camasleaf
Posts: 610
Joined: Sun Sep 26, 2010 5:20 am
Delivery Date: 17 Jun 2011
Location: Camas, WA

DC charging on wheels. Charge while driving.

Wed Aug 13, 2014 10:31 am

I dream of the day when while I am driving my EV on the freeway to go from Seattle to Disney and the battery gets the LBW. All of the sudden a big truck labeled "The Ultimate Range Extender" and loaded with fast spinning electrons pulls in front of me and a connector starts to unreel of the back of the truck. My car goes on auto pilot and the charging port door opens. The car maneuvers by itself to receive the connector and it starts charging. 30 minutes later I am back to 80% and ready for another 200 miles of driving without stopping.

The technology is already available and the Leaf already has the charging port in the front :D .
2011 SLe 06/17/11 Over 76000 miles 71%SOH 15.7kWh
2015 SV 09/02/14, Over 36000 miles soon to be returned for a 2018
5.7kW DC System

mctom987
Posts: 333
Joined: Wed Jun 25, 2014 6:52 pm
Delivery Date: 29 May 2014
Leaf Number: 332755
Location: San José

Re: DC charging on wheels. Charge while driving.

Wed Aug 13, 2014 10:39 am

This sounds like the way that jets refuel mid-flight. Works in the circumstances, but incredibly tricky, and requires zero interference.


Another option is solar panels on the car. The problem with charging while moving is the footprint. The car is just too small.
Even with 100% efficient solar panels, you're only looking at ~5kW power. Better than nothing, sure. But most people don't want to hobble around at 20MPH. And again, that's with 100% efficiency. Most panels are 15-18% efficient. Add to the fact that not all of the car is ever facing the perfect angle to the sun, and you're looking at like 500W power, tops.

It's certainly doable, but we need a massive change in perspective and driving habits to make it feasible. Also, don't expect to move a 2-ton car >5MPH with 500W.
Last edited by mctom987 on Wed Aug 13, 2014 10:41 am, edited 1 time in total.
2014 Green Leaf SL +PP
June: 580.6 mi, 4.7mi/kWh
July: 1443.8mi, 4.8mi/kWh
Aug: 1157.9mi, 5.1mi/kWh

Graffi
Posts: 405
Joined: Wed Nov 27, 2013 12:01 pm
Delivery Date: 06 Sep 2013
Leaf Number: 414757
Location: San Diego, CA

Re: DC charging on wheels. Charge while driving.

Wed Aug 13, 2014 10:41 am

Interesting thought, but our human body does need a break from sitting and driving. When we go on trips we try to stop every 1 to 1.5 hours, potty break, top off tank, if needed, etc. Walk around for at least 10 minutes.

If the DCQC network is available, then long distance travel with an EV would work. Until that day, let's just enjoy our WONDERFUL daily commuter vehicle for all our local driving. As it is we are on track to use all of our 15,000 miles per year allowance on our 3-year lease with just local driving, with almost all our charging being done in our garage with the installed 240v/30a EVSE on a 40a circuit.
2013 SL Metalic Slate - We LOVE our Leaf
MFG 08/13 Dlv 09/06/13 @ 10 mi
# 77 100 mile club
# 10 200 km club

2017 Tesla S 75D Pearl White
Delivered 5/16/17 @ 900 mi
Tesla Model 3 on order awaiting 200+ mile range Nissan Leaf

Staque
Posts: 119
Joined: Mon Apr 22, 2013 7:11 am
Delivery Date: 24 Apr 2013
Location: Albany, NY

Re: DC charging on wheels. Charge while driving.

Thu Aug 14, 2014 5:44 am

If you want to do this while you're moving, you don't need DC at all. Just have a pickup truck pull your leaf and regen at nearly 30KW.

pkulak
Posts: 756
Joined: Thu Sep 19, 2013 4:08 pm
Delivery Date: 18 Sep 2013
Location: Portland, OR

Re: DC charging on wheels. Charge while driving.

Thu Aug 14, 2014 7:17 am

Or just put in some more batteries until you have 300 miles of range and stop every 5 hours.

