Comparison of EV Fast Charging Protocols and Impact of Sinusoidal Half-Wave Fast Charging Methods on Lithium-Ion Cells

dc.contributor.authorAlthurthi, Sai Bhargava
dc.contributor.authorRajashekara, Kaushik
dc.contributor.authorDebnath, Tutan
dc.date.accessioned2024-02-23T15:03:41Z
dc.date.available2024-02-23T15:03:41Z
dc.date.issued2024-02-06
dc.date.updated2024-02-23T15:03:41Z
dc.description.abstractIn electric vehicle fast charging systems, it is important to minimize the effect of fast charging on the grid and it is also important to operate the charging system at high efficiencies. In order to achieve these objectives, in this paper, a sinusoidal half-wave DC current charging protocol and a sinusoidal half-wave pulsed current charging protocol are proposed for the fast charging of Li-ion batteries. A detailed procedure is presented for implementing the following proposed methods: (a) a pre-defined half-sine wave current function and (b) a pulsed half-sine wave current method. Unlike the conventional full-wave sinusoidal ripple current charging protocols, the proposed study does not utilize any sinusoidal full-wave ripple. The performance of these new charging methods on Ni-Co-Al-type Li-cells is studied and compared with the existing constant current and positive pulsed current charging protocols, which have been discussed in the existing literature. In addition, the changes in the electrochemical impedance spectrograph of each cell are examined to study the effects of the applied charging methods on the internal resistance of the Li cell. Finally, the test results are presented for 250 life cycles of charging at 2C (C: charging rate) and the degradation in cell capacities are compared among the four different methods for the Ni-Co-Al-type Li cell.
dc.identifierdoi: 10.3390/wevj15020054
dc.identifier.citationWorld Electric Vehicle Journal 15 (2): 54 (2024)
dc.identifier.urihttps://hdl.handle.net/10657/16292
dc.titleComparison of EV Fast Charging Protocols and Impact of Sinusoidal Half-Wave Fast Charging Methods on Lithium-Ion Cells

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