United Kingdom, 14 April 2025: Hyundai Mobis has introduced a next-generation electric vehicle battery system equipped with an integrated fire extinguishing unit, marking a significant step forward in EV safety technology. The new Battery System Assembly (BSA) is designed to prevent heat from spreading between cells during malfunctions, effectively reducing the risk of large-scale thermal incidents.

According to the press release by Hyundai Mobis, the system can automatically deploy a fire suppressant within five minutes of detecting the first signs of ignition. This interval aligns with current safety regulations in Europe, China, and India. These regulations mandate a minimum five-minute delay in thermal runaway between cells to allow passengers time to safely evacuate the vehicle in the event of an accident.

However, Hyundai Mobis says its technology is built not just to meet existing rules but to stay ahead of anticipated global safety standards. Future regulations are expected to focus on completely preventing heat transfer between battery cells, and the company believes its system positions it at the forefront of this shift.

The new system integrates several components like a next-gen battery management unit, dedicated fire-extinguishing hardware, a customised housing structure, and advanced control software. By continuously monitoring real-time data such as temperature, voltage, and internal system pressure, the system can detect and identify any abnormalities within the battery. This software can quickly identify abnormalities, pinpoint the affected area, and activate the fire suppression device accordingly.

To avoid unnecessary or false activations, the system employs a multi-layered safety strategy featuring multiple fail-safes and redundant algorithms. Hyundai Mobis has also secured three patents, both in South Korea and internationally, covering key components of the fire suppression technology.

In an official press release by Hyundai Mobis, Park Yong Jun, Vice President of the Battery System R&D Group at Hyundai Mobis stated,” As large electric vehicles with longer driving ranges become more common, safety standards for battery systems are tightening, we aim to integrate both hardware and software innovations to deliver battery systems that exceed international safety expectations and bring them to markets around the world.”

With its newly unveiled Battery System Assembly, Hyundai Mobis is pushing the boundaries of EV safety by integrating advanced fire suppression technology directly into the battery pack. By anticipating future regulations and prioritising both passenger safety and environmental responsibility, the company positions itself as a front-runner in next-generation battery innovation for the global electric vehicle market.