DougWantsALeaf
Posts: 1287
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Battery Upgrades are very possible

Tue Jan 14, 2020 4:28 pm

Ideally the fan would be with thermometer and actuator to either route air to or from cabin or outside depending on what you need. Cold battery and warm cabin, take cabin air. Battery at 120F, pull in outside air. Battery at 70F and outside at 0F, no fan....etc.

Actually I have wondered if a small airscoop on the bottom of the car to pull air over the battery (with actuator to close in winter) would effectively solve the small remaining hot battery long long trip issue.
2019 SV Plus Silver 6/19 purchase 6,800 M
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

Oilpan4
Gold Member
Posts: 1133
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Battery Upgrades are very possible

Wed Jan 15, 2020 1:05 am

I think we can safely say cooling the battery from the outside isn't going to cut it.
Add a fan on the inside and force that air between the modules and along the case may yield a slight improvement by speeding up heat transfer since dumping ice down the fuse access hole in the floor on top of fuse access cover area of the battery seems to help.
2011 white SL leaf with 2014 batt.
Chargers: Panasonic brick moded for 240v, duosida 16a 240v and a 10kw setec portable CHAdeMO
Location: 88103

DaveinOlyWA
Posts: 14462
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: Battery Upgrades are very possible

Wed Jan 15, 2020 7:34 am

DougWantsALeaf wrote:
Tue Jan 14, 2020 4:28 pm
Ideally the fan would be with thermometer and actuator to either route air to or from cabin or outside depending on what you need. Cold battery and warm cabin, take cabin air. Battery at 120F, pull in outside air. Battery at 70F and outside at 0F, no fan....etc.

Actually I have wondered if a small airscoop on the bottom of the car to pull air over the battery (with actuator to close in winter) would effectively solve the small remaining hot battery long long trip issue.
Yeah that would be the ultimate. Simply a system that has two outlets. One to the atmosphere, the other back into the car. Adjustable Thermostat control. Turn on when batt temps hit 90º... It would be an interesting contest in Summer between A/C and battery (A/C will have ambient solar to fight as well) Not sure Summer will improve a ton.

Winter would be a different story. Keeping pack cool and warming passengers would be great. We have had cold weather and even with defrost on 61º (one degree up from lowest) and fan speed of one, its still rather warm. Since set point is so low compared to cabin temp, the low fan seems to have an effect of just warming the front of car only.

Power output is still high for a time so not sure if its more efficient or not?
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 3500.3 mi, 96.95% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

Dala
Posts: 153
Joined: Sun Oct 28, 2018 11:24 am
Delivery Date: 01 Jan 2015
Leaf Number: 316851

Re: Battery Upgrades are very possible

Sat Jan 25, 2020 2:45 am

Just a cool story to share, I helped a very remote customer perform a battery upgrade. The customer was very technically capable, so 3d-printed CAN conversion plugs were used to maximize his profit.

Image

He even got a Nissan Consult3+ capable shop to do the actual battery swap! Then he did the final touch with installing the CAN-bridge.

MikeD
Posts: 701
Joined: Thu Jun 24, 2010 6:14 am
Delivery Date: 12 May 2011
Leaf Number: 592

Re: Battery Upgrades are very possible

Sat Jan 25, 2020 8:25 am

Dala: What kind of impression do you think your previous post is likely to make on the average Leaf owner who is thinking about some kind of battery pack upgrade -- positive or negative?

nlspace
Posts: 147
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Battery Upgrades are very possible

Sat Jan 25, 2020 9:24 am

@Mike, you should start a new thread with your data and experience to make it easy for the average owner interested in purchasing a new battery to find.

This thread of 29 pages and ~300 useless posts won't be read by many folks--it is old and stale like most of this site, but with your good data embedded here and will soon be nearly impossible to find.

btw i thought your question to Dala kinda strange, so what is your opinion of his post--positive or negative?

MikeD
Posts: 701
Joined: Thu Jun 24, 2010 6:14 am
Delivery Date: 12 May 2011
Leaf Number: 592

Re: Battery Upgrades are very possible

Sat Jan 25, 2020 11:09 am

nlspace: I'm suggesting that he needs to work on providing a lot more detail (atogether with pros and cons analysis) if he wants people like myself to even begin considering this particular bridge approach to upgrading.

mux
Posts: 257
Joined: Sat Jan 13, 2018 3:52 am
Delivery Date: 13 Oct 2011
Leaf Number: 6177

Re: Battery Upgrades are very possible

Sat Jan 25, 2020 11:42 am

But.... why? If you want to upgrade your main battery, live in Finland near Vaasa or are willing to travel there and if you can afford the price, you get a battery swap. Thing just works, you get warranty, if anything goes wrong, Dala fixes it.

If you live in or near the Netherlands and want the same and/or an extender battery and/or three phase charging, you come to me and it gets done. Something goes wrong, we fix it.

You need no technical knowledge as a customer to enjoy the product. You never need to do anything that requires technical knowledge of the inner workings of this stuff. You'd only need that if you're trying to figure something out yourself or are working on setting up shop to do this yourself.

MikeD
Posts: 701
Joined: Thu Jun 24, 2010 6:14 am
Delivery Date: 12 May 2011
Leaf Number: 592

Re: Battery Upgrades are very possible

Sat Jan 25, 2020 1:40 pm

mux: My main objection was the external placement of the bridge device as opposed to internally under the dash, if I'm understanding the image correctly, so firstly there is much more concern about adequate protection from weather. Also secondly the "average Leaf owner" (i.e. not living near the Netherlands or Finland) who may want to use one of your bridge devices probably has to be able to make updates to it in addition to installing it, so that process needs to be fairly easy for them, don't you agree? So I was puzzled as to what advantages this external bridge had and was trying to prompt for more information -- sorry I was admittedly way too unclear!

I have been watching your videos with interest which obviously provide a good bit of detail which I appreciate, so keep it up!

Dala
Posts: 153
Joined: Sun Oct 28, 2018 11:24 am
Delivery Date: 01 Jan 2015
Leaf Number: 316851

Re: Battery Upgrades are very possible

Sat Jan 25, 2020 2:12 pm

MikeD wrote:
Sat Jan 25, 2020 1:40 pm
mux: My main objection was the external placement of the bridge device as opposed to internally under the dash, if I'm understanding the image correctly
No you aren't, in the picture you see a splice in the cable, with the loom going into the car. The bridge is actually mounted inside the cabin. I would never suggest mounting this hardware outside the cabin.

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