Wireless charging for moving vehicles

Honda is developing a wireless power transfer system in Japan that can supply electricity to electric vehicles while they are driving. The technology aims to deliver up to 150 kW of power, similar to fast-charging stations, and is expected to enter open-road testing by 2027.

Dynamic wireless power transfer system

The system, called Dynamic Wireless Power Transfer (DWPT), uses emitters embedded in the road to create a magnetic field. A receiver under the vehicle captures this energy, allowing the car to charge without stopping or using cables.

Collaboration between companies

Honda is working with Japanese companies Taisei and Taisei Rotec on the project. Honda focuses on the components that emit and receive electricity, while Taisei handles the power supply and Taisei Rotec integrates the system into the road.

Compatibility with existing roads

One of the main challenges is ensuring the system works with existing infrastructure. The modules are designed to be installed after road surfacing, avoiding the need for complete road reconstruction. They are also built to handle the weight of heavy vehicles up to 20 tonnes.

High power levels and testing

Honda plans to operate the system at up to 150 kW, even at high speeds. However, the exact amount of energy a vehicle can recover is not yet specified. A new test track must be built by the end of 2026 to assess the system's durability and safety.

Future testing and applications

Honda aims to test the system on the Tateyama Expressway in Chiba Prefecture starting in 2027. Initially, the technology will target heavy trucks, which benefit most from continuous charging. Eventually, it could be adapted for private vehicles, though challenges remain in cost and infrastructure.