I'm trying to explain my issue.
My operating mode is permanently set to Scheduled.
I have configured four time periods:
00:00 – 08:00
Minimum SoC: 20%
Maximum SoC: 100%
08:01 – 15:00
Minimum SoC: 50%
Maximum SoC: 100%
15:01 – 18:00
Minimum SoC: 90%
Maximum SoC: 100%
18:01 – 23:59
Minimum SoC: 20%
Maximum SoC: 100%
Under Quick Settings → Battery Control, I currently have the following values configured:
Battery SoC: 75% (Min) – 100% (Max)
Off-Grid Minimum SoC: 20%
Now let me explain why I configured it this way and what my question is.
My goal is to charge the battery during the day, roughly between 08:00 and 18:00. However, whenever my EV is charging at the same time, the system always drains the battery down to 20%, even when the EV is charging in surplus charging mode.
To prevent this, I increased the scheduled Minimum SoC to 50% during the day and to 90% from 15:00 onwards, so that enough battery capacity is reserved for the evening.
However, I have now noticed that it doesn't seem to matter what values I configure for the individual scheduled time periods. The system always follows the Battery Control settings instead.
For example:
If I set 20%–100% in Battery Control, the battery is discharged down to 20% at any time of the day.
If I set 75%–100%, the battery is never discharged below 75%, regardless of the scheduled periods.
The second option is not what I want because during the night I actually want the battery to be allowed to discharge down to 20%.
Am I really expected to manually change the Battery Control settings several times a day depending on the time? Or am I misunderstanding how the Scheduled mode is supposed to work?
I hope I explained my issue clearly enough.
I think what you really need to fix is the EV discharging the battery, as this is bad.
Ideally your system needs to be 'blind' to the EVCP, so that the Inverter does not allow the battery to discharge.
Process this, then if you need it explained in more detail, it can be provided.
Are you by any chance from Germany?
If you know how I can charge my car without it drawing power from the battery, I'd really appreciate it if you could tell me what settings I need to change and where to find them.
Thank you
If you know how I can charge my car without it drawing power from the battery, I'd really appreciate it if you could tell me what settings I need to change and where to find them.
Thank you
Sorry not from Germany.
How is your EVCP wired up, is it coming from meter area or does it come off a CU (Consumer Unit) with fuses?
If you are able to post pictures/write any more details that you think can help, then ideas will come.
How is your EVCP wired up, is it coming from meter area or does it come off a CU (Consumer Unit) with fuses?
If you are able to post pictures/write any more details that you think can help, then ideas will come.
My wallbox is, of course, connected through its own circuit breaker.
In addition, the wallbox is connected to the Dual Multimeter via a network cable using two wires, connected to the RS485 port.
My inverter is also connected to the second RS485B port on the Dual Multimeter using its own separate network cable.
The Dual Multimeter then controls how much power comes from each source and where it should be routed.
In addition, the wallbox is connected to the Dual Multimeter via a network cable using two wires, connected to the RS485 port.
My inverter is also connected to the second RS485B port on the Dual Multimeter using its own separate network cable.
The Dual Multimeter then controls how much power comes from each source and where it should be routed.
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