What is lithium battery management system (BMS)?

Lithium Battery丨Battery Management System (BMS) Explained Lithium batteries are very useful and many of the products we use every day are powered by them,like golf carts, power wheels, trolling motor, RV, etc. While, it is difficult to manage the battery because of the complex design.

Why does a lithium battery need a balancing system?

Because the cells within a lithium battery are connected in series, they all charge and discharge at the same energy level. However, if a proper cell balancing system is not in place, the differences between the cells may increase over time, which will gradually decrease the overall capacity of the battery.

Can BMS protect a battery from a short circuit?

Faulty wiring will cause short circuit which poses a significant risk to both the battery and the connected device. And BMS can protect the battery from short circuit. Unlike lead-acid, the voltage of a fully charged lithium battery rises quickly. If not controlled in time, it may cause battery degradation.

What is the operating voltage of a lithium battery?

Battery cells' operating voltage is between 2.5V and 4.2V depending on the lithium chemistry used. Running the battery beyond this range will result in a significant reduction in battery life and may even damage the battery.

What happens if a lithium battery is unbalanced?

Over time or through use, these differences can unbalance the cells within the battery, resulting in a discrepancy of between 3% and 6% depending on the usage conditions and charge/use cycles of the lithium battery. When a lithium battery becomes unbalanced, it means that its component cells do not have the same charge or state of charge.