Drilling EV Battery Cooling Plates: What I've Learned

Battery cooling plates are one of the newer applications I have been seeing in deep hole drilling. They are basically aluminum plates with a network of drilled channels that coolant flows through to keep EV battery cells at the right temperature. I have also written about EV motor shafts and hot runner manifolds — all part of the same EV trend, but each with different challenges. The concept is similar to a hot runner manifold — a pattern of intersecting holes in a plate — but the scale and the material make it different. ...

June 11, 2026 · Engineer at the Deep Hole

Deep Hole Drilling for EV Battery Cooling Plates: Challenges and Solutions

Deep Hole Drilling for EV Battery Cooling Plates: Challenges and Solutions Over the last few years, I have seen battery cooling plates become one of the fastest-growing applications in our deep hole drilling shop. Every major EV platform now uses liquid-cooled battery packs, and the cooling plate — typically a sandwiched aluminum assembly with internal coolant channels — is at the heart of the thermal management system. As demand has ramped up, so have the calls from manufacturers asking how to adapt deep hole drilling processes to these parts. The short answer is that it works very well, but you have to rethink almost every assumption you carry over from traditional deep hole drilling work. ...

Engineer at the Deep Hole