Hyundai Mobis Develops Battery System with Built-in Fire Extinguishing Feature

The BSA developed by Hyundai Mobis consists of a battery management system (BMS), hardware consisting of a fire extinguishing device and battery case, and software logic that controls them.

Based on the real-time data collected by the sensors, it analyzes the temperature and voltage of the battery and the pressure inside the battery system to determine any abnormalities. It then sets the location where the extinguishing agent will be sprayed and commands the fire extinguishing device to operate.

The software is designed to make quick and accurate decisions to deal with any physical changes that may occur in the battery system. Hyundai Mobis' highly reliable decision logic features multiple safety devices and a redundant algorithm structure.

The battery system is equipped with a fire extinguishing agent that is five times the capacity of a 3.3 kilograms home fire extinguisher. This agent is a substance with excellent cooling, insulation, and permeability properties, and is harmless to both the environment and human body.  

Hyundai Mobis has also applied for a total of three domestic and international patents, including a battery case and a fire extinguishing device. These also include piping for fire extinguishing agents and design that enables high-pressure spraying.

"As large electric vehicles with improved driving range appear, the safety standards for battery systems are becoming more stringent," said Park Yong Jun, Vice President, Battery System R&D Group, Hyundai Mobis. "We will integrate hardware and software to develop advanced battery systems that meet and exceed global standards, and introduce them to the global market."    

Meanwhile, Hyundai Mobis recently developed a new material that prevents battery overheating, and is currently focusing on commercializing it. This material, called pulsating heat pipe, is composed of aluminum alloy and refrigerant, and placing it between battery cells can lower the internal temperature of the battery system. It is expected to be applied as a thermal management system that can manage heat reliably even during rapid charging.

Media Contact 
Choon Kee Hwang: ckhwang@mobis.com
Jihyun Han: jihyun.han@mobis.com

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