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TEPCO/CHAdeMO Level III "quick" charging station/connector
- Thread starter doug
- Start date
I was talking to a rep from Schneider Electric recently, and he said that their CHAdeMO chargers produce 600 VDC.
Tesla has stated, I believe, that the Model S Superchargers are 480V 200A.
Sounds to me like their could be a more fundamental incompatibility than protocols, unless the CHAdeMO chargers can dial down to the lower voltage.
Can anyone confirm this?
Tesla has stated, I believe, that the Model S Superchargers are 480V 200A.
Sounds to me like their could be a more fundamental incompatibility than protocols, unless the CHAdeMO chargers can dial down to the lower voltage.
Can anyone confirm this?
I had always thought the standard was for "up to 500V" which kinda implies it's variable.
Here's wikipedia for what it's worth:
CHAdeMO - Wikipedia, the free encyclopedia
Here's wikipedia for what it's worth:
CHAdeMO - Wikipedia, the free encyclopedia
stopcrazypp
Well-Known Member
I think input matters more than output (but usually input is standardized anyways). The output of a DC charger has to be variable for two reasons:
1) lithium batteries are charged with the CC-CV (constant current-constant voltage) method, which means the voltage will vary a lot even during charging of the same battery.
2) the appropriate charging voltage (and nominal pack voltage) varies with every different car/battery pack (it's usually around 300-400V, but the specific number varies a lot). It's the car that tells the charger what voltage to charge at.
W.Petefish
Active Member
I think that CHAdeMO can go as high as 600v to accommodate some battery packs. BUT it uses a controlled rectifier and driver so it can go as low as 200v according to Blink Network and Ecotallity.
You could put in 480 VAC plugs all along your shop bays. And just move around 2 chargers to each car. Plug in both ends. You could have room to park 16 cars, but only 2 chargers. The cost to put in the 16x 480VAC outlets would be relatively cheap. Then you don't have to shuffle cars around to get the EV in the EV stall.
I think that Tesla will tell us that the day to day charging should be done at 20kw or less for the health of the battery. Fast charging constantly will likely take some life from the pack.
That charger can also take 208/240V input. Although it is a bit "overkill" for that purpose, it could still be handy for a shop to be able to charge LEAFs at ~12kW (240V@50A) which will recharge a lot quicker than the onboard 3.3kW (240V@16A).
This is a working version of Nissan's sub 10k CHAdeMO charger. It was being used to charge LEAFs on the test drive track at Geneva. There were 3 others around the exhibition. Roll-out can't be too far away now...
Otmar
EV Modder
Chademo (Tepco) spec is for DC 50 to 500V and 0 to 125A.
I have seen data on DCQC units which do not spec this entire range, or do spec even more.
Eaton quotes 156A while AeroVironment makes one that can be configured for CHAdeMO (EV125) that specs 275A and 50 to 600VDC output at up to 125kW.
With the cost of connecting such high power devices to the grid, I think it will be interesting to see how units with built in buffer batteries fare in the market.
DBT introduces new DC Quick Charger at Geneva Motor Show | DBT USA
I also got a brochure showing their AC / DC dual standard charger.
Nissan Blog - Charging Europe
I also got a brochure showing their AC / DC dual standard charger.
Nissan Blog - Charging Europe
dhrivnak
Active Member
14 Cracker Barrel restaurant/stores in Tennessee have installed the fast DC chargers and about another 20 have J-1772. It is nice to TN ahead of California in fast DC charging.
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