PyBaMM

Example

Use in Lemonergy

Specify phase, direction and boundaries.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Connected concepts

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

Aging model

A model that predicts capacity fade and resistance growth as functions of time, temperature, SOC and throughput. Empirical models fit power laws and Arrhenius terms to test data; physics-based models simulate the SEI, plating and cracking mechanisms themselves.

Newman model

The standard physics-based lithium-ion cell model: porous-electrode theory across the cell thickness, with solid diffusion solved in a representative spherical particle at every point — hence pseudo-two-dimensional. It predicts voltage from first principles but needs dozens of parameters.

Parameterisation

Measuring or fitting the numbers a model needs: OCV curves, diffusion coefficients, exchange current densities, thicknesses and porosities for a physics model, or resistances and time constants for a circuit model. It is usually most of the modelling effort.

Single-particle model

A simplified physics model that represents each electrode as one spherical particle and neglects electrolyte gradients. It runs fast enough for a BMS and is accurate at low to moderate currents.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

1. Modeling of Galvanostatic Charge and Discharge of the Lithium/Polymer/Insertion Cell

   Marc Doyle, Thomas F. Fuller, John Newman · Journal of The Electrochemical Society · 1993

   Topic background · Porous-electrode transport and insertion-cell modeling; foundational work rather than a specification for a particular commercial cell.

2. Quantities, Units and Symbols in Physical Chemistry, 3rd edition, 2nd printing

   IUPAC · 2011

   Topic background · Physical-chemistry notation, thermodynamics, electrochemistry and transport quantities.