Portable CHAdeMO

[mdbuilder]

I'll take that as a no, you just like to be argumentative and inject red herrings in the form of scientific papers which basically say 'hey, driving your car generates ac ripple which causes the battery to degrade a little faster than in a lab setting with a pure DC load.'

[obrother]

You seem to like to come to conclusions of your own and accuse members on this forum... so you can go on commenting I will just ignore you.

[johnr]

No need to argue over nothing, guys.

Anyway, regarding current ripple, I have no ideas about that - something that's over my head. However, I wonder whether the car's AC inverter driving an AC motor might also generate current ripple during normal operation. Additionally, I tend to think that if there is current ripple from this CHAdeMO unit - and I have no way of knowing whether or not there is - considering that it puts out only 20 amps it seems unlikely that it would have any significant effect. Anyway, I see no sense in speculation - but if there's an engineer on this forum who can test one of these chargers or has empirical knowledge of this matter, I'd welcome an informed discussion.

[mdbuilder]

Exactly, the inverter driving the motor generates ripple. The inverter using the motor as a generator to dynamically brake generates ripple. The dc-dc stepping 300+ down to 12 generates ripple, the charger in the car rectifying dc to ac and stepping up 240 to 400+ volts. Yes, this portable chademo will generate ripple.

Ripple is inherent to the process of converting voltages and driving an ac motor, which is done by converting to dc to ac with solid state switching electronics. There is a built in limit though, the control for ripple are capacitors. If the designer does not use enough capacitors the ripple will kill the switching electronics. Not good for business if your product dies within the first year because there are not enough capacitors.

[Phximiev]

Chademo link:

Link to the product johnr is talking about: https://www.evseadapters.com/en/home/13 ... arger.html

It's $3750. That doesn't include the J1772 adapter, which, I haven't found yet. (For just the $3750 you can hook it up to a NEMA 14-50.)

We have a Turbocord charger with a 6-20 plug. To travel to RV campsites, we needed an adaptor, which I just bought from EVSEadaptors. Its their universal 14-xx adaptor. I'll post my experience with it once received.

[Phximiev]

Speaking of the portable Chademo rental at EVSEAdaptors, here is the link:

https://www.evseadapters.com/en/ev-char ... arger.html

$2,000 refundable deposit plus a daily rate of some amount it appears.

[mdbuilder]

That rental is pretty intriguing. Good way to try it out before you blow 4 grand.

[PV1]

That link didn't take me to the quick charger. It went to their adjustable EVSE cord. Here's the link to the charger, though I didn't see any mention of renting? Maybe because I'm on a mobile device.

https://www.evseadapters.com/en/home/13 ... arger.html

[mdbuilder]

For some odd reason, the address of the page is unpasteable. If you paste it an click the browser is redirected to the $399 evsw

[PV1]

Very interesting, just did the same for me. Apparently, any hyperlink to their site gets re-directed by myelectriccarforums.com to that EVSE. Must be a paid special.

Copy and paste the link below into a new browser tab/window. That should bypass the re-direct and allow you to go to the QC rental.

Code: Select all

http://www.evseadapters.com/en/ev-chargers-evses-/142-rent-a-portable-chademo-or-ccs-quick-charger.html