What is BMS battery management system?

BMS battery system is commonly known as the battery nanny or battery housekeeper, which is mainly for intelligent management and maintenance of each battery unit, preventing the battery from overcharging and over discharging, prolonging the service life of the battery, and monitoring the status of the battery.


The function of BMS battery management system

(1) Measurement of battery terminal voltage

(2) Energy balance between single cells

(3) Total voltage measurement of battery pack

(4) Total current measurement of battery pack

(5) SOC calculation: estimating the remaining capacity of power battery

(6) Dynamic monitoring of the working state of the power battery pack: to prevent overcharge or over discharge of the battery

(7) Real time data display

(8) Data recording and analysis: maintain the reliability and efficiency of the whole battery operation

(9) Communication networking function

What is a battery protection board?


During the use of lithium battery, under some conditions, overcharge and overdischarge may change the inside of the battery, which will affect the performance and life of the battery. Serious ones can even explode. The function of the protection board is to protect the cell. In most cases, the power lithium battery must be used together with the protection board to ensure the safety and reliability of the whole system.


Main functions of battery protection board

1. Overcharge protection function. Overcharge protection function refers to stopping charging when a certain voltage is reached.

2. Over discharge protection function. The over discharge protection function is to stop discharging the load when the battery voltage becomes low.

3. Over current protection function. Over current protection function is to stop the discharge of the load when consuming large current. The purpose of this function is to protect the battery and MOS tube and ensure the safety of the battery in working state.

4. Short circuit protection function: it is the core of protection chip.

Difference between BMS battery management system and battery protection board

BMS battery management system and battery protection board are both umbrella of lithium battery, but BMS management system is equivalent to the brain of lithium battery, which is more intelligent, can be edited and configured with battery management software. The protection board is IC + MOS, plus some resistors, capacitors and other components, belonging to hardware protection. Compared with the protection board, BMS battery management system is more convenient.