Electrical

Our final electrical Power Distribution System design is available here: Electrical System

Completed PCB

Wiring Diagram

Schematic Circuit Diagrams

PCB Layout

Final Design

Datasheets

Our datasheet is is available here: Datasheet

Some important data is shown below:

Bill of Materials

The bill of materials (including spares) for the PDB is shown below:

Mounting Method

The board contains 4 M3 mounting holes at the corners. On our rover, we have designed an electronic box with custom mounting holes matching the board. Once the PDB design is finalized, the placeholder (blue part on the bottom face) will be replaced, and holes will be made accordingly. All power outputs from the PCB will be connected to components inside the box. The input comes from the batteries mounted behind the box.

Design Considerations

Power Source:

Battery: 3x Vanon Power Tools Batteries
Nominal Voltage: 20V
Nominal Capacity: 5.0Ah
Energy: 100Wh
Chemistry: Li-ion
Cell Configuration: 5s2p
Number of Cells: 10
Monitoring: Using Turnigy® Watt Meter and Power Analyzer (180A).

Specifications:

Operating Voltage Range: 4.6~60 V
Measured Voltage Range: 0~60 V
Current Range: 0~180 A

Overvoltage Protection:

Primary: 30 A Blade Fuse (each)
Secondary: Push Button Emergency Stop

Board Design

To accommodate the high current requirements for the circuit, we shifted to two different inputs. This
allows us to create 2 independent circuits with a common ground.

Trace Width Calculation Parameters: