All that makes sense to me.I just thought this was the right forum, because I assume that DIY builders also want to make their cars compatible with public EV charging stations, and given that batteries can have different voltages, it might be possible to buy a properly certified EV solution that could provide a low-voltage, for example for motorcycles which I presume have smaller batteries and there also lower voltages.
Matt, you're my spirit animalI would just use a normal 120v 15A plug. That's 1800 watts. Close enough.
You can build your own (well, 800-1000 watts anyway, otherwise would need 2) from an old microwave and about a $2 rectifier. It'd probably take an hour or two.
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Alternatively, if you want something different and free built out of junk, get a 2hp electric motor and a car alterantor to two, mechanically strap the two together and the alternator should automatically become a charger. Ghetto as all hell, but, if you're stealing power, meh, you're already aboard that train.
Good Christ do not sell or even give away a home-made fire hazard made from a rewound microwave oven transformer. When you build something you generally understand it and the risks and can stay on top of it.But it's a lot of hobby work, that doesn't easily translate into a mass market product![]()
https://www.youtube.com/playlist?list=PL2FD9A01DD3B7A5D7The microwave idea is also interesting. I didn't know that they have such transformers. But I think they're both quite noisy :/
This is a variation of what are called rotary converters:https://en.wikipedia.org/wiki/Rotary_converter. It would be kind-of heavy and not very efficient. You could incorporate it on the same frame unit with a belt drive gas engine. Just switch the belts that drive the alternator(s) from the gas engine to the electric motor depending on how you wanted to charge your batteries. Again-heavy, noisy, inefficient.Alternatively, if you want something different and free built out of junk, get a 2hp electric motor and a car alterantor to two, mechanically strap the two together and the alternator should automatically become a charger. Ghetto as all hell, but, if you're stealing power, meh, you're already aboard that train.
Although the battery is LiFePO4, the charger doesn't need to be specifically for this application - it just needs an adjustable output.I'm using LiFePO4 cells, where the discharge voltage is typically ~13.0V, and charge voltage is typically 13.5V, although ~12.5 in the first 5% SoC and 13.8-14.4V at last 5%.
Typically I stop charging at 14.0V to avoid full SoC for longevity. (homemade charger using Arduino and a relay turning off the charger).
You're lucky that although the cost per unit energy is excessive, there is no time factor. Draw power at a low enough level, and that's cheap parking even if you don't need the energy.The price is about 0.28 USD per kWh, with free parking during charging.
Euro 240V can be single-phase or three phase. North American 240V domestic service is split-phase, meaning that it is 240 V between the two lines, with a neutral so you can have two out-of-phase 120 V supplies from the same source; homes don't get any 3-phase power here. North American RV "50 amp" service is the same 240 V split-phase; the receptacle used is even the same NEMA 14-50 as used for a typical residential kitchen range.IOW does that EV 240V have the same characteristics as Euro home / mains current, or the 240V you find at RV campgrounds and marina power poles?
This is amazing! Has anyone managed to find a commercial supplier for this type of device, please? I've reached out to Damien and asked if he could put me in touch with the person (Matija) who supplied it.The product at the end of Damien's video here my be of interest to you for powering off type 2 chargers
I kind of assumed that the stations were meant to offer people an alternative to fossil fuels. While I understand the primary and original intention was for electric/hybrid cars, I also assume that as long as they aren't in the way most people that want to push renewable energy would rather someone do this rather then burn a bunch of fuel in a generator. just my opinion.First off, they are for EV use only, IOW it's stealing.
Second you can actually get in trouble.
Third, no there isn't simple gear for this, and you'd have to ask elsewhere for DIY help.
Note those high voltages can be deadly.
... may not have been clear.IOW does that EV 240V have the same characteristics as Euro home / mains current, or the 240V you find at RV campgrounds and marina power poles?
So in summary, since North American EV charging uses the 240 V supply (at level 2) as single phase (the neutral is not used), it is the same as European 240 V single-phase power... except for the difference in frequency (60 Hz in NA, 50 Hz in Europe). Most modern electronic equipment doesn't care about frequency (many computer power supplies with work with anything from about 100V to 250V, at any frequency from DC to at least 60 Hz), which is why equipment can universally work on ~240V (or even ~100V to ~250V) power worldwide.Euro 240V can be single-phase or three phase. North American 240V domestic service is split-phase, meaning that it is 240 V between the two lines, with a neutral so you can have two out-of-phase 120 V supplies from the same source; homes don't get any 3-phase power here. North American RV "50 amp" service is the same 240 V split-phase; the receptacle used is even the same NEMA 14-50 as used for a typical residential kitchen range.