Abstract
This repository contains the thermodynamic simulation data and PyBaMM execution scripts validating a novel solid-state Integrated Thermal Management System (ITMS) for megawatt-class electric vehicle charging (SAE J3400) and NMC 811 battery architectures.
The system replaces traditional passive liquid-cooling barriers with an active, solid-state exergy recovery cascade. The architecture utilizes a Nanocrystalline Diamond (NCD) thermal highway (k = 2000 W/mK) electrically isolated by an ultra-thin Hafnium Oxide (HfO2) high-k dielectric shield. Waste heat (I-squared-R losses) from the connector pins and battery core is stripped via rapid phonon conduction and funneled into a Bismuth Telluride (Bi2Te3) thermoelectric generator (TEG) array, converting the Delta T into 12V DC power to offset parasitic auxiliary load.
The attached notebook empirically proves that an active boundary heat transfer coefficient of 5000 W/m2K successfully flatlines core cell temperatures during extreme high-amperage transients (simulated US06 performance drive cycles) and prevents irreversible thermal runaway under 5C overcharge conditions.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Recommended Citation
Schramm, Daniel, "PyBaMM Thermodynamic Validation of a Solid-State Nanocrystalline Exergy Loop for High-Voltage EV Architectures", Technical Disclosure Commons, (September 29, 2026)
https://www.tdcommons.org/dpubs_series/11890