Example of achievement
Taken as a hit – load 2 USB 3A sockets Displays Regulator view 2 USB sockets Battery charge state Viewer information
List of coins
Battery charge indicator Battery Spring Plate X2 USB 3A socket Thermostatic Temperature Sensor SCHOTTKY-BARRIER-Diode Step Down Power Supply Module Multifunction display 18650 SAMSUNG (18 batteries) BMS 6S Thermo sheath Fan 12 V Connector GX12 2pin (X 2) Switch on/off (led red) Take DC charge Battery charger 18650 25.2 V
List of 3D files
beep Side Fan block Battery block BMS regulator block Reinforcement Download
Testing the 18650 batteries
To build the cells of this diet for outdoor astrophotography setups, we sort the 18650 batteries. (the planned assembly is 6 sets of 3 batteries in parallel: 6S3P). As a reminder when you make up the cells (several batteries mounted in parallel) they must be similar, because it is the one with the lowest performance…
Next project
Another power supply for outdoor astrophotography. Less battery life and less power but it’s lighter and more optimized. Twelve 18650 batteries are managed by a BMS with active balance, to maximize battery life. The components have been kept to a minimum.
BMS wiring
For information, I used isolated plugs, to be able to easily separate the BLOCK BMS from the battery packs, but this is not mandatory. The only focus of this step is at the switch. Indeed in order to simplify the power as much as possible, this one is at 3 positions, the closed circuit is…
Wiring Blocks Batteries
The next step is wiring the battery packs. We will link the three 18650s in each case, connecting the 3 negative terminals, then the 3 positive terminals together each battery block, will form a cell. Each negative terminal of one cell will then be connected to the positive terminal of the next. On the first…
Block BMS / Stepdown Regulator
Construction today of the BMS block. Let’s start with a time laspe 8 hours 30 3D print summarized in just over 6 minutes of video … Previous next Adjusting the control stepdown. Two adjustments are possible, the voltage and the maximum intensity delivered. First of all, we will only adjust the voltage. Sense of knob…
Fan block
A fan and temperature sensor set will ensure thermal regulation of the power supply. The fan is contained in a block placed at the base.