Wireless charging is on the way hitting up on the road for electric vehicles. Vehicles with wireless charging has a revolutionary inductive charging technology. Batteries being charged wirelessly when the bus stops to pick up the passengers. With no need to plug in the charge, its a breakthrough that should speed up the widespread adoption of electric vehicles.
Since charging in a electric vehicle is laborious as owner has to find charging point, connect up their cable and leave the vehicle for hours. This replaced by wireless power transfer technology which was developed decades ago, but its low efficiency restricted to little industrial settings, providing power for robotic vehicles and cranes.
It relies on the principle of electromagnetic induction. A magnetic field generated by an alternating current in a primary coil induces a current in a nearby secondary coil. It allows an energy transfer efficiency of 90%or higher.
John Boyes and Grant Covic at the University of Auckland in New Zealand worked out the optimal design for the shape of the coils to minimize energy losses. They also figured out how power can be transferred when the coils are misaligned so it still functions even if you are terrible at parking. The magnetic field has to be controlled so it stays within a safe limit, otherwise metals carried by passengers, from coins to pacemakers can get heated.
Two firms – IPT Technology of Efringen-Kirchen in Germany and Qualcomm Halo of London – have licensed the Auckland patents and are developing their own variants.On 9 January, the UK city of Milton Keynes launched a full-scale electric bus service, plying a 24-kilometer route with eight buses running from the city center to Bletchley, charged using IPT's pads.
In a test of the technology's potential, Paul Drayson, a British racing driver and entrepreneur, last October set the world land-speed record for a lightweight electric vehicle in a racing car charged by one of Qualcomm Halo's wireless pads. The company's technology will also charge the safety cars in Formula-E – the electric version of Formula 1 which kicks off later this year.
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Since charging in a electric vehicle is laborious as owner has to find charging point, connect up their cable and leave the vehicle for hours. This replaced by wireless power transfer technology which was developed decades ago, but its low efficiency restricted to little industrial settings, providing power for robotic vehicles and cranes.
It relies on the principle of electromagnetic induction. A magnetic field generated by an alternating current in a primary coil induces a current in a nearby secondary coil. It allows an energy transfer efficiency of 90%or higher.
John Boyes and Grant Covic at the University of Auckland in New Zealand worked out the optimal design for the shape of the coils to minimize energy losses. They also figured out how power can be transferred when the coils are misaligned so it still functions even if you are terrible at parking. The magnetic field has to be controlled so it stays within a safe limit, otherwise metals carried by passengers, from coins to pacemakers can get heated.
Two firms – IPT Technology of Efringen-Kirchen in Germany and Qualcomm Halo of London – have licensed the Auckland patents and are developing their own variants.On 9 January, the UK city of Milton Keynes launched a full-scale electric bus service, plying a 24-kilometer route with eight buses running from the city center to Bletchley, charged using IPT's pads.
In a test of the technology's potential, Paul Drayson, a British racing driver and entrepreneur, last October set the world land-speed record for a lightweight electric vehicle in a racing car charged by one of Qualcomm Halo's wireless pads. The company's technology will also charge the safety cars in Formula-E – the electric version of Formula 1 which kicks off later this year.
A full Detailed Article by QUALCOMM HALO..
Click Here..
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