摘要：針對鋰電池研究中幾種等效電路模型，確定一種最優的模型。通過理論分析和公式推導，對幾種等效電路模型的比較，然后再通過建模仿真驗證，最終得出鋰電池PNGV等效電路模型，能最精確的表征鋰電池放電過程中任意時刻的動態響應，確定其是最佳模型。鋰電池等效電路模型，將電池的性能與各參數進行聯系，最佳模型的確定有助于對電池各方面研究更加精確。 敘詞：鋰電池/等效電路模型/PNGV/建模仿真 Abstract：Forseveral kinds of equivalent circuit of lithium battery model, determining an optimal model.Compare several equivalent circuit models by theoretical analysis and formula deduction, and then verifying it by modeling and simulation. Eventually determine that lithium batteryPNGVequivalent circuit model is the best due to that it can characterize the dynamic response of arbitrary moment during lithium battery discharge process most accurately.Parameterscontact with the performance of the battery through equivalent circuit model, so determine the best model can help for all aspects of the battery research more precise. Keyword：Lithium battery , Equivalent circuit model , PNGV , Modeling and simulation