Skip to Content
Find More Like This
Return to Search

SYSTEMS AND RELATED METHODS FOR DETERMINING SELF-DISCHARGE CURRENTS AND INTERNAL SHORTS IN ENERGY STORAGE CELLS

United States Patent Application

20170153290
A1
View the Complete Application at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
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.
SAZHIN, SERGIY V. (IDAHO FALLS, ID), DUFEK, ERIC J. (AMMON, ID), GERING, KEVIN L. (IDAHO FALLS, ID)
14/ 954,446
November 30, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] The invention was made with government support under Contract No. DE-AC07-05-ID14517, awarded by the United States Department of Energy. The government has certain rights in this invention.