Some info that might be of interest:
- the AC-charger which is on board our PHEV can only process a max. of 3.3kW which is 14.4Amps at 230Volts
- the power source (public point, wallbox or ICCB) limits the current, it is done by communicating to the onboard charger. This com-signal does
requests/asks the onboard charger to limit the current he draws from 1 Amp to 64 Amps,
depending on the max. capability of the source.
- the link between the source and the onboard charger is the Typ1-Typ2 cable, which of course also has it's specific limits and therefor also needs to communicate his specs to the rest of the chain. That why the cable is "coded" to identify itself as a (for example) 12 Amp, 20 Amp, 32 Amp, etc..... cable. That code is via a resistor in the plugs.
- there might still be some charging points out there with the following (software)-problem:
Some 22Kw outlets were known to neglect any cables coded to less than 32 Amps, regardless even if the charger only would have needed 3kW (13 Amps).
So you needed a 32 Amp cable just to make the source willing to provide any current for your 14.4 Amps car.
I had (and still have in use) a 16 Amp cable that I
recoded to a 32 Amp cable to get around that problem.
I just can never sell it to someone else who might accidently use it on a 32 Amp car...(that would melt the cable)
So:
AC charging: the converter, charger and most of the intelligence is
in our car. This is why AC charging points are cheap, cause they are only a power source (with a relais, a little com-software and a fancy plug).
DC charging: the converter, charger and most of the intelligence is
in the external charging station. These charging stations can cost from 10.000 up to 100.000 USD (CHAdeMo, CCS, Tesla Supercharger)