Automatic, smart battery charger? , part 2
This is a continuation/update of a now two year old post.
Thanks to the Raspberry Pi 3b, I have detailed logs per minute of information. Now I have a lengthy menu of graphs to review. This menu of graphs replaces the functionality of a remote meter. I iswireless as well.
Lets review this morning.
The first thing in the morning, I want to see how things went overnight. Here is the graph for this morning.
My conclusion is that the system is working well and therefor there were no problems that need to be addressed. This took about 3 minutes for me to view on my mobile device. I am done for today.
Why?
1. The blue line(V_Batt) shows the bank began the night in excess of 13V. As you can see, the blue line starts off the top of the graph. This is systems normal and the bank ended well charged yesterday.
2. The blue line stayed above the green line(2 Hrs). This means the charging time for Absorption is set to one(1) hour. The downward spikes are the ICECO 12V fridge cycling. If the fridge were not running, the ending Volts likely would have been above 12.8V. This is the seen as Volts at the top of the blue line between fridge cycles. There is a static 3A draw for misc electronics.
3. If the bank volts had dipped below the green line, the ABS time would have been set to 2 hours.
4. If the bank Volts had dipped below the yellow line(~ ABS, the float would have been cancelled and the ABS would run until sunset.
The green and yellow line's Voltage settings are the main triggers that allow catch-up if the bank had been used heavily enough beforehand to pull the low Volts down. These values were determined through extensive testing and analysis of finishing Amps between APR 2017 and JAN 2018.
HTH;
John
Thanks to the Raspberry Pi 3b, I have detailed logs per minute of information. Now I have a lengthy menu of graphs to review. This menu of graphs replaces the functionality of a remote meter. I iswireless as well.
Lets review this morning.
The first thing in the morning, I want to see how things went overnight. Here is the graph for this morning.
My conclusion is that the system is working well and therefor there were no problems that need to be addressed. This took about 3 minutes for me to view on my mobile device. I am done for today.
Why?
1. The blue line(V_Batt) shows the bank began the night in excess of 13V. As you can see, the blue line starts off the top of the graph. This is systems normal and the bank ended well charged yesterday.
2. The blue line stayed above the green line(2 Hrs). This means the charging time for Absorption is set to one(1) hour. The downward spikes are the ICECO 12V fridge cycling. If the fridge were not running, the ending Volts likely would have been above 12.8V. This is the seen as Volts at the top of the blue line between fridge cycles. There is a static 3A draw for misc electronics.
3. If the bank volts had dipped below the green line, the ABS time would have been set to 2 hours.
4. If the bank Volts had dipped below the yellow line(~ ABS, the float would have been cancelled and the ABS would run until sunset.
The green and yellow line's Voltage settings are the main triggers that allow catch-up if the bank had been used heavily enough beforehand to pull the low Volts down. These values were determined through extensive testing and analysis of finishing Amps between APR 2017 and JAN 2018.
HTH;
John
