Patent ID: 8692508
Filing Date: 2014-04-08
Classification: H02J,Y02T

Abstract:
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.