DaveinOlyWA
Gold Member
Posts: 11666
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 2016 30 kWh Battery data

Wed May 24, 2017 5:46 am

A quick note; its finally warming up here! temps into the 80's. Will only be for a few days but we have had temps in upper 70's for several days before that. I have hit 9 TBs a few times but again only on the 2nd QC if and generally only when it was a 50 KW station. Twice I hit EVGO at 40 KW once during the day and both times it only went to 6 TBs which is where it would be half the time during the weather we have been seeing anyway. Good signs.
2011 SL; 44,598 miles. 2013 S; 44,840 miles. 2016 S30; 13001 miles. 363 GIDs, Ahr 82.34, Hx; 102ish% kwh 28.1 QCs 112
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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Stanton
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Posts: 1891
Joined: Thu Feb 03, 2011 10:56 am
Delivery Date: 01 Sep 2011
Leaf Number: 7458
Location: Plano, TX
Contact: Website Twitter

Re: 2016 30 kWh Battery data

Wed May 24, 2017 6:47 am

DaveinOlyWA wrote:A quick note; its finally warming up here! temps into the 80's. Will only be for a few days but we have had temps in upper 70's for several days before that.


You guys up North have no idea what "warm" is: it's been in the 80's here since March! I won't see anything below 6TB again until November. That's why battery degradation isn't such a hot topic (no pun intended) up there.
2011 Blue Ocean SV w/floor mats & window tint
12v LiFePO4 battery & FIAMM 74100 horns
Wet Okole seat covers (front)
Tor's low-power heater mod
2013 sun visor
3G modem upgrade
L2 EVSE Upgrade
Battery Pack replaced (Rev E) @51 months and 41k miles

Oils4AsphaultOnly
Posts: 90
Joined: Sat Oct 10, 2015 4:09 pm
Delivery Date: 20 Nov 2016
Leaf Number: 313890
Location: Arcadia, CA

Re: 2016 30 kWh Battery data

Wed May 24, 2017 6:53 am

Stanton wrote:
DaveinOlyWA wrote:A quick note; its finally warming up here! temps into the 80's. Will only be for a few days but we have had temps in upper 70's for several days before that.


You guys up North have no idea what "warm" is: it's been in the 80's here since March! I won't see anything below 6TB again until November. That's why battery degradation isn't such a hot topic (no pun intended) up there.


Wow, I'm so glad I don't QC! I haven't seen anything above 6TB's despite temps reaching 90. :p
[2013 leaf traded for 2016 leaf S30 (7300 miles & 363 GIDs @ 1 May 2017)! ... still getting a model3 though. :D

GetOffYourGas
Posts: 1441
Joined: Tue Dec 20, 2011 6:56 pm
Delivery Date: 09 Mar 2012
Location: Syracuse, NY

Re: 2016 30 kWh Battery data

Wed May 24, 2017 1:26 pm

Stanton wrote:
DaveinOlyWA wrote:A quick note; its finally warming up here! temps into the 80's. Will only be for a few days but we have had temps in upper 70's for several days before that.


You guys up North have no idea what "warm" is: it's been in the 80's here since March! I won't see anything below 6TB again until November. That's why battery degradation isn't such a hot topic (no pun intended) up there.


I've seen Texas heat. I spent a week in June in Plano, TX for some training. The temperatures were above 100F the whole time - even over night. You can keep it! No wonder batteries melt down there without a proper TMS. I would too! (my TMS is more commonly known as A/C - full blast, all the time! Ironically A/C was invented in Syracuse. I think it was done so Mr. Carrier could move away from the snow...)
~Brian

EV Fleet:
2011 Torqeedo Travel 1003 electric outboard on a 22' sailboat
2012 Leaf SV
2015 C-Max Energi (302A package)

DaveinOlyWA
Gold Member
Posts: 11666
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 2016 30 kWh Battery data

Thu May 25, 2017 5:01 am

Stanton wrote:
DaveinOlyWA wrote:A quick note; its finally warming up here! temps into the 80's. Will only be for a few days but we have had temps in upper 70's for several days before that.


You guys up North have no idea what "warm" is: it's been in the 80's here since March! I won't see anything below 6TB again until November. That's why battery degradation isn't such a hot topic (no pun intended) up there.


Is there a difference between ambient temps in 90's and a car whose pack spends time at 105+º nearly every day?

This is something I hope to answer.
2011 SL; 44,598 miles. 2013 S; 44,840 miles. 2016 S30; 13001 miles. 363 GIDs, Ahr 82.34, Hx; 102ish% kwh 28.1 QCs 112
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

User avatar
Stanton
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Posts: 1891
Joined: Thu Feb 03, 2011 10:56 am
Delivery Date: 01 Sep 2011
Leaf Number: 7458
Location: Plano, TX
Contact: Website Twitter

Re: 2016 30 kWh Battery data

Thu May 25, 2017 6:28 am

DaveinOlyWA wrote:
Stanton wrote:
DaveinOlyWA wrote:A quick note; its finally warming up here! temps into the 80's. Will only be for a few days but we have had temps in upper 70's for several days before that.


You guys up North have no idea what "warm" is: it's been in the 80's here since March! I won't see anything below 6TB again until November. That's why battery degradation isn't such a hot topic (no pun intended) up there.


Is there a difference between ambient temps in 90's and a car whose pack spends time at 105+º nearly every day?

