Comparative ageing study of CC-CV fast charging for commercial 18650 Li-ion cells: impact of environmental temperature
| Autor: | Jean-Michel Vinassa, Cyril Martin, Romain Mathieu, Olivier Briat, Philippe Gyan |
|---|---|
| Přispěvatelé: | FAVRE, Isabelle, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Technocentre Renault [Guyancourt], RENAULT |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Work (thermodynamics)
Materials science [SPI] Engineering Sciences [physics] 020209 energy Nuclear engineering 02 engineering and technology 021001 nanoscience & nanotechnology Durability [SPI.TRON] Engineering Sciences [physics]/Electronics [SPI.TRON]Engineering Sciences [physics]/Electronics Power (physics) Ion [SPI]Engineering Sciences [physics] Environmental temperature Ageing 0202 electrical engineering electronic engineering information engineering Degradation (geology) Current (fluid) 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Proceedings of IEEE Vehicle Power and Propulsion Conference (VPPC) Proceedings of IEEE Vehicle Power and Propulsion Conference (VPPC), Oct 2019, Hanoi, Vietnam |
| Popis: | This work presents first results of an on-going investigation on three commercial 18650 li-ion cell references. Accelerated cycle ageing tests are performed at recommended fast charge current in commercial specifications and at three temperatures (5, 25 and 45 °C). First experimental results reveal that the impact of recommended fast charging current varies significantly between different cell reference and environmental temperature. In general, cells with higher energy density show reduced cycle life under fast charging, in contrast with high power cells. Moreover, the temperature condition at which degradation is minimal varies from one cell reference to the other. These observations suggest that optimized charging protocols and thermal management, specific to each cell reference, can better the trade-off between charging time and durability. |
| Databáze: | OpenAIRE |
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