Sealing Battery Pack between Upper Case and Lower Case

Why Battery Pack Sealing?

Achieving a quality seal is critical for the performance and longevity of EV batteries and for protecting integral components from water intrusion and other harsh environmental conditions.

For better performance, safety, and longevity of the pack:

EV batteries are subject to increasingly stringent performance and safety standards. Increasing the significance of a reliable and repeatable pack seal is critical to the performance, safety, and longevity of the pack. The seal must meet design and regulatory compliance for enclosure standards, such as IP68, which means that the seal will protect against water intrusion, corrosion, and outside contaminants. The pack must also meet design and regulatory safety standards to enhance vehicle safety and mitigate the risk of thermal propagation/runaway. 

Challenges Sealants play a crucial role in battery pack enclosures to protect the battery from exposure to elements that might affect its performance. What requirements an ideal sealant should meet? Extreme flexibility Excellent durability Excellent sealing performance and airtightness Serviceability or removability for post-repair Excellent adhesion with limited surface treatment Rapid and precise application enabling high speed automated manufacturing

Comparing Adhesive Sealants, Cured-in-place Gasket and Gasket Pad

Custom Dispensing System

The dispensing system will be different according to the production, the below are two equipment: pressure pump and desktop dispensing robot – which are popular in the system for battery pack sealing application.

Which sealant is the best choice?

Each application and production will be suitable with a different type of sealing materials. To receive further consultant, please contact our expert: