Avery Dennison Performance Tapes has introduced a new EV Battery Venting Materials Portfolio to help counter the risk of thermal runaway and increase safety in EV batteries. These venting solutions include single- and double-coated anisotropic filmic tapes with proprietary fire-barrier coatings and pressure-sensitive adhesives (PSA) for bonding.

EV battery manufacturers implement venting strategies at the cell, module and pack levels. The Avery Dennison battery venting tape solutions, when applied to module- or pack-level venting holes, provide quick burn-through to facilitate venting via a channel. The opposite side provides extended flame resistance to prevent the migration of flames and hot gases into adjacent cells. The outer side of the film will last less than 4 seconds under flame. The adhesive side will last longer than 15 seconds. The combined flame retardancy is designed to counter the risk of thermal runaway.

“Our new venting solutions are engineered to provide differential performance to flame exposure, which can lead to very elegant emergency venting strategies,” said Max Van Raaphorst, Business Development Manager, eMobility, Automotive & Energy Storage, Avery Dennison Performance Tapes North America. “These unique tapes can be combined with a wide range of other thermal runaway mitigation materials to lead to efficient, space saving designs. As always, our goal is to help make EV battery packs more safe, efficient and easier to assemble.”

Source: Avery Dennison