Tomorrow’s Technology Today ™
through SCOTTY AI V3 bi-directional feature to the 12V starter battery or if not connected dispersed with a max controlled voltage to 12V loads. This is a complete contrast to traditional 48V alternators and external regulators which control of field current with more than a 1 second delay. In that amount of time, the contained energy of the “load dump” is considerable. Generally, the battery/controller cannot respond fast enough should the battery relay open in these traditional alternators with external regulators unless pre-warning is issued 2 seconds ahead of time. This is hard to guarantee. o SCOTTY AI V3 stops the BMG when an alarm is sent from the battery BMS and/or the BMS Charge Current Limit is reached and/or the BMS sends a reduced Charge Voltage limit indicating the battery is approaching maximum charge state. There is also a feature-in wire to stop charge. o SCOTTY AI V3 stops the BMG when temperature approaches setpoint set in APP protect the system from overheating. It starts to derate at maximum BMG temperature less 10C. Power Control in Mild Hybrid Mode: o SCOTTY AI V3 needs to read throttle position from vehicle ECU and based on that, changes mode from Charging to Idle to Power control. This is an optional feature and needs availability from the ECU on vehicle CAN. o SCOTTY AI V3 operates the BMS as a Mild Hybrid. It allows power control when throttle position is neutral until connected 48V battery reaches target minimum voltage set in the App. This will add torque to the engine and reduce fuel consumption when the vehicle is idling or starting out. It assists the automated “Start/Stop” function of vehicles. Variable Power Control to Harness Free High Power: o An alternative to the Mild Hybrid operation is to change the charging level to “Hard” when the throttle position is neutral, and when the throttle position is positive change to “Soft”. The result is charging the auxiliary 48V battery at the maximum level when the vehicle is coasting or braking, effectively harnessing “free energy”. Then when accelerating, the BMG and DC-DC load on the engine is soft. The added advantage of this approach is the BMG is relaxed for a maximum output and not 100% duty cycling at max. This results in a higher aggregate output. Charging Control at 48V from 12V Starter Battery and factory alternator: o SCOTTY AI V3 drives charging either to the same connected 48V battery or an entirely independent 48V battery system using the in-built DC DC feature. If connected to the same 48V battery as the BMG then control is synchronised between the two units with exactly the same battery control and safety provisions. In this case the power output of the combined unit is maximised to approx. 10kW if the 12V factory alternator is 250A and above. The full functionality is described in the manual and supported by a configuration and real time monitoring app. This is a standard included feature. The high output 12V alternator is either factory provided or an optional after-market unit. o SCOTTY AI V3 can charge as described above from either a 12V starting system or a 24V starter and battery system. o SCOTTY AI V3 determines the optimum voltage and current charging parameters based on battery voltage, state of charge, charge current limit and temperature.
Safiery Pty Ltd ABN: 87 624 588 807 45/8 Distribution Court, Arundel QLD 4214 (07) 210 22 55 3 safiery.com Confidential and Proprietary. Copyright Safiery Pty Ltd 2025 Scotty Ai is protected by International Patent
Powered by FlippingBook