DougWantsALeaf
Posts: 2084
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

Wed Jun 17, 2020 1:22 pm

How does the ENV-200 route the AC into the battery? Is just over the cover, or does it actually pump it "through" the battery package?
2019 S Plus (98.06% SOH) & 2019 SV Plus (94.77% SOH) Both Silver
2013 Leaf SV sold 2019 with 11 bars
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV+: 242 Highway miles @ 4.5 miles/kWh

goldbrick
Posts: 957
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Route AC over battery

Wed Jun 17, 2020 3:20 pm

Per InsideEv's it's neither. There is a HVAC refrigerant line that enters/exits the battery pack enclosure and it's supposedly mainly used to cool the electronics inside.

"The fan, as well as a tiny radiator, which is plumbed into the vehicle's HVAC system, reside in the front-most section of the battery pack. It does not direct air at the cells/pouches, but rather towards the various electronics/controllers within the pack."

https://insideevs.com/news/322347/heres ... tery-pack/

goldbrick
Posts: 957
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Route AC over battery

Wed Jun 17, 2020 3:28 pm

On second thought.....it the HVAC unit inside the pack is truly a radiator rather than an evaporator/condenser then maybe it's simpler than I thought. I don't know what they would circulate through it though since there really isn't any liquid available to the HVAC system beside the refrigerant as far as I know and even for Nissan, routing air through the radiator seems like a dumb idea. Finally, even the fan isn't directed at the battery cells, it is a fairly small enclosed space and I would think any active thermal control would help moderate the cell temperatures as well as any associated electronics.

DougWantsALeaf
Posts: 2084
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

Wed Jun 17, 2020 5:04 pm

I wonder if mux knows given his work on the Leaf batteries?
2019 S Plus (98.06% SOH) & 2019 SV Plus (94.77% SOH) Both Silver
2013 Leaf SV sold 2019 with 11 bars
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV+: 242 Highway miles @ 4.5 miles/kWh

LeftieBiker
Moderator
Posts: 15492
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Route AC over battery

Wed Jun 17, 2020 8:19 pm

From what I understand, the cooling system in question may have done what it was designed to do - cool the battery's internal electronics - but it failed at protecting the battery from heat-related degradation. Hyundai supposedly used cold air blown into the pack, and that didn't work especially well either at keeping the cells cool.
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
Posts: 1729
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Route AC over battery

Mon Jul 06, 2020 9:26 pm

Sounds like some one just needs to cut some holes in a leaf battery, run some A/C to it and find out.

cwerdna
Posts: 11140
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Route AC over battery

Mon Jul 06, 2020 9:44 pm

Oilpan4 wrote:
Mon Jul 06, 2020 9:26 pm
Sounds like some one just needs to cut some holes in a leaf battery, run some A/C to it and find out.
Probably not a good idea. Leaf packs are sealed, for a reason.

'19 Bolt Premier
'13 Leaf SV w/premium (owned)
'13 Leaf SV w/QC + LED & premium (lease over)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

gncndad
Posts: 284
Joined: Mon Feb 22, 2016 9:02 pm
Delivery Date: 23 Feb 2016
Location: Ft. Worth, TX

Re: Route AC over battery

Tue Jul 07, 2020 7:45 am

Oilpan4 wrote:
Mon Jul 06, 2020 9:26 pm
Sounds like some one just needs to cut some holes in a leaf battery, run some A/C to it and find out.
GREAT IDEA! Get 'er done and report back! :D :D :D
2015 LeafS
2018 Toyota Prius Four Touring
2018 Toyota Prius Two
2014 Toyota Avalon Hybrid Limited

DougWantsALeaf
Posts: 2084
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 07, 2020 7:54 am

Just watch out for puddles.
2019 S Plus (98.06% SOH) & 2019 SV Plus (94.77% SOH) Both Silver
2013 Leaf SV sold 2019 with 11 bars
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV+: 242 Highway miles @ 4.5 miles/kWh

User avatar
jlv
Moderator
Posts: 1442
Joined: Thu Apr 24, 2014 6:08 pm
Delivery Date: 30 Apr 2014
Leaf Number: 424487
Location: Massachusetts

Re: Route AC over battery

Tue Jul 07, 2020 8:19 am

Sounds like some one just needs to cut some holes in a leaf battery, run some A/C to it and find out.
Too bad all those really smart engineers at Nissan didn't see this obvious solution.
LEAF '13 SL+Prem (mfg 12/13, leased 4/14, bought 5/17, sold 11/18, 34K mi, AHr 58, SOH 87%)
Tesla S 75D (3/17, 45K mi)
Tesla X 100D (12/18, 23K mi)
ICE free since '18
100K+ 100% BEV miles since '14

Return to “Enhancement / Change Requests”