BESS Explosion Venting Device
The application of Battery Energy Storage System (BESS) technology has advanced to the storage of battery cells in containers. However, these systems are not entirely risk-free, making the protection of their storage facilities crucial to prevent explosions caused by flammable gases and vapors during operation.
Explosion Relief Design
Explosion relief design is a critical measure to protect BESS by installing pressure relief devices that promptly release high-temperature and high-pressure gases during thermal runaway, preventing the container from bursting due to excessive pressure.
- Determining Explosion Relief Requirements and Calculating Relief Area:
According to NFPA 855 standards, it must first be determined if explosion relief calculations are necessary for the BESS. This depends on whether the flammable gas concentration—calculated based on battery gas production and container volume—reaches the lower flammable limit (LFL). If calculations are required, the necessary relief area and layout of pressure relief devices are determined based on NFPA 68 standards. - Pressure Relief Devices:
The Vent Pro S explosion relief panel is designed specifically for BESS thermal runaway protection. It complies with international standards such as UL 9540A, NFPA 68, NFPA 855, and ATEX. The panel automatically and rapidly releases pressure and flames when abnormal internal pressure arises, ensuring system safety.
Key Features:
- High safety compliance with international standards
- Easy installation and maintenance
- Customizable insulation thickness
- Wide operational temperature range
- Cost-effective
Fire and Explosion-Resistant Wall Design
Fire and explosion-resistant wall design involves installing fireproof partitions around or within the BESS to prevent fire from spreading to other areas.
- Lightweight Fire and Explosion-Resistant Panels:
The LS Lightweight Fire and Explosion-Resistant Panel is a new material ideal for building fireproof and explosion-resistant walls for BESS.
Advantages:
- Exceptional fire performance, passing CNS Level 1 fire-resistance and 3-hour interior fire endurance tests
- Lightweight, space-efficient, and quick to construct
- Flexible application for walls and ceilings
- Cost-effective
- Fire Resistance Duration Requirements:
According to technical specifications announced by Taiwan’s Bureau of Standards, Metrology, and Inspection, the fire resistance duration of BESS firewalls must be certified by relevant authorities.
Relevant Standards and Regulations
Fire and explosion-resistant designs for BESS must adhere to the following standards and regulations:
- CNS 10205: Emergency power supply for firefighting battery equipment
- CNS 62619: Safety requirements for secondary lithium cells and batteries containing alkaline or other non-acid electrolytes for industrial use
- CNS 62933 Series (EESS): Energy storage system standards
- Taiwan Power Company Technical Guidelines and Announcements
- International Standards (IEC and IEEE): Such as IEC 62619:2017 and IEEE 1547:2003
- NFPA 855:2020: Standard for the installation of stationary energy storage systems
These measures and standards collectively ensure the safety and reliability of BESS during operation.
