SOC-based charging and discharging control

[studiowena]

Hi,

As we know, it is best to use batteries in the flat range of 80-20%. It would be great if we could set when REBULK loading should resume based on SOC %. Likewise, we can set it to charge up to 80% SOC. V-base alignment is imprecise

[Sleeper85]

Hi,

The SoC of bms is not more precise than the voltage. It could be an idea if the soc calculation comes from a shunt.

[studiowena]

If, for example, we have a discharge cutoff at V and a stronger momentary load comes, the battery will be disconnected even though there is still, for example, 40% SOC. That's why I'm wondering how to control it conveniently. Of course, we have HA and automation, but it would be better if the Inverter did it

[MrPabloUK]

The CAN Automatic Discharge Current switch will handle this situation.
As the minimum cell voltage approaches cut-off value (as set in the BMS), maximum discharge current is reduced.

This should prevent momentary high load from causing sufficient voltage sag to trip 0% SOC and battery disconnect.