The Tesla Thread

Angilion said:
Looking at charging from another angle - if everyone used an electric car, could the UK's electricity generating and distribution setup handle the increase?
.
Click to expand...

40-70% up take is where the problems really start. Of course vehicle to grid systems would allow EV to reverse power flow for those peak demand situations. We are closer to the limit of peak power demand rather than total energy consumption.
 
Jonnycoupe said:
40-70% up take is where the problems really start. Of course vehicle to grid systems would allow EV to reverse power flow for those peak demand situations. We are closer to the limit of peak power demand rather than total energy consumption.
Click to expand...

Nobody is going to be pleased to wake up finding their car only half charged because everyone in their Street was up late watching the X Factor final! :p
 
276k pre ordered by end of Saturday. That has to be fastest selling car ever?

Although good god some people are going trot be waiting like 5years. Unless they manage to massively ramp up production.
Although just read their factory was designed to build 500k a year, but at the moment only utilized two production lines for about 100k cars in 2016, still that requires a huge increase in capacity over next two years, basically needs at least doubling production year on year.

Bet Chevy are glad they have got into evs, and the others will be rattled
 
Last edited:
Skeeter said:
When you say "less than an hour", what do you mean? A 22kW charger will put about 20 miles of charge into a Tesla per hour, so a full charge of 200 miles is 10 hours.

Edit: Sorry, maths fail. The website states 10 miles from an 11kW charger in half an hour, meaning a 22kW is 40 miles per hour of charge. So a 5 hour full charge.

In a previous thread it was highlighted that it's a lot easier to get higher amperage or voltage supplies into your home in North America than it currently is in the UK. Upgrading to a 200a supply would be simply not possible for most people here. 3 phase is almost unheard of for domestic homes. The UK may well be held back due to its infrastructure compared to places like Canada/US.
Click to expand...

I was just using the numbers in the original post I quoted. If they are wrong them my estimations are wrong as well.:p
 
Amp34 said:
I was just using the numbers in the original post I quoted. If they are wrong them my estimations are wrong as well.:p
Click to expand...

You didn't calculate using my totally pie in the sky impossible 720kW figure, did you? :p

Home chargers are 3kW or 7kW ( up to about 14 miles per hour of charge). 11kW and 22kW chargers are up to 40 miles per hour charge. Then 50kW is the standard public charge point fast charger, and the top is Tesla superchargers at 120kW.

The 720kW figure was made up to demonstrate the amount of power that would be needed to charge a Tesla 170 miles in 5 minutes. It wouldn't ever happen.
 
Wow. So posts pointing out Glaucus' inability to operate a keyboard are deleted, yet his continual stream of idiotic jibberish is allowed to stay? :rolleyes:
 
Skeeter said:
You didn't calculate using my totally pie in the sky impossible 720kW figure, did you? :p

Home chargers are 3kW or 7kW ( up to about 14 miles per hour of charge). 11kW and 22kW chargers are up to 40 miles per hour charge. Then 50kW is the standard public charge point fast charger, and the top is Tesla superchargers at 120kW.

The 720kW figure was made up to demonstrate the amount of power that would be needed to charge a Tesla 170 miles in 5 minutes. It wouldn't ever happen.
Click to expand...

Yes I did... :o

It did seem a bit too good to be true... :p

That said, most of the points still stand. For the average driver there wouldn't be an issue with an electric car when it's charged overnight.
 
Only while it's only one EV per household, and its a second car.

At 3kW each (which is what most people would be limited too with 2 EVs at home on charge at once) it would take about 30 hours to fully charge a Tesla.
 
Last edited:
BigglesPiP said:
Anyone else here put down a deposit?



Nope, the batteries in the Tesla are getting a easy life. Charging from a supercharger at the rate they do is considered a slow charge when you look at an individual cell.

You can disregard the physical size and consider the rate of charge per amp-hour of capacity. So a 1C charge is charging the battery from 0% to 100% in 1 hour, 2C is half an hour. You have to taper off as the battery gets close to full in reality to avoid over-volting the pack though. But the point is, 1C is considered slow for a Lithium cell, I have a Makita drill that charges at about 4C. The Tesla charges much faster on re-generative braking, but this is restricted when the battery is outside of ideal conditions. The real limiting factor of the supercharger is the power you can deliver to the unit and how much current you can safely dump through a connector that the user operates.

Supercharging does not impact the life of the battery.
Click to expand...

Supercharging is recognised as not good for the batteries, you need to look at the internals of that vast multi cell pack! The thermal management of the tesla cells is pretty terrible, same as the de rate performance on track days or constant load. A load of regen energy will dissipate heat nicely over the prevailing minutes.
 
