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Charging control device, solar power generation system and charging control method

  • US 9,337,682 B2
  • Filed: 11/20/2012
  • Issued: 05/10/2016
  • Est. Priority Date: 11/30/2011
  • Status: Active Grant
First Claim
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1. A charging control device, comprising:

  • a converter configured to take electric power out of an electric power generator that generates electric power, and configured to convert the electric power to a voltage required for charging a storage battery; and

    an adjuster configured to adjust an output voltage output from the converter,whereinthe converter takes electric power out of the electric power generator at two operation points where the electric power can be taken out of the electric power generator with the output voltage adjusted by the adjuster and output from the converter, and charges the storage battery,wherein the two operation points are defined by intersection points between a voltage-current curve of the electric power generator and a curve defined by Ii=a/Vi and a =Vo×

    Io/η

    ,where Ii is an input current input from the electric power generator into the convertor,Vi is an input voltage input from the electric power generator into the converter,Io is an output current of the converter,Vo is the output voltage that is output from the converter, andη

    is a conversion efficiency of the converter,wherein the converter determines the two operation points by scanning the input voltage, andwherein the adjuster adjusts the output voltage in accordance with a voltage difference between the input voltages respectively corresponding to the two operation points.

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