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Re: A peek at the Leaf's Charger

Posted: Thu Oct 04, 2012 6:03 am
by electronit
TimeHorse wrote:But wasn't someone saying they hated all the non-charger related talk? Heavens forbid we don't go back there and get flamed again and what I'm curious about is how Ingineer did it: how do you push another 3.3kW into the battery pack from the front of the car?
I did mention the chargers ;-). But you're right. I'd love to know how it works ! Particularly how you control the extra chargers (through the CAN BUS I assume - which is why it depends on LEAFSCAN) ? Anyway, I'd be tempted to order a couple of those chargers, but I think it would be a hefty investment !

Re: A peek at the Leaf's Charger

Posted: Thu Oct 04, 2012 6:06 am
by RegGuheert
TimeHorse wrote:In the US it's rare that anyone has 3-phase, even businesses.
In fact, there isn't even three-phase power running down the road by our house. The closest three-phase power is about one-half mile away, and that is a recent development. Before that, it was about two miles away.

Re: A peek at the Leaf's Charger

Posted: Thu Oct 04, 2012 10:28 am
by davewill
TimeHorse wrote:...Heavens forbid we don't go back there and get flamed again and what I'm curious about is how Ingineer did it: how do you push another 3.3kW into the battery pack from the front of the car? Use the existing drive lines via the regenerative breaking? Is that why the cautionary about not going over 10kW because that's the max those lines take in the forward (non-regenerative) direction? If so, that's bloody clever! Bravo!
It shouldn't be too much of a mystery. The HV bus connects under the hood to both the inverter and the DC-to-DC converter. I'm sure finding a connection to use wasn't that hard.

Re: A peek at the Leaf's Charger

Posted: Thu Oct 04, 2012 10:31 am
by TonyWilliams
TimeHorse wrote:there's no way that's ever gonna be 3-phase and thus no way I'm ever gonna have a home DC Fast Charger.
My DC fast charger will be operational at my house in about one month... on 80 - 150 amp 240 volt.

Re: A peek at the Leaf's Charger

Posted: Thu Oct 04, 2012 10:37 am
by TimeHorse
TonyWilliams wrote:
TimeHorse wrote:there's no way that's ever gonna be 3-phase and thus no way I'm ever gonna have a home DC Fast Charger.
My DC fast charger will be operational at my house in about one month... on 80 - 150 amp 240 volt.
Hope you put the plans and circuit diagrams for it on the Wiki. :)

Re: A peek at the Leaf's Charger

Posted: Thu Oct 04, 2012 7:49 pm
by Ingineer
In my experience, MOST businesses in the US DO in fact, have 3-phase. Residential areas do not. (with MDU's being the exception)

-Phil

Re: A peek at the Leaf's Charger

Posted: Fri Oct 05, 2012 7:46 am
by TimeHorse
Ingineer wrote:In my experience, MOST businesses in the US DO in fact, have 3-phase. Residential areas do not. (with MDU's being the exception)

-Phil
I find it less common here but either way, all I'd really wish for is 3-Phase at the highway rest areas where we already have gasoline stations.

Re: A peek at the Leaf's Charger

Posted: Sun Oct 07, 2012 9:56 am
by QueenBee
Ingineer wrote:It's also designed such that in the unlikely event something goes wrong with it, that the original charging system is unaffected. Reliability was my top concern after safety. Unfortunately because I am using the best parts available to meet these goals, it's not cheap. .....
The upgrade is designed to be very reliable and safe, and to respect all limits and safeties in the Leaf's existing design, but it's still a modification. Nissan could give you a raft of flak if you try to make a warranty claim even though from a technical and engineering standpoint they wouldn't have a leg to stand on. Of course it can be easily removed without much effort.
So Phil mind sharing how you connected to the J1772 inlet?

Re: A peek at the Leaf's Charger

Posted: Sun Oct 07, 2012 3:14 pm
by TEG
Some more questions about the add-on charger 6.7kW upgrade:

Will the ad-on charger follow the charge schedule of the on-board timer?
For instance, if you set to charge to 80%, stopping at 5AM, will both chargers stop charging at 5AM? ( I would assume so, but just checking. )

Has the add-on charger (6.7kW total) been tested successfully on all major brands of EVSEs? Blink, ChargePoint, SEMAconnect, AeroVironment, etc.?

If you charge the car from an EVSEupgrade 12A or 16A portable EVSE what happens? Is the 2nd charger smart enough to "stand down" when there isn't a high enough ampacity signal, or is it up to the 'driver' to manually turn down the charge rate (disable the add-on) so the car doesn't doesn't pull more than 12A/16A through the J1772 ?

Re: A peek at the Leaf's Charger

Posted: Sun Oct 07, 2012 8:39 pm
by abasile
I just got around to reading about Phil's 6.7 kW charger upgrade. Assuming the price is not terribly high (could the kit be about $1000, or would it have to be more?), this would be of great utility to us! To me, this is much more interesting than even the LEAFScan (though I understand the latter is a prerequisite). Even without DC fast chargers everywhere, our LEAF would become significantly easier to take on longer drives. :-)