Patents by Inventor Brad Schoeff

Brad Schoeff 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).

  • Vehicular battery temperature estimation
    Patent number: 6902319
    Abstract: A method of estimating an internal temperature of a vehicle battery is based on heat transfer between a heat source and the battery. In addition to the heat source, airflow generated by vehicle movement and radiator fans affects the internal temperature of the battery. The method estimates an initial internal temperature of the battery at engine startup based on how long the engine was off. The temperature of the heat source is determined. A transfer function is determined to represent the effect of the airflow. The method updates a current internal temperature of the battery based on the initial internal temperature and an integration of the transfer function and the heat source temperature.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: June 7, 2005
    Assignee: DaimlerChrysler Corporation
    Inventors: Zhijian James Wu, Jyh-Laing L. Lin, Dean Marshall, Brad Schoeff, Michel Trumbo, John G Hatfield, James Karlet, Yijun Tu
  • Vehicular battery temperature estimation
    Publication number: 20050074048
    Abstract: A method of estimating an internal temperature of a vehicle battery is based on heat transfer between a heat source and the battery. In addition to the heat source, airflow generated by vehicle movement and radiator fans affects the internal temperature of the battery. The method estimates an initial internal temperature of the battery at engine startup based on how long the engine was off. The temperature of the heat source is determined. A transfer function is determined to represent the effect of the airflow. The method updates a current internal temperature of the battery based on the initial internal temperature and an integration of the transfer function and the heat source temperature.
    Type: Application
    Filed: January 8, 2004
    Publication date: April 7, 2005
    Inventors: Zhijian Wu, Jyh-Laing Lin, Dean Marshall, Brad Schoeff, Michel Trumbo, John Hatfield, James Karlet, Yijun Tu