Protecting EV Battery Systems with Adhesive Bonded Composite Panels

Posted on 9/21/2021 12:24:13 PM By ASC

The adhesive & sealant industry is meeting the needs of electric vehicle applications, including those related to safety, vehicle weight, range between charging and protecting EV battery systems. Allowing for venting and, where necessary, cooling, without compromising lightweighting goals and vehicle performance. 

Lightweight composite panels can protect EV batteries from impact with great structural resistance, energy absorption, excellent durability, and a very flat surface with tight tolerances. These panels are constructed out of an aluminium honeycomb core sandwiched between two alloy skins. The layers are bonded together using a strong engineering adhesive and pressed together until curing is completed.

To counteract the risk of batteries overheating in high-performance electric vehicles which can lead to thermal runaway and, in turn, release organic carbonates that mixed with air, can cause explosions or fires, liquid cooling is an effective solution.

For cooling batteries, companies can again make use of aluminum, which has a high thermal conductivity, to transfer the heat from the battery. To allow a coolant to flow through the base plate to cool the batteries, channels can be machined into thin aluminium plates before bonding aluminium skins over them.