Design of testing method based on parameters of EIS model

Lithium-ion battery impedance measurement using high-precision measuring instruments we have done, which spend much time on testing and cost high on equipments. In this paper, the studying on the lithium-ion battery, we analysis that the parameters of battery impedance model has a relation with the performance and state of battery, propose a simple detection method of internal resistance and ohm internal resistance. Using equivalent circuit method and through the constant phase angle element Q to simplify, we achieve the detection of DC excitation, Experimental results show the feasibility of the method.