What is a battery management system (BMS)?
1. Introduction to Battery Management System
Battery Management System, abbreviated as BMS. The literal meaning is actually a battery management system, this system generally has the function of measuring battery voltage, mainly to prevent the occurrence of abnormal conditions such as battery over-discharge, over-charge, and over-temperature.
2. Common functions of battery management system
Common functions of battery management systems include: voltage measurement function, communication function, SoC estimation, SoH estimation, abnormal warning, abnormal protection, equalization (passive equalization or active equalization), other control circuits (such as battery loop relay control), temperature measurement , Current measurement, diagnosis, etc. With the development of technology, many new functions have been gradually added.
3. The number of common batteries in battery management systems
The management object of the battery management system is generally a rechargeable secondary battery, which is often matched with a lithium-ion battery pack.
Application fields of common series battery packs
Mobile phone: 1S
Tablet PC: 1~2S
Electric tools: 3~5S
Large tools such as electric lawn mowers: 10S up
Electric car: 80~100S
Electric bus: 100~200S up.
4. Common applications of battery management systems
What are the common applications of battery management systems? Generally speaking, this kind of system is designed for civilian use. So it can be seen in many places, such as mobile phones, voice recorders, MP3, MP4, notebook computers, electric vehicles, etc. These devices, instruments or vehicles that require rechargeable batteries.