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An experimental modal analysis of an Lithium-ion Battery using Dynamic Excitation

Koricherla, Manindra Varma
http://rave.ohiolink.edu/etdc/view?acc_num=akron1502476407014686

Abstract Details

2017, Master of Science, University of Akron, Mechanical Engineering.
While foundational work on lithium-based batteries started in 1912, the 1980’s provided substantial progress in the development of the lithium-ion battery and the commercialization as early as the 2000s. The lithium-ion battery was developed into various sizes, from a small penny size to batteries for large scale usage. Every sized battery has its own usage for different purposes. The most widely used sector of lithium-ion batteries is the automobile industry; making rapid progress into introducing vehicles with zero emissions by using non-fossil fuel energy. The usage of lithium-ion battery has many advantages as well as disadvantages. With automobiles, there are many problems arising in order maintain the batteries. These include problems due to absorption of vehicle vibration by the battery alter the performance of the battery. There are few research and innovative works to tackle the problems that are faced by the battery during its usage in the automobile, especially in hybrid electric vehicles and electric vehicles. During operation, batteries and the battery casing are exposed to significant vibration in the vehicles. Research on how vibration impacts the battery and battery cases offer insight into performance optimization. Current research efforts include producing the most efficient battery that produces and handle heavy power loading and unloading, battery handling systems that carry the battery by absorbing road induced vibrations, heat distribution systems that dissipate the heat produced while that battery is working, and determining the most appropriate placement for the battery. Exponential progress in the area of battery management system in vehicles in the last decade resulted in promising progress towards producing more energy efficient cars. The work presented in this thesis is made through the experimental investigation of the lithium-ion batteries that undergo vibration in two different boundary conditions. To quantify the nature of the lithium-ion battery, a commercially available aftermarket battery used to be mounted on a shaker. The test apparatus equipment to hold the battery was designed and fabricated. The battery was clamped to a plate in to configurations; clamped on two sides and clamped on three sides. An experiment analysis was carried out utilizing a laser scanning vibrometer and included a modal investigation with FRFs and extracted mode shapes. The experimental data is compared with the computational data that was investigated using the COMSOL - a multi-physics software. As the result of the research effort, it can be concluded that the repeated vibration to the battery did not affect the state-of-charge and the physical condition would not alter the performance of the battery as after each test the voltage of the battery was measured and there is no change in the voltage. The frequency at which the each mode shapes occurred were constant throughout. The frequency, however varied with the different boundary condition investigated. The first mode shape in the first boundary condition is around 460-480 Hz, the first mode in the second boundary condition is around 306-312 Hz. The results imply that the change in the boundary condition will significantly change natural frequency of the battery
Nicholas Garafolo (Advisor)
Siamak Farhad (Advisor)
Scott Sawyer (Committee Member)
115 p.
Mechanical Engineering

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Citations

  • Koricherla, M. V. (2017). An experimental modal analysis of an Lithium-ion Battery using Dynamic Excitation [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1502476407014686

    APA Style (7th edition)

  • Koricherla, Manindra Varma. An experimental modal analysis of an Lithium-ion Battery using Dynamic Excitation. 2017. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1502476407014686.

    MLA Style (8th edition)

  • Koricherla, Manindra Varma. "An experimental modal analysis of an Lithium-ion Battery using Dynamic Excitation." Master's thesis, University of Akron, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1502476407014686

    Chicago Manual of Style (17th edition)

akron1502476407014686
223
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This open access ETD is published by University of Akron and OhioLINK.