Author Topic: StoreDot demos EV battery that reaches a full charge in 5 minutes  (Read 956 times)

rcjordan

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When fully charged, it can apparently keep the car running for 300 miles.

https://www.engadget.com/2017/05/12/storedot-ev-battery-demo/

buckworks

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Re: StoreDot demos EV battery that reaches a full charge in 5 minutes
« Reply #1 on: May 12, 2017, 02:33:09 PM »
This could create big spikes in demand for electricity if lots of people wanted to charge in a short time frame.

How many cars doing this could the existing grid accommodate? What's the choke point?

rcjordan

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Re: StoreDot demos EV battery that reaches a full charge in 5 minutes
« Reply #2 on: May 12, 2017, 02:46:16 PM »
We already have those big daily 'living pattern' spikes but EVs are going to put an estimated 20% additional load on the grid.  

https://books.google.com/books?id=7X0EDgAAQBAJ&pg=PA360&dq=impacts+of+plug-in+charging+on+the+electricity+network&hl=en&sa=X&ved=0ahUKEwiSpoOZy-rTAhXHbiYKHWYPBXgQ6AEIJzAA#v=onepage&q=impacts%20of%20plug-in%20charging%20on%20the%20electricity%20network&f=false

I'm guessing we're going to get peak demand metering like we have on water heaters and hvac units, but that ain't gonna cover on-the-road charging.

<added>
I'm glad to see this one is a demo and not some "promising development" in battery tech. I'm sick of those articles.

ergophobe

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Re: StoreDot demos EV battery that reaches a full charge in 5 minutes
« Reply #3 on: May 12, 2017, 03:00:44 PM »
>>current grid

Well, it's totally inadequate whether you're looking at capacity, flexibility, ability to resist a Carrington event, etc, etc, etc. It needs upgrading.

But to your point, where I work they just put in 8 superchargers and it's a significant infrastructure upgrade. That much juice is an amazing thing and even when idle you can hear the hum of those transformers at a substantial distance. In a rural area like ours, at a certain point the lines will have to be upgraded.

I remember when the ski area I worked at years ago launched their new snowmaking system. They fired up the compressors and literally blew lines right off the poles. They had to switch to phased power up which would brown out the whole valley for several minutes as the compressors came up to speed.

>>spikes

Long term, having lots of EVs could even this out. If your EV is parked, you leave it plugged in and sell electricity back during spikes, then buy at cheaper prices at night. We need to get there. Right now consumers typically pay the same cost anytime of the day, but the costs to the utilities can vary wildly. You can't even say "by 10x" because there are times at night when power plant operators *pay* the utilities to take their power, because it's cheaper than shutting down. Meanwhile, during peak times, a KW can cost literally 1000x what consumers pay.

So we need smart metering that encourages people to even out their load. If meters know the auction price, people with batteries can buy low and sell high and even out use. For example, you could park your car at work and say "sell if the price goes above 20 cents per KW, but make sure I still have 2x what I need to get home"

I just saw an article about some promising developments in this technology ;-)
« Last Edit: May 12, 2017, 03:07:28 PM by ergophobe »

rcjordan

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Re: StoreDot demos EV battery that reaches a full charge in 5 minutes
« Reply #4 on: March 31, 2018, 03:45:25 PM »
>>>current grid
>Well, it's totally inadequate whether you're looking at capacity, flexibility, ability to resist a Carrington event, etc, etc, etc. It needs upgrading.

UPS has found a way to plug in its electric fleet without blowing up Londonís grid

https://qz.com/1241938/ups-has-found-a-way-to-plug-in-its-electric-fleet-without-blowing-up-londons-grid/

Travoli

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Re: StoreDot demos EV battery that reaches a full charge in 5 minutes
« Reply #5 on: March 31, 2018, 04:23:31 PM »
>How many cars doing this could the existing grid accommodate? What's the choke point?

Large capacitors could solve the spike problem. Investment opportunity!

littleman

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Re: StoreDot demos EV battery that reaches a full charge in 5 minutes
« Reply #6 on: April 01, 2018, 01:50:35 AM »
Seems the uptake on roof-top solar is happening at about the same rate as EVs around here.  I'm guessing that it will be close to a wash as far as capacity and demand goes.