Thermal runaway characterization requires more than triggering failure—it requires controlled, repeatable stimulus and high-fidelity data capture.

For test lab engineers working with lithium-ion cells, modules, and packs, external heater-induced thermal runaway is one of the most precise methods to evaluate failure behavior under defined conditions.
By applying a calibrated heat input directly to the cell (or localized region within a module), the onset of thermal runaway can be initiated without introducing additional variables associated with electrical or mechanical abuse.

This approach enables:

• Accurate determination of thermal runaway onset temperature (T?????) and time-to-event under known heat flux
• Isolation of cell-level exothermic response from external electrical contributions
• Repeatable propagation studies across adjacent cells with controlled spatial heating profiles
• Validation of thermal management strategies (cooling paths, phase change materials, heat shields) under realistic failure scenarios
• Instrumentation-driven analysis using thermocouples, heat flux sensors, pressure transducers, and gas sampling systems