45 Minute QuickCharge

[widodh]

I'm helping doug a bit by cleaning up this forum and making this forum more "open" to new users. Some threads are very old and contain outdated information in their startposts.

How does the 45 Minute Quickcharge work?
At the October 1st 2011 event Tesla Motors revealed that the 45 minute QuickCharge of the Model S will be done with a 90kW DC charger.

The biggest battery pack will hold about 85 to 90kWh of power. Charging from a 10% SoC (State of Charge) to 80% can be done in 45 minutes. Charging to a 100% will take a longer time.

With a 30 minute charge you will get somewhere around 150 miles of range. (Only with the 300 mile pack and maybe with the 230 mile pack)

What kind of charger will they use?
Tesla claims to have developed a new in-house charger consisting of 9 10kW chargers as found in the Model S. By placing 9 of these chargers (outside the car!) in parallel they would be able to deliver 90kW of power.


What kind of connector will they be using for this?
At the same event Tesla also showed their new connector. This "Tesla-only" connector will be able to handle up to 20kW of AC power through the HPC 2.0 EVSE or 90kW of DC power with the new charger.

At the moment we are not sure which protocol Tesla will be using, but it is almost certain that without an adapter the Model S will NOT be able to charge from existing CHAdeMO chargers like used for the Nissan Leaf.


Will I be able to install this charger at home?
No, probably not. You will need a 3-phase 480V ~120A connection, not something you will find in a regular house.


Where will I find these chargers?
Tesla will be installing these DC chargers along the major interstates throughout the US (and Europe?).

A lot of discussion about this is still going on, this can be found at: Tesla DC charging network

Tesla told that the first charger will be placed at Harris Ranch, CA along the I-5.

[Eberhard]

one single charger use 40A. 9x10kW uses 277/480V 120A 3-phases

[TEG]

one single charger use 40A. 9x10kW uses 277/480V 120V 3-phases

What does 120V signify there?
Does your description imply that this would be compatible with installations in both Europe and USA from the same model?

[W.Petefish]

120v above ground.

[VolkerP]

I think Eberhard wanted to type 120A because 3x40A=120A.

[PV-EV]

Three phase AC power is given by amps times volts times 1.73 times power factor. A 90KW load at 480 volts three phase is about 108 amps. Power factor is less than 1 so the amps will be some amount bigger.

[Mycroft]

For some reason they also wanted to stress that you would be able to get 150 miles of charge in 30 minutes. Of course that would be with the 300 mile battery pack and possibly the 230 mile pack.

[TEG]

Other cars with smaller packs advertise quick charging in under 30 minutes, so I think Tesla may want to make the same statement.
Because they have a much bigger pack with longer range, their ability to state quick charge in minutes is at a disadvantage since their full quick charge provides a lot more range. So, basically saying "our partial charge is better than your full charge, and we can do it in the same time" means that it could be better marketing to talk about half hour partial charges. That and I think they know that battery longevity will be better if you don't do empty-to-full "supercharges" very frequently. My guess is that the batteries are better able to handle that rapid recharge current in the middle of their SOC range, but don't like it as much at the extremes (almost empty / almost full.)

They will just need a higher density of public supercharger deployments to make this position workable.

[Kipernicus]

HPC 2.0 charger

Should this be more accurately written as HPC 2.0 EVSE ?

[widodh]

Should this be more accurately written as HPC 2.0 EVSE ?

You are right! Done.

I changed the Amps from 140 to 120, since you still need a higher capacity then you are actually drawing from the grid.