KenB2
Posts: 1
Joined: Mon Apr 04, 2016 9:59 am
Delivery Date: 04 Apr 2016

Re: Use of Nissan Leaf battery in Solar installation.

Mon Apr 04, 2016 10:04 am

Does anyone know how to do this with the batteries still in the car. ie using V2G/H thinking?

eiken
Posts: 1
Joined: Wed May 25, 2016 1:39 am
Delivery Date: 14 Mar 1985
Leaf Number: 020016

Re: Use of Nissan Leaf battery in Solar installation.

Wed May 25, 2016 1:42 am

Just love this setup.

Is there another site or a DIY guide with a more in-depth guide to this setup ?
Would like to create one for my self, as the government are not supporting solar energy in Denmark anymore, and i therefore wan't to store my power for the night.

dgray477
Posts: 1
Joined: Fri Jun 03, 2016 8:54 am
Delivery Date: 03 Jun 2017

Re: Use of Nissan Leaf battery in Solar installation.

Fri Jun 03, 2016 8:57 am

Awesome work. I would also love to duplicate this myself and am talking with Orec on getting the same BMS. So could you put together a detailed diagram of your setup for those of us that want to use the same BMS and some of the setup you went through to get it where it was at.

Thanks again,

User avatar
Marktm
Gold Member
Posts: 309
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Use of Nissan Leaf battery in Solar installation.

Sat Jun 04, 2016 11:46 am

offpist wrote:Yes, I leave a little headroom both on top and bottom.
How much can be adjusted on the fly on the BMS.

Also the inverter is programmed for seasonal variations.
It will use more potential of the battery in the summer, compared to the winter.


Wondering if you can give us an update - added any more battery modules, any issues with the Sunny Boy equipment/BMS, etc?
Very interesting set up that beat the V2G initiatives by years - with substantial storage capacity. Quite an accomplishment.
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

offpist
Posts: 33
Joined: Sun Mar 16, 2014 4:26 am
Delivery Date: 23 Apr 1978

Re: Use of Nissan Leaf battery in Solar installation.

Sat Jun 04, 2016 2:03 pm

Hello guys, Thanks for the feedback.
I have sold the battery solution, as we are going sailing for a long time.. (at least one year, maybe more)
But everything is still working, and many have copied this setup. I have provided about 30+, Nissan Leaf batteries, mainly to Germany.

In the sailboat we have 1000AH Lifepo4 battery, 654W solar, water-maker etc. so we are pretty much self independent for energy and drinking water, all thanks to Lithium batteries.

Our dingy is powered also by 48V battery made by Lithium-Ion cells from Peugeot Ion. (equals about 8 HP petrol outboard).

User avatar
Marktm
Gold Member
Posts: 309
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Use of Nissan Leaf battery in Solar installation.

Sun Jun 05, 2016 6:43 am

One word - JEALOUS!.

Thanks for providing great level of detail with all references - very helpful.
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

levtron
Posts: 1
Joined: Mon Sep 12, 2016 2:41 pm
Delivery Date: 12 Sep 2016

Re: Use of Nissan Leaf battery in Solar installation.

Mon Sep 12, 2016 4:08 pm

Question for whom ever:

offpist configured the Nissan battery modules as 10p7s (and since each module is actual 2s...the configuration is actually 10p14s). In his arrangement each BMC line is monitoring groups of 10 modules rather than individual batteries. Is there any problem in doing this....might a battery fail, weaken and not be detected...or perhaps not charge as well as it's neighbors? It certainly would be expensive to monitor each module...each module would need 2 BMS lines. If anyone has a thought I would appreciate hearing from you. Thanx...In Oregon with Nissan Leaf Battery ready to configure.

miimura
Posts: 12
Joined: Mon Jul 21, 2014 3:53 pm
Delivery Date: 01 Jan 2016
Location: Los Altos, CA

Re: Use of Nissan Leaf battery in Solar installation.

Thu Nov 17, 2016 6:33 pm

levtron wrote:Question for whom ever:

offpist configured the Nissan battery modules as 10p7s (and since each module is actual 2s...the configuration is actually 10p14s). In his arrangement each BMC line is monitoring groups of 10 modules rather than individual batteries. Is there any problem in doing this....might a battery fail, weaken and not be detected...or perhaps not charge as well as it's neighbors? It certainly would be expensive to monitor each module...each module would need 2 BMS lines. If anyone has a thought I would appreciate hearing from you. Thanx...In Oregon with Nissan Leaf Battery ready to configure.
When you have multiple cells in parallel they act as one huge cell because all the minus (-) terminals are tied together and all the plus (+) terminals are tied together. If one cell in that group is not pulling its weight, it simply drags down the group. If the BMS indicated that one group in the series string was lower voltage than the rest, you could pull it out of the pack, separate the cells and test each one or charge them in series to find the poorly performing one. This is the reason that the OP put the cells in parallel and then put the parallel groups in series. The other way, that uses 10X more BMS, is to make 10 individual series strings and put those in parallel. That would be a huge expense for not much benefit.

Offgrid
Posts: 1
Joined: Fri Nov 25, 2016 6:12 pm
Delivery Date: 26 Nov 2016

Re: Use of Nissan Leaf battery in Solar installation.

Fri Nov 25, 2016 6:20 pm

Hi everyone new to the forum
As my name suggests I am off grid on some
Rolls surett lead acid
I have 70kwh of Tesla batteries out of a model S that I want to use with a sunny island


Does any one have the can bus files for the sunny island want to use the same BMS setup as you

Great job btw

TJ0705
Posts: 1
Joined: Tue Nov 25, 2014 1:22 pm

Re: Use of Nissan Leaf battery in Solar installation.

Sat Nov 26, 2016 3:47 am

Hi, you can buy that BMS in one version that is already ready to communicate with the sunny island. No need for can bus files.

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