Simulation method of lead acid battery-based improved PNGV model

The invention discloses a simulation method of a lead acid battery-based improved PNGV model. The operating characteristic of a lead acid battery serving as an energy storage component is described by an equivalent circuit; the equivalent circuit connects two RC parallel branches in series to replace a single RC parallel circuit in the traditional PNGV equivalent model circuit. The improved PNGV model adopting the two RC parallel branches can simulate the dynamic change process of each operating parameter during short-time charging/discharging of the battery well. Due to capacity modification, the model can simulate the change condition of the capacity of the battery under different working conditions, a researcher can find the battery with overlow capacity in time, and the cycle life of the battery can be predicted under different working conditions.