Systems and related methods for determining self-discharge currents and internal shorts in energy storage cells
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.
- Inventors:
- Issue Date:
- Research Org.:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1464607
- Patent Number(s):
- 10036779
- Application Number:
- 14/954,446
- Assignee:
- Battelle Energy Alliance, LLC (Idaho Falls, ID)
- Patent Classifications (CPCs):
-
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- DOE Contract Number:
- AC07-05ID14517
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2015 Nov 30
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE
Citation Formats
Sazhin, Sergiy V., Dufek, Eric J., and Gering, Kevin L. Systems and related methods for determining self-discharge currents and internal shorts in energy storage cells. United States: N. p., 2018.
Web.
Sazhin, Sergiy V., Dufek, Eric J., & Gering, Kevin L. Systems and related methods for determining self-discharge currents and internal shorts in energy storage cells. United States.
Sazhin, Sergiy V., Dufek, Eric J., and Gering, Kevin L. Tue .
"Systems and related methods for determining self-discharge currents and internal shorts in energy storage cells". United States. https://www.osti.gov/servlets/purl/1464607.
@article{osti_1464607,
title = {Systems and related methods for determining self-discharge currents and internal shorts in energy storage cells},
author = {Sazhin, Sergiy V. and Dufek, Eric J. and Gering, Kevin L.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {7}
}