VOLTAGE MEASURING APPARATUS OF ASSEMBLED BATTERY

  • US 20100225327A1
  • Filed: 03/01/2010
  • Published: 09/09/2010
  • Est. Priority Date: 03/04/2009
  • Status: Active Grant
First Claim
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1. A voltage measuring apparatus for measuring an output voltage of an assembled battery in which a plurality of unit cells are connected in series and are divided into a plurality of blocks, the voltage measuring apparatus comprising:

  • a block voltage detection unit which detects a voltage of at least one of the plurality of blocks;

    a sampling voltage generation unit which is provided in the block voltage detection unit and generates an analog sampling voltage applied in the sampling voltage generation unit;

    an A/D conversion unit which is provided in the block voltage detection unit and digitizes the analog sampling voltage to output a digital sampling voltage; and

    a voltage variation detection unit which obtains an error ratio of the voltage detected by the block voltage detection unit based on the digital sampling voltage.

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