SLYY218 December 2022 BQ79731-Q1
- At a glance
- Authors
- 3
- The working principle of a BMS and industry trends
- New battery chemistries
- Wireless BMS
- Advanced estimations of battery capacity and battery health
- A detailed look at the cell supervisor unit (CSU)
- Traditional vs. intelligent battery junction box (BJB)
- A detailed look at the BJB
- A detailed look at the battery control unit (BCU)
- Creating a complete battery test environment ecosystem
- Conclusion
- 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. |