Patents by Inventor Sergiy V. Sazhin

Sergiy V. Sazhin 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).

  • Systems and related methods for determining self-discharge currents and internal shorts in energy storage cells
    Patent number: 10036779
    Abstract: Systems and methods for determining self-discharge currents in an energy storage cell and detecting internal shorts are disclosed. A system includes a DC voltage source configured to provide a constant test voltage selected to be less than an open-circuit voltage of an energy storage cell to the energy storage cell. The system also includes a current measuring device operably coupled between the DC voltage source and the energy storage cell, and control circuitry operably coupled to the current measuring device. A method includes applying the constant test voltage, and measuring the test current flowing between the DC voltage source and the energy storage cell until after the test current switches from a negative current to a positive current. The method also includes determining a self-discharge current of the energy storage cell by analyzing the measured test current with computational models that capture physical processes tied to the test methods.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: July 31, 2018
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Sergiy V Sazhin, Eric J Dufek, Kevin L Gering
  • SYSTEMS AND RELATED METHODS FOR DETERMINING SELF-DISCHARGE CURRENTS AND INTERNAL SHORTS IN ENERGY STORAGE CELLS
    Publication number: 20170153290
    Abstract: Systems and methods for determining self-discharge currents in an energy storage cell and detecting internal shorts are disclosed. A system includes a DC voltage source configured to provide a constant test voltage selected to be less than an open-circuit voltage of an energy storage cell to the energy storage cell. The system also includes a current measuring device operably coupled between the DC voltage source and the energy storage cell, and control circuitry operably coupled to the current measuring device. A method includes applying the constant test voltage, and measuring the test current flowing between the DC voltage source and the energy storage cell until after the test current switches from a negative current to a positive current. The method also includes determining a self-discharge current of the energy storage cell by analyzing the measured test current with computational models that capture physical processes tied to the test methods.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 1, 2017
    Inventors: SERGIY V. SAZHIN, ERIC J. DUFEK, KEVIN L. GERING
  • Separators for alkaline electrochemical cells
    Patent number: 7931981
    Abstract: The present invention relates to a high capacity electrochemical cell having a cathode containing an oxide of copper as an active material, as well as an anode, an electrolyte, and separators for use with the cathodes of the invention in an alkaline electrochemical cell.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: April 26, 2011
    Assignee: Rovcal Inc.
    Inventors: David Boone, William C. Bushong, Paul Cheeseman, Gregory J. Davidson, Mario Destephen, Zhihong Jin, Jon Luecke, Erik Mortensen, Ernest Ndzebet, Karthik Ramaswami, Sergiy V. Sazhin, Viet H. Vu