WEVO-CHEMIE GmbH and its silicone-based thermal management solutions for automotive power electronics, particularly on-board chargers (OBCs) and DC/DC converters.

Introduction

As electric vehicle (EV) technology advances, efficient thermal management has become a critical factor in ensuring the reliability and performance of on-board chargers (OBCs), DC/DC converters, and other power electronics. WEVO-CHEMIE GmbH, a leader in high-performance encapsulation materials, has introduced WEVOSIL—a range of third-generation silicone-based potting compounds, gap fillers, and gels—to enhance heat dissipation and mechanical stability in automotive power electronics.

Thermal Management for High-Performance Charging

With the increasing adoption of fast charging and bidirectional charging, power electronics in EVs must operate at higher temperatures while maintaining long-term durability. WEVO’s thermally conductive silicone solutions mitigate heat buildup, ensuring components perform efficiently over their entire lifespan.

WEVO’s silicones offer wide-ranging thermal conductivity options:

• 1 W/m·K for potting compounds (e.g., WEVOSIL 22102 FL)
• 4 W/m·K for highly thermally conductive gap fillers (e.g., WEVOSIL 26040 FL)

Additionally, the pronounced tackiness of Wevo silicone gels ensures strong adhesion to housings and components, even at extreme temperatures.

Optimized for Serial Production and Customization

To support mass production, WEVOSIL materials feature fast cycle times, making them ideal for efficient serial production. These two-component silicones can be customized in terms of:

• Flow behavior – for filling small gaps effectively.
• Pot life – to match processing requirements.
• Hardness and adhesion – ensuring durability and flexibility.

This versatility allows manufacturers to tailor materials to specific component needs while maintaining high reliability in production.

Silicones for DC/DC Converters and EV Powertrain Components

DC/DC converters play a vital role in managing power distribution in electric vehicles. As these components become integrated into larger drive train units (such as HV batteries, inverters, and OBCs), the need for high-performance thermal management solutions increases.

WEVO’s WEVOSIL products ensure efficient heat dissipation, reducing the risk of overheating and component failure. The company’s portfolio also includes polyurethanes and epoxy resins, which can be customized for power electronics applications in EVs, industrial systems, and beyond.

Conclusion

As EV technology continues to evolve, WEVO’s thermally conductive silicones provide an innovative solution for efficient heat management and durability in power electronics. Their customizability, high adhesion, and thermal conductivity make them an essential material for next-generation automotive applications.