A battery management system (BMS) is any electronic system that manages a rechargeable battery (cell or battery pack), such as by protecting the battery from operating outside its Safe Operating Area, monitoring its state, calculating secondary data, reporting that data, controlling its environment, authenticating it and / or balancing it.

A battery pack built together with a battery management system with an external communication data bus is a smart battery pack. A smart battery pack must be charged by a smart battery charge

The BMS has four main objectives:

  • Protect the cells and the battery from damage.
  • Prolong the life of the battery.
  • Maintain the battery in a state where it can meet the requirements of the application.
  • Interface with the host application

Functions of Battery Management System

  • Cell Protection
  • Charge Control
  • Demand Managemet
  • SOC Determination
  • SOH Discharge
  • Cell Balancing
  • Communication