Hyundai Mobis announced on the 14th that it has developed a new technology that automatically extinguishes electric vehicle battery fires, preventing 'thermal runaway.'
Hyundai Mobis introduced that the technology can automatically spray extinguishing agents to immediately suppress fires in the event of ignition of electric vehicle battery cells, and it is not yet commercially available worldwide.
In major countries such as Europe, China, and India, it is mandatory to delay thermal runaway for at least 5 minutes after battery cell ignition. Some countries are strengthening regulations to prevent the transmission of heat altogether.
A Hyundai Mobis official noted that the battery system with cell-level extinguishing capabilities (Battery System Architecture) will be recognized as a next-generation safety technology in the global market.
The battery system developed by Hyundai Mobis consists of hardware comprising a battery management system (BMS), extinguishing devices, and battery cases, along with software logic that controls them.
Among these, the BMS analyzes battery temperature, voltage, and pressure based on real-time collected data to detect anomalies and instructs the precise location to spray extinguishing agents in the event of ignition.
The software logic is designed for fast and accurate judgment and response with the application of multiple safety devices and a redundant algorithm structure. Hyundai Mobis has also filed for domestic and international patents on extinguishing agent piping and spraying design technology.
Park Yong-joon, head of the battery system research lab at Hyundai Mobis, said, "As the emergence of large electric vehicles with extended driving ranges raises the safety standards for battery systems, we will introduce an advanced battery system that surpasses global standards and integrates hardware and software."