Enhanced Safety Measures rolled out in Samsung SDI’s new EV Battery Design
12. June 2025Samsung SDI has finalized the development of its “No-Thermal Propagation” (No-TP) technology aimed at preventing the spread of heat in electric vehicle (EV) batteries—a leading cause of battery-related fires. Announced through the company’s newsroom on February 18, the technology incorporates specialized safety materials and a cooling plate to isolate thermal events at the cell level, thereby extending battery life and usability by allowing for localized component replacement. A proprietary software tool, the Thermal Propagation Calculator (TPc), plays a key role by quantifying thermal propagation risks and supporting engineers in optimizing battery design from the earliest development phases. The Korean government has already declared plans to introduce EV Battery Certification and Tracking. Other Battery types usually require KC Safety certification in order to be approved for import and sale in Korea.
The No-TP approach is applicable not only to individual cells but also to modules and packs, with TPc-optimized features already embedded in Samsung SDI’s latest battery products. Innovations such as insulation layers between cells and prismatic battery designs using a stacking method for electrode plates further enhance safety by reducing internal pressure and enabling multidirectional gas dispersion during malfunctions. These measures aim to mitigate gas accumulation and limit thermal incidents. Samsung SDI reaffirmed its commitment to developing high-capacity, reliable battery systems that meet evolving safety standards in the EV sector.
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