Virtual Battery Show & Tech Days 2020

Thermal Control

Thermal management is fundamental to safe, efficient EV battery function and long operating life. While the primary role of thermal interface materials (TIMs) is heat dissipation to optimize operation and avoid ‘thermal runaway’, additional features such as fast flow rates and lightweighting enable high-throughput production and extended driving range respectively. Henkel will feature two of its latest liquid TIM innovations, specifically silicone-based BERGQUIST® Gap Filler TGF 2200 APS and silicone-free BERGQUIST® Gap Filler TGF 3010 APS, which address multiple goals: dispensing speeds of up to 80 cc/second and robust thermal conductivity of up to 3 W/mK to tackle safety and functional reliability requirements      

With many factors to consider, most importantly passenger safety, close consultation with a trusted, multi-solution partner will ensure all thermal management and material compatibility objectives are met.

Durable Adhesives

In addition to robust thermal management, battery pack integrity is reliant on adhesive material strength.  The ability to withstand the stress of harsh environmental and operational conditions, as well as provide cost-down benefits through high-speed application and fast curing capabilities, are key considerations for adhesive selection.  Fast assembly of all elements of the EV battery pack is vital to addressing steadily declining battery costs, which have dropped nearly tenfold over the last decade.  Along with other power storage portfolio products, Henkel EV assembly adhesives are supporting customers’ cost efficiency requirements.  The company will feature a recent success with battery cell carrier manufacturer Covestro, where Henkel’s LOCTITE® AA 3963 cure-on-demand adhesive is enabling five-second cell fixturing for mass production economies of scale.    

Battery Show attendees will see how adhesives that perform multiple functions, such as bonding and heat dissipation, can also aid in reducing overall costs.  LOCTITE® and BERGQUIST® thermally conductive adhesives, designed for the assembly of cylindrical and pouch cells, deliver this dual-functionality in carefully-balanced formulations that combine effective thermal conductivity and high bonding strength. 

Serviceable Sealants 

As the battery system represents approximately 50% of the EV cost, shielding the battery pack from contaminants helps protect its value. The ability to easily service and repair a battery lowers the lifetime cost of the EV, as Henkel will demonstrate during the Battery Show.  Products like Henkel’s LOCTITE® ESB 5100, a unique safeguarding sealant innovation, offers unprecedented application flexibility. The gasketing material, for example, can secure the battery pack lid to the housing, while it can also be quickly removed and re-applied for battery repair access.