search

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
1.09k stars 150 forks source link

Temperature derating #187

Open Cabooman opened 9 months ago

Cabooman commented 9 months ago

It would be nice to limit charge/discharge power based on the battery temperature, e.g. ramping the power from the stated BMS power capacity at 40 degrees C to 0 W at 50 degrees C. Similarly at low temperature, ramp from BMS max power at -10 and 0 W at -20

Tosood commented 8 months ago

I have a similar wish regarding the temperature rating or reduced power related to temperatures below 20 degC. Using Goodwe 30 kW inverter with simulated 2*BYD HVM batteries. Ideal would be if the temperature could be "translated" to 21 degC when in the range of -10 to 19,9 degC ? This would allow us to run full power when needed. Without having to heat the batteries at all times.

havrla commented 3 weeks ago

How do you use batteries? Battery management I3 continuously regulates the recommended charge and discharge value. Keep in mind that at -10 celsius you cannot fully power charging, the battery will be destroyed. As for regulation according to temperature - this is determined by battery management. So your request is duplicated and actually unnecessary. Only the battery management inside the battery has the correct values ​​for setting the limit.