BMW on Monday announced availability of a new wireless
charging system, making it the first automaker to bring the technology to
market. (Mercedes-Benz also plans one for its S-Class.)
The wireless charger goes into production in July and is
currently available to order in the United States, along with China, Germany,
Japan and the United Kingdom. The first compatible model is the 2018 BMW
530e iPerformance plug-in hybrid but others are to follow.
The system consists of a pad that sits on the ground and
plugged into a power socket. The pad, which is waterproof so can be placed
outside, contains a primary coil that transfers electricity via magnetic field
to a secondary coil located underneath the nose of the car. Known as inductive charging, it's
the same technology you find in electric toothbrush chargers, only much more
powerful.
The system has a charging capacity of 3.2 kilowatts, or
enough to charge the 9.2-kilowatt-hour battery of the 530e iPerformance in 3.5
hours. BMW says the wireless charger's efficiency rate is a high 85 percent.
The main benefit is convenience. There's no longer the need
to fumble around with a charging cable every time you arrive home. There's also
no longer the chance that you might pull out with the charging cable still
plugged in.
And you don't have to worry about struggling to line up the
car over the pad containing the primary coil. The pad communicates with the car
via WiFi and provides colored directional markings in the infotainment screen.
An icon shows when the correct parking position has been reached. And don't
worry, this can deviate from the optimum position by several inches so
precision parking isn't required. Charging will then start as soon as the
driver switches off the car and stops when the battery is full.
The 2018 BMW 530e iPerformance features a 2.0-liter turbocharged
inline-4 paired in parallel with a single electric motor. The electric motor is
integrated with the transmission, in this case an eight-speed automatic, and
drive is to the rear wheels only. Peak output of the system is 248 horsepower
and 310 pound-feet of torque which BMW says enough to hustle the 530e
iPerformance from 0-62 mph in 6.2 seconds.
source: https://www.motorauthority.com/news/1116935_bmw-first-on-the-market-with-wireless-charger-for-cars
by Viknesh Vijayenthiran
http://www.boscheuropean.com
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