Proposal: Lumped-Parameter Models for LIB and LMB

[whileman133]

Description

I work in Dr. Gregory Plett's group at the University of Colorado Colorado Springs where we use lumped-parameter models of LIB¹ and LMB² since they are suitable for parameter estimation from cell-level V/I/T measurements without cell teardown.

Recently, we've developed PyBaMM models for these lumped formulations. I thought I'd ask whether the PyBaMM team thinks these could be useful to incorporate into the project, and if so, how the contribution might fit.

Presently, our models are class-based and extend pybamm.BaseModel. I have them organized within a lumped package with the following modules:

• base.py - defines a base class for lumped-parameter models
• libcell.py - defines lumped-parameter models for LIB cells
• lmbcell.py - defines lumped-parameter models for LMB cells

Any input is welcome.

Motivation

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Possible Implementation

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Additional context

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Footnotes

1. Plett, Gregory L., and M. Scott Trimboli. Battery Management Systems, Volume III: Physics-Based Methods. Vol. 3. Artech House, 2024. ↩

2. Hileman, Wesley A., M. Scott Trimboli, and Gregory L. Plett. "Estimating the Values of the PDE Model Parameters of Rechargeable Lithium-Metal Battery Cells Using Linear Electrochemical Impedance Spectroscopy." ASME Letters in Dynamic Systems and Control 4, no. 4 (2024): 041009. ↩