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View Full Version : Who needs big batteries? Kick gas & kick big heavy batteries. ;)



BoneFire
29 July 2011, 1328
I've read recent research (http://prb.aps.org/abstract/PRB/v83/i20/e205114)articles (http://energydynamicslab.com/news/2011/jun30-ev-ksl)about the efficiency of inductive charging systems nearing the efficiency of a plugin socket. Looks like electrified race tracks might pave the way (lolz) for this technology to become mainstreet.

From an article in Gizmag: (http://www.gizmag.com/dynamic-charging-for-electric-race-cars/19344/?utm_source=Gizmag+Subscribers&utm_campaign=69a480c44f-UA-2235360-4&utm_medium=email) "Dynamic charging might let electric race cars juice up while moving"



Dynamic wireless charging will be a real game-changer, enabling zero emission electric vehicles to race over long periods without the need for heavy batteries," said Lord Paul Drayson, co-founder of Drayson Racing. "We're looking forward to putting this technology through its paces as it charges electric race cars at speeds of up to 200 mph.

HighlanderMWC
01 August 2011, 1124
This makes me think of the toy race cars with the slot in the track.

billmi
01 August 2011, 1304
The concept of in-road inductive charging has been around for quite a while, but there's something I'd never considered before. Parked, it's a straightforward process but move the pickup coil relative to the supply coils, and you're getting into the territory of a linear motor/generator. I wonder what drag/propulsion effects might come into play.

BoneFire
01 August 2011, 1358
A little info ABOUT DRAYSON RACING (http://www.draysonracing.com/news/publish/2011/Drayson_Racing_Goes_Electric2.shtml)

Lord Drayson, a former science entrepreneur and the UK Minister for Science and Innovation in the previous government, formed Drayson Racing to act as a racing laboratory, pioneering the research and development of green technologies in the challenging environment of motor racing.

Drayson Racing carries out research & development of green racing technologies including electric vehicles and advanced biofuels. Last year Drayson Racing came third in the Intercontinental Le Mans Cup (ILMC) Championship racing a unique 2nd generation bioethanol fuelled LMP1 Lola-Judd racing car and was the first team to achieve pole position and an overall race win for a bio-ethanol fuelled race car.

DaveAK
01 August 2011, 1436
This makes me think of the toy race cars with the slot in the track.
Who's going to picking them up and putting them back on the track when they go shooting off the banking? :D

BoneFire
01 August 2011, 1515
Who's going to picking them up and putting them back on the track when they go shooting off the banking? :D

That would be a job for the good Lord Drayson. ;)

BoneFire
10 August 2011, 2042
Here's a recent article about a NZ company, HaloIPT (http://www.haloipt.com/#n_home-intro), that is partnerned with Drayson racing to develop this technology for racing and commercial use.

"HaloIPT Revs Up For Wirelessly Charged Electric Cars (http://www.washingtonpost.com/business/technology/haloipt-revs-up-for-wirelessly-charged-electric-cars/2011/08/01/gIQA7tOlnI_story.html)"

HaloIPT also has several videos on YT (http://youtu.be/0it7Fk_nz0U) that have some interesting info in their description boxes, such as:


The HaloIPT advantage:
Very high efficiency -- same as hard wired - demonstrated to match conventional plug-and-cable.
Very low magnetic field emission -- conforms to ICNIRP guidelines. No EMI into vehicle.
Commercial systems to 60kW in operation for buses and larger vehicles.
3kW 'small-car system' in operation on London vehicles.
7kW 'large-car system' operating on premium electric vehicle launched in Geneva Motor Show
New 18KW products nearing release.
Very large gap between vehicle and pad -- up to 400mm. 'Smart' tolerance to varying gap.
Lateral alignment between vehicle and pad plus or minus 250mm with minimal loss of efficiency.
Same on-car versatile system for slow and fast charge (e.g. 3 & 7kW)
Small form factor pads, lighter & more easily packaged into vehicle (600mm x 400mm x 30mm for 3.3kW)
Simultaneous wireless data exchange with vehicle.
No moving parts or physical contacts - high reliability