Nissan LEAF Battery Modules Become Mini Energy Storage System

NOV 21 2014 BY MARK KANE 10

Mini Energy Storage System in the Bordeaux 6-bootle wooden crate

Mini Energy Storage System in the Bordeaux 6-bootle wooden crate

Christophe Hubert, who is doing a swell job at the My E-Life Now ! blog on electric vehicles, energy storage system, and who personally owns a Nissan LEAF and BMW C evolution scooter, recently presented his latest project – the 1.5 kWh Mini Energy Storage System.

Hubert gave InsideEVs permission to present his project.

Its called mini because it is much smaller than his previous one (currently in use too) – 5 kWh  combined with solar array.

The main goal for the second ESS is to improve results in the winter when the solar array produces less energy.

Mini ESS’ task will be to store the energy at night for half the price for 8 hours under EDF tariff and release it during the day, supporting the larger ESS and solar.

The Mini version consists of three AESC / Nissan LEAF battery modules brought to France from the US, which nominally should store some 1.5 kWh of energy. There is also a 250W Grid Tie Inverter and a 10A 29.2V – LiFePO4 charger, which after bottom balancing is doing the job just fine.

As it turns out, France is already well prepared for the advent of the ESS era and is producing enclosures for Nissan LEAF battery modules in volume. By buying a wooden crate now, you can get a 6 botle Bordeaux wine promotion inside.  Drink the wine after completing the ESS build.

Parts for the Mini Energy Storage System

Parts for the Mini Energy Storage System

Nissan LEAF Battery Modules Become Mini Energy Storage System

Nissan LEAF Battery Modules Become Mini Energy Storage System

According to Christophe, the new ESS works and together with larger one to try to keep net usage close to 0.

Result

Result

Source: My E-Life Now ! blog

Categories: Nissan

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10 Comments on "Nissan LEAF Battery Modules Become Mini Energy Storage System"

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Mike I

I don’t understand the point of this tiny unit. 1.5kWh doesn’t do much of anything in the context of home energy usage. If you want to charge this up and take it camping, fine, that makes sense. If you want to talk about Leaf battery DIY energy storage projects, this guy has it really done it up right.
http://www.mynissanleaf.com/viewtopic.php?f=9&t=17879

GeorgeS

More good info.
Mark H should be studying this.

Actually did you know that Enphase announced the AC Battery with a capacity of 1.2kWh

Nice AESC / LEAF modules ESS built in Norway, they seem to have a lot of salvaged EVs over there 🙂
I see that he’s using the whole SMA solution, pretty impressive job

GeorgeS

I love this kind of stuff and I would like to see more solar projects on InsideEV’s.

I get the general idea of what Hubert is doing but I wish we had more details.

What are the round things that look like the top of some capacitors?

It looks like he has 6 inverters hooked in parallel. If so, how does he get them “in Phase”

My biggest question is on the battery charge controller that the solar panels feed (on the bigger pack). Where does one get a charge controller that is a reasonable price and has the capability to charge Li batts?

What Voltage are his solar panels?

Where does one get a charge controller that is smart enough to charge the Li batts?

Hmmm maybe if he had a 12V solar array he could use a cheap RC Li battery charger.

Good stuff.

GeorgeS

OK. just went to his blog site.

On the site they have a link to a DIY ESS kit.

pjwood

I wonder if the French offer TOU, with their nuclear grid. If so, the price swing must be rather attractive. Maybe not enough to make 1.5kwh worth it, but these are the seeds of “grid defection”.

GeorgeS

Yes he’s on TOU. Charging the ESS at night.

Yes it’s a small ESS but there’s DIY plans on the site for larger system.

This is just a small ESS buikt quickly to test and see if these cells could be used easily like LiFePO4 ones used in my bigger 2 years old ESS and yes they are exactly the same, more dense and with a different voltage range

My 5kWh ESS has been running fine for the last year and a half with solar and it is rather simple
More info on my blog http://www.diyesskit.com

Update: My Mini #ESS with #LEAF #Batteries gets #Enphase #M215 Micro #Inverter ! => #DIY AC #Battery http://goo.gl/y8nIaR