Nick Flaherty assesses the various materials and processes used to seal and protect a battery pack. Sealing a battery pack safely is a key requirement for e-mobility systems.
Why do batteries need to be sealed?
The sealing components used also have to be chemically stable toward organic electrolytes. In addition, during the battery's entire service life, the sealing material must not leach out contaminating substances into the battery electrolyte as this could have a long-term negative influence on the cells' electrochemistry.
What is a battery pack seal?
While thermal and electrically conductive materials often get the limelight, battery pack seals do the heavy work of protecting the battery components from intrusion by moisture, dust, and other debris.
Does Henkel seal a battery?
Battery sealing and battery safety go hand in hand. Henkel's high-performance sealers guard the battery pack interior by working in conjunction with – or in place of – conventional fasteners to create a continuous, robust barrier against contamination.
What is battery pack perimeter sealing?
Battery pack perimeter sealing applications are just one element in a wider group of advanced materials, such as adhesives, thermal interface materials, and battery safety materials that work in concert to shield and protect the entire symphony of vital EV components.
What are cell sealing components?
The following pages will discuss the main sealing components for cells and the entire battery system. Cell sealing components must electrically isolate the two pole connectors from each other. The sealing components used also have to be chemically stable toward organic electrolytes.
Do EV batteries need to be sealed?
Without adequate sealing, EV batteries are prone to premature failure, short circuiting, and even thermal runaway, all of which introduce safety concerns for customers and manufacturers alike. Battery sealing and battery safety go hand in hand.