green innovation- wireless charging system for electric vehicles
TRANSCRIPT
WIRELESS CHARGING
SYSTEMFOR ELECTRIC
VEHICLES
Wireless vehicles is the dream
Going Wireless vehicles is the dream for most
consumers.
E-V drivers could soon be pulling the plug
on their charging stations.
Charging is getting a whole lot easier
for electric vehicles. Pretty soon you won’t
even have to plug-in to power up.
EASIER FOR ELECTRIC VEHICLES
WIRELESS POWER TRANSFER LAB’S
The Lab’s wireless power transfer project recently received a special recognition award by R&D Magazine for innovation. The lab Teamed
up with industry to develop the world’s first 20-kilowatt wireless charging system for passenger cars.
The Electric current is transferred by creating
a magnetic field between a transmitting pad on the ground and a receiving pad located
under the vehicle.
CREATING A MAGNETIC FIELD
The System is 90% efficient while charging at three times the power ratting of a conventional charger.
This means that you can recharge an average all-electric vehicle in one to two hours… or a hybrid plug-in in less than an hour.
POWER RATTING OF A CONVENTIONAL CHARGER
Japanese firm to launch wireless charging system for electric vehicles
Japanese firm IHI Corporation aims to put into practical use, as early as 2019, a wireless system that will allow people to charge electric vehicles without using an electric cable.
Japanese firm IHI Corp. aims to launch a wireless system that will allow people to charge electric vehicles without using an electric cable as early as 2019.
A user-friendly system, in which drivers could charge EVs while they are parked, is expected to boost the spread of EVs.
When charging a standard EV with a battery capacity of 30 kilowatt-hours, drivers currently use a normal battery charger for household use for about 10 hours, or a rapid charger that completes the task in dozens of minutes.
In both cases, the charger and the EV are connected through electric cables. The wireless charging system uses magnetic resonance coupling, which effectively supplies electricity even when the power source and the recipient are apart from one another.
A special electric current is generated by a battery charger, about half the size of a tatami mat that is buried in the ground.
The current runs into the circuits of a power receiving device attached to the EV, thereby charging the vehicle.
Major automobile manufacturers, including Germany’s Volkswagen AG and Nissan Motor Co., are researching wireless charging systems as well.
A major map information company, normal and rapid chargers for EVs in Japan was used at about 6,000 locations as of May 2012. That number had quadrupled to about 24,000 locations in November 2016, According to Zenrin Co.
EVs have some challenges, including the relatively limited distance they can travel on one charge. But if charging systems become better and more user-friendly, that will promote the further spread of EVs. (s#thejapannews,tokyo)
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