Determination of li-ion battery degradation mechanisms at high c-rate charging
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CitationMurashko, K. Li, D. Danilov, D. Notten, PHL. Pyrhonen, J. Jokiniemi, J. (2019). Determination of li-ion battery degradation mechanisms at high c-rate charging. 2019 IEEE Vehicle Power and Propulsion Conference, VPPC 2019 - Proceedings, 2019, 1-6. 10.1109/VPPC46532.2019.8952302.
A modification of the differential voltage analysis method is developed. It allows determination of the degradation mechanisms during charging of Li-ion batteries. A constant current (CC) with relatively high C-rate can be used in the analysis method. The modification of the differential voltage analysis method is based on measuring the heat generated during CC charging of Li-ion batteries. The advantages and the applicability of the presented modified differential voltage analysis (MDVA) method are verified by a comparison with currently existing and proven methods used in determining the Li-ion battery degradation mechanisms.