Overview
We'd like to minimize the number of different connectors and components that exist in the car. It's terrible for inventory management and means we have a lot of board-specific parts and crimping.
Components
Taiping Liand Calder Kitagawa will fill this part out, describing the common components and sizes that they have identified and why.
Connectors
All of our connectors must be positive-locking and able to withstand high-vibration environments, ideally shrouded. Anything outside of an enclosure should be sealed and locking with strain relief.
So far, we have identified the following use cases for connectors in MSXII:
| Type | Scenario | Expected Voltage | Expected Current | Number of Circuits |
|---|---|---|---|---|
| Wire-to-board | Connecting signal wires between boards or panel mounts within an enclosure (ex. CAN, BMS) | 3.3v | <1A | 2~16+ |
| Wire-to-board | Supplying power to boards or relays | 12v | <1A (3.2A peak) | 2 |
| Wire-to-board | Supplying power from Chaos to other systems | 12v | 2A (6A bursts if for horn) | 2 |
| Wire-to-board | Supplying power from the DC-DC or aux battery to Chaos | 12v | 10A? | 2 |
| Wire-to-board | HV measurement for precharge | 150v | <1A | 2 |
| Panel-to-panel | CAN, power, and auxiliary signal (ex. killswitch or MPPT enable) between enclosures | 12v | 2A (6A bursts if for horn) | 6+ |
| Panel-to-panel | HV power | 150v | 150A | 2 |
Currently, we have identified the following connectors as possible candidates:
| Connector | Purpose | Max. Rated Voltage | Max. Rated Current |
|---|---|---|---|
| Molex Clik-Mate | Wire-to-board: 1.25mm for signal and 1.50mm for power | 1.25mm: 50V 1.50mm: 100V | 1.25mm: 1A 1.50mm: 2A (3A with 2 circuits) |
| Anderson SB120 | HV power - note that this does not follow any of the rules | high | 240A |
| Hirose DF3 | Alternative to Clik-Mate (2mm pitch 2 circuit variant available) | 250V AC? | 3A |
| M12-5 (DeviceNet) | CAN and power | 300V? | 4A (power) |
| TE Deutsch | CAN, power, aux signal |