EV general discussion
- Thread starter Ricochet J
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Between 3kW and 7kW depending on the initial outside temperature.
That’s the ICE facelift. This is the Electric. They’ve ditched the plastic cladding for better aero.
https://www.autoexpress.co.uk/hyund...-kona-electric-facelift-arrives-bold-new-look
Soldato
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He asked about energy use, not power demand.
The front end looks very Tesla like, which isn’t necessarily a bad thing...
I apologise I’ve missed some subtle difference between the energy consumed to heat the car and the power demand. As I understood the question, it was how much battery it took to heat the car. And in the case of the Tesla and the Kona, it’s between 3kW and 7kW. Contrary to popular belief, the cars usually use the battery to do anything and if they’re plugged in, they have to restart charging to make up for the energy used to heat the car.
less so on the ev update picture WJ just uploaded, but, compared to many suvs it looks like a large(inelegant) molding bolted into the wheel arch, must simplify construction/cost somehow, but still provide crash rigidity.
edit: indeed (marmite) tesla like .. is that the reference pattern now ?
cd is now 0.27 (down from 0.29) and the WLTP range is up from 285 to 300 miles. Still miles off the 0.23 of the Model 3 but they’re learning all the time. The rumour-mill has the drag CO-efficient of the Ioniq 5 at 0.25 which would be truly exceptional for an SUV.
how much energy ? largely irrespective of source, but if you could use the 'mains' there would be less losses, but, as discussed before, you'd pay daily unit rate.
Given the posted screen shots of the gui, I had thought this information would be geekily presented automatically
edit: merc cla has cd 0.22 , good aero is not a bev prerogative, but need frontal area too, to make drag calculation
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Pre-heating in the Ioniq had been great over the last week or so, since the cold spell started really.
Don't have mine plugged in, uses a couple of % and takes no more than 5-8 minutes, ready to get in a nice toasty defrosted car without ever leaving the house.
Don't have mine plugged in, uses a couple of % and takes no more than 5-8 minutes, ready to get in a nice toasty defrosted car without ever leaving the house.
Soldato
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7kW for 15mins is ~1.7kWh. For a trip of 6 miles you might have just doubled your energy use. Whilst still talking about 4 miles/kWh.
It’s just science.
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quote good on MINI SE electric. They raise the car to maintain ground clearance but redesign the whee arch cladding to optimised the wheel arch cuts and eyebrow proportions so the car doesn’t look like a startled cat without having to retool a unique bodystructure.
Other benefit of minor damage can be repaired with clip on parts rather than paint.
Ah, I beg your pardon. it only runs for 20 minutes maximum and shuts down. So 3kW in 20 minutes would be 9kWh and 7kW in 20 minutes would be 21kWh. It's massive. There is a whole sub-thread in the Tesla M3 thread about pre-heating and the effect on fuel economy for short trips.
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Yeah I wish this stuff was more obvious. And of course a preheating cycle is more of an issue with the larger batteries and greater thermal mass. In this weather my car probably needs 3 preconditioning cycles to get optimal performance for the range, reality is though you didn’t need all that mileage everyday but end up putting electric usage through the roof!
Its good logic for always being full on a road trip, when you need to fast charge on route the battery will already be up to temp thanks to the driving and regen etc.
Its good logic for always being full on a road trip, when you need to fast charge on route the battery will already be up to temp thanks to the driving and regen etc.
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I suppose all the cells are in series/solicited, so you have to heat everything up, otherwise, partial heating would be good,..... or just keeping it in a garage(bigger benefit vs an ice) -
No, I think it's right. I'm reading the % battery numbers off the screen so if it uses 5% battery in 20 minutes to heat the car and the battery is 64kW then that's 3.2kW used in 20 minutes so its 9.6kW/h. And if it's really freezing outside and I put the defroster on as well it uses 11% battery which is 7.04kW in 20 minutes which is 21.12kW/h. No?
It is, sort of. You can see the % battery state before and after and on the screen in the car you can see the energy consumption of the drive train, the HVAC, the car's 12V systems and something labelled as battery maintenance which is the heat pump and battery conditioner.
That's WAY better than the Kona then. On Monday morning the car was plugged in to the 11kW charger and ready to go at 100%. I started the full defrost program (with both windscreen and other boxes ticked) and it reported back after 15 minutes that the heating would not be available any longer in 5 minutes and then I got the 'Charge completed successfully' notification and it had used 11% of the battery in that time according to the Pod-Point App.
It's 3.2kWh of a 64kWh battery used in 20 minutes - you're mixing up kWh and kW
A kWh is a unit of energy (defined by the amount energy from 1kW of power for one hour) but it doesn't mean 'kilowatts per hour' in the way you're trying to use it.
What you're calling '9.6kW per hour' is just a 9.6kW draw. The fact you have a 9.6kW draw for 20 minutes, means you consume 3.2kWh of energy from your battery.
Edit - from Wiki may help to clarify: