13S 48V 45A BMS for Lithium Ion NMC Battery With Cell Balancing (Common Port)

A Battery Management System (BMS), also known as a protection board, is an electronic control circuit designed to monitor, manage, and regulate the charging and discharging of rechargeable batteries, whether a single cell or a combination of cells forming a battery. Lithium-ion batteries can only operate within specified conditions, known as the safe operating area. Therefore, a BMS is essential for monitoring the battery's state, ensuring safe operation, and extending battery life.

The key battery characteristics a BMS monitors include state of charge, voltage, current, temperature, individual cell voltage, battery capacity, and other vital parameters. The primary function of a BMS is to ensure the optimal utilization of the residual energy in the battery.

To prevent damage or failure, the BMS protects the battery from:

• Deep discharge caused by extremely high discharge currents.

• Overvoltage resulting from excessive fast charging.

• Cell imbalance in multi-cell batteries by monitoring and regulating the charging and discharging of individual cells.

• High temperatures.

• Short circuits due to external loads.

Protection Features

This BMS provides the following critical protections to a Lithium NMC battery pack having 13 cells connected in series. 

1. Overcharge Protection

2. Temperature Sensor Protection

3. Over-discharge Protection

4. Short Circuit Protection

5. Overcurrent Protection

6. Cell Balancing Function