Battery BMS voltage

What is battery management system (BMS)?

Battery Management System (BMS) is the “intelligent manager” of modern battery packs, widely used in fields such as electric vehicles, energy storage stations, and consumer electronics.

Why should you use a battery monitoring system (BMS)?

By doing all of this, the BMS helps extend battery life, improve efficiency, and ensure the safety of your EV. 1. Voltage Monitoring and Control (Lithium-Ion Battery Example) In Lithium-Ion batteries, each cell has a voltage range —usually between 2.5V to 4.2V.

How does BMS balance a battery cell?

Balancing operation: After deciding to balance the voltage, BMS will discharge the battery cell with a higher voltage or charge the cell with a lower voltage through the charge and discharge controller. This helps reduce voltage differences between battery cells.

How does a BMS monitor a battery pack?

Detection of imbalance: The BMS continuously monitors the voltage of each cell or module in the battery pack. When the voltage of some cells is significantly higher than that of others, or the voltage difference exceeds a preset threshold, the BMS determines that the battery pack is unbalanced.