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Achieving Flawless Potting: How Low Viscosity Eliminates Micro-Bubbles in High-Density Cells

2026-06-01

Achieving Flawless Potting: How Low Viscosity Eliminates Micro-Bubbles in High-Density Cells

When potting high-density battery modules where cells are separated by only a few millimeters, air bubbles are a major quality issue. A micro-bubble trapped inside the cured compound acts as a localized heat insulator, creating a hot spot on the cell surface. Additionally, under high-voltage conditions, these internal voids can host partial electrical discharges, slowly degrading the insulation material over time.

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Optimized Fluid Dynamics:
Hanast addresses this challenge by engineering our potting compounds with advanced self-leveling fluid dynamics. Our formulations feature a low initial viscosity (down to
), giving the liquid excellent pouring characteristics. As the compound fills the module housing from the bottom up, it naturally displaces air pockets and allows micro-bubbles to rise and escape freely before gelling begins. This ensures a uniform, solid matrix without requiring protracted vacuum degassing steps.

Target Keywords for SEO: Khử bọt khí trong keo (Eliminating glue bubbles), Keo đổ mạch độ nhớt thấp (Low viscosity potting compound), Đổ keo module pin độ bám dính cao (High-adhesion battery module potting).

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