Electric Vehicles no image

Published on October 7th, 2009 | by Susan Kraemer

37

Wireless, On-Road Electric Car Charging Patent Could be a Game Changer

[social_buttons]

A German supplier of electronics and powertrain design to most of the major automakers for the last 25 years has just secured a patent that could be a game changer for electric vehicle adoption. Their technology would allow electric vehicles to be charged as they drive over any road embedded with a recessed wireless recharging strip, using electromagnetic induction.

Ingenieurgesellschaft Auto und Verkehr (IAV) says the technology will be available commercially within 3 years, is insensitive to weather conditions, and is not susceptible to mechanical wear.

As Wilfried Nitschke from IAV says, “The road is then the range extender.”

The concept of on-the-go roadway recharging for electric vehicles has been out there for a while. In August Nissan floated the idea along with closer-to-fruition ideas like wireless charging stands for the garage.

In fact, it is not untested technology. DARPA has long funded similar work at the PATH program at Berkeley; moving automated buses along set “tracks”, which is a relatively efficient way for buses to operate. Recently university researchers at the Korean Advanced Institute Of Science Technology have also been able to achieve 80% efficient transmission from the road up through a 1 cm gap, or 60% effective transmission when the space widened to 12 cm (nearly 5″) when they tested the technology to move a bus.

But until this year, little work has been done on using the concept to charge electric cars going at freeway speeds along regular roads, while enabling the electric vehicles to also move freely onto and off of the charging strip, as IAV has done. (German video)

IAV has achieved 90% efficient transmission for electric vehicle charging from roads using recessed electrical conductors that generate a magnetic field; activated only when the sensor detects that an electric car is over the induction field. Radio chips would identify individual electric vehicles for correct billing.

The key issue has been maintaining a set distance between the sensor under the vehicle and the roadway.To solve that, the vehicle sensor must use active suspension and to also utilize optical electronic controls to maintain a consistent distance between the road and the sensor.

Source and Image: Ingenieurgesellschaft Auto und Verkehr


Tags: , , , , , , ,


About the Author

writes at CleanTechnica, CSP-Today, PV-Insider , SmartGridUpdate, and GreenProphet. She has also been published at Ecoseed, NRDC OnEarth, MatterNetwork, Celsius, EnergyNow, and Scientific American. As a former serial entrepreneur in product design, Susan brings an innovator's perspective on inventing a carbon-constrained civilization: If necessity is the mother of invention, solving climate change is the mother of all necessities! As a lover of history and sci-fi, she enjoys chronicling the strange future we are creating in these interesting times.    Follow Susan on Twitter @dotcommodity.



  • Brian N

    The technical details seem well conceived. The road could become very smart about congestion and help with traffic management. Your electricity rate could even be adjusted to # of car occupants.

    I would think this is best implemented first on roads most traffic’d over most hours such as inner cities because city congestion is probably more expensive than highway.

    This does mean the electricity grid will have to increase day time baseload so I’d want to see night time charging still the preferred charging source to minimize new generation capacity requirement.

  • Brian N

    The technical details seem well conceived. The road could become very smart about congestion and help with traffic management. Your electricity rate could even be adjusted to # of car occupants.

    I would think this is best implemented first on roads most traffic’d over most hours such as inner cities because city congestion is probably more expensive than highway.

    This does mean the electricity grid will have to increase day time baseload so I’d want to see night time charging still the preferred charging source to minimize new generation capacity requirement.

  • james h.cadoo

    HAVING COME UP FROM THE EARLY20S SAW ELECTRIC AUTOS COME AND GO BUT NOW IT IS IMPERATIVE THAT A GOOD ELECTRIC CAR BE USED,HOWEVER A SOLAR ROOF PANEL SHOULD BE IN USE TO RECHARGE THE BATTERIES WITHOU FEAR OF ELECTRIC FAILURE,,,ELECTRIC IS THE WAY OC THE FUTURE IN THAT WAY YOU WOULD NOT FEAR ELECTRIC STOPPAGE

  • james h.cadoo

    HAVING COME UP FROM THE EARLY20S SAW ELECTRIC AUTOS COME AND GO BUT NOW IT IS IMPERATIVE THAT A GOOD ELECTRIC CAR BE USED,HOWEVER A SOLAR ROOF PANEL SHOULD BE IN USE TO RECHARGE THE BATTERIES WITHOU FEAR OF ELECTRIC FAILURE,,,ELECTRIC IS THE WAY OC THE FUTURE IN THAT WAY YOU WOULD NOT FEAR ELECTRIC STOPPAGE

