#China #Shenzhen #Huawei Digital Power #Extreme Testing #CI GFM ESS

Huawei Digital Power's CI GFM ESS Passes Strenuous Extreme Ignition Test

In a significant achievement for energy storage technology, Huawei Digital Power's commercial and industrial energy storage system (C&I GFM ESS) has successfully undergone an extreme ignition test, establishing its competence in fire safety within the energy storage sector. Conducted under the observation of TÜV Rheinland at a national key fire safety laboratory, this test marks a notable milestone as it aligns with the latest UL 9540A2025 standards.

Overview of the Testing Environment

The severe testing conditions set by TÜV Rheinland aimed to create the toughest verification environment in the industry, enabling a thorough assessment of the energy storage system's (ESS) safety performance during extreme ignition scenarios. This involved initiating simultaneous thermal runaway in 60 battery cells using a battery-level overcharging method, escalating the seriousness of the evaluation.

To ensure a comprehensive evaluation, several stringent conditions were implemented:
1. Open-Door Ignition Test: Conducted under conditions that maximized oxygen availability, following the specifications outlined in UL 9540A2025.
2. Fully Charged Batteries: All batteries within the system were at 100% state of charge to simulate a full-capacity scenario.
3. Deactivated Fire Suppression Systems: Both proactive and passive fire protection systems were disabled, necessitating total reliance on the internal design to withstand fire hazards at maximum energy output.

Five-Tier Protection System

Under these extreme conditions, Huawei's CI GFM ESS demonstrated exemplary safety performance, underpinned by an innovative five-tier protection structure:

• - Thermal Insulation: The system includes thermal insulation between cells that effectively slows heat propagation, providing critical initial protection.
• - Metal Casing: The block casing is designed to resist temperatures exceeding 1500 °C while maintaining structural integrity amidst intense fires, thus minimizing damage.
• - Positive Pressure Oxygen Blocking: An innovative design reroutes flammable gases, significantly reducing fire impact.
• - Fire-Resistant Labyrinth Construction: All sealing surfaces within the ESS feature a labyrinth design that effectively inhibits flame spread.
• - Enhanced Fire-Resistant Containers: The container is armored to provide comprehensive fire protection.

Proven Performance Metrics

Critical metrics from the test reliably confirm the CI GFM ESS system's security and dependability. At the peak fire temperature of 961 °C, the maximum temperature recorded in the adjoining ESS cell was merely 45.3 °C—well below the threshold for releasing the explosion-proof vent of the cell. The system met the demands set by UL 9540A2025 without facilitating fire spread between units.

Additionally, the test revealed a maximum heat release rate (HRR) of 3 megawatts, and the entire combustion process lasted under three hours before self-extinguishing. Even under open-door burning conditions, the system adeptly managed heat release, showcasing exceptional thermal management capabilities.

Conclusion

Huawei Digital Power's CI GFM ESS not only exemplifies cutting-edge technology in energy storage but also sets a standard for safety and reliability within the industry. With successful passage of such stringent testing, the CI GFM ESS is poised to cater effectively to commercial and industrial needs, ensuring peace of mind for end users when it comes to fire safety and system integrity.