Glaucus said:
276k pre ordered by end of Saturday. That has to be fastest selling car ever?

Although good god some people are going trot be waiting like 5years. Unless they manage to massively ramp up production.
Although just read their factory was designed to build 500k a year, but at the moment only utilized two production lines for about 100k cars in 2016, still that requires a huge increase in capacity over next two years, basically needs at least doubling production year on year.

Bet Chevy are glad they have got into evs, and the others will be rattled
Click to expand...

There not sales? There not even non refundable deposits. Plus people have been getting double emails suggesting they have been counted twice...
 
Skeeter said:
Only while it's only one EV per household, and its a second car.

At 3kW each (which is what most people would be limited too with 2 EVs at home on charge at once) it would take about 30 hours to fully charge a Tesla.
Click to expand...

Today,

But i'm pretty sure in 3 years time when the 3 comes out there will be a simple way of upgrading your service in the UK. In 20 years Im pretty sure the infrastructure will be able to cope with the number of EVs on the road then.

Jonnycoupe said:
There not sales? There not even non refundable deposits. Plus people have been getting double emails suggesting they have been counted twice...
Click to expand...

I do wonder how many of those pre orders are people planning on selling their car as soon as they get it. Get the order in now, save up for the cash price then sell it for 30-50% more the day you drive it out of the showroom.
 
Amp34 said:
I do wonder how many of those pre orders are people planning on selling their car as soon as they get it. Get the order in now, save up for the cash price then sell it for 30-50% more the day you drive it out of the showroom.
Click to expand...

Even if that's true, it's still real demand as there needs to be a buyer for those cars. :)
 
Amp34 said:
Today,

But i'm pretty sure in 3 years time when the 3 comes out there will be a simple way of upgrading your service in the UK. In 20 years Im pretty sure the infrastructure will be able to cope with the number of EVs on the road then.



I do wonder how many of those pre orders are people planning on selling their car as soon as they get it. Get the order in now, save up for the cash price then sell it for 30-50% more the day you drive it out of the showroom.
Click to expand...

Lol in 3 years time the national grid and our supply system will look worse not better as the planned closures of plants and the lack of replacements is frightening. It is currently nigh on impossible for a home owner to get the master fuse in a house uprated this is not scheduled to change!

Added to which nobody has even come up with a suggestion for the huge number of properties with no off street parking or reserved spaces I for example simple couldn't charge a car as there is no guarantee I can park within 100 feet of my house should it even be legal/practical/sensible to trail a lead!
 
Joe T said:
Even if that's true, it's still real demand as there needs to be a buyer for those cars. :)
Click to expand...

Well yeah, not arguing that. :)

I'm actually kinda kicking myself that I didn't preorder. If in 3 years I can afford the car then I'd probably be wanting it. If not I'm sure I could easily sell it for more than it was to buy. :p

Alex, I'm not arguing that everyone can have an EV car with today's tech. I'm pointing out that there are a significant proportion of people that do have off street/dedicated parking and could charge at home.

I've already said current tech is not the panacea for ICE cars, even for me. However it would be a solution to a lot of people's car habits, those that have off street parking and commute to work regularly (which would be close to or at 30-40% of the population at a guess). For a two+ car family having one of the cars as an EV is a practical possibility even today for a significant proportion of people, the main issue at the moment is cost.

We will always need some vehicles that run on a different sytem, wether that be petroleum based or hydrogen (as an example), even if for those small proportion of people that live in the Australian outback, or that work in minerals exploration, where thousand + mile ranges are occasionally needed. Having some kind of spare lightweight fuel is going to be a practical necessity for a long time to come, even if everyday useage is covered (until fast, reliable solar charging or other kind of electrical creation becomes possible, of batteries become insanely light).

Interesting to know that there's difficulty uprating fuses in the UK, any particular reason why?
 
Last edited:
a1ex2001 said:
Lol in 3 years time the national grid and our supply system will look worse not better as the planned closures of plants and the lack of replacements is frightening. It is currently nigh on impossible for a home owner to get the master fuse in a house uprated this is not scheduled to change!

Added to which nobody has even come up with a suggestion for the huge number of properties with no off street parking or reserved spaces I for example simple couldn't charge a car as there is no guarantee I can park within 100 feet of my house should it even be legal/practical/sensible to trail a lead!
Click to expand...
What about Wireless charging?

:D:D
 
You must log in or register to reply here.
Back
Top Bottom