question

mickyfuncky avatar image
mickyfuncky asked

How to use solar for car loading or heat pump, but not the batterie ?

Hi i'm planning a three-phase installation (3xMultiplus-ll 5000) with Pylontech batterie at home. How ist it possible to use the solar combine with grid for heavy equipement like e-car or heat pump and use the batterie only for home usage.

The AC output 1 is for the Home usage witch backup or use from Solar energy at night, right ? No havy load of course.

The AC output 2 ist for thoses havy load, it has no backup fonction and work on AC in = grid. But did it also use prior the energy from solar vor the AC in ?

Thanks

Multiplus-II
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1 Answer
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matt1309 answered ·

I'm not aware of a native function for this but you could use node red with three inputs being:

ev car charger usage, Heat pump usages, solar production.


And then you'd adjust your grid setpoint to be below formula.

max(car Usage + heat pump usage - solar production,0)

Need the max function in the even that car usage + heat pump = 0 or if the solar is producing much more than heatpump and car usage.


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