Thermal shock and cycling test

Example

Use in Lemonergy

Record specimen, state, instrument, temperature and timing.

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Connected concepts

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Abuse testing

Deliberately driving cells and packs beyond their limits — overcharge, crush, nail penetration, external short, heating, drop — to see how they fail. Standards define each test and rank the outcome on a hazard scale from no effect to explosion.

UN 38.3

The United Nations test sequence that every lithium cell and battery must pass before it can be shipped: altitude, thermal cycling, vibration, shock, external short, impact or crush, overcharge and forced discharge. Air shipment of cells also caps state of charge at 30 %.

R100 Part II

The part of UN R100 that tests the battery system as a unit: vibration, thermal shock and cycling, mechanical shock and crash impact, fire resistance, external short circuit, overcharge and over-discharge protection, over-temperature protection and, from the 03 series, thermal propagation. Each test ends with a check that there is no fire, explosion, electrolyte leakage or loss of isolation.

Vibration and shock test

Shaking a cell or pack on a vibration table to a profile standing for years of road use, and striking it with defined mechanical shocks, then checking for loose connections, leaks and loss of isolation. UN 38.3, R100 and ISO 12405 each specify a profile.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

1. Battery Test Manual For Electric Vehicles, Revision 3

   Jon P. Christopherson · Idaho National Laboratory · 2015

   Topic background · Performance characterization, pulse resistance/power, life testing and reference performance tests; historical 2015 edition.