  • james h.cadoo

    HAVING COME UP FROM THE EARLY20S SAW ELECTRIC AUTOS COME AND GO BUT NOW IT IS IMPERATIVE THAT A GOOD ELECTRIC CAR BE USED,HOWEVER A SOLAR ROOF PANEL SHOULD BE IN USE TO RECHARGE THE BATTERIES WITHOU FEAR OF ELECTRIC FAILURE,,,ELECTRIC IS THE WAY OC THE FUTURE IN THAT WAY YOU WOULD NOT FEAR ELECTRIC STOPPAGE

  • http://www.victorymusclecars.com TomP

    Very interesting technology. I wonder what the costs would be with deploying the technology on the roads and highways.

  • http://www.victorymusclecars.com TomP

    Very interesting technology. I wonder what the costs would be with deploying the technology on the roads and highways.

  • http://www.victorymusclecars.com TomP

    Very interesting technology. I wonder what the costs would be with deploying the technology on the roads and highways.

  • Kristofer

    Might work in a country where roads are maintained. Will never work here in the US. We wait till something falls apart before we appropriate any money for it. This system requires well-maintained road surfaces; we have collapsing bridges.

  • Kristofer

    Might work in a country where roads are maintained. Will never work here in the US. We wait till something falls apart before we appropriate any money for it. This system requires well-maintained road surfaces; we have collapsing bridges.

  • Kristofer

    Might work in a country where roads are maintained. Will never work here in the US. We wait till something falls apart before we appropriate any money for it. This system requires well-maintained road surfaces; we have collapsing bridges.

  • http://www.non-scalable.com NonScalable

    It’s all about investment, right now we build roads and highways as cheaply as possible (excluding the expensive engineering), simply asphalt and cement. Integrating sensors and wiring means a far greater investment, but it must happen if we are to ‘move forward’. Our past (fifty years) has been about growth, literally more cars, more consumers, more consumption. Now we must stop that and refocus our energy to efficiency in place, development.

    Wouldn’t it be possible to place two strips of piezo electric (like wheel distance apart) along with the charging wires, so you regain some small measure of the energy used to move the car forward, might up the net conversion efficiency some percent; maybe it would prove cost effective.

  • http://www.non-scalable.com NonScalable

    It’s all about investment, right now we build roads and highways as cheaply as possible (excluding the expensive engineering), simply asphalt and cement. Integrating sensors and wiring means a far greater investment, but it must happen if we are to ‘move forward’. Our past (fifty years) has been about growth, literally more cars, more consumers, more consumption. Now we must stop that and refocus our energy to efficiency in place, development.

    Wouldn’t it be possible to place two strips of piezo electric (like wheel distance apart) along with the charging wires, so you regain some small measure of the energy used to move the car forward, might up the net conversion efficiency some percent; maybe it would prove cost effective.

  • Radiant

    You can also watch the video on youtube:

  • Radiant

    You can also watch the video on youtube:

  • Radiant

    You can also watch the video on youtube:

  • russ

    German roads (autobahns) are built differently – they come guarantee for a fixed number of years. Much more expensive but generally excellent surfaces.

    I question the patent they claim – I expect this has been patented any number of times. With the present patent system any fool with an idea can file and pay for one so there are too many out there waiting for the opportunity to get rich – with no real work or investment!

  • russ

    German roads (autobahns) are built differently – they come guarantee for a fixed number of years. Much more expensive but generally excellent surfaces.

    I question the patent they claim – I expect this has been patented any number of times. With the present patent system any fool with an idea can file and pay for one so there are too many out there waiting for the opportunity to get rich – with no real work or investment!

  • russ

    German roads (autobahns) are built differently – they come guarantee for a fixed number of years. Much more expensive but generally excellent surfaces.

    I question the patent they claim – I expect this has been patented any number of times. With the present patent system any fool with an idea can file and pay for one so there are too many out there waiting for the opportunity to get rich – with no real work or investment!

  • http://greenoptions.com/author/susan Susan Kraemer

    Do agree, russ, there’s an abundance of “any fool with an idea” patents, but – when it’s a respected supplier of electronics and powertrains to nearly all the major auto companies — for 25 years – I think this could be a serious move.

  • http://greenoptions.com/author/susan Susan Kraemer

    Do agree, russ, there’s an abundance of “any fool with an idea” patents, but – when it’s a respected supplier of electronics and powertrains to nearly all the major auto companies — for 25 years – I think this could be a serious move.

  • Ripe4Change

    does that mean we can just driver for ever and ever.

