Society of Automotive Engineers adopts J1772 combo plug as standard for electric vehicles

Oct 19, 2012 by Bob Yirka report
SAE J1772 plug. Credit: Michael Hicks/Wikipedia

(Phys.org)—The Society of Automotive Engineers (SAE) has voted to adopt the J1772 Revision B combo plug as the standard plug for use in electric and hybrid vehicles sold worldwide. The design allows for both AC and DC charging and its adoption means all car manufacturers except Tesla and several Japanese companies including Nissan and Mitsubishi, will begin using the new standard on all new vehicles.

The acceptance of the new standard will be a first for North America and could provide the push needed for commercial and public groups to begin building charging stations. The standard allows for charging at home using either a 120 or 224 AC line – the first is what is normally found in home wall outlets; the second for dryers or ovens. But it will also allow for DC charging which is where the industry is headed as it allows for far faster charging times – minutes versus hours for AC. It's the DC option that provides the basis for creating quick charging stations and perhaps the long anticipated widespread of .

The Japanese holdouts will continue to use the CHAdeMO standard, which is already widely supported in Japan and is based on quick charging using DC current. Tesla has created two of its own standards for each of its two models of vehicles and hasn't yet responded to the news of the adoption of the new standard. Nissan on the other hand has released a statement expressing disappoint with the decision made by the group and with it an implied critique regarding the timing of the adoption, coming after so many vehicles on the road are already configured for using the CHAdeMO standard.

For consumers the adoption will mean they will continue to be able to charge their vehicle at home, though they may have to purchase a as well depending on which vehicle they buy. It will likely also mean future charging stations they visit will offer several plug options, meaning drivers will have to know which standard their car has so they will know which to use.

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User comments : 20

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Husky
3 / 5 (2) Oct 19, 2012
So, this looks like a French Chinese coup détat.
antialias_physorg
4.8 / 5 (4) Oct 19, 2012
meaning drivers will have to know which standard their car has so they will know which to use


With the configuration of the plug at last you don't have the problem that you can accidentally use the wrong charging station. So I'd hazard that the above mentioned issue is a non-issue. (and I'm betting that public charging stations will have these plugs uniformly color-coded in no time)
El_Nose
not rated yet Oct 19, 2012
ahh but will we see charging stations that charge by the quality of the electricity ... you can recharge in the 3 minute line for 30.00 or rechrage in the 10 minute line for 15.00
ryggesogn2
2 / 5 (9) Oct 19, 2012
What a concept! An industry association adopts standards instead of being imposed by some govt agency.
antialias_physorg
not rated yet Oct 19, 2012
you can recharge in the 3 minute line for 30.00 or rechrage in the 10 minute line for 15.00

That may actually not be such a bad business model (maybe not with such exterme differences). By updating the price frequently you could even the load on your charging station.
Egleton
1 / 5 (1) Oct 19, 2012
Metric?
NotAsleep
4.8 / 5 (6) Oct 19, 2012
What a concept! An industry association adopts standards instead of being imposed by some govt agency.

If this is the first time you've seen this happen then you've been out of the loop for a while
jdbertron
1.1 / 5 (7) Oct 19, 2012
Dumb.
How about designing the batteries so they can be swapped, at home and for long trips.
NotAsleep
4.8 / 5 (4) Oct 19, 2012
Dumb.
How about designing the batteries so they can be swapped, at home and for long trips.

They're standardizing a plug, not redesigning the concept of a car genre. Regardless, there is plenty of effort looking into the battery swap technique
_traw_at
4.8 / 5 (5) Oct 19, 2012
What a concept! An industry association adopts standards instead of being imposed by some govt agency.


In my experience, most standards are in fact set by voluntary industry associations, and only afterwards turned into gov't regs. Sometimes governmemt agencies are involved in the process, (something which is what they are in fact paid to do), and presumably other times they're not part of the standards committees.
_traw_at
5 / 5 (2) Oct 19, 2012
I thought the SAE had adopted this same plug as the standard several years ago. ??

You might find this humourous:
"CHAdeMO is an abbreviation of "CHArge de MOve", equivalent to "charge for moving". The name is a pun for O cha demo ikaga desuka in Japanese,[1] translating to English as "How about some tea?", referring to the time it would take to charge a car.[2] CHΛdeMO can charge a car in less than half an hour."
Source:
http://en.wikiped.../CHAdeMO
_traw_at
5 / 5 (1) Oct 19, 2012
Ah, the SAE adopted this plug in 2009, but had to refine some details.
Had to stop for tea, I guess.
http://en.wikiped.../CHAdeMO
christ_jan
5 / 5 (4) Oct 19, 2012
you can recharge in the 3 minute line for 30.00 or rechrage in the 10 minute line for 15.00

That may actually not be such a bad business model (maybe not with such exterme differences). By updating the price frequently you could even the load on your charging station.

How about a smart network of charging stations that can inform each other and the users where to go and when.
Sonhouse
not rated yet Oct 19, 2012
So what are the specs for this plug? They say 120/240 but how much current can you shove through them without overheating? That directly effects charge times. 10 amps at 240 volts? 2400 watts for 8 hours then to get a 19 Kwhr battery fully charged.

20 amps? 4 hours. 80 amps? 1 hour. So what is it?
VendicarD
2.6 / 5 (5) Oct 19, 2012
It is a refreshing change since rational standards decisions are typically made by Corporations to exclude competition from the marketplace.

I note that they adopted the Socialist European standard.

"The main stimulus for the development of SAE J1772 came from the California Air Resources Board"

So RyggTard has the California Government to thank for the standard.

"An industry association adopts standards instead of being imposed by some govt agency." - RyggTard

Poor RyggTard. He hates the California Government.
Parsec
not rated yet Oct 19, 2012
When new standards are created, there are always a LOT of manufacturers using old standards that complain. In the early 1800's, the wide variety of screw sizes and types led to an international screw standard committee, in which many of the different types of screw types were standardized. I was around in the early days of the computer when the number of types of "standard" cables was horrible. I still have a box of old cables in my garage of various types no longer used. The USB standard has simply taken over.

So will this standard. This really is a much bigger deal than most people give it credit for. It will allow a true international standard where people can pull up to a electric station for a charge and be confident that the station can service them.
Parsec
1 / 5 (1) Oct 19, 2012
What a concept! An industry association adopts standards instead of being imposed by some govt agency.


In my experience, most standards are in fact set by voluntary industry associations, and only afterwards turned into gov't regs. Sometimes governmemt agencies are involved in the process, (something which is what they are in fact paid to do), and presumably other times they're not part of the standards committees.

Actually what usually happens is that government mandates a certain standard part for all of its purchases. This forces anyone who wants to deal with the government to use that standard. It makes sense, because no one in their right mind would actually want one part to be incompatible with a part in a different piece of equipment. Most companies will do the same.
VendicarD
not rated yet Oct 19, 2012
iPlod docking port.

"It makes sense, because no one in their right mind would actually want one part to be incompatible with a part in a different piece of equipment."
antialias_physorg
not rated yet Oct 21, 2012
Let's not blow this out of proportion. It's a plug standard - not a power standard. If you want to continue using CHAdeMO then just get an adapter plug.
Syndi
not rated yet Oct 22, 2012
Battery swapping is being looked into by BetterPlace. Check it out. betterplace.com
And the DC Combo can be reviewed at rema-ev.com