The general meaning of Battery Management System (BMS) is an electronic system aimed at managing a rechargeable battery, battery pack or cell. It can also protect the battery from functioning on the outer area of its safe and main operating zone. It also allows you to monitor its state, calculating secondary data, report it, control its environment, authenticate it and balance it.

While building battery packs along with a battery management system and external communication information or a data bus is known to be a smart battery pack. Therefore, a smart charger should only charge the intelligent battery pack. Several Battery Technology Courses in Bangalore help you understand it better.

Types of BMS

There is a wide range of battery management systems, from simple to complex. Each battery category depends on the technology they use, how we can install it, and the operation of the cells. To understand all the different types of BMS, you can Learn Battery Management System Course in Chennai.

  • Centralised BMS Architecture

It has only one central BMS in the battery pack assembly. Each part of the battery pack directly connects with the central BMS. There are some advantages of using centralised BMS. 

  • This architecture is more compact.
  • This architecture is the most economical as it uses only one BMS.

Here are some disadvantages of centralised BMS Architecture:

  • BMS requires a lot of ports to connect with all the battery packages because it has a direct connection with BMS.
  • Many wires, cabling, connectors, etc., are challenging to troubleshoot and maintain.

  • Modular BMS Topology

Here BMS is divided into several duplicated modules where each module has a dedicated bundle of wires. In addition, there are some cases in which BMS submodules reside under a primary BMS module. The main function of this module is to monitor the submodules’ status and communicate with peripheral equipment. 

It is easier to troubleshoot and maintain due to duplication in modularity. You can extend it to a larger battery pack. If you talk about its con, then the overall cost is higher. There may be some new duplicated functions depending on the application.

  • Subordinate/ Primary BMS

It is a similar concept to the modular topology. Here, in this case, the enslaved person provides measurement information only, whereas the primary purpose of the master is to control and care for the computation process. As the functionality of the slaves is simple so the overall cost can be lower than other parts. There are very few new features and overhead.

  • Distributed BMS Architecture

This architecture is different from what you have seen above. Here the software and electronic hardware are put inside the modules, which interface to the cells through wiring bundles. The distributed BMS architecture does not cooperate with all the electronic hardware on a control board placed on the cell. Even though it is simple, it isn’t easy to maintain and troubleshoot this module. The overall cost of this architecture is higher because it has more BMSs in the overall battery pack structure.


Battery Management System is very important in monitoring the battery, providing protection for the battery, determining the operational state of the battery, optimising battery performance and reporting operational status to external devices. If you want to know more about it, many courses are available in the market.

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