These are special road surfaces, which are built-in modules that allow you to charge an electric car without physically clinging to its battery.
Tests of the technology of wireless charging of electric cars in Japan have been launched. The project is being implemented by the construction company Obayashi, and the manufacturer of components for the pavement is Denso, as the Nikkei newspaper notes. Mass implementation of the technology on public roads should begin before 2025.
For this technology, Obayashi decided to develop a very durable concrete that can perfectly cope with loads in the form of a rather large mass of electric vehicles. At the same time, it is necessary to take into account the fact that the charging components should be installed as close as possible to the surface. In turn, Denso took responsibility for the creation of coils and other components for charging.
The tests were conducted at a special training ground. There, engineers managed to ensure that the car was charged right on the go, without needing to stop. However, there is one caveat – the vehicle had to move at a speed of no more than 15 km / h.
This speed is very slow, and the question arises about the feasibility of the emergence of such a technology. However, it should be noted that this is, first, a step into the future. And, probably, it will be possible to modify this technology, in the future the permissible speed will increase, as well as the charging power.
“But the issue of cost cannot be ignored. The construction and subsequent repair of such roads will become much more expensive. And the asphalt layer will absorb a huge part of the released energy, so the chargers must be very powerful.”