SLYY218 December   2022 BQ79731-Q1

 

  1.   At a glance
  2.   Authors
  3.   3
  4.   The working principle of a BMS and industry trends
  5.   New battery chemistries
  6.   Wireless BMS
  7.   Advanced estimations of battery capacity and battery health
  8.   A detailed look at the cell supervisor unit (CSU)
  9.   Traditional vs. intelligent battery junction box (BJB)
  10.   A detailed look at the BJB
  11.   A detailed look at the battery control unit (BCU)
  12.   Creating a complete battery test environment ecosystem
  13.   Conclusion
  14.   Additional resource
The reality of an all-electric future requires innovation in electric powertrain systems, which comprise BMS, onboard chargers and DC/DC converters, and traction inverters. At the heart of these systems are the semiconductor components that make electrification possible.

At a glance

Battery management systems (BMS) have evolved with the widespread adoption of hybrid electric vehicles (HEVs) and electric vehicles (EVs). This paper takes an in-depth look into the trends affecting BMS development, as well as how the major subsystems work together to improve safety and efficiency.
1 The working principle of a BMS and industry trends
Review how integrating the three major BMS subsystems enables safe, efficient battery packs, and explore new battery chemistries and BMS trends, including wireless BMS.
2 Advanced estimations of battery capacity and battery health
An accurate estimation of a battery’s remaining charge has a direct effect on the remaining driving range. Take a detailed look at the cell supervisor unit (CSU) and how it provides increasingly detailed cell status measurements to maximize the battery pack benefits.
3 Traditional vs. intelligent battery junction box (BJB)
Discover how silicon innovations are enabling a shift toward a more modern architecture known as the intelligent BJB, and learn about the role of the battery control unit (BCU) as the communication interface.