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A Brief Review of Battery Model Parameter Identification Methods

Nowadays the use of batteries as energy storage systems has increased, however, it is essential to manage the stored or released energy to obtain the maximum storage capacity and at the same time extend the lifetime of the battery. Battery management systems control power flow based on load requirements and also on the knowledge of the state of the battery. The state of the battery is determined by variables such as the state of charge, the state of health and the state of operation. However, since they are internal states that can only be estimated from external variables such as the current and voltage of the battery, it is necessary to carry out an identification of the parameters of a given battery based, for example, on an equivalent electrical circuit model or of other type. Model parameters can be obtained using various identification methods. This paper reviews some of the most common methodologies which are found in the specialized literature for the identification of the parameters of the battery model and their main features are compared.