welcome to the community. The datasheet is clearer about the supported communication protocols:
Both are two different protocols. While we (as OpenEMS Association e.V.) are in good contact with the “EEBus Initiative e. V.” no any protocol implementation has been started yet. From what I know about EEBus the cleanest and most straight-forward solution would be to build this based on the KEO Solution Set. But that might not be feasible as an individual because of the price tag. Direct integration of the EEBus protocol in OpenEMS will most likeliy not be trivial.
I am curious to know which solution you had in mind.
OpenEMS already supports OCPP out of the box and we use it in production with a IES Keywatt DC Charger (source code). Unfortunately the OCPP standard still leaves a lot of freedom for the implementation, so it is also usually not an out-of-the-box experience to implement an OCPP charger - but at least there is already good support in OpenEMS and an implementation example. (There is also the ABL implementation, but we do not use it in production because of some implemenation weeknesses in the ABL charging station)
Of course we are interested in the Bosch BPT-S Hybrid implementation. This would be a nice addition to the existing storage systems by Tesla, Fenecon, SMA and others. If you start a pull-request I’ll be glad to have a look and review your code.