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Super-fast EVCPs?

Chris Pearson
I don't think that I have seen this in here before, but these batteries came up in a motoring forum.


The claim to charge an EV all the way in 5 min seems to be entirely spurious - all that they have managed so far is a moped, but even if the batteries existed, how would they be charged?


Here is my back-of-a-fag-packet calculation. An average EV will do 4 - 5 miles per kWh; let's be conservative and say 4. So with a range of 300 miles between charges, that requires 75 kWh. Delivered over 1/12 hour that requires 900 kW. So in round terms, that is one 1 MVA transformer per EVCP. Could be useful on a motorway, but I cannot see the point elsewhere. Even then, very few journeys in UK are over 300 miles. Both Edinburgh and Land's End are closer to Birmingham than that.


900 kW at 48 V DC is almost 20,000 amps. What sort of connexion is envisaged?
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    I agree, a 'calor gas bottle' business model would have a lot to recommend it, the distributors  could take them to the power station to be refilled, or at least to a place with an arterial sized feed. Who knows the load could be used for grid balancing.

    As far as I know, the only folk looking at battery standardisation and removable modules  are electric motorbike makers

    here    and an agreement between Japanese manufacturers  here   


    and  demostrated here


    i cannot help feeling the current solutions are a short-lived stop gap.

    Perhaps cars could be re-jigged to take 6 or 8  standard motorbike rechargeable batteries as a removable pallette  when the original batteries are no longer made.


    Mike
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  • 0
    I agree, a 'calor gas bottle' business model would have a lot to recommend it, the distributors  could take them to the power station to be refilled, or at least to a place with an arterial sized feed. Who knows the load could be used for grid balancing.

    As far as I know, the only folk looking at battery standardisation and removable modules  are electric motorbike makers

    here    and an agreement between Japanese manufacturers  here   


    and  demostrated here


    i cannot help feeling the current solutions are a short-lived stop gap.

    Perhaps cars could be re-jigged to take 6 or 8  standard motorbike rechargeable batteries as a removable pallette  when the original batteries are no longer made.


    Mike
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