EV Battery Mastic Applications

Sealant Applications in EV Batteries As automotive manufacturers worldwide renew their technologies and production lines toward electric vehicles, EV (Electric Vehicle) battery production has emerged as the most critical element. In parallel, production facilities for electric vehicle (EV) battery manufacturing operated by automotive manufacturers, battery producers, and their joint ventures are coming online globally. Looking at the production technologies in these facilities, chemical usage for different purposes has become one of the fundamental building blocks in battery production. The applications of these chemicals with different properties are highly important due to both high safety standards and difficult to execute due to their two-component structures with precise mixture ratios and structures containing high filler ratios of abrasive materials such as TIM (Thermal Interface Material). To ensure optimal performance and maximum safety of EV batteries, the sealant (sealing) applications used in production stages can be grouped into four main categories, depending on the manufacturers' unique designs. 1-Structural Bonding Achieving high production efficiency, providing a strong bond between cell and carrier while meeting expectations for speed, precision and repeatability requires adhesion from cell to carrier. The selection of adhesive and equipment plays an important role in meeting these application expectations. 2-Vibration Damping During normal operation of an electric vehicle, the battery module is exposed to harsh road and environmental conditions such as external shocks and vibrations. These impacts and vibrations cause mechanical stress that increases the likelihood of battery components deforming or sustaining damage. Ultimately, unmitigated mechanical shock and vibrations negatively impact the module's reliability, longevity and safety. 3-Sealing Achieving quality sealing is critical for the performance and lifespan of EV cells and for protecting integrated components from water ingress and other harsh environmental conditions. 4-Thermal Management To improve battery performance and reduce weight, battery cells have higher energy density, which results in more heat being generated in a smaller area. Therefore, each battery must be designed with a thermal management system that protects the battery from overheating and safely dissipates heat away from critical components. During battery pack assembly, Thermal Interface Materials (TIMs), also known as gap fillers, are distributed in large volumes between the cooling circuit and battery modules/cells. TIMs contain highly abrasive filler materials with thermally conductive properties that allow heat to disperse from battery cells/modules toward the cooling circuit. Graco is able to respond to all chemical applications in battery production stages with the advantage provided by having one and two component equipment that can work with a wide variety of materials and has long service life and precise working tolerances. Haldun Bakkal Sales Director Paints and Coatings, Sealant Application and Fluid Transfer Equipment Genmar