User avatar
EVDRIVER
Posts: 5873
Joined: Sat Apr 24, 2010 7:51 am

Re: DC charging on wheels. Charge while driving.

Thu Aug 14, 2014 7:56 am

mctom987 wrote:
Another option is solar panels on the car. The problem with charging while moving is the footprint. The car is just too small.
Even with 100% efficient solar panels, you're only looking at ~5kW power. Better than nothing, sure. But most people don't want to hobble around at 20MPH. And again, that's with 100% efficiency. Most panels are 15-18% efficient. Add to the fact that not all of the car is ever facing the perfect angle to the sun, and you're looking at like 500W power, tops.

It's certainly doable, but we need a massive change in perspective and driving habits to make it feasible. Also, don't expect to move a 2-ton car >5MPH with 500W.


How is something an option or doable if it does not work even with driving habit changes? The change in perspective is walking and the solar won't move the car one inch under the best conditions.

johnrhansen
Posts: 1100
Joined: Mon Aug 12, 2013 7:23 pm
Delivery Date: 15 Jun 2013
Leaf Number: 409445
Location: Seattle, WA

Re: DC charging on wheels. Charge while driving.

Sat Aug 16, 2014 7:04 am

I read once about a special car carrying system controlled by a computer that grabs your car from the top, lifts it, and then carrys it along at a very high speed. At the station closest to your destination it lets you off, and you drive the rest of the way on the batteries that were charging while the system was carrying you. I think it makes a lot of sense especially if there is no road. It would probably be cheaper to build this than another interstate highway system.
2013 S model with quick charge package.
AV 30 amp level 2 EVSE, Bosch PowerMax 30 Amp EVSE, EVSE upgraded EVSE.

User avatar
hill
Gold Member
Posts: 1865
Joined: Wed Apr 21, 2010 4:05 pm
Delivery Date: 27 Mar 2011
Leaf Number: 0659
Location: Lake Forest, CA

Re: DC charging on wheels. Charge while driving.

Sat Aug 16, 2014 7:43 am

camasleaf wrote:I dream of the day when while I am driving my EV on the freeway to go from Seattle to Disney and the battery gets the LBW. All of the sudden a big truck labeled "The Ultimate Range Extender" and loaded with fast spinning electrons pulls in front of me and a connector starts to unreel of the back of the truck. My car goes on auto pilot and the charging port door opens. The car maneuvers by itself to receive the connector and it starts charging. 30 minutes later I am back to 80% and ready for another 200 miles of driving without stopping.......snip......
It's already been done. I've seen that someone posted pic's on the web. You tow the Leaf behind another vehicle while in drive, foot off the pedal . . . . it's called 'regen'.
:D


derkraut
Posts: 1494
Joined: Fri Jul 16, 2010 7:39 pm
Delivery Date: 14 Jun 2011
Leaf Number: 004248
Location: San Diego vicinity

Re: DC charging on wheels. Charge while driving.

Sat Aug 16, 2014 7:57 am

And that tow vehicle is being powered by???? :roll:
Derkraut
Color: Cayenne SLE, ETEC trim
reserved: 5/15/2010
Leaf del. 6/14/2011
New Traction battery installed on 7/28/2017: 12 bars @37.4K+mi. 100% charge: DD readings: Bat temp 81.3F, Gids=283, S=94.1, C=66.13, H=99.79 394V :)

minispeed
Posts: 681
Joined: Sun Jul 06, 2014 4:52 am
Delivery Date: 15 Jul 2014
Location: Ancaster, ON

Re: DC charging on wheels. Charge while driving.

Sat Aug 16, 2014 9:48 am

I'd rather have a road trip trailer option. You could provide 2 options, extra battery only or extra battery and/or generator. It could be gas, diesel or preferably propane. If it's propane you could even offer it with a grill on the back for camping. It could even have a fuel cell if hydrogen does take off the way Toyota and Honda think it will. You could also then use the top as a cargo rack which would be more efficeint than putting a roof rack on top of the car.


On a side note if hydrogen does take off it would be unlimited range for road trips and still fill at home overnight for commutes. The best of both worlds and all zero emmisions.
2015 White SV, after one month 292 GIDS
Best 1 charge drive, 229km (143miles)

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