Dusseldorf, Germany – Henkel has introduced a new adhesive for electric vehicle battery systems. The company said the adhesive, Loctite TLB 9300 APSi, provides both structural bonding and thermal conductivity in the battery system.
It claims the new two-component polyurethane adhesive is a first-of-a-kind injectable adhesive, with a high thermal conductivity of 3W/mK. It also has moderate viscosity and self-levelling properties. It gives high binding to a variety of substrates, and the solvent-free solution cures at room temperature.
Applications include bonding battery cells to modules, and binding cells directly to cooling systems.
“Thermal management in EV batteries is still one of the biggest challenges for electrified mobility,” said Stephan Hoefer, Henkel’s global market strategy head for e-mobility. “New designs targeting higher energy densities in battery packs bring along the requirement for multifunctional thermally conductive adhesives instead of classical thermal gap fillers.”
The product is already being used by one of the world’s largest manufacturers of EV batteries. “Its immediate adoption by a major battery manufacturer demonstrates our close partnership with key players in the e-mobility industry to help advance change,” said Holger Schuh, the company’s global senior manager for thermal technologies.
