One question I know I have when talking about electric cars in general is how safe are they? The smart electric drive offers the standard safety features of the gasoline smart such as 8-airbags in the coupe or 6-airbags in the cabriolet, Anti-lock brakes, ESP and the patented tridion safety cell. There are additional safety features that are unique to the electric drive.
The high-voltage on-board system shut-off:
In the event of an accident, the high-voltage on-board electrical system can be shut off either by the high-voltage crash sensor control unit or the restraint systems control unit.
2. Shutoff by the restraint systems control unit
When the restraint systems control unit triggers the airbags in the event of an accident, the
pyrofuse in the contactor control line is also triggered. The control line is physically
interrupted due to this disconnection. The high-voltage output remains irreversibly shut off.
3. Shutoff by the high-voltage crash sensor control
The high-voltage crash sensor control unit is located beneath the left seat on the vehicle
floor. It shuts the high-voltage on-board electrical system off in the event of a stationary
crash or the vehicle's rolling over. The high-voltage on-board electrical system and the high-voltage crash sensor control unit are also active during preconditioning in a parked vehicle. Via a signal on the CAN bus, the high-voltage crash sensor control unit causes the battery management system control unit to shut off contactor actuation. This high-voltage on-board electrical system shutoff is reversible.
And, as shown in the pic, the engineers have added a battery strut which not only provides support, but helps to keep the battery free from road debris and other elements that could harm the battery. There is also the side-impact reinforcements that help reduce intrusion on the battery in the event you are hit from the side.
1 - High-voltage battery supporting strut
2 - Reinforcement for protection against side crashes