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What is the purpose of a lithium battery management system (BMS)?

December 06 , 2023
What is the purpose of a lithium battery management system (BMS)?


The battery management system for lithium ion battery has three important functions:


1. Accurately estimate SOC:
Accurately estimate the state of charge (SOC) of the power lithium battery pack, that is, the remaining power, to ensure that the SOC is maintained within a reasonable range, prevent damage to the lithium-ion battery due to overcharging or over-discharging, and display the remaining power of the battery at any time.

2. Dynamic monitoring:
During the charging and discharging process of lithium-ion batteries, the voltage and temperature of each battery in the battery pack, the charging and discharging current, and the total voltage of the battery pack are collected in real time to prevent overcharge or overdischarge of the battery. At the same time, it can reflect the battery status in a timely manner, select problematic batteries, maintain the reliability and efficiency of the entire set of lithium-ion battery operations, and make it possible to implement the remaining power estimation model. ACEY 1-45 series 300A battery management system tester is used to assess and evaluate the performance of Battery Management Systems, it plays a vital role in simulating and testing battery voltage, temperature, state of charge and balance,etc.
1-45 series bms tester

3. Balance between lithium-ion batteries:
That is, balanced charging of single batteries, so that each battery in the lithium-ion battery pack reaches a balanced and consistent state. Balance technology is a key technology of battery energy management system that the world is currently researching and developing. In addition, ACEY's portable battery active equalizer can also be used to solve the problem of uneven battery cells after power batteries are connected in series, which leads to the expansion of battery cell unevenness, resulting in shortened battery life, reduced cruising range, and even battery failure.
portable battery active equalizer
Normally, the lithium-ion battery management system determines how to manage the battery pack through two parts, namely the detection module and the original acid control module.

The implementation of the detection module is relatively simple. The important thing is to collect the parameter information of the lithium-ion battery during use through the sensor, such as: temperature, voltage and current of each battery cell, voltage and current of the battery pack, etc. These data will play a vital role in the subsequent battery pack management. It can be said that without the support of these battery status data, the system management of lithium-ion batteries will be impossible.


Acey new energy is a professional manufacturer specialized in Lithium Battery Pack Assembly Machine, such as battery capacity grading machine, battery barley paper sticking machine, battery sorting machine, BMS tester, battery spot welding machine, laser welding machine, battery comprehensive tester, battery pack charge discharge tester, etc and we provide one-stop solution for Lithium ion battery pack assembly line. If any interested, please feel free to contact us.


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