Is there a SOC Meter with CAN communication for a fully built 48V Battery pack

stirucherai

New Member
Joined
Mar 9, 2021
Messages
7
Hi,

Planning to have GoodWe Hybrid Inverter and this requires approved battery pack (which is not available in India) or provide them with BMS integration. All the LFP packs we get in India are fully built with internal BMS and only +ve and -ve terminal exposed. So is there SOC Meter which i can connect to just +ve and -ve terminal and provide a CAN communication to the Inverter.

Saw AILI SOC meter and others but all provides bluetooth and probably wifi connection to mobile App.

Thanks and Regards
Sarang
 
Last edited:

drbytes

New Member
Joined
Oct 21, 2021
Messages
23
Actually, does it matter? The bms will take a charge or it won't
 
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stirucherai

New Member
Joined
Mar 9, 2021
Messages
7
Well after some work here is the status

BMS is from yybms (Chinese) based and support Bluetooth (BLE). It does work on request response mode. Found the request to get the SOC, Voltage, Temp, Current etc and also found the logic to decode the response.

Using raspberryPi Zero W (1st version 10 USD) -- got it working by polling every 3 seconds python code. Added a output TFT screen and get the SOC, Voltage and Current from the battery. Well also write to google spread sheet as well so i can check the status from remote location

This is working

Got Waveshare RS485/CAN HAT -- got the code push CAN messages as per GOODWe based CAN protocol. This is yet to connected to the GoodWe inverter to test
 

houseofancients

Solar Addict
Joined
Nov 29, 2019
Messages
638
Well after some work here is the status

BMS is from yybms (Chinese) based and support Bluetooth (BLE). It does work on request response mode. Found the request to get the SOC, Voltage, Temp, Current etc and also found the logic to decode the response.

Using raspberryPi Zero W (1st version 10 USD) -- got it working by polling every 3 seconds python code. Added a output TFT screen and get the SOC, Voltage and Current from the battery. Well also write to google spread sheet as well so i can check the status from remote location

This is working

Got Waveshare RS485/CAN HAT -- got the code push CAN messages as per GOODWe based CAN protocol. This is yet to connected to the GoodWe inverter to test
would you mind putting the code on github ?
ben interesting to see how you got this working
 
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