Battery knowledge · Safety and abuse
Nail penetration test
Driving a steel nail through a charged cell to create a sudden internal short circuit. It is easy to run and widely cited, but its severity depends on nail size, speed and depth, and it is a poor stand-in for the small latent shorts that cause field failures. [1]
Example
Safety and abuse: an example situation
A low normal-load temperature does not demonstrate thermal-runaway containment.
Read Nail penetration test alongside Abuse testing in this context. 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.
Use in Lemonergy
Connect mechanisms with appropriate test evidence.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Technical references
- Thermal runaway mechanism of lithium ion battery for electric vehicles: A review
Xuning Feng et al. · Energy Storage Materials · 2018
Technical reference · Electrical, mechanical and thermal abuse; thermal-runaway mechanisms and propagation.