edatoakrun
Posts: 4572
Joined: Thu Nov 11, 2010 9:33 am
Delivery Date: 15 May 2011
Leaf Number: 2184
Location: Shasta County, North California

Re: Post your questions about the '18 LEAF 2 reveal here

Tue Sep 12, 2017 6:49 am

LeftieBiker wrote:...The Leaf's pack does get cooled when the car is moving and the air temp is below the pack temp. That wouldn't happen with a stationary car.

Gen one LEAF pack is sealed, and cooled by conduction, so the increased cooling effect from air movement when driving (never reported, AFAIK) is not likely to be very significant.

All reports so far indicate Gen two packs will do the same.

Obviously, if you are using any pack in V to H or V to G you would want to take both ambient and battery temperatures into account when choosing your charge/discharge cycle, both kW rate and depth of charge/discharge.
no condition is permanent

Valdemar
Posts: 2403
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Post your questions about the '18 LEAF 2 reveal here

Wed Sep 13, 2017 9:52 am

I have a question, will the pack capacity loss warranty based on capacity bars again and if so will they finally advertise what capacity bars mean in terms of capacity %-age? As we are learning the "thickness" of capacity bars tend to scale up with battery size which makes some of us tired of these low games.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB)
59.7AHr, SOH 93%, 118k miles
9kW Solar

User avatar
Nubo
Posts: 4362
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: Post your questions about the '18 LEAF 2 reveal here

Wed Sep 13, 2017 10:41 am

I'm wondering if there have been any drivetrain modifications along with the more powerful motor. I wonder if the increased torque necessitated any beefier components like the gearbox or CV joints.
I noticed you're still working with polymers.

Oils4AsphaultOnly
Gold Member
Posts: 153
Joined: Sat Oct 10, 2015 4:09 pm
Delivery Date: 20 Nov 2016
Leaf Number: 313890
Location: Arcadia, CA

Re: Post your questions about the '18 LEAF 2 reveal here

Wed Sep 13, 2017 10:55 am

Valdemar wrote:I have a question, will the pack capacity loss warranty based on capacity bars again and if so will they finally advertise what capacity bars mean in terms of capacity %-age? As we are learning the "thickness" of capacity bars tend to scale up with battery size which makes some of us tired of these low games.


+1

At least the bolt is warrantied with a straight percentage - 60%. With the new AA style, I'm guessing it's like the RAV4EV's indicator, which should more closely match the percentage capacity. Will need to see it firsthand to confirm.
[2013 leaf traded for 2016 leaf S30:
1 May 2017 - 7300 miles & 363 GIDs
6 Sep 2017 - 13k miles & 359 GIDs]

LeftieBiker
Posts: 6794
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Post your questions about the '18 LEAF 2 reveal here

Wed Sep 13, 2017 8:48 pm

LeftieBiker wrote:
...The Leaf's pack does get cooled when the car is moving and the air temp is below the pack temp. That wouldn't happen with a stationary car.


"Gen one LEAF pack is sealed, and cooled by conduction, so the increased cooling effect from air movement when driving (never reported, AFAIK) is not likely to be very significant."


There have been quite a few observations of pack temp dropping at highway speeds. I think I've got the answer right.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

cwerdna
Gold Member
Posts: 6969
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Post your questions about the '18 LEAF 2 reveal here

Wed Sep 13, 2017 9:40 pm

LeftieBiker wrote:
LeftieBiker wrote:
...The Leaf's pack does get cooled when the car is moving and the air temp is below the pack temp. That wouldn't happen with a stationary car.


"Gen one LEAF pack is sealed, and cooled by conduction, so the increased cooling effect from air movement when driving (never reported, AFAIK) is not likely to be very significant."


There have been quite a few observations of pack temp dropping at highway speeds. I think I've got the answer right.

Agreed. I've seen pack temps drop on Leaf Spy while driving at highway speeds.

I think it will tend to depend on the starting point temp of the pack, outside air temp and demands on the pack.

The other evening, I noted that when I was already on the highway, my avg of my pack temps was 76.6 F and the lowest sensor read 74.1 F. By the time I arrived home, the numbers were 75.7 and 73.0 F. This was within under 20 minutes of driving, mostly highway then 50 to 55 mph expressway followed by a bit of 25 mph driving.

Outside air temp was between 55 and 60 F.

'13 blue Leaf SV w/premium package (owned)
'13 blue Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Return to “LEAF Gen 2 & Infiniti EV”