As the market demand for energy storage systems grows, large-capacity lithium iron phosphate (LFP) energy storage batteries are gaining popularity in electrochemical energy storage applications. Studying the capacity attenuation rules of these batteries under different conditions is crucial. This study establishes a one-dimensional lumped parameter model of a single lithium-ion battery to obtain its electrical characteristics. Simulation results demonstrate that the lumped parameter model can accurately simulate battery characteristics while disregarding factors like battery material and size, striking a balance between speed and accuracy. Based on this model, a semi-empirical and semi-physical capacity decay model, considering calendar life and cycle life, is developed. Key aging parameters necessary for the model are fitted based on a small amount of measured lithium-ion battery aging data, enabling the prediction of aging patterns of LFP batteries.
Modeling of capacity attenuation of large capacity lithium iron phosphate batteries
10.10.2024
579783 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Tracking inhomogeneity in high-capacity lithium iron phosphate batteries
Online Contents | 2015
|On-board capacity estimation of lithium iron phosphate batteries by means of half-cell curves
Online Contents | 2016
|Research on large capacity, high power Lithium-ion batteries
Kraftfahrwesen | 2009
|Research on Large Capacity, High Power Lithium-ion Batteries
SAE Technical Papers | 2009
|Capacity degradation of lithium rechargeable batteries
Online Contents | 2005
|