In an ideal world, electric car drivers would never deal with charging cables. No need to plug in a wall charger or charging pile, they just park the car on the wireless charging hub and walk away. When they return, their car will be fully charged and ready to continue along the road.
That is a dream, but not a fantasy. Oak Ridge National Laboratory is located near Knoxville, Tennessee, and is part of the United States Department of Energy. Among its many missions, it is working on improving wireless charging technology and has recently licensed its latest system to HEVO in Brooklyn, New York, which will focus on making it commercially viable.
"High-efficiency wireless charging is a breakthrough technology that can alleviate the anxiety about the range of electric vehicles and promote U.S. efforts to decarbonize the transportation sector," said Xin Sun, deputy director of ORNL's Energy Science and Technology Laboratory. "We are very happy to see... one of our technologies enters the private sector, where it can create new green jobs and support the country's clean energy goals."
The license covers ORNL's unique multi-phase solenoid coils, which provides the highest surface power density available—1.5 megawatts (1,500 kilowatts) per square meter. This is up to 10 times higher than currently available wireless technology. This surface power density supports higher power levels in thinner and lighter coils, solving the problem of increasing the range of electric vehicles.
The license also includes ORNL's Oak Ridge converter, which eliminates one of the power conversion stages required for wireless power transmission, making the fixed infrastructure more compact and less costly.
ORNL has just announced that it is cooperating with Volkswagen's innovation center in Knoxville and the University of Tennessee to provide perfect wireless charging for production cars. Wireless systems used to be limited to a charging power of 6.6 kW, and today ORNL is developing a system that can provide 120 kW of power. The goal is to reach 300 kW, which is enough to charge the Porsche Taycan to 80% SOC in about 10 minutes.
A compact multi-phase electromagnetic coil developed by ORNL. Image source: Carlos Jones/ORNL, U.S. Department of Energy.
"We are very happy to work with Volkswagen to showcase ORNL's high-power, ultra-efficient wireless charging technology," Sun Xin said. "Our unique multi-phase electromagnetic coil design and power electronic equipment provide high power transmission levels in a compact system, which may reduce the anxiety of electric vehicles and accelerate the decarbonization of the US transportation sector." The wireless charging project has achieved energy efficiency and availability. Support from the Vehicle Technology Office of the Office of Renewable Energy.
According to Inside EVs, the efficiency of the latest technology is 98%, which means that between the external charging center and the receiver installed on the bottom of the car, only about 2% of the electricity will be lost to the charging center.
Wireless charging will bring the gospel of the electric car revolution, and autonomous driving technology will help to accurately locate the car, so that the wireless charging center can operate at the highest efficiency. boarding. parking. Go shopping and leave with a fully charged battery. This is something that no fossil fuel powered car can do.
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Post time: Feb-01-2020