Hi to all,
I’m trying to find a working solution to this problem. I have solar panels connected to a LiFePO4 battery using an Orion BMSjr with a relay used to connect the panels to the battery. My intention was to have the charging commence as soon as there is light to begin charging. The BMS senses voltage (about 9v) on one pin and switches another pin to activate the relay thus allowing charging, when charging is complete the BMS deactivates the relay circuit and stops the process. The problem is: the solar panels generate enough voltage that BMS senses it and turns on the relay but in low light the panels don’t make enough current to hold the voltage and the BMS drops the relay and a rapid oscillating occurs. I need to find a way to hold out the BMS signal until the panels are really ready to send at least a few amps to the cells
I’m trying to find a working solution to this problem. I have solar panels connected to a LiFePO4 battery using an Orion BMSjr with a relay used to connect the panels to the battery. My intention was to have the charging commence as soon as there is light to begin charging. The BMS senses voltage (about 9v) on one pin and switches another pin to activate the relay thus allowing charging, when charging is complete the BMS deactivates the relay circuit and stops the process. The problem is: the solar panels generate enough voltage that BMS senses it and turns on the relay but in low light the panels don’t make enough current to hold the voltage and the BMS drops the relay and a rapid oscillating occurs. I need to find a way to hold out the BMS signal until the panels are really ready to send at least a few amps to the cells