This is something I hope to answer.


I'm sure you realize this, but all that really matters is the pack temps.
I can tell you that while we spend several months here with ambient temps in the 90's, I rarely see a pack temp >105 degrees.
However, the fact that my pack is never <90 degrees either is really the problem...and we all know that pack temps around 100 degrees does plenty of damage.
2011 Blue Ocean SV w/floor mats & window tint
12v LiFePO4 battery & FIAMM 74100 horns
Wet Okole seat covers (front)
Tor's low-power heater mod
2013 sun visor
3G modem upgrade
L2 EVSE Upgrade
Battery Pack replaced (Rev E) @51 months and 41k miles

soldcake
Posts: 41
Joined: Mon Jun 20, 2016 3:47 am
Delivery Date: 19 Jun 2016
Leaf Number: 311414

Re: 2016 30 kWh Battery data

Thu May 25, 2017 9:14 am

And we cannot channel some cabin air to the battery pack. My prius-ii has two vents next to rear seats to the battery (at least owners manual said so.) How come not so for leaf ? any idea?

(I think we cannot feed air thru the maintaince cutoff switch well. Very likely it is sealed around to prevent water invasion to the HV . . . . . Anyone know if that is the case or not?)
May-2017 6866mi 72.98Ahr 91%SOH 87.43%Hx
Feb-2017 4442mi 73.9Ahr 93%SOH 88.6%Hx
Sep-2016 1050mi 74.3Ahr 93%SOH 89%Hx
2016 Leaf White SV + no premium package + rain visor + 40psi :roll:

gshepherd
Forum Supporter
Posts: 156
Joined: Wed Apr 27, 2016 12:01 am
Delivery Date: 03 Jun 2016
Location: Seattle / Phoenix

Re: 2016 30 kWh Battery data

Thu May 25, 2017 3:56 pm

soldcake wrote:And we cannot channel some cabin air to the battery pack. My prius-ii has two vents next to rear seats to the battery (at least owners manual said so.) How come not so for leaf ? any idea?

(I think we cannot feed air thru the maintaince cutoff switch well. Very likely it is sealed around to prevent water invasion to the HV . . . . . Anyone know if that is the case or not?)


Perhaps keeping outside air ingress to a minimum also reduces corrosion. When I was looking at a Tesla powered MB B Class, changing the desiccant packs in the battery pack was a regular service item. Kind of interesting.
2016 LEAF SV

johnlocke
Posts: 96
Joined: Fri Jan 08, 2016 3:47 pm
Delivery Date: 14 Dec 2015
Leaf Number: 300582

Re: 2016 30 kWh Battery data

Thu May 25, 2017 6:51 pm

If you look at the construction of a Tesla battery pack, you will see that the batteries sit on large flat heatpipes. The outside of the heatpipe is what is cooled. The batteries are sealed in. All the airflow is around the outside of the heatpipe which draws the heat from the batteries. It also helps to equalize the heat distribution inside the battery pack.
Jamul, CA
San Diego East County

DaveinOlyWA
Gold Member
Posts: 11666
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 2016 30 kWh Battery data

Fri May 26, 2017 5:11 am

Stanton wrote:
DaveinOlyWA wrote:
Stanton wrote:
You guys up North have no idea what "warm" is: it's been in the 80's here since March! I won't see anything below 6TB again until November. That's why battery degradation isn't such a hot topic (no pun intended) up there.


Is there a difference between ambient temps in 90's and a car whose pack spends time at 105+º nearly every day?

This is something I hope to answer.


I'm sure you realize this, but all that really matters is the pack temps.
I can tell you that while we spend several months here with ambient temps in the 90's, I rarely see a pack temp >105 degrees.
However, the fact that my pack is never <90 degrees either is really the problem...and we all know that pack temps around 100 degrees does plenty of damage.



Yeah, beginning to look like Nissan made progress but maybe not in every way. My pack definitely cools off faster than my 24 kwh pack did but it heats up MUCH higher as well because it fast charges a lot quicker. Even when setting my cut off point to 40 KW, I am still leaving with 85-88% SOC. This means on my 2nd QC of the day, I am over 110º and lately that has been nearly every day. But I get the chance to cool off.

This early in the year when its warm during the day, it gets pretty cold at night. In the garage, temps are moderated quite a bit but car is still sitting in temps in the mid to low 60's. If I was really concerned, I could park it outside at night where its closer to the mid 40's.

But for you, your pack would take forever to cool off and it simply won't cool down enough. Someone mentioned that the packs have air ventilation coming from the front of the car. Wondering if determining its inlet and putting a fan on it would make a difference?

I have noticed that the 3 temp sensors are pretty spread out than they used to be. Before I had 3 with 2 fairly close to each other with the 3rd being a few degrees cooler. Yesterday, after my 2nd QC, I left LS running to see how fast the pack would cool.

This is where it got strange. In just under 2 hours of near constant driving, I lost two TBs but the top sensor only dropped 3º. BUT the middle sensor (which is normally close to the top sensor) lost 10º and the bottom sensor (which is generally 5-12 º cooler any way) was another 8º below that.
2011 SL; 44,598 miles. 2013 S; 44,840 miles. 2016 S30; 13001 miles. 363 GIDs, Ahr 82.34, Hx; 102ish% kwh 28.1 QCs 112
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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