ChaDeMo: possible replication discussion.

Post by **Lismore_Doug** » Sun, 07 Jul 2013, 03:27

Hi,
I would like to discuss the ChaDeMo DC charging: Info links, possible plug suppliers, its use, & potential for hacking.

I searched the web, but found little except for some information on the specification. I have just bought an Imiev, which of course has a ChaDeMo socket. There does not appear to be a realistically priced supply of plugs to fit the socket.

I would like to propose that consideration be given to functionally copying the plugs, which should be possible with 3D printers. Unfortunately do not have the Drafting or a 3Dprinter to undertake such a task. The actual contacts can be from a different style plug: I doubt they are an odd size).

I have also mentioned this on this myImiev list:
<http://myimiev.com/forum/viewtopic.php? ... 135#p11135> to broaden the appeal.

regards Doug

Post by **acmotor** » Sun, 07 Jul 2013, 06:28

Surely someone in China is looking at a CHAdeMO look alike ? They did so with the J1772 connector.
You may need a CHAdeMO plug to make a copy ?

Post by **Lismore_Doug** » Sun, 07 Jul 2013, 14:28

Hi, as far as having the plug to replicate: they seem to de unobtainium, so it may have to be done blind. Measuring the socket hould be easy enough, & there may be moulding products that could copy the socket hole (Buy a socket from a wreck perhaps?: there must be wrecks in Japan by now: they ave delivery vans & all sorts of vehicles)
Copying blind also has one other advantage: the DCMA can be invoked to protect IP: cloning without similarity could protect against that. (The yanks have a lot to answer fr with DCMA & their patent laws)

regards Doug

Post by **Lismore_Doug** » Mon, 08 Jul 2013, 04:45

<http://www.plugincars.com/mitsubishi-un ... 14873.html>

Interesting: exactly what I would like!

regards Doug

Post by **acmotor** » Mon, 08 Jul 2013, 05:29

Yes, and nissan have a bidirectional one...
forum topic

Interesting simple version of CHAdeMO plug !!

Post by **coulomb** » Mon, 08 Jul 2013, 13:51

Lismore_Doug wrote: exactly what I would like!

Except that Japan uses 100 VAC mains. Not even 120 V, so a 120 V to 240 V transformer would only give you 200 VAC. Most appliances would work with that, I suppose.

Maybe it is switchable to 120 V, or even to 230 V.

Maybe also one day it will be standard to have a high power charger (say 6.6 kW) that is bidirectional (using a full H bridge), so all EVs can provide AC power suitable for your region (perhaps via an IEC socket, so that you can use standard computer cords). Though to get decent power, you'd want a different connector/outlet.

Post by **coulomb** » Wed, 10 Jul 2013, 04:05

The open source 10 kW charger project, which now has 12 kW, 20 kW, and soon much larger versions, will have a CHAdeMO model soon:

Re: 25-40kW PFC charger for High-Voltage Batteries (300V+) - less than $1,500 to build

"We are working on a CHAdeMO with some partners now. Hopefully this summer... " (By which he means American summer, or Australian winter, or very soon now. That post was about three weeks ago as I write.)

Presumably, this means that they have sourced the CHAdeMO plug. But also, of course, you could build an actual fast charger for moderate money, too, perhaps from a kit. But maybe these chargers, being through a partner of some sort, might be purchase only.

Of course, how fast you could charge would depend on how much grid power you can get, how much solar power you have, and so on.

From the Electric Motor Werks site:

At present, their on-line store has 1772 plugs and sockets, but not CHAdeMO.

Post by **PlanB** » Thu, 24 Oct 2013, 21:29

Valerun (with the PFC charger) was getting his from Uchen

Post by **acmotor** » Fri, 25 Oct 2013, 06:20

That alibaba link says CHAdeMO but the image is not of a CHAdeMO connector??
http://au.alibaba.com/product/807884861 ... -400V.html

compare with iMiEV CHAdeMO connector....

link to CHAdeMO site confirms iMiEV connector
http://www.chademo.com/wp/technology/details/

Is this alibaba unit actually the correct connector ?

Post by **Adverse Effects** » Fri, 25 Oct 2013, 14:40

acmotor wrote:Is this alibaba unit actually the correct connector ?

wouldnt suprise me if it wasnt correct here is CHAdeMO DC and J1772 AC, Alternative Sockets as Mounted in the Nissan Leaf

CHAdeMO quick charger connector,125A 400V from Alibaba.com

nope that isnt correct

i carnt find a pic of that plug anywhere other alibaba

Post by **Tritium_James** » Fri, 25 Oct 2013, 15:23

That's the Chinese version of Chademo. They've rolled their own copy, used entirely on in-country vehicle and charger sales. It's not compatible with actual Chademo.

Post by **jonescg** » Fri, 25 Oct 2013, 16:38

So what is the Chademo protocol? If I was building an EV and wanted to future-proof it for Chademo use, what switching logic would I need to put in place in preparation for an off-the-shelf Chademo socket?

Post by **acmotor** » Fri, 25 Oct 2013, 17:09

http://www.chademo.com/wp/technology/details/

I would be thinking that the Chinese have stollen the name and ignored copyright as ususal ?

Charging standard ???? look what menekes-ites have done to de-value 'standard' !