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Title: Strain measurement based battery testing

A method and system for strain-based estimation of the state of health of a battery, from an initial state to an aged state, is provided. A strain gauge is applied to the battery. A first strain measurement is performed on the battery, using the strain gauge, at a selected charge capacity of the battery and at the initial state of the battery. A second strain measurement is performed on the battery, using the strain gauge, at the selected charge capacity of the battery and at the aged state of the battery. The capacity degradation of the battery is estimated as the difference between the first and second strain measurements divided by the first strain measurement.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1358222
Assignee:
SOUTHWEST RESEARCH INSTITUTE ARPA-E
Patent Number(s):
9,660,299
Application Number:
14/102,197
Contract Number:
AR0000277
Resource Relation:
Patent File Date: 2013 Dec 10
Research Org:
SOUTHWEST RESEARCH INSTITUTE, San Antonio, TX (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Other works cited in this record:

Strain gages for determining charge of a battery having a thin walled pressure vessel
patent, June 2002

Method and system for joint battery state and parameter estimation
patent, September 2009

Arrangement and Method for Monitoring Pressure within a Battery Cell
patent-application, April 2008

System and Method for Estimating a State of a Battery Pack
patent-application, November 2012

MECHANICAL MEASUREMENT OF STATE OF HEALTH AND STATE OF CHARGE FOR INTERCALATION BATTERIES
patent-application, April 2014

Electronic Device and Methods Therein
patent-application, December 2014

Method For Monitoring/Managing Electrochemical Energy Device By Detecting Intercalation Stage Changes
patent-application, October 2015

APPARATUS FOR CONTROLLING TEMPERATURE OF BATTERY
patent-application, October 2015

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