SAE vs CHAdeMO

[TEG]

This is an old article, but it remains an interesting topic:

CHAdeMO General Assembly Contemplates SAE Plug Competition - HybridCars.com

We don't (yet) know if Model S will ever support use of either of these types of offboard DC quick charge systems.

Some related old threads:

DC Quick Charge vs Supercharge
Likelihood of a CHAdeMO adapter for the Model S
Will other brand vehicles be able to use the Supercharger?
TEPCO/CHAdeMO Level III charging station/connector
Open CHAdeMO
Charging Station standards
What charge port connector?
SAE announces the 'official' charging plug standard for North America
New Model S owner charging primer (US)


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Another article:
http://www.gizmag.com/sae-j1772-comb...tandard/24607/

J1772 beat out its main rival, the Japanese CHAdeMO plug (which is also available as an option for the Nissan Leaf and is used in over a thousand chargers installed in Japan), along with Tesla’s proprietary Supercharger system. Whether the SAE standard will see an end to these rival plugs or the beginning of an automotive version of VHS versus Betamax remains to be seen.

[100thMonkey]

I would really like it a lot of Tesla would a come out with a CHAdeMO adapter. the number of CHAdeMO chargers in WA and OR is growing practically daily and it would be very handy to be able to access them. From the looks of it there will never be the number of Tesla chargers as their are CHAdeMO already here.

[TEG]

...From the looks of it there will never be the number of Tesla chargers as there are CHAdeMO already here...

Although, (obviously) a longer range vehicle doesn't need as high a density of charging locations.

I wonder if Tesla Gen-III ("Bluestar") will offer "Supercharging" in a vehicle with < 200 mile range? If so, Tesla might want to increase the density of superchargers a few years from now. For now, it seems the 160 mile range Model S won't offer Supercharging so it becomes a "moot point" for the time being.

A couple years ago I think some people thought "I can get by with a 160 mile range entry level Model S as long as I can quick charge along the way to my destination." Now that we know that Tesla doesn't plan to offer Supercharging on the entry model it changes the utility of that variant and encourages distance drivers to pay for an upgrade to the bigger pack versions.

[100thMonkey]

I do realize that my frame of reference is the Leaf yet I am pretty sure that the need for quick charging will still be there, just on a different scale. with my recent trip to CA via I-5, I was reminded that real world complications will cause wild variations in range, such has having to heat the cabin in a 4 hour traffic jam in heavy snow. I don't think we will ever have too many charging options. having a CHAdeMO adapter would keep the options open for the unexpected situations that invariably crop up.

Although, (obviously) a longer range vehicle doesn't need as high a density of charging locations.

I wonder if Tesla Gen-III ("Bluestar") will offer "Supercharging" in a vehicle with < 200 mile range? If so, Tesla might want to increase the density of superchargers a few years from now. For now, it seems the 160 mile range Model S won't offer Supercharging so it becomes a "moot point" for the time being.

A couple years ago I think some people though "I can get by with a 160 mile range entry level Model S as long as I can quick charge along the way to my destination." Now that we know that Tesla doesn't plan to offer Supercharging on the entry model it changes the utility of that variant and encourages distance drivers to pay for an upgrade to the bigger pack versions.

[ASG]

I would really like it a lot of Tesla would a come out with a CHAdeMO adapter. the number of CHAdeMO chargers in WA and OR is growing practically daily and it would be very handy to be able to access them. From the looks of it there will never be the number of Tesla chargers as their are CHAdeMO already here.

Is there a map that breaks down which chargers are CHAdeMO, and which are actually compatible with the Tesla? I was assuming that the OR EV highway project would be J1772 and therefore compatible....is that the case?

[Zzzz...]

Basic difference is that CHAdeMO supports 60kW DC max, while SAE supports up to 100kW.

Other important point, SAE would probably be much cheaper because CHAdeMO is a proprietary tech controlled by Japanese corporations. CHAdeMO would require heavy royalties to be paid on both sides of the plug eventually (both by EV and charger manufacturers). SAE on the other hand seems to aim for international standardization. Parts of SAE might be covered by some patents but chances are that it would be cheaper from the beginning and after patents expiration would be totally free.

BTW, there are reports (1, 2) that Tesla will support CHAdeMO. I think TM will support both eventually.

[TEG]

Other important point, SAE would probably be much cheaper because CHAdeMO is a proprietary tech controlled by Japanese corporations. CHAdeMO would require heavy royalties to be paid on both sides of the plug eventually (both by EV and charger manufacturers)...

Isn't CHAdeMO opening things up now? :
Open CHAdeMO
http://www.chademo.com/pdf/CHAdeMOtsjis.pdf

[stopcrazypp]

Isn't CHAdeMO opening things up now? :
Open CHAdeMO
http://www.chademo.com/pdf/CHAdeMOtsjis.pdf

Open standards can still involve licensing fees, although they must be offered under FRAND (fair, reasonable, and non-discriminatory) terms. I know TEPCO has charged license fees to Akerwade before for CHAdeMO:
http://www.greencarcongress.com/2010...-20100115.html

I don't believe SAE charges any license fees for J1772.

[ipdamages]

Here is a link to an upcoming webinar on this topic.

Fast DC Charging for Electric Vehicles Navigant Research

[efusco]

Here is a link to an upcoming webinar on this topic.

Fast DC Charging for Electric Vehicles Navigant Research

thanks, signed up, might be interesting.