Advanced High Voltage System
Fully Integrated Controls
The Ampere EV high voltage system is fully integrated from top to bottom. All control software was developed in house and designed to work together at every level with the hardware included in the Atom Drive System. The Ampere battery management hardware was designed and manufactured specifically for the Atom Drive battery modules and integrates seamlessly with the vehicle’s control system.
High Voltage Junction Box
The Ampere EV Junction box is among the most compact units on the market occupying a footprint of just 10.25 by 6.30 inches. The Junction box manages to house battery inputs and outputs, main traction pack fusing, accessory fusing, pre-charge circuit, HV discharge circuit, High Voltage Interlock Loop monitoring, and connectors for 5 high voltage accessory devices.
Battery Management System
The Ampere Battery Management System (BMS) was designed and developed in-house to suite the specific needs of the Aton Drive battery modules. Each board is managed by its own ARM processor and all boards within a system communicate freely with one another to optimize performance across the entire battery system. The BMS auto-identifies one bard to act as a primary controller for the rest and handle data communication with the Ampere VCU. Each individual board monitors battery cells through a state of the art Texas Instruments battery monitor chip. 3 chips per board work together with the MCU to relay all the critical data back to the primary controller.
Atom Drive BMS boards also monitor the HVIL found in each battery module as well as control the onboard safety contractor, only energizing the battery module when all systems are connected properly.