EV-Charger only using grid in ESS

Q&A and troubleshooting
, ,
1

Hello everyone,

I’m working on an upgrade for a client’s Energy Storage System (ESS) which currently features a Victron Quattro 48/8000 and an AC-Coupled Fronius PV inverter (read via IP).

The client currently charges their EV using a standard Schuko socket but is planning to install a dedicated Victron EV Charging Station.

My core question is: Is it technically possible to configure the system to charge the EV only using current drawn from the Grid, and route this power directly to the EV Charging Station connected to AC OUT 2?

The main objective is to preserve the home’s battery state of charge (SoC) by ensuring that the EV charging load is supplied exclusively by the grid, while the battery continues to support the essential household loads connected to AC OUT 1.

I believe this should be achievable with the appropriate EV Charging Station and ESS configuration.

Has anyone implemented a similar setup, or can you confirm if the Quattro’s AC OUT 2 capabilities (which is a non-essential output that disconnects when the grid is lost) can be utilized this way to restrict the charging source?

Thank you for your insights!

2

Yes, you need to put the ev charger on AC-IN, use an external gridmeter and set self-consumption from battery to only critical loads.

image
image1505×394 36 KB

3

ok thanks, but would that work even if I have my entire house powered from AC OUT? I do have a ET340 ready to be used…if I set its L1 to read something that would be great, right?

4

If you put the charger on AC-IN you have a choice how to charge the car. self-consumption on all loads —> charge the ev from the battery, self-consumption on only critical loads → charge the ev from the grid.

1 Like