UNRIVALED ACCURACY
The Stafl Systems modular BMS1000 Series Battery Management System consists of one BMS Master Module and an application-specific number of BMS Monitor Modules.
1X Master BMS Unit
- Communicates with outside system via CAN 2.0B
- Manages pre-charging and contactors
- Monitors pack voltages
1-64X Monitor BMS Units
- Measures cell voltages and temperatures
- Balances cells
- Communicates with Master BMS via internal data link
Countless Applications
While a vehicle’s power system sees a battery pack as a single, high-voltage battery—charging and discharging the entire battery pack at once— the battery management system must consider each cell group’s condition independently.
The Stafl Systems BMS will continuously monitor important battery parameters for low voltage applications, while handling the varying power demands of the different operations and optimizing the usage of the battery.
The service life of a battery pack is tied to the weakest cell group in the system. In the balancing process, each of the cells within the string is maintained at optimal voltage levels, maximizing battery pack performance and cycle life.
Precise Engineering
Features
- Scalable from 12 to 256 Series Cells
- Temperature Sensor for Each Cell Group
- Supports up to 1000V Systems
- Low Steady State Cell Voltage Measurement Error (<2.0 mV)
- Individual Cell Group Balancing Resistors
- Externally Powered for Low Quiescent Battery Current
- High Current Shunt Monitor Circuit for Accurate Pack Current Sensing
- Pack Level Voltage Monitoring
- Integrated Isolation Fault Monitor Circuit
Typical System Diagram
Precise Engineering
Features
- Scalable from 12 to 256 Series Cells
- Temperature Sensor for Each Cell Group
- Supports up to 1000V Systems
- Low Steady State Cell Voltage Measurement Error (<2.0 mV)
- Individual Cell Group Balancing Resistors
- Externally Powered for Low Quiescent Battery Current
- High Current Shunt Monitor Circuit for Accurate Pack Current Sensing
- Pack Level Voltage Monitoring
- Integrated Isolation Fault Monitor Circuit
Typical System Diagram
Stafl Systems Battery Management Systems require one BMS Master Module (e.g. BMS1000M) and 1 to 64 BMS Monitor Modules (e.g. BMS1101S / BMS1102S) to function.
- Integrated precharge and main contactor control circuit
- Communication with Vehicle Control Unit (VCU) via standard CAN Bus Interface, with multiple supported baud rates
- Standard output messages include cell voltages/temperatures, pack voltage/current, and fault flags
- Runs internal balancing or commands received from VCU
- May be installed externally in appropriately sealed enclosure
- Ability to monitor and balance up to 12 series cells
- Allows system to be configured for packs with 12-256 series cells
- Yields excellent measurement accuracy across common pack conditions
- May be installed externally in appropriately sealed enclosure
- Ability to monitor and balance up to 12 series cells
- Allows system to be configured for packs with 12-256 series cells
- Yields excellent measurement accuracy across common pack conditions
- May be installed externally in appropriately sealed enclosure