Method for estimating the capacity of power groups of batteries using advanced techniques of forecasting model of cell.

摘要

Method for estimating the capacity of power groups of batteries using advanced techniques of forecasting model of the cell.The present invention relates to a method and an apparatus for estimating the power of the loading and unloading of applications with batteries.Including groups of batteries used in hybrid electric vehicles (veh) and electric vehicles (EV).An estimation method of power load / unload incorporates design requirements such as voltage, state of charge (EOC), power and current.And it works for a time horizon of prediction 30 t specified by the user.At least two cell models are used in the calculation of the maximum power of loading / unloading based on a voltage range.The first is a model of simple cell which uses a Taylor series expansion to linearize the equation involved.The second is a model more complex and accurate models the dynamics of the cell in the form of state space of discrete.The model of the cell can include entries such as temperature, resistance, capacity, etc.An advantage of using the model-based approach is that the model can be used in Kalman filtering to produce the EDC as the estimation of the maximum current charge / discharge based onIn a voltage range.