question

As far as I know the only section where you can define timer functions is in the Venus device at the Generator Start/Stop function. You could control the relais according time and SOC and use the Relais output as Aux input. Eventually it would be then possible to override the Active SOC limit of the ESS with an Assistant triggered by the input. But I dought that? Eventually it would work with external logic via modbus.

P. S. I would like to have such a functionality too, I live in France too. But I would change your proposed logic a bit. Economically it makes sense to discharge the battery at night, but it also makes sense to use the cheaper power at night to charge the battery for what we need in the morning hours until the sun delivers enough juice into the PV.

So it makes sense to have a parameter to increase the Active SOC limit with the equivalent amount of power that I consume in the morning hours. Let's say my Active SOC limit is at 50% due to cloudy weather in the last days. Then I normally consume about 30% of my battery capacity in the morning and my Increase SOC parameter is 30%. The system than should charge the batteries to 80% (50+30) until 7 AM. Then I consume only what I need from the Grid.

For optimize my system with HC/HP, i have create a pyhon script who manage schedule charge with batterylife optimized

- create shechule charge from 23h to 7h

- implement script

First part : estimate soc needed at morning for don't use HP.

- At 7h script take power counter ( ACOut, PVYield)

- At sunset + 2h take power counter ( ACOut, PVYield)

- Make delta power counter for know soc is needed ( setting capacity battary)

- Set soc in schedule chage ( soc need + blminsoc)

- Disable schedule charge

Second part : active schedule charge only if soc is less than value in shedule charge

- if soc <= soccharge, enable schedule charge (for block discharge)

2 situations

- soc become less soc schedule before 23h, shedule become enable and the battery will be charge during HC

- soc become less soc schedule between 23h-7h, schedule become enable and keep battery for the morning.

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Apparemment les HC ne seraient plus le 'Pérou'

https://www-capital-fr.cdn.ampproject.org/c/s/www.capital.fr/votre-argent/edf-les-heures-creuses-vraiment-rentables-faites-le-test-1387529?amp

Basiquement le mode battery life est déjà 1 bonne approche pour gérer le SOC https://www.victronenergy.com/media/pg/Energy_Storage_System/fr/controlling-depth-of-discharge.html#UUID-af4a7478-4b75-68ac-cf3c-16c381335d1e préserver et équilibrer les accus.