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dalathegreat / Battery-Emulator

This software enables EV battery packs to be used for stationary storage in combination with solar inverters.
GNU General Public License v3.0
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Battery Charging Question #415

Closed Protoneer closed 1 month ago

Protoneer commented 2 months ago

I was just looking at how the LEAF batteries as connected to the Solar panel port on inverters (Fronius).

How does the charging of the batty work in this case?

Also I take it the solar panels are not connected in this setup?

Protoneer commented 2 months ago

I just noticed that the battery have their own pins...

image

Alizainharoon commented 2 months ago

On this page there is an explanation of how to install and configure https://github.com/dalathegreat/Battery-Emulator/wiki/Fronius-inverters

Protoneer commented 2 months ago

I look on the Fronius wiki page but it was not clear at what voltage the battery gets charged.

Is this voltage communicated via the can bus from the battery to the inverter?

dalathegreat commented 2 months ago

@Protoneer SOC% is used to control stopping of charge in low / high state. Voltage is not used, that is only used as a safety, incase the pack would go out of bounds.

Protoneer commented 2 months ago

Had a good dig into the code and I understand it a bit better...

Battery configuration is sent to the inverter... this includes the cell count , min/max cell voltage and from that the inverter can calculate the charging settings.

Leaf battery set charging voltage at 400v