Honda In Road Charging Tech Gives 25 Miles Of Range For 1 Mile Of Infrastructure
The research team at Honda R &D Co. has, for couple of years now, been developing a high-power, contact-type dynamic charging system for electric vehicles. What is dynamic charging? Well, filling up your battery while moving down the road, of course. And the best part is that you only need charging lanes in four percent of the total distance traveled. That means you need one mile of charging road for every 25 miles in your tank. If you had those chargers installed, your car would feel like it had unlimited range.
Two power levels are being considered: 180 kW (600 VDC, 300 A) for cars and 400 kW for heavy duty vehicles. The dynamic charging would be performed at speeds up to 96 mph (155 km/h), for the cars, at least.
Costs for the contact-type dynamic charging are said to be 20 times lower than non-contact systems (or what is known as wireless charging). Results of the developments will be presented at the WCX 17: SAE World Congress Experience in Detroit in early April.
“Reducing the amount of CO2 emissions to zero while driving is considered an important goal for the mobility sector in order to achieve a zero CO2 society. A key point in achieving this is the further evolution of electrified vehicles that are driven only by motors and are not equipped with a generator that uses fossil fuels, that is to say electric vehicles (EV) and fuel cell vehicles (FCV). Major issues facing EV include range, charging (hassle, time, construction of infrastructure)， and reduced driving performance due to increased vehicle weight. Technology enabling to both supply power and perform charging while driving (dynamic charging) is being researched and developed as a means of addressing issues such as those above. If the amount of energy that can be supplied while driving does not at least exceed the driving energy of the traveling vehicle, then battery charging cannot be performed, and the vehicle would also need to continuously travel in a restricted lane in the manner of a train. In addition, dynamic charging of large vehicles traveling intermixed with regular vehicles calls for power supply on the level of 400 kW. Against this background, this study developed a high-power dynamic charging system that uses high power to charge a traveling EV, with the goal of realizing an unlimited vehicle range. This enables complete energy refueling (charging) of a traveling EV in a short time and allows drivers to freely drive over the intended route after charging. This report describes a system that enables dynamic charging with a charging power of 180 kW (DC 600 V, 300 A) while driving at a vehicle speed of 155 km/h, presents the results of running tests, and discusses future prospects.”
Source: Green Car Congress