论文标题
锂离子电池的基于物理和等效电路模型
Bridging physics-based and equivalent circuit models for lithium-ion batteries
论文作者
论文摘要
在本文中，通过传输线路结构呈现了广泛使用的用于锂离子电池模拟的伪两维（P2D）模型的新颖实现。该实现代表物理和等效电路模型之间的相互作用。模拟了不同电流下的NMC-Gaphite锂离子电池的放电过程，并且可以看到电路模型的结果与在Comsol多物理中进行的物理模拟获得的结果非常吻合，包括末端电压和浓度分布。最后，我们证明了电路模型如何有助于对细胞电化学的理解，这是通过各种过程对过电位贡献的分析来体现的。
In this article, a novel implementation of a widely used pseudo-two-dimensional (P2D) model for lithium-ion battery simulation is presented with a transmission line circuit structure. This implementation represents an interplay between physical and equivalent circuit models. The discharge processes of an NMC-graphite lithium-ion battery under different currents are simulated, and it is seen the results from the circuit model agree well with the results obtained from a physical simulation carried out in COMSOL Multiphysics, including both terminal voltage and concentration distributions. Finally we demonstrated how the circuit model can contribute to the understanding of the cell electrochemistry, exemplified by an analysis of the overpotential contributions by various processes.