    Interesting idea, but do we need to make it easier to put more cars on the road? How does that save momma-E?

  • Ripe4Change

    does that mean we can just driver for ever and ever.

    Interesting idea, but do we need to make it easier to put more cars on the road? How does that save momma-E?

  • Ripe4Change

    does that mean we can just driver for ever and ever.

    Interesting idea, but do we need to make it easier to put more cars on the road? How does that save momma-E?

  • Bob Wallace

    Brian – the amount of daytime power pulled from the system can be controlled by time of day pricing. Make the price differential between off-peak and peak electricity large enough and most people will charge at night and use this system for day time range extension.

    Ripe – The Good Mommy gets her butt (and our butts)saved by getting us off fossil fuels and onto renewables.

    If we move to more sustainable vehicle manufacturing (renewable and recyclable materials) and renewable power we can drive a heck of a lot without hurting the Earth.

  • Bob Wallace

    Brian – the amount of daytime power pulled from the system can be controlled by time of day pricing. Make the price differential between off-peak and peak electricity large enough and most people will charge at night and use this system for day time range extension.

    Ripe – The Good Mommy gets her butt (and our butts)saved by getting us off fossil fuels and onto renewables.

    If we move to more sustainable vehicle manufacturing (renewable and recyclable materials) and renewable power we can drive a heck of a lot without hurting the Earth.

  • Bob Wallace

    Brian – the amount of daytime power pulled from the system can be controlled by time of day pricing. Make the price differential between off-peak and peak electricity large enough and most people will charge at night and use this system for day time range extension.

    Ripe – The Good Mommy gets her butt (and our butts)saved by getting us off fossil fuels and onto renewables.

    If we move to more sustainable vehicle manufacturing (renewable and recyclable materials) and renewable power we can drive a heck of a lot without hurting the Earth.

  • hefty

    thats a good ideal. to help save a lot of power at night, all road lights should be kept very dim, but in proximity to the electric car they reach optimal brightness.

    after the car passes, they return to an energy-saving state.

  • hefty

    thats a good ideal. to help save a lot of power at night, all road lights should be kept very dim, but in proximity to the electric car they reach optimal brightness.

    after the car passes, they return to an energy-saving state.

  • http://www.shaunbefort.com Shaun

    First we need affordable electric cars. The Chevy Volt is expected to retail at $40,000.

  • http://www.shaunbefort.com Shaun

    First we need affordable electric cars. The Chevy Volt is expected to retail at $40,000.

  • http://www.shaunbefort.com Shaun

    First we need affordable electric cars. The Chevy Volt is expected to retail at $40,000.

  • Garrett

    I personally dont think this is a very valid solution. It is a good idea, but the advancement in batteries and solar energy will make this obsolete very quickly, and the cost of making our roads(think about just the highway system alone) be able to support this would be outrageous. Most of our roads in the USA come through the States, our states are already cutting back severly right now. By the time enough cars are produced to support this, and the road changes are made, there is going to be something far more cost effective.

  • Garrett

    I personally dont think this is a very valid solution. It is a good idea, but the advancement in batteries and solar energy will make this obsolete very quickly, and the cost of making our roads(think about just the highway system alone) be able to support this would be outrageous. Most of our roads in the USA come through the States, our states are already cutting back severly right now. By the time enough cars are produced to support this, and the road changes are made, there is going to be something far more cost effective.

  • http://GreenPatentBlog Eric

    Susan,

    Do you know the jurisdiction and patent #? Is there an IAV press release about the patent grant?

    Thanks,

    Eric

  • http://Web H2P

    Nice article and quite intriguing. This kind of innovation may be getting closer to reality everyday, however, like the paradoxes that are still inherent between compact car and suv, networked server-client environments, and toy train sets–the sustainability and maintenance costs for the infrastructure to support such an application may not allow on-the-road charging to be relevant. Regional climate and economics may not attract a typical and pragmatic automobile drive to switch to an electric vehicle that may be dependent on a system that may experience unforseen events and outages. Think of your elderly grandmother or mother driving 15 miles outside of downtown, turns off the vehicle, but yet cannot turn it back on later on because there is no charge. Does she push the car onto the road to see if it charges up? Maybe, but then it is an elderly person that you care about and wudn’t want in that kind of situation.

  • http://Web hayden

    Umm whats wrong with a rewoeked alternator? that charges batteries? Also they could use a solar panel on the roof for passive charging.
    Why does everything need to be made so difficult when there are easy solutions to the current problems with electric cars

Back to Top ↑