Japan trials wireless fast charging of moving vehicles
Researchers in Japan are testing wireless fast charging of moving electric vehicles over the next year in a government trial.
The joint research group from the University of Tokyo and Chiba University includes nine companies including Bridgestone, Mitsui Fudosan, ROHM, and NSK is demonstrating in-motion power supply for wireless fast charging of electric vehicles at Kashiwa-no-ha Smart City in Kashiwa City, Chiba Prefecture.
The trial will run until March 2025 under the direction of the Japanese Ministry of Land, Infrastructure, Transport and Tourism.
- Efficiency boost for charging of moving vehicles
- Charging for e-buses in commercial operation
- Charging on the move hits kW range
The power supply system uses pre-cast coils embedded in the road and was developed by Professor Hiroshi Fujimoto and Associate Professor Osamu Shimizu of the Graduate School of Frontier Sciences at the University of Tokyo, and can supply power not only to electric vehicles but also to plug-in hybrid vehicles. A 10-second charge will enable a typical electric car to travel 1 km, while 60s at a stop sign would provide charge for 6km.
This could help reduce the weight of a vehicle by requiring less batteries and boosting the range.
If the power transmission coil on the road side is always energized, energy will be wasted when there is no vehicle on the power transmission coil, but the system is equipped with a system that minimizes standby power and enables vehicle detection in a short time.
In order to use power transmission coils safely, they must have sufficient durability as a road surface and be capable of transmitting power. The research group will use this experiment to verify the durability of the precast coil that integrates the power transmission coil and road surface.
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
