640Poststreet
New Member
I have a solar setup with a Growatt SPH 10000TL3 BH-UP Hybrid Inverter and 3 x 2,56 = 7,68 kWh ARK HV batteries, and I am planning to expand the battery capacity, initially to around 25 kWh. I am looking for a DIY solution, as these ARK HV batteries are fairly pricy.
In that connection I have some questions that I hope that some of you can help with answering:
1) It is said by Growatt and the vendor that only Growatt HV batteries do work with this inverter, due to the Growatt proprietary CAN protocol. To your knowledge, is it possible to buy BMS PCBs which have that protocol built in (so that I can build these packs of 16s 50ah blocks myself)? Or is it possible to code a BMS with that protocol?
2) Can someone explain what kind of communication that flows from the single 2,56 kWh battery packs to "upper controlling pack" in the stack, and further to the inverter? It is just to get a sense of the overall functionality and communication flow/directions.
3) Is it possible to make your own Growatt compatible 2,56 kWh HV block, alternatively somehow trigger the system to accept additional 2,56 kWh no name battery blocks?
4) Would it be possible to add a no name 3x16S LiFePO4 in parallel, either directly on the inverter or on the "upper controlling pack", ensuring that the two stacks have identical SOC? Would that work, apart from that the charging time will be extended?
Regards,
Jens
In that connection I have some questions that I hope that some of you can help with answering:
1) It is said by Growatt and the vendor that only Growatt HV batteries do work with this inverter, due to the Growatt proprietary CAN protocol. To your knowledge, is it possible to buy BMS PCBs which have that protocol built in (so that I can build these packs of 16s 50ah blocks myself)? Or is it possible to code a BMS with that protocol?
2) Can someone explain what kind of communication that flows from the single 2,56 kWh battery packs to "upper controlling pack" in the stack, and further to the inverter? It is just to get a sense of the overall functionality and communication flow/directions.
3) Is it possible to make your own Growatt compatible 2,56 kWh HV block, alternatively somehow trigger the system to accept additional 2,56 kWh no name battery blocks?
4) Would it be possible to add a no name 3x16S LiFePO4 in parallel, either directly on the inverter or on the "upper controlling pack", ensuring that the two stacks have identical SOC? Would that work, apart from that the charging time will be extended?
Regards,
Jens