electricCowboy
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Joined: Thu Jan 26, 2017 10:31 pm
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Made a way to take energy out of my car

Sun Mar 08, 2020 11:03 am

I'm going to try and do it with my Energica motorcycle as well. I decided to make a very very silly video to show things working. I have posted others on Facebook and youtube which explained what was happening, but people seemed to miss the forest for the trees when I did that, so this time I went super simple.

I think this sort of thing could be really useful in California where the power outages are all happening.

https://www.youtube.com/watch?v=UqPOQzQoCZQ

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Nubo
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Location: Vallejo, CA

Re: Made a way to take energy out of my car

Sun Mar 08, 2020 1:04 pm

What's it cost? You can already power reasonable loads inexpensively by hooking an inverter to the 12V system.
I noticed you're still working with polymers.

LeftieBiker
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Re: Made a way to take energy out of my car

Sun Mar 08, 2020 1:08 pm

It's a good idea to use the Chademo port, and has been done by Chinese manufacturers. It's all in the implementation and, as Nubo notes, the cost. It also has to be safe. The splices on that transfer switch look pretty dodgy...
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
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PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

jjeff
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Re: Made a way to take energy out of my car

Sun Mar 08, 2020 3:53 pm

I was just holding my breath doing a crosscut on something as large as a 2x4 without a miter pusher thing :shock: much better to use a radial arm or miter box for crosscuts :)
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electricCowboy
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Joined: Thu Jan 26, 2017 10:31 pm
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Re: Made a way to take energy out of my car

Mon Mar 09, 2020 5:34 pm

Thanks for the feedback guys. I don't have a price just yet, we have only made 4 of them to test for now. So far it's going quite well. What do you guys think would be a reasonable cost for something like this?

Right now we limited one unit to 7kw out, 1 to 20kw out, and one, with much larger wires to the vehicles maximum output.

We are going to test a ridiculous idea... charge at free public stations each night and power the shop off of the car all day this way for a month and see how much juice we shuttle around.

LeftieBiker
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Re: Made a way to take energy out of my car

Mon Mar 09, 2020 5:44 pm

7kw would probably serve most needs, but a 10kw limit would probably make more people happier. 20kw is too much strain on a Leaf battery for regular use, I think. They tend to heat up.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Oilpan4
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Re: Made a way to take energy out of my car

Mon Mar 09, 2020 5:48 pm

I sprung for a new, only dropped once forklift battery and an 2kw outback inverter.
It's only 5 to 6kwh depending on discharge rate.
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estomax
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Re: Made a way to take energy out of my car

Wed Mar 11, 2020 8:10 am

that is neat, my take on price, for about 200 bucks you can set up a ~1 kw setup through the DC system of your car to power emergency needs. For a normal house, a 7-10kw system will be viable. If a 20KW system doesn't cost much more, then you can pretty much use this on any house without worrying about timing your loads. My house very rarely goes above 10kw (water heater and clothes dryer on max for example), and i could manually make sure it never does if i had to.

This would be a semi-alternative to a tesla powerwall, which are in the 10+ grand range, but come with the battery obviously. Personally i don't have enough power outages to justify something that steep, but for someone that loses power often, if it was priced only a bit more than a similar output generator, i could see this being viable. That would put it in the 2-5k range, depending on how well it is packaged/integrates with the house.

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HerdingElectrons
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Re: Made a way to take energy out of my car

Wed Mar 11, 2020 9:23 am

I'm very intrigued & a 10-20K seems like it would be great for a power outage for typical household power maintenance needs.
2018 SL Pearl White 4.5/3.9 Warm/Cold weather

09/18, 01K mi: AHr= 114.52 / SOH= 99.20 / HX= 099.70%
04/19, 10K mi: Ahr= 111.45 / SOH= 96.54 / HX= 113.82%
11/19, 20K mi: Ahr= 107.44 / SOH= 93.07 / HX= 109.96%

HerdingElectrons
Posts: 186
Joined: Sat Sep 08, 2018 3:20 pm
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Location: Central Coast, Ca

Re: Made a way to take energy out of my car

Wed Mar 11, 2020 9:25 am

LeftieBiker wrote:
Mon Mar 09, 2020 5:44 pm
7kw would probably serve most needs, but a 10kw limit would probably make more people happier. 20kw is too much strain on a Leaf battery for regular use, I think. They tend to heat up.
Typical freeway cruising is 20-40Kw with 70-90Kw draws for hill climbs not counting initial acceleration. A 20Kw option would allow for something like a A/C to power up but the actual constant load would be much lower like 5-10Kw for a house load with is nothing is terms of C discharge rate any of the leaf packs.

Sustained 30-40Kw will heat up the packs faster than heat can dissipate quite readily which a 20-30min QC session which is around 30-40Kw of energy transfer will readily demonstrate
2018 SL Pearl White 4.5/3.9 Warm/Cold weather

09/18, 01K mi: AHr= 114.52 / SOH= 99.20 / HX= 099.70%
04/19, 10K mi: Ahr= 111.45 / SOH= 96.54 / HX= 113.82%
11/19, 20K mi: Ahr= 107.44 / SOH= 93.07 / HX= 109.96%

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