Research question and engineering context
Model possible thermal runaway propagation between neighbouring 18650 lithium-ion cells while examining heat-transfer paths, trigger assumptions and safety-mitigation sensitivities.
Understand how heat release and thermal coupling could affect the sequence and time scale of neighbouring-cell temperature rises under a stated runaway initiation scenario.
Model construction sequence
- 1. Represent individual cell cylinders, busbars/contact regions, spacers and external heat-loss pathways.
- 2. Define a documented onset/heat-release model with calibrated source terms rather than treating an arbitrary temperature threshold as universal.
- 3. Couple cell heat generation to solid conduction, radiation and convection appropriate to the pack configuration.
- 4. Evaluate spacing, barrier conductivity, coolant conditions or vent-direction assumptions without overstating unmodelled gas/fire behaviour.
What should be visible in the results
- Output 1: Peak cell temperature and maximum temperature-rise rate. Record units, labels, stimulus conditions and analysis time window.
- Output 2: Time between initiating event and neighbouring-cell thermal response. Record units, labels, stimulus conditions and analysis time window.
- Output 3: Spatial propagation path and integrated heat released per cell. Record units, labels, stimulus conditions and analysis time window.
- Output 4: Sensitivity to barrier materials, gap size and boundary heat loss. Record units, labels, stimulus conditions and analysis time window.
How to read the evidence
A simulated rise in neighbour temperature demonstrates a modelled thermal pathway, not validated runaway risk. Propagation conclusions require defensible heat-release inputs and corroborating test data.
Distinguish the material demonstrated in the source video from additional plots proposed here. Without the original numerical result files, the headings in this guide are a validation plan rather than evidence of achieved performance.
Reproducibility record
- Checkpoint 1: Use chemistry-specific parameter evidence if quantitative predictions are claimed.
- Checkpoint 2: State whether venting, combustion, gas pressure and electrochemistry are excluded.
- Checkpoint 3: Perform time-step and mesh convergence during the rapid exothermic interval.
Engineering use and next steps
For a defensible engineering report, provide schematic or geometry images, software version, unit-checked parameter tables, imposed inputs, solver configuration and the raw graph exports.
Compare the video demonstration with the original project files before describing a particular waveform or efficiency as experimentally verified.
Related project watch pages
Watch the relevant simulation output first, then use this article as a technical review or experimental planning guide.
Engineering research support
For the underlying MATLAB/Simulink, COMSOL, ANSYS HFSS or power electronics model, verification of solver settings, and documented outputs, contact the MATLAB Projects Code research team. Articles describe engineering validation approaches and are not a substitute for measured validation data.
Contents are for representative purposes; actual content may vary.