Baysafe® BEF: Foaming and encapsulating battery cells in electric vehicles
Due to its barrier effect, our custom-tailored PU foam can be used by OEMs and battery manufacturers for the thermal, electrical, and mechanical protection of battery cells against malfunctions. This PU foam significantly contributes to enhancing the safety and reliability of battery systems. Furthermore, Baysafe® BEF, with its excellent adhesion properties, increases the torsional stiffness of the entire battery pack, making it a key component in efficient cell-to-pack designs.
Baysafe® BEF encases the battery cells and enables OEMs and battery manufacturer to protect the cells from mechanical, electrical, and thermal risks. This makes our high-quality PU foam an essential component for increased safety and reliability of battery systems in electric vehicles. Its thermal and electrical barrier properties are crucial for preventing thermal runaway of the battery cells and provide additional protection for high-voltage components.
Baysafe® BEF has been specifically developed for a battery architecture with cylindrical cells. Thanks to chemical improvements, the foam exhibits excellent adhesion to the battery components, enabling a high torsional stiffness and improved force transmission. These factors are key to the structural integrity of the entire battery pack and a modern Cell-to-Pack architecture.
Innovative Foam Solutions from Baysafe® BEF
The advanced foam technology of Baysafe® BEF not only enables OEMs and battery manufacturer reliable processing in battery packs but also promotes higher cell packing density, contributing to increased range for electric vehicles. The low viscosity and tailored kinetics enable the filling of cell gaps without air inclusions and foam processing adjusted to cycle time during production.
With our experience in battery technologies, Covestro is able to provide complete solutions precisely tailored to each customer’s requirements.
Discover polyurethane foam systems from Covestro and join us in shaping the future of electromobility.
Key benefits
- Increased safety for batteries: Baysafe® BEF protects the cells from mechanical, thermal, and electrical stresses.
- More reliable batteries: Baysafe® BEF reduces the risk of malfunctions and thermal runaway of the cells
- Mechanical integrity of the battery pack: The excellent adhesion of Baysafe® BEF to the battery components improves force transmission and torsional stiffness.
- Cell-to-Pack: The structural integrity of the battery pack is key to modern cell-to-pack designs.
- Cost-effective production: This is achieved through a high degree of automation in polyurethane processing and the tailored reaction kinetics of Baysafe® BEF.
- Reliable processing in batteries: The low viscosity of Baysafe® BEF during processing is designed to fill even the tight spaces between cells.
