What are overvoltage and undervoltage protection?

Overvoltage protection and undervoltage protection are essential features in battery management systems (BMS) designed to maintain battery health and safety.

What is overvoltage protection in battery management systems?

Understanding Overvoltage Protection in Battery Management Systems Overvoltage protection is a safety mechanism that prevents a battery from being charged beyond its maximum voltage rating. This is crucial because excessive voltage can lead to overheating, reduced battery life, or even catastrophic failure such as thermal runaway.

How does undervoltage protection work?

Undervoltage protection operates through these key processes: Monitoring Voltage Levels: The BMS tracks the voltage of each cell during discharge. Threshold Setting: A minimum voltage threshold is established based on the battery type.

What is battery energy storage?

Battery energy storage is widely used in power generation, transmission, distribution and utilization of power system . In recent years, the use of large-scale energy storage power supply to participate in power grid frequency regulation has been widely concerned.

What happens if a battery is overvoltage at 150 min?

At min, the internal of the battery returned to normal. At min, unit 38 experienced a certain degree of overvoltage. After a period of troubleshooting, the overvoltage problem was solved at 150 min. Fig. 4. (a) BESS power requirements for frequency regulation; (b) SOS profiles of unit 38 and 98; (c) SOC profiles for each unit.

Why is battery energy storage a safety problem?

Due to the “short board effect”, the available capacity of BESS will decrease, resulting in failure . Therefore, with the emergence of the scale effect of battery energy storage, the safety problem has become a new risk challenge faced by the development of energy storage. We should pay attention to the safety risk management in time.