Method and device for establishing lithium battery topological structure database of electrochemical impedance spectroscopy

The invention discloses a lithium battery topological structure database establishment method and device based on an electrochemical impedance spectroscopy, and the method comprises the steps: measuring the electrochemical impedance spectroscopy of a to-be-measured lithium battery module; performing NOvA software simulation based on the electrochemical impedance spectroscopy to obtain simulation data; and comparing the error between the simulation data and the measured electrochemical impedance spectrum, determining that a standard is met when the error is smaller than a preset threshold value, incorporating the simulation data meeting the standard and the topological structure of the lithium battery into a database, and constructing an electrochemical impedance spectrum database of the lithium battery module. According to the method, battery data are extracted by using an electrochemical impedance spectroscopy method, databases of different battery topological structures are constructed based on data simulat