Patent ID: 8306781
Filing Date: 2012-11-06
Classification: G01R

Abstract:
1. A professional diagnosis method of battery performance analysis comprising the steps of: measuring parameters of a battery set with two or more batteries by a measuring device, the parameters including maximum voltage of each battery in an equalized charge period, minimum voltage of each battery in an equalized charge period, float voltage dispersion ratio of a single battery, float voltage dispersion ratio of the battery set, battery conductance at end of a discharge r(i), voltage of each battery at end of a short-term discharge, voltage difference and temperature of each battery during a short-term charge and discharge; then inputting the parameters to an artificial neural network including a computer which calculates and outputs predicted battery performance and gives relevant operating advices; wherein said float voltage dispersion ration of a single battery is calculated by equation (3): the float voltage dispersion ratio of the battery set is calculated by equation (4): where: U n: sample period; μ μ num: the number of battery set; ΔU ΔU