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An accurate parameter estimation becomes one of most important goals of modern battery management systems in electrical vehicles and smart grids. Actually, only state of the charge is used to analyse the battery conditions. However, information about internal resistance and capacity as well as open circuit voltage allows optimizing the battery operation mode either while charging or discharging and...
Monitoring the condition of battery is beneficial for many applications. Internal impedance of the battery can be used to monitor battery health. The power converter for interfacing the battery bank, can be used to measure battery impedance instead of using any dedicated commercial equipment, thus reducing system cost significantly. However, the power converter has some additional requirements in...
A brief overview of the various equivalent battery models will be reviewed, a model will be decided upon in which it will be used to depict internal characteristics of the battery. These characteristics will be correlated to the state of charge of the battery. In this paper, a review of how to obtain the internal parametric of the alkaline batteries will be explained utilizing electrical spectroscopy...
The state of charge (SoC) of Li-ion coin batteries is investigated as a function of impedance variation. Batteries are submitted to highly stressed conditions to simulate the operation of active loads and impedance is measured in real time both for charge and discharge. In particular, modulus and phase dependence as a function of SoC is studied with impedance spectroscopy in the range 40 Hz to 20...
The application of the fractional calculus for modeling electrochemical double layer capacitors is a novel way to get simpler and precise models. This paper provides a summarized report of several models of Electrochemical Double Layer Capacitors (EDLC). From classical models based on simple structures composed by networks of passive elements (RLC), to models which involve the fractional behavior...
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