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Slideshow: Vehicle-to-Grid Technology Gains Momentum

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Daniyal_Ali
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Platinum
Re: nice in theory
Daniyal_Ali   2/11/2014 7:47:46 AM
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You spoke my words naperlou.

"What happens if the building is drawing from the cars and someone needs to go somewhere.  The car battery will be depleted, and the driver will have to wait until it can be charged again."

Another question springs into my mind, what happens to the battery life? It depends on the value being extracted from the battery by the grid. The controllers designed to use in the EVs are intelligent, so that battery life can be utilized to its maximum potential. Will the grid also work intelligently or will it extract all the power it can and leave the driver stranded with a damaged battery.

I guess a better alternative is utilizing this money and making a static energy setup instead of a moving car.

far911
User Rank
Silver
Re: nice in theory
far911   2/11/2014 12:00:42 AM
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Naperlou , i agree with you , as it seema more of a theory.

far911
User Rank
Silver
Re: nice in theory
far911   2/10/2014 11:58:33 PM
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An electric vehicle battery (EVB) or traction battery can be either a primary (e.g. metal-air) battery or a secondary rechargeable battery used for propulsion of battery electric vehicles (BEVs).

Electric vehicle batteries differ from starting, lighting, and ignition (SLI) batteries because they are designed to give power over sustained periods of time

The predicted market for automobile traction batteries is over $37 billion in 2020.

Considering the condition if the story stated works well as narrated the electricity shortage will be minimized every where.

naperlou
User Rank
Blogger
nice in theory
naperlou   2/10/2014 11:29:12 AM
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Cap'n, this is nice in theory, but not really practical.  The issue with plug in electrics today is range.  One good aspect is that they can be charged off-peak.  I guess that, in an emergency, the car battery could be used to supplement the grid.  On the other hand, that electricity will not be available for transportation, the vehicle's primary purpose.  If you have a car like the Volt, that might not be a problem, because there is a ICE to charge it.  On the other hand, the Volt's battery is not that large.  The vehicles with the large batteries, pure EVs, which would be most useful in this scenario, are the ones for which this is the biggest problem. 

It is much cheaper to site batteries or fuel cells in houses, or at substations.  My understanding is that many new homes in Japan are powered by fuel cells.  This is much more reliable.  Take slide 7.  What happens if the building is drawing from the cars and someone needs to go somewhere.  The car battery will be depleted, and the driver will have to wait until it can be charged again. 

It is true that EVs can be useful in terms of renewables.  The whole idea of being able to store energy from renewables is advanced if that energy can be used to charge vehicles. There should be a cost advantage for doing so. 

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