Patents by Inventor Andreas Schell

Andreas Schell 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).

  • Bidirectional DC/DC converter with a step-up mode in one direction and a step-down mode in the other direction
    Patent number: 6205035
    Abstract: A DC/DC converter which can be operated alternately as a step-up converter in a first direction of energy flow and as a step-down converter in a second direction of energy flow is disclosed. Potential isolation between the low-voltage side and the high-voltage side of the converter is achieved by a magnetic compound unit, which has not only a transformer function but also an energy store function. The converter operates as a push-pull converter in both directions of energy flow. The DC/DC converter can be used for example in motor vehicles with an electric drive fed by fuel cells.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: March 20, 2001
    Assignees: Ascom Energy Systems AG, DaimlerChrysler AG
    Inventors: Ludwig Vollmer, Andreas Schell, Helmut Lorenz