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Battery voltage monitoring device

  • US 8,692,508 B2
  • Filed: 04/08/2011
  • Issued: 04/08/2014
  • Est. Priority Date: 04/08/2010
  • Status: Active Grant
First Claim
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1. A battery voltage monitoring device for equalizing cell voltages of a plurality of battery cells electrically connected in series, the plurality of battery cells being grouped into a plurality of blocks, the plurality of blocks being electrically connected in series and each having a same predetermined number of battery cells electrically connected in series, the device comprising:

  • cell-voltage detecting means for detecting cell voltages of the plurality of battery cells; and

    charge-transferring means for performing a direct charge transfer from a first specific battery cell to a second specific battery cell that is second or higher adjacent to the first specific battery cell and has a lower cell voltage than the first specific battery cell on the basis of the cell voltages of the battery cells detected by the cell-voltage detecting means, the first specific battery cell belonging to a first block of the plurality of blocks and the second specific battery cell belonging to a second block of the plurality of blocks that is first or higher adjacent to the first block.

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