Supercapacitors (SC) are energy storage systems (ESS) which are appreciated in hybrid vehicle. Hybrid vehicles electrical network is based on DC–DC converter which imply HF current ripple. This article proposes through ageing tests exploitation to study the influence of hybrid car HF current ripple on SC ageing (with current ripple of the same order of magnitude and frequency than for hybrid onboard network). Impedance parameter evolution is used to monitor SC state of health. Obtained results show that current ripple has significant effects on SC ageing kinetic and reliability (packaging failures). The packaging failures are linked to overpressure induced by HF current ripple. Finally a new model for SC ageing under current ripple is proposed thanks to electrolyte degradation by an electrical resonance process.
Impact of high frequency current ripple on supercapacitors ageing through floating ageing tests
ESREF, European Symposium on the Reliability of Electron Devices, Failure Physics and Analysis, 24 ; 1643-1647
Microelectronics Reliability ; 53 , 9-11
2013
5 Seiten, 12 Quellen
Aufsatz (Konferenz)
Englisch
Causes of supercapacitors ageing in organic electrolyte
Online Contents | 2008
|Behaviour of consolidated granites under ageing tests
British Library Conference Proceedings | 1996
|Ageing aircraft . Annual census details ageing airliner fleet
Online Contents | 1998
Ageing Aircraft Systems Audit - Fighting the Ageing Process
British Library Conference Proceedings | 2011
|Quench ageing, strain ageing, and cold working of steel
Engineering Index Backfile | 1940
|