Methods and algorithms of cyclic coulometry
Abstract
Systems, devices, and methods of diagnosing an electrochemical cell using cyclic coulometry are discussed. An exemplary battery diagnostic system comprises a current generator to generate symmetric charge current and discharge current to excite an electrochemical cell, and a cyclic coulometer to evaluate performance of the electrochemical cell. The cyclic coulometer can adjust at least one of a charge time for applying the charge current, or a discharge time for applying the discharge current, to keep a monitored cell voltage toward a specific setpoint. The adjustment of charge or discharge time can be achieved by changing a current switch timing for reversing current from a first to a second current direction. The cyclic coulometer measures one or more electrical parameters during the charge or discharge cycle, and generates a performance metric using the measured electrical parameters.
- Inventors:
- Issue Date:
- Research Org.:
- Xilectric, Inc., Fall River, MA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1892761
- Patent Number(s):
- 11287481
- Application Number:
- 16/432,331
- Assignee:
- Xilectric, Inc., (Fall River, MA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- DOE Contract Number:
- SC0018908
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 06/05/2019
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Weiss, Steven E., Lemay, Charles R., and Ferencz, Andrew. Methods and algorithms of cyclic coulometry. United States: N. p., 2022.
Web.
Weiss, Steven E., Lemay, Charles R., & Ferencz, Andrew. Methods and algorithms of cyclic coulometry. United States.
Weiss, Steven E., Lemay, Charles R., and Ferencz, Andrew. Tue .
"Methods and algorithms of cyclic coulometry". United States. https://www.osti.gov/servlets/purl/1892761.
@article{osti_1892761,
title = {Methods and algorithms of cyclic coulometry},
author = {Weiss, Steven E. and Lemay, Charles R. and Ferencz, Andrew},
abstractNote = {Systems, devices, and methods of diagnosing an electrochemical cell using cyclic coulometry are discussed. An exemplary battery diagnostic system comprises a current generator to generate symmetric charge current and discharge current to excite an electrochemical cell, and a cyclic coulometer to evaluate performance of the electrochemical cell. The cyclic coulometer can adjust at least one of a charge time for applying the charge current, or a discharge time for applying the discharge current, to keep a monitored cell voltage toward a specific setpoint. The adjustment of charge or discharge time can be achieved by changing a current switch timing for reversing current from a first to a second current direction. The cyclic coulometer measures one or more electrical parameters during the charge or discharge cycle, and generates a performance metric using the measured electrical parameters.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {3}
}
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