of the magnetic coupling, by increasing a charging current which flows into the secondary battery, and, when the current in the load increases, by decreasing the charging current to the secondary battery, an output voltage of the secondary battery is maintained at a set drooping voltage.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×