10s-bms-powersafe

Technical description

Cells management

  • Management of 10 lithium cells in series, compatible with all cell technologies (NMC, LiFe, LiPo…)
  • Management of 1 NTC temperature sensors
  • Measurements accuracy:
    • Cell voltages: +/- 40 mV
    • Temperatures: +/- 1°C

Protections

  • Overdischarge, overcharge, overtemperature protection
  • Over-current software protection:
    • several configurable levels during charge and discharge phases
  • Short circuit hardware protection (electronic fuse in discharge):
  • Above 40 A for more than 100 µs

Balancing

  • Passive balancing with a 35 mA bypass current

Power box

  • Integrated power box with MOSFET technology:
    • 15 A continuous current in discharge
    • 30 A maximum peak current in discharge
    • 9 A continuous current in charge
  • Bidirectional current measurement with +/- 5 % of accuracy
  • Charge and discharge control
  • Precharge circuit included on the BMS

Smart functions

  • Automatic detection of the charger connection with wake up of the BMS
  • External communication via I2C serial link*
  • Auto diagnostics of the BMS

Power supply/consumption

  • Supply of the BMS directly on the battery pack
  • Very low consumption in sleep mode: < 30 µA

Mechanical format

  • 65 mm x 48 mm x 17 mm
  • Can be potted to be used in harsh environment

* Requires external opto-isolation