Abstract
This chapter introduces the Nernst model as well as its improvement. The state-space equation of the established model is constructed and its parameters are identified. The model is tested to analyze the model effect. The typical electrochemical models include the Shepherd model and the Nernst model. The empirical equation of the model is mainly constructed by analyzing the internal physical mechanism and the electrochemical reaction against the battery. The model building process is analyzed for its improvement. Then, the parameter identification is conducted for its accurate state-space description. As for the model realization purpose, the simulation model is constructed for the accurate battery characteristic description as well as the testing procedure design. The hybrid pulse-power characteristic test is conducted with a detailed experimental procedure design, according to which the curve fitting treatment is also conducted for the accurate mathematical state-space description. The character test is conducted, which is also used for the modeling effect verification.
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