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.
Therefore, Henkel has extended its broad portfolio of solutions for EV battery systems with a first-of-its-kind injectable thermally conductive adhesive. The new adhesive – Loctite TLB 9300 APSi – provides both structural bonding, as well as thermal conductivity in the battery system.
Thermally Conductive Adhesives (TCAs) are key Thermal Interface Material (TIMs) used in Cell-to-Pack configurations, providing structural bonding and thermal conductivity. In this configuration TCAs are dispensed on the inside of the battery case and cells are then stacked in the case to create the battery pack structure.
Structural Adhesives used in EV batteries must withstand high mechanical loads, as well as exposure to temperature extremes, humidity, and other harsh environmental conditions. The following methodologies are used to test the performance: the weight of the battery or vehicle, or internal stresses generated by thermal expansion or contraction.
“Thermal management in EV batteries is still one of the biggest challenges for electrified 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.
Functional materials such as debondable structural adhesives and debondable thermally conductive adhesives will enable OEMs and battery manufacturers to include debond-on-demand solutions into EV batteries, thereby extending the maximum lifetime of batteries and easing the dismantling process for EOL applications.
Henkel''s new injectable adhesive for EV battery systems
Henkel Adhesive Technologies has unveiled its latest innovation in thermal management solutions for electric vehicle (EV) battery systems with the introduction of the Loctite TLB 9300 APSi. This new injectable thermally conductive adhesive provides both structural bonding and thermal conductivity, addressing critical needs in the manufacturing ...
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Electrolyte salts . Electrolytes ensure the flow of lithium ions within the battery, which is directly linked to battery lifecycle. To guarantee long-term performance, electrolytes can be improved using Foranext ® electrolyte salts.. LiFSI has the highest ionic conductivity among all lithium salts. Its remarkable electrochemical (>5V) and thermal stability make it an ideal choice to be used ...
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The battery system''s thermal management here strongly depends on an efficient and reliable heat transfer towards cooling plates. SEKISUI''s CGW® TCAs, the advanced thermally conductive adhesives provide both a reliable structural …
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Henkel launches a new injectable thermally conductive adhesive …
Designed for applications such as bonding battery cells to modules, or bonding cells directly to cooling systems, Loctite TLB 9300 APSi is a two-component polyurethane thermally conductive adhesive with a high thermal conductivity of 3 W/mK, moderate viscosity, and self-levelling characteristics.
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