Patents by Inventor Eckhard Karden

Eckhard Karden 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).

  • BATTERY IDENTIFICATION CYCLE
    Publication number: 20100019727
    Abstract: The present invention relates to a method and a device for detecting the operating state of a vehicle battery. A method according to the invention has the following steps: charging of the battery from a first state of charge (SOC1) to a second state of charge (SOC2), wherein the second state of charge (SOC2) is higher than the first state of charge (SOC1); active discharging of the battery to a third state of charge (SOC3), wherein the third state of charge (SOC3) is lower than the second state of charge (SOC2); and determination of at least one variable, which is characteristic of the operating state of the battery, after the third state of charge (SOC3) has been reached.
    Type: Application
    Filed: July 24, 2009
    Publication date: January 28, 2010
    Inventors: Eckhard Karden, Stephen Robert Pickering, Erik Surewaard, Engbert Spijker, Ralf Hecke
  • Method and device for determining the charge of a battery
    Patent number: 7541814
    Abstract: A method and device for determining the charge of a battery, characterized in that a gain crossover frequency (f±) for an impedance of the battery excited by an alternating current signal is established, and the gain crossover frequency (f±) is assigned to the charge of the battery, whereby the gain crossover frequency (f±) is a frequency of the alternating current signal at which an imaginary portion of the impedance of the battery vanishes.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: June 2, 2009
    Assignee: Rheinische Landschaftspflege Jakob Voets INg. Grad. GmbH & Co. KG
    Inventors: Rik W. De Doncker, Abderrezak Hammouche, Eckhard Karden, Birger Fricke
  • Method and device for determining the charge of a battery
    Publication number: 20070090843
    Abstract: A method and device for determining the charge of a battery, characterized in that a gain crossover frequency (f±) for an impedance of the battery excited by an alternating current signal is established, and the gain crossover frequency (f±) is assigned to the charge of the battery, whereby the gain crossover frequency (f±) is a frequency of the alternating current signal at which an imaginary portion of the impedance of the battery vanishes.
    Type: Application
    Filed: September 24, 2004
    Publication date: April 26, 2007
    Inventors: Rik De Doncker, Abderrezak Hammouche, Eckhard Karden, Birger Fricke