BMW and Daimler to join hands in developing wireless charging system for their Electric Vehicles
|   Saturday, July 12, 2014
BMW has already made its mark in the full electric powered car segment holding its BMW i3 model in high esteem. They had plans to develop some wireless charging facility for this new segment of electric vehicles. The German automaker has an unparalleled reputation in the market for its innovative touches on four wheels.

Their long-time rival, Daimler, which is renowned as the parent company of their world famous brand Benz is planning to shake hands to start a journey towards a new era of technological excellence.
Both companies have highly trained and adept engineers and their vision collided on the field of wireless charging.

When BMW surged into auto market with their first dedicated EV, the famous i3 model, the ado was high and expectations started to swell when they promised to develop wireless charging facilities for these Electric Vehicles. BMW joined their research work with Daimler to speed up their process of research and development as Daimler has also been working on this concept of inductive charging solutions.

On technical grounds, BMW revealed its working concept lately and explained how inductive charging is far better than conductive charging systems. In case of conductive charging, which can also be compared to other types of connected charging, the car is brought to a charging platform and is connected to a mini power station with the help of some physical medium.

With this innovation of inductive charging, conductive seems to be slow and lacks sophistication. Here they implement this technique of electromagnetic induction to charge an electric car. In this system, there is going to be a charging coil embedded in the ground above which the car will be parked. There will be a receiver plate fitted to the car's underside.

When the car is brought above this magnetic induction coil, power is made to flow from a power source to this primary coil. With the flow of power, a magnetic field is developed around this coil. Now when this secondary coil, which is directly connected to an electric car's battery is brought above this primary coil, there is a change in flux density. With this change, current starts flowing in the secondary coil which charges the cars battery.

BWM and Daimler have successfully outlined the technology but a series of question arises when we consider its efficiency. Hypothetically we always assume that a car is parked in such a way that it's receiver plate exactly above the primary supplying coil and there is loss of flux. But if the car is parked in such a way that its axis doesn't intersect with the primary coil, the efficiency falls drastically.

BMW revealed to the media that they had tested this system successfully with their i3 and i8 models. Daimler has their interest in this technology as their Mercedes Benz B-class has a model titled Electric Drive, which is often compared to BMW's i3, can also implement this wireless charging technology. Both these esteemed automakers are trying to overcome the challenges they face from the Combined Charge Standard.
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