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smart fortwo electric drive
/ Pioneering electric car
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>> A power pack, packaged safely.
The battery.
Safety also has top priority when it comes to electric mobility. Especially where the battery is concerned.
This is why the smart fortwo electric drive comes with many innovative solutions to keep you safe in any
situation. For instance, the battery is well protected in the underbody. This not only enhances safety, but also
adds to the ride comfort – the low centre of gravity is conducive to agile handling and cornering stability.
The 17.6 kWh lithium-ion battery in the smart fortwo electric drive was developed and produced by Deutsche
ACCUmotive, a joint venture between Daimler AG and Evonik Industries AG, set up with a view to electrifying
automotive drive systems with powerful and reliable battery technology. This battery offers a number of
advantages compared with conventional lithium-ion batteries. For a start, it can be used in a wider range
of outside temperatures and it has both a higher cycle strength and a longer service life. Partial charging is
also possible at any time. This is because lithium-ion batteries have no memory effect which means that the
range is not reduced. In this way, the smart battery meets all the demands made on an electric car designed
for everyday use.
Not all batteries are the same.
Believe it or not, most batteries used in electric cars were originally
designed for completely different purposes. For mobile phones,
laptops and other battery-operated devices. Needless to say, this
leaves substantial room for improvement.
Electrical safety:
Two separate power supplies – in addition to the
high-voltage system for the electric drive, the
smart fortwo electric drive has a traditional on-
board electrical system with a 12 V car battery.
Both systems are kept separate from one another,
with the high-voltage battery activated by the
12 V on-board electrical system. All plugs are
protected and monitored by their own 12 V
interlock circuit. This ensures that the vehicle
occupants do not come into contact with high
voltage at any time.
smart
ELECTRI
17.6 kWh lithium-ion
Source: www.handelsblatt.de
*European model shown.
Functional safety:
Effective protection is the key – the battery is
continually monitored by the vehicle's on-board
electronics in order to ensure optimum functionality
at all times.
C
ITY SOLUTION
battery
Watertight protection:
Whether you go through a car wash or experience a sudden
cloudburst – the watertight battery is ready for all eventualities.
So you can rest assured that both you and the battery stay
safe and dry.
Thermal safety:
In addition to the voltage and the state of charge,
the battery temperature is constantly monitored.
The battery is cooled or heated by the thermal
management system to ensure optimum performance
whatever the weather.
Mechanical safety:
Should an accident ever occur, the high-voltage elements
are automatically disconnected. As has been proven by an
extensive series of crash tests, this is a highly effective
protective mechanism.
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