| 摘要 |
PURPOSE: A method for predicting vehicle battery state is provided to predict the battery state accurately by applying an algorithm capable of obtaining numerical solution of a two-dimensional model using a finite element method. CONSTITUTION: Operation factors and reaction speed factors are inputted to a calculation part respectively as input elements. The operation factors includes physical and chemical factors of a battery, a shape factor of the battery, an operation current and temperature of the battery. Battery SoC(State of Charge) is calculated by performing mathematical modeling using the input elements and at the same time calculating temporal change of the battery SoC on the basis of the mathematical modeling. [Reference numerals] (AA) Start; (BB) Charging/discharging mode select; (CC) SOC calculation; (DD) Electrode charge conservation equation; (EE) Ion mass conservation equations; (FF) Electrolyte charge conservation equation; (GG) Momentum conservation equation; (HH) Electrochemical reaction equation; (II) Porosity change equation; (JJ) Charging state equation |
