Leak Testing for Battery Cells, Battery Modules and Battery Packs

A battery system, consists of many individual components and assemblies that have to be checked for leaks. This includes battery modules, the cooling system, high-voltage connectors, pressure compensation elements (DAE), and enclosure components such as the battery tray, the battery cover, and other attachments. We also offer the appropriate leak testing solutions using air and tracer gases for these components.

Mounted battery packs must meet the highest requirements for leakage. The end-of-line test ensures that no leaks remain undetected before the pack is installed in a vehicle. Depending on the size of the component, the required cycle time, and the leak rate, different testing methods are used, such as the mass flow method, as well as accumulation or sniffing tests with helium. With the sniffing test, leaks can be pinpointed precisely using a manually or robotically guided probe.

Are you working on a battery project? We are more than happy to support you with our holistic approach, from component design and specification analysis to feasibility assessments and consultation on the ideal test method and setup for the job. Our experts are here to help you through each step of the process, from the prototype phase to mass production!