Hello all, I am French, and ordered a model S some week ago (standard 85kWh).
Here in Europe the charging standard for DC is CHAdeMO, and for now the Tesla is not compatible until they release an adapter, and it will be expensive probably.
It's why I am searching a way to develop one.
CHAdeMO interfacing side is easy, everything is well explained on the CHAdeMO website. Now I just need to find the CAN bus protocol used for data exchange between the DC supply and the car, but I will have it soon because I am going to buy the specification.
Thus to build the electronic interface, now I need to know the protocol used between the model S and supercharger, to be able to simulate it on the electronic interface of the CHAdeMO adapter cable.
And I really don't know how the Tesla detect the supercharger and bypass the internal charger, and how it sends the current consign to the supercharger, because in Europe the charge port will be a Mennekes type 2 connector, and it just have 2 signals pin, the proximity pin and the control signal pin, same signal than the SAE J1772 standard :
Thus actually I don't know how they will be able to detect the Tesla is connected to a supercharger and directly connect the battery pack to the charge port to do a DC charge.
Maybe the supercharger will send a PWM with a different frequency value than the habitual 1000Hz ? In this case it's easy for the Tesla to detect it is connected to a supercharger, but how it will send the current consign to the supercharger ? Or maybe the Tesla will not be able to do that and the supercharger will always send its full current, thus only the constant current phase of a charge will be possible in a supercharger, and not the constant voltage phase ?
If anyone has some idea or information it will be great, have a good day !
Here in Europe the charging standard for DC is CHAdeMO, and for now the Tesla is not compatible until they release an adapter, and it will be expensive probably.
It's why I am searching a way to develop one.
CHAdeMO interfacing side is easy, everything is well explained on the CHAdeMO website. Now I just need to find the CAN bus protocol used for data exchange between the DC supply and the car, but I will have it soon because I am going to buy the specification.
Thus to build the electronic interface, now I need to know the protocol used between the model S and supercharger, to be able to simulate it on the electronic interface of the CHAdeMO adapter cable.
And I really don't know how the Tesla detect the supercharger and bypass the internal charger, and how it sends the current consign to the supercharger, because in Europe the charge port will be a Mennekes type 2 connector, and it just have 2 signals pin, the proximity pin and the control signal pin, same signal than the SAE J1772 standard :
Thus actually I don't know how they will be able to detect the Tesla is connected to a supercharger and directly connect the battery pack to the charge port to do a DC charge.
Maybe the supercharger will send a PWM with a different frequency value than the habitual 1000Hz ? In this case it's easy for the Tesla to detect it is connected to a supercharger, but how it will send the current consign to the supercharger ? Or maybe the Tesla will not be able to do that and the supercharger will always send its full current, thus only the constant current phase of a charge will be possible in a supercharger, and not the constant voltage phase ?
If anyone has some idea or information it will be great, have a good day !