Hyundai Mobis has developed a new technology that prevents overheating during ultra-fast charging of electric vehicles.
On the 17th, Hyundai Mobis announced that it will commercialize the Pulsating Heat Pipe. A pulsating heat pipe is a metal tube-shaped heat conductor that enhances the efficiency of heat transfer between objects. Composed of aluminum alloy and refrigerant, placing it between battery cells can lower the rapidly rising internal temperature of the battery during quick charging.
The pulsating heat pipe can evenly transfer heat as the refrigerant vibrates and circulates inside. According to Hyundai Mobis, there is almost no degradation in performance due to gravity even when applied to a high-speed car. Its heat transfer performance is over 10 times higher than that of regular aluminum, allowing rapidly heated battery cells to discharge heat quickly to the outside. Typically used for heat control in devices like smartphones, this is the first application in a battery cooling system.
The Battery System Assembly (BSA) consists of a battery management system (BMS), cooling fans, and various electronics added to the battery module. Among them, the battery module that generates electrical energy is a component stacked with battery cells and requires a cooling structure. Hyundai Mobis has succeeded in stabilizing the internal temperature by placing the pulsating heat pipe between these battery cells.
Hyundai Mobis has simplified the manufacturing process and lowered costs by introducing a press method during the production stage. Additionally, it has implemented a pulsating heat pipe with a thickness of 0.8 mm to be mounted in vehicle batteries, whereas the thickness of regular heat pipes is about 6 mm.
A Hyundai Mobis official noted, "Ensuring battery safety and reducing charging time are key prerequisites for overcoming the electric vehicle chasm," and added, "We will actively promote this technology and pursue sales to global automakers."