Delphi Automotive and WiTricity presented the Wireless Charging System during the recently concluded Frankfurt Motor Show. This system was incorporated into a handful of demo vehicles on display at Frankfurt. Representatives from Delphi noted that the Wireless Charging System was created to remedy common problems with EV charging units. These issues range from the inconvenience of wired charging for drivers in a hurry to safety concerns when the weather turns bad. The Wireless Charging System advances inductive charging technology to increase charging distance, enhance charge speed and improve safety measures.
MIT Professor Marin Soljacic led the design team created by Delphi and WiTricity. Dr. Soljacic was tasked with creating a mid-range charging system that could work even if the vehicle was several feet from the charger. The Wireless Charging System team focused on a non-radiating form of charging using a magnetic field for battery recharging. Most firms dealing with wireless charging have relied on radiating technology that requires close proximity between the vehicle and charge point. The result of the Delphi/WiTricity collaboration is an innovative charger that uses a powerful magnetic coupling to create a sufficient field for recharging.
The Wireless Charging System is designed for home garages as well as dedicated parking spots for corporate employees. Delphi notes that the system can recharge a battery pack at a 3.3.kW rate, which is competitive with the typical plug-in charger. Dr. Soljicac and his engineering team ensured that the magnetic fields created by this system are safe for passengers and pets alike. The system’s lightweight design and remote charging capability creates the opportunity to install systems out of sight. Delphi and WiTricity discussed the potential to bury the Wireless Charging System into walls and floors as a means of preventing structural damage. Users would also avoid charging fluctuations due to precipitation and temperature with the Wireless Charging System.
The convenience of the Wireless Charging System is likely restricted to a small niche of EV drivers for the foreseeable future. Delphi and WiTricity recognize that plug-in vehicles and charging stations represent the current trend in EV infrastructure. The Wireless Charging System could be augmented with portable plug-in units currently developed by Delphi. The Portable Electric Vehicle Charge from Delphi could be reconfigured to turn wireless charging into plug-in charging away from home. Wireless charging might not take the world by storm in the near future but this technology could become commonplace if EVs begin to tip the balance in the transportation industry.-hybridmile.com
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