Israel to test electric roads that wirelessly charge vehicles as they drive
08 / 01 / 2017
Forget the charging port—the roads of the near future could power your electric car while you drive, eliminating the need to ever stop to recharge or refuel again. Israeli startup Electroad is working to pave the way towards a greener world with technology that retrofits existing roads with buried coils to inductively charge electric vehicles. The team has already performed successful tests of the technology, and will be demoing the electric roads on a larger scale with a public bus route in Tel-Aviv.
Founded with the goal of reducing global emissions, Electroad promises a more cost-effective, efficient, and cleaner way to travel. The startup uses technology that relies on electromagnetic induction - the basic principle behind wirelessly powering smartphones and rechargeable toothbrushes - to power electric cars with renewable energy while driving. Although other companies like Qualcomm and KAIST also work with wireless vehicle charging, Electroad’s CEO Oren Ezer says that while the concept is the same, the technology is different.
“Our technology is flexible,” said Ezer. “Only copper and rubber is needed, and deployment is quick and easy. You can retrofit one kilometer of road in just half a day, from night to morning.” The installation process begins with an asphalt scraper that digs an 8-centimeter-deep trench. A second vehicle installs the wireless energy charging strips and fills the trench back up with asphalt. Smart inverters with real-time communication are installed on the sides of the road. A coil unit attached beneath the electric vehicle receives power transferred over a small 24-centimeter air gap. Radiation is minimized and locally shielded for driver and passenger safety.
Related: KAIST Launches First Road-Charged OLEV Electric Buses in South Korea
Electroad plans to focus on public transportation first before opening the platform up to private transit. The startup successfully tested their technology with an electric bus five months ago in Tel Aviv and opened 20 meters of retrofitted electric road outside their lab. Soon the company will test out the technology on a public electric bus with a set route in Tel Aviv. Since the bus will drive on electric roads, it won’t need to be recharged though it will have a small battery to allow the bus to drive up to five kilometers without an electric current.
“We remove the energy source,” said Ezer. “The electricity will come from renewable energy transferred to the road. This is a really sustainable solution. A battery for an electric bus can cost $300,000 and weigh 5 tons. If you remove the battery then the bus is much lighter and requires less energy. This technology is cost saving. If you compare it to diesel buses, it’s half the price. If you just start with public transportation it will save money and then you can open it up to taxis and trams. Payback is very fast.”
Ezer has a dream to turn all of Israel’s transportation electric with inductive charging. Electroad received a research and innovation grant from the European Union’s Horizon 2020 and recently completed a program at Capital Nature, an accelerator that focuses on emerging renewable energy in Israel. The startup plans to test their technology on a public bus route in Tel Aviv next year.