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V to G and repurposing of BEV batteries in secondary non-BEV applications.

Posted: Sat Feb 08, 2014 10:07 am
by edatoakrun
7/19/15 edited thread title to include non-stationary applications

6/30/16 edited thread title to include V to G use, while the packs remain in BEVs.

IMO, Nissan is the only BEV manufacturer that seems to understand that the economic viability of BEVs is, to a considerable extent, dependent on making full use of the battery life cycle, with initial use in BEVs, then in stationary applications after they lose energy density.

Good to see the first commercial repurposing of LEAF batteries, though I wouldn't call 400 kWh (I don't think that figure could be correct, if from only sixteen batteries) "large scale".

Sumitomo installs first large-scale power system using used EV batteries

8 February 2014

Sumitomo Corporation has developed and installed the first large-scale power storage system which utilizes used batteries collected from electric vehicles. This commercial scale storage system, built on Yume-shima Island, Osaka, will begin operating in February 2014.

Sumitomo Corporation created the joint venture company, 4R Energy Corporation, in collaboration with Nissan Motor Co., Ltd. in September 2010, to address the secondary use of EV lithium-ion batteries. (Earlier post.) The used EV batteries that will be recycled into this large-scale storage system have been recovered and have gone through thorough inspection and maintenance at 4R, to confirm safety and performance. This prototype system (600kW/400kWh) consists of sixteen used EV batteries.

Over the next three years, the system will measure the smoothing effect of energy output fluctuation from the nearby “Hikari-no-mori,” solar farm, and will aim to establish a large-scale power storage technology by safely and effectively utilizing the huge quantities of discarded used EV batteries which will become available in the future...


http://www.greencarcongress.com/2014/02 ... itomo.html" onclick="window.open(this.href);return false;

Re: Repurposing of LEAF batteries in stationary applications

Posted: Sat Feb 08, 2014 10:16 am
by thankyouOB
another reason why the SYB program is a loser.
some of us may want to repurpose our batteries for our own solar systems or other uses.
also, it has value, and having it taken without compensation is a bad business.
yes, i recognize that the $100-per-month-forever pricing may, in some fashion, take into account the value of the returned battery. if so, none of this has ever been explained, discussed or treated with transparency.
we are getting pretty far into 2014 now, and it is time for Nissan to return to the marketing/communication field about battery replacement.

helllo? anybody out there?

Re: Repurposing of LEAF batteries in stationary applications

Posted: Sat Feb 08, 2014 10:29 am
by gbarry42
A publicity stunt is better than doing nothing at all. A proof of concept demonstration is even better. This is progress.

At 400kWh/16 packs, they are getting batteries with 25kWh still left in them. If "used up" means 70% left, I wonder which vehicles you can buy there that come with 36kWh packs. In a similar vein, I wonder if any LEAFs in Japan have started losing capacity. Maybe the owners are too polite to mention it.

Re: Repurposing of LEAF batteries in stationary applications

Posted: Sat Feb 08, 2014 10:32 am
by edatoakrun
thankyouOB wrote:...some of us may want to repurpose our batteries for our own solar systems or other uses...


One of the reasons I both own my LEAF and try take reasonable care of my pack, is that I am a candidate for keeping my pack if I ever replace it.

If Nissan (or other pack rebuilders) don't offer a reasonable trade-in credit, I expect that others will probably give me the option of using my pack at home.

Re: Repurposing of LEAF batteries in stationary applications

Posted: Sat Feb 08, 2014 1:30 pm
by ydnas7
edatoakrun wrote:
thankyouOB wrote:...some of us may want to repurpose our batteries for our own solar systems or other uses...


One of the reasons I both own my LEAF and try take reasonable care of my pack, is that I am a candidate for keeping my pack if I ever replace it.

If Nissan (or other pack rebuilders) don't offer a reasonable trade-in credit, I expect that others will probably give me the option of using my pack at home.



I expect Nissan is obliged to account for all batteries that are reused to go through official channels. (Be it them or some other company) So they can comply with 'recycling' requirements.

Some time ago a UK dealers piece was linked on this site, in it, there was even a recycing fee for the batteries that was only waived in case of vehicle theft.

Used LEAF batteries now being used for grid storage

Posted: Sat Feb 08, 2014 2:17 pm
by DaveEV
Storage system powered by used Nissan batteries installed at Japanese solar farm
A large-scale storage system made by reusing electric vehicle batteries has been developed and deployed at a 10MW solar farm in south western Japan by Sumitomo Corporation.
...
The latest project has seen the JV, 4R Energy Corporation develop and install a 600kw/400kWh prototype system made with sixteen used lithium-ion batteries from Nissan’s Leaf model EV.

Now that Nissan has a good way to use the used modules from LEAFs, perhaps they will be ready to offer an upgrade plan with their next generation of batteries for LEAF owners low on capacity?

Re: Repurposing of LEAF batteries in stationary applications

Posted: Sat Feb 08, 2014 5:58 pm
by downeykp
There is no way that the SYB program is ever going to see the light of day. It could work for new sales but there was no way that they were going to get those of us who bought our cars to buy into this scheme.

thankyouOB wrote:another reason why the SYB program is a loser.
some of us may want to repurpose our batteries for our own solar systems or other uses.
also, it has value, and having it taken without compensation is a bad business.
yes, i recognize that the $100-per-month-forever pricing may, in some fashion, take into account the value of the returned battery. if so, none of this has ever been explained, discussed or treated with transparency.
we are getting pretty far into 2014 now, and it is time for Nissan to return to the marketing/communication field about battery replacement.

helllo? anybody out there?

Used Leaf Batteries Used for Large Scale Power Storage

Posted: Thu Feb 13, 2014 8:13 am
by Stoaty
http://insideevs.com/sumitomo-installs- ... batteries/

My only quibble with the article is listing the system as 400 kwh. 16 * 24 kwh (for new batteries) = 384 kwh. I don't think those old batteries are going to total anywhere near 400 kwh.

Re: Used Leaf Batteries Used for Large Scale Power Storage

Posted: Thu Feb 13, 2014 8:33 am
by palmermd
Thats because they calculated on the LA4 cycle.

Re: Used Leaf Batteries Used for Large Scale Power Storage

Posted: Thu Feb 13, 2014 10:47 am
by RegGuheert
Nice find! It's good to see that some used EV batteries finding a second life. It would be nice to see a block diagram and some photographs showing how this is implemented.

Now if we could only find a home for all of them! I would like to see a home power kit which allows one to build a home PV (or grid backup) system by using the modules (or complete batteries) from the used batteries from one or two LEAFs.