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Joined: Wed Oct 11, 2017 11:21 am
Delivery Date: 28 Apr 2018
Leaf Number: 306739

Cooling Leaf batteries with ice?

Thu Jul 12, 2018 2:02 pm

A while back I saw a post in the Seattle Leaf facebook group about cooling the 2018 battery pack by putting ice on the pack through the access panel between the rear seats: Image

Has anyone here tried anything like this, or have any idea whether it will cause problems for the battery? With hot summer temperatures and a road trip last week, I found my battery got up to 127 degrees and the maximum charging speed dropped to 16kW (at 20% battery), so I'm very interested in anything that cools the battery!

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Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Cooling Leaf batteries with ice?

Thu Jul 12, 2018 2:53 pm

2011 Leaf SL Demo vehicle
10K miles: Apr 14, 2013, 20K miles (55.7Ah): Aug 7, 2014, 30K miles (52.0Ah): Dec 30, 2015, 40K miles (49.8Ah): Feb 8, 2017, 50K miles (47.2Ah): Dec 7, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

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Joined: Wed Mar 04, 2015 9:58 pm
Delivery Date: 28 Feb 2015
Location: Fountain Hills Arizona

Re: Cooling Leaf batteries with ice?

Thu Jul 12, 2018 7:14 pm

Like stopping a cruise ship with a mosquito!
*2011 Leaf 1 bought 2/28/15 @ 28,000ish mi 10 bar (8 bars @ 11/25/15 @ 37,453 ) (New lizard @ 39,275 mi @ 1/20/2016) Now 52,166 mi.
*Tesla Model S 61,000 mi
*2011 Leaf 2 bought 4/28/15 @ 24,000ish mi 12 bar (new lizard Dec. 2014 @ 22,273 mi) Now 35,485 mi

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

Re: Cooling Leaf batteries with ice?

Thu Jul 12, 2018 10:07 pm

Likely a gag, and do NOT try it. A cooled garage does work.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Posts: 476
Joined: Mon Sep 26, 2011 10:01 pm
Delivery Date: 11 Aug 2018
Leaf Number: 308382
Location: Portland, OR

Re: Cooling Leaf batteries with ice?

Fri Jul 13, 2018 3:54 pm

Slightly better would be to use dry ice, but that would still pull condensate out of the air. I toyed with the idea of putting some kind of expansion jet spraying into the battery pack, to which a bottle of liquid CO2 could be connected during an infrequent trip. The idea would be to have a kind of one-shot refrigeration system one could activate during QC sessions. I only take a few trips a year that involve multiple QCs, so I wouldn't mind the extra fuss of carrying the bottle. Based on some rough-estimate calculations (admittedly, starting from debatable guesses as to the heat generated by a QC), it didn't look practical. Too bad the CHAdeMO charging connector didn't make provision for a small air line that could convey cooled compressed air into the battery pack; the cable's fatter than a tugboat hawser anyway, so, there's plenty of room. Plus, it would have let the cost burden of pack cooling be borne by the infrequently used external equipment instead of the car.

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Joined: Tue Oct 19, 2010 12:55 am
Delivery Date: 21 Apr 2011
Location: Goleta,CA

Re: Cooling Leaf batteries with ice?

Sun Aug 12, 2018 11:20 am

Dry ice or bottled CO2 in a closed space is a suffocation hazard and should never be done in a habitable closed space.
if you don't believe:

In some places in Europe such as a pubs which use CO2 charging bottle/tanks they require oxygen sensors in spaces like the storage basements.
Glacial Pearl 2011 LEAF SL, QC delivered 4/21/2011, sold 7/22/2018
Chevy Bolt Premiere, 6/4/2018
White 2018 LEAF S, QC, Winter package, 6/14/2018

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