Innovation: Advanced Composites Battery Cover for Next Generation Electric Vehicles (EVs)
Award Category: Design: Most Creative Application Award, 2025 CAMX ACE finalist
Company: University of Tennessee, Knoxville
Objective: The advanced battery cover is developed for electric vehicles (EVs) as a lightweight, corrosion-resistant replacement for traditional steel and aluminum enclosures. It is manufactured using recyclable Elium® thermoplastic resin reinforced with glass fiber and non-halogenated fire retardants.
The goal of this project is to develop a lightweight, corrosion-resistant, and fully recyclable advanced composite battery cover for next-generation electric vehicles. Built using Elium® thermoplastic resin, glass-fiber reinforcement, and non-halogenated fire retardants, the enclosure is designed to replace heavy metal housings while improving safety and sustainability. The system also integrates embedded thermocouples/temperature sensors to enable real-time thermal monitoring of the battery pack, supporting more precise thermal management and early detection of thermal events.
Results: The lightweight design improves energy efficiency and extends vehicle range, while the material provides enhanced protection for battery cells against extreme temperature changes and environmental conditions.
The composite battery cover delivers significant weight reduction, improving EV energy efficiency and extending driving range. The thermoplastic composite architecture provides excellent thermal stability, weather resistance, and fire-retardant performance. With integrated temperature sensors, the enclosure actively monitors internal conditions and supports predictive battery-health management. Its robust structure improves protection against temperature fluctuations, moisture, corrosion, and mechanical loads.
Impact: It also offers superior impact resistance, making it highly effective during collisions. This innovation offers superior impact resistance compared to traditional metal housings, enhancing safety during collisions or road-impact events. The integrated sensing network transforms the cover into a smart structural component, providing continuous insight into battery temperature behavior and reducing the risk of thermal runaway. The fully recyclable Elium® resin system supports circular manufacturing, making the solution both high-performance and environmentally responsible.
From the Expert: “By integrating a recyclable thermoplastic composite with embedded temperature-sensing technology, we’ve created a battery cover that is not only lighter and tougher, but also smarter. This design enhances safety by monitoring thermal behavior in real time, while supporting sustainability goals through a fully recyclable materials system.” ~UT-FCMF (Fiber and Composite Manufacturing Facility) Team.