Overview
Solutions
HW Evaluation Tools
Resources
Tools and Software
Key Products
Get Started

Automotive Battery Management Systems (BMS) must be able to meet critical features such as voltage, temperature and current monitoring, battery state of charge (SoC) and cell balancing of lithium-ion (Li-ion) batteries.

Indeed, the main functions of a Battery Management System for electric vehicles are:

  • Battery protection in order to prevent operations outside its safe operating area.
  • Battery monitoring by estimating the battery pack state of charge (SoC) and state of health (SoH) during charging and discharging.
  • Battery optimization thanks to cell balancing that improves the battery life and capacity, thus optimizing the driving range for hybrid (HEV), plug-in (PHEV) and full electric vehicles (BEV).
automotive battery management system bms

New highly-integrated solution for your Automotive BMS design

ST's Battery Management System solution for automotive applications is specifically conceived to meet all these demanding design requirements.

Based on the new highly-integrated Battery Management IC L9963 and its companion isolated transceiver L9963T, our solution is able to provide the highest accuracy measurements of up to 14 cells in series, on mono or bi-directional daisy-chain configuration, embedding sophisticated cell monitoring & diagnostic features. It also meets the stringent Automotive Safety Integrity Level (ASIL) D compliance.

Together with our 32-bit Automotive MCU family, Power Management & System Basis ICs, VIPower Smart Switches, a wide offer of Protection Devices and automotive EEPROM for datalog, ST comes with a comprehensive and flexible solution to support your automotive-grade Battery Management System design.

Battery Management System (BMS) block diagram

Picture Solution
Battery Management System (BMS) Solution
Battery Management System (BMS) Solution
00 Files selected for download

Publications and Collaterals

    • Description Version Size Action
      Automotive multichannel power management ICs 1.0
      698.09 KB
      PDF
      ETAS RTA AUTOSAR Starter kit 1.0
      2.43 MB
      PDF

      Automotive multichannel power management ICs

      ETAS RTA AUTOSAR Starter kit

    • Description Version Size Action
      Automotive-grade protection devices and rectifiers 1.0
      825.43 KB
      PDF
      Diodes and rectifiers selection guide 2.0
      815.09 KB
      PDF
      Protection devices and integrated EMI filtering selection guide 2.0
      743.69 KB
      PDF
      Protection devices selection guide 1.0
      1.27 MB
      PDF
      SPC58 B/C/G-lines - Automotive MCUs for car body & security 1.0
      749.41 KB
      PDF

      Automotive-grade protection devices and rectifiers

      Diodes and rectifiers selection guide

      Protection devices and integrated EMI filtering selection guide

      Protection devices selection guide

      SPC58 B/C/G-lines - Automotive MCUs for car body & security

    • Description Version Size Action
      Driving smart power in automotive 1.0
      1.24 MB
      PDF
      Electro-Mobility Applications Brochure 1.0
      1.3 MB
      PDF

      Driving smart power in automotive

      Electro-Mobility Applications Brochure