Have a Tesla which I’m charging with Easee 11 kW (with load balancing on a 20A circuit). Easee just introduced something they call “Solar Charging” which is basically a setting that charges the car on either 1 or 3-phase when all phases have a minimum of 6A or 1.4 kW exporting to “grid”. That would work super good if I didn’t have a BYD battery in the mix as well…
Problem I’m facing is that Easee doesn’t recognize if the “exported power to the grid” comes from the battery or not. I want to make this smarter with HA.
In a perfect setup, the car would only charge from the solar panels and not the BYD battery, and when there’s a least 5A available from the solar panels, then cut the export to the BYD battery (in other words, the car would have priority over the BYD battery). I played around a bit with HA, and I notice that when I connect my Fronius I can see the exact output from a separate phase. Perfect! That would also mean I could tell Easee to charge when it actually sends (X)A to the grid, and not my BYD battery, right?
I’m asking because I would like to retain my BYD battery and not charge my car with another battery - only power from the solar panels. Since Easee doesn’t recognize if the “exported power to grid” comes from the battery or not my situation right now is that I manually have to edit how many A the Tesla charges with to retain as much self consumption as possible, without taking power from the battery.
Let’s say it’s a cloudy day and the solar panels charges the BYD battery because there’s not enough power to serve the Tesla, and then during the afternoon it suddenly becomes available - then Easee will think “aha, I now have more than 5A” and start taking excessive power from the battery and not the actual power to the grid. That’s not how I want it since it puts unnecessary cycles on the BYD battery.
I hope my question isn’t too messy… Does anyone know how to achieve this?