All the charging setups I am aware of use AC input power.
The j1772 input voltage is something like 100 to 130vac for low power then 220 to 250vac for the high voltage.
Chademo sends pack voltage out to the vehicle. The lowest voltage chadomo I have seen uses 240v single phase, most use 480v 3 phase.
In theory if you had unlimited budget you could get a chademo that takes DC input and steps it up, but if your voltage is say 48vdc I imagine that the conversation inefficiencys would be fairly horrific. If you tied into say a 400 to 1,000v array the conversation would be pretty good.
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