There are many places these days where you can charge your car for
free. I believe the thinking is you get a few KW's from the charger at
the mall (not that many, they aren't very fast chargers), however the
mall is picking your pocket (I mean selling you their goods) while
you're shopping there. I see a potential abuse though of leaving your
car there all day, charging (free), go home and sell those KW's to the
grid during on-peak TOU. Human nature....nasty stuff. They'll have to
figure out how to make it all fair and efficient.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net
On 2/22/2017 3:28 PM, Glenn Burt wrote:
I think the Pika Energy also works at a high voltage with their
batteries. Technology seems to be quite similar to Store Edge.
------------------------------------------------------------------------
From: Brian Teitelbaum <mailto:bteitelb...@aeesolar.com>
Sent: 2/22/2017 15:00
To: RE-wrenches <mailto:re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Discharging a high voltage battery
Hi Larry,
This is not a new idea. It’s called “Vehicle-to-Grid” or “V2G”, and is
a big subject of discussion in Europe.
If everyone had an electric vehicle in their driveway, it would
represent a huge (yuge?) distributed battery bank over the whole
country. I think that’s a great idea.
As far as I know, the SolarEdge “StorEdge” 7.6 kW inverter is the only
inverter with this capability right now, although many other inverter
companies are working on inverters that can operate with high-voltage
batteries. The StorEdge is designed to work with the Tesla home
battery, which is basically a smaller version of the Model-S battery
pack. The inverter would have to be programmable to work with the
battery’s BMS, and limit the discharge so that the vehicle’s battery
is only drained to some set-point. You wouldn’t want to completely
drain the battery, at least not if you want to use the vehicle.
I doubt that it would make any economic sense at this point in time,
but the future is bright.
Brian
AEE Solar
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
<mailto:re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of
*Starlight Solar Power Systems
*Sent:* Wednesday, February 22, 2017 11:17 AM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Discharging a high voltage battery
Hello Wrenches,
Someone has asked me about discharging their EV battery into the grid.
They have an existing grit tie system. What they want to do is connect
a 5kW grid tie inverter to their 340 volt, 32kWh EV battery bank and
feed the grid to discharge the battery. Why was not discussed but sure
bugs me.
My uneducated guess is the inverter will be immediately damaged. My
thought is how would it limit the input current? Or, is there such an
inverter available that can do the job?
Any input is appreciated.
Larry Crutcher
Starlight Solar Power Systems
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