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TonyWilliams
Posts: 10084
Joined: Sat Feb 19, 2011 1:48 am
Location: San Diego
Contact: Website

Re: 2016 30 kWh Battery data

Sat Nov 14, 2015 8:20 pm

TimLee wrote:
QueenBee wrote:...
But that doesn't really make sense does it? The top and bottom of the pack is all based on cell voltage. So they could have changed the cut off voltages?

On the 2011 pack the top may be voltage limited, but the bottom turtle and pack disconnect are based on kWh remaining.
0.4 kWh reported by LEAF Spy Pro at Turtle.
0.3 kWh reported at Pack Disconnect.


That is not correct. The sun may have set at the same time, but the sun wasn't the disconnect. It was the lowest cell pair voltage threshold.

TimLee
Posts: 2811
Joined: Thu Jan 20, 2011 9:40 am
Delivery Date: 17 May 2011
Leaf Number: 2026
Location: Chattanooga, TN

Re: 2016 30 kWh Battery data

Sat Nov 14, 2015 8:34 pm

TonyWilliams wrote:That is not correct. The sun may have set at the same time, but the sun wasn't the disconnect. It was the lowest cell pair voltage threshold.

I agree it is a correlation, not necessarily causation.

But the lowest cell pair voltages observed have varied greatly depending on the capacity degradation of the pack. They do not correlate with a single lowest cell pair voltage.

So if it is the cause, must be a more involved threshold algorithm than just lowest cell pair voltage.

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

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TonyWilliams
Posts: 10084
Joined: Sat Feb 19, 2011 1:48 am
Location: San Diego
Contact: Website

Re: 2016 30 kWh Battery data

Sat Nov 14, 2015 9:00 pm

TimLee wrote:So if it is the cause, must be a more involved threshold algorithm than just lowest cell pair voltage.


There may be other factors, of course, like temperature and degradation (impedance), but the absolute only way to prevent a bricked battery is never let any cell below a threshold.

DaveinOlyWA
Posts: 13281
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 2016 30 kWh Battery data

Mon Nov 23, 2015 11:00 am

TimLee wrote:
TonyWilliams wrote:That is not correct. The sun may have set at the same time, but the sun wasn't the disconnect. It was the lowest cell pair voltage threshold.

I agree it is a correlation, not necessarily causation.

But the lowest cell pair voltages observed have varied greatly depending on the capacity degradation of the pack. They do not correlate with a single lowest cell pair voltage.

So if it is the cause, must be a more involved threshold algorithm than just lowest cell pair voltage.


its the voltage that causes permanent damage to a cell which is why Nissan (correctly I might add) uses it for the cut off.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

TimLee
Posts: 2811
Joined: Thu Jan 20, 2011 9:40 am
Delivery Date: 17 May 2011
Leaf Number: 2026
Location: Chattanooga, TN

Re: 2016 30 kWh Battery data

Mon Nov 23, 2015 9:56 pm

DaveinOlyWA wrote:... its the voltage that causes permanent damage to a cell which is why Nissan (correctly I might add) uses it for the cut off.

But as Tony agreed,
TonyWilliams wrote:There may be other factors, of course, like temperature and degradation (impedance), ...

The damage to the pack and the threshold may be primarily a function of voltage.
But the observations on LEAF so far say there is more to the threshold than voltage alone.
Will be interesting to see measurement of pack disconnect threshold the 30 kWh pack uses.
And changes in that threshold with pack aging.

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

JTim
Posts: 26
Joined: Tue Dec 15, 2015 6:56 am
Delivery Date: 16 Dec 2015
Leaf Number: 1024

Re: 2016 30 kWh Battery data

Thu Jan 28, 2016 8:08 am

Leaf SV 30 kWh purchased 12/10/15, Delivered 12/16/15
Leaf spy results 1/28/16 (took forever to find an ELM that worked)

Ar=74.5
SOH=93%
Hx=89.12
Odo=13 (at delivery), 547 (current), first trip of 103 miles (with two charge bars remaining, used over a week) 1/20/16
3 QC (the dealer must have done the first two), 13 L1/L2 (one charging event for 5 minutes to test new 240 outlet, all others prior to 1/28/16 were overnight L1).

Couldn't get a picture of the battery balancing bars on screen 1 for some reason, but I they look really out of whack (to me) so cells may be unbalanced.
JTim
Fort Worth, TX
Man. Date: 12/15
Delivered 12-16-2015
Glacier White, 2016 SV, 30 kwh

mihird
Posts: 167
Joined: Thu Dec 12, 2013 9:48 pm
Delivery Date: 08 Mar 2013
Location: East Bay CA

Re: 2016 30 kWh Battery data

Thu Jan 28, 2016 3:00 pm

I got a 2016 Leaf SV with the 30Kwh battery about a month ago.

Triple digit range feels awesome!

Image
1st Leaf : 2013 SV (2013-2016) acquired - Feb 2013 (Slate Grey)
2nd Leaf : 2016 SV (2016-?) acquired - Jan 2016 (Electric Blue)
3rd Leaf : 2015 SV (2016-2018) - acquired - Jun 2016 (Black)
4th Leaf : 2018 SV (2018-?) acquired - Jun 2018 (Scarlet Ember)

Turbo3
Gold Member
Posts: 1985
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: 2016 30 kWh Battery data

Tue Feb 02, 2016 1:16 pm

30 kWh pack using LeafSpy Pro 0.37.79.
Image

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DNAinaGoodWay
Posts: 2765
Joined: Mon Dec 17, 2012 1:43 am
Delivery Date: 03 Dec 2012
Leaf Number: 23156
Location: Central Massachusetts

Re: 2016 30 kWh Battery data

Wed Feb 03, 2016 2:43 am

Huh, only 88 to LBW at 3.9? Is the LBW range expanded?
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr

'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new
@ 36 months, 34k, 270 GID, 57.49 Ahr

'17 Bolt LT



6.72 kW Array

DaveinOlyWA
Posts: 13281
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 2016 30 kWh Battery data

Wed Feb 03, 2016 4:44 am

DNAinaGoodWay wrote:Huh, only 88 to LBW at 3.9? Is the LBW range expanded?


sounds normal to me. From LBW to nada, i am getting between 15ish miles in my 2013
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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