This is the first release candidate RC1 of my open source arduino BMS cell balancing pcb for LiIon and LiFePo4 battery cells.
Cell balancing pcb’s are connected in parallel to the arduino BMS controller shield (comming soon, check out my Danish version of this site to follow the developing process, first 09beta version running now)
Functions in RC1 cell balancing PCB:
- Detects Vlow (ca. 2,85 volt) and opto coupler patch info to the arduino based BMS controller
- Detects Vhighhigh (4,2 volt) and opto coupler patch info to the arduino BMS controller
- Balancing the cell at Vhigh with a load resistor, switched on with a Darlington transistor
This cell module can be used for electric vehicles with LiFePo4 batteris, just by changing some configuration in the arduino sketch, and a few components on the arduino BMS controller shield.