aatheus
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Joined: Thu Sep 20, 2012 1:53 pm
Delivery Date: 20 Sep 2012

Add ability to adjust charging rate

Mon Feb 04, 2013 1:06 pm

There are times that I would like to be able to charge at a slower rate on L2 (say, during peak time, or if I'm on a circuit with limited capacity). Now that the 6kW charger is standard on 2 of the trims, can we at least get the option to toggle between 3.3kW and 6.6 kW charging rate? Being able to adjust the charging rate in Amps would be even better.

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EVDRIVER
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Joined: Sat Apr 24, 2010 7:51 am

Re: Add ability to adjust charging rate

Mon Feb 04, 2013 1:51 pm

aatheus wrote:There are times that I would like to be able to charge at a slower rate on L2 (say, during peak time, or if I'm on a circuit with limited capacity). Now that the 6kW charger is standard on 2 of the trims, can we at least get the option to toggle between 3.3kW and 6.6 kW charging rate? Being able to adjust the charging rate in Amps would be even better.


An EVSE with an adjustable pilot wil do this. My Think had a switch on the dash for this feature. Nissan does not really think things through.

aatheus
Posts: 26
Joined: Thu Sep 20, 2012 1:53 pm
Delivery Date: 20 Sep 2012

Re: Add ability to adjust charging rate

Mon Feb 04, 2013 1:58 pm

This is true, but I don't know of any public EVSEs that can be adjusted. Do you know of any purchasable EVSEs with adjustable pilots?

DarkStar
Posts: 2065
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Delivery Date: 25 Mar 2011
Leaf Number: 568
Location: Hillsboro, Oregon, USA
Contact: Website

Re: Add ability to adjust charging rate

Mon Feb 04, 2013 2:07 pm

aatheus wrote:This is true, but I don't know of any public EVSEs that can be adjusted. Do you know of any purchasable EVSEs with adjustable pilots?

The Blink can if you know the maintenance password. :roll:
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association

aatheus
Posts: 26
Joined: Thu Sep 20, 2012 1:53 pm
Delivery Date: 20 Sep 2012

Re: Add ability to adjust charging rate

Tue Feb 05, 2013 11:55 am

DarkStar wrote:
aatheus wrote:This is true, but I don't know of any public EVSEs that can be adjusted. Do you know of any purchasable EVSEs with adjustable pilots?

The Blink can if you know the maintenance password. :roll:


"1-2-3-4-5"? That's amazing! That's the same as the combination on my luggage!

MikeD
Posts: 567
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Re: Add ability to adjust charging rate

Tue Feb 05, 2013 1:49 pm

To me it makes more sense to control the charging rate on the EVSE rather than the EV, since it is the EVSE that communicates to the EV what the max charging amps is in the first place.

If I had a 2013 Leaf w/ the 6.6kW on-board charger (instead of my 2011) I would normally only care to be able to adjust the charging rate via my home EVSE (currently a Blink) which I think would be a lot more convenient rather than a Leaf setting. I would change the default charging current from 30a to 16a (I almost always charge to 80%, and it rarely charges more than 3 hr), and if allowed only rarely bump it to something higher (probably 30a) when I was in a hurry. Charging away from a home EVSE I would normally want the maximum charging rate for that Level 2 EVSE (the Leaf will never try to draw more current than it can handle), so that someone else could more quickly use that EVSE when my Leaf finished (and to reduce any charging costs to me based on time).

What are the available amp settings on the residential Blink? Is it 12a, 16a, 24a, and 30a as mentioned in the Blink Installation Manual specifications?

For safety reasons I do not recommend anyone routinely changing their Blink's "Installation Max Amps Input" via a password they shouldn't have access to! I would not be surprised if Ecotality enhances their Blink software to allow a "User Selected Max Amps Input" (but allowing no higher than the "Installation Max Amps Input" set for the installation circuit specifically for safety), but if they don't a default 16a "Installation Max Amps Input" setting seems a good compromise that some 2013 Leaf owners may wish to consider.

KeiJidosha
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Re: Add ability to adjust charging rate

Tue Feb 05, 2013 4:16 pm

aatheus wrote:This is true, but I don't know of any public EVSEs that can be adjusted. Do you know of any purchasable EVSEs with adjustable pilots?

SPX Power Xpress has adjustable pilot setting (it may need it, having a REMA J1772 connector). But this does not let you throttle current down from EVSE advertised rate from the car.

DarkStar
Posts: 2065
Joined: Sat Jul 17, 2010 10:06 am
Delivery Date: 25 Mar 2011
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Re: Add ability to adjust charging rate

Wed Feb 06, 2013 12:19 pm

KeiJidosha wrote:But this does not let you throttle current down from EVSE advertised rate from the car.

What does this sentence even mean? ;)
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association

jstack6
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Re: Add ability to adjust charging rate

Tue Apr 23, 2013 1:49 pm

FYI, Tesla has this feature, you can streach your charge over the low rate period or anytime you want. They can also cut it down so they can use a BLINK that only handles 30 amps or even lower at a friends home that may only have a 20 amp ckt. Someday all EV's will have basic features like that. My 2013 has a few extra options than my 2011 had and each year I expect more.

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gbarry42
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Location: Moonlight Beach

Re: Add ability to adjust charging rate

Tue Apr 23, 2013 2:07 pm

It's my understanding that our favorite ingineer at evseupgrade.com now offers a selectable charge rate on the conversions he does. I just learned about this a few days ago. Here is a quote from the site:
You also get easily programmable amperage settings, so you can "dial it down" if you are on a limited power outlet, or you really want a "trickle" charge, say for example; in airport long-term parking.

That's what I've been waiting for, and I plan to finally get my charge brick upgraded.


Also...
jstack6 wrote:FYI, Tesla has this feature, you can streach your charge over the low rate period or anytime you want. They can also cut it down so they can use a BLINK that only handles 30 amps or even lower at a friends home that may only have a 20 amp ckt. Someday all EV's will have basic features like that. My 2013 has a few extra options than my 2011 had and each year I expect more.

The J1772 protocol (and one of the reasons you pay all that money for something that isn't much more than a wall-plug adapter) works in a way that the car automatically knows not to draw more than the EVSE can handle. There may be some variations when Tesla is involved, since they don't use J1772 directly.
And there goes the first capacity bar! At 24,000 mi on 9/9/2013.
Second bar at 30,500 mi on 2/7/2015.

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