Reliability and Lifetime Assessment of Batteries and Power Converters under EV Fast Charging Strategies
IEEE Transactions on Transportation Electrification, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1109/tte.2026.3722476
- Dergi Adı: IEEE Transactions on Transportation Electrification
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Anahtar Kelimeler: battery aging, electric vehicle charging system, electric vehicles, fast charging strategies, Li-ion battery, reliability, thermal model
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
The global transition towards electric mobility has notably increased the demand for fast electric vehicle charging systems (EVCS). However, fast charging may accelerate lithium-ion battery (LIB) degradation due to chemical reactions such as lithium plating, and also at the same time increase the thermal stress in power converters. Therefore, this paper investigates the reliability of DC-DC converters used in fast EVCS and experimentally determines the lifetime of LIBs under various fast-charging profiles. A dual-active-bridge (DAB) converter prototype was developed and tested in the laboratory to estimate its lifetime as well, and several charging profiles were experimentally analyzed to determine the capacity fade of LIB cells. Furthermore, a lifetime-aware joint assessment of the DC-DC converters and LIBs is performed using a weighted sum evaluation framework. The results obtained showed that an optimized five-stage constant current (5SCC) charging profile can significantly reduce LIB degradation compared to equivalent constant current constant voltage (CCCV) charging methods. However, 5SCC charging profiles exhibited intermediate power converter lifetimes, positioned between the best-performing 2C CC charging profile and the worst-performing 4C CC charging profile. This work provides valuable insights into the design of sustainable and efficient EVCS-LIB systems, offering practical guidance for optimizing and extending the system lifetime and reducing operational costs over time in electric mobility applications.