Volvo Researches EV Safety Systems
"A holistic approach and real-life traffic conditions are always the starting-point for Volvo's safety work. Based on our massive database featuring input from actual road accidents, we know where the focus must lie in everyday traffic conditions. The solutions we have developed for our forthcoming electric cars therefore take into account the situations that are unique to this type of car," Thomas Broberg, Volvo Cars safety expert said.
The increased battery protection is needed because, in case it is damaged, it can cause the release of a harmful gas. Even in the unlikely case
To look into the matter, Volvo has split safety technologies in 5 stages, each representing a different phase of accident sequence.
Normal driving – in this stage, a system is required to monitor each of the battery cell, so that each maintain the correct voltage level and optimal operating temperature. If any changes are being recorded, the system will automatically shut down the battery.
Conflict – the weight of the battery is an important factor which influences the car's behavior. The increased mass will be handled by Volvo's Dynamic Stability and Traction Control (DSTC).
Avoidance – to avoid an imminent accident, the cars will use Collision Warning with Full Auto Brake and City Safety to either completely avoid the crash or limit its consequences. In this area, the systems used will basically be the same as in any other car.
After the collision – to prevent short-circuits, Volvo batteries will use a system similar to the household earth fault circuit breaker. It will shut down and isolate the battery if the electric current travels the wrong way or if two cables come in contact as a result of the accident.
As was the case with the vehicles and safety systems in use today, we are confident Volvo will come up with some type of contraption to increase EV safety. Even if the guidelines for such systems were already drafted, further EV development will definitely bring on new challenges for manufacturers to solve.