Marposs, a measurement, inspection and test technology company, has announced a new patent-pending machine for leak-testing batteries that can detect solvents used in the production of lithium-ion cells, including DMC, DEC, EMC and PP.
In contrast to leak-testing systems that use helium as a tracer gas and don’t test the final seal, the Marposs machine relies on electrolyte tracing to perform the leak test after sealing. The machine is available in versions designed for cylindrical, button, prismatic and pouch cells. The pouch cell version needs tooling to prevent swelling when the vacuum is performed.
The new machine features automatic contamination detection and cleaning cycles, safety verification to prevent cross-contamination, a system for sorting the good batteries from leaking batteries, and a one-second-per-cell cycle time for button cell batteries.