Fire protection for electric and hybrid vehicles
The significant fire risks associated with vehicles being powered by batteries and high-power electric engines/devices are not widely understood. For example, the consequence of a malfunctioning Li-ion battery can be severe, potentially resulting in a thermal runaway situation with rapid-fire and heat propagation as well as the emission of toxic gasses, posing a significant threat to vehicle drivers, occupants as well as the environment in which the vehicle is operating.
Fire risks
You could argue that fire risks increase when introducing electric vehicles. For example, a significant part of the fire risks in a traditional combustion engine vehicle is related to the vehicle’s electrical system.
These risks are further accentuated in an electric vehicle with more electrical components, wiring, and higher power running through the electrical system. In addition, the Li-ion battery adds a whole new risk element to an electric vehicle.
Dafo Vehicle Fire Protection
Through multiple international collaborative research projects in which studies were made of fire risks associated with lithium-ion batteries in vehicles, Dafo Vehicle Fire Protection has developed the fire protection system solution Safe EVTM that addresses and mitigates these risks effectively and safely.
The suppression agent Forrex EV™ is part of the complex system solution, providing adequate cooling capacity to slow the fire development and allow the safe evacuation of passengers.
Depending on the protection level that needs to be achieved, the early warning detection system solution Safe EV™ can be applied outside the battery packs or as an integrated part. The solution can be limited to detection only without the suppression application.
The protective zones
The full-coverage multi-zone fire protection solution responds to the urgent need for risk mitigation in EV and HEV vehicles.
Основные сценарии риска, как правило, делятся на четыре зоны защиты, чтобы охватить все зоны риска транспортных средств EV или HEV. The different protection zones are protected in various ways by robust detection and suppression systems – liquid- and gas-based solutions.
Zone 1 – Engine compartment
Zone 2 – Electrical hazards
Zone 3 – Traditional hazards
Zone 4 – Batteries
The system will detect potential battery failure at the earliest possible stage and take immediate action by cooling, using the suppression agent Forrex EV™. This will effectively stop, or delay, a potentially hazardous situation without the fire developing further.
