Here’s what the power management board does.
Functionalities
Check the status of AUX Battery
Voltage
Temperature
Check the status of DCDC
Questions
Question | Answer |
|---|---|
How do we access aux battery voltage and temperature? | Analog Inputs, voltage (voltage divider fed into buffer then controller) |
How do we find the status of DCDC? | Analog sensors (same as AUX) |
Do we have any protection for the AUX battery? | No built in protection on the board. Software fault can be made. Want to detect: over voltage (would like to discharge the AUX battery without having to remove battery) , under voltage (use time delay to check for under voltage dips), over current (current is analog input) Don’t necessarily need to cut power immediately with power spikes. |
Do we charge the Aux battery? | Would like to, but not a priority. (so no). |
What’s the valid range of the AUX battery voltage and temperature? | Using a 10s NiMH battery Voltage 9.4 V - 15 V Temperature Charge - 0 to 45 degrees C Discharge - -20 to 50 degrees C  |
Hardware Person
Josh & Micah Black
AUX Battery / DCDC Status
Either send the status when asked or
Constantly broadcast the status
How it works
3 inputs (select which one to take power from):
1.Aux battery
2. DCDC (which is connected to main battery)
3. Power Supply
Monitors all the limits
Voltage, temperature, current for all the inputs (power supply does not have temp limit)
Tells us if all the inputs are working.