Insulating Boron Nitride Thermal Conductive Material Significantly Enhances Safety and Performance of EV Batteries and Power Modules

June 28, 2026

Tech Briefs USA

Overview

Insulating Boron Nitride (BN) thermal conductive material is reported as crucial for significantly improving the safety and performance of EV batteries and power modules. The high thermal conductivity of BN fillers minimizes hotspots and uniformly disperses heat in EV batteries. Its excellent dielectric strength blocks stray currents, preventing short circuits while maintaining efficient heat dissipation. The inertness and stability of hexagonal BN provide resistance to oxidation and high-temperature degradation, ensuring long-term reliability.

In Depth

Insulating Boron Nitride Thermal Conductive Material Dramatically Enhances Safety and Performance of EV Batteries and Power Modules

In the realm of electric vehicle (EV) batteries and power modules, insulating Boron Nitride (BN) thermal conductive material has been reported to play an extremely critical role in significantly improving device safety and performance. Due to its unique properties, BN offers an ideal solution for thermal management challenges in these high-power, high-thermal-density applications.

Thermal Conductivity and Electrical Properties of BN Fillers

BN fillers, with their high thermal conductivity, are capable of minimizing hotspots that occur within EV batteries and power modules, and uniformly dispersing heat throughout the system. This reduces the risk of performance degradation and damage due to localized overheating, thereby extending device lifespan and enhancing reliability. Furthermore, BN possesses excellent dielectric strength (electrical insulation), which effectively blocks the occurrence of stray currents in high-voltage environments, preventing electrical short circuits while maintaining efficient heat dissipation. This property is particularly vital in EV applications where safety is paramount.

Stability and Long-Term Reliability of Hexagonal BN

Hexagonal Boron Nitride (h-BN), in particular, provides long-term reliability under harsh operating conditions due to its chemical inertness and thermal stability. h-BN exhibits high resistance to oxidation and chemical degradation at high temperatures, and when incorporated as a compounding material in adhesives and compounds, it maintains its performance over extended periods. This ensures stable thermal management performance throughout the entire service life of EV batteries and power modules. This advanced material technology directly contributes to extending EV range, improving fast-charging capabilities, and above all, ensuring occupant safety, serving as a critical foundation for the realization of next-generation e-mobility.

Source: https://www.sheenthermal.com/insulating-boron-nitride-thermal-conductive-material.html

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