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State of the mod request: CCS DC fast charging

14862 Views 60 Replies 14 Participants Last post by  remy_martian
some clarifications about what i mean:
  • onboard charge controllers or BMS' or both, not at-home charging boxes
  • CCS plug, not chademo. Chademo in my area especially is falling down very quickly and even then very few of them are even fast chargers
  • by "fast charger", i mean the standard 0-80% in 30 minutes speed
  • in my particular application, i'll be using only a 32kw total capacity battery, so having a way to fast charge so i don't need to worry as much about range is very high priority for my build

so, what's the current state of this? Last i heard, orion was looking into putting this into their BMS'
https://www.diyelectriccar.com/forums/showpost.php?p=1051737&postcount=4
but i can't find any evidence of aftermarket or open source approaches, let alone how successful they've been
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Why are you even talking about this? I don't need your opinion on my EV setup. I was looking for the status of CCS so that I can make plans to enable it.
P.S. There are only like 8 CCS charging stations in rural Kansas so CCS will do little good for me anyways at present.
Emissions applies to the year of the newer engine manufacture date, afaik.
So glad your still talking about the generator.
Just filling in time, waiting for a North American CCS solution.
Just filling in time, waiting for a North American CCS solution.
What makes you think that the North American Solution is any different than the EU one? You do know that there exist CCS1/CCS2 passthrough connectors right? The only difference between the two connectors is that the CCS2 supports 3 phase AC while the CCS1 connector does not. Both use the same protocol to communicate.

You should be able to pull a i3 LIM from a north american i3, along with the CCS1 connector, and set it up to charge using CCS.

ga2500ev
The LIM part number is different for a North American i3.

The CCS1 DC connector is very different from the CCS2 connector, even though they may look identical face-on...they are offset from each other in the insertion direction.

The PLC protocol is the same. The higher layers of the handshake may be different.

Show us where someone in North America has made the EU hack work with a NA public charger. "Should be able to" guessing and extrapolation doesn't play when BMW and Tesla modem part numbers are different for the two regions.
The LIM part number is different for a North American i3.

The CCS1 DC connector is very different from the CCS2 connector, even though they may look identical face-on...they are offset from each other in the insertion direction.

The PLC protocol is the same. The higher layers of the handshake may be different.

Show us where someone in North America has made the EU hack work with a NA public charger. "Should be able to" guessing and extrapolation doesn't play when part numbers are different.
Not my job. There's been a ton of work done in this area. If you're simply going to wait for someone to present you a complete solution, maybe you should simply consider purchasing a commercial EV retail.

Both this site and that site are for DIY people who dive in and try to figure it out. There's no reason to think that the two systems are completely incompatible.

Good Luck,

ga2500ev
Maybe I should buy a retail EV. Oh wait...I have four here.

Yet I'm still here. Waiting, while you give false assurances to people reading the thread that something actually works...you brought it up, so it IS your job to prove your assertion that it works vs bait people to spend a grand to find out they have a pile of junk that sits there doing nothing as they get laughed at, at a public charger.

Yes, the EU version works. In the EU. Only. I'm more than happy to have someone prove me wrong.
Maybe I should buy a retail EV. Oh wait...I have four here.

Yet I'm still here. Waiting, while you give false assurances to people reading the thread that something actually works...you brought it up, so it IS your job to prove your assertion that it works vs bait people to spend a grand to find out they have a pile of junk that sits there doing nothing as they get laughed at, at a public charger.

Yes, the EU version works. In the EU. Only. I'm more than happy to have someone prove me wrong.
I ended up doing your homework for you looking into another project. Specifically this OpenInverters thread on the Tesla charging port with the US CCS controller:


Matthew Drobnak is specifically working with the US Tesla controller. Has a post near the end showing CCS charging using the Tesla CCS adapter on a US Tesla model 3 on a CC1 North american CCS station.

You're welcome.

ga2500ev
"Yes I was able to start an AC charge (or at least make the relay go on the wall plug side...), but no idea if the DC stuff works."
"Yes I was able to start an AC charge (or at least make the relay go on the wall plug side...), but no idea if the DC stuff works."
Keep reading. That thread goes on for three years of development. Specifically:


I got a datalog for CCS charging from 77% to 80% hehe.
ga2500ev
He has AC charging on CCS working.

"No idea if I broke any DC stuff haha."

And then it all stops 8 months ago.
He has AC charging on CCS working.

"No idea if I broke any DC stuff haha."

And then it all stops 8 months ago.
I'm currently doing testing with the GM bolt charger. I'm less interested in the LIM for US usage since it's not really abundant. Bolt parts and model 3 parts are what I'm going to focus on. I'll come back here if I end up getting anything to work.
Very nice.

I have a roadgoing Bolt EV, my daily, so hit me up if you need CAN sniffing.

I won't do anything destructive in terms of probing, and will need handholding as I'm too busy to go through a learning process these days, but I am an EE and the offer's on the table if you need it.

Good luck with it.
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If the GM charger's level 3 DC component can be split out from it's level 2/1 component.....I thought they were combined and joined at the hip?
Why does it matter?

The car does Level 2 and DC FC. You can't live with the flexibility of either AC or DCFC in the same CCS connector?

Why would you want DCFC on its own? The state of DCFC in this country is abysmal. I've found myself unable to charge DCFC a few times, but Level 2's are numerous as backups (slower). Some are even free while you shop.

Not sure what you mean by "combined and joined at the hip"
Ah, I mean more like I believe the bolt has very slow level 2 charging.
A model 3 charger by comparison is 12kw max which is fantastic
So being able to use both fast level 2 and CCS would be gr8
I thought you had a puny battery. Now it's 100kWh? Why do you want to cook your pack with fast charging regularly? A DIYer is not likely to have the engineering and manufacturing tools/budget to design a >100kW charging rate.

It's plenty fast. Go to sleep, car's fully charged in the morning. The silliness of ICE people wanting 500 miles of range and a fill in 20 minutes when the car's parked at home for 10 hours, at least. Last I heard, iirc, you were around a 50kWh pack. That's a 7 hour fill at 7kW which is the Bolt charger at 240V. Perfectly adequate. I got by in the first two years on a 120V EVSE on a 12guage extension cord. Only reason I'm at 240V Level 2 is the EVSE was free in an engineering pilot study with my utility.

Hang a Model 3 charger on the garage wall and DCFC at home if you have to drive 200 miles home for lunch and then get back to work.

Overspec costs money and creates complications. By the time you're done, the landscape for CCS DIY will change, so... 🍿
I was curious, so I looked up the BMW i3's numbers:
Product Font Screenshot Circle Terrestrial plant

Pretty much identical to Bolt EV.
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True, but I believe from the various documentation, the ccs solution based on i3 parts has the LIM dealing with the DC fast charging, and something else can run the AC bit, so those can be split apart

But if it's identical to the GM and folks want an all in one solution, that works out quite well

Actually just noticed the 2022+ Bolt euvs have an 11.5kw obc which is pretty dope
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