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EV & Battery Systems · Free resource

EV Powertrain & Pack Modeling Checklist

From cell model to vehicle energy estimate — Simulink/MATLAB discipline, drive cycles, and the assumptions that break range claims.

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1. Model structure

Cell ECM / electrochemical model order justified for the use case
Pack scaling (series resistance, interconnect losses) explicit
Thermal model coupled or clearly scoped out with risk noted
Units and sign conventions (charge current) locked across files

2. Powertrain coupling

Inverter / motor efficiency maps sourced — not constant 95% fantasy
Auxiliary loads (HVAC, DC-DC, pumps) included in range runs
Regen limits respect BMS charge acceptance and ABS / vehicle constraints
Solar / auxiliary charge paths modeled if claimed in the product

3. Scenarios & evidence

Standard drive cycles plus your real route profiles both run
Sensitivity: ±10% mass, CdA, and temperature impact reported
Model vs. dyno / road error band stated — never a single “exact km”
Versioned model + data package reproducible by a second engineer

4. Product handoff

Assumptions sheet shipped with every range / power claim
Charging curve (CC-CV / CPC) matches BMS firmware limits
Safety: thermal runaway / abuse cases owned by hardware, not “TBD”
Next experiment listed to shrink the largest uncertainty

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