DougWantsALeaf
Posts: 985
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Route AC over battery

Mon Jul 15, 2019 11:39 am

All,

I know battery temperature regulation is a big concern for those of us from all model years.

For winter use, with the ducted heat to the rear, I am eager to see in Jan/Feb if running the heat while charging can help bring up battery temps.

But as we are in July (for those in the northern hemisphere), I wonder if there is any easy way to route the AC through those same ducts, or via other ways (like into the rear hump) which would not be too obtrusive. I am guessing we see that happening on the 2020 Leaf given the precedent with the eNV 200, but not helpful for those of use with existing cars.

I have tried running the cooling cycle a few times while plugged in to see if does anything for the battery temp, but until i get Leaf Spy back up and running, the dash gauge isn't enough to if it even can take even a couple degrees off the battery.

All of that said, at least in Chicago, on 90+ F days here , my battery has been pretty consistently at midpoint on the temp gauge. Even when sitting in the sun. As we are close to peak summer here, the lack of thermal mgmt here hasn't been a concern yet.

We have a 2 day 850 mile trip in a couple weeks, so guess that will be the better test.
2019 SV Plus Silver
2013 Leaf SV
100 Mile Club Member (Number 87)
Max distance on 13 Leaf: 120 miles
Max distance on 19 Leaf: 242 Highway 4.5 miles/kWh (4.9 KWh remaining)

LeftieBiker
Moderator
Posts: 13204
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Route AC over battery

Mon Jul 15, 2019 1:22 pm

Assuming that the 2018+ Leaf still has the Emergency Disconnect on that hump in the rear passenger floor, then the accepted method is to route cold air from an A/C duct into that. However, the 40kwh Leaf virtually fills the under floor space with battery modules; it is my understanding that there is no longer an air space there to use for forced air cooling. Perhaps someone would like to check...?
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

DougWantsALeaf
Posts: 985
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Route AC over battery

Mon Jul 15, 2019 2:29 pm

Do I invalidate any warranty by popping open that hump?
2019 SV Plus Silver
2013 Leaf SV
100 Mile Club Member (Number 87)
Max distance on 13 Leaf: 120 miles
Max distance on 19 Leaf: 242 Highway 4.5 miles/kWh (4.9 KWh remaining)

LeftieBiker
Moderator
Posts: 13204
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Route AC over battery

Mon Jul 15, 2019 4:29 pm

DougWantsALeaf wrote:Do I invalidate any warranty by popping open that hump?
This isn't authoritative, but I don't think so - as long as you don't actually pull the disconnect, anyway...
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Oilpan4
Gold Member
Posts: 847
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Route AC over battery

Mon Jul 15, 2019 7:08 pm

Probably next week when it's supposed to get into the 100s during the day and not drop below mid 80s at night.
I may see 7 and 8 battery bar temperatures during the day.
I will open the battery door and run a ducted portable A/C into the window.
Last edited by Oilpan4 on Mon Jul 15, 2019 8:27 pm, edited 1 time in total.
2011 white SL leaf with 2014 batt.
Chargers: Panasonic brick moded for 240v, duosida 16a 240v and a 10kw setec portable CHAdeMO
Location: 88103

LeftieBiker
Moderator
Posts: 13204
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Route AC over battery

Mon Jul 15, 2019 7:10 pm

Oilpan4 wrote:Probably next week when it's supposed to get into the 100s during the day and not drop below mid 80s at night.
I may see 7 and 8 battery temperatures during the day.
I will open the battery door and run a ducted portable A/C into the window.
Cool! (So to speak.) Thanks.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

DougWantsALeaf
Posts: 985
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Route AC over battery

Tue Jul 16, 2019 5:13 am

Before I give that lid a hard yank, any clips I need to worry about breaking?
2019 SV Plus Silver
2013 Leaf SV
100 Mile Club Member (Number 87)
Max distance on 13 Leaf: 120 miles
Max distance on 19 Leaf: 242 Highway 4.5 miles/kWh (4.9 KWh remaining)

LeftieBiker
Moderator
Posts: 13204
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Route AC over battery

Tue Jul 16, 2019 12:14 pm

Sorry, I don't know.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Calaveras
Posts: 52
Joined: Tue Jun 01, 2010 5:41 pm
Delivery Date: 26 Jun 2015
Location: Gold country California

Re: Route AC over battery

Tue Jul 16, 2019 3:20 pm

It seems that you are trying to make duplicate what the Kia did with th it’s battery packs. They have still replaced a few batteries from 2015-16 under warranty for degradation. It seems better than the Leaf, but not as good as liquid cooled.
2016 Leaf S bought used in 2017
2017 Soul EV bought in 2019 for spouse.
Daily commute is 55 miles round trip with a 1,900 foot elevation climb on the way home. Gold Country California

LeftieBiker
Moderator
Posts: 13204
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Route AC over battery

Tue Jul 16, 2019 3:28 pm

Calaveras wrote:It seems that you are trying to make duplicate what the Kia did with th it’s battery packs. They have still replaced a few batteries from 2015-16 under warranty for degradation. It seems better than the Leaf, but not as good as liquid cooled.

That's pretty much it. I wouldn't expect this improvised air cooling to be nearly as effective as the Hyundai/Kia design.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Return to “Enhancement / Change Requests”