Porsche today showed off two of its new products at IAA in Munich. The long-awaited Cayenne EV showed up with a new trick: an 11kW induction charger.
Details are still a little sparse at the moment, but it looks like a forthcoming Cayenne, which we hope to get a better look at later this month, will have 11kW wireless charging capability. Also new: the Cayenne will DC charge at up to 400kW, one of the fastest charging cars we’ve seen outside of China. But back to induction charging…
Porsche’s press release didn’t mention the type of induction charging, whether it would be compatible with other types of inductive chargers, or whether this was something that would come on other Porsches, wider VW vehicles, or even across the industry. The price is listed at €2000 for the option on the car and €5000 for the charging pad.
How inductive charging works in detail
Inductive charging is known from smartphones, but also from electric toothbrushes. The energy is transferred through the air via a magnetic field. For this purpose, a transmitter coil made of copper and ferrites is located in the base plate. Alternating current flows through this coil, which generates a magnetic field.
Porsche’s innovative concept uses ultra-wideband technology to determine the vehicle’s relative position above the floor plate. When the optimal parking position is reached, the driver is informed. In the vehicle’s secondary coil, which acts as a receiver unit, the magnetic field then generates alternating current. A rectifier then converts this into direct current so that the Cayenne’s high-voltage battery can store it.
The mechanism works by showing the charger on the front-view display. The driver must align the car to a certain place on the front of the car. Once over the spot, the car will lower itself to within 4-6 inches of the charging pad.
- Porsche wireless charging
- Up to 11 kW
- Efficiency up to 90 %
- Active cooling
- Charging pad 50 kg and 1,17 m 46“ long
- Car lowers automatically when it parks over the pad
- Motion sensor shuts down the plate when living beings or metal is being detected
- Price 2.000 Euro vehicle, 5.000 Euro for the inductive plate, plus an electrician
At 240V, the 11kW Inductive charger would have a ~46A load. Porsche says the unit is up to 90% efficient, which means that the draw would be at least 12.2kW, which is about a 48A load at 240V.
Local media got a first hand look:
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