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

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!
Jade Frost 2018 SV

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Leaf Number: 5926
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Re: Cooling Leaf batteries with ice?

Thu Jul 12, 2018 2:53 pm

2011 Leaf SL Demo vehicle
10K mi. on 041413; 20K mi. (55.7Ah) on 080714; 30K mi. (52.0Ah) on 123015; 40K mi. (49.8Ah) on 020817; 50K mi. (47.2Ah) on 120717; 60K mi. (43.66Ah) on 091918.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

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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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Delivery Date: 30 Apr 2018
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.

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Leaf Number: 308382
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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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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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