Charging Highway: Farewell to Heavy Batteries?

According to the report, the Japanese scientists are developing charging highway, if the dream comes true, the future of the electric cars will be charged by the charging highway. With the technology put into use, the electric car will from now say “goodbye” to heavy battery. Battery not only increased car weight, improve fuel consumption, but also need charge timely.

Several decades ago, the idea of building charging highway was put forward. Previous people attempted to implant charging coil to the highway to form electromagnetic field, electromagnetic field through the reaction of a coil to charge for car battery. Japan Toyota center for research and development of the laboratory said: “because the coil must be arranged face to face in order to achieve higher efficiency. The technology can be used in the parking lot for car battery, but can not charge high efficiently for the car driving.

At present, Japan scientist is developing a system, which can transmit power by the steel belt between tires and road metal plate. They are using a pair of tire transmission, tires always contact with pavement.

In order to test the losses degree when the power passes through the tire and rubber, they conducted a laboratory experiment. In experiments, they will put metal plate on the floor and in the tires. They find the energy loss in the circuit is less than 20%. Supported by enough power, this system can provide power supply for typical vehicle. At present, the research team is developing a small prototype to test the effectiveness of the charging system. They admitted that the technology of energy losses is far higher than normal cells.

However, some scientist said that by adopting the system, the highway metal plate voltage need to reach 50000v to satisfy it. This voltage is equal to the voltage a taser needed. He said: “you are not willing to drive in this highway.” In addition, in meet the energy level, circuit board will produce a powerful magnetic field, causing serious rf interference, which may let all electric system in confusion.