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Super-fast EVCPs?

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?
Parents
  • Broadage,

    Ok a 20MVA  substation and the charging units themselves, cost to procure and install 20MVA substation, LV Panels and the charging cabinets and charging units, all the civil and electrical installation work and ongoing maintenance involved presuming that the local DNO/IDNO has a spare 20MVA just lying about.


    Ever wondered what the "Purchase" price would have to be per unit of electricity for the EV driver/customer that the buisness entity would then make a suitable commercial return for their investment that built and installed and runs the EV charging hub.


    Advancing technology and engineering is all very well and great and of course I support that, but it comes at a cost and the vast masses of people dont want to pay for that development nor indeed new technolgy when it first arrives, sometimes as engineers we can do things that are great, but if nobody wants the product or technology or its too expensive from what they already pay what was the point.

    Look back to introduction of the video recorder and Sony Betamax, VHS and even Philips 2000, everybody new which one offerred the better audio/video experience but where did things settle out for the masses globally?


    HM Treasury are already forecasting loss of revenue of fuel duty and they will want that money to come from the motorist in another form. That could be a tax on electricity used to charge EV's or as many suspect will be a charge per mile scheme based on usage and using national network of ANPR cameras. EV users think at this time running costs are low, but will not be that way for ever.


    How often does a consumer by a brand new car? In fact majority of people by second hand cars and average time for keeping a car before buying another. Even if you could get battery technology and chargers to speed charge at same rate to put liquid fuel in a car, what about all the existing EV cars with older battery technology they wont get the benefit of the faster charging times. Thats the issue we have with the existing fast chargers not every car can charge at those speeds.


    I do think some people are rather like rabbits in a cars headlights with EV cars and chargers they just cant see, cant see where they are going and dont know unfortunately whats about to hit them.


    GTB


Reply
  • Broadage,

    Ok a 20MVA  substation and the charging units themselves, cost to procure and install 20MVA substation, LV Panels and the charging cabinets and charging units, all the civil and electrical installation work and ongoing maintenance involved presuming that the local DNO/IDNO has a spare 20MVA just lying about.


    Ever wondered what the "Purchase" price would have to be per unit of electricity for the EV driver/customer that the buisness entity would then make a suitable commercial return for their investment that built and installed and runs the EV charging hub.


    Advancing technology and engineering is all very well and great and of course I support that, but it comes at a cost and the vast masses of people dont want to pay for that development nor indeed new technolgy when it first arrives, sometimes as engineers we can do things that are great, but if nobody wants the product or technology or its too expensive from what they already pay what was the point.

    Look back to introduction of the video recorder and Sony Betamax, VHS and even Philips 2000, everybody new which one offerred the better audio/video experience but where did things settle out for the masses globally?


    HM Treasury are already forecasting loss of revenue of fuel duty and they will want that money to come from the motorist in another form. That could be a tax on electricity used to charge EV's or as many suspect will be a charge per mile scheme based on usage and using national network of ANPR cameras. EV users think at this time running costs are low, but will not be that way for ever.


    How often does a consumer by a brand new car? In fact majority of people by second hand cars and average time for keeping a car before buying another. Even if you could get battery technology and chargers to speed charge at same rate to put liquid fuel in a car, what about all the existing EV cars with older battery technology they wont get the benefit of the faster charging times. Thats the issue we have with the existing fast chargers not every car can charge at those speeds.


    I do think some people are rather like rabbits in a cars headlights with EV cars and chargers they just cant see, cant see where they are going and dont know unfortunately whats about to hit them.


    GTB


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