The evolution of battery management systems has imposed the necessity of evaluating batteries equivalent circuit models. The advantage of this type of modeling is to accurately estimate the dynamic aspects of a battery. Circuit parameters are identified for the purpose of forecasting different battery states. This paper presents multiple circuit models described in the literature. Four types of batteries are studied: Nickel-Metal Hybrid, Lithium-Ion, Lead-acid and Lithium Polymer.
In this paper, various charging techniques for Lithium-Ion (Li-Ion) batteries will be discussed. The theory of the methods along with their fundamental principles, mathematical model, block diagrams, and methods of implementation will be mentioned. Each implementation method will be explained and studied. A comparative discussion between the below mentioned charging techniques will be mentioned in order to identify which one of these methods is acceptable to be adopted in commercial battery chargers.I.
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