Calendar ageing and health diagnosis of supercapacitor (original) (raw)
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IEEE Transactions on Industrial Electronics, 2000
Due to its capacity to store or supply energy with high power, the supercapacitor is becoming an attractive component. Because of the electrostatic nature of energy storage, the endurance of this component toward repetitive charge and discharge cycles is relatively high. The goal of this paper is to demonstrate that the cycling has an impact on the degradation of the supercapacitor and as a result on its lifetime. Based on accelerated cycling tests, some supercapacitors were studied using a dedicated test bench. Temperature, voltage, and current, that are the parameters which accelerate ageing, are monitored. In fact, observations during cycling tests show an important acceleration of the degradation compared to a similar static test having the same voltage and core temperature but without cycling. This paper proposes a method to quantify the acceleration of ageing during cycling phase.
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
This paper proposes a new experimental investigation of the ageing mechanisms of supercapacitors. Starting from the main ageing mechanisms of these devices reported in the literature, the paper proposes a suitably developed procedure aimed at evaluating their ageing during combined life endurance and power cycling tests. In particular, the effect of the temperature (usually referred as life endurance) is evaluated in supercapacitors solicited with an a-priori defined power cycle. The effects of the temperature during the so-called recovering phase are also investigated. Each experimental finding is discussed by taking into account the phenomenon of the residual charge redistribution inside the supercapacitor electrodes.
Methods of Assessing Degradation of Supercapacitors by Using Various Measurement Techniques
Applied Sciences
This article presents the qualitative analyses of the construction of supercapacitor samples. The analyses are based on the suggested thermographic measurements as well as the technique of testing the inherent noise of the investigated element. The indicated assessment methods have been referred to the currently used parameters for the qualitative evaluation of supercapacitors. The approach described in this paper, which introduces additional parameters assessing worn out of supercapacitors, can be included in the so-called non-invasive measurement methods, which allow the assessment of the condition of the sample under test. This article presents the applied measurement stands and verifies of the applicability of measurement methods in relation to the currently used parameters allowing for the qualitative assessment of supercapacitors. The measurement method presented in this article was used to study prototypes of supercapacitors. The measurement results allow for more accurate ch...
Thermal cycling impacts on supercapacitor performances during calendar ageing
Microelectronics Reliability, 2013
In this paper, we focus on supercapacitors thermal cycling ageing at constant voltage. Obtained results are compared with those issued from calendar ageing at constant voltage and constant temperature. Experimental measurements from periodical characterization tests during calendar ageing up to 7500 h and results of characterization for thermal cycling test up to 2500 h are presented. A model for the supercapacitor performances prediction, in terms of capacitance and resistance evolution with ageing, is proposed and validated. Finally, the impact of the temperature cycling is highlighted and quantified.
Study of Accelerated Aging of Supercapacitors for Transport Applications
IEEE Transactions on Industrial Electronics, 2000
One important part of the electrical transportation systems is the energy storage system. This last can be based, for example, on supercapacitors. We propose in this work to study its behavior under constraints similar to their uses in power and railway traction systems. We define an adequate measurement protocols for accelerated aging which is applied to supercapacitors according to two accelerated factors, effective current and temperature. We model the supercapacitors for different states of health. The modeling gives a good estimation of the variation of electrical parameters of the supercapacitor at different states. We reveal general indicators of supercapacitor's aging and we discuss about its cycle life.
Constant power cycling for accelerated ageing of supercapacitors
2009
This paper deals with the lifetime of supercapacitors used in transportation. Increasing onboard electrical devices require adapted storage elements like supercapacitors to supply all electrical systems. Reliability and lifetime are two major factors for electrical storage system. Based on accelerated ageing, some supercapacitors have been studied using a dedicated test bench. Temperature, voltage, current and power cycling are monitored since supercapacitor ageing are affected by these parameters. An ageing law suitable for a transport application is obtained and discussed.
Prediction of supercapacitors floating ageing with surface electrode interface based ageing law
Microelectronics Reliability, 2014
Supercapacitors (SC) are power devices used as transitory energy sources for peak power applications such as braking energy recovering in hybrid transports. They are subject to electrochemical ageing processes which affect their performances and reliability. Consequently, the main influence factors on SC ageing kinetic are temperature and voltage. Some ageing law based on experiment results have already been produced (for instance the Eyring law) but are not precisely related to physical considerations. In this article, we propose to use an ageing law which links ageing kinetic with the growth of an interface layer between the electrodes surface and electrolyte, called here SEI (Solid Electrode Interface) layer. In order to have a representative sample, 81 commercial supercapacitors coming from 3 different manufacturers will be tested through floating ageing tests at different voltage and temperature constraints. All presented components are manufactured with the most widespread SC technology (double layer SC using activated carbon for electrode and acetonitrile). The fitting of SC experimental ageing results and SEI ageing law is achieved. Then the effect of temperature and voltage on SEI ageing law parameters is performed.
Supercapacitor ageing at constant temperature and constant voltage and thermal shock
Microelectronics Reliability, 2010
This paper presents supercapacitor ageing according to the voltage, the temperature and thermal shock tests. To investigate this effect, a test bench of accelerated supercapacitor calendar ageing was carried out. Experimental tests are realized at constant temperature when the supercapacitors are polarized at the maximum voltage. To quantify the supercapacitor ageing, the equivalent series resistance (ESR) and the equivalent capacitance