BYD Battery Box Integration

redpomodoro · December 24, 2024, 11:22am

I’ve started an integration which pulls in data from BYD Battery Box via modes directly:

It is still at very early stage and possibly a lot more data could be pulled, but these might not be very useful for home automation or general monitoring of the battery health.

redpomodoro · December 31, 2024, 10:08pm

Released a new version, which adds devices for each BMS. Also cell data is returned.

redpomodoro · January 4, 2025, 12:56pm

Released v0.1.4, changes:

Added diagnostic sensors with number of cells and number of temperature sensors per module
Updated data structure for individual cell voltages and temperatures

v0.1.3 changes:

Returning individual cell temperatures for all modules
Average termperature sensor with attribute with individual values of each sensor
Improved modbus connection handling

redpomodoro · February 10, 2025, 9:57am

Released v0.16.

New features:

Added support for log data. The log data will be cached in the local folder and also written as csv file for easier further analysis.
Added balancing count by cell, this is based on the log entries.
Switched to async modbus access to reduce system load.

Fixes:

Fixed cell balancing indicator.