EV Management System
Contactor control, precharging and BMS MCU in one
5+: AU$265 (each)
Availability: Order Now
As used by vehicles built for the WA Electric Vehicle Trial and now available to the public, this device ties together several common functions needed by EVs including:
BMS master unit: Monitors your BMS daisy chain (one-wire compatible), providing visible and audible warning when a cell goes out of range, and automatically stopping the charger or drive system (after a delay) if the error persists.
Staged precharging: Handles precharging (soft-start) required by most motor controllers. Includes error detection for precharge timeout (e.g in case of controller failure or wiring fault).
Contactor control: Automatic handling of auxillary contactor(s), which need to be engaged when either driving or charging (but open other times to prevent quiescent battery discharge).
Charge/drive interlock: Prevents the vehicle from being driven while it's plugged in to charge.
Status light and buzzer: A multicolour LED indicates the vehicle status (idle/precharging/ready/charging/BMS error/etc), and a buzzer gives an audible warning on errors.
Specifications in brief:
Power supply: 9-16VDC
Suitable for traction packs: 12-160VDC
Casing: Fully enclosed die cast aluminium, weatherproof to IP65
Internally fused @ 5A plus reverse voltage and over-voltage protected
LRC filtered inputs and buffered outputs for high noise immunity
A great device to improve the safety, reliability and maintainability of your EV.