2017 Nissan Leaf:
Wireless Charging Fit For 60kWh Battery
Quelle: Daily Sun; By Staff Reporter | January 14, 2016

Besides working with BMW to develop fast charging stations across the nation, Nissan has also been grinding away with Foster + Partners for another type of charging.

Set to debut in the 2016 Geneva Auto Show in March, the Fuel Station of the Future concept takes ditches the wire in charging the Nissan Leaf.

The 7kW wireless charging system is surely not as fast as the fast charging ones that was recently set up, but it would do well for drivers who intend to leave their Leaf overnight without the complications that come with plugging in to charge.

It would be able to handle the 60kWh battery pack that is currently in development for the next-generation Nissan Leaf set to be released in 2017.

The model by then would be significantly redesigned and is expected to come along with semi-autonomous driving technology based on the Nissan IDS concept that has been taken for testing on congestion city roads in Japan at the tail end of last year.

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Audi wireless charging wireless charging with alternating current

DC fast charging is virtually impossible in the private infrastructure due to the limited grid power. AWC (Audi wireless charging) is an inductive AC charging technology Audi is developing as an alternative that also makes home charging extremely convenient. The company hopes to launch AWC in 2017.

With AWC, the energy is transferred via a floor charging plate connected to the electric grid. The plate has an integrated primary coil and an inverter (AC/AC converter). Connected to a 16 ampere, single-phase outlet, the first-generation system offers a charging power of 3.6 kW, with higher powers of up to 11 kW possible in the next version.

When the customer approaches to within a few meters of the charging plate with his Audi e-tron, the plate establishes radio contact with the car. The driver then sees the precise position of the floor plate on the display. Charging can begin immediately after proper positioning or according to a timer. With the piloted parking systems Audi is currently developing for production use, the car handles positioning itself. The driver can get out of the car and then initiate the parking procedure remotely via her smartphone.

Prior to charging, an integrated electric motor in the floor plate raises the primary coil. This minimizes the distance between it and the secondary coil, which is integrated into the front section of the Audi e-tron floor pan, regardless of the specific vehicle. The floor plate’s alternating electromagnetic field induces an alternating current in the car’s secondary coil across the air gap. An AC/DC converter inverts the current, which is then fed into the high-voltage electrical system. There it charges the battery and powers additional consumers such as the heating or air conditioning as needed. The driver can interrupt the charging process at any time, and charging stops automatically when the battery is full.

Because the alternating field is only generated when a car is over the plate and the coil is active, there is no risk to people or animals. The small air gap prevents the magnetic field from interfering with electronic devices.

The first generation of the AWC technology is ideal for use in home garages or office building parking garages. A later version can be integrated in a modified form into the public infrastructure, such as into the asphalt of roads and parking lots.”