Patents by Inventor Dan Hakan Lennart Olsson

Dan Hakan Lennart Olsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for balancing charges of a plurality of series-connected battery cells
    Patent number: 6437539
    Abstract: A method and device for balancing the charges of a plurality of series-connected battery cells, the device comprising a current dissipative loop connected across the terminals of each battery cell, the voltage across each battery cell being measured, the average value of the measured voltages being determined, the measured voltage being then compared to the average value, and the measured voltage of each battery cell being adjusted to the average value so as to equalize charges of all battery cells.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: August 20, 2002
    Assignee: Agence Spatiale Europeenne
    Inventors: Dan Hakan Lennart Olsson, Geoffrey John Dudley
  • Method and device for balancing charges of a plurality of series-connected battery cells
    Publication number: 20010019256
    Abstract: A method and device for balancing the charges of a plurality of series-connected battery cells, the device comprising a current dissipative loop connected across the terminals of each battery cell, the voltage across each battery cell being measured, the average value of the measured voltages being determined, the measured voltage being then compared to the average value, and the measured voltage of each battery cell being adjusted to the average value so as to equalize charges of all battery cells.
    Type: Application
    Filed: February 27, 2001
    Publication date: September 6, 2001
    Inventors: Dan Hakan Lennart Olsson, Geoffrey John Dudley