Model Identification of Power Lithium-Ion Battery Based on Laplace Transform

Abstract:

In allusion to nonlinear characteristic of power lithium-ion battery, presented a method for identifying of power lithium-ion battery based on Laplace transform. First, analyzed the characteristics of the equivalent circuit model of power lithium-ion battery, determined the model of second-order RC equivalent circuit; Second, established equation of second-order RC equivalent circuit and conducted a Laplace transform; Third,using the massive data of charge-discharge test,model parameters was identified by least-squares method; Simulation results show that the method can effectively identify the equivalent model parameters, and model parameters small error.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 775-779
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.775
• Online since: June 2014
• Authors: En Guang Hou, Xin Qiao, Guang Min Liu
• Keywords: Laplace Transform, Least-Square Method (LSM), Parameter Identification, Power Lithium-Ion Battery, Second-Order Rc Equivalent Circuit

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