Today, various methods are used to seal battery cases and covers, including polyurethane foam-in-place gasketing, tall urethane beads and self-expanding foam.
The unpressed foam seal before closing the housing. When the battery housing cover is screwed on, the elastic cell structure of the foam seal is compressed. This provides the sealing function of the housing seal - the battery housing is tight.
This requires a perfect seal of the battery case and electrical insulation for the optimal performance of these components. The polyurethane sealing foams from the FERMAPOR K31 product family, which are used to seal the battery housings, protect the EV batteries from vibrations, thermal shock, moisture, dust and corrosion.
With its Sonderhoff brand, Henkel has many years of experience in sealing battery housings. As a manufacturer of sealing systems, mixing and dosing machines, and as a process expert for material application with FIPFG technology, we combine materials and engineering expertise.
The video shows the polyurethane foam seal FERMAPOR K31 in cross section - first in the uncompressed state, then 50 % compressed, so that the sealing function of the seal is given. The unpressed foam seal before closing the housing. When the battery housing cover is screwed on, the elastic cell structure of the foam seal is compressed.
EV (Electrical Vehicle) batteries for electrically powered vehicles are often exposed to extreme environmental conditions and the harshest vibrations. This requires a perfect seal of the battery case and electrical insulation for the optimal performance of these components.
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