Huawei Digital Power’s Smart String & Grid Forming Energy Storage System (ESS) has successfully passed the extreme ignition test, witnessed by customers and DNV, a globally recognized independent organization in assurance and risk management. This groundbreaking test, conducted under real-world scenarios and innovative methodologies, validates the ESS’s capabilities in extreme conditions, marking a significant milestone in advancing safety standards for the energy storage industry.
Verification in Extreme Conditions: All-Scenario Ignition Test
Aligned with the international standard UL 9540A test method, Huawei Digital Power elevated the rigor of the test by significantly increasing the number of cells subjected to thermal runaway. This approach comprehensively verified the safety protection capabilities of the Smart String & Grid Forming ESS in extreme ignition scenarios, setting a new benchmark for safety testing.
Highlight 1: Real-World Verification with 100% Mass-Produced Products
The test was conducted using four mass-produced Smart String & Grid Forming ESSs, fully charged and deployed in real-world conditions, ensuring a comprehensive and realistic system-level verification without manual intervention.
Highlight 2: Thermal Runaway in 12 Cells Causes No Fire or Explosion
In Huawei’s ESS, thermal runaway in 12 cells was safely managed with its innovative defense mechanism, preventing fire or explosion and demonstrating its ability to contain faults at the battery pack level.
Highlight 3: Fire Resistance Prevents Propagation under Maximum Oxygen Supply
Even under extreme combustion conditions with maximum oxygen supply, adjacent containers showed minimal temperature rise, confirming the system’s resilience and the integrity of the fire-resistant layers.
Highlight 4: Slow Fault Progression Allows Early Intervention
Huawei’s ESS delayed fire ignition for 7 hours during thermal runaway, providing critical time for intervention and reducing the risk of serious accidents.
Technical Breakthrough: Redefining ESS Safety Logic
ESS safety is critical to the sustainable and high-quality development of the renewable energy industry. The success of this test underscores Huawei Digital Power’s major breakthrough in system safety, delivering comprehensive protection from the battery cell level to across the entire system. Through architectural innovation, the company has enhanced the safety protection mechanism of the ESS from the container level (industry standard) to the pack level, effectively preventing thermal runaway spread.
By leveraging safety verification experience to formulate industry standards, Huawei Digital Power is fostering the healthy and high-quality development of the energy storage industry. This effort supports the creation of safer energy infrastructure for new power systems, ensuring a sustainable energy future.
