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Open AccessArticle

Lithium-Ion Cell Fault Detection by Single-Point Impedance Diagnostic and Degradation Mechanism Validation for Series-Wired Batteries Cycled at 0 °C

1
U.S. Naval Research Laboratory, Washington, DC 20375, USA
2
Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96815, USA
3
Maxim Integrated, San Jose, CA 95134, USA
4
Pine Research Instruments, Durham, NC 27705, USA
*
Authors to whom correspondence should be addressed.
Energies 2018, 11(4), 834; https://doi.org/10.3390/en11040834
Received: 1 March 2018 / Revised: 30 March 2018 / Accepted: 2 April 2018 / Published: 4 April 2018
(This article belongs to the Section Energy Storage and Application)
The utility of a single-point impedance-based technique to monitor the state-of-health of a pack of four 18650 lithium-ion cells wired in series (4S) was demonstrated in a previous publication. This work broadens the applicability of the single-point monitoring technique to identify temperature induced faults within 4S packs at 0 °C by two distinct discharge cut-off thresholds: individual cell cut-off and pack voltage cut-off. The results show how the single-point technique applied to a 4S pack can identify cell faults induced by low temperature degradation when plotted on a unique state-of-health map. Cell degradation is validated through an extensive incremental capacity technique to quantify capacity loss due to low temperature cycling and investigate the underpinnings of cell failure. View Full-Text
Keywords: lithium-ion battery; impedance spectroscopy; low temperature; battery pack; diagnostic; cell degradation lithium-ion battery; impedance spectroscopy; low temperature; battery pack; diagnostic; cell degradation
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Love, C.T.; Dubarry, M.; Reshetenko, T.; Devie, A.; Spinner, N.; Swider-Lyons, K.E.; Rocheleau, R. Lithium-Ion Cell Fault Detection by Single-Point Impedance Diagnostic and Degradation Mechanism Validation for Series-Wired Batteries Cycled at 0 °C. Energies 2018, 11, 834.

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