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Embedded Fiber Optic Sensors for In Situ and In-Operando Monitoring of Advanced Batteries

Published online by Cambridge University Press:  11 May 2015

Julian Schwartz ,
Kyle Arakaki ,
Peter Kiesel ,
Ajay Raghavan ,
Wilko Sommer ,
Alexander Lochbaum ,
Anurag Ganguli ,
Alex Hegyi ,
Bhaskar Saha  and
Chang-Jun Bae
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Julian Schwartz
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Kyle Arakaki
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Peter Kiesel
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Ajay Raghavan
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Wilko Sommer
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Alexander Lochbaum
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Anurag Ganguli
Affiliation:
LG Chem Research, Yuseong-gu, Daejeon, Korea.
Alex Hegyi
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Bhaskar Saha
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
Chang-Jun Bae
Affiliation:
Palo Alto Research Center (PARC, a Xerox Company), Palo Alto, CA 94304, U.S.A.
HoeJin Hah
Affiliation:
LG Chem Research, Yuseong-gu, Daejeon, Korea.
ChaeAh Kim
Affiliation:
LG Chem Research, Yuseong-gu, Daejeon, Korea.
Mohamed Alamgir
Affiliation:
LG Chem Power, Troy, MI 48083, U.S.A.
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Abstract

Our team is developing an optically-based smart monitoring system prototype targeting batteries for advanced battery applications such as hybrid and electric vehicles (EVs). The system concept envisions fiber optic (FO) sensors embedded within Lithium (Li)-ion batteries to measure parameters indicative of cell state in conjunction with our low-cost, compact optical wavelength-shift detection technology and intelligent algorithms to enable effective real-time performance management and optimized battery design. Towards these goals, we have successfully made functional prototypes of Li-ion pouch cells with FO sensors embedded within the electrode stack during cell fabrication. The strong, interesting signals from these FO sensors obtained over charge-discharge cycles offer valuable information and features to enable more accurate cell state-of-charge (SOC) and state-of-health (SOH) estimation, and better understand cell electrochemical and aging processes. This paper presents initial results from these prototype cells and compares the results from internal FO signals to earlier results reported by our team on purely external configurations where the FO sensors were attached to the cell skin.

Keywords

energy storagefiberoptical
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1740: Symposium Z – Materials Challenges for Energy Storage across Multiple Scales , 2015 , mrsf14-1740-z01-08
Copyright
Copyright © Materials Research Society 2015 

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References

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