Patents by Inventor Laurent Gajewski

Laurent Gajewski 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 for estimating the ageing of a battery
    Patent number: 10684329
    Abstract: A method for estimating the ageing of a battery powering an electrical system. A set of data about the voltage and current across the battery terminals, in response to the current perturbations provoked during the normal operation of the battery by the changes of consumption rate of the electrical system are stored. The impedance of the battery, within a predetermined frequency interval, from the voltage and current data is determined. The age of the battery as a function of the impedance is estimated by comparing the impedance with a previously stored model of evolution of this impedance with ageing.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: June 16, 2020
    Assignees: AIRBUS DEFENCE AND SPACE SAS, CENTRE NATIONAL D'ETUDES SPATIALES CNES
    Inventors: Laurent Gajewski, Pierre-Louis Taberna, Patrice Simon
  • METHOD FOR ESTIMATING THE AGEING OF A BATTERY
    Publication number: 20150226812
    Abstract: A method for estimating the ageing of a battery powering an electrical system. A set of data about the voltage and current across the battery terminals, in response to the current perturbations provoked during the normal operation of the battery by the changes of consumption rate of the electrical system are stored. The impedance of the battery, within a predetermined frequency interval, from the voltage and current data is determined. The age of the battery as a function of the impedance is estimated by comparing the impedance with a previously stored model of evolution of this impedance with ageing.
    Type: Application
    Filed: August 9, 2013
    Publication date: August 13, 2015
    Inventors: Laurent Gajewski, Pierre-Louis Taberna, Patrice Simon