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Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 8:28 am
by garygid
Sorry, you are correct.
I missed the 60% part. :(

Full charge at 240v/16A is near 8 hours, and near 20 hours at 120v/12A, but these times MIGHT also include some "equilization" time.

QC might be only 15 minutes!
WHERE are the QC stations!!

Good work, Gary

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 9:19 am
by Ingineer
garygid wrote:Sorry, you are correct.
I missed the 60% part. :(

Full charge at 240v/16A is near 8 hours, and near 20 hours at 120v/12A, but these times MIGHT also include some "equilization" time.

QC might be only 15 minutes!
WHERE are the QC stations!!

Good work, Gary


Based on the analysis I did on the CAN bus and using the official Nissan scantool (Consult III+), I believe DC QC is limited to 30kW. (At least it was with a pack around 55 degrees F internal temperature.)

The car I analyzed had it's battery ECU reporting a discharge power limit of 110kW and a charge power limit of 30.34kW. The SOC was around 50% (I have the exact number logged).

It's possible that the charge power limit might increase once the pack warms up, but I have yet to test this.

I'd bet money that at least initially, it's not going over 30.34kW!

-Phil

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 11:29 am
by rawhog
OK. Here is my question. Without getting into the science of it. Ingineers awesome upgrade(which I will buy as soon as I get my car in a week or so. Be cool if I could just take a spin to Beserkely and swap mine for one of his :roll: ), is 1kw less output than most of the L2 EVSE's I have been looking at. What is the difference in typical charging rates?

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 11:49 am
by GeekEV
Using the simplest math, we know the current LEAF's internal charger has a max rate of 3.3Kw. The L1 EVSE has a max draw of 12A, which at the modified 240v works out to 2.88Kw. Therefore, 2.88Kw / 3.3Kw = ~87% of the rate of a "normal" EVSE *for the LEAF*. Obviously the number would be different if used with other cars...

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 1:20 pm
by Ingineer
Thanks G-EV!

He is correct, that's what you should expect.

UPDATE:
We WERE accepting units dropped off/picked up, but this was difficult to handle logistically and are no longer offering this service. In order to keep prices low, we are now only accepting shipped units. For people in the Bay area, this means that if you use UPS shipping it only takes 1 day. So that usually means you can have your EVSE back in your hands 2 days after you ship.

-Phil

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 1:52 pm
by rawhog
Thanks for the feedback guys. So then I can use ~87% of charge times as well I suppose?

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 1:57 pm
by davewill
rawhog wrote:Thanks for the feedback guys. So then I can use ~87% of charge times as well I suppose?

It would probably work better if you used 1/87% or 115%. For example a charge that would take 8 hours on the normal L2 EVSE would take 8/87% or 8*115% or 9.2 hours.

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Tue Mar 29, 2011 6:08 pm
by rawhog
Thank you for that little tidbit DW. Much easier math!! :D

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Fri Apr 01, 2011 10:59 am
by Yanquetino
Here's an obviously novice question. Is Nissan's L1 EVSE designed for the entire planet, but simply "enabled" for 120V (U.S.) or 240V (Europe) when shipped? In other words, does this upgrade simply tap into the European components already inside? Or are they entirely different animals, depending upon the side of the ocean to which the LEAF is destined to be delivered?

I ask because, if it is a "generic" cordset, I suppose that someone visiting Europe could conceivably buy one from a Nissan dealer, bring it home, and swap the plug to accommodate an array of U.S. 240V adaptors. I am probably missing a crucial detail, however. :?

Re: Nissan L1 EVSE third-party upgrade to both 120V and 240V

Posted: Fri Apr 01, 2011 11:19 am
by GeekEV
Ingineer can obviously provide more details, but my understanding is that a majority of the components are shared, with a few that are 120/240 specific. What Ingineer has done with this mod is identify what those are and replaced them with universal parts.