The USPTO granted patent US12592422B2 to SK On Co., Ltd. on March 31, 2026 for a battery fire detection device and energy storage system. The invention includes a first sensor to detect gas vent opening, a second sensor to measure battery cell temperature, and a controller that evaluates both inputs to determine fire risk or actual fire occurrence. The patent covers 9 claims filed under application number 18422631 with CPC classifications H01M 10/486, H01M 10/4207, and H01M 50/143.\n\nPatent grants do not create compliance obligations or require action from regulated entities. Companies developing battery technology or energy storage systems may wish to review the patent claims to assess whether their products or methods may fall within the protected scope. This information is relevant for R&D planning and freedom-to-operate analysis rather than regulatory compliance.