Patents by Inventor Philippe Guillaume

Philippe Guillaume 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).

  • System and method for monitoring battery aging
    Patent number: 5543245
    Abstract: A system for monitoring aging of a battery comprising a plurality of cells connected in series and able to be fully discharged comprises a discharger which discharges one of the previously charged cells at a time to an end of discharge value. The quantity of electricity supplied by each discharged cell during discharging is measured. The quantity of electricity supplied by at least one discharged cell is processed to detect excessive aging of the battery. Excessive aging of the battery results in a residual capacity which is less than a fraction of the nominal capacity of the battery.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: August 6, 1996
    Assignee: Alcatel Converters
    Inventors: Xavier Andrieu, Michel Rocher, Philippe Guillaume, Philippe Poignant