Thermal adhesives are used to both join battery components and conduct heat away from heat-generating components. They are part of a battery's thermal management solution to control the battery's temperature and, as a result, improve its range, performance, longevity, and safety.
Why are thermally conductive adhesives important for EV battery packs?
Thermally conductive adhesives play a crucial role in electric vehicle (EV) battery packs by addressing the critical need for efficient heat management. EV battery packs generate significant heat during operation, which can negatively impact their performance, lifespan, and safety.
What is a battery adhesive?
Courtesy of Dupont. Some adhesives for battery assembly serve a multifunctional role, providing structural joining, thermal management, and support for dielectric isolation. Adhesives in this class offer thermal management and medium strength that supports the stiffness and mechanical performance of the battery pack.
Dupont's BETAMATE (5) and BETAFORCE (7) are part of a broad portfolio of adhesives for numerous EV applications. The next generation of EV batteries is witnessing the emergence of cell-to-pack designs. These designs integrate battery cells into the pack using thermal structural adhesives.
For this reason, thermal adhesives are used at several locations in battery modules, such as between individual cells, or between cells and cooling plates. Structural adhesives are used in EV battery packs to create bonds that can withstand various environmental conditions and mechanical loads.
Structural adhesives are used in EV battery packs to create bonds that can withstand various environmental conditions and mechanical loads. These adhesives provide shear and tensile strength to increase protection against external forces such as impacts, vibrations, and loads. With structural adhesives, battery components are stronger together.
Thermally conductive adhesives help mitigate these issues by providing a reliable bond between battery cells and heat dissipation components, such as heat sinks or other thermal interface materials. These adhesives facilitate the transfer of heat away from the cells, allowing for effective dissipation and maintaining optimal operating temperatures.