Battery knowledge · Safety and abuse
Firefighter access
A deliberate opening in a traction battery’s casing, sealed by a disc that gives way under a fire hose’s jet, so firefighters can flood the cells directly instead of cooling the outside of the pack for hours. Renault Group fits it to its electric and plug-in hybrid vehicles and in 2025 offered the design free of charge to other carmakers.
- Also called
- Fireman Access
Example
Safety and abuse: an example situation
A low normal-load temperature does not demonstrate thermal-runaway containment.
Read Firefighter access alongside Enclosure in this context. The sealed case that carries the modules, protects them in a crash, keeps water out to an IP67 rating or better and vents gas in a thermal event. In many cars it is a structural part of the body.
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
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- Thermal runaway mechanism of lithium ion battery for electric vehicles: A review
Xuning Feng et al. · Energy Storage Materials · 2018
Topic background · Electrical, mechanical and thermal abuse; thermal-runaway mechanisms and propagation.