Important features of HV-BMS solutions (400V and 800V)

  • BMS for 800V and 400V batteries, including:

    • Battery Management Unit

    • Cell Supervising Sensor Unit (monitoring of up to 72 cells per CSSU)

    • Current Voltage Sensor 

  • High-precision voltage and current measurement

  • Multi-string capability

  • Internal Iso-SPI / daisy-chain communication

  • Vehicle communication via CAN FD

  • Thermal Event Detection (TED) available as an additional module

  • Compact design with the option of customization

  • Combination with Power Distribution Unit (PDU) possible
     

Block diagram of a high-voltage battery management system

Specifications of the high-voltage system


Parameters

Operating temperature-40°C - 85°C
Storage temperature-40°C - 105°C
Operating humidity5% - 95%
Storage humidity5% - 95%
Operating altitude< 5000m
IP levelIP41
Lifetime≥15 Years
Flame rating (housing & connectors)UL94V0
DimensionBMU: 278*131*27.5 mm CSSU 72s: 273*91*23.5 mm 
Operating voltage9V - 16V 
Rated operating current≤200mA @ 13.5V 
Quiescent current≤0.2mA @ 13.5V
Maximum voltage endurance2000V AC