Patents by Inventor Yunfei Luan

Yunfei Luan 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 and apparatus for controlling vehicle battery charging
    Patent number: 7834582
    Abstract: An electrical charging strategy and system for a high voltage electrical energy storage system able to supply electrical energy to a hybrid vehicle is disclosed. The system charges the electrical energy storage system so state-of-charge at the end of a trip is substantially unchanged. The strategy and system employs opportunity charging to achieve maximum energy efficiency of the hybrid system, thus minimizing fuel consumption and maximizing fuel economy. The charging system operation is controlled, based upon: the state-of-charge of the electrical energy storage system, and, the operating efficiency of the internal combustion engine. Battery life is likewise extended through use of this strategy.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: November 16, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Yunfei Luan, Damon R. Frisch, Chihsiung Lo, Goro Tamai
  • Method and apparatus for controlling vehicle battery charging
    Publication number: 20070262749
    Abstract: An electrical charging strategy and system for a high voltage electrical energy storage system able to supply electrical energy to a hybrid vehicle is disclosed. The system charges the electrical energy storage system so state-of-charge at the end of a trip is substantially unchanged. The strategy and system employs opportunity charging to achieve maximum energy efficiency of the hybrid system, thus minimizing fuel consumption and maximizing fuel economy. The charging system operation is controlled, based upon: the state-of-charge of the electrical energy storage system, and, the operating efficiency of the internal combustion engine. Battery life is likewise extended through use of this strategy.
    Type: Application
    Filed: May 11, 2006
    Publication date: November 15, 2007
    Inventors: Yunfei Luan, Damon Frisch, Chihsiung Lo, Goro Tamai