Electronics > Power/Renewable Energy/EV's

Zappi 7kW EV Charger Installation

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EEVblog:
Hub now installed.
https://twitter.com/posnoski/status/1465572683131674624

I really don't get the hub at all, why use it?
Sure it now allows you to look at your charge rate and solar production on your phone. But anyone who buys a Zappi already has solar, and almost certainly an energy monitoring system along with it (I have 3 systems!, Zappi makes it 4). So,  :-//

And tracking your charge on your phone is kinda pointless, why would you bother?

I see zero benefit in keeping it installed. Might as well just put it in a draw and only use again if I need a firmware update. They should have added Ethenet and/or Wifi directly into the Zappi.

Ed.Kloonk:
If you're worried about the 6 mil copper, what's the power factor like on that thing?

I'd be sticking a current probe on the red one and having a look at the waveform: slow charge, fast charge, charging from the grid vs the inverter. We can work out how hot the wire will get once we know the extent of amperage due to a wonky waveform not just rely on the wattage values.

Faringdon:
There is some of the reasoning behind the Hub here..
https://myenergi.com/product/hub/

Red Squirrel:
It's really great to learn that this is something that is possible, to control the charge rate from the charger itself, opens lot of doors for renewable energy use like in this case with the solar.  I plan to build an off grid homestead and was kind of wondering if it's possible to control how much power the car draws, and the fact that it's a simple PWM signal makes it very simple if I wanted to design my own charger even.  I suppose this works with level 1 charging to with 120v right?  Can you get it down to like say, 100w if you really wanted to, or is there a hard minimum?  Maybe not with that particular charger, but like with the standard in general?

I don't have an EV yet myself but that will probably be my next major purchase.  I just need to pay off my land first...  and then save up.  Hopefully the prices come down in the next couple years.  I really want a truck, but I will settle for a SUV if it can tow a small trailer. 

uer166:

--- Quote from: Ed.Kloonk on November 30, 2021, 10:19:34 am ---If you're worried about the 6 mil copper, what's the power factor like on that thing?

I'd be sticking a current probe on the red one and having a look at the waveform: slow charge, fast charge, charging from the grid vs the inverter. We can work out how hot the wire will get once we know the extent of amperage due to a wonky waveform not just rely on the wattage values.

--- End quote ---

Pretty close to 1, all on board chargers in vehicles have pretty good PFC with hard limits on harmonic content, so it wouldn't be a problem. Isn't daves' inverter grid tied? I.e. "charging from inverter" doesn't make any sense in context, it's always "charging from grid"..

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