[fronius] add battery SOC

[chr1337]

Thank you a lot for your great work!

It would really be great to read from solar_api/v1/GetStorageRealtimeData.cgi
What I'm missing in the current binding is the battery status. (Especially the SOC (StateOfCharge_Relative)). This ist the output of my gen24:

{
"Body" : {
"Data" : {
"0" : {
"Controller" : {
"Capacity_Maximum" : 7800,
"Current_DC" : 0.79987550575785871,
"DesignedCapacity" : 7800,
"Details" : {
"Manufacturer" : "BYD",
"Model" : "BYD Battery-Box Premium HV",
"Serial" : "P030T020Z200XXXXXXX "
},
"Enable" : 1,
"StateOfCharge_Relative" : 65.900000000000006,
"Status_BatteryCell" : 3.0,
"Temperature_Cell" : 16.0,
"TimeStamp" : 1650606867.0,
"Voltage_DC" : 321.30000000000001
},
"Modules" : []
}
}
},
"Head" : {
"RequestArguments" : {
"Scope" : "System"
},
"Status" : {
"Code" : 0,
"Reason" : "",
"UserMessage" : ""
},
"Timestamp" : "2022-04-22T05:54:31+00:00"
}
}

[jimtng]

Is this different to the SOC data from the inverter channel powerflowinverter1soc ?

[jimtng]

Is this different to the SOC data from the inverter channel powerflowinverter1soc ?

@chr1337 can you provide feedback please?

[Trancep0rt]

powerflowinverter1soc has the same value as StateOfCharge_Relative from the API.
Temperature_Cell would be nice to have, too.

[sberer]

Any feedback on this? I also want to use SOC and temperature of the battery.

[staeglis]

I would also be very interested in this feature.

[odlg]

I see the same value in the existing powerflowinvertersoc and StateOfCharge_Relative from /solar_api/v1/GetStorageRealtimeData.cgi
I would like to have access to Temperature_Cell and Voltage_DC which are not currently accessible in OpenHab.

[jimtng]

@chr1337 @Trancep0rt @sberer @staeglis @odlg would you be able to help me test this feature? I don't have a battery so I can't test it.

[staeglis]

Sure. Is there a test build already?

[odlg]

@jimtng I do have a battery connected to my Fronius. I can also test it.