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Sensors 2016, 16(9), 1394; doi:10.3390/s16091394

Internal and External Temperature Monitoring of a Li-Ion Battery with Fiber Bragg Grating Sensors

1
Department of Physics & I3N, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
2
Helmholtz Institute Ulm (HIU) Electrochemistry I, Helmholtzstraße 11, 89081 Ulm, Germany and Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karsruhe, Germany
3
Instituto de Telecomunicações and I3N, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
4
Instituto de Telecomunicações and Department of Physics & I3N, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
5
Instituto de Telecomunicações and Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
6
Instituto de Telecomunicações, Campus de Santiago, 3810-193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Gangbing Song
Received: 22 July 2016 / Revised: 22 August 2016 / Accepted: 23 August 2016 / Published: 30 August 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [2519 KB, uploaded 13 September 2016]   |  

Abstract

The integration of fiber Bragg grating (FBG) sensors in lithium-ion cells for in-situ and in-operando temperature monitoring is presented herein. The measuring of internal and external temperature variations was performed through four FBG sensors during galvanostatic cycling at C-rates ranging from 1C to 8C. The FBG sensors were placed both outside and inside the cell, located in the center of the electrochemically active area and at the tab-electrode connection. The internal sensors recorded temperature variations of 4.0 ± 0.1 °C at 5C and 4.7 ± 0.1 °C at 8C at the center of the active area, and 3.9 ± 0.1 °C at 5C and 4.0 ± 0.1 °C at 8C at the tab-electrode connection, respectively. This study is intended to contribute to detection of a temperature gradient in real time inside a cell, which can determine possible damage in the battery performance when it operates under normal and abnormal operating conditions, as well as to demonstrate the technical feasibility of the integration of in-operando microsensors inside Li-ion cells. View Full-Text
Keywords: Embedded sensors; Li-ion batteries; temperature monitoring; performance; safety Embedded sensors; Li-ion batteries; temperature monitoring; performance; safety
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Novais, S.; Nascimento, M.; Grande, L.; Domingues, M.F.; Antunes, P.; Alberto, N.; Leitão, C.; Oliveira, R.; Koch, S.; Kim, G.T.; Passerini, S.; Pinto, J. Internal and External Temperature Monitoring of a Li-Ion Battery with Fiber Bragg Grating Sensors. Sensors 2016, 16, 1394.

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