WEVO-CHEMIE Develops High-Insulation, Thermally Conductive Polyurethane Potting System for EV Battery BMS

September 6, 2026

WEVO-CHEMIE GmbH Germany

Overview

WEVO-CHEMIE GmbH has developed WEVOPUR 60210 FL T, a polyurethane potting system for multilayer PCBs in EV battery management systems (BMS), offering 0.8 W/m·K thermal conductivity and dielectric strength exceeding 20 kV/mm. This material provides robust protection against mechanical stress, temperature changes, and moisture, while also featuring UL 94 V-0 flame retardancy. Its optimized rheology supports automated ‘dam-and-fill’ selective potting processes, significantly enhancing EV battery reliability and safety.

In Depth

Key Findings

WEVO-CHEMIE GmbH has developed WEVOPUR 60210 FL T, a polyurethane potting system for multilayer PCBs in Electric Vehicle (EV) Battery Management Systems (BMS), featuring a thermal conductivity of 0.8 W/m·K and a dielectric strength greater than 20 kV/mm. This innovative material is designed to provide comprehensive protection against mechanical stress, temperature fluctuations, and moisture, thereby substantially improving the reliability and safety of EV batteries.

Technical Details

WEVOPUR 60210 FL T offers a range of critical properties:

High Electrical Insulation: With a dielectric strength exceeding 20 kV/mm, it reliably protects PCBs from electrical failures, which is paramount in high-voltage EV battery systems.
Effective Thermal Conductivity: A thermal conductivity of 0.8 W/m·K efficiently dissipates heat generated within the BMS, preventing component overheating. This contributes to stable system operation and an extended lifespan.
Tailored Mechanical Properties: The material possesses optimized mechanical properties to shield electronic components from mechanical stress, temperature changes, and moisture, enhancing protection against shock and vibration.
Flame Retardancy: It meets the UL 94 V-0 flammability rating, significantly improving safety in the event of a fire.
Excellent Processability: Its rheological properties are optimized for automated ‘dam-and-fill’ selective potting processes, boosting manufacturing efficiency and ensuring consistent, high-quality encapsulation.

This material serves as an indispensable solution for guaranteeing the long-term stability and performance of BMS circuits within EV battery modules and packs.

Background & Context

With the rapid expansion of the electric vehicle market, battery safety and reliability have become top priorities for both consumers and regulatory bodies. The Battery Management System (BMS), which centrally monitors and controls battery cell health, demands high durability under harsh operating conditions. Factors such as temperature variations, moisture ingress, mechanical vibrations, and potential electrical stresses all elevate the risk of BMS failure. WEVO-CHEMIE GmbH’s new potting system addresses these critical challenges, representing a significant technological contribution to accelerating EV adoption.

Strategic Significance & Outlook

The introduction of WEVOPUR 60210 FL T is poised to set a new benchmark for safety and reliability in EV batteries. Its combination of high performance and excellent processability makes it an attractive choice for EV manufacturers. Beyond electric vehicles, this material is expected to find applications in other high-voltage and high-heat-generating systems, such as industrial power supplies and renewable energy conversion devices. This material will play a vital role in further driving technological innovation towards a sustainable mobility society.

Source: https://www.indianchemicalnews.com/electric-vehicles/polyurethane-potting-helps-protect-ev-battery-management-electronics-from-failure-31665

Get our weekly technology intelligence — free

Receive an infographic that lets you judge at a glance whether each field’s analysis report is worth reading.

Subscribe Free — Weekly Tech Intelligence

By subscribing, you’ll receive Troy-Technical’s weekly technology intelligence newsletter.