HyperStrong has not only invited overseas clients to observe the large-scale fire test on-site, but also hosted an industry-first global live broadcast, with more than 40 clients attending virtually from around the world. It highlights HyperStrong's confidence in HyperBlock III's fire-resistant design and thermal insulation performance.
Rigorous Testing Showcases Core Strength
The test simulated a real-world field configuration by deploying five HyperBlock III units in a “back-to-back and side-by-side” arrangement to accurately replicate heat transfer and temperature distribution between containers under real-world fire scenarios. All units were tested at 100% State of Charge (SOC) with no intervention from the fire suppression system. The test strictly adhered to the CSA/ANSI C800:2025 and UL9540A (latest draft version) installation-level requirements.
A 16-Hour Fire Test: Validating Superior Safety
After 16 hours of intense combustion, the enclosure's structural integrity remained intact. The enclosure doors feature a self-developed reinforced connection and locking mechanism, ensuring high structural strength and reliable closure under extreme conditions. This design effectively withstands the impact of high-temperature combustion and thermal expansion within the enclosure, maintaining stable closure throughout the entire test.
Superior Fire Resistance: Fortifying the Safety Barrier
During the test, the fire intensity peaked 3 hours after ignition, with the internal temperature reaching 1,400°C. However, there were no signs of burning on the liquid-cooling units or electrical control cabinets on the side of the burned unit, and the temperature fluctuations within the four neighboring energy storage units remained stable. The peak cell temperature in the back-to-back unit was just 56°C, while the peak cell temperatures in the other neighboring units all remained below 35°C. In addition, there were no thermal runaway or fire spread incidents during the test.
This outstanding performance demonstrates HyperBlock III's leading performance in fire resistance and thermal insulation among similar 5MWh energy storage products in the industry.
HyperStrong AI Platform: Safeguarding Comprehensive Control
The HyperStrong AI Platform demonstrated its indispensable value during the test—the battery management system (BMS) in the four neighboring containers operated stably throughout the combustion. Uninterrupted data communication links were maintained, with temperature and voltage data synchronously uploaded from thousands of cells to the AI platform at millisecond intervals. The platform can automatically identify abnormal temperature trends and issue warnings.
The results demonstrate that the HyperStrong AI Platform not only enables data-driven emergency decision-making through early alerts, but also preserves comprehensive logs for post-event analysis, supporting continuous system improvement in real-world operations.
Upholding the Safety Essence
“Safety is the lifeline of the energy storage industry and the foremost principle in
HyperStrong's product development,” said Dr. Qian Hao, CTO of HyperStrong. “Before this test, we have conducted precise simulation calculations and combustion behavior validation at the cell, module, cluster, and full-system levels, systematically verifying the thermal resistance and isolation design across the entire architecture.
The fact that HyperBlock III passed the large-scale fire test in a single attempt demonstrates our rigorous safety design and long-term commitment to high safety and reliability in energy storage innovation. This test provides customers with confidence in the safety of our products that goes beyond standard requirements.
Benchmark Leadership, Enabling the Future
The successful large-scale fire test of HyperBlock III delivers invaluable empirical data and best practice references to the global energy storage industry. It actively drives the continued refinement and advancement of international energy storage safety standards. It also lays a robust groundwork for HyperStrong's next-generation high-energy-density, high-safety systems and establishes the critical safety foundation for future energy storage infrastructure.
With this successful test, HyperStrong reaffirms its commitment to technological innovation. By advancing toward safer, smarter, and more efficient systems, HyperStrong continues to drive the global energy transition and set new standards for industry safety.
