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Title: Detection of an internal short circuit in a battery

Abstract

An electrical device comprises a battery cell; a pressure sensor for measuring swelling forces of the battery cell, optionally with voltage, temperature and current sensors, and a battery management system including a controller. The controller executes a program to: (i) determine a reference swelling force corresponding to a reference electrical signal received from the pressure sensor at an earlier reference time, (ii) determine a second swelling force corresponding to a second electrical signal received from the pressure sensor at a later second time, and (iii) determine whether a risk of internal short circuit of the battery cell exists by comparing a reference level of the reference electrical signal and a signal representative of the second electrical signal. When the signal representative of the second electrical signal exceeds the reference level of the reference electrical signal by a threshold amount, a risk of internal short circuit of the cell exists.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1893017
Patent Number(s):
11355824
Application Number:
16/410,714
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
DOE Contract Number:  
AR0000269; W56HZV-14-2-0001
Resource Type:
Patent
Resource Relation:
Patent File Date: 05/13/2019
Country of Publication:
United States
Language:
English

Citation Formats

Stefanopoulou, Anna G., Siegel, Jason B., Pannala, Sravan, Less, Gregory B., Cai, Ting, and Zhang, Mingxuan. Detection of an internal short circuit in a battery. United States: N. p., 2022. Web.
Stefanopoulou, Anna G., Siegel, Jason B., Pannala, Sravan, Less, Gregory B., Cai, Ting, & Zhang, Mingxuan. Detection of an internal short circuit in a battery. United States.
Stefanopoulou, Anna G., Siegel, Jason B., Pannala, Sravan, Less, Gregory B., Cai, Ting, and Zhang, Mingxuan. Tue . "Detection of an internal short circuit in a battery". United States. https://www.osti.gov/servlets/purl/1893017.
@article{osti_1893017,
title = {Detection of an internal short circuit in a battery},
author = {Stefanopoulou, Anna G. and Siegel, Jason B. and Pannala, Sravan and Less, Gregory B. and Cai, Ting and Zhang, Mingxuan},
abstractNote = {An electrical device comprises a battery cell; a pressure sensor for measuring swelling forces of the battery cell, optionally with voltage, temperature and current sensors, and a battery management system including a controller. The controller executes a program to: (i) determine a reference swelling force corresponding to a reference electrical signal received from the pressure sensor at an earlier reference time, (ii) determine a second swelling force corresponding to a second electrical signal received from the pressure sensor at a later second time, and (iii) determine whether a risk of internal short circuit of the battery cell exists by comparing a reference level of the reference electrical signal and a signal representative of the second electrical signal. When the signal representative of the second electrical signal exceeds the reference level of the reference electrical signal by a threshold amount, a risk of internal short circuit of the cell exists.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {6}
}

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