search

jblance / mpp-solar

Python package to communicate to MPP Solar PIP-4048MS inverters (and similar)
MIT License
362 stars 150 forks source link

Feature Request - Daly BMS with Sinowealth chip #139

Open brendanjerwin opened 3 years ago

brendanjerwin commented 3 years ago

I seem to have "lucked out" and gotten a Daly BMS with a sinowealth chip. After struggling to get mpp-solar to work I searched around for another implementation to see if I had a hardware issue or not. I found this: https://github.com/dreadnought/python-daly-bms/issues/1 and that tool does work for me if I tell it to work in sinowealth mode. (So no hardware issue.)

My goal, though, is to get the readings into mqtt for home-assistant and mpp-solar is the best for that!

It'd be great if you could extend mpp-solar with yet-another-protocol for Daly...

hacksics commented 3 years ago

I think the reason this is not working is that your BMS for 12S or above battery pack. The Sinowealth feature assumes the battery pack is less than 10s.

""" List from BMStool PC / Sinowealth 1 = Cell 1 Voltage ... 09 = Cell 9 Voltage 0A = Cell 10 Voltage 0B = Total Voltage 0C = External Temperature 1 0D = External Temperature 2 0E = IC Temperature 1 0F = IC Temperature 2 10 = CADC Current (4 byte) 11 = Full Charge Capacity (4 byte) 12 = Remaining Capacity (4 byte) 13 = RSOC 14 = Cycle Count 15 = Pack Status 16 = Battery Status 17 = Pack Config 18 = Manufacture Access """

To help out, I increased the cell count to 16 and ran the command with more debug

$ daly-bms-cli -d /dev/cu.usbserial-1440 --sinowealth --cell-voltages --verbose DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x01\x02'), 0a0102 DEBUG [daly_sinowealth.py:91] 0e7dbf (3) DEBUG [daly_sinowealth.py:102] Response data for cell 1 is 3709 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x02\x02'), 0a0202 DEBUG [daly_sinowealth.py:91] 0e7d85 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 2 is 3709 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x03\x02'), 0a0302 DEBUG [daly_sinowealth.py:91] 0e7d93 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 3 is 3709 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x04\x02'), 0a0402 DEBUG [daly_sinowealth.py:91] 0e7ef8 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 4 is 3710 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x05\x02'), 0a0502 DEBUG [daly_sinowealth.py:91] 0e7fe9 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 5 is 3711 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x06\x02'), 0a0602 DEBUG [daly_sinowealth.py:91] 0e7ddd (3) DEBUG [daly_sinowealth.py:102] Response data for cell 6 is 3709 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x07\x02'), 0a0702 DEBUG [daly_sinowealth.py:91] 0e7ec2 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 7 is 3710 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x08\x02'), 0a0802 DEBUG [daly_sinowealth.py:91] 0e7d19 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 8 is 3709 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\t\x02'), 0a0902 DEBUG [daly_sinowealth.py:91] 0e80f2 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 9 is 3712 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\n\x02'), 0a0a02 DEBUG [daly_sinowealth.py:91] 0e7e3c (3) DEBUG [daly_sinowealth.py:102] Response data for cell 10 is 3710 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x0b\x02'), 0a0b02 DEBUG [daly_sinowealth.py:91] 0e7e2a (3) DEBUG [daly_sinowealth.py:102] Response data for cell 11 is 3710 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x0c\x02'), 0a0c02 DEBUG [daly_sinowealth.py:91] 0e80bc (3) DEBUG [daly_sinowealth.py:102] Response data for cell 12 is 3712 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\r\x02'), 0a0d02 DEBUG [daly_sinowealth.py:91] 0e7f59 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 13 is 3711 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x0e\x02'), 0a0e02 DEBUG [daly_sinowealth.py:91] 0e7f63 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 14 is 3711 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x0f\x02'), 0a0f02 DEBUG [daly_sinowealth.py:91] 0e7f75 (3) DEBUG [daly_sinowealth.py:102] Response data for cell 15 is 3711 DEBUG [daly_sinowealth.py:61] message: bytearray(b'\n\x10\x04'), 0a1004 DEBUG [daly_sinowealth.py:91] 0e7f0000a6 (5) DEBUG [daly_sinowealth.py:102] Response data for cell 16 is 243204096

It looks like 0B is cell voltage of 11th cell now.

hacksics commented 3 years ago

Also I connected the BMS Tool v0.2 with the BMS to see tool only supports reading up to 10 cells. Even there total voltage is also wrong.

hacksics commented 3 years ago

btsnoop_hci.log

Here is the bluetooth snoop file I generated since bluetooth application seems to show all information accurately. I don't know how to read this.