BFD Battery Heating System V2

Overview

Controller - Mounting location can be wherever is convenient. This is the hub of the system that the pad is connected to. It has a 50v to 5v dc converter with a max rating of 100 mA. An ATmega4809 chip running Arduino is used to control the temperature of the Pad. The Controller should be powered through the xt30 connector off of the flight batteries.

Input Voltage: 50v

Power Draw: 50W (when heating)

Pad - The heating component that the flight batteries are mounted to. There are two temperature sensors on the bottom of the board to monitor the temperature and avoid overheating the batteries. When the Pad is turned on and heating the orange LED indicator will be on. It runs off 50v from the Controller and draws 1 amp, or about 50W of heating. It is connected to the Controller by a 10 pin JST-GH.

Controller Connections

For customer use, the Program connector does not need to be plugged in as it is only used for initially programming the board.

The pad will begin to heat up based on the readings from the temperature sensors located on the pad. The controller will keep the pad at around 40 degrees C by cycling on and off whenever it is powered. The batteries themselves won’t reach 40 degrees C but will instead stay around room temperature while in use.