Mini-QC Rapid-Charger (RC) Project for LEAF QC Port

[TonyWilliams]

Let me understand that you want a J1772 receptacle to CHAdeMO plug, correct?

I should be able to get that for you.

 

[TonyWilliams]

Here's some free public CHAdeMO info posted on the internet:

http://www.chademo.com/wp/wp-content/uploads/pdf/TechnicalWS%282013.02.19%29.pdf" onclick="window.open(this.href);return false;

 

[91040]

Very interesting but it is marked Confidential. Did not find this file on the CHAdeMO website. Would you provide the sequence?

Here's some free public CHAdeMO info posted on the internet:

http://www.chademo.com/wp/wp-content/uploads/pdf/TechnicalWS%282013.02.19%29.pdf" onclick="window.open(this.href);return false;

 

[mwalsh]

Very interesting but it is marked Confidential. Did not find this file on the CHAdeMO website. Would you provide the sequence?

Anything I find with a Google search is far game so far as I'm concerned. If they want to keep stuff confidential, a web server on the Internet is not the place for it.

 

[91040]

I haven't found it with a Google search. That is why I want to know how you get to it from a public source.

Very interesting but it is marked Confidential. Did not find this file on the CHAdeMO website. Would you provide the sequence?

Anything I find with a Google search is far game so far as I'm concerned. If they want to keep stuff confidential, a web server on the Internet is not the place for it.

 

[TonyWilliams]

The correct search found it.

 

[JimSouCal]

Well, I have nothing to add of substance... Meanwhile, my comment is collectively you folks are very strong brew of insightful, smart, educated, clever, perseverant, and socially inclined--really what humanity should aim for in the long run...

 

[hill]

The correct search found it.

I'm saving it anyway ... just in case it goes bye bye.



.

 

[jclemens]

Another challenge:
3D Print a surface-mount J1772 socket (look on thingiverse for J1772),
and supply it with female pins (two power pins, one ground pin, and the
Control Pilot signal pin), suitable for an experimental 30-amp connection.
Getting suitable female pins is the more difficult part, I suspect.

We could configure our Robomo mini-QC unit for the J1772 car-side
handshake (one resistor and one diode would be sufficient, I suspect),
to get 30 amps at 240 volts AC. That 7.2 kW might allow us to demonstrate
charging at near 6.6 kW via the QC port using a public L2 EVSE power source.

One person has a 75 amp EVSE that they really anxious to try out, so a similar
socket with pins suitable for 75 amps would allow a higher-power test.

Eventually we will try using a 100-amp breaker, but the present power
supply is not suitable for much over 12 kW, as I recall.

3d printing the chademo compatible connector is worth the pain because otherwise, it is unobtanium.
3d printing a j1772 connector is somewhat less worth the trouble since there are folks who have already machined some nice ones. see below. Also note that the handshake for j1772 is really really simple, no microcontroller required.

I forgot that many/most Leaf people are not the same as the DIY EV people (I am a previously in the DIY EV group, and I still monitor the developments)
So you may not know about these adapters and inlets for sale.

http://www.tucsonev.com/index.html
90$ for inlet only (without wires) (rated for 70amps)
190$ for nema adapter (rated for 55 amps)

http://modularevpower.com/" onclick="window.open(this.href);return false;
120$ for inlet (sells on ebay)(rated for 75amps)
245$ for nema adapter (rated for 50 amps)

 

[garygid]

Let me understand that you want a J1772 receptacle to CHAdeMO plug, correct?

I should be able to get that for you.

Thanks Tony, but...
No, just a surface mount J1772 socket (which we can already
3D print) with suitable female pins (which we do not know
where to get). This could mount on the metal Power Supply
chassis (or cover) to provide a convenient power-in (from EVSE)
connection.

The other input, for now, would probably be a 10-50P on a short cord,
or a 10-50R on the chassis??

 

[garygid]

DOH!
From these pictures, it appears that the socket has male pins?
I need to go outside and actually look...

 

[garygid]

Just because somebody obtains a document, and illegally
posts it on the Internet, does not automatically make it
legal for others to copy it or even read it.

This is an example of exactly what we are carefully staying
away from, to better maintain our future freedom of action.

Please, DO NOT send documents like this to us.

Pointing out their existence is not illegal, as far as I know.
Knowing that it is there is... at least interesting, and amusing.

Perhaps there will come a time when the full specs are Open.
Probably just too late when the usage become obsolete in
the USA.

With the right mini-QC products on the market, the standard
might actually be un-stoppable.

We encourage Nissan/Chademo to make the specs available
with no constraints, NOW, while there is still a small chance
of saving Chademo in the USA and the EU.

 

[garygid]

How many LEAF owners would pay around $2000 for a portable,
amp-adjustable mini-QC device, capable of up to 11 kW charging?

With the right expertise, we think that should be possible.

 

[mwalsh]

How many LEAF owners would pay around $2000 for a portable,
amp-adjustable mini-QC device, capable of up to 11 kW charging?

With the right expertise, we think that should be possible.

Over buying a new battery pack or fitting a 3.3kW add-on charger? Sure, I would be interested in that. Using what power as a source? Are we still taking about being able to tap a 30A J1772 unit as an option?

 

[mwalsh]

DOH!
From these pictures, it appears that the socket has male pins?
I need to go outside and actually look...

The pictures show the connector you would have on the car. The J1772 plugs in there and then breaks out to a NEMA 14-50. I've seen these used with a NEMA 14-50 to L6-20 splitter cable to power several EVSE Upgrade modded Nissan portable EVSEs. Pretty neat stuff!

 

[garygid]

Mike,
Yes, Tap-an-L2 would seem to be a very useful option.

Believe it or not, back in the early LEAF days, some folks
actually tapped onto the insides of breaker panels!
Barbarian Pioneers, perhaps?

 

[mwalsh]

Mike,
Yes, Tap-an-L2 would seem to be a very useful option.

Believe it or not, back in the early LEAF days, some folks
actually tapped onto the insides of breaker panels!
Barbarian Pioneers, perhaps?

Shush! I still do that.

 

[edatoakrun]

How many LEAF owners would pay around $2000 for a portable,
amp-adjustable mini-QC device, capable of up to 11 kW charging?

With the right expertise, we think that should be possible.

As I've posted many times before, while the initial market would be for portable units (I'd probably buy one today at this price) the potential market for sales to fixed locations could be much greater.

There are, IMO, large numbers of suitable businesses (mainly restaurants) many off of the main highways which have neither the potential electricity sales volumne to justify the much higher installation costs of higher kW DC, nor the need to accelerate charging past this kW level, in order to attract charging/dining customers.

 

[klapauzius]

How many LEAF owners would pay around $2000 for a portable,
amp-adjustable mini-QC device, capable of up to 11 kW charging?

With the right expertise, we think that should be possible.

With the J1772 input, so I can utilize public L2 at 30 amps (or more, if there are any 30+ amp chargers around). Sure!

 

[GregH]

Here's some free public CHAdeMO info posted on the internet:

http://www.chademo.com/wp/wp-content/uploads/pdf/TechnicalWS%282013.02.19%29.pdf" onclick="window.open(this.href);return false;

Hmm. what's that little Mitsubishi 1.5kW V2H setup?