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Experimental modal analysis of lithium-ion pouch cells
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Hooper, James Michael and Marco, James (2015) Experimental modal analysis of lithium-ion pouch cells. Journal of Power Sources, Volume 286 . pp. 247-259. doi:10.1016/j.jpowsour.2015.03.098
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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2015.03.098
Abstract
If future electric and hybrid electric vehicle batteries are to be designed such that the impact of vibration induced resonance is minimized, engineers tasked with the design of the vehicle’s energy storage system must have a rigorous understanding of key system attributes such as the natural frequencies of the cell, the level of damping present and the mode shapes induced within the battery under mechanical load. This paper describes the underpinning theory and experimental method employed when using the impulse excitation technique to quantify the natural frequencies and mode shapes of a commercially available 25 Ah Nickel Manganese Cobalt Oxide (NMC) Laminate Pouch Cell. Experimental results are presented for fifteen cells at five different values of state of charge (SOC). The results indicate that irrespective of the energy content within the cell, the same four modes of vibration (torsion and bending) exist within a frequency range of 191 Hz – 360 Hz. This is above the frequency range (0 - 150 Hz) typically associated with road-induced vibration. The results also indicate that the cell’s natural frequencies of vibration and damping do not vary with changing values of SOC.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TL Motor vehicles. Aeronautics. Astronautics |
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Automobiles -- Vibration, Electric vehicles, Hybrid electric vehicles, Electric batteries -- Testing, Active noise and vibration control | ||||||||||||
| Journal or Publication Title: | Journal of Power Sources | ||||||||||||
| Publisher: | Elsevier S.A. | ||||||||||||
| ISSN: | 0378-7753 | ||||||||||||
| Official Date: | 1 July 2015 | ||||||||||||
| Dates: |
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| Volume: | Volume 286 | ||||||||||||
| Number of Pages: | 13 | ||||||||||||
| Page Range: | pp. 247-259 | ||||||||||||
| DOI: | 10.1016/j.jpowsour.2015.03.098 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Open Access | ||||||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Innovate UK, Jaguar PLC | ||||||||||||
| Grant number: | EP/I01585X/1 (EPSRC) |
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