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TonyWilliams
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Thu Oct 27, 2011 1:59 pm

Ok, not the most efficient, but this is technology available NOW:

http://www.mynissanleaf.com/viewtopic.p ... 98#p133198" onclick="window.open(this.href);return false;

"I am able to go longer ranges by plugging in my 3.3 kWh LeFePO4 battery pack in the back and charge while I am stopped at work or lunch to recharge the main battery. I simply convert the battery to 120 VAC and use the Nissan L1 charger supplied with the Leaf. I gain 1 to 2 bars on the SOC graph by setting the charge time on the battery pak to 3 or 4 hours. It is a great feeling to not worry about being stranded since I know I have spare power in the back. No range anexity."

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abasile
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Delivery Date: 20 Apr 2011
Location: Arrowbear Lake, CA

Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Thu Oct 27, 2011 4:06 pm

TonyWilliams wrote:Ok, not the most efficient, but this is technology available NOW:

http://www.mynissanleaf.com/viewtopic.p ... 98#p133198" onclick="window.open(this.href);return false;

"I am able to go longer ranges by plugging in my 3.3 kWh LeFePO4 battery pack in the back and charge while I am stopped at work or lunch to recharge the main battery. I simply convert the battery to 120 VAC and use the Nissan L1 charger supplied with the Leaf. I gain 1 to 2 bars on the SOC graph by setting the charge time on the battery pak to 3 or 4 hours. It is a great feeling to not worry about being stranded since I know I have spare power in the back. No range anexity."
Great idea! Create your own "opportunity charging". Of course, using a 240 V inverter capable of 3.8 kW would be even better.
2011 LEAF at 71K miles, pre-owned 2012 Tesla S 85 at 98K miles
LEAF battery: 9/12 bars and < 49 Ah (-28% vs. new)
Tesla battery: 250+ miles of range (-5% vs. new)

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EVDRIVER
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Thu Oct 27, 2011 5:05 pm

It would be far more efficient and faster to send 240V DC to the Nissan Modified EVSE and to the L2 port for full charge speed. I think this will work and I will validate it and get back to you.

Caracalover
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Leaf Number: 0567
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Sat Oct 29, 2011 3:25 pm

EVDRIVER wrote:It would be far more efficient and faster to send 240V DC to the Nissan Modified EVSE and to the L2 port for full charge speed. I think this will work and I will validate it and get back to you.
Looking forward to that.
26,000 miles on Silver Leaf
wildcatzoo.org drive there on Sunday across a big mountain, sorry no public charging at this time.
Looking for grants to put in solar port so perhaps in the future...

Caracalover
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Sat Oct 29, 2011 3:27 pm

EVDRIVER wrote:It would be far more efficient and faster to send 240V DC to the Nissan Modified EVSE and to the L2 port for full charge speed. I think this will work and I will validate it and get back to you.
Links on the type of battery and how to on making the connection would be great too, but I know I ask too much.
26,000 miles on Silver Leaf
wildcatzoo.org drive there on Sunday across a big mountain, sorry no public charging at this time.
Looking for grants to put in solar port so perhaps in the future...

Volusiano
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Sat Oct 29, 2011 3:29 pm

EVDRIVER wrote:It would be far more efficient and faster to send 240V DC to the Nissan Modified EVSE and to the L2 port for full charge speed. I think this will work and I will validate it and get back to you.
I didn't realize that the Panasonic modified EVSE by Phil can take 240V DC input beside AC. That's pretty cool.

jclemens
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Location: Mississauga
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Tue Dec 20, 2011 3:47 pm

Has any actually tried putting DC into the onboard charger yet?
Does it work?
Volusiano wrote:
EVDRIVER wrote:It would be far more efficient and faster to send 240V DC to the Nissan Modified EVSE and to the L2 port for full charge speed. I think this will work and I will validate it and get back to you.
I didn't realize that the Panasonic modified EVSE by Phil can take 240V DC input beside AC. That's pretty cool.
Interested in a j1772 dummy inlet to hang your EVSE when not charging?
PM me for details. or see http://erroneus.myevblog.com/buy-plastic-parts-here/

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GeekEV
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Tue Dec 20, 2011 5:21 pm

In one of the threads discussing Phil's (aka Ingineer) turbine powered range extender, I believe he indicated that he could tap directly into a harness (and even included pictures) between the battery and the powertrain and the LEAFs computers were smart enough to handle it as long as you didn't go over 30kW extra power. I'd find the reference for you, but I'm mobile right now. I could be remembering wrong, or misinterpreting, so do your own research first!!!

2014 Chevy Spark EV 2LT
2013 Tesla Model S 60kWh[/url]
AV L2 EVSE + kWh meter
9.4kW Solar Array + enphase energy

jclemens
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Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Tue Dec 20, 2011 6:16 pm

yes, you could do that, but you have to work with dangerously high voltage, it would require expensive electronics, and would probably void your warranty.
We wouldn't have to open or cut anything (except an EVSE that has already been opened) to see if the J1772 port can accept 240VDC.
Interested in a j1772 dummy inlet to hang your EVSE when not charging?
PM me for details. or see http://erroneus.myevblog.com/buy-plastic-parts-here/

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

Re: Extra Battery, How to Integrate with 24kWh Traction Batt

Tue Dec 20, 2011 8:38 pm

jclemens wrote:yes, you could do that, but you have to work with dangerously high voltage, it would require expensive electronics, and would probably void your warranty.
We wouldn't have to open or cut anything (except an EVSE that has already been opened) to see if the J1772 port can accept 240VDC.
Yes, that was my point on that note.

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