Nowadays, the pollutant emissions reduction and the increase in the renewable energy share are key points for a sustainable development. In addition to the industrial and civil sectors, transportation has a crucial role still representing around 25% of the whole green-house gas emission. Despite the electrification of the automotive sector is increasing, several challenges need to be overtaken in order to extend the use of electric sources to the aviation sector, thus requiring investigation on both electrical and mechanical behavior of energy storage devices. This paper presents a preliminary analysis of the state of health (SoH) for 3Ah lithium battery cells operating in vibration stress conditions. The effect of different shaking frequencies applied to the radial and the longitudinal battery axes are investigated. Moreover, both short-term and long-term (aging) tests are conducted. The results showed that no significant effect on capacity fade can be observed. However, a slightly different capacity, calculated for charge and discharge processes, was observed under vibrating tests, thus suggesting that mechanical vibrations can possibly interact with the ion-transfer mechanism.
Analysis of SoH for lithium battery cells operating under vibration stress
Caposciutti G.;Bandini G.;Marracci M.;Buffi A.;Tellini B.
2020-01-01
Abstract
Nowadays, the pollutant emissions reduction and the increase in the renewable energy share are key points for a sustainable development. In addition to the industrial and civil sectors, transportation has a crucial role still representing around 25% of the whole green-house gas emission. Despite the electrification of the automotive sector is increasing, several challenges need to be overtaken in order to extend the use of electric sources to the aviation sector, thus requiring investigation on both electrical and mechanical behavior of energy storage devices. This paper presents a preliminary analysis of the state of health (SoH) for 3Ah lithium battery cells operating in vibration stress conditions. The effect of different shaking frequencies applied to the radial and the longitudinal battery axes are investigated. Moreover, both short-term and long-term (aging) tests are conducted. The results showed that no significant effect on capacity fade can be observed. However, a slightly different capacity, calculated for charge and discharge processes, was observed under vibrating tests, thus suggesting that mechanical vibrations can possibly interact with the ion-transfer mechanism.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
