Patents by Inventor Zhenhui Yao

Zhenhui Yao 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 system for monitoring an electrical energy storage device
    Patent number: 7982432
    Abstract: An electrical energy storage device is monitored by cyclically applying an electrical load thereto and monitoring voltage and current at transient portions of the cyclically applied electrical load.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: July 19, 2011
    Assignee: GM Global Technology Operations, LLC
    Inventors: Mutasim A. Salman, Zhenhui Yao
  • Method and system for monitoring an electrical energy storage device
    Patent number: 7859225
    Abstract: An electrical energy storage device is monitored by cyclically applying an electrical load thereto and monitoring voltage and current at transient portions of the cyclically applied electrical load.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: December 28, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Mutasim A. Salman, Zhenhui Yao
  • Cranking capability estimation for a vehicular starting system
    Patent number: 7743649
    Abstract: A method is provided for determining a cranking capability of a starting system for an internal combustion engine. An average power output of a battery is determined for the starting system during a start engine cranking interval. A temperature of the starting system is determined at an initiation of the start engine cranking interval. A predetermined average power output capability for a battery having a full state of charge at the determined temperature is looked up. A predetermined minimum average power output required of the battery for starting the respective engine at the determined temperature is looked up. A state of function based on the determined average power outputs is determined. The cranking capability of the starting system is identified in response to the determined state of function.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: June 29, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Mutasim A. Salman, Zhenhui Yao, Nick S. Kapsokavathis, David W. Walters
  • CRANKING CAPABILITY ESTIMATION FOR A VEHICULAR STARTING SYSTEM
    Publication number: 20100154524
    Abstract: A method is provided for determining a cranking capability of a starting system for an internal combustion engine. An average power output of a battery is determined for the starting system during a start engine cranking interval. A temperature of the starting system is determined at an initiation of the start engine cranking interval. A predetermined average power output capability for a battery having a full state of charge at the determined temperature is looked up. A predetermined minimum average power output required of the battery for starting the respective engine at the determined temperature is looked up. A state of function based on the determined average power outputs is determined. The cranking capability of the starting system is identified in response to the determined state of function.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Mutasim A. Salman, Zhenhui Yao, Nick S. Kapsokavathis, David W. Walters
  • Method and article of manufacture for monitoring state of health of an electrical energy storage device
    Patent number: 7567086
    Abstract: There is provided a method and article of manufacture for monitoring an electrical energy storage device for a system. The method comprises stabilizing the electrical energy storage device. Once the device is stabilized, a discrete electrical load is cyclically applied to the electrical energy storage device and state variables of the electrical energy storage device are monitored. A resistance of the electrical energy storage device is determined, and a remaining useful life parameter of the electrical energy storage device is determined based upon the determined resistance.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: July 28, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Mutasim A. Salman, Mark W. Verbrugge, Zhenhui Yao
  • METHOD AND SYSTEM FOR MONITORING AN ELECTRICAL ENERGY STORAGE DEVICE
    Publication number: 20080150541
    Abstract: An electrical energy storage device is monitored by cyclically applying an electrical load thereto and monitoring voltage and current at transient portions of the cyclically applied electrical load.
    Type: Application
    Filed: September 12, 2007
    Publication date: June 26, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Mutasim A. Salman, Zhenhui Yao
  • Method and article of manufacture for monitoring an electrical energy storage device
    Publication number: 20070132456
    Abstract: There is provided a method and article of manufacture for monitoring an electrical energy storage device for a system. The method comprises stabilizing the electrical energy storage device. Once the device is stabilized, a discrete electrical load is cyclically applied to the electrical energy storage device and state variables of the electrical energy storage device are monitored. A resistance of the electrical energy storage device is determined, and a remaining useful life parameter of the electrical energy storage device is determined based upon the determined resistance.
    Type: Application
    Filed: November 21, 2006
    Publication date: June 14, 2007
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Mutasim Salman, Mark Verbrugge, Zhenhui Yao