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

Sun Apr 01, 2018 11:05 pm

If the additional battery cells are comparable to the original cells, and arranged in 96S, I see no reason to think that CHAdeMO will charge just fine with the original CHAdeMO setup.

I do remember a test done by Ingineer years ago where the LEAF would fault out if more than 30kW were added (I suspect it would exceed the regen limit).

arnis
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Leaf Number: 015896
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Re: Extra Battery, How to Integrate with 24kWh Traction Battery?

Mon Apr 02, 2018 1:48 pm

Leaf regen limit is 50kW.
Short range EVs <30kWh -- Medium range: 30-60kWh -- Long range: >60kWh
Charging: Trickle <3kW -- Normal 3-22kW -- Fast 50-100kW -- Supercharging >100kW

jkenny23
Posts: 84
Joined: Sat Aug 19, 2017 12:49 pm
Delivery Date: 19 Sep 2017
Leaf Number: 009318

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

Mon Apr 02, 2018 2:01 pm

arnis wrote:Leaf regen limit is 50kW.


Has anyone attempted to "force" the Leaf to use more regen to behave like B mode in the newer models, or the more aggressive regen of other EVs?

mux
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Joined: Sat Jan 13, 2018 3:52 am
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Leaf Number: 6177

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

Mon Apr 02, 2018 11:34 pm

I've read through all the threads that could pertain to this, and nobody has shown evidence of their work, just conjecture (much like with the extender battery - to my chagrin :P)

I'm going to attempt this at some point after I have successfully hacked into the EV CAN to modify reported GIDs to reflect the charge in my extender+main battery accurately. As far as I know, this can be achieved by spoofing requested torque messages from the VCM.

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IssacZachary
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Leaf Number: 420789
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Re: Extra Battery, How to Integrate with 24kWh Traction Battery?

Tue Apr 03, 2018 8:49 pm

I know this has been measured, estimated and posted on MNL but keep searching and searching, even at google.com with "site:mynissanleaf.com" and I'm still not finding this.

Does anyone know how many 18650's would fit in an emptied Leaf Battery case?
2013 SL SOLD :cry:
2013 Toyota Avalon Hybrid CURRENT

LeftieBiker
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Location: Upstate New York, US

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

Tue Apr 03, 2018 9:01 pm

This topic may yield either that info or at least the dimensions to determine it yourself:

https://endless-sphere.com/forums/viewtopic.php?t=89680
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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

Tue Apr 03, 2018 9:06 pm

LeftieBiker wrote:This topic may yield either that info or at least the dimensions to determine it yourself:

https://endless-sphere.com/forums/viewtopic.php?t=89680

Thanks! That's a big help!
2013 SL SOLD :cry:
2013 Toyota Avalon Hybrid CURRENT

LeftieBiker
Posts: 9402
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

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

Tue Apr 03, 2018 10:01 pm

Remember that it doesn't always help to specify a site when searching Google. There are other sites like the above that can be very helpful.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

mux
Posts: 167
Joined: Sat Jan 13, 2018 3:52 am
Delivery Date: 13 Oct 2011
Leaf Number: 6177

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

Tue Apr 03, 2018 10:53 pm

IssacZachary wrote:I know this has been measured, estimated and posted on MNL but keep searching and searching, even at google.com with "site:mynissanleaf.com" and I'm still not finding this.

Does anyone know how many 18650's would fit in an emptied Leaf Battery case?


On a pure volume of the original cells-basis: The modules are 303x223x35mm, and there are 48 of these, so that's a total volume of 0.114m3 which would fit about 6000 18650s in a staggered pattern. Most likely you'd arrange them 60P, so it'd be 5760 cells for a maximum nominal capacity with modern cells of approx. 72kWh, but more likely around 55 if you include cell spacers, bus bars and all that jazz.

jkenny23
Posts: 84
Joined: Sat Aug 19, 2017 12:49 pm
Delivery Date: 19 Sep 2017
Leaf Number: 009318

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

Wed Apr 04, 2018 4:50 pm

Question for mux - since I'm thinking of getting a head start with wiring tap from the VCM to the trunk, I was going to wire both the 3 contactor controls (PRE-CHARGE RELAY, SYSTEM MAIN RELAY 1, SYSTEM MAIN RELAY 2) as well as the 2 CAN bus lines in case I need to do any CAN bus reads or modification in the future. Will it be an issue having the extra 8' long stub of wire going to the trunk on the CAN bus?

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