UL Solutions announced significant enhancements to its testing methods for battery energy storage systems (BESS), which are crucial for storing energy from renewable sources. These updates address industry innovations and evolving fire risks.
The changes reflect updates found in the fifth edition of ANSI/CAN/UL 9540A, the Standard Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems. Key enhancements include clearer criteria for cell-to-cell propagation, high-temperature test methods for various battery chemistries, and testing protocols for emerging applications like rooftop BESS installations.
The new testing methods also include provisions for non-lithium-ion battery chemistries, such as sodium-ion batteries, reflecting the evolution of battery technology while continuing to address fire risk mitigation. This collaborative effort with the energy storage industry and regulatory authorities aims to enhance the resilience of energy infrastructure and protect communities.
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