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Battery Management System

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1.0 System Schematics



2.0 System Features

  • Monitors voltage and temperature of each cell through Sampling Boards.
  • Cell balancing; Adjustable shunt power.
  • Daisy chain connection of all sampling boards. Clean, simple and easy connection.
  • SOC and alarm status display.
  • Programmable system setup, alarm configurations and balancing parameters.
  • Interfacing with charger. Monitoring and controlling charging process.
  • Protection against over-charging, over-discharging, over-temp and excessive current draw.
  • Alarm output which can be used for interlock.
  • LCD display of battery pack information.

3.0 System Components

   3.1 Sampling Boards

  • One sampling board per cell; Connected in series forming a daisy chain.
  • Monitors voltage and temperature of each cell.
  • Cell balancing; Adjustable shunt power.
  • Automatic cell indexing.

Sampling Boards Mounted On Top Of GBS Cells

Battery Covers Concealing Sampling Boards

   3.2 Control Units

  • Measures pack current
  • Connects to sampling boards, SOC Meter and Link Hub

Control Unit

   3.3 SOC Meter and Alarm Status Indicator

  • - Displays SOC and alarm status
  • Links to Link Hub

SOC Meter and Alarm Status Indicator

   3.4 Link Hub

  • Hub connections to charger, LCD display, alarm output (for motor controller)

Link Hub

   3.5 LCD Display

  • Used for programming of system setup, alarm configurations and balancing parameters.
  • Displays all measured parameters, calculated values and alarm status.
  • Optional after system setup.

LCD Display

   3.6 Charger

  • Three step charging program: constant current, constant voltage and pulsed charging steps.
  • Interfacing to BMS. Charging process controlled by BMS.
  • Charging status indicator.

Charger Interfacing to BMS

4.0 Notes
  • System is sold only as part of package with GBS batteries. It is not sold separately.
  • Patents pending.
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Technical Reference

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