FHM model in PyBaMM?

[fred4ets]

Hi there,

Has anyone here heard of the FHM model?

"What if the Doyle-Fuller-Newman model fails? A new macroscale modeling framework"
Harikesh Arunachalam, Member IEEE and Simona Onori, Senior Member, IEEE.

[valentinsulzer]

I haven't but it should be easy to test implementing this model in PyBaMM syntax. Just copy this script and edit accordingly https://github.com/pybamm-team/PyBaMM/blob/develop/pybamm/models/full_battery_models/lithium_ion/basic_dfn.py

[fred4ets]

Ok, thanks for the prompt answer.

I'll give it a try asap.

[salman-qadir]

Hi @fred4ets fred4ets have you done this or doing this ?

[Michael-Pegis]

I thought I would chime in.....

Its unclear to me what exactly the benefits/assumptions that are fundamentally distinct between FHM and a DFN model where ELY transport properties (thermodynamic factor, [Li]-dependent diffusivity/conductivity).

The author states that

". It must be noted in the FHM model that both the
electrolyte mass and charge conservation equations consist
of the electrolyte concentration and potential variables"

But aside from the main table highlighting additional terms in the mass conservation equation that relate to the electrolyte potential, I can't really see any obvious differences.

So its unclear whether this paper and a 1D FHM is a dig on "DFN" or a dig on the Brueggemann relationship for spherical particles. As far as I can tell, there isn't anyone stopping you to define effective transport parameters from measured tortuosity/porosity.

But Valentin probably knows better than me here

[brosaplanella]

They also seem to define the diffusion in the electrodes alng x rather than along r (i.e. on the macroscale rather than on the microscale).