adric22
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Location: Fort Worth, TX

EV specific generator.

Thu Nov 01, 2012 1:53 pm

I know we've had threads before where people have connected portable generators to their EVSE's and charged their leaf, etc.

But I got to thinking today. I think it would be cool if somebody actually manufactured a small generator that was designed specifically for charging EVs and actually had a J1772 cord attached right to the generator. I also wonder how small it might be possible to make such a thing so that it would be easy to carry in the hatchback of a Leaf or other EV.

Most of the time I'm going outside of my EV range, it is usually not that far outside of the range. I'm also usually going to be somewhere for quite some time, but there is simply nowhere to charge. For example on Saturday I'm going to be driving from Ft.Worth to Plano and it will probably be around 100 miles round trip. If there were a charging station where I was going, the trip would be no problem. But there is not. But if I had a small convenient generator I could pull out, then I could charge for several hours and return home.

Sure...I could buy a generator now, but my EVSE is just the standard 120V. I'd have to also get the EVSE upgrade to really make use of that. Plus I'd have to get a larger generator to get 240V because the smaller ones typically only output 120V. So yeah.. if there were a custom made generator that put out 240V at maybe 12 amps or more that was really small and designed to be carried in the back of a leaf with a J1772 cord already on it... that would actually be something I'd buy if it were a decent price.
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KJD
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Re: EV specific generator.

Thu Nov 01, 2012 2:43 pm

The Recargo site showed several within 10 miles of Plano TX

Charging Sites nearest to: Plano, TX, USA:

Distance Site Chargers Last Visit Status
0.6 mi Twin Peaks Plano
Plano, TX 75074 J-1772 no reports Unverified Details
3.6 mi Courtesy Nissan
Richardson, TX 75080 J-1772 no reports Operational Details
3.6 mi Texas Instruments Collins Boulevard Facility
Richardson, Texas 75081 NEMA 5-20R
J-1772 no reports Operational Details
3.6 mi Telecore
Richardson, TX 75081 J-1772 no reports Operational Details
3.8 mi UT Dallas Student Services Building Lot K
Richardson, TX 75080-3021 J-1772 no reports Operational Details
3.9 mi UT Dallas Activities & Recreation Center Lot J
Richardson, TX 75080 J-1772 no reports Operational Details
3.9 mi UT Dallas Clark Center Lot I
Richardson, TX 75080 J-1772 no reports Operational Details
4.1 mi UT Dallas Research & Operations Center
Richardson, TX 75080 J-1772 no reports Operational Details
4.8 mi Huffhines Recreation Center
Richardson, Texas 75081 NEMA 5-20R
J-1772 no reports Operational Details
4.9 mi Watters Creek at Montgomery Farm
Allen, TX 75013 J-1772 no reports Unverified Details
5.5 mi Courtyard Dallas
Plano, TX 75093 J-1772 no reports Operational Details
5.7 mi Comfort Inn near Plano Medical Center
Plano, TX 75093 J-1772 no reports Operational Details
7.1 mi Hollabaugh Rec Center
Garland, TX 75042 J-1772 no reports Operational Details
7.4 mi Kroger
Plano, TX 75025 J-1772 no reports Operational Details
7.8 mi Cinemark
Plano, TX 75093 J-1772 no reports Operational Details
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adric22
Posts: 2488
Joined: Fri Apr 23, 2010 2:40 pm
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Location: Fort Worth, TX

Re: EV specific generator.

Thu Nov 01, 2012 3:21 pm

KJD wrote:The Recargo site showed several within 10 miles of Plano TX
Yes, but there are none near the convention center. I'm not going to ask my entire family to walk over a mile from the nearest station. If it were just me, I might consider it since I normally walk for exercise anyway.
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KJD
Posts: 1348
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Contact: Website

Re: EV specific generator.

Thu Nov 01, 2012 3:38 pm

Ya I hear you about the exercise. I often put the mountain bike in the back of the LEAF and then use the bike to get that last mile to destination.

As far as the generator, if you get one that is large enough to do 240 volts then its really to big to put in the cargo area easily. You could put it on a small trailer and I have looked into that. Then just use the EVSE upgrade to plug into the generator.

The main drawback to this idea is the cost of the gen set. See Honda EU-6500

http://www.sunelec.com/generators-c-12.html" onclick="window.open(this.href);return false;
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hill
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Re: EV specific generator.

Thu Nov 01, 2012 4:02 pm

I have the Honda 6500 - and when I run it for maintenance purposes, I do charge the Leaf, so I'm not just wasting the gas (or propane or natural gas - I've mod'ed it to run on 3 fuels). I suppose it's just barely able to fit in the leaf. What makes it a tight fit is that it's baffled so that it'll run reasonably quiet.

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ebill3
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Re: EV specific generator.

Thu Nov 01, 2012 4:07 pm

Can you settle for Harbor Freight quality?

For under $400 you can get your 240 volts at 12 Amps. But, oil and fuel will make it weigh ~130 pounds - a bit much to hoist over the trunk lip.

http://www.harborfreight.com/engines-ge ... 69728.html
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Herm
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Re: EV specific generator.

Thu Nov 01, 2012 4:35 pm

It can be done.. perhaps 60lbs for my proposed 3.3kW generator:

Since there are no reasons to have a pure sine wave output or even run it a 60Hz, the generator could be made smaller than usual.. since you will be charging on the side of the road then a small muffler would suffice. Instead of using gasoline use those screw-on small propane tanks intended for camping stoves (1lb propane, about 2.5kWh of energy if the engine is very efficient).. no smell of gasoline in your car and no chance of spillage. There are adapters available if you want to use a standard 20lb tank of barbecue gas. Can you refill those small tanks at home?

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davewill
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Location: San Diego, CA, US

Re: EV specific generator.

Thu Nov 01, 2012 5:08 pm

Not sure I see a good reason to integrate the J1772. It's too easy to simply get the EVSE upgrade, and both devices are then usable separately.
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LTLFTcomposite
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Leaf Number: 5926
Location: Central FL

Re: EV specific generator.

Thu Nov 01, 2012 5:27 pm

This would make a great product. Target the size and weight of a Honda EU 2000. OK you probably can't hit that target, but you could at least aim for it.
LTL
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smkettner
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Re: EV specific generator.

Thu Nov 01, 2012 9:45 pm

Just take the Prius or the Volt.
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