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 do we need a battery management system (BMS)?

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. And the its performance will degrade with the frequent use. A battery management system (BMS) can help in this situation.

How does BMS prevent overvoltage/undervoltage?

BMS prevents overvoltage/undervoltage by limiting the charging current or stopping the charging process. When the battery's voltage is higher/lower than the safe voltage, the BMS will shut down the charging circuit to prevent damage to the battery. Overcharge and overdischarge can cause the battery temperature to rise or even cause thermal runaway.

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.

How do I know if my BMS battery is compatible?

To ensure compatibility, verify that the BMS specifications match your battery’s voltage, capacity, and chemistry. Check for specific features such as maximum current ratings and cell count support. Consulting manufacturer guidelines or technical documentation can also help confirm compatibility.

How does BMS communicate with other devices?

BMS can communicate with other devices through communication interfaces, including the car's on-board computer. This interface can provide important diagnostic data about battery status and functionality. How does BMS work？