Muller Industries Battery Management System Low Voltage User Guide

MIUSA-BMSLV FEATURES AND MODES OF OPERATION

The MIUSA-BMSLV can perform the following functions:

• OV (Over Voltage), UV (Under Voltage), OT (Over Temperature) protection
• Interact with vehicle management unit (VMU) or system controller
• Charge control
• Inter-module balance
• Data collecting

a) OV (Over Voltage), UV (Under Voltage), OT (Over Temperature) protection: In case any one of battery cells has a voltage or temperature out of the operational range, the system will issue first a warning, then an alarm. An alarm usually requests that a contactor be opened to stop the discharge or charge condition.

b) Interact with Vehicle Management Unit (VMU): MIUSA-BMSLV will communicate with VMU by CANbus, RS-485, or a combination of analog and digital signals to make the system work under the control of a VMU.

c) Charge control: The charge process is carried out under the control of MIUSA-MIUSA-BMSLVLV. The MIUSA-BMSLV communicates with the charger via CANbus, RS-485, or an analog output to achieve real-time control purpose.

d) Inter-module balance: When the MIUSA-BMSLV detects there is SOC (State Of Charge) difference between battery packs, it will engage the inter-module balance circuit of the pack with higher SOC.

e) Data collecting: the MIUSA-BMSLV will poll all of the modules for the battery information. The information is sent from the MIUSA-BMSLV via a Controller Area Network bus line (CANbus).